#include "import.h"
#include "statements.h"
#include "lex.h"
+#include "runtime.h"
+#include "backend.h"
#include "expressions.h"
+#include "ast-dump.h"
// Class Expression.
Expression::Expression(Expression_classification classification,
- source_location location)
+ Location location)
: classification_(classification), location_(location)
{
}
{
}
-// If this expression has a constant integer value, return it.
-
-bool
-Expression::integer_constant_value(bool iota_is_constant, mpz_t val,
- Type** ptype) const
-{
- *ptype = NULL;
- return this->do_integer_constant_value(iota_is_constant, val, ptype);
-}
-
-// If this expression has a constant floating point value, return it.
-
-bool
-Expression::float_constant_value(mpfr_t val, Type** ptype) const
-{
- *ptype = NULL;
- if (this->do_float_constant_value(val, ptype))
- return true;
- mpz_t ival;
- mpz_init(ival);
- Type* t;
- bool ret;
- if (!this->do_integer_constant_value(false, ival, &t))
- ret = false;
- else
- {
- mpfr_set_z(val, ival, GMP_RNDN);
- ret = true;
- }
- mpz_clear(ival);
- return ret;
-}
-
-// If this expression has a constant complex value, return it.
-
-bool
-Expression::complex_constant_value(mpfr_t real, mpfr_t imag,
- Type** ptype) const
-{
- *ptype = NULL;
- if (this->do_complex_constant_value(real, imag, ptype))
- return true;
- Type *t;
- if (this->float_constant_value(real, &t))
- {
- mpfr_set_ui(imag, 0, GMP_RNDN);
- return true;
- }
- return false;
-}
-
// Traverse the expressions.
int
}
// This virtual function is called by the parser if the value of this
-// expression is being discarded. By default, we warn. Expressions
-// with side effects override.
+// expression is being discarded. By default, we give an error.
+// Expressions with side effects override.
void
Expression::do_discarding_value()
{
- this->warn_about_unused_value();
+ this->unused_value_error();
}
// This virtual function is called to export expressions. This will
void
Expression::do_export(Export*) const
{
- gcc_unreachable();
+ go_unreachable();
}
-// Warn that the value of the expression is not used.
+// Give an error saying that the value of the expression is not used.
void
-Expression::warn_about_unused_value()
+Expression::unused_value_error()
{
- warning_at(this->location(), OPT_Wunused_value, "value computed is not used");
+ error_at(this->location(), "value computed is not used");
}
// Note that this expression is an error. This is called by children
tree
Expression::convert_for_assignment(Translate_context* context, Type* lhs_type,
Type* rhs_type, tree rhs_tree,
- source_location location)
+ Location location)
{
- if (lhs_type == rhs_type)
- return rhs_tree;
-
if (lhs_type->is_error() || rhs_type->is_error())
return error_mark_node;
Gogo* gogo = context->gogo();
- tree lhs_type_tree = lhs_type->get_tree(gogo);
+ tree lhs_type_tree = type_to_tree(lhs_type->get_backend(gogo));
if (lhs_type_tree == error_mark_node)
return error_mark_node;
- if (lhs_type->interface_type() != NULL)
+ if (lhs_type != rhs_type && lhs_type->interface_type() != NULL)
{
if (rhs_type->interface_type() == NULL)
return Expression::convert_type_to_interface(context, lhs_type,
rhs_type, rhs_tree,
false, location);
}
- else if (rhs_type->interface_type() != NULL)
+ else if (lhs_type != rhs_type && rhs_type->interface_type() != NULL)
return Expression::convert_interface_to_type(context, lhs_type, rhs_type,
rhs_tree, location);
- else if (lhs_type->is_open_array_type()
- && rhs_type->is_nil_type())
+ else if (lhs_type->is_slice_type() && rhs_type->is_nil_type())
{
// Assigning nil to an open array.
- gcc_assert(TREE_CODE(lhs_type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(lhs_type_tree) == RECORD_TYPE);
VEC(constructor_elt,gc)* init = VEC_alloc(constructor_elt, gc, 3);
constructor_elt* elt = VEC_quick_push(constructor_elt, init, NULL);
tree field = TYPE_FIELDS(lhs_type_tree);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
"__values") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), null_pointer_node);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
"__count") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), integer_zero_node);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
"__capacity") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), integer_zero_node);
{
// The left hand side should be a pointer type at the tree
// level.
- gcc_assert(POINTER_TYPE_P(lhs_type_tree));
+ go_assert(POINTER_TYPE_P(lhs_type_tree));
return fold_convert(lhs_type_tree, null_pointer_node);
}
else if (lhs_type_tree == TREE_TYPE(rhs_tree))
|| INTEGRAL_TYPE_P(lhs_type_tree)
|| SCALAR_FLOAT_TYPE_P(lhs_type_tree)
|| COMPLEX_FLOAT_TYPE_P(lhs_type_tree))
- return fold_convert_loc(location, lhs_type_tree, rhs_tree);
- else if (TREE_CODE(lhs_type_tree) == RECORD_TYPE
- && TREE_CODE(TREE_TYPE(rhs_tree)) == RECORD_TYPE)
- {
+ return fold_convert_loc(location.gcc_location(), lhs_type_tree, rhs_tree);
+ else if ((TREE_CODE(lhs_type_tree) == RECORD_TYPE
+ && TREE_CODE(TREE_TYPE(rhs_tree)) == RECORD_TYPE)
+ || (TREE_CODE(lhs_type_tree) == ARRAY_TYPE
+ && TREE_CODE(TREE_TYPE(rhs_tree)) == ARRAY_TYPE))
+ {
+ // Avoid confusion from zero sized variables which may be
+ // represented as non-zero-sized.
+ if (int_size_in_bytes(lhs_type_tree) == 0
+ || int_size_in_bytes(TREE_TYPE(rhs_tree)) == 0)
+ return rhs_tree;
+
// This conversion must be permitted by Go, or we wouldn't have
// gotten here.
- gcc_assert(int_size_in_bytes(lhs_type_tree)
- == int_size_in_bytes(TREE_TYPE(rhs_tree)));
- return fold_build1_loc(location, VIEW_CONVERT_EXPR, lhs_type_tree,
- rhs_tree);
+ go_assert(int_size_in_bytes(lhs_type_tree)
+ == int_size_in_bytes(TREE_TYPE(rhs_tree)));
+ return fold_build1_loc(location.gcc_location(), VIEW_CONVERT_EXPR,
+ lhs_type_tree, rhs_tree);
}
else
{
- gcc_assert(useless_type_conversion_p(lhs_type_tree, TREE_TYPE(rhs_tree)));
+ go_assert(useless_type_conversion_p(lhs_type_tree, TREE_TYPE(rhs_tree)));
return rhs_tree;
}
}
tree
Expression::convert_type_to_interface(Translate_context* context,
Type* lhs_type, Type* rhs_type,
- tree rhs_tree, source_location location)
+ tree rhs_tree, Location location)
{
Gogo* gogo = context->gogo();
Interface_type* lhs_interface_type = lhs_type->interface_type();
// When setting an interface to nil, we just set both fields to
// NULL.
if (rhs_type->is_nil_type())
- return lhs_type->get_init_tree(gogo, false);
+ {
+ Btype* lhs_btype = lhs_type->get_backend(gogo);
+ return expr_to_tree(gogo->backend()->zero_expression(lhs_btype));
+ }
// This should have been checked already.
- gcc_assert(lhs_interface_type->implements_interface(rhs_type, NULL));
+ go_assert(lhs_interface_type->implements_interface(rhs_type, NULL));
- tree lhs_type_tree = lhs_type->get_tree(gogo);
+ tree lhs_type_tree = type_to_tree(lhs_type->get_backend(gogo));
if (lhs_type_tree == error_mark_node)
return error_mark_node;
// Otherwise it is the interface method table for RHS_TYPE.
tree first_field_value;
if (lhs_is_empty)
- first_field_value = rhs_type->type_descriptor_pointer(gogo);
+ first_field_value = rhs_type->type_descriptor_pointer(gogo, location);
else
{
// Build the interface method table for this interface and this
method_table =
rhs_named_type->interface_method_table(gogo, lhs_interface_type,
is_pointer);
- first_field_value = fold_convert_loc(location, const_ptr_type_node,
- method_table);
+ first_field_value = fold_convert_loc(location.gcc_location(),
+ const_ptr_type_node, method_table);
}
if (first_field_value == error_mark_node)
return error_mark_node;
constructor_elt* elt = VEC_quick_push(constructor_elt, init, NULL);
tree field = TYPE_FIELDS(lhs_type_tree);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
(lhs_is_empty ? "__type_descriptor" : "__methods")) == 0);
elt->index = field;
- elt->value = fold_convert_loc(location, TREE_TYPE(field), first_field_value);
+ elt->value = fold_convert_loc(location.gcc_location(), TREE_TYPE(field),
+ first_field_value);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
elt->index = field;
if (rhs_type->points_to() != NULL)
tree object_size = TYPE_SIZE_UNIT(TREE_TYPE(rhs_tree));
tree space = gogo->allocate_memory(rhs_type, object_size, location);
- space = fold_convert_loc(location, build_pointer_type(TREE_TYPE(rhs_tree)),
- space);
+ space = fold_convert_loc(location.gcc_location(),
+ build_pointer_type(TREE_TYPE(rhs_tree)), space);
space = save_expr(space);
- tree ref = build_fold_indirect_ref_loc(location, space);
+ tree ref = build_fold_indirect_ref_loc(location.gcc_location(), space);
TREE_THIS_NOTRAP(ref) = 1;
- tree set = fold_build2_loc(location, MODIFY_EXPR, void_type_node,
- ref, rhs_tree);
+ tree set = fold_build2_loc(location.gcc_location(), MODIFY_EXPR,
+ void_type_node, ref, rhs_tree);
- elt->value = fold_convert_loc(location, TREE_TYPE(field), space);
+ elt->value = fold_convert_loc(location.gcc_location(), TREE_TYPE(field),
+ space);
return build2(COMPOUND_EXPR, lhs_type_tree, set,
build_constructor(lhs_type_tree, init));
tree
Expression::get_interface_type_descriptor(Translate_context*,
Type* rhs_type, tree rhs_tree,
- source_location location)
+ Location location)
{
tree rhs_type_tree = TREE_TYPE(rhs_tree);
- gcc_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
tree rhs_field = TYPE_FIELDS(rhs_type_tree);
tree v = build3(COMPONENT_REF, TREE_TYPE(rhs_field), rhs_tree, rhs_field,
NULL_TREE);
if (rhs_type->interface_type()->is_empty())
{
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)),
"__type_descriptor") == 0);
return v;
}
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__methods")
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__methods")
== 0);
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(v)));
+ go_assert(POINTER_TYPE_P(TREE_TYPE(v)));
v = save_expr(v);
- tree v1 = build_fold_indirect_ref_loc(location, v);
- gcc_assert(TREE_CODE(TREE_TYPE(v1)) == RECORD_TYPE);
+ tree v1 = build_fold_indirect_ref_loc(location.gcc_location(), v);
+ go_assert(TREE_CODE(TREE_TYPE(v1)) == RECORD_TYPE);
tree f = TYPE_FIELDS(TREE_TYPE(v1));
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(f)), "__type_descriptor")
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(f)), "__type_descriptor")
== 0);
v1 = build3(COMPONENT_REF, TREE_TYPE(f), v1, f, NULL_TREE);
- tree eq = fold_build2_loc(location, EQ_EXPR, boolean_type_node, v,
- fold_convert_loc(location, TREE_TYPE(v),
- null_pointer_node));
- tree n = fold_convert_loc(location, TREE_TYPE(v1), null_pointer_node);
- return fold_build3_loc(location, COND_EXPR, TREE_TYPE(v1),
+ tree eq = fold_build2_loc(location.gcc_location(), EQ_EXPR, boolean_type_node,
+ v, fold_convert_loc(location.gcc_location(),
+ TREE_TYPE(v),
+ null_pointer_node));
+ tree n = fold_convert_loc(location.gcc_location(), TREE_TYPE(v1),
+ null_pointer_node);
+ return fold_build3_loc(location.gcc_location(), COND_EXPR, TREE_TYPE(v1),
eq, n, v1);
}
Expression::convert_interface_to_interface(Translate_context* context,
Type *lhs_type, Type *rhs_type,
tree rhs_tree, bool for_type_guard,
- source_location location)
+ Location location)
{
Gogo* gogo = context->gogo();
Interface_type* lhs_interface_type = lhs_type->interface_type();
bool lhs_is_empty = lhs_interface_type->is_empty();
- tree lhs_type_tree = lhs_type->get_tree(gogo);
+ tree lhs_type_tree = type_to_tree(lhs_type->get_backend(gogo));
if (lhs_type_tree == error_mark_node)
return error_mark_node;
if (for_type_guard)
{
// A type assertion fails when converting a nil interface.
- tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo);
+ tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo,
+ location);
static tree assert_interface_decl;
tree call = Gogo::call_builtin(&assert_interface_decl,
location,
return error_mark_node;
// This will panic if the interface conversion fails.
TREE_NOTHROW(assert_interface_decl) = 0;
- elt->value = fold_convert_loc(location, TREE_TYPE(field), call);
+ elt->value = fold_convert_loc(location.gcc_location(), TREE_TYPE(field),
+ call);
}
else if (lhs_is_empty)
{
// A convertion to an empty interface always succeeds, and the
// first field is just the type descriptor of the object.
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),
"__type_descriptor") == 0);
- gcc_assert(TREE_TYPE(field) == TREE_TYPE(rhs_type_descriptor));
- elt->value = rhs_type_descriptor;
+ elt->value = fold_convert_loc(location.gcc_location(),
+ TREE_TYPE(field), rhs_type_descriptor);
}
else
{
// A conversion to a non-empty interface may fail, but unlike a
// type assertion converting nil will always succeed.
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__methods")
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__methods")
== 0);
- tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo);
+ tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo,
+ location);
static tree convert_interface_decl;
tree call = Gogo::call_builtin(&convert_interface_decl,
location,
return error_mark_node;
// This will panic if the interface conversion fails.
TREE_NOTHROW(convert_interface_decl) = 0;
- elt->value = fold_convert_loc(location, TREE_TYPE(field), call);
+ elt->value = fold_convert_loc(location.gcc_location(), TREE_TYPE(field),
+ call);
}
// The second field is simply the object pointer.
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
elt->index = field;
tree rhs_type_tree = TREE_TYPE(rhs_tree);
- gcc_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
tree rhs_field = DECL_CHAIN(TYPE_FIELDS(rhs_type_tree));
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__object") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__object") == 0);
elt->value = build3(COMPONENT_REF, TREE_TYPE(rhs_field), rhs_tree, rhs_field,
NULL_TREE);
tree
Expression::convert_interface_to_type(Translate_context* context,
Type *lhs_type, Type* rhs_type,
- tree rhs_tree, source_location location)
+ tree rhs_tree, Location location)
{
Gogo* gogo = context->gogo();
tree rhs_type_tree = TREE_TYPE(rhs_tree);
- tree lhs_type_tree = lhs_type->get_tree(gogo);
+ tree lhs_type_tree = type_to_tree(lhs_type->get_backend(gogo));
if (lhs_type_tree == error_mark_node)
return error_mark_node;
// will panic with an appropriate runtime type error if the type is
// not valid.
- tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo);
+ tree lhs_type_descriptor = lhs_type->type_descriptor_pointer(gogo, location);
if (!DECL_P(rhs_tree))
rhs_tree = save_expr(rhs_tree);
Expression::get_interface_type_descriptor(context, rhs_type, rhs_tree,
location);
- tree rhs_inter_descriptor = rhs_type->type_descriptor_pointer(gogo);
+ tree rhs_inter_descriptor = rhs_type->type_descriptor_pointer(gogo,
+ location);
static tree check_interface_type_decl;
tree call = Gogo::call_builtin(&check_interface_type_decl,
TREE_NOTHROW(check_interface_type_decl) = 0;
// If the call succeeds, pull out the value.
- gcc_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(rhs_type_tree) == RECORD_TYPE);
tree rhs_field = DECL_CHAIN(TYPE_FIELDS(rhs_type_tree));
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__object") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(rhs_field)), "__object") == 0);
tree val = build3(COMPONENT_REF, TREE_TYPE(rhs_field), rhs_tree, rhs_field,
NULL_TREE);
// Otherwise it points to the value.
if (lhs_type->points_to() == NULL)
{
- val = fold_convert_loc(location, build_pointer_type(lhs_type_tree), val);
- val = build_fold_indirect_ref_loc(location, val);
+ val = fold_convert_loc(location.gcc_location(),
+ build_pointer_type(lhs_type_tree), val);
+ val = build_fold_indirect_ref_loc(location.gcc_location(), val);
}
return build2(COMPOUND_EXPR, lhs_type_tree, call,
- fold_convert_loc(location, lhs_type_tree, val));
+ fold_convert_loc(location.gcc_location(), lhs_type_tree, val));
}
// Convert an expression to a tree. This is implemented by the child
return build_complex(type, real, imag);
}
else
- gcc_unreachable();
+ go_unreachable();
}
// Return a tree for VAL in TYPE.
return build_complex(type, build_real(TREE_TYPE(type), r2), imag);
}
else
- gcc_unreachable();
+ go_unreachable();
}
// Return a tree for REAL/IMAG in TYPE.
build_real(TREE_TYPE(type), r4));
}
else
- gcc_unreachable();
+ go_unreachable();
}
// Return a tree which evaluates to true if VAL, of arbitrary integer
tree
Expression::check_bounds(tree val, tree bound_type, tree sofar,
- source_location loc)
+ Location loc)
{
tree val_type = TREE_TYPE(val);
tree ret = NULL_TREE;
if (!TYPE_UNSIGNED(val_type))
{
- ret = fold_build2_loc(loc, LT_EXPR, boolean_type_node, val,
+ ret = fold_build2_loc(loc.gcc_location(), LT_EXPR, boolean_type_node, val,
build_int_cst(val_type, 0));
if (ret == boolean_false_node)
ret = NULL_TREE;
}
- if ((TYPE_UNSIGNED(val_type) && !TYPE_UNSIGNED(bound_type))
- || TYPE_SIZE(val_type) > TYPE_SIZE(bound_type))
+ HOST_WIDE_INT val_type_size = int_size_in_bytes(val_type);
+ HOST_WIDE_INT bound_type_size = int_size_in_bytes(bound_type);
+ go_assert(val_type_size != -1 && bound_type_size != -1);
+ if (val_type_size > bound_type_size
+ || (val_type_size == bound_type_size
+ && TYPE_UNSIGNED(val_type)
+ && !TYPE_UNSIGNED(bound_type)))
{
tree max = TYPE_MAX_VALUE(bound_type);
- tree big = fold_build2_loc(loc, GT_EXPR, boolean_type_node, val,
- fold_convert_loc(loc, val_type, max));
+ tree big = fold_build2_loc(loc.gcc_location(), GT_EXPR, boolean_type_node,
+ val, fold_convert_loc(loc.gcc_location(),
+ val_type, max));
if (big == boolean_false_node)
;
else if (ret == NULL_TREE)
ret = big;
else
- ret = fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node,
- ret, big);
+ ret = fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR,
+ boolean_type_node, ret, big);
}
if (ret == NULL_TREE)
else if (sofar == NULL_TREE)
return ret;
else
- return fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node,
+ return fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR, boolean_type_node,
sofar, ret);
}
+void
+Expression::dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ this->do_dump_expression(ast_dump_context);
+}
+
// Error expressions. This are used to avoid cascading errors.
class Error_expression : public Expression
{
public:
- Error_expression(source_location location)
+ Error_expression(Location location)
: Expression(EXPRESSION_ERROR, location)
{ }
{ return true; }
bool
- do_integer_constant_value(bool, mpz_t val, Type**) const
- {
- mpz_set_ui(val, 0);
- return true;
- }
-
- bool
- do_float_constant_value(mpfr_t val, Type**) const
- {
- mpfr_set_ui(val, 0, GMP_RNDN);
- return true;
- }
-
- bool
- do_complex_constant_value(mpfr_t real, mpfr_t imag, Type**) const
+ do_numeric_constant_value(Numeric_constant* nc) const
{
- mpfr_set_ui(real, 0, GMP_RNDN);
- mpfr_set_ui(imag, 0, GMP_RNDN);
+ nc->set_unsigned_long(NULL, 0);
return true;
}
tree
do_get_tree(Translate_context*)
{ return error_mark_node; }
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
};
+// Dump the ast representation for an error expression to a dump context.
+
+void
+Error_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "_Error_" ;
+}
+
Expression*
-Expression::make_error(source_location location)
+Expression::make_error(Location location)
{
return new Error_expression(location);
}
Type_expression : public Expression
{
public:
- Type_expression(Type* type, source_location location)
+ Type_expression(Type* type, Location location)
: Expression(EXPRESSION_TYPE, location),
type_(type)
{ }
tree
do_get_tree(Translate_context*)
- { gcc_unreachable(); }
+ { go_unreachable(); }
+ void do_dump_expression(Ast_dump_context*) const;
+
private:
// The type which we are representing as an expression.
Type* type_;
};
+void
+Type_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_type(this->type_);
+}
+
Expression*
-Expression::make_type(Type* type, source_location location)
+Expression::make_type(Type* type, Location location)
{
return new Type_expression(type, location);
}
// However, it can happen, at least when we have an invalid const
// whose initializer refers to the const itself. In that case we
// may ask for the type when lowering the const itself.
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return Type::make_error_type();
}
// if necessary.
Expression*
-Var_expression::do_lower(Gogo* gogo, Named_object* function, int)
+Var_expression::do_lower(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter, int)
{
if (this->variable_->is_variable())
{
// reference to a variable which is local to an enclosing
// function will be a reference to a field in a closure.
if (var->is_global())
- function = NULL;
- var->lower_init_expression(gogo, function);
+ {
+ function = NULL;
+ inserter = NULL;
+ }
+ var->lower_init_expression(gogo, function, inserter);
}
return this;
}
else if (this->variable_->is_result_variable())
return this->variable_->result_var_value()->type();
else
- gcc_unreachable();
+ go_unreachable();
}
// Determine the type of a reference to a variable.
Var_expression::do_address_taken(bool escapes)
{
if (!escapes)
- ;
- else if (this->variable_->is_variable())
- this->variable_->var_value()->set_address_taken();
- else if (this->variable_->is_result_variable())
- this->variable_->result_var_value()->set_address_taken();
+ {
+ if (this->variable_->is_variable())
+ this->variable_->var_value()->set_non_escaping_address_taken();
+ else if (this->variable_->is_result_variable())
+ this->variable_->result_var_value()->set_non_escaping_address_taken();
+ else
+ go_unreachable();
+ }
else
- gcc_unreachable();
+ {
+ if (this->variable_->is_variable())
+ this->variable_->var_value()->set_address_taken();
+ else if (this->variable_->is_result_variable())
+ this->variable_->result_var_value()->set_address_taken();
+ else
+ go_unreachable();
+ }
}
// Get the tree for a reference to a variable.
tree
Var_expression::do_get_tree(Translate_context* context)
{
- return this->variable_->get_tree(context->gogo(), context->function());
+ Bvariable* bvar = this->variable_->get_backend_variable(context->gogo(),
+ context->function());
+ tree ret = var_to_tree(bvar);
+ if (ret == error_mark_node)
+ return error_mark_node;
+ bool is_in_heap;
+ if (this->variable_->is_variable())
+ is_in_heap = this->variable_->var_value()->is_in_heap();
+ else if (this->variable_->is_result_variable())
+ is_in_heap = this->variable_->result_var_value()->is_in_heap();
+ else
+ go_unreachable();
+ if (is_in_heap)
+ {
+ ret = build_fold_indirect_ref_loc(this->location().gcc_location(), ret);
+ TREE_THIS_NOTRAP(ret) = 1;
+ }
+ return ret;
+}
+
+// Ast dump for variable expression.
+
+void
+Var_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << this->variable_->name() ;
}
// Make a reference to a variable in an expression.
Expression*
-Expression::make_var_reference(Named_object* var, source_location location)
+Expression::make_var_reference(Named_object* var, Location location)
{
if (var->is_sink())
return Expression::make_sink(location);
// Get a tree referring to the variable.
tree
-Temporary_reference_expression::do_get_tree(Translate_context*)
+Temporary_reference_expression::do_get_tree(Translate_context* context)
+{
+ Bvariable* bvar = this->statement_->get_backend_variable(context);
+
+ // The gcc backend can't represent the same set of recursive types
+ // that the Go frontend can. In some cases this means that a
+ // temporary variable won't have the right backend type. Correct
+ // that here by adding a type cast. We need to use base() to push
+ // the circularity down one level.
+ tree ret = var_to_tree(bvar);
+ if (!this->is_lvalue_
+ && POINTER_TYPE_P(TREE_TYPE(ret))
+ && VOID_TYPE_P(TREE_TYPE(TREE_TYPE(ret))))
+ {
+ Btype* type_btype = this->type()->base()->get_backend(context->gogo());
+ tree type_tree = type_to_tree(type_btype);
+ ret = fold_convert_loc(this->location().gcc_location(), type_tree, ret);
+ }
+ return ret;
+}
+
+// Ast dump for temporary reference.
+
+void
+Temporary_reference_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
{
- return this->statement_->get_decl();
+ ast_dump_context->dump_temp_variable_name(this->statement_);
}
// Make a reference to a temporary variable.
-Expression*
+Temporary_reference_expression*
Expression::make_temporary_reference(Temporary_statement* statement,
- source_location location)
+ Location location)
{
return new Temporary_reference_expression(statement, location);
}
+// Class Set_and_use_temporary_expression.
+
+// Return the type.
+
+Type*
+Set_and_use_temporary_expression::do_type()
+{
+ return this->statement_->type();
+}
+
+// Take the address.
+
+void
+Set_and_use_temporary_expression::do_address_taken(bool)
+{
+ this->statement_->set_is_address_taken();
+}
+
+// Return the backend representation.
+
+tree
+Set_and_use_temporary_expression::do_get_tree(Translate_context* context)
+{
+ Bvariable* bvar = this->statement_->get_backend_variable(context);
+ tree var_tree = var_to_tree(bvar);
+ tree expr_tree = this->expr_->get_tree(context);
+ if (var_tree == error_mark_node || expr_tree == error_mark_node)
+ return error_mark_node;
+ Location loc = this->location();
+ return build2_loc(loc.gcc_location(), COMPOUND_EXPR, TREE_TYPE(var_tree),
+ build2_loc(loc.gcc_location(), MODIFY_EXPR, void_type_node,
+ var_tree, expr_tree),
+ var_tree);
+}
+
+// Dump.
+
+void
+Set_and_use_temporary_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << '(';
+ ast_dump_context->dump_temp_variable_name(this->statement_);
+ ast_dump_context->ostream() << " = ";
+ this->expr_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << ')';
+}
+
+// Make a set-and-use temporary.
+
+Set_and_use_temporary_expression*
+Expression::make_set_and_use_temporary(Temporary_statement* statement,
+ Expression* expr, Location location)
+{
+ return new Set_and_use_temporary_expression(statement, expr, location);
+}
+
// A sink expression--a use of the blank identifier _.
class Sink_expression : public Expression
{
public:
- Sink_expression(source_location location)
+ Sink_expression(Location location)
: Expression(EXPRESSION_SINK, location),
type_(NULL), var_(NULL_TREE)
{ }
tree
do_get_tree(Translate_context*);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type of this sink variable.
Type* type_;
{
if (this->var_ == NULL_TREE)
{
- gcc_assert(this->type_ != NULL && !this->type_->is_sink_type());
- this->var_ = create_tmp_var(this->type_->get_tree(context->gogo()),
- "blank");
+ go_assert(this->type_ != NULL && !this->type_->is_sink_type());
+ Btype* bt = this->type_->get_backend(context->gogo());
+ this->var_ = create_tmp_var(type_to_tree(bt), "blank");
}
return this->var_;
}
+// Ast dump for sink expression.
+
+void
+Sink_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "_" ;
+}
+
// Make a sink expression.
Expression*
-Expression::make_sink(source_location location)
+Expression::make_sink(Location location)
{
return new Sink_expression(location);
}
else if (this->function_->is_function_declaration())
return this->function_->func_declaration_value()->type();
else
- gcc_unreachable();
+ go_unreachable();
}
// Get the tree for a function expression without evaluating the
else if (this->function_->is_function_declaration())
fntype = this->function_->func_declaration_value()->type();
else
- gcc_unreachable();
+ go_unreachable();
// Builtin functions are handled specially by Call_expression. We
// can't take their address.
if (fntype->is_builtin())
{
- error_at(this->location(), "invalid use of special builtin function %qs",
+ error_at(this->location(),
+ "invalid use of special builtin function %qs; must be called",
this->function_->name().c_str());
return error_mark_node;
}
else if (no->is_function_declaration())
fndecl = no->func_declaration_value()->get_or_make_decl(gogo, no, id);
else
- gcc_unreachable();
+ go_unreachable();
if (fndecl == error_mark_node)
return error_mark_node;
- return build_fold_addr_expr_loc(this->location(), fndecl);
+ return build_fold_addr_expr_loc(this->location().gcc_location(), fndecl);
}
// Get the tree for a function expression. This is used when we take
if (fnaddr == error_mark_node)
return error_mark_node;
- gcc_assert(TREE_CODE(fnaddr) == ADDR_EXPR
+ go_assert(TREE_CODE(fnaddr) == ADDR_EXPR
&& TREE_CODE(TREE_OPERAND(fnaddr, 0)) == FUNCTION_DECL);
TREE_ADDRESSABLE(TREE_OPERAND(fnaddr, 0)) = 1;
if (!this->function_->is_function()
|| this->function_->func_value()->enclosing() == NULL)
{
- gcc_assert(this->closure_ == NULL);
+ go_assert(this->closure_ == NULL);
return fnaddr;
}
closure_tree = closure->get_tree(context);
if (closure_tree == error_mark_node)
return error_mark_node;
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(closure_tree)));
+ go_assert(POINTER_TYPE_P(TREE_TYPE(closure_tree)));
}
// Now we need to build some code on the heap. This code will load
return gogo->make_trampoline(fnaddr, closure_tree, this->location());
}
+// Ast dump for function.
+
+void
+Func_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << this->function_->name();
+ if (this->closure_ != NULL)
+ {
+ ast_dump_context->ostream() << " {closure = ";
+ this->closure_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << "}";
+ }
+}
+
// Make a reference to a function in an expression.
Expression*
Expression::make_func_reference(Named_object* function, Expression* closure,
- source_location location)
+ Location location)
{
return new Func_expression(function, closure, location);
}
// Lower a reference to an unknown name.
Expression*
-Unknown_expression::do_lower(Gogo*, Named_object*, int)
+Unknown_expression::do_lower(Gogo*, Named_object*, Statement_inserter*, int)
{
- source_location location = this->location();
+ Location location = this->location();
Named_object* no = this->named_object_;
Named_object* real;
if (!no->is_unknown())
{
if (this->is_composite_literal_key_)
return this;
- error_at(location, "reference to undefined name %qs",
- this->named_object_->message_name().c_str());
+ if (!this->no_error_message_)
+ error_at(location, "reference to undefined name %qs",
+ this->named_object_->message_name().c_str());
return Expression::make_error(location);
}
}
case Named_object::NAMED_OBJECT_TYPE_DECLARATION:
if (this->is_composite_literal_key_)
return this;
- error_at(location, "reference to undefined type %qs",
- real->message_name().c_str());
+ if (!this->no_error_message_)
+ error_at(location, "reference to undefined type %qs",
+ real->message_name().c_str());
return Expression::make_error(location);
case Named_object::NAMED_OBJECT_VAR:
+ real->var_value()->set_is_used();
return Expression::make_var_reference(real, location);
case Named_object::NAMED_OBJECT_FUNC:
case Named_object::NAMED_OBJECT_FUNC_DECLARATION:
case Named_object::NAMED_OBJECT_PACKAGE:
if (this->is_composite_literal_key_)
return this;
- error_at(location, "unexpected reference to package");
+ if (!this->no_error_message_)
+ error_at(location, "unexpected reference to package");
return Expression::make_error(location);
default:
- gcc_unreachable();
+ go_unreachable();
}
}
+// Dump the ast representation for an unknown expression to a dump context.
+
+void
+Unknown_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "_Unknown_(" << this->named_object_->name()
+ << ")";
+}
+
// Make a reference to an unknown name.
-Expression*
-Expression::make_unknown_reference(Named_object* no, source_location location)
+Unknown_expression*
+Expression::make_unknown_reference(Named_object* no, Location location)
{
- gcc_assert(no->resolve()->is_unknown());
return new Unknown_expression(no, location);
}
class Boolean_expression : public Expression
{
public:
- Boolean_expression(bool val, source_location location)
+ Boolean_expression(bool val, Location location)
: Expression(EXPRESSION_BOOLEAN, location),
val_(val), type_(NULL)
{ }
do_export(Export* exp) const
{ exp->write_c_string(this->val_ ? "true" : "false"); }
+ void
+ do_dump_expression(Ast_dump_context* ast_dump_context) const
+ { ast_dump_context->ostream() << (this->val_ ? "true" : "false"); }
+
private:
// The constant.
bool val_;
// Make a boolean expression.
Expression*
-Expression::make_boolean(bool val, source_location location)
+Expression::make_boolean(bool val, Location location)
{
return new Boolean_expression(val, location);
}
return context->gogo()->go_string_constant_tree(this->val_);
}
-// Export a string expression.
+ // Write string literal to string dump.
void
-String_expression::do_export(Export* exp) const
+String_expression::export_string(String_dump* exp,
+ const String_expression* str)
{
std::string s;
- s.reserve(this->val_.length() * 4 + 2);
+ s.reserve(str->val_.length() * 4 + 2);
s += '"';
- for (std::string::const_iterator p = this->val_.begin();
- p != this->val_.end();
+ for (std::string::const_iterator p = str->val_.begin();
+ p != str->val_.end();
++p)
{
if (*p == '\\' || *p == '"')
exp->write_string(s);
}
+// Export a string expression.
+
+void
+String_expression::do_export(Export* exp) const
+{
+ String_expression::export_string(exp, this);
+}
+
// Import a string expression.
Expression*
return Expression::make_string(val, imp->location());
}
+// Ast dump for string expression.
+
+void
+String_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ String_expression::export_string(ast_dump_context, this);
+}
+
// Make a string expression.
Expression*
-Expression::make_string(const std::string& val, source_location location)
+Expression::make_string(const std::string& val, Location location)
{
return new String_expression(val, location);
}
class Integer_expression : public Expression
{
public:
- Integer_expression(const mpz_t* val, Type* type, source_location location)
+ Integer_expression(const mpz_t* val, Type* type, bool is_character_constant,
+ Location location)
: Expression(EXPRESSION_INTEGER, location),
- type_(type)
+ type_(type), is_character_constant_(is_character_constant)
{ mpz_init_set(this->val_, *val); }
static Expression*
do_import(Import*);
- // Return whether VAL fits in the type.
- static bool
- check_constant(mpz_t val, Type*, source_location);
+ // Write VAL to string dump.
+ static void
+ export_integer(String_dump* exp, const mpz_t val);
- // Write VAL to export data.
+ // Write VAL to dump context.
static void
- export_integer(Export* exp, const mpz_t val);
+ dump_integer(Ast_dump_context* ast_dump_context, const mpz_t val);
protected:
bool
{ return true; }
bool
- do_integer_constant_value(bool, mpz_t val, Type** ptype) const;
+ do_numeric_constant_value(Numeric_constant* nc) const;
Type*
do_type();
Expression*
do_copy()
- { return Expression::make_integer(&this->val_, this->type_,
- this->location()); }
+ {
+ if (this->is_character_constant_)
+ return Expression::make_character(&this->val_, this->type_,
+ this->location());
+ else
+ return Expression::make_integer(&this->val_, this->type_,
+ this->location());
+ }
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The integer value.
mpz_t val_;
// The type so far.
Type* type_;
+ // Whether this is a character constant.
+ bool is_character_constant_;
};
-// Return an integer constant value.
+// Return a numeric constant for this expression. We have to mark
+// this as a character when appropriate.
bool
-Integer_expression::do_integer_constant_value(bool, mpz_t val,
- Type** ptype) const
+Integer_expression::do_numeric_constant_value(Numeric_constant* nc) const
{
- if (this->type_ != NULL)
- *ptype = this->type_;
- mpz_set(val, this->val_);
+ if (this->is_character_constant_)
+ nc->set_rune(this->type_, this->val_);
+ else
+ nc->set_int(this->type_, this->val_);
return true;
}
Integer_expression::do_type()
{
if (this->type_ == NULL)
- this->type_ = Type::make_abstract_integer_type();
+ {
+ if (this->is_character_constant_)
+ this->type_ = Type::make_abstract_character_type();
+ else
+ this->type_ = Type::make_abstract_integer_type();
+ }
return this->type_;
}
{
if (this->type_ != NULL && !this->type_->is_abstract())
;
- else if (context->type != NULL
- && (context->type->integer_type() != NULL
- || context->type->float_type() != NULL
- || context->type->complex_type() != NULL))
+ else if (context->type != NULL && context->type->is_numeric_type())
this->type_ = context->type;
else if (!context->may_be_abstract)
- this->type_ = Type::lookup_integer_type("int");
-}
-
-// Return true if the integer VAL fits in the range of the type TYPE.
-// Otherwise give an error and return false. TYPE may be NULL.
-
-bool
-Integer_expression::check_constant(mpz_t val, Type* type,
- source_location location)
-{
- if (type == NULL)
- return true;
- Integer_type* itype = type->integer_type();
- if (itype == NULL || itype->is_abstract())
- return true;
-
- int bits = mpz_sizeinbase(val, 2);
-
- if (itype->is_unsigned())
{
- // For an unsigned type we can only accept a nonnegative number,
- // and we must be able to represent at least BITS.
- if (mpz_sgn(val) >= 0
- && bits <= itype->bits())
- return true;
- }
- else
- {
- // For a signed type we need an extra bit to indicate the sign.
- // We have to handle the most negative integer specially.
- if (bits + 1 <= itype->bits()
- || (bits <= itype->bits()
- && mpz_sgn(val) < 0
- && (mpz_scan1(val, 0)
- == static_cast<unsigned long>(itype->bits() - 1))
- && mpz_scan0(val, itype->bits()) == ULONG_MAX))
- return true;
+ if (this->is_character_constant_)
+ this->type_ = Type::lookup_integer_type("int32");
+ else
+ this->type_ = Type::lookup_integer_type("int");
}
-
- error_at(location, "integer constant overflow");
- return false;
}
// Check the type of an integer constant.
void
Integer_expression::do_check_types(Gogo*)
{
- if (this->type_ == NULL)
+ Type* type = this->type_;
+ if (type == NULL)
return;
- if (!Integer_expression::check_constant(this->val_, this->type_,
- this->location()))
+ Numeric_constant nc;
+ if (this->is_character_constant_)
+ nc.set_rune(NULL, this->val_);
+ else
+ nc.set_int(NULL, this->val_);
+ if (!nc.set_type(type, true, this->location()))
this->set_is_error();
}
Gogo* gogo = context->gogo();
tree type;
if (this->type_ != NULL && !this->type_->is_abstract())
- type = this->type_->get_tree(gogo);
+ type = type_to_tree(this->type_->get_backend(gogo));
else if (this->type_ != NULL && this->type_->float_type() != NULL)
{
// We are converting to an abstract floating point type.
- type = Type::lookup_float_type("float64")->get_tree(gogo);
+ Type* ftype = Type::lookup_float_type("float64");
+ type = type_to_tree(ftype->get_backend(gogo));
}
else if (this->type_ != NULL && this->type_->complex_type() != NULL)
{
// We are converting to an abstract complex type.
- type = Type::lookup_complex_type("complex128")->get_tree(gogo);
+ Type* ctype = Type::lookup_complex_type("complex128");
+ type = type_to_tree(ctype->get_backend(gogo));
}
else
{
// not <=, because we need an extra bit for the sign bit.
int bits = mpz_sizeinbase(this->val_, 2);
if (bits < INT_TYPE_SIZE)
- type = Type::lookup_integer_type("int")->get_tree(gogo);
+ {
+ Type* t = Type::lookup_integer_type("int");
+ type = type_to_tree(t->get_backend(gogo));
+ }
else if (bits < 64)
- type = Type::lookup_integer_type("int64")->get_tree(gogo);
+ {
+ Type* t = Type::lookup_integer_type("int64");
+ type = type_to_tree(t->get_backend(gogo));
+ }
else
type = long_long_integer_type_node;
}
// Write VAL to export data.
void
-Integer_expression::export_integer(Export* exp, const mpz_t val)
+Integer_expression::export_integer(String_dump* exp, const mpz_t val)
{
char* s = mpz_get_str(NULL, 10, val);
exp->write_c_string(s);
Integer_expression::do_export(Export* exp) const
{
Integer_expression::export_integer(exp, this->val_);
+ if (this->is_character_constant_)
+ exp->write_c_string("'");
// A trailing space lets us reliably identify the end of the number.
exp->write_c_string(" ");
}
else if (num.find('.') == std::string::npos
&& num.find('E') == std::string::npos)
{
+ bool is_character_constant = (!num.empty()
+ && num[num.length() - 1] == '\'');
+ if (is_character_constant)
+ num = num.substr(0, num.length() - 1);
mpz_t val;
if (mpz_init_set_str(val, num.c_str(), 10) != 0)
{
num.c_str());
return Expression::make_error(imp->location());
}
- Expression* ret = Expression::make_integer(&val, NULL, imp->location());
+ Expression* ret;
+ if (is_character_constant)
+ ret = Expression::make_character(&val, NULL, imp->location());
+ else
+ ret = Expression::make_integer(&val, NULL, imp->location());
mpz_clear(val);
return ret;
}
return ret;
}
}
+// Ast dump for integer expression.
+
+void
+Integer_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ if (this->is_character_constant_)
+ ast_dump_context->ostream() << '\'';
+ Integer_expression::export_integer(ast_dump_context, this->val_);
+ if (this->is_character_constant_)
+ ast_dump_context->ostream() << '\'';
+}
// Build a new integer value.
Expression*
-Expression::make_integer(const mpz_t* val, Type* type,
- source_location location)
+Expression::make_integer(const mpz_t* val, Type* type, Location location)
+{
+ return new Integer_expression(val, type, false, location);
+}
+
+// Build a new character constant value.
+
+Expression*
+Expression::make_character(const mpz_t* val, Type* type, Location location)
{
- return new Integer_expression(val, type, location);
+ return new Integer_expression(val, type, true, location);
}
// Floats.
class Float_expression : public Expression
{
public:
- Float_expression(const mpfr_t* val, Type* type, source_location location)
+ Float_expression(const mpfr_t* val, Type* type, Location location)
: Expression(EXPRESSION_FLOAT, location),
type_(type)
{
mpfr_init_set(this->val_, *val, GMP_RNDN);
}
- // Constrain VAL to fit into TYPE.
+ // Write VAL to export data.
static void
- constrain_float(mpfr_t val, Type* type);
-
- // Return whether VAL fits in the type.
- static bool
- check_constant(mpfr_t val, Type*, source_location);
+ export_float(String_dump* exp, const mpfr_t val);
- // Write VAL to export data.
+ // Write VAL to dump file.
static void
- export_float(Export* exp, const mpfr_t val);
+ dump_float(Ast_dump_context* ast_dump_context, const mpfr_t val);
protected:
bool
{ return true; }
bool
- do_float_constant_value(mpfr_t val, Type**) const;
+ do_numeric_constant_value(Numeric_constant* nc) const
+ {
+ nc->set_float(this->type_, this->val_);
+ return true;
+ }
Type*
do_type();
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The floating point value.
mpfr_t val_;
Type* type_;
};
-// Constrain VAL to fit into TYPE.
-
-void
-Float_expression::constrain_float(mpfr_t val, Type* type)
-{
- Float_type* ftype = type->float_type();
- if (ftype != NULL && !ftype->is_abstract())
- {
- tree type_tree = ftype->type_tree();
- REAL_VALUE_TYPE rvt;
- real_from_mpfr(&rvt, val, type_tree, GMP_RNDN);
- real_convert(&rvt, TYPE_MODE(type_tree), &rvt);
- mpfr_from_real(val, &rvt, GMP_RNDN);
- }
-}
-
-// Return a floating point constant value.
-
-bool
-Float_expression::do_float_constant_value(mpfr_t val, Type** ptype) const
-{
- if (this->type_ != NULL)
- *ptype = this->type_;
- mpfr_set(val, this->val_, GMP_RNDN);
- return true;
-}
-
// Return the current type. If we haven't set the type yet, we return
// an abstract float type.
this->type_ = Type::lookup_float_type("float64");
}
-// Return true if the floating point value VAL fits in the range of
-// the type TYPE. Otherwise give an error and return false. TYPE may
-// be NULL.
+// Check the type of a float value.
-bool
-Float_expression::check_constant(mpfr_t val, Type* type,
- source_location location)
+void
+Float_expression::do_check_types(Gogo*)
{
+ Type* type = this->type_;
if (type == NULL)
- return true;
- Float_type* ftype = type->float_type();
- if (ftype == NULL || ftype->is_abstract())
- return true;
+ return;
+ Numeric_constant nc;
+ nc.set_float(NULL, this->val_);
+ if (!nc.set_type(this->type_, true, this->location()))
+ this->set_is_error();
+}
- // A NaN or Infinity always fits in the range of the type.
- if (mpfr_nan_p(val) || mpfr_inf_p(val) || mpfr_zero_p(val))
- return true;
+// Get a tree for a float constant.
- mp_exp_t exp = mpfr_get_exp(val);
- mp_exp_t max_exp;
- switch (ftype->bits())
- {
- case 32:
- max_exp = 128;
- break;
- case 64:
- max_exp = 1024;
- break;
- default:
- gcc_unreachable();
- }
- if (exp > max_exp)
- {
- error_at(location, "floating point constant overflow");
- return false;
- }
- return true;
-}
-
-// Check the type of a float value.
-
-void
-Float_expression::do_check_types(Gogo*)
-{
- if (this->type_ == NULL)
- return;
-
- if (!Float_expression::check_constant(this->val_, this->type_,
- this->location()))
- this->set_is_error();
-
- Integer_type* integer_type = this->type_->integer_type();
- if (integer_type != NULL)
- {
- if (!mpfr_integer_p(this->val_))
- this->report_error(_("floating point constant truncated to integer"));
- else
- {
- gcc_assert(!integer_type->is_abstract());
- mpz_t ival;
- mpz_init(ival);
- mpfr_get_z(ival, this->val_, GMP_RNDN);
- Integer_expression::check_constant(ival, integer_type,
- this->location());
- mpz_clear(ival);
- }
- }
-}
-
-// Get a tree for a float constant.
-
-tree
-Float_expression::do_get_tree(Translate_context* context)
-{
- Gogo* gogo = context->gogo();
- tree type;
- if (this->type_ != NULL && !this->type_->is_abstract())
- type = this->type_->get_tree(gogo);
- else if (this->type_ != NULL && this->type_->integer_type() != NULL)
+tree
+Float_expression::do_get_tree(Translate_context* context)
+{
+ Gogo* gogo = context->gogo();
+ tree type;
+ if (this->type_ != NULL && !this->type_->is_abstract())
+ type = type_to_tree(this->type_->get_backend(gogo));
+ else if (this->type_ != NULL && this->type_->integer_type() != NULL)
{
// We have an abstract integer type. We just hope for the best.
- type = Type::lookup_integer_type("int")->get_tree(gogo);
+ type = type_to_tree(Type::lookup_integer_type("int")->get_backend(gogo));
}
else
{
// If we still have an abstract type here, then this is being
// used in a constant expression which didn't get reduced. We
// just use float64 and hope for the best.
- type = Type::lookup_float_type("float64")->get_tree(gogo);
+ Type* ft = Type::lookup_float_type("float64");
+ type = type_to_tree(ft->get_backend(gogo));
}
return Expression::float_constant_tree(this->val_, type);
}
-// Write a floating point number to export data.
+// Write a floating point number to a string dump.
void
-Float_expression::export_float(Export *exp, const mpfr_t val)
+Float_expression::export_float(String_dump *exp, const mpfr_t val)
{
mp_exp_t exponent;
char* s = mpfr_get_str(NULL, &exponent, 10, 0, val, GMP_RNDN);
exp->write_c_string(" ");
}
+// Dump a floating point number to the dump file.
+
+void
+Float_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ Float_expression::export_float(ast_dump_context, this->val_);
+}
+
// Make a float expression.
Expression*
-Expression::make_float(const mpfr_t* val, Type* type, source_location location)
+Expression::make_float(const mpfr_t* val, Type* type, Location location)
{
return new Float_expression(val, type, location);
}
{
public:
Complex_expression(const mpfr_t* real, const mpfr_t* imag, Type* type,
- source_location location)
+ Location location)
: Expression(EXPRESSION_COMPLEX, location),
type_(type)
{
mpfr_init_set(this->imag_, *imag, GMP_RNDN);
}
- // Constrain REAL/IMAG to fit into TYPE.
+ // Write REAL/IMAG to string dump.
static void
- constrain_complex(mpfr_t real, mpfr_t imag, Type* type);
+ export_complex(String_dump* exp, const mpfr_t real, const mpfr_t val);
- // Return whether REAL/IMAG fits in the type.
- static bool
- check_constant(mpfr_t real, mpfr_t imag, Type*, source_location);
-
- // Write REAL/IMAG to export data.
+ // Write REAL/IMAG to dump context.
static void
- export_complex(Export* exp, const mpfr_t real, const mpfr_t val);
-
+ dump_complex(Ast_dump_context* ast_dump_context,
+ const mpfr_t real, const mpfr_t val);
+
protected:
bool
do_is_constant() const
{ return true; }
bool
- do_complex_constant_value(mpfr_t real, mpfr_t imag, Type**) const;
+ do_numeric_constant_value(Numeric_constant* nc) const
+ {
+ nc->set_complex(this->type_, this->real_, this->imag_);
+ return true;
+ }
Type*
do_type();
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The real part.
mpfr_t real_;
Type* type_;
};
-// Constrain REAL/IMAG to fit into TYPE.
-
-void
-Complex_expression::constrain_complex(mpfr_t real, mpfr_t imag, Type* type)
-{
- Complex_type* ctype = type->complex_type();
- if (ctype != NULL && !ctype->is_abstract())
- {
- tree type_tree = ctype->type_tree();
-
- REAL_VALUE_TYPE rvt;
- real_from_mpfr(&rvt, real, TREE_TYPE(type_tree), GMP_RNDN);
- real_convert(&rvt, TYPE_MODE(TREE_TYPE(type_tree)), &rvt);
- mpfr_from_real(real, &rvt, GMP_RNDN);
-
- real_from_mpfr(&rvt, imag, TREE_TYPE(type_tree), GMP_RNDN);
- real_convert(&rvt, TYPE_MODE(TREE_TYPE(type_tree)), &rvt);
- mpfr_from_real(imag, &rvt, GMP_RNDN);
- }
-}
-
-// Return a complex constant value.
-
-bool
-Complex_expression::do_complex_constant_value(mpfr_t real, mpfr_t imag,
- Type** ptype) const
-{
- if (this->type_ != NULL)
- *ptype = this->type_;
- mpfr_set(real, this->real_, GMP_RNDN);
- mpfr_set(imag, this->imag_, GMP_RNDN);
- return true;
-}
-
// Return the current type. If we haven't set the type yet, we return
// an abstract complex type.
this->type_ = Type::lookup_complex_type("complex128");
}
-// Return true if the complex value REAL/IMAG fits in the range of the
-// type TYPE. Otherwise give an error and return false. TYPE may be
-// NULL.
-
-bool
-Complex_expression::check_constant(mpfr_t real, mpfr_t imag, Type* type,
- source_location location)
-{
- if (type == NULL)
- return true;
- Complex_type* ctype = type->complex_type();
- if (ctype == NULL || ctype->is_abstract())
- return true;
-
- mp_exp_t max_exp;
- switch (ctype->bits())
- {
- case 64:
- max_exp = 128;
- break;
- case 128:
- max_exp = 1024;
- break;
- default:
- gcc_unreachable();
- }
-
- // A NaN or Infinity always fits in the range of the type.
- if (!mpfr_nan_p(real) && !mpfr_inf_p(real) && !mpfr_zero_p(real))
- {
- if (mpfr_get_exp(real) > max_exp)
- {
- error_at(location, "complex real part constant overflow");
- return false;
- }
- }
-
- if (!mpfr_nan_p(imag) && !mpfr_inf_p(imag) && !mpfr_zero_p(imag))
- {
- if (mpfr_get_exp(imag) > max_exp)
- {
- error_at(location, "complex imaginary part constant overflow");
- return false;
- }
- }
-
- return true;
-}
-
// Check the type of a complex value.
void
Complex_expression::do_check_types(Gogo*)
{
- if (this->type_ == NULL)
+ Type* type = this->type_;
+ if (type == NULL)
return;
-
- if (!Complex_expression::check_constant(this->real_, this->imag_,
- this->type_, this->location()))
+ Numeric_constant nc;
+ nc.set_complex(NULL, this->real_, this->imag_);
+ if (!nc.set_type(this->type_, true, this->location()))
this->set_is_error();
}
Gogo* gogo = context->gogo();
tree type;
if (this->type_ != NULL && !this->type_->is_abstract())
- type = this->type_->get_tree(gogo);
+ type = type_to_tree(this->type_->get_backend(gogo));
else
{
// If we still have an abstract type here, this this is being
// used in a constant expression which didn't get reduced. We
// just use complex128 and hope for the best.
- type = Type::lookup_complex_type("complex128")->get_tree(gogo);
+ Type* ct = Type::lookup_complex_type("complex128");
+ type = type_to_tree(ct->get_backend(gogo));
}
return Expression::complex_constant_tree(this->real_, this->imag_, type);
}
// Write REAL/IMAG to export data.
void
-Complex_expression::export_complex(Export* exp, const mpfr_t real,
+Complex_expression::export_complex(String_dump* exp, const mpfr_t real,
const mpfr_t imag)
{
if (!mpfr_zero_p(real))
exp->write_c_string(" ");
}
+// Dump a complex expression to the dump file.
+
+void
+Complex_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ Complex_expression::export_complex(ast_dump_context,
+ this->real_,
+ this->imag_);
+}
+
// Make a complex expression.
Expression*
Expression::make_complex(const mpfr_t* real, const mpfr_t* imag, Type* type,
- source_location location)
+ Location location)
{
return new Complex_expression(real, imag, type, location);
}
class Const_expression : public Expression
{
public:
- Const_expression(Named_object* constant, source_location location)
+ Const_expression(Named_object* constant, Location location)
: Expression(EXPRESSION_CONST_REFERENCE, location),
constant_(constant), type_(NULL), seen_(false)
{ }
do_traverse(Traverse*);
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
bool
do_is_constant() const
{ return true; }
bool
- do_integer_constant_value(bool, mpz_t val, Type**) const;
-
- bool
- do_float_constant_value(mpfr_t val, Type**) const;
-
- bool
- do_complex_constant_value(mpfr_t real, mpfr_t imag, Type**) const;
+ do_numeric_constant_value(Numeric_constant* nc) const;
bool
do_string_constant_value(std::string* val) const
do_export(Export* exp) const
{ this->constant_->const_value()->expr()->export_expression(exp); }
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The constant.
Named_object* constant_;
// predeclared constant iota into an integer value.
Expression*
-Const_expression::do_lower(Gogo* gogo, Named_object*, int iota_value)
+Const_expression::do_lower(Gogo* gogo, Named_object*,
+ Statement_inserter*, int iota_value)
{
if (this->constant_->const_value()->expr()->classification()
== EXPRESSION_IOTA)
return this;
}
-// Return an integer constant value.
+// Return a numeric constant value.
bool
-Const_expression::do_integer_constant_value(bool iota_is_constant, mpz_t val,
- Type** ptype) const
+Const_expression::do_numeric_constant_value(Numeric_constant* nc) const
{
if (this->seen_)
return false;
- Type* ctype;
- if (this->type_ != NULL)
- ctype = this->type_;
- else
- ctype = this->constant_->const_value()->type();
- if (ctype != NULL && ctype->integer_type() == NULL)
- return false;
-
Expression* e = this->constant_->const_value()->expr();
-
+
this->seen_ = true;
- Type* t;
- bool r = e->integer_constant_value(iota_is_constant, val, &t);
+ bool r = e->numeric_constant_value(nc);
this->seen_ = false;
- if (r
- && ctype != NULL
- && !Integer_expression::check_constant(val, ctype, this->location()))
- return false;
-
- *ptype = ctype != NULL ? ctype : t;
- return r;
-}
-
-// Return a floating point constant value.
-
-bool
-Const_expression::do_float_constant_value(mpfr_t val, Type** ptype) const
-{
- if (this->seen_)
- return false;
-
Type* ctype;
if (this->type_ != NULL)
ctype = this->type_;
else
ctype = this->constant_->const_value()->type();
- if (ctype != NULL && ctype->float_type() == NULL)
- return false;
-
- this->seen_ = true;
-
- Type* t;
- bool r = this->constant_->const_value()->expr()->float_constant_value(val,
- &t);
-
- this->seen_ = false;
-
if (r && ctype != NULL)
{
- if (!Float_expression::check_constant(val, ctype, this->location()))
+ if (!nc->set_type(ctype, false, this->location()))
return false;
- Float_expression::constrain_float(val, ctype);
}
- *ptype = ctype != NULL ? ctype : t;
- return r;
-}
-
-// Return a complex constant value.
-
-bool
-Const_expression::do_complex_constant_value(mpfr_t real, mpfr_t imag,
- Type **ptype) const
-{
- if (this->seen_)
- return false;
-
- Type* ctype;
- if (this->type_ != NULL)
- ctype = this->type_;
- else
- ctype = this->constant_->const_value()->type();
- if (ctype != NULL && ctype->complex_type() == NULL)
- return false;
-
- this->seen_ = true;
-
- Type *t;
- bool r = this->constant_->const_value()->expr()->complex_constant_value(real,
- imag,
- &t);
- this->seen_ = false;
-
- if (r && ctype != NULL)
- {
- if (!Complex_expression::check_constant(real, imag, ctype,
- this->location()))
- return false;
- Complex_expression::constrain_complex(real, imag, ctype);
- }
- *ptype = ctype != NULL ? ctype : t;
return r;
}
if (ctype != NULL && !ctype->is_abstract())
;
else if (context->type != NULL
- && (context->type->integer_type() != NULL
- || context->type->float_type() != NULL
- || context->type->complex_type() != NULL)
- && (cetype->integer_type() != NULL
- || cetype->float_type() != NULL
- || cetype->complex_type() != NULL))
+ && context->type->is_numeric_type()
+ && cetype->is_numeric_type())
this->type_ = context->type;
else if (context->type != NULL
&& context->type->is_string_type()
this->check_for_init_loop();
- if (this->type_ == NULL || this->type_->is_abstract())
- return;
-
- // Check for integer overflow.
- if (this->type_->integer_type() != NULL)
+ // Check that numeric constant fits in type.
+ if (this->type_ != NULL && this->type_->is_numeric_type())
{
- mpz_t ival;
- mpz_init(ival);
- Type* dummy;
- if (!this->integer_constant_value(true, ival, &dummy))
+ Numeric_constant nc;
+ if (this->constant_->const_value()->expr()->numeric_constant_value(&nc))
{
- mpfr_t fval;
- mpfr_init(fval);
- Expression* cexpr = this->constant_->const_value()->expr();
- if (cexpr->float_constant_value(fval, &dummy))
- {
- if (!mpfr_integer_p(fval))
- this->report_error(_("floating point constant "
- "truncated to integer"));
- else
- {
- mpfr_get_z(ival, fval, GMP_RNDN);
- Integer_expression::check_constant(ival, this->type_,
- this->location());
- }
- }
- mpfr_clear(fval);
+ if (!nc.set_type(this->type_, true, this->location()))
+ this->set_is_error();
}
- mpz_clear(ival);
}
}
type_tree = NULL_TREE;
else
{
- type_tree = this->type_->get_tree(gogo);
+ type_tree = type_to_tree(this->type_->get_backend(gogo));
if (type_tree == error_mark_node)
return error_mark_node;
}
// object is an abstract int or float, we try to get the abstract
// value. Otherwise we may lose something in the conversion.
if (this->type_ != NULL
+ && this->type_->is_numeric_type()
&& (this->constant_->const_value()->type() == NULL
|| this->constant_->const_value()->type()->is_abstract()))
{
Expression* expr = this->constant_->const_value()->expr();
- mpz_t ival;
- mpz_init(ival);
- Type* t;
- if (expr->integer_constant_value(true, ival, &t))
- {
- tree ret = Expression::integer_constant_tree(ival, type_tree);
- mpz_clear(ival);
- return ret;
- }
- mpz_clear(ival);
-
- mpfr_t fval;
- mpfr_init(fval);
- if (expr->float_constant_value(fval, &t))
- {
- tree ret = Expression::float_constant_tree(fval, type_tree);
- mpfr_clear(fval);
- return ret;
- }
-
- mpfr_t imag;
- mpfr_init(imag);
- if (expr->complex_constant_value(fval, imag, &t))
+ Numeric_constant nc;
+ if (expr->numeric_constant_value(&nc)
+ && nc.set_type(this->type_, false, this->location()))
{
- tree ret = Expression::complex_constant_tree(fval, imag, type_tree);
- mpfr_clear(fval);
- mpfr_clear(imag);
- return ret;
+ Expression* e = nc.expression(this->location());
+ return e->get_tree(context);
}
- mpfr_clear(imag);
- mpfr_clear(fval);
}
tree const_tree = this->constant_->get_tree(gogo, context->function());
else if (TREE_CODE(type_tree) == COMPLEX_TYPE)
ret = fold(convert_to_complex(type_tree, const_tree));
else
- gcc_unreachable();
+ go_unreachable();
return ret;
}
+// Dump ast representation for constant expression.
+
+void
+Const_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << this->constant_->name();
+}
+
// Make a reference to a constant in an expression.
Expression*
Expression::make_const_reference(Named_object* constant,
- source_location location)
+ Location location)
{
return new Const_expression(constant, location);
}
class Nil_expression : public Expression
{
public:
- Nil_expression(source_location location)
+ Nil_expression(Location location)
: Expression(EXPRESSION_NIL, location)
{ }
void
do_export(Export* exp) const
{ exp->write_c_string("nil"); }
+
+ void
+ do_dump_expression(Ast_dump_context* ast_dump_context) const
+ { ast_dump_context->ostream() << "nil"; }
};
// Import a nil expression.
// Make a nil expression.
Expression*
-Expression::make_nil(source_location location)
+Expression::make_nil(Location location)
{
return new Nil_expression(location);
}
class Iota_expression : public Parser_expression
{
public:
- Iota_expression(source_location location)
+ Iota_expression(Location location)
: Parser_expression(EXPRESSION_IOTA, location)
{ }
protected:
Expression*
- do_lower(Gogo*, Named_object*, int)
- { gcc_unreachable(); }
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int)
+ { go_unreachable(); }
// There should only ever be one of these.
Expression*
do_copy()
- { gcc_unreachable(); }
+ { go_unreachable(); }
+
+ void
+ do_dump_expression(Ast_dump_context* ast_dump_context) const
+ { ast_dump_context->ostream() << "iota"; }
};
// Make an iota expression. This is only called for one case: the
Expression*
Expression::make_iota()
{
- static Iota_expression iota_expression(UNKNOWN_LOCATION);
+ static Iota_expression iota_expression(Linemap::unknown_location());
return &iota_expression;
}
{
public:
Type_conversion_expression(Type* type, Expression* expr,
- source_location location)
+ Location location)
: Expression(EXPRESSION_CONVERSION, location),
type_(type), expr_(expr), may_convert_function_types_(false)
{ }
do_traverse(Traverse* traverse);
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
bool
do_is_constant() const
{ return this->expr_->is_constant(); }
bool
- do_integer_constant_value(bool, mpz_t, Type**) const;
-
- bool
- do_float_constant_value(mpfr_t, Type**) const;
-
- bool
- do_complex_constant_value(mpfr_t, mpfr_t, Type**) const;
+ do_numeric_constant_value(Numeric_constant*) const;
bool
do_string_constant_value(std::string*) const;
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type to convert to.
Type* type_;
// Convert to a constant at lowering time.
Expression*
-Type_conversion_expression::do_lower(Gogo*, Named_object*, int)
+Type_conversion_expression::do_lower(Gogo*, Named_object*,
+ Statement_inserter*, int)
{
Type* type = this->type_;
Expression* val = this->expr_;
- source_location location = this->location();
-
- if (type->integer_type() != NULL)
- {
- mpz_t ival;
- mpz_init(ival);
- Type* dummy;
- if (val->integer_constant_value(false, ival, &dummy))
- {
- if (!Integer_expression::check_constant(ival, type, location))
- mpz_set_ui(ival, 0);
- Expression* ret = Expression::make_integer(&ival, type, location);
- mpz_clear(ival);
- return ret;
- }
-
- mpfr_t fval;
- mpfr_init(fval);
- if (val->float_constant_value(fval, &dummy))
- {
- if (!mpfr_integer_p(fval))
- {
- error_at(location,
- "floating point constant truncated to integer");
- return Expression::make_error(location);
- }
- mpfr_get_z(ival, fval, GMP_RNDN);
- if (!Integer_expression::check_constant(ival, type, location))
- mpz_set_ui(ival, 0);
- Expression* ret = Expression::make_integer(&ival, type, location);
- mpfr_clear(fval);
- mpz_clear(ival);
- return ret;
- }
- mpfr_clear(fval);
- mpz_clear(ival);
- }
-
- if (type->float_type() != NULL)
- {
- mpfr_t fval;
- mpfr_init(fval);
- Type* dummy;
- if (val->float_constant_value(fval, &dummy))
- {
- if (!Float_expression::check_constant(fval, type, location))
- mpfr_set_ui(fval, 0, GMP_RNDN);
- Float_expression::constrain_float(fval, type);
- Expression *ret = Expression::make_float(&fval, type, location);
- mpfr_clear(fval);
- return ret;
- }
- mpfr_clear(fval);
- }
+ Location location = this->location();
- if (type->complex_type() != NULL)
+ if (type->is_numeric_type())
{
- mpfr_t real;
- mpfr_t imag;
- mpfr_init(real);
- mpfr_init(imag);
- Type* dummy;
- if (val->complex_constant_value(real, imag, &dummy))
+ Numeric_constant nc;
+ if (val->numeric_constant_value(&nc))
{
- if (!Complex_expression::check_constant(real, imag, type, location))
- {
- mpfr_set_ui(real, 0, GMP_RNDN);
- mpfr_set_ui(imag, 0, GMP_RNDN);
- }
- Complex_expression::constrain_complex(real, imag, type);
- Expression* ret = Expression::make_complex(&real, &imag, type,
- location);
- mpfr_clear(real);
- mpfr_clear(imag);
- return ret;
+ if (!nc.set_type(type, true, location))
+ return Expression::make_error(location);
+ return nc.expression(location);
}
- mpfr_clear(real);
- mpfr_clear(imag);
}
- if (type->is_open_array_type() && type->named_type() == NULL)
+ if (type->is_slice_type())
{
Type* element_type = type->array_type()->element_type()->forwarded();
- bool is_byte = element_type == Type::lookup_integer_type("uint8");
- bool is_int = element_type == Type::lookup_integer_type("int");
- if (is_byte || is_int)
+ bool is_byte = (element_type->integer_type() != NULL
+ && element_type->integer_type()->is_byte());
+ bool is_rune = (element_type->integer_type() != NULL
+ && element_type->integer_type()->is_rune());
+ if (is_byte || is_rune)
{
std::string s;
if (val->string_constant_value(&s))
return this;
}
-// Return the constant integer value if there is one.
+// Return the constant numeric value if there is one.
bool
-Type_conversion_expression::do_integer_constant_value(bool iota_is_constant,
- mpz_t val,
- Type** ptype) const
+Type_conversion_expression::do_numeric_constant_value(
+ Numeric_constant* nc) const
{
- if (this->type_->integer_type() == NULL)
+ if (!this->type_->is_numeric_type())
return false;
+ if (!this->expr_->numeric_constant_value(nc))
+ return false;
+ return nc->set_type(this->type_, false, this->location());
+}
- mpz_t ival;
- mpz_init(ival);
- Type* dummy;
- if (this->expr_->integer_constant_value(iota_is_constant, ival, &dummy))
+// Return the constant string value if there is one.
+
+bool
+Type_conversion_expression::do_string_constant_value(std::string* val) const
+{
+ if (this->type_->is_string_type()
+ && this->expr_->type()->integer_type() != NULL)
{
- if (!Integer_expression::check_constant(ival, this->type_,
- this->location()))
+ Numeric_constant nc;
+ if (this->expr_->numeric_constant_value(&nc))
{
- mpz_clear(ival);
- return false;
- }
- mpz_set(val, ival);
- mpz_clear(ival);
- *ptype = this->type_;
- return true;
- }
- mpz_clear(ival);
-
- mpfr_t fval;
- mpfr_init(fval);
- if (this->expr_->float_constant_value(fval, &dummy))
- {
- mpfr_get_z(val, fval, GMP_RNDN);
- mpfr_clear(fval);
- if (!Integer_expression::check_constant(val, this->type_,
- this->location()))
- return false;
- *ptype = this->type_;
- return true;
- }
- mpfr_clear(fval);
-
- return false;
-}
-
-// Return the constant floating point value if there is one.
-
-bool
-Type_conversion_expression::do_float_constant_value(mpfr_t val,
- Type** ptype) const
-{
- if (this->type_->float_type() == NULL)
- return false;
-
- mpfr_t fval;
- mpfr_init(fval);
- Type* dummy;
- if (this->expr_->float_constant_value(fval, &dummy))
- {
- if (!Float_expression::check_constant(fval, this->type_,
- this->location()))
- {
- mpfr_clear(fval);
- return false;
- }
- mpfr_set(val, fval, GMP_RNDN);
- mpfr_clear(fval);
- Float_expression::constrain_float(val, this->type_);
- *ptype = this->type_;
- return true;
- }
- mpfr_clear(fval);
-
- return false;
-}
-
-// Return the constant complex value if there is one.
-
-bool
-Type_conversion_expression::do_complex_constant_value(mpfr_t real,
- mpfr_t imag,
- Type **ptype) const
-{
- if (this->type_->complex_type() == NULL)
- return false;
-
- mpfr_t rval;
- mpfr_t ival;
- mpfr_init(rval);
- mpfr_init(ival);
- Type* dummy;
- if (this->expr_->complex_constant_value(rval, ival, &dummy))
- {
- if (!Complex_expression::check_constant(rval, ival, this->type_,
- this->location()))
- {
- mpfr_clear(rval);
- mpfr_clear(ival);
- return false;
- }
- mpfr_set(real, rval, GMP_RNDN);
- mpfr_set(imag, ival, GMP_RNDN);
- mpfr_clear(rval);
- mpfr_clear(ival);
- Complex_expression::constrain_complex(real, imag, this->type_);
- *ptype = this->type_;
- return true;
- }
- mpfr_clear(rval);
- mpfr_clear(ival);
-
- return false;
-}
-
-// Return the constant string value if there is one.
-
-bool
-Type_conversion_expression::do_string_constant_value(std::string* val) const
-{
- if (this->type_->is_string_type()
- && this->expr_->type()->integer_type() != NULL)
- {
- mpz_t ival;
- mpz_init(ival);
- Type* dummy;
- if (this->expr_->integer_constant_value(false, ival, &dummy))
- {
- unsigned long ulval = mpz_get_ui(ival);
- if (mpz_cmp_ui(ival, ulval) == 0)
+ unsigned long ival;
+ if (nc.to_unsigned_long(&ival) == Numeric_constant::NC_UL_VALID)
{
- Lex::append_char(ulval, true, val, this->location());
- mpz_clear(ival);
+ val->clear();
+ Lex::append_char(ival, true, val, this->location());
return true;
}
}
- mpz_clear(ival);
}
// FIXME: Could handle conversion from const []int here.
Type_conversion_expression::do_get_tree(Translate_context* context)
{
Gogo* gogo = context->gogo();
- tree type_tree = this->type_->get_tree(gogo);
+ tree type_tree = type_to_tree(this->type_->get_backend(gogo));
tree expr_tree = this->expr_->get_tree(context);
if (type_tree == error_mark_node
|| expr_type->is_unsafe_pointer_type())
ret = fold(convert_to_integer(type_tree, expr_tree));
else
- gcc_unreachable();
+ go_unreachable();
}
else if (type->float_type() != NULL)
{
|| expr_type->float_type() != NULL)
ret = fold(convert_to_real(type_tree, expr_tree));
else
- gcc_unreachable();
+ go_unreachable();
}
else if (type->complex_type() != NULL)
{
if (expr_type->complex_type() != NULL)
ret = fold(convert_to_complex(type_tree, expr_tree));
else
- gcc_unreachable();
+ go_unreachable();
}
else if (type->is_string_type()
&& expr_type->integer_type() != NULL)
integer_type_node,
fold_convert(integer_type_node, expr_tree));
}
- else if (type->is_string_type()
- && (expr_type->array_type() != NULL
- || (expr_type->points_to() != NULL
- && expr_type->points_to()->array_type() != NULL)))
+ else if (type->is_string_type() && expr_type->is_slice_type())
{
- Type* t = expr_type;
- if (t->points_to() != NULL)
- {
- t = t->points_to();
- expr_tree = build_fold_indirect_ref(expr_tree);
- }
if (!DECL_P(expr_tree))
expr_tree = save_expr(expr_tree);
- Array_type* a = t->array_type();
+ Array_type* a = expr_type->array_type();
Type* e = a->element_type()->forwarded();
- gcc_assert(e->integer_type() != NULL);
+ go_assert(e->integer_type() != NULL);
tree valptr = fold_convert(const_ptr_type_node,
a->value_pointer_tree(gogo, expr_tree));
tree len = a->length_tree(gogo, expr_tree);
- len = fold_convert_loc(this->location(), size_type_node, len);
- if (e->integer_type()->is_unsigned()
- && e->integer_type()->bits() == 8)
+ len = fold_convert_loc(this->location().gcc_location(), integer_type_node,
+ len);
+ if (e->integer_type()->is_byte())
{
static tree byte_array_to_string_fndecl;
ret = Gogo::call_builtin(&byte_array_to_string_fndecl,
type_tree,
const_ptr_type_node,
valptr,
- size_type_node,
+ integer_type_node,
len);
}
else
{
- gcc_assert(e == Type::lookup_integer_type("int"));
+ go_assert(e->integer_type()->is_rune());
static tree int_array_to_string_fndecl;
ret = Gogo::call_builtin(&int_array_to_string_fndecl,
this->location(),
type_tree,
const_ptr_type_node,
valptr,
- size_type_node,
+ integer_type_node,
len);
}
}
- else if (type->is_open_array_type() && expr_type->is_string_type())
+ else if (type->is_slice_type() && expr_type->is_string_type())
{
Type* e = type->array_type()->element_type()->forwarded();
- gcc_assert(e->integer_type() != NULL);
- if (e->integer_type()->is_unsigned()
- && e->integer_type()->bits() == 8)
+ go_assert(e->integer_type() != NULL);
+ if (e->integer_type()->is_byte())
{
- static tree string_to_byte_array_fndecl;
+ tree string_to_byte_array_fndecl = NULL_TREE;
ret = Gogo::call_builtin(&string_to_byte_array_fndecl,
this->location(),
"__go_string_to_byte_array",
}
else
{
- gcc_assert(e == Type::lookup_integer_type("int"));
- static tree string_to_int_array_fndecl;
+ go_assert(e->integer_type()->is_rune());
+ tree string_to_int_array_fndecl = NULL_TREE;
ret = Gogo::call_builtin(&string_to_int_array_fndecl,
this->location(),
"__go_string_to_int_array",
else if (this->may_convert_function_types_
&& type->function_type() != NULL
&& expr_type->function_type() != NULL)
- ret = fold_convert_loc(this->location(), type_tree, expr_tree);
+ ret = fold_convert_loc(this->location().gcc_location(), type_tree,
+ expr_tree);
else
ret = Expression::convert_for_assignment(context, type, expr_type,
expr_tree, this->location());
return Expression::make_cast(type, val, imp->location());
}
+// Dump ast representation for a type conversion expression.
+
+void
+Type_conversion_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << "(";
+ ast_dump_context->dump_expression(this->expr_);
+ ast_dump_context->ostream() << ") ";
+}
+
// Make a type cast expression.
Expression*
-Expression::make_cast(Type* type, Expression* val, source_location location)
+Expression::make_cast(Type* type, Expression* val, Location location)
{
if (type->is_error_type() || val->is_error_expression())
return Expression::make_error(location);
return new Type_conversion_expression(type, val, location);
}
+// An unsafe type conversion, used to pass values to builtin functions.
+
+class Unsafe_type_conversion_expression : public Expression
+{
+ public:
+ Unsafe_type_conversion_expression(Type* type, Expression* expr,
+ Location location)
+ : Expression(EXPRESSION_UNSAFE_CONVERSION, location),
+ type_(type), expr_(expr)
+ { }
+
+ protected:
+ int
+ do_traverse(Traverse* traverse);
+
+ Type*
+ do_type()
+ { return this->type_; }
+
+ void
+ do_determine_type(const Type_context*)
+ { this->expr_->determine_type_no_context(); }
+
+ Expression*
+ do_copy()
+ {
+ return new Unsafe_type_conversion_expression(this->type_,
+ this->expr_->copy(),
+ this->location());
+ }
+
+ tree
+ do_get_tree(Translate_context*);
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
+ private:
+ // The type to convert to.
+ Type* type_;
+ // The expression to convert.
+ Expression* expr_;
+};
+
+// Traversal.
+
+int
+Unsafe_type_conversion_expression::do_traverse(Traverse* traverse)
+{
+ if (Expression::traverse(&this->expr_, traverse) == TRAVERSE_EXIT
+ || Type::traverse(this->type_, traverse) == TRAVERSE_EXIT)
+ return TRAVERSE_EXIT;
+ return TRAVERSE_CONTINUE;
+}
+
+// Convert to backend representation.
+
+tree
+Unsafe_type_conversion_expression::do_get_tree(Translate_context* context)
+{
+ // We are only called for a limited number of cases.
+
+ Type* t = this->type_;
+ Type* et = this->expr_->type();
+
+ tree type_tree = type_to_tree(this->type_->get_backend(context->gogo()));
+ tree expr_tree = this->expr_->get_tree(context);
+ if (type_tree == error_mark_node || expr_tree == error_mark_node)
+ return error_mark_node;
+
+ Location loc = this->location();
+
+ bool use_view_convert = false;
+ if (t->is_slice_type())
+ {
+ go_assert(et->is_slice_type());
+ use_view_convert = true;
+ }
+ else if (t->map_type() != NULL)
+ go_assert(et->map_type() != NULL);
+ else if (t->channel_type() != NULL)
+ go_assert(et->channel_type() != NULL);
+ else if (t->points_to() != NULL)
+ go_assert(et->points_to() != NULL || et->is_nil_type());
+ else if (et->is_unsafe_pointer_type())
+ go_assert(t->points_to() != NULL);
+ else if (t->interface_type() != NULL && !t->interface_type()->is_empty())
+ {
+ go_assert(et->interface_type() != NULL
+ && !et->interface_type()->is_empty());
+ use_view_convert = true;
+ }
+ else if (t->interface_type() != NULL && t->interface_type()->is_empty())
+ {
+ go_assert(et->interface_type() != NULL
+ && et->interface_type()->is_empty());
+ use_view_convert = true;
+ }
+ else if (t->integer_type() != NULL)
+ {
+ go_assert(et->is_boolean_type()
+ || et->integer_type() != NULL
+ || et->function_type() != NULL
+ || et->points_to() != NULL
+ || et->map_type() != NULL
+ || et->channel_type() != NULL);
+ return convert_to_integer(type_tree, expr_tree);
+ }
+ else
+ go_unreachable();
+
+ if (use_view_convert)
+ return fold_build1_loc(loc.gcc_location(), VIEW_CONVERT_EXPR, type_tree,
+ expr_tree);
+ else
+ return fold_convert_loc(loc.gcc_location(), type_tree, expr_tree);
+}
+
+// Dump ast representation for an unsafe type conversion expression.
+
+void
+Unsafe_type_conversion_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << "(";
+ ast_dump_context->dump_expression(this->expr_);
+ ast_dump_context->ostream() << ") ";
+}
+
+// Make an unsafe type conversion expression.
+
+Expression*
+Expression::make_unsafe_cast(Type* type, Expression* expr,
+ Location location)
+{
+ return new Unsafe_type_conversion_expression(type, expr, location);
+}
+
// Unary expressions.
class Unary_expression : public Expression
{
public:
- Unary_expression(Operator op, Expression* expr, source_location location)
+ Unary_expression(Operator op, Expression* expr, Location location)
: Expression(EXPRESSION_UNARY, location),
- op_(op), escapes_(true), expr_(expr)
+ op_(op), escapes_(true), create_temp_(false), expr_(expr)
{ }
// Return the operator.
void
set_does_not_escape()
{
- gcc_assert(this->op_ == OPERATOR_AND);
+ go_assert(this->op_ == OPERATOR_AND);
this->escapes_ = false;
}
- // Apply unary opcode OP to UVAL, setting VAL. Return true if this
- // could be done, false if not.
- static bool
- eval_integer(Operator op, Type* utype, mpz_t uval, mpz_t val,
- source_location);
-
- // Apply unary opcode OP to UVAL, setting VAL. Return true if this
- // could be done, false if not.
- static bool
- eval_float(Operator op, mpfr_t uval, mpfr_t val);
+ // Record that this is an address expression which should create a
+ // temporary variable if necessary. This is used for method calls.
+ void
+ set_create_temp()
+ {
+ go_assert(this->op_ == OPERATOR_AND);
+ this->create_temp_ = true;
+ }
- // Apply unary opcode OP to UREAL/UIMAG, setting REAL/IMAG. Return
- // true if this could be done, false if not.
+ // Apply unary opcode OP to UNC, setting NC. Return true if this
+ // could be done, false if not. Issue errors for overflow.
static bool
- eval_complex(Operator op, mpfr_t ureal, mpfr_t uimag, mpfr_t real,
- mpfr_t imag);
+ eval_constant(Operator op, const Numeric_constant* unc,
+ Location, Numeric_constant* nc);
static Expression*
do_import(Import*);
{ return Expression::traverse(&this->expr_, traverse); }
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
bool
do_is_constant() const;
bool
- do_integer_constant_value(bool, mpz_t, Type**) const;
-
- bool
- do_float_constant_value(mpfr_t, Type**) const;
-
- bool
- do_complex_constant_value(mpfr_t, mpfr_t, Type**) const;
+ do_numeric_constant_value(Numeric_constant*) const;
Type*
do_type();
}
bool
+ do_must_eval_subexpressions_in_order(int*) const
+ { return this->op_ == OPERATOR_MULT; }
+
+ bool
do_is_addressable() const
{ return this->op_ == OPERATOR_MULT; }
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The unary operator to apply.
Operator op_;
// Normally true. False if this is an address expression which does
// not escape the current function.
bool escapes_;
+ // True if this is an address expression which should create a
+ // temporary variable if necessary.
+ bool create_temp_;
// The operand.
Expression* expr_;
};
// instead.
Expression*
-Unary_expression::do_lower(Gogo*, Named_object*, int)
+Unary_expression::do_lower(Gogo*, Named_object*, Statement_inserter*, int)
{
- source_location loc = this->location();
+ Location loc = this->location();
Operator op = this->op_;
Expression* expr = this->expr_;
if (op == OPERATOR_PLUS || op == OPERATOR_MINUS
|| op == OPERATOR_NOT || op == OPERATOR_XOR)
{
- Expression* ret = NULL;
-
- mpz_t eval;
- mpz_init(eval);
- Type* etype;
- if (expr->integer_constant_value(false, eval, &etype))
- {
- mpz_t val;
- mpz_init(val);
- if (Unary_expression::eval_integer(op, etype, eval, val, loc))
- ret = Expression::make_integer(&val, etype, loc);
- mpz_clear(val);
- }
- mpz_clear(eval);
- if (ret != NULL)
- return ret;
-
- if (op == OPERATOR_PLUS || op == OPERATOR_MINUS)
+ Numeric_constant nc;
+ if (expr->numeric_constant_value(&nc))
{
- mpfr_t fval;
- mpfr_init(fval);
- Type* ftype;
- if (expr->float_constant_value(fval, &ftype))
- {
- mpfr_t val;
- mpfr_init(val);
- if (Unary_expression::eval_float(op, fval, val))
- ret = Expression::make_float(&val, ftype, loc);
- mpfr_clear(val);
- }
- if (ret != NULL)
- {
- mpfr_clear(fval);
- return ret;
- }
-
- mpfr_t ival;
- mpfr_init(ival);
- if (expr->complex_constant_value(fval, ival, &ftype))
- {
- mpfr_t real;
- mpfr_t imag;
- mpfr_init(real);
- mpfr_init(imag);
- if (Unary_expression::eval_complex(op, fval, ival, real, imag))
- ret = Expression::make_complex(&real, &imag, ftype, loc);
- mpfr_clear(real);
- mpfr_clear(imag);
- }
- mpfr_clear(ival);
- mpfr_clear(fval);
- if (ret != NULL)
- return ret;
+ Numeric_constant result;
+ if (Unary_expression::eval_constant(op, &nc, loc, &result))
+ return result.expression(loc);
}
}
return this->expr_->is_constant();
}
-// Apply unary opcode OP to UVAL, setting VAL. UTYPE is the type of
-// UVAL, if known; it may be NULL. Return true if this could be done,
-// false if not.
+// Apply unary opcode OP to UNC, setting NC. Return true if this
+// could be done, false if not. Issue errors for overflow.
bool
-Unary_expression::eval_integer(Operator op, Type* utype, mpz_t uval, mpz_t val,
- source_location location)
+Unary_expression::eval_constant(Operator op, const Numeric_constant* unc,
+ Location location, Numeric_constant* nc)
{
switch (op)
{
case OPERATOR_PLUS:
- mpz_set(val, uval);
+ *nc = *unc;
return true;
+
case OPERATOR_MINUS:
- mpz_neg(val, uval);
- return Integer_expression::check_constant(val, utype, location);
- case OPERATOR_NOT:
- mpz_set_ui(val, mpz_cmp_si(uval, 0) == 0 ? 1 : 0);
- return true;
- case OPERATOR_XOR:
- if (utype == NULL
- || utype->integer_type() == NULL
- || utype->integer_type()->is_abstract())
- mpz_com(val, uval);
+ if (unc->is_int() || unc->is_rune())
+ break;
+ else if (unc->is_float())
+ {
+ mpfr_t uval;
+ unc->get_float(&uval);
+ mpfr_t val;
+ mpfr_init(val);
+ mpfr_neg(val, uval, GMP_RNDN);
+ nc->set_float(unc->type(), val);
+ mpfr_clear(uval);
+ mpfr_clear(val);
+ return true;
+ }
+ else if (unc->is_complex())
+ {
+ mpfr_t ureal, uimag;
+ unc->get_complex(&ureal, &uimag);
+ mpfr_t real, imag;
+ mpfr_init(real);
+ mpfr_init(imag);
+ mpfr_neg(real, ureal, GMP_RNDN);
+ mpfr_neg(imag, uimag, GMP_RNDN);
+ nc->set_complex(unc->type(), real, imag);
+ mpfr_clear(ureal);
+ mpfr_clear(uimag);
+ mpfr_clear(real);
+ mpfr_clear(imag);
+ return true;
+ }
else
- {
- // The number of HOST_WIDE_INTs that it takes to represent
- // UVAL.
- size_t count = ((mpz_sizeinbase(uval, 2)
- + HOST_BITS_PER_WIDE_INT
- - 1)
- / HOST_BITS_PER_WIDE_INT);
+ go_unreachable();
- unsigned HOST_WIDE_INT* phwi = new unsigned HOST_WIDE_INT[count];
- memset(phwi, 0, count * sizeof(HOST_WIDE_INT));
-
- size_t ecount;
- mpz_export(phwi, &ecount, -1, sizeof(HOST_WIDE_INT), 0, 0, uval);
- gcc_assert(ecount <= count);
-
- // Trim down to the number of words required by the type.
- size_t obits = utype->integer_type()->bits();
- if (!utype->integer_type()->is_unsigned())
- ++obits;
- size_t ocount = ((obits + HOST_BITS_PER_WIDE_INT - 1)
- / HOST_BITS_PER_WIDE_INT);
- gcc_assert(ocount <= ocount);
-
- for (size_t i = 0; i < ocount; ++i)
- phwi[i] = ~phwi[i];
-
- size_t clearbits = ocount * HOST_BITS_PER_WIDE_INT - obits;
- if (clearbits != 0)
- phwi[ocount - 1] &= (((unsigned HOST_WIDE_INT) (HOST_WIDE_INT) -1)
- >> clearbits);
-
- mpz_import(val, ocount, -1, sizeof(HOST_WIDE_INT), 0, 0, phwi);
+ case OPERATOR_NOT:
+ case OPERATOR_XOR:
+ break;
- delete[] phwi;
- }
- return Integer_expression::check_constant(val, utype, location);
case OPERATOR_AND:
case OPERATOR_MULT:
return false;
+
default:
- gcc_unreachable();
+ go_unreachable();
}
-}
-// Apply unary opcode OP to UVAL, setting VAL. Return true if this
-// could be done, false if not.
+ if (!unc->is_int() && !unc->is_rune())
+ return false;
+
+ mpz_t uval;
+ unc->get_int(&uval);
+ mpz_t val;
+ mpz_init(val);
-bool
-Unary_expression::eval_float(Operator op, mpfr_t uval, mpfr_t val)
-{
switch (op)
{
- case OPERATOR_PLUS:
- mpfr_set(val, uval, GMP_RNDN);
- return true;
case OPERATOR_MINUS:
- mpfr_neg(val, uval, GMP_RNDN);
- return true;
+ mpz_neg(val, uval);
+ break;
+
case OPERATOR_NOT:
+ mpz_set_ui(val, mpz_cmp_si(uval, 0) == 0 ? 1 : 0);
+ break;
+
case OPERATOR_XOR:
- case OPERATOR_AND:
- case OPERATOR_MULT:
- return false;
+ {
+ Type* utype = unc->type();
+ if (utype->integer_type() == NULL
+ || utype->integer_type()->is_abstract())
+ mpz_com(val, uval);
+ else
+ {
+ // The number of HOST_WIDE_INTs that it takes to represent
+ // UVAL.
+ size_t count = ((mpz_sizeinbase(uval, 2)
+ + HOST_BITS_PER_WIDE_INT
+ - 1)
+ / HOST_BITS_PER_WIDE_INT);
+
+ unsigned HOST_WIDE_INT* phwi = new unsigned HOST_WIDE_INT[count];
+ memset(phwi, 0, count * sizeof(HOST_WIDE_INT));
+
+ size_t obits = utype->integer_type()->bits();
+
+ if (!utype->integer_type()->is_unsigned() && mpz_sgn(uval) < 0)
+ {
+ mpz_t adj;
+ mpz_init_set_ui(adj, 1);
+ mpz_mul_2exp(adj, adj, obits);
+ mpz_add(uval, uval, adj);
+ mpz_clear(adj);
+ }
+
+ size_t ecount;
+ mpz_export(phwi, &ecount, -1, sizeof(HOST_WIDE_INT), 0, 0, uval);
+ go_assert(ecount <= count);
+
+ // Trim down to the number of words required by the type.
+ size_t ocount = ((obits + HOST_BITS_PER_WIDE_INT - 1)
+ / HOST_BITS_PER_WIDE_INT);
+ go_assert(ocount <= count);
+
+ for (size_t i = 0; i < ocount; ++i)
+ phwi[i] = ~phwi[i];
+
+ size_t clearbits = ocount * HOST_BITS_PER_WIDE_INT - obits;
+ if (clearbits != 0)
+ phwi[ocount - 1] &= (((unsigned HOST_WIDE_INT) (HOST_WIDE_INT) -1)
+ >> clearbits);
+
+ mpz_import(val, ocount, -1, sizeof(HOST_WIDE_INT), 0, 0, phwi);
+
+ if (!utype->integer_type()->is_unsigned()
+ && mpz_tstbit(val, obits - 1))
+ {
+ mpz_t adj;
+ mpz_init_set_ui(adj, 1);
+ mpz_mul_2exp(adj, adj, obits);
+ mpz_sub(val, val, adj);
+ mpz_clear(adj);
+ }
+
+ delete[] phwi;
+ }
+ }
+ break;
+
default:
- gcc_unreachable();
+ go_unreachable();
}
+
+ if (unc->is_rune())
+ nc->set_rune(NULL, val);
+ else
+ nc->set_int(NULL, val);
+
+ mpz_clear(uval);
+ mpz_clear(val);
+
+ return nc->set_type(unc->type(), true, location);
}
-// Apply unary opcode OP to RVAL/IVAL, setting REAL/IMAG. Return true
-// if this could be done, false if not.
+// Return the integral constant value of a unary expression, if it has one.
bool
-Unary_expression::eval_complex(Operator op, mpfr_t rval, mpfr_t ival,
- mpfr_t real, mpfr_t imag)
+Unary_expression::do_numeric_constant_value(Numeric_constant* nc) const
{
- switch (op)
+ Numeric_constant unc;
+ if (!this->expr_->numeric_constant_value(&unc))
+ return false;
+ return Unary_expression::eval_constant(this->op_, &unc, this->location(),
+ nc);
+}
+
+// Return the type of a unary expression.
+
+Type*
+Unary_expression::do_type()
+{
+ switch (this->op_)
{
case OPERATOR_PLUS:
- mpfr_set(real, rval, GMP_RNDN);
- mpfr_set(imag, ival, GMP_RNDN);
- return true;
case OPERATOR_MINUS:
- mpfr_neg(real, rval, GMP_RNDN);
- mpfr_neg(imag, ival, GMP_RNDN);
- return true;
case OPERATOR_NOT:
case OPERATOR_XOR:
- case OPERATOR_AND:
- case OPERATOR_MULT:
- return false;
- default:
- gcc_unreachable();
- }
-}
-
-// Return the integral constant value of a unary expression, if it has one.
-
-bool
-Unary_expression::do_integer_constant_value(bool iota_is_constant, mpz_t val,
- Type** ptype) const
-{
- mpz_t uval;
- mpz_init(uval);
- bool ret;
- if (!this->expr_->integer_constant_value(iota_is_constant, uval, ptype))
- ret = false;
- else
- ret = Unary_expression::eval_integer(this->op_, *ptype, uval, val,
- this->location());
- mpz_clear(uval);
- return ret;
-}
-
-// Return the floating point constant value of a unary expression, if
-// it has one.
-
-bool
-Unary_expression::do_float_constant_value(mpfr_t val, Type** ptype) const
-{
- mpfr_t uval;
- mpfr_init(uval);
- bool ret;
- if (!this->expr_->float_constant_value(uval, ptype))
- ret = false;
- else
- ret = Unary_expression::eval_float(this->op_, uval, val);
- mpfr_clear(uval);
- return ret;
-}
-
-// Return the complex constant value of a unary expression, if it has
-// one.
-
-bool
-Unary_expression::do_complex_constant_value(mpfr_t real, mpfr_t imag,
- Type** ptype) const
-{
- mpfr_t rval;
- mpfr_t ival;
- mpfr_init(rval);
- mpfr_init(ival);
- bool ret;
- if (!this->expr_->complex_constant_value(rval, ival, ptype))
- ret = false;
- else
- ret = Unary_expression::eval_complex(this->op_, rval, ival, real, imag);
- mpfr_clear(rval);
- mpfr_clear(ival);
- return ret;
-}
-
-// Return the type of a unary expression.
-
-Type*
-Unary_expression::do_type()
-{
- switch (this->op_)
- {
- case OPERATOR_PLUS:
- case OPERATOR_MINUS:
- case OPERATOR_NOT:
- case OPERATOR_XOR:
- return this->expr_->type();
-
+ return this->expr_->type();
+
case OPERATOR_AND:
return Type::make_pointer_type(this->expr_->type());
}
default:
- gcc_unreachable();
+ go_unreachable();
}
}
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
}
case OPERATOR_AND:
if (!this->expr_->is_addressable())
- this->report_error(_("invalid operand for unary %<&%>"));
+ {
+ if (!this->create_temp_)
+ this->report_error(_("invalid operand for unary %<&%>"));
+ }
else
this->expr_->address_taken(this->escapes_);
break;
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
}
tree
Unary_expression::do_get_tree(Translate_context* context)
{
+ Location loc = this->location();
+
+ // Taking the address of a set-and-use-temporary expression requires
+ // setting the temporary and then taking the address.
+ if (this->op_ == OPERATOR_AND)
+ {
+ Set_and_use_temporary_expression* sut =
+ this->expr_->set_and_use_temporary_expression();
+ if (sut != NULL)
+ {
+ Temporary_statement* temp = sut->temporary();
+ Bvariable* bvar = temp->get_backend_variable(context);
+ tree var_tree = var_to_tree(bvar);
+ Expression* val = sut->expression();
+ tree val_tree = val->get_tree(context);
+ if (var_tree == error_mark_node || val_tree == error_mark_node)
+ return error_mark_node;
+ tree addr_tree = build_fold_addr_expr_loc(loc.gcc_location(),
+ var_tree);
+ return build2_loc(loc.gcc_location(), COMPOUND_EXPR,
+ TREE_TYPE(addr_tree),
+ build2_loc(sut->location().gcc_location(),
+ MODIFY_EXPR, void_type_node,
+ var_tree, val_tree),
+ addr_tree);
+ }
+ }
+
tree expr = this->expr_->get_tree(context);
if (expr == error_mark_node)
return error_mark_node;
- source_location loc = this->location();
switch (this->op_)
{
case OPERATOR_PLUS:
tree compute_type = excess_precision_type(type);
if (compute_type != NULL_TREE)
expr = ::convert(compute_type, expr);
- tree ret = fold_build1_loc(loc, NEGATE_EXPR,
+ tree ret = fold_build1_loc(loc.gcc_location(), NEGATE_EXPR,
(compute_type != NULL_TREE
? compute_type
: type),
case OPERATOR_NOT:
if (TREE_CODE(TREE_TYPE(expr)) == BOOLEAN_TYPE)
- return fold_build1_loc(loc, TRUTH_NOT_EXPR, TREE_TYPE(expr), expr);
+ return fold_build1_loc(loc.gcc_location(), TRUTH_NOT_EXPR,
+ TREE_TYPE(expr), expr);
else
- return fold_build2_loc(loc, NE_EXPR, boolean_type_node, expr,
- build_int_cst(TREE_TYPE(expr), 0));
+ return fold_build2_loc(loc.gcc_location(), NE_EXPR, boolean_type_node,
+ expr, build_int_cst(TREE_TYPE(expr), 0));
case OPERATOR_XOR:
- return fold_build1_loc(loc, BIT_NOT_EXPR, TREE_TYPE(expr), expr);
+ return fold_build1_loc(loc.gcc_location(), BIT_NOT_EXPR, TREE_TYPE(expr),
+ expr);
case OPERATOR_AND:
- // We should not see a non-constant constructor here; cases
- // where we would see one should have been moved onto the heap
- // at parse time. Taking the address of a nonconstant
- // constructor will not do what the programmer expects.
- gcc_assert(TREE_CODE(expr) != CONSTRUCTOR || TREE_CONSTANT(expr));
- gcc_assert(TREE_CODE(expr) != ADDR_EXPR);
+ if (!this->create_temp_)
+ {
+ // We should not see a non-constant constructor here; cases
+ // where we would see one should have been moved onto the
+ // heap at parse time. Taking the address of a nonconstant
+ // constructor will not do what the programmer expects.
+ go_assert(TREE_CODE(expr) != CONSTRUCTOR || TREE_CONSTANT(expr));
+ go_assert(TREE_CODE(expr) != ADDR_EXPR);
+ }
// Build a decl for a constant constructor.
if (TREE_CODE(expr) == CONSTRUCTOR && TREE_CONSTANT(expr))
{
- tree decl = build_decl(this->location(), VAR_DECL,
+ tree decl = build_decl(this->location().gcc_location(), VAR_DECL,
create_tmp_var_name("C"), TREE_TYPE(expr));
DECL_EXTERNAL(decl) = 0;
TREE_PUBLIC(decl) = 0;
expr = decl;
}
- return build_fold_addr_expr_loc(loc, expr);
+ if (this->create_temp_
+ && !TREE_ADDRESSABLE(TREE_TYPE(expr))
+ && !DECL_P(expr)
+ && TREE_CODE(expr) != INDIRECT_REF
+ && TREE_CODE(expr) != COMPONENT_REF)
+ {
+ tree tmp = create_tmp_var(TREE_TYPE(expr), get_name(expr));
+ DECL_IGNORED_P(tmp) = 1;
+ DECL_INITIAL(tmp) = expr;
+ TREE_ADDRESSABLE(tmp) = 1;
+ return build2_loc(loc.gcc_location(), COMPOUND_EXPR,
+ build_pointer_type(TREE_TYPE(expr)),
+ build1_loc(loc.gcc_location(), DECL_EXPR,
+ void_type_node, tmp),
+ build_fold_addr_expr_loc(loc.gcc_location(), tmp));
+ }
+
+ return build_fold_addr_expr_loc(loc.gcc_location(), expr);
case OPERATOR_MULT:
{
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(expr)));
+ go_assert(POINTER_TYPE_P(TREE_TYPE(expr)));
// If we are dereferencing the pointer to a large struct, we
// need to check for nil. We don't bother to check for small
// structs because we expect the system to crash on a nil
// pointer dereference.
- HOST_WIDE_INT s = int_size_in_bytes(TREE_TYPE(TREE_TYPE(expr)));
- if (s == -1 || s >= 4096)
+ tree target_type_tree = TREE_TYPE(TREE_TYPE(expr));
+ if (!VOID_TYPE_P(target_type_tree))
{
- if (!DECL_P(expr))
- expr = save_expr(expr);
- tree compare = fold_build2_loc(loc, EQ_EXPR, boolean_type_node,
- expr,
- fold_convert(TREE_TYPE(expr),
- null_pointer_node));
- tree crash = Gogo::runtime_error(RUNTIME_ERROR_NIL_DEREFERENCE,
- loc);
- expr = fold_build2_loc(loc, COMPOUND_EXPR, TREE_TYPE(expr),
- build3(COND_EXPR, void_type_node,
- compare, crash, NULL_TREE),
- expr);
+ HOST_WIDE_INT s = int_size_in_bytes(target_type_tree);
+ if (s == -1 || s >= 4096)
+ {
+ if (!DECL_P(expr))
+ expr = save_expr(expr);
+ tree compare = fold_build2_loc(loc.gcc_location(), EQ_EXPR,
+ boolean_type_node,
+ expr,
+ fold_convert(TREE_TYPE(expr),
+ null_pointer_node));
+ tree crash = Gogo::runtime_error(RUNTIME_ERROR_NIL_DEREFERENCE,
+ loc);
+ expr = fold_build2_loc(loc.gcc_location(), COMPOUND_EXPR,
+ TREE_TYPE(expr), build3(COND_EXPR,
+ void_type_node,
+ compare, crash,
+ NULL_TREE),
+ expr);
+ }
}
// If the type of EXPR is a recursive pointer type, then we
// need to insert a cast before indirecting.
- if (TREE_TYPE(TREE_TYPE(expr)) == ptr_type_node)
+ if (VOID_TYPE_P(target_type_tree))
{
Type* pt = this->expr_->type()->points_to();
- tree ind = pt->get_tree(context->gogo());
- expr = fold_convert_loc(loc, build_pointer_type(ind), expr);
+ tree ind = type_to_tree(pt->get_backend(context->gogo()));
+ expr = fold_convert_loc(loc.gcc_location(),
+ build_pointer_type(ind), expr);
}
- return build_fold_indirect_ref_loc(loc, expr);
+ return build_fold_indirect_ref_loc(loc.gcc_location(), expr);
}
default:
- gcc_unreachable();
+ go_unreachable();
}
}
case OPERATOR_AND:
case OPERATOR_MULT:
default:
- gcc_unreachable();
+ go_unreachable();
}
this->expr_->export_expression(exp);
}
op = OPERATOR_XOR;
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
imp->require_c_string(" ");
Expression* expr = Expression::import_expression(imp);
return Expression::make_unary(op, expr, imp->location());
}
+// Dump ast representation of an unary expression.
+
+void
+Unary_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_operator(this->op_);
+ ast_dump_context->ostream() << "(";
+ ast_dump_context->dump_expression(this->expr_);
+ ast_dump_context->ostream() << ") ";
+}
+
// Make a unary expression.
Expression*
-Expression::make_unary(Operator op, Expression* expr, source_location location)
+Expression::make_unary(Operator op, Expression* expr, Location location)
{
return new Unary_expression(op, expr, location);
}
return Expression::traverse(&this->right_, traverse);
}
-// Compare integer constants according to OP.
+// Return the type to use for a binary operation on operands of
+// LEFT_TYPE and RIGHT_TYPE. These are the types of constants and as
+// such may be NULL or abstract.
+
+bool
+Binary_expression::operation_type(Operator op, Type* left_type,
+ Type* right_type, Type** result_type)
+{
+ if (left_type != right_type
+ && !left_type->is_abstract()
+ && !right_type->is_abstract()
+ && left_type->base() != right_type->base()
+ && op != OPERATOR_LSHIFT
+ && op != OPERATOR_RSHIFT)
+ {
+ // May be a type error--let it be diagnosed elsewhere.
+ return false;
+ }
+
+ if (op == OPERATOR_LSHIFT || op == OPERATOR_RSHIFT)
+ {
+ if (left_type->integer_type() != NULL)
+ *result_type = left_type;
+ else
+ *result_type = Type::make_abstract_integer_type();
+ }
+ else if (!left_type->is_abstract() && left_type->named_type() != NULL)
+ *result_type = left_type;
+ else if (!right_type->is_abstract() && right_type->named_type() != NULL)
+ *result_type = right_type;
+ else if (!left_type->is_abstract())
+ *result_type = left_type;
+ else if (!right_type->is_abstract())
+ *result_type = right_type;
+ else if (left_type->complex_type() != NULL)
+ *result_type = left_type;
+ else if (right_type->complex_type() != NULL)
+ *result_type = right_type;
+ else if (left_type->float_type() != NULL)
+ *result_type = left_type;
+ else if (right_type->float_type() != NULL)
+ *result_type = right_type;
+ else if (left_type->integer_type() != NULL
+ && left_type->integer_type()->is_rune())
+ *result_type = left_type;
+ else if (right_type->integer_type() != NULL
+ && right_type->integer_type()->is_rune())
+ *result_type = right_type;
+ else
+ *result_type = left_type;
+
+ return true;
+}
+
+// Convert an integer comparison code and an operator to a boolean
+// value.
bool
-Binary_expression::compare_integer(Operator op, mpz_t left_val,
- mpz_t right_val)
+Binary_expression::cmp_to_bool(Operator op, int cmp)
{
- int i = mpz_cmp(left_val, right_val);
switch (op)
{
case OPERATOR_EQEQ:
- return i == 0;
+ return cmp == 0;
+ break;
case OPERATOR_NOTEQ:
- return i != 0;
+ return cmp != 0;
+ break;
case OPERATOR_LT:
- return i < 0;
+ return cmp < 0;
+ break;
case OPERATOR_LE:
- return i <= 0;
+ return cmp <= 0;
case OPERATOR_GT:
- return i > 0;
+ return cmp > 0;
case OPERATOR_GE:
- return i >= 0;
+ return cmp >= 0;
default:
- gcc_unreachable();
+ go_unreachable();
}
}
-// Compare floating point constants according to OP.
+// Compare constants according to OP.
bool
-Binary_expression::compare_float(Operator op, Type* type, mpfr_t left_val,
- mpfr_t right_val)
+Binary_expression::compare_constant(Operator op, Numeric_constant* left_nc,
+ Numeric_constant* right_nc,
+ Location location, bool* result)
{
- int i;
- if (type == NULL)
- i = mpfr_cmp(left_val, right_val);
+ Type* left_type = left_nc->type();
+ Type* right_type = right_nc->type();
+
+ Type* type;
+ if (!Binary_expression::operation_type(op, left_type, right_type, &type))
+ return false;
+
+ // When comparing an untyped operand to a typed operand, we are
+ // effectively coercing the untyped operand to the other operand's
+ // type, so make sure that is valid.
+ if (!left_nc->set_type(type, true, location)
+ || !right_nc->set_type(type, true, location))
+ return false;
+
+ bool ret;
+ int cmp;
+ if (type->complex_type() != NULL)
+ {
+ if (op != OPERATOR_EQEQ && op != OPERATOR_NOTEQ)
+ return false;
+ ret = Binary_expression::compare_complex(left_nc, right_nc, &cmp);
+ }
+ else if (type->float_type() != NULL)
+ ret = Binary_expression::compare_float(left_nc, right_nc, &cmp);
else
+ ret = Binary_expression::compare_integer(left_nc, right_nc, &cmp);
+
+ if (ret)
+ *result = Binary_expression::cmp_to_bool(op, cmp);
+
+ return ret;
+}
+
+// Compare integer constants.
+
+bool
+Binary_expression::compare_integer(const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ int* cmp)
+{
+ mpz_t left_val;
+ if (!left_nc->to_int(&left_val))
+ return false;
+ mpz_t right_val;
+ if (!right_nc->to_int(&right_val))
{
- mpfr_t lv;
- mpfr_init_set(lv, left_val, GMP_RNDN);
- mpfr_t rv;
- mpfr_init_set(rv, right_val, GMP_RNDN);
- Float_expression::constrain_float(lv, type);
- Float_expression::constrain_float(rv, type);
- i = mpfr_cmp(lv, rv);
- mpfr_clear(lv);
- mpfr_clear(rv);
+ mpz_clear(left_val);
+ return false;
}
- switch (op)
+
+ *cmp = mpz_cmp(left_val, right_val);
+
+ mpz_clear(left_val);
+ mpz_clear(right_val);
+
+ return true;
+}
+
+// Compare floating point constants.
+
+bool
+Binary_expression::compare_float(const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ int* cmp)
+{
+ mpfr_t left_val;
+ if (!left_nc->to_float(&left_val))
+ return false;
+ mpfr_t right_val;
+ if (!right_nc->to_float(&right_val))
{
- case OPERATOR_EQEQ:
- return i == 0;
- case OPERATOR_NOTEQ:
- return i != 0;
- case OPERATOR_LT:
- return i < 0;
- case OPERATOR_LE:
- return i <= 0;
- case OPERATOR_GT:
- return i > 0;
- case OPERATOR_GE:
- return i >= 0;
- default:
- gcc_unreachable();
+ mpfr_clear(left_val);
+ return false;
}
+
+ // We already coerced both operands to the same type. If that type
+ // is not an abstract type, we need to round the values accordingly.
+ Type* type = left_nc->type();
+ if (!type->is_abstract() && type->float_type() != NULL)
+ {
+ int bits = type->float_type()->bits();
+ mpfr_prec_round(left_val, bits, GMP_RNDN);
+ mpfr_prec_round(right_val, bits, GMP_RNDN);
+ }
+
+ *cmp = mpfr_cmp(left_val, right_val);
+
+ mpfr_clear(left_val);
+ mpfr_clear(right_val);
+
+ return true;
}
-// Compare complex constants according to OP. Complex numbers may
-// only be compared for equality.
+// Compare complex constants. Complex numbers may only be compared
+// for equality.
bool
-Binary_expression::compare_complex(Operator op, Type* type,
- mpfr_t left_real, mpfr_t left_imag,
- mpfr_t right_real, mpfr_t right_imag)
+Binary_expression::compare_complex(const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ int* cmp)
{
- bool is_equal;
- if (type == NULL)
- is_equal = (mpfr_cmp(left_real, right_real) == 0
- && mpfr_cmp(left_imag, right_imag) == 0);
- else
+ mpfr_t left_real, left_imag;
+ if (!left_nc->to_complex(&left_real, &left_imag))
+ return false;
+ mpfr_t right_real, right_imag;
+ if (!right_nc->to_complex(&right_real, &right_imag))
{
- mpfr_t lr;
- mpfr_t li;
- mpfr_init_set(lr, left_real, GMP_RNDN);
- mpfr_init_set(li, left_imag, GMP_RNDN);
- mpfr_t rr;
- mpfr_t ri;
- mpfr_init_set(rr, right_real, GMP_RNDN);
- mpfr_init_set(ri, right_imag, GMP_RNDN);
- Complex_expression::constrain_complex(lr, li, type);
- Complex_expression::constrain_complex(rr, ri, type);
- is_equal = mpfr_cmp(lr, rr) == 0 && mpfr_cmp(li, ri) == 0;
- mpfr_clear(lr);
- mpfr_clear(li);
- mpfr_clear(rr);
- mpfr_clear(ri);
+ mpfr_clear(left_real);
+ mpfr_clear(left_imag);
+ return false;
}
- switch (op)
+
+ // We already coerced both operands to the same type. If that type
+ // is not an abstract type, we need to round the values accordingly.
+ Type* type = left_nc->type();
+ if (!type->is_abstract() && type->complex_type() != NULL)
{
- case OPERATOR_EQEQ:
- return is_equal;
- case OPERATOR_NOTEQ:
- return !is_equal;
- default:
- gcc_unreachable();
+ int bits = type->complex_type()->bits();
+ mpfr_prec_round(left_real, bits / 2, GMP_RNDN);
+ mpfr_prec_round(left_imag, bits / 2, GMP_RNDN);
+ mpfr_prec_round(right_real, bits / 2, GMP_RNDN);
+ mpfr_prec_round(right_imag, bits / 2, GMP_RNDN);
}
+
+ *cmp = (mpfr_cmp(left_real, right_real) != 0
+ || mpfr_cmp(left_imag, right_imag) != 0);
+
+ mpfr_clear(left_real);
+ mpfr_clear(left_imag);
+ mpfr_clear(right_real);
+ mpfr_clear(right_imag);
+
+ return true;
}
-// Apply binary opcode OP to LEFT_VAL and RIGHT_VAL, setting VAL.
-// LEFT_TYPE is the type of LEFT_VAL, RIGHT_TYPE is the type of
-// RIGHT_VAL; LEFT_TYPE and/or RIGHT_TYPE may be NULL. Return true if
-// this could be done, false if not.
+// Apply binary opcode OP to LEFT_NC and RIGHT_NC, setting NC. Return
+// true if this could be done, false if not. Issue errors at LOCATION
+// as appropriate.
bool
-Binary_expression::eval_integer(Operator op, Type* left_type, mpz_t left_val,
- Type* right_type, mpz_t right_val,
- source_location location, mpz_t val)
+Binary_expression::eval_constant(Operator op, Numeric_constant* left_nc,
+ Numeric_constant* right_nc,
+ Location location, Numeric_constant* nc)
{
- bool is_shift_op = false;
switch (op)
{
case OPERATOR_OROR:
case OPERATOR_LE:
case OPERATOR_GT:
case OPERATOR_GE:
- // These return boolean values. We should probably handle them
- // anyhow in case a type conversion is used on the result.
+ // These return boolean values and as such must be handled
+ // elsewhere.
+ go_unreachable();
+ default:
+ break;
+ }
+
+ Type* left_type = left_nc->type();
+ Type* right_type = right_nc->type();
+
+ Type* type;
+ if (!Binary_expression::operation_type(op, left_type, right_type, &type))
+ return false;
+
+ bool is_shift = op == OPERATOR_LSHIFT || op == OPERATOR_RSHIFT;
+
+ // When combining an untyped operand with a typed operand, we are
+ // effectively coercing the untyped operand to the other operand's
+ // type, so make sure that is valid.
+ if (!left_nc->set_type(type, true, location))
+ return false;
+ if (!is_shift && !right_nc->set_type(type, true, location))
+ return false;
+
+ bool r;
+ if (type->complex_type() != NULL)
+ r = Binary_expression::eval_complex(op, left_nc, right_nc, location, nc);
+ else if (type->float_type() != NULL)
+ r = Binary_expression::eval_float(op, left_nc, right_nc, location, nc);
+ else
+ r = Binary_expression::eval_integer(op, left_nc, right_nc, location, nc);
+
+ if (r)
+ r = nc->set_type(type, true, location);
+
+ return r;
+}
+
+// Apply binary opcode OP to LEFT_NC and RIGHT_NC, setting NC, using
+// integer operations. Return true if this could be done, false if
+// not.
+
+bool
+Binary_expression::eval_integer(Operator op, const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ Location location, Numeric_constant* nc)
+{
+ mpz_t left_val;
+ if (!left_nc->to_int(&left_val))
+ return false;
+ mpz_t right_val;
+ if (!right_nc->to_int(&right_val))
+ {
+ mpz_clear(left_val);
return false;
+ }
+
+ mpz_t val;
+ mpz_init(val);
+
+ switch (op)
+ {
case OPERATOR_PLUS:
mpz_add(val, left_val, right_val);
break;
{
error_at(location, "division by zero");
mpz_set_ui(val, 0);
- return true;
}
break;
case OPERATOR_MOD:
{
error_at(location, "division by zero");
mpz_set_ui(val, 0);
- return true;
}
break;
case OPERATOR_LSHIFT:
{
unsigned long shift = mpz_get_ui(right_val);
- if (mpz_cmp_ui(right_val, shift) != 0 || shift > 0x100000)
+ if (mpz_cmp_ui(right_val, shift) == 0 && shift <= 0x100000)
+ mpz_mul_2exp(val, left_val, shift);
+ else
{
error_at(location, "shift count overflow");
mpz_set_ui(val, 0);
- return true;
}
- mpz_mul_2exp(val, left_val, shift);
- is_shift_op = true;
break;
}
break;
{
error_at(location, "shift count overflow");
mpz_set_ui(val, 0);
- return true;
}
- if (mpz_cmp_ui(left_val, 0) >= 0)
- mpz_tdiv_q_2exp(val, left_val, shift);
else
- mpz_fdiv_q_2exp(val, left_val, shift);
- is_shift_op = true;
+ {
+ if (mpz_cmp_ui(left_val, 0) >= 0)
+ mpz_tdiv_q_2exp(val, left_val, shift);
+ else
+ mpz_fdiv_q_2exp(val, left_val, shift);
+ }
break;
}
break;
}
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
- Type* type = left_type;
- if (!is_shift_op)
- {
- if (type == NULL)
- type = right_type;
- else if (type != right_type && right_type != NULL)
- {
- if (type->is_abstract())
- type = right_type;
- else if (!right_type->is_abstract())
- {
- // This look like a type error which should be diagnosed
- // elsewhere. Don't do anything here, to avoid an
- // unhelpful chain of error messages.
- return true;
- }
- }
- }
+ mpz_clear(left_val);
+ mpz_clear(right_val);
- if (type != NULL && !type->is_abstract())
- {
- // We have to check the operands too, as we have implicitly
- // coerced them to TYPE.
- if ((type != left_type
- && !Integer_expression::check_constant(left_val, type, location))
- || (!is_shift_op
- && type != right_type
- && !Integer_expression::check_constant(right_val, type,
- location))
- || !Integer_expression::check_constant(val, type, location))
- mpz_set_ui(val, 0);
- }
+ if (left_nc->is_rune()
+ || (op != OPERATOR_LSHIFT
+ && op != OPERATOR_RSHIFT
+ && right_nc->is_rune()))
+ nc->set_rune(NULL, val);
+ else
+ nc->set_int(NULL, val);
+
+ mpz_clear(val);
return true;
}
-// Apply binary opcode OP to LEFT_VAL and RIGHT_VAL, setting VAL.
-// Return true if this could be done, false if not.
+// Apply binary opcode OP to LEFT_NC and RIGHT_NC, setting NC, using
+// floating point operations. Return true if this could be done,
+// false if not.
bool
-Binary_expression::eval_float(Operator op, Type* left_type, mpfr_t left_val,
- Type* right_type, mpfr_t right_val,
- mpfr_t val, source_location location)
+Binary_expression::eval_float(Operator op, const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ Location location, Numeric_constant* nc)
{
- switch (op)
+ mpfr_t left_val;
+ if (!left_nc->to_float(&left_val))
+ return false;
+ mpfr_t right_val;
+ if (!right_nc->to_float(&right_val))
{
- case OPERATOR_OROR:
- case OPERATOR_ANDAND:
- case OPERATOR_EQEQ:
- case OPERATOR_NOTEQ:
- case OPERATOR_LT:
- case OPERATOR_LE:
- case OPERATOR_GT:
- case OPERATOR_GE:
- // These return boolean values. We should probably handle them
- // anyhow in case a type conversion is used on the result.
+ mpfr_clear(left_val);
return false;
+ }
+
+ mpfr_t val;
+ mpfr_init(val);
+
+ bool ret = true;
+ switch (op)
+ {
case OPERATOR_PLUS:
mpfr_add(val, left_val, right_val, GMP_RNDN);
break;
case OPERATOR_XOR:
case OPERATOR_AND:
case OPERATOR_BITCLEAR:
- return false;
+ case OPERATOR_MOD:
+ case OPERATOR_LSHIFT:
+ case OPERATOR_RSHIFT:
+ mpfr_set_ui(val, 0, GMP_RNDN);
+ ret = false;
+ break;
case OPERATOR_MULT:
mpfr_mul(val, left_val, right_val, GMP_RNDN);
break;
case OPERATOR_DIV:
- if (mpfr_zero_p(right_val))
- error_at(location, "division by zero");
- mpfr_div(val, left_val, right_val, GMP_RNDN);
+ if (!mpfr_zero_p(right_val))
+ mpfr_div(val, left_val, right_val, GMP_RNDN);
+ else
+ {
+ error_at(location, "division by zero");
+ mpfr_set_ui(val, 0, GMP_RNDN);
+ }
break;
- case OPERATOR_MOD:
- return false;
- case OPERATOR_LSHIFT:
- case OPERATOR_RSHIFT:
- return false;
default:
- gcc_unreachable();
+ go_unreachable();
}
- Type* type = left_type;
- if (type == NULL)
- type = right_type;
- else if (type != right_type && right_type != NULL)
- {
- if (type->is_abstract())
- type = right_type;
- else if (!right_type->is_abstract())
- {
- // This looks like a type error which should be diagnosed
- // elsewhere. Don't do anything here, to avoid an unhelpful
- // chain of error messages.
- return true;
- }
- }
+ mpfr_clear(left_val);
+ mpfr_clear(right_val);
- if (type != NULL && !type->is_abstract())
- {
- if ((type != left_type
- && !Float_expression::check_constant(left_val, type, location))
- || (type != right_type
- && !Float_expression::check_constant(right_val, type,
- location))
- || !Float_expression::check_constant(val, type, location))
- mpfr_set_ui(val, 0, GMP_RNDN);
- }
+ nc->set_float(NULL, val);
+ mpfr_clear(val);
- return true;
+ return ret;
}
-// Apply binary opcode OP to LEFT_REAL/LEFT_IMAG and
-// RIGHT_REAL/RIGHT_IMAG, setting REAL/IMAG. Return true if this
-// could be done, false if not.
+// Apply binary opcode OP to LEFT_NC and RIGHT_NC, setting NC, using
+// complex operations. Return true if this could be done, false if
+// not.
bool
-Binary_expression::eval_complex(Operator op, Type* left_type,
- mpfr_t left_real, mpfr_t left_imag,
- Type *right_type,
- mpfr_t right_real, mpfr_t right_imag,
- mpfr_t real, mpfr_t imag,
- source_location location)
+Binary_expression::eval_complex(Operator op, const Numeric_constant* left_nc,
+ const Numeric_constant* right_nc,
+ Location location, Numeric_constant* nc)
{
- switch (op)
+ mpfr_t left_real, left_imag;
+ if (!left_nc->to_complex(&left_real, &left_imag))
+ return false;
+ mpfr_t right_real, right_imag;
+ if (!right_nc->to_complex(&right_real, &right_imag))
{
- case OPERATOR_OROR:
- case OPERATOR_ANDAND:
- case OPERATOR_EQEQ:
- case OPERATOR_NOTEQ:
- case OPERATOR_LT:
- case OPERATOR_LE:
- case OPERATOR_GT:
- case OPERATOR_GE:
- // These return boolean values and must be handled differently.
+ mpfr_clear(left_real);
+ mpfr_clear(left_imag);
return false;
+ }
+
+ mpfr_t real, imag;
+ mpfr_init(real);
+ mpfr_init(imag);
+
+ bool ret = true;
+ switch (op)
+ {
case OPERATOR_PLUS:
mpfr_add(real, left_real, right_real, GMP_RNDN);
mpfr_add(imag, left_imag, right_imag, GMP_RNDN);
case OPERATOR_XOR:
case OPERATOR_AND:
case OPERATOR_BITCLEAR:
- return false;
+ case OPERATOR_MOD:
+ case OPERATOR_LSHIFT:
+ case OPERATOR_RSHIFT:
+ mpfr_set_ui(real, 0, GMP_RNDN);
+ mpfr_set_ui(imag, 0, GMP_RNDN);
+ ret = false;
+ break;
case OPERATOR_MULT:
{
// You might think that multiplying two complex numbers would
// scale the values to try to avoid this.
if (mpfr_zero_p(right_real) && mpfr_zero_p(right_imag))
- error_at(location, "division by zero");
+ {
+ error_at(location, "division by zero");
+ mpfr_set_ui(real, 0, GMP_RNDN);
+ mpfr_set_ui(imag, 0, GMP_RNDN);
+ break;
+ }
mpfr_t rra;
mpfr_t ria;
mpfr_clear(ria);
}
break;
- case OPERATOR_MOD:
- return false;
- case OPERATOR_LSHIFT:
- case OPERATOR_RSHIFT:
- return false;
default:
- gcc_unreachable();
+ go_unreachable();
}
- Type* type = left_type;
- if (type == NULL)
- type = right_type;
- else if (type != right_type && right_type != NULL)
- {
- if (type->is_abstract())
- type = right_type;
- else if (!right_type->is_abstract())
- {
- // This looks like a type error which should be diagnosed
- // elsewhere. Don't do anything here, to avoid an unhelpful
- // chain of error messages.
- return true;
- }
- }
+ mpfr_clear(left_real);
+ mpfr_clear(left_imag);
+ mpfr_clear(right_real);
+ mpfr_clear(right_imag);
- if (type != NULL && !type->is_abstract())
- {
- if ((type != left_type
- && !Complex_expression::check_constant(left_real, left_imag,
- type, location))
- || (type != right_type
- && !Complex_expression::check_constant(right_real, right_imag,
- type, location))
- || !Complex_expression::check_constant(real, imag, type,
- location))
- {
- mpfr_set_ui(real, 0, GMP_RNDN);
- mpfr_set_ui(imag, 0, GMP_RNDN);
- }
- }
+ nc->set_complex(NULL, real, imag);
+ mpfr_clear(real);
+ mpfr_clear(imag);
- return true;
+ return ret;
}
// Lower a binary expression. We have to evaluate constant
// constants.
Expression*
-Binary_expression::do_lower(Gogo*, Named_object*, int)
+Binary_expression::do_lower(Gogo* gogo, Named_object*,
+ Statement_inserter* inserter, int)
{
- source_location location = this->location();
+ Location location = this->location();
Operator op = this->op_;
Expression* left = this->left_;
Expression* right = this->right_;
|| op == OPERATOR_GT
|| op == OPERATOR_GE);
- // Integer constant expressions.
- {
- mpz_t left_val;
- mpz_init(left_val);
- Type* left_type;
- mpz_t right_val;
- mpz_init(right_val);
- Type* right_type;
- if (left->integer_constant_value(false, left_val, &left_type)
- && right->integer_constant_value(false, right_val, &right_type))
- {
- Expression* ret = NULL;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base()
- && op != OPERATOR_LSHIFT
- && op != OPERATOR_RSHIFT)
- {
- // May be a type error--let it be diagnosed later.
- }
- else if (is_comparison)
- {
- bool b = Binary_expression::compare_integer(op, left_val,
- right_val);
- ret = Expression::make_cast(Type::lookup_bool_type(),
- Expression::make_boolean(b, location),
- location);
- }
- else
- {
- mpz_t val;
- mpz_init(val);
-
- if (Binary_expression::eval_integer(op, left_type, left_val,
- right_type, right_val,
- location, val))
- {
- gcc_assert(op != OPERATOR_OROR && op != OPERATOR_ANDAND);
- Type* type;
- if (op == OPERATOR_LSHIFT || op == OPERATOR_RSHIFT)
- type = left_type;
- else if (left_type == NULL)
- type = right_type;
- else if (right_type == NULL)
- type = left_type;
- else if (!left_type->is_abstract()
- && left_type->named_type() != NULL)
- type = left_type;
- else if (!right_type->is_abstract()
- && right_type->named_type() != NULL)
- type = right_type;
- else if (!left_type->is_abstract())
- type = left_type;
- else if (!right_type->is_abstract())
- type = right_type;
- else if (left_type->float_type() != NULL)
- type = left_type;
- else if (right_type->float_type() != NULL)
- type = right_type;
- else if (left_type->complex_type() != NULL)
- type = left_type;
- else if (right_type->complex_type() != NULL)
- type = right_type;
- else
- type = left_type;
- ret = Expression::make_integer(&val, type, location);
- }
-
- mpz_clear(val);
- }
-
- if (ret != NULL)
- {
- mpz_clear(right_val);
- mpz_clear(left_val);
- return ret;
- }
- }
- mpz_clear(right_val);
- mpz_clear(left_val);
- }
-
- // Floating point constant expressions.
- {
- mpfr_t left_val;
- mpfr_init(left_val);
- Type* left_type;
- mpfr_t right_val;
- mpfr_init(right_val);
- Type* right_type;
- if (left->float_constant_value(left_val, &left_type)
- && right->float_constant_value(right_val, &right_type))
- {
- Expression* ret = NULL;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base()
- && op != OPERATOR_LSHIFT
- && op != OPERATOR_RSHIFT)
- {
- // May be a type error--let it be diagnosed later.
- }
- else if (is_comparison)
- {
- bool b = Binary_expression::compare_float(op,
- (left_type != NULL
- ? left_type
- : right_type),
- left_val, right_val);
- ret = Expression::make_boolean(b, location);
- }
- else
- {
- mpfr_t val;
- mpfr_init(val);
-
- if (Binary_expression::eval_float(op, left_type, left_val,
- right_type, right_val, val,
- location))
- {
- gcc_assert(op != OPERATOR_OROR && op != OPERATOR_ANDAND
- && op != OPERATOR_LSHIFT && op != OPERATOR_RSHIFT);
- Type* type;
- if (left_type == NULL)
- type = right_type;
- else if (right_type == NULL)
- type = left_type;
- else if (!left_type->is_abstract()
- && left_type->named_type() != NULL)
- type = left_type;
- else if (!right_type->is_abstract()
- && right_type->named_type() != NULL)
- type = right_type;
- else if (!left_type->is_abstract())
- type = left_type;
- else if (!right_type->is_abstract())
- type = right_type;
- else if (left_type->float_type() != NULL)
- type = left_type;
- else if (right_type->float_type() != NULL)
- type = right_type;
- else
- type = left_type;
- ret = Expression::make_float(&val, type, location);
- }
-
- mpfr_clear(val);
- }
-
- if (ret != NULL)
- {
- mpfr_clear(right_val);
- mpfr_clear(left_val);
- return ret;
- }
- }
- mpfr_clear(right_val);
- mpfr_clear(left_val);
- }
-
- // Complex constant expressions.
+ // Numeric constant expressions.
{
- mpfr_t left_real;
- mpfr_t left_imag;
- mpfr_init(left_real);
- mpfr_init(left_imag);
- Type* left_type;
-
- mpfr_t right_real;
- mpfr_t right_imag;
- mpfr_init(right_real);
- mpfr_init(right_imag);
- Type* right_type;
-
- if (left->complex_constant_value(left_real, left_imag, &left_type)
- && right->complex_constant_value(right_real, right_imag, &right_type))
+ Numeric_constant left_nc;
+ Numeric_constant right_nc;
+ if (left->numeric_constant_value(&left_nc)
+ && right->numeric_constant_value(&right_nc))
{
- Expression* ret = NULL;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base())
- {
- // May be a type error--let it be diagnosed later.
- }
- else if (op == OPERATOR_EQEQ || op == OPERATOR_NOTEQ)
+ if (is_comparison)
{
- bool b = Binary_expression::compare_complex(op,
- (left_type != NULL
- ? left_type
- : right_type),
- left_real,
- left_imag,
- right_real,
- right_imag);
- ret = Expression::make_boolean(b, location);
+ bool result;
+ if (!Binary_expression::compare_constant(op, &left_nc,
+ &right_nc, location,
+ &result))
+ return this;
+ return Expression::make_cast(Type::lookup_bool_type(),
+ Expression::make_boolean(result,
+ location),
+ location);
}
else
{
- mpfr_t real;
- mpfr_t imag;
- mpfr_init(real);
- mpfr_init(imag);
-
- if (Binary_expression::eval_complex(op, left_type,
- left_real, left_imag,
- right_type,
- right_real, right_imag,
- real, imag,
- location))
- {
- gcc_assert(op != OPERATOR_OROR && op != OPERATOR_ANDAND
- && op != OPERATOR_LSHIFT && op != OPERATOR_RSHIFT);
- Type* type;
- if (left_type == NULL)
- type = right_type;
- else if (right_type == NULL)
- type = left_type;
- else if (!left_type->is_abstract()
- && left_type->named_type() != NULL)
- type = left_type;
- else if (!right_type->is_abstract()
- && right_type->named_type() != NULL)
- type = right_type;
- else if (!left_type->is_abstract())
- type = left_type;
- else if (!right_type->is_abstract())
- type = right_type;
- else if (left_type->complex_type() != NULL)
- type = left_type;
- else if (right_type->complex_type() != NULL)
- type = right_type;
- else
- type = left_type;
- ret = Expression::make_complex(&real, &imag, type,
- location);
- }
- mpfr_clear(real);
- mpfr_clear(imag);
- }
-
- if (ret != NULL)
- {
- mpfr_clear(left_real);
- mpfr_clear(left_imag);
- mpfr_clear(right_real);
- mpfr_clear(right_imag);
- return ret;
+ Numeric_constant nc;
+ if (!Binary_expression::eval_constant(op, &left_nc, &right_nc,
+ location, &nc))
+ return this;
+ return nc.expression(location);
}
}
-
- mpfr_clear(left_real);
- mpfr_clear(left_imag);
- mpfr_clear(right_real);
- mpfr_clear(right_imag);
}
// String constant expressions.
- if (op == OPERATOR_PLUS
- && left->type()->is_string_type()
- && right->type()->is_string_type())
+ if (left->type()->is_string_type() && right->type()->is_string_type())
{
std::string left_string;
std::string right_string;
if (left->string_constant_value(&left_string)
&& right->string_constant_value(&right_string))
- return Expression::make_string(left_string + right_string, location);
+ {
+ if (op == OPERATOR_PLUS)
+ return Expression::make_string(left_string + right_string,
+ location);
+ else if (is_comparison)
+ {
+ int cmp = left_string.compare(right_string);
+ bool r = Binary_expression::cmp_to_bool(op, cmp);
+ return Expression::make_cast(Type::lookup_bool_type(),
+ Expression::make_boolean(r,
+ location),
+ location);
+ }
+ }
+ }
+
+ // Lower struct and array comparisons.
+ if (op == OPERATOR_EQEQ || op == OPERATOR_NOTEQ)
+ {
+ if (left->type()->struct_type() != NULL)
+ return this->lower_struct_comparison(gogo, inserter);
+ else if (left->type()->array_type() != NULL
+ && !left->type()->is_slice_type())
+ return this->lower_array_comparison(gogo, inserter);
}
return this;
}
-// Return the integer constant value, if it has one.
+// Lower a struct comparison.
-bool
-Binary_expression::do_integer_constant_value(bool iota_is_constant, mpz_t val,
- Type** ptype) const
+Expression*
+Binary_expression::lower_struct_comparison(Gogo* gogo,
+ Statement_inserter* inserter)
{
- mpz_t left_val;
- mpz_init(left_val);
- Type* left_type;
- if (!this->left_->integer_constant_value(iota_is_constant, left_val,
- &left_type))
+ Struct_type* st = this->left_->type()->struct_type();
+ Struct_type* st2 = this->right_->type()->struct_type();
+ if (st2 == NULL)
+ return this;
+ if (st != st2 && !Type::are_identical(st, st2, false, NULL))
+ return this;
+ if (!Type::are_compatible_for_comparison(true, this->left_->type(),
+ this->right_->type(), NULL))
+ return this;
+
+ // See if we can compare using memcmp. As a heuristic, we use
+ // memcmp rather than field references and comparisons if there are
+ // more than two fields.
+ if (st->compare_is_identity(gogo) && st->total_field_count() > 2)
+ return this->lower_compare_to_memcmp(gogo, inserter);
+
+ Location loc = this->location();
+
+ Expression* left = this->left_;
+ Temporary_statement* left_temp = NULL;
+ if (left->var_expression() == NULL
+ && left->temporary_reference_expression() == NULL)
{
- mpz_clear(left_val);
- return false;
+ left_temp = Statement::make_temporary(left->type(), NULL, loc);
+ inserter->insert(left_temp);
+ left = Expression::make_set_and_use_temporary(left_temp, left, loc);
}
- mpz_t right_val;
- mpz_init(right_val);
- Type* right_type;
- if (!this->right_->integer_constant_value(iota_is_constant, right_val,
- &right_type))
+ Expression* right = this->right_;
+ Temporary_statement* right_temp = NULL;
+ if (right->var_expression() == NULL
+ && right->temporary_reference_expression() == NULL)
{
- mpz_clear(right_val);
- mpz_clear(left_val);
- return false;
+ right_temp = Statement::make_temporary(right->type(), NULL, loc);
+ inserter->insert(right_temp);
+ right = Expression::make_set_and_use_temporary(right_temp, right, loc);
}
- bool ret;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base()
- && this->op_ != OPERATOR_RSHIFT
- && this->op_ != OPERATOR_LSHIFT)
- ret = false;
- else
- ret = Binary_expression::eval_integer(this->op_, left_type, left_val,
- right_type, right_val,
- this->location(), val);
-
- mpz_clear(right_val);
- mpz_clear(left_val);
+ Expression* ret = Expression::make_boolean(true, loc);
+ const Struct_field_list* fields = st->fields();
+ unsigned int field_index = 0;
+ for (Struct_field_list::const_iterator pf = fields->begin();
+ pf != fields->end();
+ ++pf, ++field_index)
+ {
+ if (field_index > 0)
+ {
+ if (left_temp == NULL)
+ left = left->copy();
+ else
+ left = Expression::make_temporary_reference(left_temp, loc);
+ if (right_temp == NULL)
+ right = right->copy();
+ else
+ right = Expression::make_temporary_reference(right_temp, loc);
+ }
+ Expression* f1 = Expression::make_field_reference(left, field_index,
+ loc);
+ Expression* f2 = Expression::make_field_reference(right, field_index,
+ loc);
+ Expression* cond = Expression::make_binary(OPERATOR_EQEQ, f1, f2, loc);
+ ret = Expression::make_binary(OPERATOR_ANDAND, ret, cond, loc);
+ }
- if (ret)
- *ptype = left_type;
+ if (this->op_ == OPERATOR_NOTEQ)
+ ret = Expression::make_unary(OPERATOR_NOT, ret, loc);
return ret;
}
-// Return the floating point constant value, if it has one.
+// Lower an array comparison.
-bool
-Binary_expression::do_float_constant_value(mpfr_t val, Type** ptype) const
+Expression*
+Binary_expression::lower_array_comparison(Gogo* gogo,
+ Statement_inserter* inserter)
{
- mpfr_t left_val;
- mpfr_init(left_val);
- Type* left_type;
- if (!this->left_->float_constant_value(left_val, &left_type))
- {
- mpfr_clear(left_val);
- return false;
- }
+ Array_type* at = this->left_->type()->array_type();
+ Array_type* at2 = this->right_->type()->array_type();
+ if (at2 == NULL)
+ return this;
+ if (at != at2 && !Type::are_identical(at, at2, false, NULL))
+ return this;
+ if (!Type::are_compatible_for_comparison(true, this->left_->type(),
+ this->right_->type(), NULL))
+ return this;
- mpfr_t right_val;
- mpfr_init(right_val);
- Type* right_type;
- if (!this->right_->float_constant_value(right_val, &right_type))
- {
- mpfr_clear(right_val);
- mpfr_clear(left_val);
- return false;
- }
+ // Call memcmp directly if possible. This may let the middle-end
+ // optimize the call.
+ if (at->compare_is_identity(gogo))
+ return this->lower_compare_to_memcmp(gogo, inserter);
- bool ret;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base())
- ret = false;
- else
- ret = Binary_expression::eval_float(this->op_, left_type, left_val,
- right_type, right_val,
- val, this->location());
+ // Call the array comparison function.
+ Named_object* hash_fn;
+ Named_object* equal_fn;
+ at->type_functions(gogo, this->left_->type()->named_type(), NULL, NULL,
+ &hash_fn, &equal_fn);
- mpfr_clear(left_val);
- mpfr_clear(right_val);
+ Location loc = this->location();
- if (ret)
- *ptype = left_type;
+ Expression* func = Expression::make_func_reference(equal_fn, NULL, loc);
+
+ Expression_list* args = new Expression_list();
+ args->push_back(this->operand_address(inserter, this->left_));
+ args->push_back(this->operand_address(inserter, this->right_));
+ args->push_back(Expression::make_type_info(at, TYPE_INFO_SIZE));
+
+ Expression* ret = Expression::make_call(func, args, false, loc);
+
+ if (this->op_ == OPERATOR_NOTEQ)
+ ret = Expression::make_unary(OPERATOR_NOT, ret, loc);
return ret;
}
-// Return the complex constant value, if it has one.
+// Lower a struct or array comparison to a call to memcmp.
-bool
-Binary_expression::do_complex_constant_value(mpfr_t real, mpfr_t imag,
- Type** ptype) const
+Expression*
+Binary_expression::lower_compare_to_memcmp(Gogo*, Statement_inserter* inserter)
{
- mpfr_t left_real;
- mpfr_t left_imag;
- mpfr_init(left_real);
- mpfr_init(left_imag);
- Type* left_type;
- if (!this->left_->complex_constant_value(left_real, left_imag, &left_type))
- {
- mpfr_clear(left_real);
- mpfr_clear(left_imag);
- return false;
- }
+ Location loc = this->location();
+
+ Expression* a1 = this->operand_address(inserter, this->left_);
+ Expression* a2 = this->operand_address(inserter, this->right_);
+ Expression* len = Expression::make_type_info(this->left_->type(),
+ TYPE_INFO_SIZE);
+
+ Expression* call = Runtime::make_call(Runtime::MEMCMP, loc, 3, a1, a2, len);
+
+ mpz_t zval;
+ mpz_init_set_ui(zval, 0);
+ Expression* zero = Expression::make_integer(&zval, NULL, loc);
+ mpz_clear(zval);
+
+ return Expression::make_binary(this->op_, call, zero, loc);
+}
+
+// Return the address of EXPR, cast to unsafe.Pointer.
+
+Expression*
+Binary_expression::operand_address(Statement_inserter* inserter,
+ Expression* expr)
+{
+ Location loc = this->location();
- mpfr_t right_real;
- mpfr_t right_imag;
- mpfr_init(right_real);
- mpfr_init(right_imag);
- Type* right_type;
- if (!this->right_->complex_constant_value(right_real, right_imag,
- &right_type))
+ if (!expr->is_addressable())
{
- mpfr_clear(left_real);
- mpfr_clear(left_imag);
- mpfr_clear(right_real);
- mpfr_clear(right_imag);
- return false;
+ Temporary_statement* temp = Statement::make_temporary(expr->type(), NULL,
+ loc);
+ inserter->insert(temp);
+ expr = Expression::make_set_and_use_temporary(temp, expr, loc);
}
+ expr = Expression::make_unary(OPERATOR_AND, expr, loc);
+ static_cast<Unary_expression*>(expr)->set_does_not_escape();
+ Type* void_type = Type::make_void_type();
+ Type* unsafe_pointer_type = Type::make_pointer_type(void_type);
+ return Expression::make_cast(unsafe_pointer_type, expr, loc);
+}
- bool ret;
- if (left_type != right_type
- && left_type != NULL
- && right_type != NULL
- && left_type->base() != right_type->base())
- ret = false;
- else
- ret = Binary_expression::eval_complex(this->op_, left_type,
- left_real, left_imag,
- right_type,
- right_real, right_imag,
- real, imag,
- this->location());
- mpfr_clear(left_real);
- mpfr_clear(left_imag);
- mpfr_clear(right_real);
- mpfr_clear(right_imag);
+// Return the numeric constant value, if it has one.
- if (ret)
- *ptype = left_type;
+bool
+Binary_expression::do_numeric_constant_value(Numeric_constant* nc) const
+{
+ Operator op = this->op_;
- return ret;
+ if (op == OPERATOR_EQEQ
+ || op == OPERATOR_NOTEQ
+ || op == OPERATOR_LT
+ || op == OPERATOR_LE
+ || op == OPERATOR_GT
+ || op == OPERATOR_GE)
+ return false;
+
+ Numeric_constant left_nc;
+ if (!this->left_->numeric_constant_value(&left_nc))
+ return false;
+ Numeric_constant right_nc;
+ if (!this->right_->numeric_constant_value(&right_nc))
+ return false;
+
+ return Binary_expression::eval_constant(op, &left_nc, &right_nc,
+ this->location(), nc);
}
// Note that the value is being discarded.
if (this->op_ == OPERATOR_OROR || this->op_ == OPERATOR_ANDAND)
this->right_->discarding_value();
else
- this->warn_about_unused_value();
+ this->unused_value_error();
}
// Get type.
case OPERATOR_AND:
case OPERATOR_BITCLEAR:
{
- Type* left_type = this->left_->type();
- Type* right_type = this->right_->type();
- if (left_type->is_error())
- return left_type;
- else if (right_type->is_error())
- return right_type;
- else if (!Type::are_compatible_for_binop(left_type, right_type))
- {
- this->report_error(_("incompatible types in binary expression"));
- return Type::make_error_type();
- }
- else if (!left_type->is_abstract() && left_type->named_type() != NULL)
- return left_type;
- else if (!right_type->is_abstract() && right_type->named_type() != NULL)
- return right_type;
- else if (!left_type->is_abstract())
- return left_type;
- else if (!right_type->is_abstract())
- return right_type;
- else if (left_type->complex_type() != NULL)
- return left_type;
- else if (right_type->complex_type() != NULL)
- return right_type;
- else if (left_type->float_type() != NULL)
- return left_type;
- else if (right_type->float_type() != NULL)
- return right_type;
- else
- return left_type;
+ Type* type;
+ if (!Binary_expression::operation_type(this->op_,
+ this->left_->type(),
+ this->right_->type(),
+ &type))
+ return Type::make_error_type();
+ return type;
}
case OPERATOR_LSHIFT:
return this->left_->type();
default:
- gcc_unreachable();
+ go_unreachable();
}
}
// Set the context for the left hand operand.
if (is_shift_op)
{
- // The right hand operand plays no role in determining the type
- // of the left hand operand. A shift of an abstract integer in
- // a string context gets special treatment, which may be a
- // language bug.
- if (subcontext.type != NULL
- && subcontext.type->is_string_type()
- && tleft->is_abstract())
- error_at(this->location(), "shift of non-integer operand");
+ // The right hand operand of a shift plays no role in
+ // determining the type of the left hand operand.
}
else if (!tleft->is_abstract())
subcontext.type = tleft;
this->left_->determine_type(&subcontext);
- // The context for the right hand operand is the same as for the
- // left hand operand, except for a shift operator.
if (is_shift_op)
{
+ // We may have inherited an unusable type for the shift operand.
+ // Give a useful error if that happened.
+ if (tleft->is_abstract()
+ && subcontext.type != NULL
+ && (this->left_->type()->integer_type() == NULL
+ || (subcontext.type->integer_type() == NULL
+ && subcontext.type->float_type() == NULL
+ && subcontext.type->complex_type() == NULL)))
+ this->report_error(("invalid context-determined non-integer type "
+ "for shift operand"));
+
+ // The context for the right hand operand is the same as for the
+ // left hand operand, except for a shift operator.
subcontext.type = Type::lookup_integer_type("uint");
subcontext.may_be_abstract = false;
}
}
// Report an error if the binary operator OP does not support TYPE.
-// Return whether the operation is OK. This should not be used for
-// shift.
+// OTYPE is the type of the other operand. Return whether the
+// operation is OK. This should not be used for shift.
bool
-Binary_expression::check_operator_type(Operator op, Type* type,
- source_location location)
+Binary_expression::check_operator_type(Operator op, Type* type, Type* otype,
+ Location location)
{
switch (op)
{
case OPERATOR_EQEQ:
case OPERATOR_NOTEQ:
- if (type->integer_type() == NULL
- && type->float_type() == NULL
- && type->complex_type() == NULL
- && !type->is_string_type()
- && type->points_to() == NULL
- && !type->is_nil_type()
- && !type->is_boolean_type()
- && type->interface_type() == NULL
- && (type->array_type() == NULL
- || type->array_type()->length() != NULL)
- && type->map_type() == NULL
- && type->channel_type() == NULL
- && type->function_type() == NULL)
- {
- error_at(location,
- ("expected integer, floating, complex, string, pointer, "
- "boolean, interface, slice, map, channel, "
- "or function type"));
- return false;
- }
+ {
+ std::string reason;
+ if (!Type::are_compatible_for_comparison(true, type, otype, &reason))
+ {
+ error_at(location, "%s", reason.c_str());
+ return false;
+ }
+ }
break;
case OPERATOR_LT:
case OPERATOR_LE:
case OPERATOR_GT:
case OPERATOR_GE:
- if (type->integer_type() == NULL
- && type->float_type() == NULL
- && !type->is_string_type())
- {
- error_at(location, "expected integer, floating, or string type");
- return false;
- }
+ {
+ std::string reason;
+ if (!Type::are_compatible_for_comparison(false, type, otype, &reason))
+ {
+ error_at(location, "%s", reason.c_str());
+ return false;
+ }
+ }
break;
case OPERATOR_PLUS:
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
return true;
return;
}
if (!Binary_expression::check_operator_type(this->op_, left_type,
+ right_type,
this->location())
|| !Binary_expression::check_operator_type(this->op_, right_type,
+ left_type,
this->location()))
{
this->set_is_error();
return;
}
if (!Binary_expression::check_operator_type(this->op_, left_type,
+ right_type,
this->location()))
{
this->set_is_error();
this->report_error(_("shift count not unsigned integer"));
else
{
- mpz_t val;
- mpz_init(val);
- Type* type;
- if (this->right_->integer_constant_value(true, val, &type))
+ Numeric_constant nc;
+ if (this->right_->numeric_constant_value(&nc))
{
- if (mpz_sgn(val) < 0)
+ mpz_t val;
+ if (!nc.to_int(&val))
+ this->report_error(_("shift count not unsigned integer"));
+ else
{
- this->report_error(_("negative shift count"));
- mpz_set_ui(val, 0);
- source_location rloc = this->right_->location();
- this->right_ = Expression::make_integer(&val, right_type,
- rloc);
+ if (mpz_sgn(val) < 0)
+ {
+ this->report_error(_("negative shift count"));
+ mpz_set_ui(val, 0);
+ Location rloc = this->right_->location();
+ this->right_ = Expression::make_integer(&val, right_type,
+ rloc);
+ }
+ mpz_clear(val);
}
}
- mpz_clear(val);
}
}
}
code = BIT_AND_EXPR;
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
tree type = use_left_type ? TREE_TYPE(left) : TREE_TYPE(right);
if (this->left_->type()->is_string_type())
{
- gcc_assert(this->op_ == OPERATOR_PLUS);
- tree string_type = Type::make_string_type()->get_tree(context->gogo());
+ go_assert(this->op_ == OPERATOR_PLUS);
+ Type* st = Type::make_string_type();
+ tree string_type = type_to_tree(st->get_backend(context->gogo()));
static tree string_plus_decl;
return Gogo::call_builtin(&string_plus_decl,
this->location(),
if (eval_saved == NULL_TREE)
eval_saved = right;
else
- eval_saved = fold_build2_loc(this->location(), COMPOUND_EXPR,
+ eval_saved = fold_build2_loc(this->location().gcc_location(),
+ COMPOUND_EXPR,
void_type_node, eval_saved, right);
}
}
- tree ret = fold_build2_loc(this->location(),
+ tree ret = fold_build2_loc(this->location().gcc_location(),
code,
compute_type != NULL_TREE ? compute_type : type,
left, right);
// This is not true in GENERIC, so we need to insert a conditional.
if (is_shift_op)
{
- gcc_assert(INTEGRAL_TYPE_P(TREE_TYPE(left)));
- gcc_assert(this->left_->type()->integer_type() != NULL);
+ go_assert(INTEGRAL_TYPE_P(TREE_TYPE(left)));
+ go_assert(this->left_->type()->integer_type() != NULL);
int bits = TYPE_PRECISION(TREE_TYPE(left));
tree compare = fold_build2(LT_EXPR, boolean_type_node, right,
build_int_cst_type(TREE_TYPE(right), bits));
- tree overflow_result = fold_convert_loc(this->location(),
+ tree overflow_result = fold_convert_loc(this->location().gcc_location(),
TREE_TYPE(left),
integer_zero_node);
if (this->op_ == OPERATOR_RSHIFT
&& !this->left_->type()->integer_type()->is_unsigned())
{
- tree neg = fold_build2_loc(this->location(), LT_EXPR,
- boolean_type_node, left,
- fold_convert_loc(this->location(),
- TREE_TYPE(left),
- integer_zero_node));
- tree neg_one = fold_build2_loc(this->location(),
- MINUS_EXPR, TREE_TYPE(left),
- fold_convert_loc(this->location(),
- TREE_TYPE(left),
- integer_zero_node),
- fold_convert_loc(this->location(),
- TREE_TYPE(left),
- integer_one_node));
- overflow_result = fold_build3_loc(this->location(), COND_EXPR,
- TREE_TYPE(left), neg, neg_one,
- overflow_result);
- }
-
- ret = fold_build3_loc(this->location(), COND_EXPR, TREE_TYPE(left),
- compare, ret, overflow_result);
+ tree neg =
+ fold_build2_loc(this->location().gcc_location(), LT_EXPR,
+ boolean_type_node, left,
+ fold_convert_loc(this->location().gcc_location(),
+ TREE_TYPE(left),
+ integer_zero_node));
+ tree neg_one =
+ fold_build2_loc(this->location().gcc_location(),
+ MINUS_EXPR, TREE_TYPE(left),
+ fold_convert_loc(this->location().gcc_location(),
+ TREE_TYPE(left),
+ integer_zero_node),
+ fold_convert_loc(this->location().gcc_location(),
+ TREE_TYPE(left),
+ integer_one_node));
+ overflow_result =
+ fold_build3_loc(this->location().gcc_location(), COND_EXPR,
+ TREE_TYPE(left), neg, neg_one,
+ overflow_result);
+ }
+
+ ret = fold_build3_loc(this->location().gcc_location(), COND_EXPR,
+ TREE_TYPE(left), compare, ret, overflow_result);
if (eval_saved != NULL_TREE)
- ret = fold_build2_loc(this->location(), COMPOUND_EXPR,
+ ret = fold_build2_loc(this->location().gcc_location(), COMPOUND_EXPR,
TREE_TYPE(ret), eval_saved, ret);
}
exp->write_c_string(" &^ ");
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
this->right_->export_expression(exp);
exp->write_c_string(")");
return Expression::make_binary(op, left, right, imp->location());
}
+// Dump ast representation of a binary expression.
+
+void
+Binary_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "(";
+ ast_dump_context->dump_expression(this->left_);
+ ast_dump_context->ostream() << " ";
+ ast_dump_context->dump_operator(this->op_);
+ ast_dump_context->ostream() << " ";
+ ast_dump_context->dump_expression(this->right_);
+ ast_dump_context->ostream() << ") ";
+}
+
// Make a binary expression.
Expression*
Expression::make_binary(Operator op, Expression* left, Expression* right,
- source_location location)
+ Location location)
{
return new Binary_expression(op, left, right, location);
}
Expression::comparison_tree(Translate_context* context, Operator op,
Type* left_type, tree left_tree,
Type* right_type, tree right_tree,
- source_location location)
+ Location location)
{
enum tree_code code;
switch (op)
code = GE_EXPR;
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
if (left_type->is_string_type() && right_type->is_string_type())
{
- tree string_type = Type::make_string_type()->get_tree(context->gogo());
+ Type* st = Type::make_string_type();
+ tree string_type = type_to_tree(st->get_backend(context->gogo()));
static tree string_compare_decl;
left_tree = Gogo::call_builtin(&string_compare_decl,
location,
else if (TREE_ADDRESSABLE(TREE_TYPE(right_tree)) || DECL_P(right_tree))
{
make_tmp = NULL_TREE;
- arg = build_fold_addr_expr_loc(location, right_tree);
+ arg = build_fold_addr_expr_loc(location.gcc_location(), right_tree);
if (DECL_P(right_tree))
TREE_ADDRESSABLE(right_tree) = 1;
}
DECL_INITIAL(tmp) = right_tree;
TREE_ADDRESSABLE(tmp) = 1;
make_tmp = build1(DECL_EXPR, void_type_node, tmp);
- SET_EXPR_LOCATION(make_tmp, location);
- arg = build_fold_addr_expr_loc(location, tmp);
+ SET_EXPR_LOCATION(make_tmp, location.gcc_location());
+ arg = build_fold_addr_expr_loc(location.gcc_location(), tmp);
}
- arg = fold_convert_loc(location, ptr_type_node, arg);
+ arg = fold_convert_loc(location.gcc_location(), ptr_type_node, arg);
- tree descriptor = right_type->type_descriptor_pointer(context->gogo());
+ tree descriptor = right_type->type_descriptor_pointer(context->gogo(),
+ location);
if (left_type->interface_type()->is_empty())
{
{
if (left_type->interface_type()->is_empty())
{
- gcc_assert(op == OPERATOR_EQEQ || op == OPERATOR_NOTEQ);
+ go_assert(op == OPERATOR_EQEQ || op == OPERATOR_NOTEQ);
std::swap(left_type, right_type);
std::swap(left_tree, right_tree);
}
- gcc_assert(!left_type->interface_type()->is_empty());
- gcc_assert(right_type->interface_type()->is_empty());
+ go_assert(!left_type->interface_type()->is_empty());
+ go_assert(right_type->interface_type()->is_empty());
static tree interface_empty_compare_decl;
left_tree = Gogo::call_builtin(&interface_empty_compare_decl,
location,
{
// An interface is nil if the first field is nil.
tree left_type_tree = TREE_TYPE(left_tree);
- gcc_assert(TREE_CODE(left_type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(left_type_tree) == RECORD_TYPE);
tree field = TYPE_FIELDS(left_type_tree);
left_tree = build3(COMPONENT_REF, TREE_TYPE(field), left_tree,
field, NULL_TREE);
}
else
{
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(left_tree)));
+ go_assert(POINTER_TYPE_P(TREE_TYPE(left_tree)));
right_tree = fold_convert(TREE_TYPE(left_tree), null_pointer_node);
}
}
tree ret = fold_build2(code, boolean_type_node, left_tree, right_tree);
if (CAN_HAVE_LOCATION_P(ret))
- SET_EXPR_LOCATION(ret, location);
+ SET_EXPR_LOCATION(ret, location.gcc_location());
return ret;
}
int
Bound_method_expression::do_traverse(Traverse* traverse)
{
- if (Expression::traverse(&this->expr_, traverse) == TRAVERSE_EXIT)
- return TRAVERSE_EXIT;
- return Expression::traverse(&this->method_, traverse);
+ return Expression::traverse(&this->expr_, traverse);
}
// Return the type of a bound method expression. The type of this
Type*
Bound_method_expression::do_type()
{
- return this->method_->type();
-}
+ if (this->method_->is_function())
+ return this->method_->func_value()->type();
+ else if (this->method_->is_function_declaration())
+ return this->method_->func_declaration_value()->type();
+ else
+ return Type::make_error_type();
+}
// Determine the types of a method expression.
void
Bound_method_expression::do_determine_type(const Type_context*)
{
- this->method_->determine_type_no_context();
- Type* mtype = this->method_->type();
- Function_type* fntype = mtype == NULL ? NULL : mtype->function_type();
+ Function_type* fntype = this->type()->function_type();
if (fntype == NULL || !fntype->is_method())
this->expr_->determine_type_no_context();
else
void
Bound_method_expression::do_check_types(Gogo*)
{
- Type* type = this->method_->type()->deref();
- if (type == NULL
- || type->function_type() == NULL
- || !type->function_type()->is_method())
+ if (!this->method_->is_function()
+ && !this->method_->is_function_declaration())
this->report_error(_("object is not a method"));
else
{
- Type* rtype = type->function_type()->receiver()->type()->deref();
+ Type* rtype = this->type()->function_type()->receiver()->type()->deref();
Type* etype = (this->expr_type_ != NULL
? this->expr_type_
: this->expr_->type());
return error_mark_node;
}
+// Dump ast representation of a bound method expression.
+
+void
+Bound_method_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ if (this->expr_type_ != NULL)
+ ast_dump_context->ostream() << "(";
+ ast_dump_context->dump_expression(this->expr_);
+ if (this->expr_type_ != NULL)
+ {
+ ast_dump_context->ostream() << ":";
+ ast_dump_context->dump_type(this->expr_type_);
+ ast_dump_context->ostream() << ")";
+ }
+
+ ast_dump_context->ostream() << "." << this->method_->name();
+}
+
// Make a method expression.
Bound_method_expression*
-Expression::make_bound_method(Expression* expr, Expression* method,
- source_location location)
+Expression::make_bound_method(Expression* expr, Named_object* method,
+ Location location)
{
return new Bound_method_expression(expr, method, location);
}
{
public:
Builtin_call_expression(Gogo* gogo, Expression* fn, Expression_list* args,
- bool is_varargs, source_location location);
+ bool is_varargs, Location location);
protected:
// This overrides Call_expression::do_lower.
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
bool
do_is_constant() const;
bool
- do_integer_constant_value(bool, mpz_t, Type**) const;
-
- bool
- do_float_constant_value(mpfr_t, Type**) const;
+ do_numeric_constant_value(Numeric_constant*) const;
- bool
- do_complex_constant_value(mpfr_t, mpfr_t, Type**) const;
+ void
+ do_discarding_value();
Type*
do_type();
BUILTIN_CLOSE,
BUILTIN_COMPLEX,
BUILTIN_COPY,
+ BUILTIN_DELETE,
BUILTIN_IMAG,
BUILTIN_LEN,
BUILTIN_MAKE,
static Type*
complex_type(Type*);
+ Expression*
+ lower_make();
+
+ bool
+ check_int_value(Expression*);
+
// A pointer back to the general IR structure. This avoids a global
// variable, or passing it around everywhere.
Gogo* gogo_;
Expression* fn,
Expression_list* args,
bool is_varargs,
- source_location location)
+ Location location)
: Call_expression(fn, args, is_varargs, location),
gogo_(gogo), code_(BUILTIN_INVALID), seen_(false)
{
Func_expression* fnexp = this->fn()->func_expression();
- gcc_assert(fnexp != NULL);
+ go_assert(fnexp != NULL);
const std::string& name(fnexp->named_object()->name());
if (name == "append")
this->code_ = BUILTIN_APPEND;
this->code_ = BUILTIN_COMPLEX;
else if (name == "copy")
this->code_ = BUILTIN_COPY;
+ else if (name == "delete")
+ this->code_ = BUILTIN_DELETE;
else if (name == "imag")
this->code_ = BUILTIN_IMAG;
else if (name == "len")
else if (name == "Sizeof")
this->code_ = BUILTIN_SIZEOF;
else
- gcc_unreachable();
+ go_unreachable();
}
// Return whether this is a call to recover. This is a virtual
Builtin_call_expression::do_set_recover_arg(Expression* arg)
{
const Expression_list* args = this->args();
- gcc_assert(args == NULL || args->empty());
+ go_assert(args == NULL || args->empty());
Expression_list* new_args = new Expression_list();
new_args->push_back(arg);
this->set_args(new_args);
// specific expressions. We also convert to a constant if we can.
Expression*
-Builtin_call_expression::do_lower(Gogo* gogo, Named_object* function, int)
+Builtin_call_expression::do_lower(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter, int)
{
+ if (this->classification() == EXPRESSION_ERROR)
+ return this;
+
+ Location loc = this->location();
+
if (this->is_varargs() && this->code_ != BUILTIN_APPEND)
{
this->report_error(_("invalid use of %<...%> with builtin function"));
- return Expression::make_error(this->location());
+ return Expression::make_error(loc);
}
- if (this->code_ == BUILTIN_NEW)
- {
- const Expression_list* args = this->args();
- if (args == NULL || args->size() < 1)
- this->report_error(_("not enough arguments"));
- else if (args->size() > 1)
- this->report_error(_("too many arguments"));
- else
- {
- Expression* arg = args->front();
- if (!arg->is_type_expression())
- {
- error_at(arg->location(), "expected type");
- this->set_is_error();
- }
- else
- return Expression::make_allocation(arg->type(), this->location());
- }
- }
- else if (this->code_ == BUILTIN_MAKE)
- {
- const Expression_list* args = this->args();
- if (args == NULL || args->size() < 1)
- this->report_error(_("not enough arguments"));
- else
- {
- Expression* arg = args->front();
- if (!arg->is_type_expression())
- {
- error_at(arg->location(), "expected type");
- this->set_is_error();
- }
- else
- {
- Expression_list* newargs;
- if (args->size() == 1)
- newargs = NULL;
- else
- {
- newargs = new Expression_list();
- Expression_list::const_iterator p = args->begin();
- ++p;
- for (; p != args->end(); ++p)
- newargs->push_back(*p);
- }
- return Expression::make_make(arg->type(), newargs,
- this->location());
- }
- }
- }
- else if (this->is_constant())
+ if (this->is_constant())
{
// We can only lower len and cap if there are no function calls
// in the arguments. Otherwise we have to make the call.
}
}
- mpz_t ival;
- mpz_init(ival);
- Type* type;
- if (this->integer_constant_value(true, ival, &type))
- {
- Expression* ret = Expression::make_integer(&ival, type,
- this->location());
- mpz_clear(ival);
- return ret;
- }
- mpz_clear(ival);
+ Numeric_constant nc;
+ if (this->numeric_constant_value(&nc))
+ return nc.expression(loc);
+ }
+
+ switch (this->code_)
+ {
+ default:
+ break;
+
+ case BUILTIN_NEW:
+ {
+ const Expression_list* args = this->args();
+ if (args == NULL || args->size() < 1)
+ this->report_error(_("not enough arguments"));
+ else if (args->size() > 1)
+ this->report_error(_("too many arguments"));
+ else
+ {
+ Expression* arg = args->front();
+ if (!arg->is_type_expression())
+ {
+ error_at(arg->location(), "expected type");
+ this->set_is_error();
+ }
+ else
+ return Expression::make_allocation(arg->type(), loc);
+ }
+ }
+ break;
+
+ case BUILTIN_MAKE:
+ return this->lower_make();
- mpfr_t rval;
- mpfr_init(rval);
- if (this->float_constant_value(rval, &type))
+ case BUILTIN_RECOVER:
+ if (function != NULL)
+ function->func_value()->set_calls_recover();
+ else
{
- Expression* ret = Expression::make_float(&rval, type,
- this->location());
- mpfr_clear(rval);
- return ret;
+ // Calling recover outside of a function always returns the
+ // nil empty interface.
+ Type* eface = Type::make_empty_interface_type(loc);
+ return Expression::make_cast(eface, Expression::make_nil(loc), loc);
}
+ break;
- mpfr_t imag;
- mpfr_init(imag);
- if (this->complex_constant_value(rval, imag, &type))
+ case BUILTIN_APPEND:
+ {
+ // Lower the varargs.
+ const Expression_list* args = this->args();
+ if (args == NULL || args->empty())
+ return this;
+ Type* slice_type = args->front()->type();
+ if (!slice_type->is_slice_type())
+ {
+ error_at(args->front()->location(), "argument 1 must be a slice");
+ this->set_is_error();
+ return this;
+ }
+ Type* element_type = slice_type->array_type()->element_type();
+ this->lower_varargs(gogo, function, inserter,
+ Type::make_array_type(element_type, NULL),
+ 2);
+ }
+ break;
+
+ case BUILTIN_DELETE:
+ {
+ // Lower to a runtime function call.
+ const Expression_list* args = this->args();
+ if (args == NULL || args->size() < 2)
+ this->report_error(_("not enough arguments"));
+ else if (args->size() > 2)
+ this->report_error(_("too many arguments"));
+ else if (args->front()->type()->map_type() == NULL)
+ this->report_error(_("argument 1 must be a map"));
+ else
+ {
+ // Since this function returns no value it must appear in
+ // a statement by itself, so we don't have to worry about
+ // order of evaluation of values around it. Evaluate the
+ // map first to get order of evaluation right.
+ Map_type* mt = args->front()->type()->map_type();
+ Temporary_statement* map_temp =
+ Statement::make_temporary(mt, args->front(), loc);
+ inserter->insert(map_temp);
+
+ Temporary_statement* key_temp =
+ Statement::make_temporary(mt->key_type(), args->back(), loc);
+ inserter->insert(key_temp);
+
+ Expression* e1 = Expression::make_temporary_reference(map_temp,
+ loc);
+ Expression* e2 = Expression::make_temporary_reference(key_temp,
+ loc);
+ e2 = Expression::make_unary(OPERATOR_AND, e2, loc);
+ return Runtime::make_call(Runtime::MAPDELETE, this->location(),
+ 2, e1, e2);
+ }
+ }
+ break;
+ }
+
+ return this;
+}
+
+// Lower a make expression.
+
+Expression*
+Builtin_call_expression::lower_make()
+{
+ Location loc = this->location();
+
+ const Expression_list* args = this->args();
+ if (args == NULL || args->size() < 1)
+ {
+ this->report_error(_("not enough arguments"));
+ return Expression::make_error(this->location());
+ }
+
+ Expression_list::const_iterator parg = args->begin();
+
+ Expression* first_arg = *parg;
+ if (!first_arg->is_type_expression())
+ {
+ error_at(first_arg->location(), "expected type");
+ this->set_is_error();
+ return Expression::make_error(this->location());
+ }
+ Type* type = first_arg->type();
+
+ bool is_slice = false;
+ bool is_map = false;
+ bool is_chan = false;
+ if (type->is_slice_type())
+ is_slice = true;
+ else if (type->map_type() != NULL)
+ is_map = true;
+ else if (type->channel_type() != NULL)
+ is_chan = true;
+ else
+ {
+ this->report_error(_("invalid type for make function"));
+ return Expression::make_error(this->location());
+ }
+
+ bool have_big_args = false;
+ Type* uintptr_type = Type::lookup_integer_type("uintptr");
+ int uintptr_bits = uintptr_type->integer_type()->bits();
+
+ ++parg;
+ Expression* len_arg;
+ if (parg == args->end())
+ {
+ if (is_slice)
{
- Expression* ret = Expression::make_complex(&rval, &imag, type,
- this->location());
- mpfr_clear(rval);
- mpfr_clear(imag);
- return ret;
+ this->report_error(_("length required when allocating a slice"));
+ return Expression::make_error(this->location());
}
- mpfr_clear(rval);
- mpfr_clear(imag);
+
+ mpz_t zval;
+ mpz_init_set_ui(zval, 0);
+ len_arg = Expression::make_integer(&zval, NULL, loc);
+ mpz_clear(zval);
}
- else if (this->code_ == BUILTIN_RECOVER)
+ else
{
- if (function != NULL)
- function->func_value()->set_calls_recover();
- else
+ len_arg = *parg;
+ if (!this->check_int_value(len_arg))
{
- // Calling recover outside of a function always returns the
- // nil empty interface.
- Type* eface = Type::make_interface_type(NULL, this->location());
- return Expression::make_cast(eface,
- Expression::make_nil(this->location()),
- this->location());
+ this->report_error(_("bad size for make"));
+ return Expression::make_error(this->location());
}
+ if (len_arg->type()->integer_type() != NULL
+ && len_arg->type()->integer_type()->bits() > uintptr_bits)
+ have_big_args = true;
+ ++parg;
}
- else if (this->code_ == BUILTIN_APPEND)
+
+ Expression* cap_arg = NULL;
+ if (is_slice && parg != args->end())
{
- // Lower the varargs.
- const Expression_list* args = this->args();
- if (args == NULL || args->empty())
- return this;
- Type* slice_type = args->front()->type();
- if (!slice_type->is_open_array_type())
+ cap_arg = *parg;
+ if (!this->check_int_value(cap_arg))
{
- error_at(args->front()->location(), "argument 1 must be a slice");
- this->set_is_error();
- return this;
+ this->report_error(_("bad capacity when making slice"));
+ return Expression::make_error(this->location());
}
- return this->lower_varargs(gogo, function, slice_type, 2);
+ if (cap_arg->type()->integer_type() != NULL
+ && cap_arg->type()->integer_type()->bits() > uintptr_bits)
+ have_big_args = true;
+ ++parg;
}
- return this;
+ if (parg != args->end())
+ {
+ this->report_error(_("too many arguments to make"));
+ return Expression::make_error(this->location());
+ }
+
+ Location type_loc = first_arg->location();
+ Expression* type_arg;
+ if (is_slice || is_chan)
+ type_arg = Expression::make_type_descriptor(type, type_loc);
+ else if (is_map)
+ type_arg = Expression::make_map_descriptor(type->map_type(), type_loc);
+ else
+ go_unreachable();
+
+ Expression* call;
+ if (is_slice)
+ {
+ if (cap_arg == NULL)
+ call = Runtime::make_call((have_big_args
+ ? Runtime::MAKESLICE1BIG
+ : Runtime::MAKESLICE1),
+ loc, 2, type_arg, len_arg);
+ else
+ call = Runtime::make_call((have_big_args
+ ? Runtime::MAKESLICE2BIG
+ : Runtime::MAKESLICE2),
+ loc, 3, type_arg, len_arg, cap_arg);
+ }
+ else if (is_map)
+ call = Runtime::make_call((have_big_args
+ ? Runtime::MAKEMAPBIG
+ : Runtime::MAKEMAP),
+ loc, 2, type_arg, len_arg);
+ else if (is_chan)
+ call = Runtime::make_call((have_big_args
+ ? Runtime::MAKECHANBIG
+ : Runtime::MAKECHAN),
+ loc, 2, type_arg, len_arg);
+ else
+ go_unreachable();
+
+ return Expression::make_unsafe_cast(type, call, loc);
+}
+
+// Return whether an expression has an integer value. Report an error
+// if not. This is used when handling calls to the predeclared make
+// function.
+
+bool
+Builtin_call_expression::check_int_value(Expression* e)
+{
+ if (e->type()->integer_type() != NULL)
+ return true;
+
+ // Check for a floating point constant with integer value.
+ Numeric_constant nc;
+ mpz_t ival;
+ if (e->numeric_constant_value(&nc) && nc.to_int(&ival))
+ {
+ mpz_clear(ival);
+ return true;
+ }
+
+ return false;
}
// Return the type of the real or imag functions, given the type of
if (arg_type->points_to() != NULL
&& arg_type->points_to()->array_type() != NULL
- && !arg_type->points_to()->is_open_array_type())
+ && !arg_type->points_to()->is_slice_type())
arg_type = arg_type->points_to();
if (arg_type->array_type() != NULL
return false;
}
-// Return an integer constant value if possible.
+// Return a numeric constant if possible.
bool
-Builtin_call_expression::do_integer_constant_value(bool iota_is_constant,
- mpz_t val,
- Type** ptype) const
+Builtin_call_expression::do_numeric_constant_value(Numeric_constant* nc) const
{
if (this->code_ == BUILTIN_LEN
|| this->code_ == BUILTIN_CAP)
std::string sval;
if (arg->string_constant_value(&sval))
{
- mpz_set_ui(val, sval.length());
- *ptype = Type::lookup_integer_type("int");
+ nc->set_unsigned_long(Type::lookup_integer_type("int"),
+ sval.length());
return true;
}
}
if (arg_type->points_to() != NULL
&& arg_type->points_to()->array_type() != NULL
- && !arg_type->points_to()->is_open_array_type())
+ && !arg_type->points_to()->is_slice_type())
arg_type = arg_type->points_to();
if (arg_type->array_type() != NULL
return false;
Expression* e = arg_type->array_type()->length();
this->seen_ = true;
- bool r = e->integer_constant_value(iota_is_constant, val, ptype);
+ bool r = e->numeric_constant_value(nc);
this->seen_ = false;
if (r)
{
- *ptype = Type::lookup_integer_type("int");
- return true;
+ if (!nc->set_type(Type::lookup_integer_type("int"), false,
+ this->location()))
+ r = false;
}
+ return r;
}
}
else if (this->code_ == BUILTIN_SIZEOF
return false;
if (arg_type->named_type() != NULL)
arg_type->named_type()->convert(this->gogo_);
- tree arg_type_tree = arg_type->get_tree(this->gogo_);
- if (arg_type_tree == error_mark_node)
- return false;
- unsigned long val_long;
+
+ unsigned int ret;
if (this->code_ == BUILTIN_SIZEOF)
{
- tree type_size = TYPE_SIZE_UNIT(arg_type_tree);
- gcc_assert(TREE_CODE(type_size) == INTEGER_CST);
- if (TREE_INT_CST_HIGH(type_size) != 0)
- return false;
- unsigned HOST_WIDE_INT val_wide = TREE_INT_CST_LOW(type_size);
- val_long = static_cast<unsigned long>(val_wide);
- if (val_long != val_wide)
+ if (!arg_type->backend_type_size(this->gogo_, &ret))
return false;
}
else if (this->code_ == BUILTIN_ALIGNOF)
{
if (arg->field_reference_expression() == NULL)
- val_long = go_type_alignment(arg_type_tree);
+ {
+ if (!arg_type->backend_type_align(this->gogo_, &ret))
+ return false;
+ }
else
{
// Calling unsafe.Alignof(s.f) returns the alignment of
// the type of f when it is used as a field in a struct.
- val_long = go_field_alignment(arg_type_tree);
+ if (!arg_type->backend_type_field_align(this->gogo_, &ret))
+ return false;
}
}
else
- gcc_unreachable();
- mpz_set_ui(val, val_long);
- *ptype = NULL;
+ go_unreachable();
+
+ nc->set_unsigned_long(NULL, static_cast<unsigned long>(ret));
return true;
}
else if (this->code_ == BUILTIN_OFFSETOF)
return false;
if (st->named_type() != NULL)
st->named_type()->convert(this->gogo_);
- tree struct_tree = st->get_tree(this->gogo_);
- gcc_assert(TREE_CODE(struct_tree) == RECORD_TYPE);
- tree field = TYPE_FIELDS(struct_tree);
- for (unsigned int index = farg->field_index(); index > 0; --index)
- {
- field = DECL_CHAIN(field);
- gcc_assert(field != NULL_TREE);
- }
- HOST_WIDE_INT offset_wide = int_byte_position (field);
- if (offset_wide < 0)
+ unsigned int offset;
+ if (!st->struct_type()->backend_field_offset(this->gogo_,
+ farg->field_index(),
+ &offset))
return false;
- unsigned long offset_long = static_cast<unsigned long>(offset_wide);
- if (offset_long != static_cast<unsigned HOST_WIDE_INT>(offset_wide))
- return false;
- mpz_set_ui(val, offset_long);
+ nc->set_unsigned_long(NULL, static_cast<unsigned long>(offset));
return true;
}
- return false;
-}
-
-// Return a floating point constant value if possible.
-
-bool
-Builtin_call_expression::do_float_constant_value(mpfr_t val,
- Type** ptype) const
-{
- if (this->code_ == BUILTIN_REAL || this->code_ == BUILTIN_IMAG)
+ else if (this->code_ == BUILTIN_REAL || this->code_ == BUILTIN_IMAG)
{
Expression* arg = this->one_arg();
if (arg == NULL)
return false;
+ Numeric_constant argnc;
+ if (!arg->numeric_constant_value(&argnc))
+ return false;
+
mpfr_t real;
mpfr_t imag;
- mpfr_init(real);
- mpfr_init(imag);
-
- bool ret = false;
- Type* type;
- if (arg->complex_constant_value(real, imag, &type))
- {
- if (this->code_ == BUILTIN_REAL)
- mpfr_set(val, real, GMP_RNDN);
- else
- mpfr_set(val, imag, GMP_RNDN);
- *ptype = Builtin_call_expression::real_imag_type(type);
- ret = true;
- }
+ if (!argnc.to_complex(&real, &imag))
+ return false;
- mpfr_clear(real);
- mpfr_clear(imag);
- return ret;
+ Type* type = Builtin_call_expression::real_imag_type(argnc.type());
+ if (this->code_ == BUILTIN_REAL)
+ nc->set_float(type, real);
+ else
+ nc->set_float(type, imag);
+ return true;
}
-
- return false;
-}
-
-// Return a complex constant value if possible.
-
-bool
-Builtin_call_expression::do_complex_constant_value(mpfr_t real, mpfr_t imag,
- Type** ptype) const
-{
- if (this->code_ == BUILTIN_COMPLEX)
+ else if (this->code_ == BUILTIN_COMPLEX)
{
const Expression_list* args = this->args();
if (args == NULL || args->size() != 2)
return false;
+ Numeric_constant rnc;
+ if (!args->front()->numeric_constant_value(&rnc))
+ return false;
+ Numeric_constant inc;
+ if (!args->back()->numeric_constant_value(&inc))
+ return false;
+
+ if (rnc.type() != NULL
+ && !rnc.type()->is_abstract()
+ && inc.type() != NULL
+ && !inc.type()->is_abstract()
+ && !Type::are_identical(rnc.type(), inc.type(), false, NULL))
+ return false;
+
mpfr_t r;
- mpfr_init(r);
- Type* rtype;
- if (!args->front()->float_constant_value(r, &rtype))
+ if (!rnc.to_float(&r))
+ return false;
+ mpfr_t i;
+ if (!inc.to_float(&i))
{
mpfr_clear(r);
return false;
}
- mpfr_t i;
- mpfr_init(i);
+ Type* arg_type = rnc.type();
+ if (arg_type == NULL || arg_type->is_abstract())
+ arg_type = inc.type();
- bool ret = false;
- Type* itype;
- if (args->back()->float_constant_value(i, &itype)
- && Type::are_identical(rtype, itype, false, NULL))
- {
- mpfr_set(real, r, GMP_RNDN);
- mpfr_set(imag, i, GMP_RNDN);
- *ptype = Builtin_call_expression::complex_type(rtype);
- ret = true;
- }
+ Type* type = Builtin_call_expression::complex_type(arg_type);
+ nc->set_complex(type, r, i);
mpfr_clear(r);
mpfr_clear(i);
- return ret;
+ return true;
}
return false;
}
-// Return the type.
+// Give an error if we are discarding the value of an expression which
+// should not normally be discarded. We don't give an error for
+// discarding the value of an ordinary function call, but we do for
+// builtin functions, purely for consistency with the gc compiler.
-Type*
-Builtin_call_expression::do_type()
+void
+Builtin_call_expression::do_discarding_value()
{
switch (this->code_)
{
case BUILTIN_INVALID:
default:
- gcc_unreachable();
-
- case BUILTIN_NEW:
- case BUILTIN_MAKE:
- {
- const Expression_list* args = this->args();
- if (args == NULL || args->empty())
- return Type::make_error_type();
- return Type::make_pointer_type(args->front()->type());
- }
+ go_unreachable();
+ case BUILTIN_APPEND:
case BUILTIN_CAP:
- case BUILTIN_COPY:
+ case BUILTIN_COMPLEX:
+ case BUILTIN_IMAG:
case BUILTIN_LEN:
+ case BUILTIN_MAKE:
+ case BUILTIN_NEW:
+ case BUILTIN_REAL:
case BUILTIN_ALIGNOF:
case BUILTIN_OFFSETOF:
case BUILTIN_SIZEOF:
- return Type::lookup_integer_type("int");
+ this->unused_value_error();
+ break;
case BUILTIN_CLOSE:
+ case BUILTIN_COPY:
+ case BUILTIN_DELETE:
case BUILTIN_PANIC:
case BUILTIN_PRINT:
case BUILTIN_PRINTLN:
- return Type::make_void_type();
+ case BUILTIN_RECOVER:
+ break;
+ }
+}
+
+// Return the type.
+
+Type*
+Builtin_call_expression::do_type()
+{
+ switch (this->code_)
+ {
+ case BUILTIN_INVALID:
+ default:
+ go_unreachable();
+
+ case BUILTIN_NEW:
+ case BUILTIN_MAKE:
+ {
+ const Expression_list* args = this->args();
+ if (args == NULL || args->empty())
+ return Type::make_error_type();
+ return Type::make_pointer_type(args->front()->type());
+ }
+
+ case BUILTIN_CAP:
+ case BUILTIN_COPY:
+ case BUILTIN_LEN:
+ case BUILTIN_ALIGNOF:
+ case BUILTIN_OFFSETOF:
+ case BUILTIN_SIZEOF:
+ return Type::lookup_integer_type("int");
+
+ case BUILTIN_CLOSE:
+ case BUILTIN_DELETE:
+ case BUILTIN_PANIC:
+ case BUILTIN_PRINT:
+ case BUILTIN_PRINTLN:
+ return Type::make_void_type();
case BUILTIN_RECOVER:
- return Type::make_interface_type(NULL, BUILTINS_LOCATION);
+ return Type::make_empty_interface_type(Linemap::predeclared_location());
case BUILTIN_APPEND:
{
{
if (atype->integer_type() != NULL)
{
- mpz_t val;
- mpz_init(val);
- Type* dummy;
- if (this->integer_constant_value(true, val, &dummy)
- && mpz_sgn(val) >= 0)
- want_type = Type::lookup_integer_type("uint64");
- else
+ Numeric_constant nc;
+ if (this->numeric_constant_value(&nc))
+ {
+ mpz_t val;
+ if (nc.to_int(&val))
+ {
+ if (mpz_sgn(val) >= 0)
+ want_type = Type::lookup_integer_type("uint64");
+ mpz_clear(val);
+ }
+ }
+ if (want_type == NULL)
want_type = Type::lookup_integer_type("int64");
- mpz_clear(val);
}
else if (atype->float_type() != NULL)
want_type = Type::lookup_float_type("float64");
else if (atype->is_abstract_boolean_type())
want_type = Type::lookup_bool_type();
else
- gcc_unreachable();
+ go_unreachable();
subcontext.type = want_type;
}
}
case BUILTIN_INVALID:
case BUILTIN_NEW:
case BUILTIN_MAKE:
+ case BUILTIN_DELETE:
return;
case BUILTIN_LEN:
Type* arg_type = this->one_arg()->type();
if (arg_type->points_to() != NULL
&& arg_type->points_to()->array_type() != NULL
- && !arg_type->points_to()->is_open_array_type())
+ && !arg_type->points_to()->is_slice_type())
arg_type = arg_type->points_to();
if (this->code_ == BUILTIN_CAP)
{
|| type->channel_type() != NULL
|| type->map_type() != NULL
|| type->function_type() != NULL
- || type->is_open_array_type())
+ || type->is_slice_type())
;
+ else if ((*p)->is_type_expression())
+ {
+ // If this is a type expression it's going to give
+ // an error anyhow, so we don't need one here.
+ }
else
this->report_error(_("unsupported argument type to "
"builtin function"));
{
if (this->one_arg()->type()->channel_type() == NULL)
this->report_error(_("argument must be channel"));
+ else if (!this->one_arg()->type()->channel_type()->may_send())
+ this->report_error(_("cannot close receive-only channel"));
}
break;
break;
Type* e1;
- if (arg1_type->is_open_array_type())
+ if (arg1_type->is_slice_type())
e1 = arg1_type->array_type()->element_type();
else
{
break;
}
- Type* e2;
- if (arg2_type->is_open_array_type())
- e2 = arg2_type->array_type()->element_type();
+ if (arg2_type->is_slice_type())
+ {
+ Type* e2 = arg2_type->array_type()->element_type();
+ if (!Type::are_identical(e1, e2, true, NULL))
+ this->report_error(_("element types must be the same"));
+ }
else if (arg2_type->is_string_type())
- e2 = Type::lookup_integer_type("uint8");
- else
{
- this->report_error(_("right argument must be a slice or a string"));
- break;
+ if (e1->integer_type() == NULL || !e1->integer_type()->is_byte())
+ this->report_error(_("first argument must be []byte"));
}
-
- if (!Type::are_identical(e1, e2, true, NULL))
- this->report_error(_("element types must be the same"));
+ else
+ this->report_error(_("second argument must be slice or string"));
}
break;
this->report_error(_("too many arguments"));
break;
}
+ if (args->front()->type()->is_error()
+ || args->back()->type()->is_error())
+ break;
+
+ Array_type* at = args->front()->type()->array_type();
+ Type* e = at->element_type();
+
+ // The language permits appending a string to a []byte, as a
+ // special case.
+ if (args->back()->type()->is_string_type())
+ {
+ if (e->integer_type() != NULL && e->integer_type()->is_byte())
+ break;
+ }
+
+ // The language says that the second argument must be
+ // assignable to a slice of the element type of the first
+ // argument. We already know the first argument is a slice
+ // type.
+ Type* arg2_type = Type::make_array_type(e, NULL);
std::string reason;
- if (!Type::are_assignable(args->front()->type(), args->back()->type(),
- &reason))
+ if (!Type::are_assignable(arg2_type, args->back()->type(), &reason))
{
if (reason.empty())
- this->report_error(_("arguments 1 and 2 have different types"));
+ this->report_error(_("argument 2 has invalid type"));
else
{
- error_at(this->location(),
- "arguments 1 and 2 have different types (%s)",
+ error_at(this->location(), "argument 2 has invalid type (%s)",
reason.c_str());
this->set_is_error();
}
break;
default:
- gcc_unreachable();
+ go_unreachable();
}
}
Builtin_call_expression::do_get_tree(Translate_context* context)
{
Gogo* gogo = context->gogo();
- source_location location = this->location();
+ Location location = this->location();
switch (this->code_)
{
case BUILTIN_INVALID:
case BUILTIN_NEW:
case BUILTIN_MAKE:
- gcc_unreachable();
+ go_unreachable();
case BUILTIN_LEN:
case BUILTIN_CAP:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 1);
+ go_assert(args != NULL && args->size() == 1);
Expression* arg = *args->begin();
Type* arg_type = arg->type();
if (this->seen_)
{
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return error_mark_node;
}
this->seen_ = true;
if (arg_type->points_to() != NULL)
{
arg_type = arg_type->points_to();
- gcc_assert(arg_type->array_type() != NULL
- && !arg_type->is_open_array_type());
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(arg_tree)));
+ go_assert(arg_type->array_type() != NULL
+ && !arg_type->is_slice_type());
+ go_assert(POINTER_TYPE_P(TREE_TYPE(arg_tree)));
arg_tree = build_fold_indirect_ref(arg_tree);
}
{
if (this->seen_)
{
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return error_mark_node;
}
this->seen_ = true;
}
else if (arg_type->map_type() != NULL)
{
+ tree arg_type_tree = type_to_tree(arg_type->get_backend(gogo));
static tree map_len_fndecl;
val_tree = Gogo::call_builtin(&map_len_fndecl,
location,
"__go_map_len",
1,
- sizetype,
- arg_type->get_tree(gogo),
+ integer_type_node,
+ arg_type_tree,
arg_tree);
}
else if (arg_type->channel_type() != NULL)
{
+ tree arg_type_tree = type_to_tree(arg_type->get_backend(gogo));
static tree chan_len_fndecl;
val_tree = Gogo::call_builtin(&chan_len_fndecl,
location,
"__go_chan_len",
1,
- sizetype,
- arg_type->get_tree(gogo),
+ integer_type_node,
+ arg_type_tree,
arg_tree);
}
else
- gcc_unreachable();
+ go_unreachable();
}
else
{
{
if (this->seen_)
{
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return error_mark_node;
}
this->seen_ = true;
}
else if (arg_type->channel_type() != NULL)
{
+ tree arg_type_tree = type_to_tree(arg_type->get_backend(gogo));
static tree chan_cap_fndecl;
val_tree = Gogo::call_builtin(&chan_cap_fndecl,
location,
"__go_chan_cap",
1,
- sizetype,
- arg_type->get_tree(gogo),
+ integer_type_node,
+ arg_type_tree,
arg_tree);
}
else
- gcc_unreachable();
+ go_unreachable();
}
if (val_tree == error_mark_node)
return error_mark_node;
- tree type_tree = Type::lookup_integer_type("int")->get_tree(gogo);
+ Type* int_type = Type::lookup_integer_type("int");
+ tree type_tree = type_to_tree(int_type->get_backend(gogo));
if (type_tree == TREE_TYPE(val_tree))
return val_tree;
else
pfndecl = &print_uint64_fndecl;
fnname = "__go_print_uint64";
Type* itype = Type::lookup_integer_type("uint64");
- arg = fold_convert_loc(location, itype->get_tree(gogo),
- arg);
+ Btype* bitype = itype->get_backend(gogo);
+ arg = fold_convert_loc(location.gcc_location(),
+ type_to_tree(bitype), arg);
}
else if (type->integer_type() != NULL)
{
pfndecl = &print_int64_fndecl;
fnname = "__go_print_int64";
Type* itype = Type::lookup_integer_type("int64");
- arg = fold_convert_loc(location, itype->get_tree(gogo),
- arg);
+ Btype* bitype = itype->get_backend(gogo);
+ arg = fold_convert_loc(location.gcc_location(),
+ type_to_tree(bitype), arg);
}
else if (type->float_type() != NULL)
{
static tree print_double_fndecl;
pfndecl = &print_double_fndecl;
fnname = "__go_print_double";
- arg = fold_convert_loc(location, double_type_node, arg);
+ arg = fold_convert_loc(location.gcc_location(),
+ double_type_node, arg);
}
else if (type->complex_type() != NULL)
{
static tree print_complex_fndecl;
pfndecl = &print_complex_fndecl;
fnname = "__go_print_complex";
- arg = fold_convert_loc(location, complex_double_type_node,
- arg);
+ arg = fold_convert_loc(location.gcc_location(),
+ complex_double_type_node, arg);
}
else if (type->is_boolean_type())
{
static tree print_pointer_fndecl;
pfndecl = &print_pointer_fndecl;
fnname = "__go_print_pointer";
- arg = fold_convert_loc(location, ptr_type_node, arg);
+ arg = fold_convert_loc(location.gcc_location(),
+ ptr_type_node, arg);
}
else if (type->interface_type() != NULL)
{
fnname = "__go_print_interface";
}
}
- else if (type->is_open_array_type())
+ else if (type->is_slice_type())
{
static tree print_slice_fndecl;
pfndecl = &print_slice_fndecl;
fnname = "__go_print_slice";
}
else
- gcc_unreachable();
+ {
+ go_assert(saw_errors());
+ return error_mark_node;
+ }
tree call = Gogo::call_builtin(pfndecl,
location,
case BUILTIN_PANIC:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 1);
+ go_assert(args != NULL && args->size() == 1);
Expression* arg = args->front();
tree arg_tree = arg->get_tree(context);
if (arg_tree == error_mark_node)
return error_mark_node;
- Type *empty = Type::make_interface_type(NULL, BUILTINS_LOCATION);
+ Type *empty =
+ Type::make_empty_interface_type(Linemap::predeclared_location());
arg_tree = Expression::convert_for_assignment(context, empty,
arg->type(),
arg_tree, location);
// The argument is set when building recover thunks. It's a
// boolean value which is true if we can recover a value now.
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 1);
+ go_assert(args != NULL && args->size() == 1);
Expression* arg = args->front();
tree arg_tree = arg->get_tree(context);
if (arg_tree == error_mark_node)
return error_mark_node;
- Type *empty = Type::make_interface_type(NULL, BUILTINS_LOCATION);
- tree empty_tree = empty->get_tree(context->gogo());
+ Type *empty =
+ Type::make_empty_interface_type(Linemap::predeclared_location());
+ tree empty_tree = type_to_tree(empty->get_backend(context->gogo()));
Type* nil_type = Type::make_nil_type();
Expression* nil = Expression::make_nil(location);
}
if (call == error_mark_node)
return error_mark_node;
- return fold_build3_loc(location, COND_EXPR, empty_tree, arg_tree,
- call, empty_nil_tree);
+ return fold_build3_loc(location.gcc_location(), COND_EXPR, empty_tree,
+ arg_tree, call, empty_nil_tree);
}
case BUILTIN_CLOSE:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 1);
+ go_assert(args != NULL && args->size() == 1);
Expression* arg = args->front();
tree arg_tree = arg->get_tree(context);
if (arg_tree == error_mark_node)
case BUILTIN_OFFSETOF:
case BUILTIN_ALIGNOF:
{
- mpz_t val;
- mpz_init(val);
- Type* dummy;
- bool b = this->integer_constant_value(true, val, &dummy);
- if (!b)
+ Numeric_constant nc;
+ unsigned long val;
+ if (!this->numeric_constant_value(&nc)
+ || nc.to_unsigned_long(&val) != Numeric_constant::NC_UL_VALID)
{
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return error_mark_node;
}
- tree type = Type::lookup_integer_type("int")->get_tree(gogo);
- tree ret = Expression::integer_constant_tree(val, type);
- mpz_clear(val);
- return ret;
+ Type* int_type = Type::lookup_integer_type("int");
+ tree type = type_to_tree(int_type->get_backend(gogo));
+ return build_int_cst(type, val);
}
case BUILTIN_COPY:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 2);
+ go_assert(args != NULL && args->size() == 2);
Expression* arg1 = args->front();
Expression* arg2 = args->back();
Type* arg2_type = arg2->type();
tree arg2_val;
tree arg2_len;
- if (arg2_type->is_open_array_type())
+ if (arg2_type->is_slice_type())
{
at = arg2_type->array_type();
arg2_tree = save_expr(arg2_tree);
arg1_len = save_expr(arg1_len);
arg2_len = save_expr(arg2_len);
- tree len = fold_build3_loc(location, COND_EXPR, TREE_TYPE(arg1_len),
- fold_build2_loc(location, LT_EXPR,
- boolean_type_node,
+ tree len = fold_build3_loc(location.gcc_location(), COND_EXPR,
+ TREE_TYPE(arg1_len),
+ fold_build2_loc(location.gcc_location(),
+ LT_EXPR, boolean_type_node,
arg1_len, arg2_len),
arg1_len, arg2_len);
len = save_expr(len);
Type* element_type = at->element_type();
- tree element_type_tree = element_type->get_tree(gogo);
+ Btype* element_btype = element_type->get_backend(gogo);
+ tree element_type_tree = type_to_tree(element_btype);
if (element_type_tree == error_mark_node)
return error_mark_node;
tree element_size = TYPE_SIZE_UNIT(element_type_tree);
- tree bytecount = fold_convert_loc(location, TREE_TYPE(element_size),
- len);
- bytecount = fold_build2_loc(location, MULT_EXPR,
+ tree bytecount = fold_convert_loc(location.gcc_location(),
+ TREE_TYPE(element_size), len);
+ bytecount = fold_build2_loc(location.gcc_location(), MULT_EXPR,
TREE_TYPE(element_size),
bytecount, element_size);
- bytecount = fold_convert_loc(location, size_type_node, bytecount);
+ bytecount = fold_convert_loc(location.gcc_location(), size_type_node,
+ bytecount);
- arg1_val = fold_convert_loc(location, ptr_type_node, arg1_val);
- arg2_val = fold_convert_loc(location, ptr_type_node, arg2_val);
+ arg1_val = fold_convert_loc(location.gcc_location(), ptr_type_node,
+ arg1_val);
+ arg2_val = fold_convert_loc(location.gcc_location(), ptr_type_node,
+ arg2_val);
static tree copy_fndecl;
tree call = Gogo::call_builtin(©_fndecl,
if (call == error_mark_node)
return error_mark_node;
- return fold_build2_loc(location, COMPOUND_EXPR, TREE_TYPE(len),
- call, len);
+ return fold_build2_loc(location.gcc_location(), COMPOUND_EXPR,
+ TREE_TYPE(len), call, len);
}
case BUILTIN_APPEND:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 2);
+ go_assert(args != NULL && args->size() == 2);
Expression* arg1 = args->front();
Expression* arg2 = args->back();
return error_mark_node;
Array_type* at = arg1->type()->array_type();
- Type* element_type = at->element_type();
+ Type* element_type = at->element_type()->forwarded();
- arg2_tree = Expression::convert_for_assignment(context, at,
- arg2->type(),
- arg2_tree,
- location);
- if (arg2_tree == error_mark_node)
- return error_mark_node;
+ tree arg2_val;
+ tree arg2_len;
+ tree element_size;
+ if (arg2->type()->is_string_type()
+ && element_type->integer_type() != NULL
+ && element_type->integer_type()->is_byte())
+ {
+ arg2_tree = save_expr(arg2_tree);
+ arg2_val = String_type::bytes_tree(gogo, arg2_tree);
+ arg2_len = String_type::length_tree(gogo, arg2_tree);
+ element_size = size_int(1);
+ }
+ else
+ {
+ arg2_tree = Expression::convert_for_assignment(context, at,
+ arg2->type(),
+ arg2_tree,
+ location);
+ if (arg2_tree == error_mark_node)
+ return error_mark_node;
- arg2_tree = save_expr(arg2_tree);
- tree arg2_val = at->value_pointer_tree(gogo, arg2_tree);
- tree arg2_len = at->length_tree(gogo, arg2_tree);
- if (arg2_val == error_mark_node || arg2_len == error_mark_node)
- return error_mark_node;
- arg2_val = fold_convert_loc(location, ptr_type_node, arg2_val);
- arg2_len = fold_convert_loc(location, size_type_node, arg2_len);
+ arg2_tree = save_expr(arg2_tree);
- tree element_type_tree = element_type->get_tree(gogo);
- if (element_type_tree == error_mark_node)
- return error_mark_node;
- tree element_size = TYPE_SIZE_UNIT(element_type_tree);
- element_size = fold_convert_loc(location, size_type_node,
+ arg2_val = at->value_pointer_tree(gogo, arg2_tree);
+ arg2_len = at->length_tree(gogo, arg2_tree);
+
+ Btype* element_btype = element_type->get_backend(gogo);
+ tree element_type_tree = type_to_tree(element_btype);
+ if (element_type_tree == error_mark_node)
+ return error_mark_node;
+ element_size = TYPE_SIZE_UNIT(element_type_tree);
+ }
+
+ arg2_val = fold_convert_loc(location.gcc_location(), ptr_type_node,
+ arg2_val);
+ arg2_len = fold_convert_loc(location.gcc_location(), size_type_node,
+ arg2_len);
+ element_size = fold_convert_loc(location.gcc_location(), size_type_node,
element_size);
+ if (arg2_val == error_mark_node
+ || arg2_len == error_mark_node
+ || element_size == error_mark_node)
+ return error_mark_node;
+
// We rebuild the decl each time since the slice types may
// change.
tree append_fndecl = NULL_TREE;
case BUILTIN_IMAG:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 1);
+ go_assert(args != NULL && args->size() == 1);
Expression* arg = args->front();
tree arg_tree = arg->get_tree(context);
if (arg_tree == error_mark_node)
return error_mark_node;
- gcc_assert(COMPLEX_FLOAT_TYPE_P(TREE_TYPE(arg_tree)));
+ go_assert(COMPLEX_FLOAT_TYPE_P(TREE_TYPE(arg_tree)));
if (this->code_ == BUILTIN_REAL)
- return fold_build1_loc(location, REALPART_EXPR,
+ return fold_build1_loc(location.gcc_location(), REALPART_EXPR,
TREE_TYPE(TREE_TYPE(arg_tree)),
arg_tree);
else
- return fold_build1_loc(location, IMAGPART_EXPR,
+ return fold_build1_loc(location.gcc_location(), IMAGPART_EXPR,
TREE_TYPE(TREE_TYPE(arg_tree)),
arg_tree);
}
case BUILTIN_COMPLEX:
{
const Expression_list* args = this->args();
- gcc_assert(args != NULL && args->size() == 2);
+ go_assert(args != NULL && args->size() == 2);
tree r = args->front()->get_tree(context);
tree i = args->back()->get_tree(context);
if (r == error_mark_node || i == error_mark_node)
return error_mark_node;
- gcc_assert(TYPE_MAIN_VARIANT(TREE_TYPE(r))
+ go_assert(TYPE_MAIN_VARIANT(TREE_TYPE(r))
== TYPE_MAIN_VARIANT(TREE_TYPE(i)));
- gcc_assert(SCALAR_FLOAT_TYPE_P(TREE_TYPE(r)));
- return fold_build2_loc(location, COMPLEX_EXPR,
+ go_assert(SCALAR_FLOAT_TYPE_P(TREE_TYPE(r)));
+ return fold_build2_loc(location.gcc_location(), COMPLEX_EXPR,
build_complex_type(TREE_TYPE(r)),
r, i);
}
default:
- gcc_unreachable();
+ go_unreachable();
}
}
void
Builtin_call_expression::do_export(Export* exp) const
{
- bool ok = false;
+ Numeric_constant nc;
+ if (!this->numeric_constant_value(&nc))
+ {
+ error_at(this->location(), "value is not constant");
+ return;
+ }
- mpz_t val;
- mpz_init(val);
- Type* dummy;
- if (this->integer_constant_value(true, val, &dummy))
+ if (nc.is_int())
{
+ mpz_t val;
+ nc.get_int(&val);
Integer_expression::export_integer(exp, val);
- ok = true;
+ mpz_clear(val);
}
- mpz_clear(val);
-
- if (!ok)
+ else if (nc.is_float())
{
mpfr_t fval;
- mpfr_init(fval);
- if (this->float_constant_value(fval, &dummy))
- {
- Float_expression::export_float(exp, fval);
- ok = true;
- }
+ nc.get_float(&fval);
+ Float_expression::export_float(exp, fval);
mpfr_clear(fval);
}
-
- if (!ok)
+ else if (nc.is_complex())
{
mpfr_t real;
mpfr_t imag;
- mpfr_init(real);
- mpfr_init(imag);
- if (this->complex_constant_value(real, imag, &dummy))
- {
- Complex_expression::export_complex(exp, real, imag);
- ok = true;
- }
+ Complex_expression::export_complex(exp, real, imag);
mpfr_clear(real);
mpfr_clear(imag);
}
-
- if (!ok)
- {
- error_at(this->location(), "value is not constant");
- return;
- }
+ else
+ go_unreachable();
// A trailing space lets us reliably identify the end of the number.
exp->write_c_string(" ");
// Lower a call statement.
Expression*
-Call_expression::do_lower(Gogo* gogo, Named_object* function, int)
+Call_expression::do_lower(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter, int)
{
- // A type case can look like a function call.
+ Location loc = this->location();
+
+ // A type cast can look like a function call.
if (this->fn_->is_type_expression()
&& this->args_ != NULL
&& this->args_->size() == 1)
return Expression::make_cast(this->fn_->type(), this->args_->front(),
- this->location());
+ loc);
// Recognize a call to a builtin function.
Func_expression* fne = this->fn_->func_expression();
&& fne->named_object()->is_function_declaration()
&& fne->named_object()->func_declaration_value()->type()->is_builtin())
return new Builtin_call_expression(gogo, this->fn_, this->args_,
- this->is_varargs_, this->location());
+ this->is_varargs_, loc);
// Handle an argument which is a call to a function which returns
// multiple results.
}
}
+ // If this call returns multiple results, create a temporary
+ // variable for each result.
+ size_t rc = this->result_count();
+ if (rc > 1 && this->results_ == NULL)
+ {
+ std::vector<Temporary_statement*>* temps =
+ new std::vector<Temporary_statement*>;
+ temps->reserve(rc);
+ const Typed_identifier_list* results =
+ this->fn_->type()->function_type()->results();
+ for (Typed_identifier_list::const_iterator p = results->begin();
+ p != results->end();
+ ++p)
+ {
+ Temporary_statement* temp = Statement::make_temporary(p->type(),
+ NULL, loc);
+ inserter->insert(temp);
+ temps->push_back(temp);
+ }
+ this->results_ = temps;
+ }
+
// Handle a call to a varargs function by packaging up the extra
// parameters.
if (this->fn_->type()->function_type() != NULL
{
Function_type* fntype = this->fn_->type()->function_type();
const Typed_identifier_list* parameters = fntype->parameters();
- gcc_assert(parameters != NULL && !parameters->empty());
+ go_assert(parameters != NULL && !parameters->empty());
Type* varargs_type = parameters->back().type();
- return this->lower_varargs(gogo, function, varargs_type,
- parameters->size());
+ this->lower_varargs(gogo, function, inserter, varargs_type,
+ parameters->size());
+ }
+
+ // If this is call to a method, call the method directly passing the
+ // object as the first parameter.
+ Bound_method_expression* bme = this->fn_->bound_method_expression();
+ if (bme != NULL)
+ {
+ Named_object* method = bme->method();
+ Expression* first_arg = bme->first_argument();
+
+ // We always pass a pointer when calling a method.
+ if (first_arg->type()->points_to() == NULL
+ && !first_arg->type()->is_error())
+ {
+ first_arg = Expression::make_unary(OPERATOR_AND, first_arg, loc);
+ // We may need to create a temporary variable so that we can
+ // take the address. We can't do that here because it will
+ // mess up the order of evaluation.
+ Unary_expression* ue = static_cast<Unary_expression*>(first_arg);
+ ue->set_create_temp();
+ }
+
+ // If we are calling a method which was inherited from an
+ // embedded struct, and the method did not get a stub, then the
+ // first type may be wrong.
+ Type* fatype = bme->first_argument_type();
+ if (fatype != NULL)
+ {
+ if (fatype->points_to() == NULL)
+ fatype = Type::make_pointer_type(fatype);
+ first_arg = Expression::make_unsafe_cast(fatype, first_arg, loc);
+ }
+
+ Expression_list* new_args = new Expression_list();
+ new_args->push_back(first_arg);
+ if (this->args_ != NULL)
+ {
+ for (Expression_list::const_iterator p = this->args_->begin();
+ p != this->args_->end();
+ ++p)
+ new_args->push_back(*p);
+ }
+
+ // We have to change in place because this structure may be
+ // referenced by Call_result_expressions. We can't delete the
+ // old arguments, because we may be traversing them up in some
+ // caller. FIXME.
+ this->args_ = new_args;
+ this->fn_ = Expression::make_func_reference(method, NULL,
+ bme->location());
}
return this;
// calling; the last of these parameters will be the varargs
// parameter.
-Expression*
+void
Call_expression::lower_varargs(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter,
Type* varargs_type, size_t param_count)
{
if (this->varargs_are_lowered_)
- return this;
+ return;
- source_location loc = this->location();
+ Location loc = this->location();
- gcc_assert(param_count > 0);
- gcc_assert(varargs_type->is_open_array_type());
+ go_assert(param_count > 0);
+ go_assert(varargs_type->is_slice_type());
size_t arg_count = this->args_ == NULL ? 0 : this->args_->size();
if (arg_count < param_count - 1)
{
// Not enough arguments; will be caught in check_types.
- return this;
+ return;
}
Expression_list* old_args = this->args_;
bool push_empty_arg = false;
if (old_args == NULL || old_args->empty())
{
- gcc_assert(param_count == 1);
+ go_assert(param_count == 1);
push_empty_arg = true;
}
else
else if (this->is_varargs_)
{
this->report_error(_("too many arguments"));
- return this;
+ return;
}
else
{
{
// Check types here so that we get a better message.
Type* patype = (*pa)->type();
- source_location paloc = (*pa)->location();
+ Location paloc = (*pa)->location();
if (!this->check_argument_type(i, element_type, patype,
paloc, issued_error))
continue;
}
Expression* val =
Expression::make_slice_composite_literal(varargs_type, vals, loc);
+ gogo->lower_expression(function, inserter, &val);
new_args->push_back(val);
}
}
new_args->push_back(Expression::make_nil(loc));
// We can't return a new call expression here, because this one may
- // be referenced by Call_result expressions. FIXME.
- if (old_args != NULL)
- delete old_args;
+ // be referenced by Call_result expressions. FIXME. We can't
+ // delete OLD_ARGS because we may have both a Call_expression and a
+ // Builtin_call_expression which refer to them. FIXME.
this->args_ = new_args;
this->varargs_are_lowered_ = true;
-
- // Lower all the new subexpressions.
- Expression* ret = this;
- gogo->lower_expression(function, &ret);
- gcc_assert(ret == this);
- return ret;
}
-// Get the function type. Returns NULL if we don't know the type. If
-// this returns NULL, and if_ERROR is true, issues an error.
+// Get the function type. This can return NULL in error cases.
Function_type*
Call_expression::get_function_type() const
return fntype->results()->size();
}
+// Return the temporary which holds a result.
+
+Temporary_statement*
+Call_expression::result(size_t i) const
+{
+ if (this->results_ == NULL || this->results_->size() <= i)
+ {
+ go_assert(saw_errors());
+ return NULL;
+ }
+ return (*this->results_)[i];
+}
+
// Return whether this is a call to the predeclared function recover.
bool
void
Call_expression::do_set_recover_arg(Expression*)
{
- gcc_unreachable();
+ go_unreachable();
+}
+
+// We have found an error with this call expression; return true if
+// we should report it.
+
+bool
+Call_expression::issue_error()
+{
+ if (this->issued_error_)
+ return false;
+ else
+ {
+ this->issued_error_ = true;
+ return true;
+ }
}
// Get the type.
Typed_identifier_list::const_iterator pt;
if (parameters != NULL)
pt = parameters->begin();
+ bool first = true;
for (Expression_list::const_iterator pa = this->args_->begin();
pa != this->args_->end();
++pa)
{
+ if (first)
+ {
+ first = false;
+ // If this is a method, the first argument is the
+ // receiver.
+ if (fntype != NULL && fntype->is_method())
+ {
+ Type* rtype = fntype->receiver()->type();
+ // The receiver is always passed as a pointer.
+ if (rtype->points_to() == NULL)
+ rtype = Type::make_pointer_type(rtype);
+ Type_context subcontext(rtype, false);
+ (*pa)->determine_type(&subcontext);
+ continue;
+ }
+ }
+
if (parameters != NULL && pt != parameters->end())
{
Type_context subcontext(pt->type(), false);
bool
Call_expression::check_argument_type(int i, const Type* parameter_type,
const Type* argument_type,
- source_location argument_location,
+ Location argument_location,
bool issued_error)
{
std::string reason;
- if (!Type::are_assignable(parameter_type, argument_type, &reason))
+ bool ok;
+ if (this->are_hidden_fields_ok_)
+ ok = Type::are_assignable_hidden_ok(parameter_type, argument_type,
+ &reason);
+ else
+ ok = Type::are_assignable(parameter_type, argument_type, &reason);
+ if (!ok)
{
if (!issued_error)
{
return;
}
- if (fntype->is_method())
+ bool is_method = fntype->is_method();
+ if (is_method)
{
- // We don't support pointers to methods, so the function has to
- // be a bound method expression.
- Bound_method_expression* bme = this->fn_->bound_method_expression();
- if (bme == NULL)
- {
- this->report_error(_("method call without object"));
- return;
- }
- Type* first_arg_type = bme->first_argument()->type();
- if (first_arg_type->points_to() == NULL)
+ go_assert(this->args_ != NULL && !this->args_->empty());
+ Type* rtype = fntype->receiver()->type();
+ Expression* first_arg = this->args_->front();
+ // The language permits copying hidden fields for a method
+ // receiver. We dereference the values since receivers are
+ // always passed as pointers.
+ std::string reason;
+ if (!Type::are_assignable_hidden_ok(rtype->deref(),
+ first_arg->type()->deref(),
+ &reason))
{
- // When passing a value, we need to check that we are
- // permitted to copy it.
- std::string reason;
- if (!Type::are_assignable(fntype->receiver()->type(),
- first_arg_type, &reason))
+ if (reason.empty())
+ this->report_error(_("incompatible type for receiver"));
+ else
{
- if (reason.empty())
- this->report_error(_("incompatible type for receiver"));
- else
- {
- error_at(this->location(),
- "incompatible type for receiver (%s)",
- reason.c_str());
- this->set_is_error();
- }
+ error_at(this->location(),
+ "incompatible type for receiver (%s)",
+ reason.c_str());
+ this->set_is_error();
}
}
}
this->report_error(_("not enough arguments"));
}
else if (parameters == NULL)
- this->report_error(_("too many arguments"));
+ {
+ if (!is_method || this->args_->size() > 1)
+ this->report_error(_("too many arguments"));
+ }
else
{
int i = 0;
- Typed_identifier_list::const_iterator pt = parameters->begin();
- for (Expression_list::const_iterator pa = this->args_->begin();
- pa != this->args_->end();
- ++pa, ++pt, ++i)
- {
- if (pt == parameters->end())
+ Expression_list::const_iterator pa = this->args_->begin();
+ if (is_method)
+ ++pa;
+ for (Typed_identifier_list::const_iterator pt = parameters->begin();
+ pt != parameters->end();
+ ++pt, ++pa, ++i)
+ {
+ if (pa == this->args_->end())
{
- this->report_error(_("too many arguments"));
+ this->report_error(_("not enough arguments"));
return;
}
this->check_argument_type(i + 1, pt->type(), (*pa)->type(),
(*pa)->location(), false);
}
- if (pt != parameters->end())
- this->report_error(_("not enough arguments"));
+ if (pa != this->args_->end())
+ this->report_error(_("too many arguments"));
}
}
// Return whether we have to use a temporary variable to ensure that
// we evaluate this call expression in order. If the call returns no
-// results then it will inevitably be executed last. If the call
-// returns more than one result then it will be used with Call_result
-// expressions. So we only have to use a temporary variable if the
-// call returns exactly one result.
+// results then it will inevitably be executed last.
bool
Call_expression::do_must_eval_in_order() const
{
- return this->result_count() == 1;
-}
-
-// Get the function and the first argument to use when calling a bound
-// method.
-
-tree
-Call_expression::bound_method_function(Translate_context* context,
- Bound_method_expression* bound_method,
- tree* first_arg_ptr)
-{
- Expression* first_argument = bound_method->first_argument();
- tree first_arg = first_argument->get_tree(context);
- if (first_arg == error_mark_node)
- return error_mark_node;
-
- // We always pass a pointer to the first argument when calling a
- // method.
- if (first_argument->type()->points_to() == NULL)
- {
- tree pointer_to_arg_type = build_pointer_type(TREE_TYPE(first_arg));
- if (TREE_ADDRESSABLE(TREE_TYPE(first_arg))
- || DECL_P(first_arg)
- || TREE_CODE(first_arg) == INDIRECT_REF
- || TREE_CODE(first_arg) == COMPONENT_REF)
- {
- first_arg = build_fold_addr_expr(first_arg);
- if (DECL_P(first_arg))
- TREE_ADDRESSABLE(first_arg) = 1;
- }
- else
- {
- tree tmp = create_tmp_var(TREE_TYPE(first_arg),
- get_name(first_arg));
- DECL_IGNORED_P(tmp) = 0;
- DECL_INITIAL(tmp) = first_arg;
- first_arg = build2(COMPOUND_EXPR, pointer_to_arg_type,
- build1(DECL_EXPR, void_type_node, tmp),
- build_fold_addr_expr(tmp));
- TREE_ADDRESSABLE(tmp) = 1;
- }
- if (first_arg == error_mark_node)
- return error_mark_node;
- }
-
- Type* fatype = bound_method->first_argument_type();
- if (fatype != NULL)
- {
- if (fatype->points_to() == NULL)
- fatype = Type::make_pointer_type(fatype);
- first_arg = fold_convert(fatype->get_tree(context->gogo()), first_arg);
- if (first_arg == error_mark_node
- || TREE_TYPE(first_arg) == error_mark_node)
- return error_mark_node;
- }
-
- *first_arg_ptr = first_arg;
-
- return bound_method->method()->get_tree(context);
+ return this->result_count() > 0;
}
// Get the function and the first argument to use when calling an
return error_mark_node;
Gogo* gogo = context->gogo();
- source_location location = this->location();
+ Location location = this->location();
Func_expression* func = this->fn_->func_expression();
- Bound_method_expression* bound_method = this->fn_->bound_method_expression();
Interface_field_reference_expression* interface_method =
this->fn_->interface_field_reference_expression();
const bool has_closure = func != NULL && func->closure() != NULL;
- const bool is_method = bound_method != NULL || interface_method != NULL;
- gcc_assert(!fntype->is_method() || is_method);
+ const bool is_interface_method = interface_method != NULL;
int nargs;
tree* args;
if (this->args_ == NULL || this->args_->empty())
{
- nargs = is_method ? 1 : 0;
+ nargs = is_interface_method ? 1 : 0;
args = nargs == 0 ? NULL : new tree[nargs];
}
+ else if (fntype->parameters() == NULL || fntype->parameters()->empty())
+ {
+ // Passing a receiver parameter.
+ go_assert(!is_interface_method
+ && fntype->is_method()
+ && this->args_->size() == 1);
+ nargs = 1;
+ args = new tree[nargs];
+ args[0] = this->args_->front()->get_tree(context);
+ }
else
{
const Typed_identifier_list* params = fntype->parameters();
- gcc_assert(params != NULL);
nargs = this->args_->size();
- int i = is_method ? 1 : 0;
+ int i = is_interface_method ? 1 : 0;
nargs += i;
args = new tree[nargs];
Typed_identifier_list::const_iterator pp = params->begin();
- Expression_list::const_iterator pe;
- for (pe = this->args_->begin();
- pe != this->args_->end();
- ++pe, ++pp, ++i)
+ Expression_list::const_iterator pe = this->args_->begin();
+ if (!is_interface_method && fntype->is_method())
{
- gcc_assert(pp != params->end());
+ args[i] = (*pe)->get_tree(context);
+ ++pe;
+ ++i;
+ }
+ for (; pe != this->args_->end(); ++pe, ++pp, ++i)
+ {
+ go_assert(pp != params->end());
tree arg_val = (*pe)->get_tree(context);
args[i] = Expression::convert_for_assignment(context,
pp->type(),
return error_mark_node;
}
}
- gcc_assert(pp == params->end());
- gcc_assert(i == nargs);
+ go_assert(pp == params->end());
+ go_assert(i == nargs);
}
- tree rettype = TREE_TYPE(TREE_TYPE(fntype->get_tree(gogo)));
+ tree rettype = TREE_TYPE(TREE_TYPE(type_to_tree(fntype->get_backend(gogo))));
if (rettype == error_mark_node)
{
delete[] args;
tree fn;
if (has_closure)
fn = func->get_tree_without_closure(gogo);
- else if (!is_method)
+ else if (!is_interface_method)
fn = this->fn_->get_tree(context);
- else if (bound_method != NULL)
- fn = this->bound_method_function(context, bound_method, &args[0]);
- else if (interface_method != NULL)
- fn = this->interface_method_function(context, interface_method, &args[0]);
else
- gcc_unreachable();
+ fn = this->interface_method_function(context, interface_method, &args[0]);
if (fn == error_mark_node || TREE_TYPE(fn) == error_mark_node)
{
// type which refers to itself.
if (!DECL_P(fndecl) || !DECL_IS_BUILTIN(fndecl))
{
- tree fnt = fntype->get_tree(gogo);
+ tree fnt = type_to_tree(fntype->get_backend(gogo));
if (fnt == error_mark_node)
return error_mark_node;
- fn = fold_convert_loc(location, fnt, fn);
+ fn = fold_convert_loc(location.gcc_location(), fnt, fn);
}
// This is to support builtin math functions when using 80387 math.
tree excess_type = NULL_TREE;
- if (DECL_P(fndecl)
+ if (optimize
+ && TREE_CODE(fndecl) == FUNCTION_DECL
&& DECL_IS_BUILTIN(fndecl)
&& DECL_BUILT_IN_CLASS(fndecl) == BUILT_IN_NORMAL
&& nargs > 0
excess_type = NULL_TREE;
else
{
- fn = build_fold_addr_expr_loc(location, excess_fndecl);
+ fn = build_fold_addr_expr_loc(location.gcc_location(),
+ excess_fndecl);
for (int i = 0; i < nargs; ++i)
- args[i] = ::convert(excess_type, args[i]);
+ {
+ if (SCALAR_FLOAT_TYPE_P(TREE_TYPE(args[i]))
+ || COMPLEX_FLOAT_TYPE_P(TREE_TYPE(args[i])))
+ args[i] = ::convert(excess_type, args[i]);
+ }
}
}
}
fn, nargs, args);
delete[] args;
- SET_EXPR_LOCATION(ret, location);
+ SET_EXPR_LOCATION(ret, location.gcc_location());
if (has_closure)
{
// to the correct type.
if (TREE_TYPE(ret) == ptr_type_node)
{
- tree t = this->type()->base()->get_tree(gogo);
- ret = fold_convert_loc(location, t, ret);
+ tree t = type_to_tree(this->type()->base()->get_backend(gogo));
+ ret = fold_convert_loc(location.gcc_location(), t, ret);
}
if (excess_type != NULL_TREE)
ret = build1(NOP_EXPR, rettype, ret);
}
- // If there is more than one result, we will refer to the call
- // multiple times.
- if (fntype->results() != NULL && fntype->results()->size() > 1)
- ret = save_expr(ret);
+ if (this->results_ != NULL)
+ ret = this->set_results(context, ret);
this->tree_ = ret;
return ret;
}
+// Set the result variables if this call returns multiple results.
+
+tree
+Call_expression::set_results(Translate_context* context, tree call_tree)
+{
+ tree stmt_list = NULL_TREE;
+
+ call_tree = save_expr(call_tree);
+
+ if (TREE_CODE(TREE_TYPE(call_tree)) != RECORD_TYPE)
+ {
+ go_assert(saw_errors());
+ return call_tree;
+ }
+
+ Location loc = this->location();
+ tree field = TYPE_FIELDS(TREE_TYPE(call_tree));
+ size_t rc = this->result_count();
+ for (size_t i = 0; i < rc; ++i, field = DECL_CHAIN(field))
+ {
+ go_assert(field != NULL_TREE);
+
+ Temporary_statement* temp = this->result(i);
+ if (temp == NULL)
+ {
+ go_assert(saw_errors());
+ return error_mark_node;
+ }
+ Temporary_reference_expression* ref =
+ Expression::make_temporary_reference(temp, loc);
+ ref->set_is_lvalue();
+ tree temp_tree = ref->get_tree(context);
+ if (temp_tree == error_mark_node)
+ continue;
+
+ tree val_tree = build3_loc(loc.gcc_location(), COMPONENT_REF,
+ TREE_TYPE(field), call_tree, field, NULL_TREE);
+ tree set_tree = build2_loc(loc.gcc_location(), MODIFY_EXPR,
+ void_type_node, temp_tree, val_tree);
+
+ append_to_statement_list(set_tree, &stmt_list);
+ }
+ go_assert(field == NULL_TREE);
+
+ return save_expr(stmt_list);
+}
+
+// Dump ast representation for a call expressin.
+
+void
+Call_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ this->fn_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << "(";
+ if (args_ != NULL)
+ ast_dump_context->dump_expression_list(this->args_);
+
+ ast_dump_context->ostream() << ") ";
+}
+
// Make a call expression.
Call_expression*
Expression::make_call(Expression* fn, Expression_list* args, bool is_varargs,
- source_location location)
+ Location location)
{
return new Call_expression(fn, args, is_varargs, location);
}
tree
do_get_tree(Translate_context*);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The underlying call expression.
Expression* call_;
Function_type* fntype = ce->get_function_type();
if (fntype == NULL)
{
+ if (ce->issue_error())
+ {
+ if (!ce->fn()->type()->is_error())
+ this->report_error(_("expected function"));
+ }
this->set_is_error();
return Type::make_error_type();
}
const Typed_identifier_list* results = fntype->results();
- if (results == NULL)
+ if (results == NULL || results->size() < 2)
{
- this->report_error(_("number of results does not match "
- "number of values"));
+ if (ce->issue_error())
+ this->report_error(_("number of results does not match "
+ "number of values"));
return Type::make_error_type();
}
Typed_identifier_list::const_iterator pr = results->begin();
}
if (pr == results->end())
{
- this->report_error(_("number of results does not match "
- "number of values"));
+ if (ce->issue_error())
+ this->report_error(_("number of results does not match "
+ "number of values"));
return Type::make_error_type();
}
return pr->type();
this->call_->determine_type_no_context();
}
-// Return the tree.
+// Return the tree. We just refer to the temporary set by the call
+// expression. We don't do this at lowering time because it makes it
+// hard to evaluate the call at the right time.
tree
Call_result_expression::do_get_tree(Translate_context* context)
{
- tree call_tree = this->call_->get_tree(context);
- if (call_tree == error_mark_node)
- return error_mark_node;
- if (TREE_CODE(TREE_TYPE(call_tree)) != RECORD_TYPE)
+ Call_expression* ce = this->call_->call_expression();
+ if (ce == NULL)
{
- gcc_assert(saw_errors());
+ go_assert(this->call_->is_error_expression());
return error_mark_node;
}
- tree field = TYPE_FIELDS(TREE_TYPE(call_tree));
- for (unsigned int i = 0; i < this->index_; ++i)
+ Temporary_statement* ts = ce->result(this->index_);
+ if (ts == NULL)
{
- gcc_assert(field != NULL_TREE);
- field = DECL_CHAIN(field);
+ go_assert(saw_errors());
+ return error_mark_node;
}
- gcc_assert(field != NULL_TREE);
- return build3(COMPONENT_REF, TREE_TYPE(field), call_tree, field, NULL_TREE);
+ Expression* ref = Expression::make_temporary_reference(ts, this->location());
+ return ref->get_tree(context);
}
-// Make a reference to a single result of a call which returns
+// Dump ast representation for a call result expression.
+
+void
+Call_result_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ // FIXME: Wouldn't it be better if the call is assigned to a temporary
+ // (struct) and the fields are referenced instead.
+ ast_dump_context->ostream() << this->index_ << "@(";
+ ast_dump_context->dump_expression(this->call_);
+ ast_dump_context->ostream() << ")";
+}
+
+// Make a reference to a single result of a call which returns
// multiple results.
Expression*
// expression into an array index, a string index, or a map index.
Expression*
-Index_expression::do_lower(Gogo*, Named_object*, int)
+Index_expression::do_lower(Gogo*, Named_object*, Statement_inserter*, int)
{
- source_location location = this->location();
+ Location location = this->location();
Expression* left = this->left_;
Expression* start = this->start_;
Expression* end = this->end_;
return Expression::make_array_index(left, start, end, location);
else if (type->points_to() != NULL
&& type->points_to()->array_type() != NULL
- && !type->points_to()->is_open_array_type())
+ && !type->points_to()->is_slice_type())
{
Expression* deref = Expression::make_unary(OPERATOR_MULT, left,
location);
error_at(location, "invalid slice of map");
return Expression::make_error(location);
}
- Map_index_expression* ret= Expression::make_map_index(left, start,
- location);
+ Map_index_expression* ret = Expression::make_map_index(left, start,
+ location);
if (this->is_lvalue_)
ret->set_is_lvalue();
return ret;
}
}
+// Write an indexed expression (expr[expr:expr] or expr[expr]) to a
+// dump context
+
+void
+Index_expression::dump_index_expression(Ast_dump_context* ast_dump_context,
+ const Expression* expr,
+ const Expression* start,
+ const Expression* end)
+{
+ expr->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << "[";
+ start->dump_expression(ast_dump_context);
+ if (end != NULL)
+ {
+ ast_dump_context->ostream() << ":";
+ end->dump_expression(ast_dump_context);
+ }
+ ast_dump_context->ostream() << "]";
+}
+
+// Dump ast representation for an index expression.
+
+void
+Index_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ Index_expression::dump_index_expression(ast_dump_context, this->left_,
+ this->start_, this->end_);
+}
+
// Make an index expression.
Expression*
Expression::make_index(Expression* left, Expression* start, Expression* end,
- source_location location)
+ Location location)
{
return new Index_expression(left, start, end, location);
}
{
public:
Array_index_expression(Expression* array, Expression* start,
- Expression* end, source_location location)
+ Expression* end, Location location)
: Expression(EXPRESSION_ARRAY_INDEX, location),
array_(array), start_(start), end_(end), type_(NULL)
{ }
}
bool
+ do_must_eval_subexpressions_in_order(int* skip) const
+ {
+ *skip = 1;
+ return true;
+ }
+
+ bool
do_is_addressable() const;
void
tree
do_get_tree(Translate_context*);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The array we are getting a value from.
Expression* array_;
this->type_ = Type::make_error_type();
else if (this->end_ == NULL)
this->type_ = type->element_type();
- else if (type->is_open_array_type())
+ else if (type->is_slice_type())
{
// A slice of a slice has the same type as the original
// slice.
this->report_error(_("index must be integer"));
if (this->end_ != NULL
&& this->end_->type()->integer_type() == NULL
- && !this->end_->is_nil_expression())
+ && !this->end_->type()->is_error()
+ && !this->end_->is_nil_expression()
+ && !this->end_->is_error_expression())
this->report_error(_("slice end must be integer"));
Array_type* array_type = this->array_->type()->array_type();
if (array_type == NULL)
{
- gcc_assert(this->array_->type()->is_error());
+ go_assert(this->array_->type()->is_error());
return;
}
unsigned int int_bits =
Type::lookup_integer_type("int")->integer_type()->bits();
- Type* dummy;
+ Numeric_constant lvalnc;
mpz_t lval;
- mpz_init(lval);
bool lval_valid = (array_type->length() != NULL
- && array_type->length()->integer_constant_value(true,
- lval,
- &dummy));
+ && array_type->length()->numeric_constant_value(&lvalnc)
+ && lvalnc.to_int(&lval));
+ Numeric_constant inc;
mpz_t ival;
- mpz_init(ival);
- if (this->start_->integer_constant_value(true, ival, &dummy))
+ if (this->start_->numeric_constant_value(&inc) && inc.to_int(&ival))
{
if (mpz_sgn(ival) < 0
|| mpz_sizeinbase(ival, 2) >= int_bits
error_at(this->start_->location(), "array index out of bounds");
this->set_is_error();
}
+ mpz_clear(ival);
}
if (this->end_ != NULL && !this->end_->is_nil_expression())
{
- if (this->end_->integer_constant_value(true, ival, &dummy))
+ Numeric_constant enc;
+ mpz_t eval;
+ if (this->end_->numeric_constant_value(&enc) && enc.to_int(&eval))
{
- if (mpz_sgn(ival) < 0
- || mpz_sizeinbase(ival, 2) >= int_bits
- || (lval_valid && mpz_cmp(ival, lval) > 0))
+ if (mpz_sgn(eval) < 0
+ || mpz_sizeinbase(eval, 2) >= int_bits
+ || (lval_valid && mpz_cmp(eval, lval) > 0))
{
error_at(this->end_->location(), "array index out of bounds");
this->set_is_error();
}
+ mpz_clear(eval);
}
}
- mpz_clear(ival);
- mpz_clear(lval);
+ if (lval_valid)
+ mpz_clear(lval);
// A slice of an array requires an addressable array. A slice of a
// slice is always possible.
- if (this->end_ != NULL
- && !array_type->is_open_array_type()
- && !this->array_->is_addressable())
- this->report_error(_("array is not addressable"));
+ if (this->end_ != NULL && !array_type->is_slice_type())
+ {
+ if (!this->array_->is_addressable())
+ this->report_error(_("slice of unaddressable value"));
+ else
+ this->array_->address_taken(true);
+ }
}
// Return whether this expression is addressable.
return false;
// An index into a slice is addressable.
- if (this->array_->type()->is_open_array_type())
+ if (this->array_->type()->is_slice_type())
return true;
// An index into an array is addressable if the array is
Array_index_expression::do_get_tree(Translate_context* context)
{
Gogo* gogo = context->gogo();
- source_location loc = this->location();
+ Location loc = this->location();
Array_type* array_type = this->array_->type()->array_type();
if (array_type == NULL)
{
- gcc_assert(this->array_->type()->is_error());
+ go_assert(this->array_->type()->is_error());
return error_mark_node;
}
- tree type_tree = array_type->get_tree(gogo);
+ tree type_tree = type_to_tree(array_type->get_backend(gogo));
if (type_tree == error_mark_node)
return error_mark_node;
if (array_type->length() == NULL && !DECL_P(array_tree))
array_tree = save_expr(array_tree);
- tree length_tree = array_type->length_tree(gogo, array_tree);
- if (length_tree == error_mark_node)
- return error_mark_node;
- length_tree = save_expr(length_tree);
- tree length_type = TREE_TYPE(length_tree);
+
+ tree length_tree = NULL_TREE;
+ if (this->end_ == NULL || this->end_->is_nil_expression())
+ {
+ length_tree = array_type->length_tree(gogo, array_tree);
+ if (length_tree == error_mark_node)
+ return error_mark_node;
+ length_tree = save_expr(length_tree);
+ }
+
+ tree capacity_tree = NULL_TREE;
+ if (this->end_ != NULL)
+ {
+ capacity_tree = array_type->capacity_tree(gogo, array_tree);
+ if (capacity_tree == error_mark_node)
+ return error_mark_node;
+ capacity_tree = save_expr(capacity_tree);
+ }
+
+ tree length_type = (length_tree != NULL_TREE
+ ? TREE_TYPE(length_tree)
+ : TREE_TYPE(capacity_tree));
tree bad_index = boolean_false_node;
bad_index = Expression::check_bounds(start_tree, length_type, bad_index,
loc);
- start_tree = fold_convert_loc(loc, length_type, start_tree);
- bad_index = fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node, bad_index,
- fold_build2_loc(loc,
+ start_tree = fold_convert_loc(loc.gcc_location(), length_type, start_tree);
+ bad_index = fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR,
+ boolean_type_node, bad_index,
+ fold_build2_loc(loc.gcc_location(),
(this->end_ == NULL
? GE_EXPR
: GT_EXPR),
boolean_type_node, start_tree,
- length_tree));
+ (this->end_ == NULL
+ ? length_tree
+ : capacity_tree)));
int code = (array_type->length() != NULL
? (this->end_ == NULL
build3(COND_EXPR, void_type_node,
bad_index, crash, NULL_TREE),
start_tree);
- start_tree = fold_convert_loc(loc, sizetype, start_tree);
+ start_tree = fold_convert_loc(loc.gcc_location(), sizetype, start_tree);
if (array_type->length() != NULL)
{
{
// Open array.
tree values = array_type->value_pointer_tree(gogo, array_tree);
- tree element_type_tree = array_type->element_type()->get_tree(gogo);
+ Type* element_type = array_type->element_type();
+ Btype* belement_type = element_type->get_backend(gogo);
+ tree element_type_tree = type_to_tree(belement_type);
if (element_type_tree == error_mark_node)
return error_mark_node;
tree element_size = TYPE_SIZE_UNIT(element_type_tree);
- tree offset = fold_build2_loc(loc, MULT_EXPR, sizetype,
+ tree offset = fold_build2_loc(loc.gcc_location(), MULT_EXPR, sizetype,
start_tree, element_size);
- tree ptr = fold_build2_loc(loc, POINTER_PLUS_EXPR,
+ tree ptr = fold_build2_loc(loc.gcc_location(), POINTER_PLUS_EXPR,
TREE_TYPE(values), values, offset);
return build_fold_indirect_ref(ptr);
}
// Array slice.
- tree capacity_tree = array_type->capacity_tree(gogo, array_tree);
- if (capacity_tree == error_mark_node)
- return error_mark_node;
- capacity_tree = fold_convert_loc(loc, length_type, capacity_tree);
-
tree end_tree;
if (this->end_->is_nil_expression())
end_tree = length_tree;
bad_index = Expression::check_bounds(end_tree, length_type, bad_index,
loc);
- end_tree = fold_convert_loc(loc, length_type, end_tree);
+ end_tree = fold_convert_loc(loc.gcc_location(), length_type, end_tree);
- capacity_tree = save_expr(capacity_tree);
- tree bad_end = fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node,
- fold_build2_loc(loc, LT_EXPR,
- boolean_type_node,
+ tree bad_end = fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR,
+ boolean_type_node,
+ fold_build2_loc(loc.gcc_location(),
+ LT_EXPR, boolean_type_node,
end_tree, start_tree),
- fold_build2_loc(loc, GT_EXPR,
- boolean_type_node,
+ fold_build2_loc(loc.gcc_location(),
+ GT_EXPR, boolean_type_node,
end_tree, capacity_tree));
- bad_index = fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node,
- bad_index, bad_end);
+ bad_index = fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR,
+ boolean_type_node, bad_index, bad_end);
}
- tree element_type_tree = array_type->element_type()->get_tree(gogo);
+ Type* element_type = array_type->element_type();
+ tree element_type_tree = type_to_tree(element_type->get_backend(gogo));
if (element_type_tree == error_mark_node)
return error_mark_node;
tree element_size = TYPE_SIZE_UNIT(element_type_tree);
- tree offset = fold_build2_loc(loc, MULT_EXPR, sizetype,
- fold_convert_loc(loc, sizetype, start_tree),
+ tree offset = fold_build2_loc(loc.gcc_location(), MULT_EXPR, sizetype,
+ fold_convert_loc(loc.gcc_location(), sizetype,
+ start_tree),
element_size);
tree value_pointer = array_type->value_pointer_tree(gogo, array_tree);
if (value_pointer == error_mark_node)
return error_mark_node;
- value_pointer = fold_build2_loc(loc, POINTER_PLUS_EXPR,
+ value_pointer = fold_build2_loc(loc.gcc_location(), POINTER_PLUS_EXPR,
TREE_TYPE(value_pointer),
value_pointer, offset);
- tree result_length_tree = fold_build2_loc(loc, MINUS_EXPR, length_type,
- end_tree, start_tree);
+ tree result_length_tree = fold_build2_loc(loc.gcc_location(), MINUS_EXPR,
+ length_type, end_tree, start_tree);
- tree result_capacity_tree = fold_build2_loc(loc, MINUS_EXPR, length_type,
- capacity_tree, start_tree);
+ tree result_capacity_tree = fold_build2_loc(loc.gcc_location(), MINUS_EXPR,
+ length_type, capacity_tree,
+ start_tree);
- tree struct_tree = this->type()->get_tree(gogo);
- gcc_assert(TREE_CODE(struct_tree) == RECORD_TYPE);
+ tree struct_tree = type_to_tree(this->type()->get_backend(gogo));
+ go_assert(TREE_CODE(struct_tree) == RECORD_TYPE);
VEC(constructor_elt,gc)* init = VEC_alloc(constructor_elt, gc, 3);
constructor_elt* elt = VEC_quick_push(constructor_elt, init, NULL);
tree field = TYPE_FIELDS(struct_tree);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__values") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__values") == 0);
elt->index = field;
elt->value = value_pointer;
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__count") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__count") == 0);
elt->index = field;
- elt->value = fold_convert_loc(loc, TREE_TYPE(field), result_length_tree);
+ elt->value = fold_convert_loc(loc.gcc_location(), TREE_TYPE(field),
+ result_length_tree);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__capacity") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__capacity") == 0);
elt->index = field;
- elt->value = fold_convert_loc(loc, TREE_TYPE(field), result_capacity_tree);
+ elt->value = fold_convert_loc(loc.gcc_location(), TREE_TYPE(field),
+ result_capacity_tree);
tree constructor = build_constructor(struct_tree, init);
&& TREE_CONSTANT(result_capacity_tree))
TREE_CONSTANT(constructor) = 1;
- return fold_build2_loc(loc, COMPOUND_EXPR, TREE_TYPE(constructor),
+ return fold_build2_loc(loc.gcc_location(), COMPOUND_EXPR,
+ TREE_TYPE(constructor),
build3(COND_EXPR, void_type_node,
bad_index, crash, NULL_TREE),
constructor);
}
+// Dump ast representation for an array index expression.
+
+void
+Array_index_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ Index_expression::dump_index_expression(ast_dump_context, this->array_,
+ this->start_, this->end_);
+}
+
// Make an array index expression. END may be NULL.
Expression*
Expression::make_array_index(Expression* array, Expression* start,
- Expression* end, source_location location)
+ Expression* end, Location location)
{
- // Taking a slice of a composite literal requires moving the literal
- // onto the heap.
- if (end != NULL && array->is_composite_literal())
- {
- array = Expression::make_heap_composite(array, location);
- array = Expression::make_unary(OPERATOR_MULT, array, location);
- }
return new Array_index_expression(array, start, end, location);
}
{
public:
String_index_expression(Expression* string, Expression* start,
- Expression* end, source_location location)
+ Expression* end, Location location)
: Expression(EXPRESSION_STRING_INDEX, location),
string_(string), start_(start), end_(end)
{ }
this->location());
}
+ bool
+ do_must_eval_subexpressions_in_order(int* skip) const
+ {
+ *skip = 1;
+ return true;
+ }
+
tree
do_get_tree(Translate_context*);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The string we are getting a value from.
Expression* string_;
std::string sval;
bool sval_valid = this->string_->string_constant_value(&sval);
+ Numeric_constant inc;
mpz_t ival;
- mpz_init(ival);
- Type* dummy;
- if (this->start_->integer_constant_value(true, ival, &dummy))
+ if (this->start_->numeric_constant_value(&inc) && inc.to_int(&ival))
{
if (mpz_sgn(ival) < 0
|| (sval_valid && mpz_cmp_ui(ival, sval.length()) >= 0))
error_at(this->start_->location(), "string index out of bounds");
this->set_is_error();
}
+ mpz_clear(ival);
}
if (this->end_ != NULL && !this->end_->is_nil_expression())
{
- if (this->end_->integer_constant_value(true, ival, &dummy))
+ Numeric_constant enc;
+ mpz_t eval;
+ if (this->end_->numeric_constant_value(&enc) && enc.to_int(&eval))
{
- if (mpz_sgn(ival) < 0
- || (sval_valid && mpz_cmp_ui(ival, sval.length()) > 0))
+ if (mpz_sgn(eval) < 0
+ || (sval_valid && mpz_cmp_ui(eval, sval.length()) > 0))
{
error_at(this->end_->location(), "string index out of bounds");
this->set_is_error();
}
+ mpz_clear(eval);
}
}
- mpz_clear(ival);
}
// Get a tree for a string index.
tree
String_index_expression::do_get_tree(Translate_context* context)
{
- source_location loc = this->location();
+ Location loc = this->location();
tree string_tree = this->string_->get_tree(context);
if (string_tree == error_mark_node)
bad_index = Expression::check_bounds(start_tree, length_type, bad_index,
loc);
- start_tree = fold_convert_loc(loc, length_type, start_tree);
+ start_tree = fold_convert_loc(loc.gcc_location(), length_type, start_tree);
int code = (this->end_ == NULL
? RUNTIME_ERROR_STRING_INDEX_OUT_OF_BOUNDS
if (this->end_ == NULL)
{
- bad_index = fold_build2_loc(loc, TRUTH_OR_EXPR, boolean_type_node,
- bad_index,
- fold_build2_loc(loc, GE_EXPR,
+ bad_index = fold_build2_loc(loc.gcc_location(), TRUTH_OR_EXPR,
+ boolean_type_node, bad_index,
+ fold_build2_loc(loc.gcc_location(), GE_EXPR,
boolean_type_node,
start_tree, length_tree));
tree bytes_tree = String_type::bytes_tree(context->gogo(), string_tree);
- tree ptr = fold_build2_loc(loc, POINTER_PLUS_EXPR, TREE_TYPE(bytes_tree),
+ tree ptr = fold_build2_loc(loc.gcc_location(), POINTER_PLUS_EXPR,
+ TREE_TYPE(bytes_tree),
bytes_tree,
- fold_convert_loc(loc, sizetype, start_tree));
- tree index = build_fold_indirect_ref_loc(loc, ptr);
+ fold_convert_loc(loc.gcc_location(), sizetype,
+ start_tree));
+ tree index = build_fold_indirect_ref_loc(loc.gcc_location(), ptr);
return build2(COMPOUND_EXPR, TREE_TYPE(index),
build3(COND_EXPR, void_type_node,
bad_index = Expression::check_bounds(end_tree, length_type,
bad_index, loc);
- end_tree = fold_convert_loc(loc, length_type, end_tree);
+ end_tree = fold_convert_loc(loc.gcc_location(), length_type,
+ end_tree);
}
static tree strslice_fndecl;
}
}
+// Dump ast representation for a string index expression.
+
+void
+String_index_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ Index_expression::dump_index_expression(ast_dump_context, this->string_,
+ this->start_, this->end_);
+}
+
// Make a string index expression. END may be NULL.
Expression*
Expression::make_string_index(Expression* string, Expression* start,
- Expression* end, source_location location)
+ Expression* end, Location location)
{
return new String_index_expression(string, start, end, location);
}
{
Map_type* mt = this->map_->type()->deref()->map_type();
if (mt == NULL)
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return mt;
}
}
else
{
+ Gogo* gogo = context->gogo();
+ Btype* val_btype = type->val_type()->get_backend(gogo);
+ Bexpression* val_zero = gogo->backend()->zero_expression(val_btype);
return fold_build3(COND_EXPR, val_type_tree,
fold_build2(EQ_EXPR, boolean_type_node, valptr,
fold_convert(TREE_TYPE(valptr),
null_pointer_node)),
- type->val_type()->get_init_tree(context->gogo(),
- false),
+ expr_to_tree(val_zero),
build_fold_indirect_ref(valptr));
}
}
}
else
{
- tmp = build_decl(this->location(), VAR_DECL, create_tmp_var_name("M"),
+ tmp = build_decl(this->location().gcc_location(), VAR_DECL,
+ create_tmp_var_name("M"),
TREE_TYPE(index_tree));
DECL_EXTERNAL(tmp) = 0;
TREE_PUBLIC(tmp) = 0;
TREE_STATIC(tmp) = 1;
DECL_ARTIFICIAL(tmp) = 1;
if (!TREE_CONSTANT(index_tree))
- make_tmp = fold_build2_loc(this->location(), INIT_EXPR, void_type_node,
+ make_tmp = fold_build2_loc(this->location().gcc_location(),
+ INIT_EXPR, void_type_node,
tmp, index_tree);
else
{
}
rest_of_decl_compilation(tmp, 1, 0);
}
- tree tmpref = fold_convert_loc(this->location(), const_ptr_type_node,
- build_fold_addr_expr_loc(this->location(),
- tmp));
+ tree tmpref =
+ fold_convert_loc(this->location().gcc_location(), const_ptr_type_node,
+ build_fold_addr_expr_loc(this->location().gcc_location(),
+ tmp));
static tree map_index_fndecl;
tree call = Gogo::call_builtin(&map_index_fndecl,
// an uncomparable or unhashable type.
TREE_NOTHROW(map_index_fndecl) = 0;
- tree val_type_tree = type->val_type()->get_tree(context->gogo());
+ Type* val_type = type->val_type();
+ tree val_type_tree = type_to_tree(val_type->get_backend(context->gogo()));
if (val_type_tree == error_mark_node)
return error_mark_node;
tree ptr_val_type_tree = build_pointer_type(val_type_tree);
- tree ret = fold_convert_loc(this->location(), ptr_val_type_tree, call);
+ tree ret = fold_convert_loc(this->location().gcc_location(),
+ ptr_val_type_tree, call);
if (make_tmp != NULL_TREE)
ret = build2(COMPOUND_EXPR, ptr_val_type_tree, make_tmp, ret);
return ret;
}
+// Dump ast representation for a map index expression
+
+void
+Map_index_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ Index_expression::dump_index_expression(ast_dump_context,
+ this->map_, this->index_, NULL);
+}
+
// Make a map index expression.
Map_index_expression*
Expression::make_map_index(Expression* map, Expression* index,
- source_location location)
+ Location location)
{
return new Map_index_expression(map, index, location);
}
if (type->is_error())
return type;
Struct_type* struct_type = type->struct_type();
- gcc_assert(struct_type != NULL);
+ go_assert(struct_type != NULL);
return struct_type->field(this->field_index_)->type();
}
if (type->is_error())
return;
Struct_type* struct_type = type->struct_type();
- gcc_assert(struct_type != NULL);
- gcc_assert(struct_type->field(this->field_index_) != NULL);
+ go_assert(struct_type != NULL);
+ go_assert(struct_type->field(this->field_index_) != NULL);
}
// Get a tree for a field reference.
if (struct_tree == error_mark_node
|| TREE_TYPE(struct_tree) == error_mark_node)
return error_mark_node;
- gcc_assert(TREE_CODE(TREE_TYPE(struct_tree)) == RECORD_TYPE);
+ go_assert(TREE_CODE(TREE_TYPE(struct_tree)) == RECORD_TYPE);
tree field = TYPE_FIELDS(TREE_TYPE(struct_tree));
if (field == NULL_TREE)
{
// This can happen for a type which refers to itself indirectly
// and then turns out to be erroneous.
- gcc_assert(saw_errors());
+ go_assert(saw_errors());
return error_mark_node;
}
for (unsigned int i = this->field_index_; i > 0; --i)
{
field = DECL_CHAIN(field);
- gcc_assert(field != NULL_TREE);
+ go_assert(field != NULL_TREE);
}
if (TREE_TYPE(field) == error_mark_node)
return error_mark_node;
NULL_TREE);
}
+// Dump ast representation for a field reference expression.
+
+void
+Field_reference_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ this->expr_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << "." << this->field_index_;
+}
+
// Make a reference to a qualified identifier in an expression.
Field_reference_expression*
Expression::make_field_reference(Expression* expr, unsigned int field_index,
- source_location location)
+ Location location)
{
return new Field_reference_expression(expr, field_index, location);
}
expr = build_fold_indirect_ref(expr);
tree expr_type = TREE_TYPE(expr);
- gcc_assert(TREE_CODE(expr_type) == RECORD_TYPE);
+ go_assert(TREE_CODE(expr_type) == RECORD_TYPE);
tree field = TYPE_FIELDS(expr_type);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__methods") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__methods") == 0);
tree table = build3(COMPONENT_REF, TREE_TYPE(field), expr, field, NULL_TREE);
- gcc_assert(POINTER_TYPE_P(TREE_TYPE(table)));
+ go_assert(POINTER_TYPE_P(TREE_TYPE(table)));
table = build_fold_indirect_ref(table);
- gcc_assert(TREE_CODE(TREE_TYPE(table)) == RECORD_TYPE);
+ go_assert(TREE_CODE(TREE_TYPE(table)) == RECORD_TYPE);
std::string name = Gogo::unpack_hidden_name(this->name_);
for (field = DECL_CHAIN(TYPE_FIELDS(TREE_TYPE(table)));
if (name == IDENTIFIER_POINTER(DECL_NAME(field)))
break;
}
- gcc_assert(field != NULL_TREE);
+ go_assert(field != NULL_TREE);
return build3(COMPONENT_REF, TREE_TYPE(field), table, field, NULL_TREE);
}
expr = build_fold_indirect_ref(expr);
tree expr_type = TREE_TYPE(expr);
- gcc_assert(TREE_CODE(expr_type) == RECORD_TYPE);
+ go_assert(TREE_CODE(expr_type) == RECORD_TYPE);
tree field = DECL_CHAIN(TYPE_FIELDS(expr_type));
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__object") == 0);
return build3(COMPONENT_REF, TREE_TYPE(field), expr, field, NULL_TREE);
}
tree
Interface_field_reference_expression::do_get_tree(Translate_context*)
{
- gcc_unreachable();
+ go_unreachable();
+}
+
+// Dump ast representation for an interface field reference.
+
+void
+Interface_field_reference_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ this->expr_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << "." << this->name_;
}
// Make a reference to a field in an interface.
Expression*
Expression::make_interface_field_reference(Expression* expr,
const std::string& field,
- source_location location)
+ Location location)
{
return new Interface_field_reference_expression(expr, field, location);
}
{
public:
Selector_expression(Expression* left, const std::string& name,
- source_location location)
+ Location location)
: Parser_expression(EXPRESSION_SELECTOR, location),
left_(left), name_(name)
{ }
{ return Expression::traverse(&this->left_, traverse); }
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
Expression*
do_copy()
this->location());
}
+ void
+ do_dump_expression(Ast_dump_context* ast_dump_context) const;
+
private:
Expression*
lower_method_expression(Gogo*);
// hand side.
Expression*
-Selector_expression::do_lower(Gogo* gogo, Named_object*, int)
+Selector_expression::do_lower(Gogo* gogo, Named_object*, Statement_inserter*,
+ int)
{
Expression* left = this->left_;
if (left->is_type_expression())
Expression*
Selector_expression::lower_method_expression(Gogo* gogo)
{
- source_location location = this->location();
+ Location location = this->location();
Type* type = this->left_->type();
const std::string& name(this->name_);
bool is_ambiguous;
Method* method = nt->method_function(name, &is_ambiguous);
- if (method == NULL)
+ const Typed_identifier* imethod = NULL;
+ if (method == NULL && !is_pointer)
+ {
+ Interface_type* it = nt->interface_type();
+ if (it != NULL)
+ imethod = it->find_method(name);
+ }
+
+ if (method == NULL && imethod == NULL)
{
if (!is_ambiguous)
- error_at(location, "type %<%s%> has no method %<%s%>",
+ error_at(location, "type %<%s%s%> has no method %<%s%>",
+ is_pointer ? "*" : "",
nt->message_name().c_str(),
Gogo::message_name(name).c_str());
else
- error_at(location, "method %<%s%> is ambiguous in type %<%s%>",
+ error_at(location, "method %<%s%s%> is ambiguous in type %<%s%>",
Gogo::message_name(name).c_str(),
+ is_pointer ? "*" : "",
nt->message_name().c_str());
return Expression::make_error(location);
}
- if (!is_pointer && !method->is_value_method())
+ if (method != NULL && !is_pointer && !method->is_value_method())
{
error_at(location, "method requires pointer (use %<(*%s).%s)%>",
nt->message_name().c_str(),
// Build a new function type in which the receiver becomes the first
// argument.
- Function_type* method_type = method->type();
- gcc_assert(method_type->is_method());
+ Function_type* method_type;
+ if (method != NULL)
+ {
+ method_type = method->type();
+ go_assert(method_type->is_method());
+ }
+ else
+ {
+ method_type = imethod->type()->function_type();
+ go_assert(method_type != NULL && !method_type->is_method());
+ }
const char* const receiver_name = "$this";
Typed_identifier_list* parameters = new Typed_identifier_list();
const Typed_identifier_list* method_parameters = method_type->parameters();
if (method_parameters != NULL)
{
+ int i = 0;
for (Typed_identifier_list::const_iterator p = method_parameters->begin();
p != method_parameters->end();
- ++p)
- parameters->push_back(*p);
+ ++p, ++i)
+ {
+ if (!p->name().empty())
+ parameters->push_back(*p);
+ else
+ {
+ char buf[20];
+ snprintf(buf, sizeof buf, "$param%d", i);
+ parameters->push_back(Typed_identifier(buf, p->type(),
+ p->location()));
+ }
+ }
}
const Typed_identifier_list* method_results = method_type->results();
// simply reuse the existing function. We use an internal hack to
// get the right type.
- if (is_pointer)
+ if (method != NULL && is_pointer)
{
Named_object* mno = (method->needs_stub_method()
? method->stub_object()
location);
Named_object* vno = gogo->lookup(receiver_name, NULL);
- gcc_assert(vno != NULL);
+ go_assert(vno != NULL);
Expression* ve = Expression::make_var_reference(vno, location);
- Expression* bm = Type::bind_field_or_method(gogo, nt, ve, name, location);
+ Expression* bm;
+ if (method != NULL)
+ bm = Type::bind_field_or_method(gogo, nt, ve, name, location);
+ else
+ bm = Expression::make_interface_field_reference(ve, name, location);
// Even though we found the method above, if it has an error type we
// may see an error here.
}
Expression_list* args;
- if (method_parameters == NULL)
+ if (parameters->size() <= 1)
args = NULL;
else
{
args = new Expression_list();
- for (Typed_identifier_list::const_iterator p = method_parameters->begin();
- p != method_parameters->end();
- ++p)
+ Typed_identifier_list::const_iterator p = parameters->begin();
+ ++p;
+ for (; p != parameters->end(); ++p)
{
vno = gogo->lookup(p->name(), NULL);
- gcc_assert(vno != NULL);
+ go_assert(vno != NULL);
args->push_back(Expression::make_var_reference(vno, location));
}
}
+ gogo->start_block(location);
+
Call_expression* call = Expression::make_call(bm, args,
method_type->is_varargs(),
location);
size_t count = call->result_count();
Statement* s;
if (count == 0)
- s = Statement::make_statement(call);
+ s = Statement::make_statement(call, true);
else
{
Expression_list* retvals = new Expression_list();
for (size_t i = 0; i < count; ++i)
retvals->push_back(Expression::make_call_result(call, i));
}
- s = Statement::make_return_statement(no->func_value()->type()->results(),
- retvals, location);
+ s = Statement::make_return_statement(retvals, location);
}
gogo->add_statement(s);
+ Block* b = gogo->finish_block(location);
+
+ gogo->add_block(b, location);
+
+ // Lower the call in case there are multiple results.
+ gogo->lower_block(no, b);
+
gogo->finish_function(location);
return Expression::make_func_reference(no, NULL, location);
}
+// Dump the ast for a selector expression.
+
+void
+Selector_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ ast_dump_context->dump_expression(this->left_);
+ ast_dump_context->ostream() << ".";
+ ast_dump_context->ostream() << this->name_;
+}
+
// Make a selector expression.
Expression*
Expression::make_selector(Expression* left, const std::string& name,
- source_location location)
+ Location location)
{
return new Selector_expression(left, name, location);
}
class Allocation_expression : public Expression
{
public:
- Allocation_expression(Type* type, source_location location)
+ Allocation_expression(Type* type, Location location)
: Expression(EXPRESSION_ALLOCATION, location),
type_(type)
{ }
do_determine_type(const Type_context*)
{ }
- void
- do_check_types(Gogo*);
-
Expression*
do_copy()
{ return new Allocation_expression(this->type_, this->location()); }
tree
do_get_tree(Translate_context*);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type we are allocating.
Type* type_;
};
-// Check the type of an allocation expression.
-
-void
-Allocation_expression::do_check_types(Gogo*)
-{
- if (this->type_->function_type() != NULL)
- this->report_error(_("invalid new of function type"));
-}
-
// Return a tree for an allocation expression.
tree
Allocation_expression::do_get_tree(Translate_context* context)
{
- tree type_tree = this->type_->get_tree(context->gogo());
+ tree type_tree = type_to_tree(this->type_->get_backend(context->gogo()));
if (type_tree == error_mark_node)
return error_mark_node;
tree size_tree = TYPE_SIZE_UNIT(type_tree);
return fold_convert(build_pointer_type(type_tree), space);
}
-// Make an allocation expression.
-
-Expression*
-Expression::make_allocation(Type* type, source_location location)
-{
- return new Allocation_expression(type, location);
-}
-
-// Implement the builtin function make.
-
-class Make_expression : public Expression
-{
- public:
- Make_expression(Type* type, Expression_list* args, source_location location)
- : Expression(EXPRESSION_MAKE, location),
- type_(type), args_(args)
- { }
-
- protected:
- int
- do_traverse(Traverse* traverse);
-
- Type*
- do_type()
- { return this->type_; }
-
- void
- do_determine_type(const Type_context*);
-
- void
- do_check_types(Gogo*);
-
- Expression*
- do_copy()
- {
- return new Make_expression(this->type_, this->args_->copy(),
- this->location());
- }
-
- tree
- do_get_tree(Translate_context*);
-
- private:
- // The type we are making.
- Type* type_;
- // The arguments to pass to the make routine.
- Expression_list* args_;
-};
-
-// Traversal.
-
-int
-Make_expression::do_traverse(Traverse* traverse)
-{
- if (this->args_ != NULL
- && this->args_->traverse(traverse) == TRAVERSE_EXIT)
- return TRAVERSE_EXIT;
- if (Type::traverse(this->type_, traverse) == TRAVERSE_EXIT)
- return TRAVERSE_EXIT;
- return TRAVERSE_CONTINUE;
-}
-
-// Set types of arguments.
-
-void
-Make_expression::do_determine_type(const Type_context*)
-{
- if (this->args_ != NULL)
- {
- Type_context context(Type::lookup_integer_type("int"), false);
- for (Expression_list::const_iterator pe = this->args_->begin();
- pe != this->args_->end();
- ++pe)
- (*pe)->determine_type(&context);
- }
-}
-
-// Check types for a make expression.
+// Dump ast representation for an allocation expression.
void
-Make_expression::do_check_types(Gogo*)
-{
- if (this->type_->channel_type() == NULL
- && this->type_->map_type() == NULL
- && (this->type_->array_type() == NULL
- || this->type_->array_type()->length() != NULL))
- this->report_error(_("invalid type for make function"));
- else if (!this->type_->check_make_expression(this->args_, this->location()))
- this->set_is_error();
-}
-
-// Return a tree for a make expression.
-
-tree
-Make_expression::do_get_tree(Translate_context* context)
+Allocation_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
{
- return this->type_->make_expression_tree(context, this->args_,
- this->location());
+ ast_dump_context->ostream() << "new(";
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << ")";
}
-// Make a make expression.
+// Make an allocation expression.
Expression*
-Expression::make_make(Type* type, Expression_list* args,
- source_location location)
+Expression::make_allocation(Type* type, Location location)
{
- return new Make_expression(type, args, location);
+ return new Allocation_expression(type, location);
}
// Construct a struct.
{
public:
Struct_construction_expression(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
: Expression(EXPRESSION_STRUCT_CONSTRUCTION, location),
type_(type), vals_(vals)
{ }
this->location());
}
- bool
- do_is_addressable() const
- { return true; }
-
tree
do_get_tree(Translate_context*);
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type of the struct to construct.
Type* type_;
this->set_is_error();
}
}
- gcc_assert(pv == this->vals_->end());
+ go_assert(pv == this->vals_->end());
}
// Return a tree for constructing a struct.
Gogo* gogo = context->gogo();
if (this->vals_ == NULL)
- return this->type_->get_init_tree(gogo, false);
+ {
+ Btype* btype = this->type_->get_backend(gogo);
+ return expr_to_tree(gogo->backend()->zero_expression(btype));
+ }
- tree type_tree = this->type_->get_tree(gogo);
+ tree type_tree = type_to_tree(this->type_->get_backend(gogo));
if (type_tree == error_mark_node)
return error_mark_node;
- gcc_assert(TREE_CODE(type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(type_tree) == RECORD_TYPE);
bool is_constant = true;
const Struct_field_list* fields = this->type_->struct_type()->fields();
field != NULL_TREE;
field = DECL_CHAIN(field), ++pf)
{
- gcc_assert(pf != fields->end());
+ go_assert(pf != fields->end());
+
+ Btype* fbtype = pf->type()->get_backend(gogo);
tree val;
if (pv == this->vals_->end())
- val = pf->type()->get_init_tree(gogo, false);
+ val = expr_to_tree(gogo->backend()->zero_expression(fbtype));
else if (*pv == NULL)
{
- val = pf->type()->get_init_tree(gogo, false);
+ val = expr_to_tree(gogo->backend()->zero_expression(fbtype));
++pv;
}
else
if (!TREE_CONSTANT(val))
is_constant = false;
}
- gcc_assert(pf == fields->end());
+ go_assert(pf == fields->end());
tree ret = build_constructor(type_tree, elts);
if (is_constant)
exp->write_c_string(")");
}
+// Dump ast representation of a struct construction expression.
+
+void
+Struct_construction_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << "{";
+ ast_dump_context->dump_expression_list(this->vals_);
+ ast_dump_context->ostream() << "}";
+}
+
// Make a struct composite literal. This used by the thunk code.
Expression*
Expression::make_struct_composite_literal(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
{
- gcc_assert(type->struct_type() != NULL);
+ go_assert(type->struct_type() != NULL);
return new Struct_construction_expression(type, vals, location);
}
protected:
Array_construction_expression(Expression_classification classification,
Type* type, Expression_list* vals,
- source_location location)
+ Location location)
: Expression(classification, location),
type_(type), vals_(vals)
{ }
void
do_check_types(Gogo*);
- bool
- do_is_addressable() const
- { return true; }
-
void
do_export(Export*) const;
tree
get_constructor_tree(Translate_context* context, tree type_tree);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type of the array to construct.
Type* type_;
}
Expression* length = at->length();
- if (length != NULL)
+ Numeric_constant nc;
+ unsigned long val;
+ if (length != NULL
+ && !length->is_error_expression()
+ && length->numeric_constant_value(&nc)
+ && nc.to_unsigned_long(&val) == Numeric_constant::NC_UL_VALID)
{
- mpz_t val;
- mpz_init(val);
- Type* type;
- if (at->length()->integer_constant_value(true, val, &type))
- {
- if (this->vals_->size() > mpz_get_ui(val))
- this->report_error(_("too many elements in composite literal"));
- }
- mpz_clear(val);
+ if (this->vals_->size() > val)
+ this->report_error(_("too many elements in composite literal"));
}
}
constructor_elt* elt = VEC_quick_push(constructor_elt, values, NULL);
elt->index = size_int(i);
if (*pv == NULL)
- elt->value = element_type->get_init_tree(context->gogo(), false);
+ {
+ Gogo* gogo = context->gogo();
+ Btype* ebtype = element_type->get_backend(gogo);
+ Bexpression *zv = gogo->backend()->zero_expression(ebtype);
+ elt->value = expr_to_tree(zv);
+ }
else
{
tree value_tree = (*pv)->get_tree(context);
exp->write_c_string(")");
}
+// Dump ast representation of an array construction expressin.
+
+void
+Array_construction_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ Expression* length = this->type_->array_type() != NULL ?
+ this->type_->array_type()->length() : NULL;
+
+ ast_dump_context->ostream() << "[" ;
+ if (length != NULL)
+ {
+ ast_dump_context->dump_expression(length);
+ }
+ ast_dump_context->ostream() << "]" ;
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << "{" ;
+ ast_dump_context->dump_expression_list(this->vals_);
+ ast_dump_context->ostream() << "}" ;
+
+}
+
// Construct a fixed array.
class Fixed_array_construction_expression :
{
public:
Fixed_array_construction_expression(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
: Array_construction_expression(EXPRESSION_FIXED_ARRAY_CONSTRUCTION,
type, vals, location)
{
- gcc_assert(type->array_type() != NULL
+ go_assert(type->array_type() != NULL
&& type->array_type()->length() != NULL);
}
tree
do_get_tree(Translate_context*);
+
+ void
+ do_dump_expression(Ast_dump_context*);
};
// Return a tree for constructing a fixed array.
tree
Fixed_array_construction_expression::do_get_tree(Translate_context* context)
{
- return this->get_constructor_tree(context,
- this->type()->get_tree(context->gogo()));
+ Type* type = this->type();
+ Btype* btype = type->get_backend(context->gogo());
+ return this->get_constructor_tree(context, type_to_tree(btype));
}
+// Dump ast representation of an array construction expressin.
+
+void
+Fixed_array_construction_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context)
+{
+
+ ast_dump_context->ostream() << "[";
+ ast_dump_context->dump_expression (this->type()->array_type()->length());
+ ast_dump_context->ostream() << "]";
+ ast_dump_context->dump_type(this->type());
+ ast_dump_context->ostream() << "{";
+ ast_dump_context->dump_expression_list(this->vals());
+ ast_dump_context->ostream() << "}";
+
+}
// Construct an open array.
class Open_array_construction_expression : public Array_construction_expression
{
public:
Open_array_construction_expression(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
: Array_construction_expression(EXPRESSION_OPEN_ARRAY_CONSTRUCTION,
type, vals, location)
{
- gcc_assert(type->array_type() != NULL
+ go_assert(type->array_type() != NULL
&& type->array_type()->length() == NULL);
}
Array_type* array_type = this->type()->array_type();
if (array_type == NULL)
{
- gcc_assert(this->type()->is_error());
+ go_assert(this->type()->is_error());
return error_mark_node;
}
Type* element_type = array_type->element_type();
- tree element_type_tree = element_type->get_tree(context->gogo());
+ Btype* belement_type = element_type->get_backend(context->gogo());
+ tree element_type_tree = type_to_tree(belement_type);
if (element_type_tree == error_mark_node)
return error_mark_node;
VEC(constructor_elt,gc)* vec = VEC_alloc(constructor_elt, gc, 1);
constructor_elt* elt = VEC_quick_push(constructor_elt, vec, NULL);
elt->index = size_int(0);
- elt->value = element_type->get_init_tree(context->gogo(), false);
+ Gogo* gogo = context->gogo();
+ Btype* btype = element_type->get_backend(gogo);
+ elt->value = expr_to_tree(gogo->backend()->zero_expression(btype));
values = build_constructor(constructor_type, vec);
if (TREE_CONSTANT(elt->value))
TREE_CONSTANT(values) = 1;
if (is_constant_initializer)
{
- tree tmp = build_decl(this->location(), VAR_DECL,
+ tree tmp = build_decl(this->location().gcc_location(), VAR_DECL,
create_tmp_var_name("C"), TREE_TYPE(values));
DECL_EXTERNAL(tmp) = 0;
TREE_PUBLIC(tmp) = 0;
space = save_expr(space);
tree s = fold_convert(build_pointer_type(TREE_TYPE(values)), space);
- tree ref = build_fold_indirect_ref_loc(this->location(), s);
+ tree ref = build_fold_indirect_ref_loc(this->location().gcc_location(),
+ s);
TREE_THIS_NOTRAP(ref) = 1;
set = build2(MODIFY_EXPR, void_type_node, ref, values);
}
// Build a constructor for the open array.
- tree type_tree = this->type()->get_tree(context->gogo());
+ tree type_tree = type_to_tree(this->type()->get_backend(context->gogo()));
if (type_tree == error_mark_node)
return error_mark_node;
- gcc_assert(TREE_CODE(type_tree) == RECORD_TYPE);
+ go_assert(TREE_CODE(type_tree) == RECORD_TYPE);
VEC(constructor_elt,gc)* init = VEC_alloc(constructor_elt, gc, 3);
constructor_elt* elt = VEC_quick_push(constructor_elt, init, NULL);
tree field = TYPE_FIELDS(type_tree);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__values") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__values") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), space);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__count") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)), "__count") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), length_tree);
elt = VEC_quick_push(constructor_elt, init, NULL);
field = DECL_CHAIN(field);
- gcc_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),"__capacity") == 0);
+ go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(field)),"__capacity") == 0);
elt->index = field;
elt->value = fold_convert(TREE_TYPE(field), length_tree);
Expression*
Expression::make_slice_composite_literal(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
{
- gcc_assert(type->is_open_array_type());
+ go_assert(type->is_slice_type());
return new Open_array_construction_expression(type, vals, location);
}
{
public:
Map_construction_expression(Type* type, Expression_list* vals,
- source_location location)
+ Location location)
: Expression(EXPRESSION_MAP_CONSTRUCTION, location),
type_(type), vals_(vals)
- { gcc_assert(vals == NULL || vals->size() % 2 == 0); }
+ { go_assert(vals == NULL || vals->size() % 2 == 0); }
protected:
int
void
do_export(Export*) const;
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type of the map to construct.
Type* type_;
Map_construction_expression::do_get_tree(Translate_context* context)
{
Gogo* gogo = context->gogo();
- source_location loc = this->location();
+ Location loc = this->location();
Map_type* mt = this->type_->map_type();
Type* key_type = mt->key_type();
tree id = get_identifier("__key");
- tree key_type_tree = key_type->get_tree(gogo);
+ tree key_type_tree = type_to_tree(key_type->get_backend(gogo));
if (key_type_tree == error_mark_node)
return error_mark_node;
- tree key_field = build_decl(loc, FIELD_DECL, id, key_type_tree);
+ tree key_field = build_decl(loc.gcc_location(), FIELD_DECL, id,
+ key_type_tree);
DECL_CONTEXT(key_field) = struct_type;
TYPE_FIELDS(struct_type) = key_field;
Type* val_type = mt->val_type();
id = get_identifier("__val");
- tree val_type_tree = val_type->get_tree(gogo);
+ tree val_type_tree = type_to_tree(val_type->get_backend(gogo));
if (val_type_tree == error_mark_node)
return error_mark_node;
- tree val_field = build_decl(loc, FIELD_DECL, id, val_type_tree);
+ tree val_field = build_decl(loc.gcc_location(), FIELD_DECL, id,
+ val_type_tree);
DECL_CONTEXT(val_field) = struct_type;
DECL_CHAIN(key_field) = val_field;
{
tmp = create_tmp_var(array_type, get_name(array_type));
DECL_INITIAL(tmp) = init;
- make_tmp = fold_build1_loc(loc, DECL_EXPR, void_type_node, tmp);
+ make_tmp = fold_build1_loc(loc.gcc_location(), DECL_EXPR,
+ void_type_node, tmp);
TREE_ADDRESSABLE(tmp) = 1;
}
else
{
- tmp = build_decl(loc, VAR_DECL, create_tmp_var_name("M"), array_type);
+ tmp = build_decl(loc.gcc_location(), VAR_DECL,
+ create_tmp_var_name("M"), array_type);
DECL_EXTERNAL(tmp) = 0;
TREE_PUBLIC(tmp) = 0;
TREE_STATIC(tmp) = 1;
DECL_ARTIFICIAL(tmp) = 1;
if (!TREE_CONSTANT(init))
- make_tmp = fold_build2_loc(loc, INIT_EXPR, void_type_node, tmp,
- init);
+ make_tmp = fold_build2_loc(loc.gcc_location(), INIT_EXPR,
+ void_type_node, tmp, init);
else
{
TREE_READONLY(tmp) = 1;
valaddr = build_fold_addr_expr(tmp);
}
- tree descriptor = gogo->map_descriptor(mt);
+ tree descriptor = mt->map_descriptor_pointer(gogo, loc);
- tree type_tree = this->type_->get_tree(gogo);
+ tree type_tree = type_to_tree(this->type_->get_backend(gogo));
if (type_tree == error_mark_node)
return error_mark_node;
if (make_tmp == NULL)
ret = call;
else
- ret = fold_build2_loc(loc, COMPOUND_EXPR, type_tree, make_tmp, call);
+ ret = fold_build2_loc(loc.gcc_location(), COMPOUND_EXPR, type_tree,
+ make_tmp, call);
return ret;
}
exp->write_c_string(")");
}
+// Dump ast representation for a map construction expression.
+
+void
+Map_construction_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "{" ;
+ ast_dump_context->dump_expression_list(this->vals_, true);
+ ast_dump_context->ostream() << "}";
+}
+
// A general composite literal. This is lowered to a type specific
// version.
{
public:
Composite_literal_expression(Type* type, int depth, bool has_keys,
- Expression_list* vals, source_location location)
+ Expression_list* vals, Location location)
: Parser_expression(EXPRESSION_COMPOSITE_LITERAL, location),
type_(type), depth_(depth), vals_(vals), has_keys_(has_keys)
{ }
do_traverse(Traverse* traverse);
Expression*
- do_lower(Gogo*, Named_object*, int);
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int);
Expression*
do_copy()
this->location());
}
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
Expression*
lower_struct(Gogo*, Type*);
make_array(Type*, Expression_list*);
Expression*
- lower_map(Gogo*, Named_object*, Type*);
+ lower_map(Gogo*, Named_object*, Statement_inserter*, Type*);
// The type of the composite literal.
Type* type_;
// the type.
Expression*
-Composite_literal_expression::do_lower(Gogo* gogo, Named_object* function, int)
+Composite_literal_expression::do_lower(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter, int)
{
Type* type = this->type_;
}
}
- if (type->is_error())
- return Expression::make_error(this->location());
+ Type *pt = type->points_to();
+ bool is_pointer = false;
+ if (pt != NULL)
+ {
+ is_pointer = true;
+ type = pt;
+ }
+
+ Expression* ret;
+ if (type->is_error())
+ return Expression::make_error(this->location());
else if (type->struct_type() != NULL)
- return this->lower_struct(gogo, type);
+ ret = this->lower_struct(gogo, type);
else if (type->array_type() != NULL)
- return this->lower_array(type);
+ ret = this->lower_array(type);
else if (type->map_type() != NULL)
- return this->lower_map(gogo, function, type);
+ ret = this->lower_map(gogo, function, inserter, type);
else
{
error_at(this->location(),
"for composite literal"));
return Expression::make_error(this->location());
}
+
+ if (is_pointer)
+ ret = Expression::make_heap_composite(ret, this->location());
+
+ return ret;
}
// Lower a struct composite literal.
Expression*
Composite_literal_expression::lower_struct(Gogo* gogo, Type* type)
{
- source_location location = this->location();
+ Location location = this->location();
Struct_type* st = type->struct_type();
if (this->vals_ == NULL || !this->has_keys_)
- return new Struct_construction_expression(type, this->vals_, location);
+ {
+ if (this->vals_ != NULL
+ && !this->vals_->empty()
+ && type->named_type() != NULL
+ && type->named_type()->named_object()->package() != NULL)
+ {
+ for (Struct_field_list::const_iterator pf = st->fields()->begin();
+ pf != st->fields()->end();
+ ++pf)
+ {
+ if (Gogo::is_hidden_name(pf->field_name()))
+ error_at(this->location(),
+ "assignment of unexported field %qs in %qs literal",
+ Gogo::message_name(pf->field_name()).c_str(),
+ type->named_type()->message_name().c_str());
+ }
+ }
+
+ return new Struct_construction_expression(type, this->vals_, location);
+ }
size_t field_count = st->field_count();
std::vector<Expression*> vals(field_count);
Expression* name_expr = *p;
++p;
- gcc_assert(p != this->vals_->end());
+ go_assert(p != this->vals_->end());
Expression* val = *p;
++p;
{
const Struct_field* sf = st->field(fre->field_index());
name = sf->field_name();
+
+ // See below. FIXME.
+ if (!Gogo::is_hidden_name(name)
+ && name[0] >= 'a'
+ && name[0] <= 'z')
+ {
+ if (gogo->lookup_global(name.c_str()) != NULL)
+ name = gogo->pack_hidden_name(name, false);
+ }
+
char buf[20];
snprintf(buf, sizeof buf, "%u", fre->field_index());
size_t buflen = strlen(buf);
// A predefined name won't be packed. If it starts with a
// lower case letter we need to check for that case, because
- // the field name will be packed.
+ // the field name will be packed. FIXME.
if (!Gogo::is_hidden_name(name)
&& name[0] >= 'a'
&& name[0] <= 'z')
return Expression::make_error(location);
}
+ if (type->named_type() != NULL
+ && type->named_type()->named_object()->package() != NULL
+ && Gogo::is_hidden_name(sf->field_name()))
+ error_at(name_expr->location(),
+ "assignment of unexported field %qs in %qs literal",
+ Gogo::message_name(sf->field_name()).c_str(),
+ type->named_type()->message_name().c_str());
+
vals[index] = val;
}
Expression*
Composite_literal_expression::lower_array(Type* type)
{
- source_location location = this->location();
+ Location location = this->location();
if (this->vals_ == NULL || !this->has_keys_)
return this->make_array(type, this->vals_);
Expression* index_expr = *p;
++p;
- gcc_assert(p != this->vals_->end());
+ go_assert(p != this->vals_->end());
Expression* val = *p;
++p;
if (index_expr != NULL)
{
- mpz_t ival;
- mpz_init(ival);
-
- Type* dummy;
- if (!index_expr->integer_constant_value(true, ival, &dummy))
+ Numeric_constant nc;
+ if (!index_expr->numeric_constant_value(&nc))
{
- mpz_clear(ival);
error_at(index_expr->location(),
"index expression is not integer constant");
return Expression::make_error(location);
}
- if (mpz_sgn(ival) < 0)
+ switch (nc.to_unsigned_long(&index))
{
- mpz_clear(ival);
+ case Numeric_constant::NC_UL_VALID:
+ break;
+ case Numeric_constant::NC_UL_NOTINT:
+ error_at(index_expr->location(),
+ "index expression is not integer constant");
+ return Expression::make_error(location);
+ case Numeric_constant::NC_UL_NEGATIVE:
error_at(index_expr->location(), "index expression is negative");
return Expression::make_error(location);
- }
-
- index = mpz_get_ui(ival);
- if (mpz_cmp_ui(ival, index) != 0)
- {
- mpz_clear(ival);
+ case Numeric_constant::NC_UL_BIG:
error_at(index_expr->location(), "index value overflow");
return Expression::make_error(location);
+ default:
+ go_unreachable();
}
Named_type* ntype = Type::lookup_integer_type("int");
Integer_type* inttype = ntype->integer_type();
- mpz_t max;
- mpz_init_set_ui(max, 1);
- mpz_mul_2exp(max, max, inttype->bits() - 1);
- bool ok = mpz_cmp(ival, max) < 0;
- mpz_clear(max);
- if (!ok)
+ if (sizeof(index) <= static_cast<size_t>(inttype->bits() * 8)
+ && index >> (inttype->bits() - 1) != 0)
{
- mpz_clear(ival);
error_at(index_expr->location(), "index value overflow");
return Expression::make_error(location);
}
- mpz_clear(ival);
-
// FIXME: Our representation isn't very good; this avoids
// thrashing.
if (index > 0x1000000)
Expression*
Composite_literal_expression::make_array(Type* type, Expression_list* vals)
{
- source_location location = this->location();
+ Location location = this->location();
Array_type* at = type->array_type();
if (at->length() != NULL && at->length()->is_nil_expression())
{
Expression*
Composite_literal_expression::lower_map(Gogo* gogo, Named_object* function,
+ Statement_inserter* inserter,
Type* type)
{
- source_location location = this->location();
+ Location location = this->location();
if (this->vals_ != NULL)
{
if (!this->has_keys_)
if ((*p)->unknown_expression() != NULL)
{
(*p)->unknown_expression()->clear_is_composite_literal_key();
- gogo->lower_expression(function, &*p);
- gcc_assert((*p)->is_error_expression());
+ gogo->lower_expression(function, inserter, &*p);
+ go_assert((*p)->is_error_expression());
return Expression::make_error(location);
}
}
return new Map_construction_expression(type, this->vals_, location);
}
+// Dump ast representation for a composite literal expression.
+
+void
+Composite_literal_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "composite(";
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << ", {";
+ ast_dump_context->dump_expression_list(this->vals_, this->has_keys_);
+ ast_dump_context->ostream() << "})";
+}
+
// Make a composite literal expression.
Expression*
Expression::make_composite_literal(Type* type, int depth, bool has_keys,
Expression_list* vals,
- source_location location)
+ Location location)
{
return new Composite_literal_expression(type, depth, has_keys, vals,
location);
|| expr_type->integer_type() != NULL))
|| (expr_type->is_unsafe_pointer_type()
&& this->type_->points_to() != NULL))
- return convert_to_pointer(this->type_->get_tree(gogo), expr_tree);
+ return convert_to_pointer(type_to_tree(this->type_->get_backend(gogo)),
+ expr_tree);
else if (expr_type->is_unsafe_pointer_type()
&& this->type_->integer_type() != NULL)
- return convert_to_integer(this->type_->get_tree(gogo), expr_tree);
+ return convert_to_integer(type_to_tree(this->type_->get_backend(gogo)),
+ expr_tree);
else if (this->type_->interface_type() != NULL)
return Expression::convert_interface_to_interface(context, this->type_,
this->expr_->type(),
this->location());
}
+// Dump ast representation for a type guard expression.
+
+void
+Type_guard_expression::do_dump_expression(Ast_dump_context* ast_dump_context)
+ const
+{
+ this->expr_->dump_expression(ast_dump_context);
+ ast_dump_context->ostream() << ".";
+ ast_dump_context->dump_type(this->type_);
+}
+
// Make a type guard expression.
Expression*
Expression::make_type_guard(Expression* expr, Type* type,
- source_location location)
+ Location location)
{
return new Type_guard_expression(expr, type, location);
}
class Heap_composite_expression : public Expression
{
public:
- Heap_composite_expression(Expression* expr, source_location location)
+ Heap_composite_expression(Expression* expr, Location location)
: Expression(EXPRESSION_HEAP_COMPOSITE, location),
expr_(expr)
{ }
// this in global scope.
void
do_export(Export*) const
- { gcc_unreachable(); }
+ { go_unreachable(); }
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
private:
// The composite literal which is being put on the heap.
Heap_composite_expression::do_get_tree(Translate_context* context)
{
tree expr_tree = this->expr_->get_tree(context);
- if (expr_tree == error_mark_node)
+ if (expr_tree == error_mark_node || TREE_TYPE(expr_tree) == error_mark_node)
return error_mark_node;
tree expr_size = TYPE_SIZE_UNIT(TREE_TYPE(expr_tree));
- gcc_assert(TREE_CODE(expr_size) == INTEGER_CST);
+ go_assert(TREE_CODE(expr_size) == INTEGER_CST);
tree space = context->gogo()->allocate_memory(this->expr_->type(),
expr_size, this->location());
space = fold_convert(build_pointer_type(TREE_TYPE(expr_tree)), space);
space = save_expr(space);
- tree ref = build_fold_indirect_ref_loc(this->location(), space);
+ tree ref = build_fold_indirect_ref_loc(this->location().gcc_location(),
+ space);
TREE_THIS_NOTRAP(ref) = 1;
tree ret = build2(COMPOUND_EXPR, TREE_TYPE(space),
build2(MODIFY_EXPR, void_type_node, ref, expr_tree),
space);
- SET_EXPR_LOCATION(ret, this->location());
+ SET_EXPR_LOCATION(ret, this->location().gcc_location());
return ret;
}
+// Dump ast representation for a heap composite expression.
+
+void
+Heap_composite_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "&(";
+ ast_dump_context->dump_expression(this->expr_);
+ ast_dump_context->ostream() << ")";
+}
+
// Allocate a composite literal on the heap.
Expression*
-Expression::make_heap_composite(Expression* expr, source_location location)
+Expression::make_heap_composite(Expression* expr, Location location)
{
return new Heap_composite_expression(expr, location);
}
tree
Receive_expression::do_get_tree(Translate_context* context)
{
+ Location loc = this->location();
+
Channel_type* channel_type = this->channel_->type()->channel_type();
if (channel_type == NULL)
{
- gcc_assert(this->channel_->type()->is_error());
+ go_assert(this->channel_->type()->is_error());
return error_mark_node;
}
+
+ Expression* td = Expression::make_type_descriptor(channel_type, loc);
+ tree td_tree = td->get_tree(context);
+
Type* element_type = channel_type->element_type();
- tree element_type_tree = element_type->get_tree(context->gogo());
+ Btype* element_type_btype = element_type->get_backend(context->gogo());
+ tree element_type_tree = type_to_tree(element_type_btype);
tree channel = this->channel_->get_tree(context);
if (element_type_tree == error_mark_node || channel == error_mark_node)
return error_mark_node;
- return Gogo::receive_from_channel(element_type_tree, channel,
- this->for_select_, this->location());
+ return Gogo::receive_from_channel(element_type_tree, td_tree, channel, loc);
+}
+
+// Dump ast representation for a receive expression.
+
+void
+Receive_expression::do_dump_expression(Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << " <- " ;
+ ast_dump_context->dump_expression(channel_);
}
// Make a receive expression.
Receive_expression*
-Expression::make_receive(Expression* channel, source_location location)
+Expression::make_receive(Expression* channel, Location location)
{
return new Receive_expression(channel, location);
}
class Type_descriptor_expression : public Expression
{
public:
- Type_descriptor_expression(Type* type, source_location location)
+ Type_descriptor_expression(Type* type, Location location)
: Expression(EXPRESSION_TYPE_DESCRIPTOR, location),
type_(type)
{ }
tree
do_get_tree(Translate_context* context)
- { return this->type_->type_descriptor_pointer(context->gogo()); }
+ {
+ return this->type_->type_descriptor_pointer(context->gogo(),
+ this->location());
+ }
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
private:
// The type for which this is the descriptor.
Type* type_;
};
+// Dump ast representation for a type descriptor expression.
+
+void
+Type_descriptor_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->dump_type(this->type_);
+}
+
// Make a type descriptor expression.
Expression*
-Expression::make_type_descriptor(Type* type, source_location location)
+Expression::make_type_descriptor(Type* type, Location location)
{
return new Type_descriptor_expression(type, location);
}
{
public:
Type_info_expression(Type* type, Type_info type_info)
- : Expression(EXPRESSION_TYPE_INFO, BUILTINS_LOCATION),
+ : Expression(EXPRESSION_TYPE_INFO, Linemap::predeclared_location()),
type_(type), type_info_(type_info)
{ }
tree
do_get_tree(Translate_context* context);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type for which we are getting information.
Type* type_;
case TYPE_INFO_FIELD_ALIGNMENT:
return Type::lookup_integer_type("uint8");
default:
- gcc_unreachable();
+ go_unreachable();
}
}
tree
Type_info_expression::do_get_tree(Translate_context* context)
{
- tree type_tree = this->type_->get_tree(context->gogo());
- if (type_tree == error_mark_node)
- return error_mark_node;
-
- tree val_type_tree = this->type()->get_tree(context->gogo());
- gcc_assert(val_type_tree != error_mark_node);
-
- if (this->type_info_ == TYPE_INFO_SIZE)
- return fold_convert_loc(BUILTINS_LOCATION, val_type_tree,
- TYPE_SIZE_UNIT(type_tree));
- else
+ Btype* btype = this->type_->get_backend(context->gogo());
+ Gogo* gogo = context->gogo();
+ size_t val;
+ switch (this->type_info_)
{
- unsigned int val;
- if (this->type_info_ == TYPE_INFO_ALIGNMENT)
- val = go_type_alignment(type_tree);
- else
- val = go_field_alignment(type_tree);
- return build_int_cstu(val_type_tree, val);
+ case TYPE_INFO_SIZE:
+ val = gogo->backend()->type_size(btype);
+ break;
+ case TYPE_INFO_ALIGNMENT:
+ val = gogo->backend()->type_alignment(btype);
+ break;
+ case TYPE_INFO_FIELD_ALIGNMENT:
+ val = gogo->backend()->type_field_alignment(btype);
+ break;
+ default:
+ go_unreachable();
}
+ tree val_type_tree = type_to_tree(this->type()->get_backend(gogo));
+ go_assert(val_type_tree != error_mark_node);
+ return build_int_cstu(val_type_tree, val);
+}
+
+// Dump ast representation for a type info expression.
+
+void
+Type_info_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "typeinfo(";
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << ",";
+ ast_dump_context->ostream() <<
+ (this->type_info_ == TYPE_INFO_ALIGNMENT ? "alignment"
+ : this->type_info_ == TYPE_INFO_FIELD_ALIGNMENT ? "field alignment"
+ : this->type_info_ == TYPE_INFO_SIZE ? "size "
+ : "unknown");
+ ast_dump_context->ostream() << ")";
}
// Make a type info expression.
{
public:
Struct_field_offset_expression(Struct_type* type, const Struct_field* field)
- : Expression(EXPRESSION_STRUCT_FIELD_OFFSET, BUILTINS_LOCATION),
+ : Expression(EXPRESSION_STRUCT_FIELD_OFFSET,
+ Linemap::predeclared_location()),
type_(type), field_(field)
{ }
tree
do_get_tree(Translate_context* context);
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
private:
// The type of the struct.
Struct_type* type_;
tree
Struct_field_offset_expression::do_get_tree(Translate_context* context)
{
- tree type_tree = this->type_->get_tree(context->gogo());
+ tree type_tree = type_to_tree(this->type_->get_backend(context->gogo()));
if (type_tree == error_mark_node)
return error_mark_node;
- tree val_type_tree = this->type()->get_tree(context->gogo());
- gcc_assert(val_type_tree != error_mark_node);
+ tree val_type_tree = type_to_tree(this->type()->get_backend(context->gogo()));
+ go_assert(val_type_tree != error_mark_node);
const Struct_field_list* fields = this->type_->fields();
tree struct_field_tree = TYPE_FIELDS(type_tree);
p != fields->end();
++p, struct_field_tree = DECL_CHAIN(struct_field_tree))
{
- gcc_assert(struct_field_tree != NULL_TREE);
+ go_assert(struct_field_tree != NULL_TREE);
if (&*p == this->field_)
break;
}
- gcc_assert(&*p == this->field_);
+ go_assert(&*p == this->field_);
return fold_convert_loc(BUILTINS_LOCATION, val_type_tree,
byte_position(struct_field_tree));
}
+// Dump ast representation for a struct field offset expression.
+
+void
+Struct_field_offset_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "unsafe.Offsetof(";
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << '.';
+ ast_dump_context->ostream() <<
+ Gogo::message_name(this->field_->field_name());
+ ast_dump_context->ostream() << ")";
+}
+
// Make an expression for a struct field offset.
Expression*
return new Struct_field_offset_expression(type, field);
}
+// An expression which evaluates to a pointer to the map descriptor of
+// a map type.
+
+class Map_descriptor_expression : public Expression
+{
+ public:
+ Map_descriptor_expression(Map_type* type, Location location)
+ : Expression(EXPRESSION_MAP_DESCRIPTOR, location),
+ type_(type)
+ { }
+
+ protected:
+ Type*
+ do_type()
+ { return Type::make_pointer_type(Map_type::make_map_descriptor_type()); }
+
+ void
+ do_determine_type(const Type_context*)
+ { }
+
+ Expression*
+ do_copy()
+ { return this; }
+
+ tree
+ do_get_tree(Translate_context* context)
+ {
+ return this->type_->map_descriptor_pointer(context->gogo(),
+ this->location());
+ }
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
+ private:
+ // The type for which this is the descriptor.
+ Map_type* type_;
+};
+
+// Dump ast representation for a map descriptor expression.
+
+void
+Map_descriptor_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "map_descriptor(";
+ ast_dump_context->dump_type(this->type_);
+ ast_dump_context->ostream() << ")";
+}
+
+// Make a map descriptor expression.
+
+Expression*
+Expression::make_map_descriptor(Map_type* type, Location location)
+{
+ return new Map_descriptor_expression(type, location);
+}
+
// An expression which evaluates to the address of an unnamed label.
class Label_addr_expression : public Expression
{
public:
- Label_addr_expression(Label* label, source_location location)
+ Label_addr_expression(Label* label, Location location)
: Expression(EXPRESSION_LABEL_ADDR, location),
label_(label)
{ }
{ return new Label_addr_expression(this->label_, this->location()); }
tree
- do_get_tree(Translate_context*)
- { return this->label_->get_addr(this->location()); }
+ do_get_tree(Translate_context* context)
+ {
+ return expr_to_tree(this->label_->get_addr(context, this->location()));
+ }
+ void
+ do_dump_expression(Ast_dump_context* ast_dump_context) const
+ { ast_dump_context->ostream() << this->label_->name(); }
+
private:
// The label whose address we are taking.
Label* label_;
// Make an expression for the address of an unnamed label.
Expression*
-Expression::make_label_addr(Label* label, source_location location)
+Expression::make_label_addr(Label* label, Location location)
{
return new Label_addr_expression(label, location);
}
return true;
return false;
}
+
+// Class Numeric_constant.
+
+// Destructor.
+
+Numeric_constant::~Numeric_constant()
+{
+ this->clear();
+}
+
+// Copy constructor.
+
+Numeric_constant::Numeric_constant(const Numeric_constant& a)
+ : classification_(a.classification_), type_(a.type_)
+{
+ switch (a.classification_)
+ {
+ case NC_INVALID:
+ break;
+ case NC_INT:
+ case NC_RUNE:
+ mpz_init_set(this->u_.int_val, a.u_.int_val);
+ break;
+ case NC_FLOAT:
+ mpfr_init_set(this->u_.float_val, a.u_.float_val, GMP_RNDN);
+ break;
+ case NC_COMPLEX:
+ mpfr_init_set(this->u_.complex_val.real, a.u_.complex_val.real,
+ GMP_RNDN);
+ mpfr_init_set(this->u_.complex_val.imag, a.u_.complex_val.imag,
+ GMP_RNDN);
+ break;
+ default:
+ go_unreachable();
+ }
+}
+
+// Assignment operator.
+
+Numeric_constant&
+Numeric_constant::operator=(const Numeric_constant& a)
+{
+ this->clear();
+ this->classification_ = a.classification_;
+ this->type_ = a.type_;
+ switch (a.classification_)
+ {
+ case NC_INVALID:
+ break;
+ case NC_INT:
+ case NC_RUNE:
+ mpz_init_set(this->u_.int_val, a.u_.int_val);
+ break;
+ case NC_FLOAT:
+ mpfr_init_set(this->u_.float_val, a.u_.float_val, GMP_RNDN);
+ break;
+ case NC_COMPLEX:
+ mpfr_init_set(this->u_.complex_val.real, a.u_.complex_val.real,
+ GMP_RNDN);
+ mpfr_init_set(this->u_.complex_val.imag, a.u_.complex_val.imag,
+ GMP_RNDN);
+ break;
+ default:
+ go_unreachable();
+ }
+ return *this;
+}
+
+// Clear the contents.
+
+void
+Numeric_constant::clear()
+{
+ switch (this->classification_)
+ {
+ case NC_INVALID:
+ break;
+ case NC_INT:
+ case NC_RUNE:
+ mpz_clear(this->u_.int_val);
+ break;
+ case NC_FLOAT:
+ mpfr_clear(this->u_.float_val);
+ break;
+ case NC_COMPLEX:
+ mpfr_clear(this->u_.complex_val.real);
+ mpfr_clear(this->u_.complex_val.imag);
+ break;
+ default:
+ go_unreachable();
+ }
+ this->classification_ = NC_INVALID;
+}
+
+// Set to an unsigned long value.
+
+void
+Numeric_constant::set_unsigned_long(Type* type, unsigned long val)
+{
+ this->clear();
+ this->classification_ = NC_INT;
+ this->type_ = type;
+ mpz_init_set_ui(this->u_.int_val, val);
+}
+
+// Set to an integer value.
+
+void
+Numeric_constant::set_int(Type* type, const mpz_t val)
+{
+ this->clear();
+ this->classification_ = NC_INT;
+ this->type_ = type;
+ mpz_init_set(this->u_.int_val, val);
+}
+
+// Set to a rune value.
+
+void
+Numeric_constant::set_rune(Type* type, const mpz_t val)
+{
+ this->clear();
+ this->classification_ = NC_RUNE;
+ this->type_ = type;
+ mpz_init_set(this->u_.int_val, val);
+}
+
+// Set to a floating point value.
+
+void
+Numeric_constant::set_float(Type* type, const mpfr_t val)
+{
+ this->clear();
+ this->classification_ = NC_FLOAT;
+ this->type_ = type;
+ mpfr_init_set(this->u_.float_val, val, GMP_RNDN);
+}
+
+// Set to a complex value.
+
+void
+Numeric_constant::set_complex(Type* type, const mpfr_t real, const mpfr_t imag)
+{
+ this->clear();
+ this->classification_ = NC_COMPLEX;
+ this->type_ = type;
+ mpfr_init_set(this->u_.complex_val.real, real, GMP_RNDN);
+ mpfr_init_set(this->u_.complex_val.imag, imag, GMP_RNDN);
+}
+
+// Get an int value.
+
+void
+Numeric_constant::get_int(mpz_t* val) const
+{
+ go_assert(this->is_int());
+ mpz_init_set(*val, this->u_.int_val);
+}
+
+// Get a rune value.
+
+void
+Numeric_constant::get_rune(mpz_t* val) const
+{
+ go_assert(this->is_rune());
+ mpz_init_set(*val, this->u_.int_val);
+}
+
+// Get a floating point value.
+
+void
+Numeric_constant::get_float(mpfr_t* val) const
+{
+ go_assert(this->is_float());
+ mpfr_init_set(*val, this->u_.float_val, GMP_RNDN);
+}
+
+// Get a complex value.
+
+void
+Numeric_constant::get_complex(mpfr_t* real, mpfr_t* imag) const
+{
+ go_assert(this->is_complex());
+ mpfr_init_set(*real, this->u_.complex_val.real, GMP_RNDN);
+ mpfr_init_set(*imag, this->u_.complex_val.imag, GMP_RNDN);
+}
+
+// Express value as unsigned long if possible.
+
+Numeric_constant::To_unsigned_long
+Numeric_constant::to_unsigned_long(unsigned long* val) const
+{
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ return this->mpz_to_unsigned_long(this->u_.int_val, val);
+ case NC_FLOAT:
+ return this->mpfr_to_unsigned_long(this->u_.float_val, val);
+ case NC_COMPLEX:
+ if (!mpfr_zero_p(this->u_.complex_val.imag))
+ return NC_UL_NOTINT;
+ return this->mpfr_to_unsigned_long(this->u_.complex_val.real, val);
+ default:
+ go_unreachable();
+ }
+}
+
+// Express integer value as unsigned long if possible.
+
+Numeric_constant::To_unsigned_long
+Numeric_constant::mpz_to_unsigned_long(const mpz_t ival,
+ unsigned long *val) const
+{
+ if (mpz_sgn(ival) < 0)
+ return NC_UL_NEGATIVE;
+ unsigned long ui = mpz_get_ui(ival);
+ if (mpz_cmp_ui(ival, ui) != 0)
+ return NC_UL_BIG;
+ *val = ui;
+ return NC_UL_VALID;
+}
+
+// Express floating point value as unsigned long if possible.
+
+Numeric_constant::To_unsigned_long
+Numeric_constant::mpfr_to_unsigned_long(const mpfr_t fval,
+ unsigned long *val) const
+{
+ if (!mpfr_integer_p(fval))
+ return NC_UL_NOTINT;
+ mpz_t ival;
+ mpz_init(ival);
+ mpfr_get_z(ival, fval, GMP_RNDN);
+ To_unsigned_long ret = this->mpz_to_unsigned_long(ival, val);
+ mpz_clear(ival);
+ return ret;
+}
+
+// Convert value to integer if possible.
+
+bool
+Numeric_constant::to_int(mpz_t* val) const
+{
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpz_init_set(*val, this->u_.int_val);
+ return true;
+ case NC_FLOAT:
+ if (!mpfr_integer_p(this->u_.float_val))
+ return false;
+ mpz_init(*val);
+ mpfr_get_z(*val, this->u_.float_val, GMP_RNDN);
+ return true;
+ case NC_COMPLEX:
+ if (!mpfr_zero_p(this->u_.complex_val.imag)
+ || !mpfr_integer_p(this->u_.complex_val.real))
+ return false;
+ mpz_init(*val);
+ mpfr_get_z(*val, this->u_.complex_val.real, GMP_RNDN);
+ return true;
+ default:
+ go_unreachable();
+ }
+}
+
+// Convert value to floating point if possible.
+
+bool
+Numeric_constant::to_float(mpfr_t* val) const
+{
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpfr_init_set_z(*val, this->u_.int_val, GMP_RNDN);
+ return true;
+ case NC_FLOAT:
+ mpfr_init_set(*val, this->u_.float_val, GMP_RNDN);
+ return true;
+ case NC_COMPLEX:
+ if (!mpfr_zero_p(this->u_.complex_val.imag))
+ return false;
+ mpfr_init_set(*val, this->u_.complex_val.real, GMP_RNDN);
+ return true;
+ default:
+ go_unreachable();
+ }
+}
+
+// Convert value to complex.
+
+bool
+Numeric_constant::to_complex(mpfr_t* vr, mpfr_t* vi) const
+{
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpfr_init_set_z(*vr, this->u_.int_val, GMP_RNDN);
+ mpfr_init_set_ui(*vi, 0, GMP_RNDN);
+ return true;
+ case NC_FLOAT:
+ mpfr_init_set(*vr, this->u_.float_val, GMP_RNDN);
+ mpfr_init_set_ui(*vi, 0, GMP_RNDN);
+ return true;
+ case NC_COMPLEX:
+ mpfr_init_set(*vr, this->u_.complex_val.real, GMP_RNDN);
+ mpfr_init_set(*vi, this->u_.complex_val.imag, GMP_RNDN);
+ return true;
+ default:
+ go_unreachable();
+ }
+}
+
+// Get the type.
+
+Type*
+Numeric_constant::type() const
+{
+ if (this->type_ != NULL)
+ return this->type_;
+ switch (this->classification_)
+ {
+ case NC_INT:
+ return Type::make_abstract_integer_type();
+ case NC_RUNE:
+ return Type::make_abstract_character_type();
+ case NC_FLOAT:
+ return Type::make_abstract_float_type();
+ case NC_COMPLEX:
+ return Type::make_abstract_complex_type();
+ default:
+ go_unreachable();
+ }
+}
+
+// If the constant can be expressed in TYPE, then set the type of the
+// constant to TYPE and return true. Otherwise return false, and, if
+// ISSUE_ERROR is true, report an appropriate error message.
+
+bool
+Numeric_constant::set_type(Type* type, bool issue_error, Location loc)
+{
+ bool ret;
+ if (type == NULL)
+ ret = true;
+ else if (type->integer_type() != NULL)
+ ret = this->check_int_type(type->integer_type(), issue_error, loc);
+ else if (type->float_type() != NULL)
+ ret = this->check_float_type(type->float_type(), issue_error, loc);
+ else if (type->complex_type() != NULL)
+ ret = this->check_complex_type(type->complex_type(), issue_error, loc);
+ else
+ go_unreachable();
+ if (ret)
+ this->type_ = type;
+ return ret;
+}
+
+// Check whether the constant can be expressed in an integer type.
+
+bool
+Numeric_constant::check_int_type(Integer_type* type, bool issue_error,
+ Location location) const
+{
+ mpz_t val;
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpz_init_set(val, this->u_.int_val);
+ break;
+
+ case NC_FLOAT:
+ if (!mpfr_integer_p(this->u_.float_val))
+ {
+ if (issue_error)
+ error_at(location, "floating point constant truncated to integer");
+ return false;
+ }
+ mpz_init(val);
+ mpfr_get_z(val, this->u_.float_val, GMP_RNDN);
+ break;
+
+ case NC_COMPLEX:
+ if (!mpfr_integer_p(this->u_.complex_val.real)
+ || !mpfr_zero_p(this->u_.complex_val.imag))
+ {
+ if (issue_error)
+ error_at(location, "complex constant truncated to integer");
+ return false;
+ }
+ mpz_init(val);
+ mpfr_get_z(val, this->u_.complex_val.real, GMP_RNDN);
+ break;
+
+ default:
+ go_unreachable();
+ }
+
+ bool ret;
+ if (type->is_abstract())
+ ret = true;
+ else
+ {
+ int bits = mpz_sizeinbase(val, 2);
+ if (type->is_unsigned())
+ {
+ // For an unsigned type we can only accept a nonnegative
+ // number, and we must be able to represents at least BITS.
+ ret = mpz_sgn(val) >= 0 && bits <= type->bits();
+ }
+ else
+ {
+ // For a signed type we need an extra bit to indicate the
+ // sign. We have to handle the most negative integer
+ // specially.
+ ret = (bits + 1 <= type->bits()
+ || (bits <= type->bits()
+ && mpz_sgn(val) < 0
+ && (mpz_scan1(val, 0)
+ == static_cast<unsigned long>(type->bits() - 1))
+ && mpz_scan0(val, type->bits()) == ULONG_MAX));
+ }
+ }
+
+ if (!ret && issue_error)
+ error_at(location, "integer constant overflow");
+
+ return ret;
+}
+
+// Check whether the constant can be expressed in a floating point
+// type.
+
+bool
+Numeric_constant::check_float_type(Float_type* type, bool issue_error,
+ Location location) const
+{
+ mpfr_t val;
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpfr_init_set_z(val, this->u_.int_val, GMP_RNDN);
+ break;
+
+ case NC_FLOAT:
+ mpfr_init_set(val, this->u_.float_val, GMP_RNDN);
+ break;
+
+ case NC_COMPLEX:
+ if (!mpfr_zero_p(this->u_.complex_val.imag))
+ {
+ if (issue_error)
+ error_at(location, "complex constant truncated to float");
+ return false;
+ }
+ mpfr_init_set(val, this->u_.complex_val.real, GMP_RNDN);
+ break;
+
+ default:
+ go_unreachable();
+ }
+
+ bool ret;
+ if (type->is_abstract())
+ ret = true;
+ else if (mpfr_nan_p(val) || mpfr_inf_p(val) || mpfr_zero_p(val))
+ {
+ // A NaN or Infinity always fits in the range of the type.
+ ret = true;
+ }
+ else
+ {
+ mp_exp_t exp = mpfr_get_exp(val);
+ mp_exp_t max_exp;
+ switch (type->bits())
+ {
+ case 32:
+ max_exp = 128;
+ break;
+ case 64:
+ max_exp = 1024;
+ break;
+ default:
+ go_unreachable();
+ }
+
+ ret = exp <= max_exp;
+ }
+
+ mpfr_clear(val);
+
+ if (!ret && issue_error)
+ error_at(location, "floating point constant overflow");
+
+ return ret;
+}
+
+// Check whether the constant can be expressed in a complex type.
+
+bool
+Numeric_constant::check_complex_type(Complex_type* type, bool issue_error,
+ Location location) const
+{
+ if (type->is_abstract())
+ return true;
+
+ mp_exp_t max_exp;
+ switch (type->bits())
+ {
+ case 64:
+ max_exp = 128;
+ break;
+ case 128:
+ max_exp = 1024;
+ break;
+ default:
+ go_unreachable();
+ }
+
+ mpfr_t real;
+ switch (this->classification_)
+ {
+ case NC_INT:
+ case NC_RUNE:
+ mpfr_init_set_z(real, this->u_.int_val, GMP_RNDN);
+ break;
+
+ case NC_FLOAT:
+ mpfr_init_set(real, this->u_.float_val, GMP_RNDN);
+ break;
+
+ case NC_COMPLEX:
+ if (!mpfr_nan_p(this->u_.complex_val.imag)
+ && !mpfr_inf_p(this->u_.complex_val.imag)
+ && !mpfr_zero_p(this->u_.complex_val.imag))
+ {
+ if (mpfr_get_exp(this->u_.complex_val.imag) > max_exp)
+ {
+ if (issue_error)
+ error_at(location, "complex imaginary part overflow");
+ return false;
+ }
+ }
+ mpfr_init_set(real, this->u_.complex_val.real, GMP_RNDN);
+ break;
+
+ default:
+ go_unreachable();
+ }
+
+ bool ret;
+ if (mpfr_nan_p(real) || mpfr_inf_p(real) || mpfr_zero_p(real))
+ ret = true;
+ else
+ ret = mpfr_get_exp(real) <= max_exp;
+
+ mpfr_clear(real);
+
+ if (!ret && issue_error)
+ error_at(location, "complex real part overflow");
+
+ return ret;
+}
+
+// Return an Expression for this value.
+
+Expression*
+Numeric_constant::expression(Location loc) const
+{
+ switch (this->classification_)
+ {
+ case NC_INT:
+ return Expression::make_integer(&this->u_.int_val, this->type_, loc);
+ case NC_RUNE:
+ return Expression::make_character(&this->u_.int_val, this->type_, loc);
+ case NC_FLOAT:
+ return Expression::make_float(&this->u_.float_val, this->type_, loc);
+ case NC_COMPLEX:
+ return Expression::make_complex(&this->u_.complex_val.real,
+ &this->u_.complex_val.imag,
+ this->type_, loc);
+ default:
+ go_unreachable();
+ }
+}
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