/* Parser for C and Objective-C.
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Parser actions based on the old Bison parser; structure somewhat
/* We found an Objective-C "pq" keyword (in, out,
inout, bycopy, byref, oneway). They need special
care because the interpretation depends on the
- context.
- */
+ context. */
if (parser->objc_pq_context)
{
token->type = CPP_KEYWORD;
you can't use 'in' as the name of the running
variable in a C for loop. We could potentially
try to add code here to disambiguate, but it
- seems a reasonable limitation.
- */
+ seems a reasonable limitation. */
token->type = CPP_KEYWORD;
token->keyword = rid_code;
break;
}
/* Else, "pq" keywords outside of the "pq" context are
not keywords, and we fall through to the code for
- normal tokens.
- */
+ normal tokens. */
}
else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code))
{
- /* We found an Objective-C "property attribute" keyword
- (readonly, copies, getter, setter, ivar). These are
+ /* We found an Objective-C "property attribute"
+ keyword (getter, setter, readonly, etc). These are
only valid in the property context. */
if (parser->objc_property_attr_context)
{
protected, public, try, catch, throw) without a
preceding '@' sign. Do nothing and fall through to
the code for normal tokens (in C++ we would still
- consider the CXX ones keywords, but not in C).
- */
+ consider the CXX ones keywords, but not in C). */
;
}
else
variables and typedefs, and hence are shadowed by local
declarations. */
if (objc_interface_decl
- && (global_bindings_p ()
- || (!objc_force_identifier && !decl)))
+ && (!objc_force_identifier || global_bindings_p ()))
{
token->value = objc_interface_decl;
token->id_kind = C_ID_CLASSNAME;
| (warn_traditional << 2)
| (flag_iso << 3)
| (warn_long_long << 4)
- | (warn_cxx_compat << 5));
+ | (warn_cxx_compat << 5)
+ | (warn_overlength_strings << 6));
cpp_opts->cpp_pedantic = pedantic = 0;
warn_pointer_arith = 0;
cpp_opts->cpp_warn_traditional = warn_traditional = 0;
flag_iso = 0;
cpp_opts->cpp_warn_long_long = warn_long_long = 0;
warn_cxx_compat = 0;
+ warn_overlength_strings = 0;
return ret;
}
flag_iso = (flags >> 3) & 1;
cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1;
warn_cxx_compat = (flags >> 5) & 1;
+ warn_overlength_strings = (flags >> 6) & 1;
}
/* Possibly kinds of declarator to parse. */
bool,
struct c_declarator *);
static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree);
-static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree);
+static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree,
+ tree);
static struct c_parm *c_parser_parameter_declaration (c_parser *, tree);
static tree c_parser_simple_asm_expr (c_parser *);
static tree c_parser_attributes (c_parser *);
static void c_parser_objc_method_definition (c_parser *);
static void c_parser_objc_methodprotolist (c_parser *);
static void c_parser_objc_methodproto (c_parser *);
-static tree c_parser_objc_method_decl (c_parser *, bool, tree *);
+static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *);
static tree c_parser_objc_type_name (c_parser *);
static tree c_parser_objc_protocol_refs (c_parser *);
static void c_parser_objc_try_catch_finally_statement (c_parser *);
case RID_AT_PROPERTY:
if (specs->attrs)
{
- c_parser_error (parser,
- "attributes may not be specified before" );
+ c_parser_error (parser, "unexpected attribute");
specs->attrs = NULL;
}
break;
{
struct c_declarator *declarator;
bool dummy = false;
+ timevar_id_t tv;
tree fnbody;
/* Declaring either one or more declarators (in which case we
should diagnose if there were no declaration specifiers) or a
c_pop_function_context ();
break;
}
+
+ if (DECL_DECLARED_INLINE_P (current_function_decl))
+ tv = TV_PARSE_INLINE;
+ else
+ tv = TV_PARSE_FUNC;
+ timevar_push (tv);
+
/* Parse old-style parameter declarations. ??? Attributes are
not allowed to start declaration specifiers here because of a
syntax conflict between a function declaration with attribute
add_stmt (fnbody);
finish_function ();
}
+
+ timevar_pop (tv);
break;
}
}
{
/* Parse an enum definition. */
struct c_enum_contents the_enum;
- tree type = start_enum (enum_loc, &the_enum, ident);
+ tree type;
tree postfix_attrs;
/* We chain the enumerators in reverse order, then put them in
forward order at the end. */
- tree values = NULL_TREE;
+ tree values;
+ timevar_push (TV_PARSE_ENUM);
+ type = start_enum (enum_loc, &the_enum, ident);
+ values = NULL_TREE;
c_parser_consume_token (parser);
while (true)
{
ret.kind = ctsk_tagdef;
ret.expr = NULL_TREE;
ret.expr_const_operands = true;
+ timevar_pop (TV_PARSE_ENUM);
return ret;
}
else if (!ident)
semicolon separated fields than comma separated fields, and
so we'll be minimizing the number of node traversals required
by chainon. */
- tree contents = NULL_TREE;
+ tree contents;
+ timevar_push (TV_PARSE_STRUCT);
+ contents = NULL_TREE;
c_parser_consume_token (parser);
/* Handle the Objective-C @defs construct,
e.g. foo(sizeof(struct{ @defs(ClassName) }));. */
ret.kind = ctsk_tagdef;
ret.expr = NULL_TREE;
ret.expr_const_operands = true;
+ timevar_pop (TV_PARSE_STRUCT);
return ret;
}
else if (!ident)
}
else
{
- struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs);
+ struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs,
+ NULL);
pop_scope ();
return ret;
}
/* Parse a parameter list (possibly empty), including the closing
parenthesis but not the opening one. ATTRS are the attributes at
- the start of the list. */
+ the start of the list. EXPR is NULL or an expression that needs to
+ be evaluated for the side effects of array size expressions in the
+ parameters. */
static struct c_arg_info *
-c_parser_parms_list_declarator (c_parser *parser, tree attrs)
+c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr)
{
bool bad_parm = false;
+
/* ??? Following the old parser, forward parameter declarations may
use abstract declarators, and if no real parameter declarations
follow the forward declarations then this is not diagnosed. Also
if (parm == NULL)
bad_parm = true;
else
- push_parm_decl (parm);
+ push_parm_decl (parm, &expr);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
tree new_attrs;
c_parser_consume_token (parser);
mark_forward_parm_decls ();
new_attrs = c_parser_attributes (parser);
- return c_parser_parms_list_declarator (parser, new_attrs);
+ return c_parser_parms_list_declarator (parser, new_attrs, expr);
}
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
c_parser_consume_token (parser);
if (bad_parm)
- {
- get_pending_sizes ();
- return NULL;
- }
+ return NULL;
else
- return get_parm_info (false);
+ return get_parm_info (false, expr);
}
if (!c_parser_require (parser, CPP_COMMA,
"expected %<;%>, %<,%> or %<)%>"))
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- get_pending_sizes ();
return NULL;
}
if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
{
c_parser_consume_token (parser);
if (bad_parm)
- {
- get_pending_sizes ();
- return NULL;
- }
+ return NULL;
else
- return get_parm_info (true);
+ return get_parm_info (true, expr);
}
else
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
- get_pending_sizes ();
return NULL;
}
}
c_parser_asm_string_literal (c_parser *parser)
{
tree str;
+ int save_flag = warn_overlength_strings;
+ warn_overlength_strings = 0;
if (c_parser_next_token_is (parser, CPP_STRING))
{
str = c_parser_peek_token (parser)->value;
c_parser_error (parser, "expected string literal");
str = NULL_TREE;
}
+ warn_overlength_strings = save_flag;
return str;
}
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
mexpr.value
- = objc_build_message_expr (build_tree_list (rec, args));
+ = objc_build_message_expr (rec, args);
mexpr.original_code = ERROR_MARK;
mexpr.original_type = NULL;
/* Now parse and process the remainder of the
{
tree block, cond, incr, save_break, save_cont, body;
/* The following are only used when parsing an ObjC foreach statement. */
- tree object_expression, collection_expression;
+ tree object_expression;
+ /* Silence the bogus uninitialized warning. */
+ tree collection_expression = NULL;
location_t loc = c_parser_peek_token (parser)->location;
location_t for_loc = c_parser_peek_token (parser)->location;
bool is_foreach_statement = false;
c_parser_consume_token (parser);
brace_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
- if (cur_stmt_list == NULL)
+ if (!building_stmt_list_p ())
{
error_at (loc, "braced-group within expression allowed "
"only inside a function");
args = c_parser_objc_message_args (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
- expr.value = objc_build_message_expr (build_tree_list (receiver,
- args));
+ expr.value = objc_build_message_expr (receiver, args);
break;
}
/* Else fall through to report error. */
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
- "extra semicolon in struct or union specified");
+ "extra semicolon");
c_parser_consume_token (parser);
continue;
}
/* Parse some comma-separated declarations. */
decls = c_parser_struct_declaration (parser);
- {
- /* Comma-separated instance variables are chained together in
- reverse order; add them one by one. */
- tree ivar = nreverse (decls);
- for (; ivar; ivar = DECL_CHAIN (ivar))
- objc_add_instance_variable (copy_node (ivar));
- }
+ if (decls == NULL)
+ {
+ /* There is a syntax error. We want to skip the offending
+ tokens up to the next ';' (included) or '}'
+ (excluded). */
+
+ /* First, skip manually a ')' or ']'. This is because they
+ reduce the nesting level, so c_parser_skip_until_found()
+ wouldn't be able to skip past them. */
+ c_token *token = c_parser_peek_token (parser);
+ if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE)
+ c_parser_consume_token (parser);
+
+ /* Then, do the standard skipping. */
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+
+ /* We hopefully recovered. Start normal parsing again. */
+ parser->error = false;
+ continue;
+ }
+ else
+ {
+ /* Comma-separated instance variables are chained together
+ in reverse order; add them one by one. */
+ tree ivar = nreverse (decls);
+ for (; ivar; ivar = DECL_CHAIN (ivar))
+ objc_add_instance_variable (copy_node (ivar));
+ }
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
}
static void
c_parser_objc_class_declaration (c_parser *parser)
{
- tree list = NULL_TREE;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS));
c_parser_consume_token (parser);
/* Any identifiers, including those declared as type names, are OK
return;
}
id = c_parser_peek_token (parser)->value;
- list = chainon (list, build_tree_list (NULL_TREE, id));
+ objc_declare_class (id);
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COMMA))
c_parser_consume_token (parser);
break;
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
- objc_declare_class (list);
}
/* Parse an objc-alias-declaration.
if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA
|| c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON)
{
- tree list = NULL_TREE;
/* Any identifiers, including those declared as type names, are
OK here. */
while (true)
break;
}
id = c_parser_peek_token (parser)->value;
- list = chainon (list, build_tree_list (NULL_TREE, id));
+ objc_declare_protocol (id, attributes);
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COMMA))
c_parser_consume_token (parser);
break;
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
- objc_declare_protocols (list, attributes);
}
else
{
c_parser_objc_method_definition (c_parser *parser)
{
bool is_class_method = c_parser_objc_method_type (parser);
- tree decl, attributes = NULL_TREE;
+ tree decl, attributes = NULL_TREE, expr = NULL_TREE;
parser->objc_pq_context = true;
- decl = c_parser_objc_method_decl (parser, is_class_method, &attributes);
+ decl = c_parser_objc_method_decl (parser, is_class_method, &attributes,
+ &expr);
if (decl == error_mark_node)
return; /* Bail here. */
}
parser->objc_pq_context = false;
- if (objc_start_method_definition (is_class_method, decl, attributes))
+ if (objc_start_method_definition (is_class_method, decl, attributes, expr))
{
add_stmt (c_parser_compound_statement (parser));
objc_finish_method_definition (current_function_decl);
/* Remember protocol qualifiers in prototypes. */
parser->objc_pq_context = true;
- decl = c_parser_objc_method_decl (parser, is_class_method, &attributes);
+ decl = c_parser_objc_method_decl (parser, is_class_method, &attributes,
+ NULL);
/* Forget protocol qualifiers now. */
parser->objc_pq_context = false;
*/
static tree
-c_parser_objc_method_decl (c_parser *parser, bool is_class_method, tree *attributes)
+c_parser_objc_method_decl (c_parser *parser, bool is_class_method,
+ tree *attributes, tree *expr)
{
tree type = NULL_TREE;
tree sel;
if (parm == NULL)
break;
parms = chainon (parms,
- build_tree_list (NULL_TREE, grokparm (parm)));
+ build_tree_list (NULL_TREE, grokparm (parm, expr)));
}
sel = list;
}
type_name = c_parser_type_name (parser);
if (type_name)
type = groktypename (type_name, NULL, NULL);
+
+ /* If the type is unknown, and error has already been produced and
+ we need to recover from the error. In that case, use NULL_TREE
+ for the type, as if no type had been specified; this will use the
+ default type ('id') which is good for error recovery. */
+ if (type == error_mark_node)
+ type = NULL_TREE;
+
return build_tree_list (quals, type);
}
if (parm == NULL)
parameter_declaration = error_mark_node;
else
- parameter_declaration = grokparm (parm);
+ parameter_declaration = grokparm (parm, NULL);
}
if (seen_open_paren)
c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>");
case RID_SETTER:
if (c_parser_next_token_is_not (parser, CPP_EQ))
{
- c_parser_error (parser,
- "getter/setter attribute must be followed by %<=%>");
+ if (keyword == RID_GETTER)
+ c_parser_error (parser,
+ "missing %<=%> (after %<getter%> attribute)");
+ else
+ c_parser_error (parser,
+ "missing %<=%> (after %<setter%> attribute)");
syntax_error = true;
break;
}
goto saw_error;
}
+ /* Arrange to pass the location of the assignment operator to
+ c_finish_omp_atomic. */
+ loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
{
location_t rhs_loc = c_parser_peek_token (parser)->location;
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