/* This file contains the definitions and documentation for the
additional tree codes used in the GNU C++ compiler (see tree.def
for the standard codes).
- Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998,
- 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998, 2003, 2004, 2005,
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2010, 2011
+ Free Software Foundation, Inc.
Hacked by Michael Tiemann (tiemann@cygnus.com)
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-
-/* Reference to the contents of an offset
- (a value whose type is an OFFSET_TYPE).
- Operand 0 is the object within which the offset is taken.
- Operand 1 is the offset. The language independent OFFSET_REF
- just won't work for us. */
-DEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2)
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+
+/* An OFFSET_REF is used in two situations:
+
+ 1. An expression of the form `A::m' where `A' is a class and `m' is
+ a non-static member. In this case, operand 0 will be a TYPE
+ (corresponding to `A') and operand 1 will be a FIELD_DECL,
+ BASELINK, or TEMPLATE_ID_EXPR (corresponding to `m').
+
+ The expression is a pointer-to-member if its address is taken,
+ but simply denotes a member of the object if its address is not
+ taken.
+
+ This form is only used during the parsing phase; once semantic
+ analysis has taken place they are eliminated.
+
+ 2. An expression of the form `x.*p'. In this case, operand 0 will
+ be an expression corresponding to `x' and operand 1 will be an
+ expression with pointer-to-member type. */
+DEFTREECODE (OFFSET_REF, "offset_ref", tcc_reference, 2)
/* A pointer-to-member constant. For a pointer-to-member constant
`X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X' and the
PTRMEM_CST_MEMBER is the _DECL for `Y'. */
-DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 2)
+DEFTREECODE (PTRMEM_CST, "ptrmem_cst", tcc_constant, 0)
/* For NEW_EXPR, operand 0 is the placement list.
Operand 1 is the new-declarator.
- Operand 2 is the initializer. */
-DEFTREECODE (NEW_EXPR, "nw_expr", 'e', 3)
-DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", 'e', 3)
+ Operand 2 is the number of elements in the array.
+ Operand 3 is the initializer. */
+DEFTREECODE (NEW_EXPR, "nw_expr", tcc_expression, 4)
+DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", tcc_expression, 3)
/* For DELETE_EXPR, operand 0 is the store to be destroyed.
Operand 1 is the value to pass to the destroying function
saying whether the store should be deallocated as well. */
-DEFTREECODE (DELETE_EXPR, "dl_expr", 'e', 2)
-DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", 'e', 2)
+DEFTREECODE (DELETE_EXPR, "dl_expr", tcc_expression, 2)
+DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", tcc_expression, 2)
/* Value is reference to particular overloaded class method.
- Operand 0 is the class name (an IDENTIFIER_NODE);
- operand 1 is the field (also an IDENTIFIER_NODE).
+ Operand 0 is the class, operand 1 is the field
The COMPLEXITY field holds the class level (usually 0). */
-DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 2)
+DEFTREECODE (SCOPE_REF, "scope_ref", tcc_reference, 2)
/* When composing an object with a member, this is the result.
Operand 0 is the object. Operand 1 is the member (usually
a dereferenced pointer to member). */
-DEFTREECODE (MEMBER_REF, "member_ref", 'r', 2)
+DEFTREECODE (MEMBER_REF, "member_ref", tcc_reference, 2)
/* Type conversion operator in C++. TREE_TYPE is type that this
operator converts to. Operand is expression to be converted. */
-DEFTREECODE (TYPE_EXPR, "type_expr", 'e', 1)
+DEFTREECODE (TYPE_EXPR, "type_expr", tcc_expression, 1)
-/* For AGGR_INIT_EXPR, operand 0 is function which performs initialization,
- operand 1 is argument list to initialization function,
- and operand 2 is the slot which was allocated for this expression. */
-DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", 'e', 3)
+/* AGGR_INIT_EXPRs have a variably-sized representation similar to
+ that of CALL_EXPRs. Operand 0 is an INTEGER_CST node containing the
+ operand count, operand 1 is the function which performs initialization,
+ operand 2 is the slot which was allocated for this expression, and
+ the remaining operands are the arguments to the initialization function. */
+DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", tcc_vl_exp, 3)
+
+/* Initialization of an array from another array, expressed at a high level
+ so that it works with TARGET_EXPR. Operand 0 is the target, operand 1
+ is the initializer. */
+DEFTREECODE (VEC_INIT_EXPR, "vec_init_expr", tcc_expression, 2)
/* A throw expression. operand 0 is the expression, if there was one,
else it is NULL_TREE. */
-DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 1)
+DEFTREECODE (THROW_EXPR, "throw_expr", tcc_expression, 1)
/* An empty class object. The TREE_TYPE gives the class type. We use
these to avoid actually creating instances of the empty classes. */
-DEFTREECODE (EMPTY_CLASS_EXPR, "empty_class_expr", 'e', 0)
+DEFTREECODE (EMPTY_CLASS_EXPR, "empty_class_expr", tcc_expression, 0)
+
+/* A reference to a member function or member functions from a base
+ class. BASELINK_FUNCTIONS gives the FUNCTION_DECL,
+ TEMPLATE_DECL, OVERLOAD, or TEMPLATE_ID_EXPR corresponding to the
+ functions. BASELINK_BINFO gives the base from which the functions
+ come, i.e., the base to which the `this' pointer must be converted
+ before the functions are called. BASELINK_ACCESS_BINFO gives the
+ base used to name the functions.
+
+ A BASELINK is an expression; the TREE_TYPE of the BASELINK gives
+ the type of the expression. This type is either a FUNCTION_TYPE,
+ METHOD_TYPE, or `unknown_type_node' indicating that the function is
+ overloaded. */
+DEFTREECODE (BASELINK, "baselink", tcc_exceptional, 0)
/* Template definition. The following fields have the specified uses,
although there are other macros in cp-tree.h that should be used for
accessing this data.
- DECL_ARGUMENTS template parm vector
- DECL_TEMPLATE_INFO template text &c
+ DECL_ARGUMENTS template parm vector
+ DECL_TEMPLATE_INFO template text &c
DECL_VINDEX list of instantiations already produced;
only done for functions so far
For class template:
- DECL_INITIAL associated templates (methods &c)
- DECL_RESULT null
+ DECL_INITIAL associated templates (methods &c)
+ DECL_TEMPLATE_RESULT null
For non-class templates:
TREE_TYPE type of object to be constructed
- DECL_RESULT decl for object to be created
- (e.g., FUNCTION_DECL with tmpl parms used)
+ DECL_TEMPLATE_RESULT decl for object to be created
+ (e.g., FUNCTION_DECL with tmpl parms used)
*/
-DEFTREECODE (TEMPLATE_DECL, "template_decl", 'd', 0)
+DEFTREECODE (TEMPLATE_DECL, "template_decl", tcc_declaration, 0)
/* Index into a template parameter list. The TEMPLATE_PARM_IDX gives
the index (from 0) of the parameter, while the TEMPLATE_PARM_LEVEL
gives the level (from 1) of the parameter.
Here's an example:
-
+
template <class T> // Index 0, Level 1.
struct S
{
template <class U, // Index 0, Level 2.
- class V> // Index 1, Level 2.
+ class V> // Index 1, Level 2.
void f();
- };
+ };
The DESCENDANTS will be a chain of TEMPLATE_PARM_INDEXs descended
from this one. The first descendant will have the same IDX, but
struct S<int>
{
template <class U, // Index 0, Level 1, Orig Level 2
- class V> // Index 1, Level 1, Orig Level 2
+ class V> // Index 1, Level 1, Orig Level 2
void f();
};
-
+
The LEVEL is the level of the parameter when we are worrying about
the types of things; the ORIG_LEVEL is the level when we are
worrying about instantiating things. */
-DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", 'x',
- /* The addition of (sizeof(tree) - 1) in the next expression
- is to handle the case when padding pushes us past an even
- multiple of sizeof(tree). */
- /* We used to try to calculate this using
- 1+3*sizeof(HOST_WIDE_INT), but that fails if alignment
- makes it bigger. */
- ((sizeof (template_parm_index) - sizeof (struct tree_common))
- + sizeof (tree) - 1)
- / sizeof (tree))
-
-/* Index into a template parameter list. This parameter must be a type.
- The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */
-DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", 't', 0)
+DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", tcc_exceptional, 0)
/* Index into a template parameter list for template template parameters.
- This parameter must be a type. The TYPE_FIELDS value will be a
+ This parameter must be a type. The TYPE_FIELDS value will be a
TEMPLATE_PARM_INDEX.
- It is used without template arguments like TT in C<TT>,
+ It is used without template arguments like TT in C<TT>,
TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO is NULL_TREE
and TYPE_NAME is a TEMPLATE_DECL. */
-DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 0)
+DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", tcc_type, 0)
-/* Like TEMPLATE_TEMPLATE_PARM it is used with bound template arguments
- like TT<int>.
- In this case, TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO contains the
- template name and its bound arguments. TYPE_NAME is a TYPE_DECL. */
-DEFTREECODE (BOUND_TEMPLATE_TEMPLATE_PARM, "bound_template_template_parm", 't', 0)
+/* The ordering of the following codes is optimized for the checking
+ macros in tree.h. Changing the order will degrade the speed of the
+ compiler. TEMPLATE_TYPE_PARM, TYPENAME_TYPE, TYPEOF_TYPE,
+ BOUND_TEMPLATE_TEMPLATE_PARM. */
+
+/* Index into a template parameter list. This parameter must be a type.
+ The type.values field will be a TEMPLATE_PARM_INDEX. */
+DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", tcc_type, 0)
/* A type designated by `typename T::t'. TYPE_CONTEXT is `T',
TYPE_NAME is an IDENTIFIER_NODE for `t'. If the type was named via
template-id, TYPENAME_TYPE_FULLNAME will hold the TEMPLATE_ID_EXPR.
- If TREE_TYPE is present, this type was generated by the implicit
- typename extension, and the TREE_TYPE is a _TYPE from a baseclass
- of `T'. */
-DEFTREECODE (TYPENAME_TYPE, "typename_type", 't', 0)
+ TREE_TYPE is always NULL. */
+DEFTREECODE (TYPENAME_TYPE, "typename_type", tcc_type, 0)
-/* A type designated by `__typeof (expr)'. TYPE_FIELDS is the
+/* A type designated by `__typeof (expr)'. TYPEOF_TYPE_EXPR is the
expression in question. */
-DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0)
+DEFTREECODE (TYPEOF_TYPE, "typeof_type", tcc_type, 0)
+
+/* Like TEMPLATE_TEMPLATE_PARM it is used with bound template arguments
+ like TT<int>.
+ In this case, TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO contains the
+ template name and its bound arguments. TYPE_NAME is a TYPE_DECL. */
+DEFTREECODE (BOUND_TEMPLATE_TEMPLATE_PARM, "bound_template_template_parm",
+ tcc_type, 0)
+
+/* For template template argument of the form `T::template C'.
+ TYPE_CONTEXT is `T', the template parameter dependent object.
+ TYPE_NAME is an IDENTIFIER_NODE for `C', the member class template. */
+DEFTREECODE (UNBOUND_CLASS_TEMPLATE, "unbound_class_template", tcc_type, 0)
-/* A using declaration. DECL_INITIAL contains the specified scope.
- This is not an alias, but is later expanded into multiple aliases. */
-DEFTREECODE (USING_DECL, "using_decl", 'd', 0)
+/* A using declaration. USING_DECL_SCOPE contains the specified
+ scope. In a member using decl, unless DECL_DEPENDENT_P is true,
+ USING_DECL_DECLS contains the _DECL or OVERLOAD so named. This is
+ not an alias, but is later expanded into multiple aliases. */
+DEFTREECODE (USING_DECL, "using_decl", tcc_declaration, 0)
-/* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */
-DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2)
+/* A using directive. The operand is USING_STMT_NAMESPACE. */
+DEFTREECODE (USING_STMT, "using_stmt", tcc_statement, 1)
+
+/* An un-parsed default argument. Holds a vector of input tokens and
+ a vector of places where the argument was instantiated before
+ parsing had occurred. */
+DEFTREECODE (DEFAULT_ARG, "default_arg", tcc_exceptional, 0)
+
+/* An uninstantiated noexcept-specification. DEFERRED_NOEXCEPT_PATTERN is
+ the pattern from the template, and DEFERRED_NOEXCEPT_ARGS are the
+ template arguments to substitute into the pattern when needed. */
+DEFTREECODE (DEFERRED_NOEXCEPT, "deferred_noexcept", tcc_exceptional, 0)
/* A template-id, like foo<int>. The first operand is the template.
- The second is the TREE_LIST or TREE_VEC of explicitly specified
- arguments. The template will be a FUNCTION_DECL, TEMPLATE_DECL, or
- an OVERLOAD. If the template-id refers to a member template, the
- template may be an IDENTIFIER_NODE. */
-DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", 'e', 2)
-
-/* An association between name and entity. Parameters are the scope
- and the (non-type) value. TREE_TYPE indicates the type bound to
- the name. */
-DEFTREECODE (CPLUS_BINDING, "binding", 'x', 2)
-
-/* A list-like node for chaining overloading candidates. TREE_TYPE is
- the original name, and the parameter is the FUNCTION_DECL. */
-DEFTREECODE (OVERLOAD, "overload", 'x', 1)
+ The second is NULL if there are no explicit arguments, or a
+ TREE_VEC of arguments. The template will be a FUNCTION_DECL,
+ TEMPLATE_DECL, or an OVERLOAD. If the template-id refers to a
+ member template, the template may be an IDENTIFIER_NODE. */
+DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", tcc_expression, 2)
-/* A generic wrapper for something not tree that we want to include in
- tree structure. */
-DEFTREECODE (WRAPPER, "wrapper", 'x', 1)
+/* A list-like node for chaining overloading candidates. TREE_TYPE is
+ the original name, and the parameter is the FUNCTION_DECL. */
+DEFTREECODE (OVERLOAD, "overload", tcc_exceptional, 0)
-/* Used to represent deferred name lookup for dependent names while
- parsing a template declaration. The first argument is an
- IDENTIFIER_NODE for the name in question. The TREE_TYPE is
- unused. */
-DEFTREECODE (LOOKUP_EXPR, "lookup_expr", 'e', 1)
+/* A pseudo-destructor, of the form "OBJECT.~DESTRUCTOR" or
+ "OBJECT.SCOPE::~DESTRUCTOR. The first operand is the OBJECT. The
+ second operand (if non-NULL) is the SCOPE. The third operand is
+ the TYPE node corresponding to the DESTRUCTOR. The type of the
+ first operand will always be a scalar type.
-/* Used to represent __PRETTY_FUNCTION__ in template bodies. */
-DEFTREECODE (FUNCTION_NAME, "function_name", 'e', 0)
+ The type of a PSEUDO_DTOR_EXPR is always "void", even though it can
+ be used as if it were a zero-argument function. We handle the
+ function-call case specially, and giving it "void" type prevents it
+ being used in expressions in ways that are not permitted. */
+DEFTREECODE (PSEUDO_DTOR_EXPR, "pseudo_dtor_expr", tcc_expression, 3)
/* A whole bunch of tree codes for the initial, superficial parsing of
templates. */
-DEFTREECODE (MODOP_EXPR, "modop_expr", 'e', 3)
-DEFTREECODE (CAST_EXPR, "cast_expr", '1', 1)
-DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", '1', 1)
-DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", '1', 1)
-DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", '1', 1)
-DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", '1', 1)
-DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2)
-DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1)
-DEFTREECODE (PSEUDO_DTOR_EXPR, "pseudo_dtor_expr", 'e', 3)
-
-/* A SUBOBJECT statement marks the point at which a sub-object is
- fully constructed. After this point, the SUBOBJECT_CLEANUP must be
- run if an exception is thrown before the end of the enclosing
- function. */
-DEFTREECODE (SUBOBJECT, "subobject", 'e', 1)
-/* An CTOR_STMT marks the beginning (if CTOR_BEGIN_P holds) or end of
- a constructor (if CTOR_END_P) holds. At the end of a constructor,
- the cleanups associated with any SUBOBJECT_CLEANUPS need no longer
- be run. */
-DEFTREECODE (CTOR_STMT, "ctor_stmt", 'e', 0)
+DEFTREECODE (MODOP_EXPR, "modop_expr", tcc_expression, 3)
+DEFTREECODE (CAST_EXPR, "cast_expr", tcc_unary, 1)
+DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", tcc_unary, 1)
+DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", tcc_unary, 1)
+DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", tcc_unary, 1)
+DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", tcc_unary, 1)
+DEFTREECODE (IMPLICIT_CONV_EXPR, "implicit_conv_expr", tcc_unary, 1)
+DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", tcc_expression, 2)
+DEFTREECODE (TYPEID_EXPR, "typeid_expr", tcc_expression, 1)
+DEFTREECODE (NOEXCEPT_EXPR, "noexcept_expr", tcc_unary, 1)
+
+/* A placeholder for an expression that is not type-dependent, but
+ does occur in a template. When an expression that is not
+ type-dependent appears in a larger expression, we must compute the
+ type of that larger expression. That computation would normally
+ modify the original expression, which would change the mangling of
+ that expression if it appeared in a template argument list. In
+ that situation, we create a NON_DEPENDENT_EXPR to take the place of
+ the original expression. The expression is the only operand -- it
+ is only needed for diagnostics. */
+DEFTREECODE (NON_DEPENDENT_EXPR, "non_dependent_expr", tcc_expression, 1)
+
+/* CTOR_INITIALIZER is a placeholder in template code for a call to
+ setup_vtbl_pointer (and appears in all functions, not just ctors). */
+DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", tcc_expression, 1)
+
+DEFTREECODE (TRY_BLOCK, "try_block", tcc_statement, 2)
+
+DEFTREECODE (EH_SPEC_BLOCK, "eh_spec_block", tcc_statement, 2)
+
+/* A HANDLER wraps a catch handler for the HANDLER_TYPE. If this is
+ CATCH_ALL_TYPE, then the handler catches all types. The declaration of
+ the catch variable is in HANDLER_PARMS, and the body block in
+ HANDLER_BODY. */
+DEFTREECODE (HANDLER, "handler", tcc_statement, 2)
+
+/* A MUST_NOT_THROW_EXPR wraps an expression that may not
+ throw, and must call terminate if it does. */
+DEFTREECODE (MUST_NOT_THROW_EXPR, "must_not_throw_expr", tcc_expression, 1)
+
/* A CLEANUP_STMT marks the point at which a declaration is fully
- constructed. If, after this point, the CLEANUP_DECL goes out of
- scope, the CLEANUP_EXPR must be run. */
-DEFTREECODE (CLEANUP_STMT, "cleanup_stmt", 'e', 2)
-/* A START_CATCH_STMT marks the beginning of a catch handler for the
- the START_CATCH_TYPE. If this is CATCH_ALL_TYPE, then the handler
- catches all types. */
-DEFTREECODE (START_CATCH_STMT, "start_catch_stmt", 'e', 0)
-DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2)
-DEFTREECODE (RETURN_INIT, "return_init", 'e', 2)
-DEFTREECODE (TRY_BLOCK, "try_block", 'e', 2)
-DEFTREECODE (HANDLER, "handler", 'e', 2)
-
-DEFTREECODE (TAG_DEFN, "tag_defn", 'e', 0)
-
-/* And some codes for expressing conversions for overload resolution. */
-
-DEFTREECODE (IDENTITY_CONV, "identity_conv", 'e', 1)
-DEFTREECODE (LVALUE_CONV, "lvalue_conv", 'e', 1)
-DEFTREECODE (QUAL_CONV, "qual_conv", 'e', 1)
-DEFTREECODE (STD_CONV, "std_conv", 'e', 1)
-DEFTREECODE (PTR_CONV, "ptr_conv", 'e', 1)
-DEFTREECODE (PMEM_CONV, "pmem_conv", 'e', 1)
-DEFTREECODE (BASE_CONV, "base_conv", 'e', 1)
-DEFTREECODE (REF_BIND, "ref_bind", 'e', 1)
-DEFTREECODE (USER_CONV, "user_conv", 'e', 2)
-DEFTREECODE (AMBIG_CONV, "ambig_conv", 'e', 1)
-DEFTREECODE (RVALUE_CONV, "rvalue_conv", 'e', 1)
+ constructed. The CLEANUP_EXPR is run on behalf of CLEANUP_DECL
+ when CLEANUP_BODY completes. */
+DEFTREECODE (CLEANUP_STMT, "cleanup_stmt", tcc_statement, 3)
+
+/* Represents an 'if' statement. The operands are IF_COND,
+ THEN_CLAUSE, and ELSE_CLAUSE, and the current scope, respectively. */
+/* ??? It is currently still necessary to distinguish between IF_STMT
+ and COND_EXPR for the benefit of templates. */
+DEFTREECODE (IF_STMT, "if_stmt", tcc_statement, 4)
+
+/* Used to represent a `for' statement. The operands are
+ FOR_INIT_STMT, FOR_COND, FOR_EXPR, and FOR_BODY, respectively. */
+DEFTREECODE (FOR_STMT, "for_stmt", tcc_statement, 5)
+
+/* Used to represent a range-based `for' statement. The operands are
+ RANGE_FOR_DECL, RANGE_FOR_EXPR, RANGE_FOR_BODY, and RANGE_FOR_SCOPE,
+ respectively. Only used in templates. */
+DEFTREECODE (RANGE_FOR_STMT, "range_for_stmt", tcc_statement, 4)
+
+/* Used to represent a 'while' statement. The operands are WHILE_COND
+ and WHILE_BODY, respectively. */
+DEFTREECODE (WHILE_STMT, "while_stmt", tcc_statement, 2)
+
+/* Used to represent a 'do' statement. The operands are DO_BODY and
+ DO_COND, respectively. */
+DEFTREECODE (DO_STMT, "do_stmt", tcc_statement, 2)
+
+/* Used to represent a 'break' statement. */
+DEFTREECODE (BREAK_STMT, "break_stmt", tcc_statement, 0)
+
+/* Used to represent a 'continue' statement. */
+DEFTREECODE (CONTINUE_STMT, "continue_stmt", tcc_statement, 0)
+
+/* Used to represent a 'switch' statement. The operands are
+ SWITCH_STMT_COND, SWITCH_STMT_BODY, SWITCH_STMT_TYPE, and
+ SWITCH_STMT_SCOPE, respectively. */
+DEFTREECODE (SWITCH_STMT, "switch_stmt", tcc_statement, 4)
+
+/* Used to represent an expression statement. Use `EXPR_STMT_EXPR' to
+ obtain the expression. */
+DEFTREECODE (EXPR_STMT, "expr_stmt", tcc_expression, 1)
+
+DEFTREECODE (TAG_DEFN, "tag_defn", tcc_expression, 0)
+
+/* Represents an 'offsetof' expression during template expansion. */
+DEFTREECODE (OFFSETOF_EXPR, "offsetof_expr", tcc_expression, 1)
+
+/* Represents a 'sizeof' expression during template expansion. */
+DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", tcc_expression, 1)
+
+/* Represents the -> operator during template expansion. */
+DEFTREECODE (ARROW_EXPR, "arrow_expr", tcc_expression, 1)
+
+/* Represents an '__alignof__' expression during template
+ expansion. */
+DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", tcc_expression, 1)
+
+/* Represents an Objective-C++ '@encode' expression during template
+ expansion. */
+DEFTREECODE (AT_ENCODE_EXPR, "at_encode_expr", tcc_expression, 1)
+
+/* A STMT_EXPR represents a statement-expression during template
+ expansion. This is the GCC extension { ( ... ) }. The
+ STMT_EXPR_STMT is the statement given by the expression. */
+DEFTREECODE (STMT_EXPR, "stmt_expr", tcc_expression, 1)
+
+/* Unary plus. Operand 0 is the expression to which the unary plus
+ is applied. */
+DEFTREECODE (UNARY_PLUS_EXPR, "unary_plus_expr", tcc_unary, 1)
+
+/** C++0x extensions. */
+
+/* A static assertion. This is a C++0x extension.
+ STATIC_ASSERT_CONDITION contains the condition that is being
+ checked. STATIC_ASSERT_MESSAGE contains the message (a string
+ literal) to be displayed if the condition fails to hold. */
+DEFTREECODE (STATIC_ASSERT, "static_assert", tcc_exceptional, 0)
+
+/* Represents an argument pack of types (or templates). An argument
+ pack stores zero or more arguments that will be used to instantiate
+ a parameter pack.
+
+ ARGUMENT_PACK_ARGS retrieves the arguments stored in the argument
+ pack.
+
+ Example:
+ template<typename... Values>
+ class tuple { ... };
+
+ tuple<int, float, double> t;
+
+ Values is a (template) parameter pack. When tuple<int, float,
+ double> is instantiated, the Values parameter pack is instantiated
+ with the argument pack <int, float, double>. ARGUMENT_PACK_ARGS will
+ be a TREE_VEC containing int, float, and double. */
+DEFTREECODE (TYPE_ARGUMENT_PACK, "type_argument_pack", tcc_type, 0)
+
+/* Represents an argument pack of values, which can be used either for
+ non-type template arguments or function call arguments.
+
+ NONTYPE_ARGUMENT_PACK plays precisely the same role as
+ TYPE_ARGUMENT_PACK, but will be used for packing non-type template
+ arguments (e.g., "int... Dimensions") or function arguments ("const
+ Args&... args"). */
+DEFTREECODE (NONTYPE_ARGUMENT_PACK, "nontype_argument_pack", tcc_expression, 1)
+
+/* Represents a type expression that will be expanded into a list of
+ types when instantiated with one or more argument packs.
+
+ PACK_EXPANSION_PATTERN retrieves the expansion pattern. This is
+ the type or expression that we will substitute into with each
+ argument in an argument pack.
+
+ SET_PACK_EXPANSION_PATTERN sets the expansion pattern.
+
+ PACK_EXPANSION_PARAMETER_PACKS contains a TREE_LIST of the parameter
+ packs that are used in this pack expansion.
+
+ Example:
+ template<typename... Values>
+ struct tied : tuple<Values&...> {
+ // ...
+ };
+
+ The derivation from tuple contains a TYPE_PACK_EXPANSION for the
+ template arguments. Its PACK_EXPANSION_PATTERN is "Values&" and its
+ PACK_EXPANSION_PARAMETER_PACKS will contain "Values". */
+DEFTREECODE (TYPE_PACK_EXPANSION, "type_pack_expansion", tcc_type, 0)
+
+/* Represents an expression that will be expanded into a list of
+ expressions when instantiated with one or more argument packs.
+
+ EXPR_PACK_EXPANSION plays precisely the same role as TYPE_PACK_EXPANSION,
+ but will be used for expressions. */
+DEFTREECODE (EXPR_PACK_EXPANSION, "expr_pack_expansion", tcc_expression, 3)
+
+/* Selects the Ith parameter out of an argument pack. This node will
+ be used when instantiating pack expansions; see
+ tsubst_pack_expansion.
+
+ ARGUMENT_PACK_SELECT_FROM_PACK contains the *_ARGUMENT_PACK node
+ from which the argument will be selected.
+
+ ARGUMENT_PACK_SELECT_INDEX contains the index into the argument
+ pack that will be returned by this ARGUMENT_PACK_SELECT node. The
+ index is a machine integer. */
+DEFTREECODE (ARGUMENT_PACK_SELECT, "argument_pack_select", tcc_exceptional, 0)
+
+/** C++ extensions. */
+
+/* Represents a trait expression during template expansion. */
+DEFTREECODE (TRAIT_EXPR, "trait_expr", tcc_exceptional, 0)
+
+/* A lambda expression. This is a C++0x extension.
+ LAMBDA_EXPR_DEFAULT_CAPTURE_MODE is an enum for the default, which may be
+ none.
+ LAMBDA_EXPR_CAPTURE_LIST holds the capture-list, including `this'.
+ LAMBDA_EXPR_THIS_CAPTURE goes straight to the capture of `this', if it exists.
+ LAMBDA_EXPR_PENDING_PROXIES is a vector of capture proxies which need to
+ be pushed once scope returns to the lambda.
+ LAMBDA_EXPR_MUTABLE_P signals whether this lambda was declared mutable.
+ LAMBDA_EXPR_RETURN_TYPE holds the return type, if it was specified. */
+DEFTREECODE (LAMBDA_EXPR, "lambda_expr", tcc_exceptional, 0)
+
+/* The declared type of an expression. This is a C++0x extension.
+ DECLTYPE_TYPE_EXPR is the expression whose type we are computing.
+ DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P states whether the
+ expression was parsed as an id-expression or a member access
+ expression. When false, it was parsed as a full expression.
+ DECLTYPE_FOR_LAMBDA_CAPTURE is set if we want lambda capture semantics.
+ DECLTYPE_FOR_LAMBDA_RETURN is set if we want lambda return deduction. */
+DEFTREECODE (DECLTYPE_TYPE, "decltype_type", tcc_type, 0)
+
+/* A type designated by `__underlying_type (type)'.
+ UNDERLYING_TYPE_TYPE is the type in question. */
+DEFTREECODE (UNDERLYING_TYPE, "underlying_type", tcc_type, 0)
+
+/* A type designated by one of the bases type traits.
+ BASES_TYPE is the type in question. */
+DEFTREECODE (BASES, "bases", tcc_type, 0)
+
+/* Used to represent the template information stored by template
+ specializations.
+ The accessors are:
+ TI_TEMPLATE the template declaration associated to the specialization
+ TI_ARGS the arguments of the template specialization
+ TI_TYPEDEFS_NEEDING_ACCESS_CHECKING the vector of typedefs used in
+ the pattern of the template for which access check is needed at template
+ instantiation time. */
+DEFTREECODE (TEMPLATE_INFO, "template_info", tcc_exceptional, 0)
/*
Local variables:
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