| /* 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, 2001 Free Software Foundation, Inc. |
| Hacked by Michael Tiemann (tiemann@cygnus.com) |
| |
| This file is part of GNU CC. |
| |
| GNU CC 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) |
| any later version. |
| |
| GNU CC 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) |
| |
| /* 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) |
| |
| /* 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) |
| |
| /* 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) |
| |
| /* 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). |
| The COMPLEXITY field holds the class level (usually 0). */ |
| DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 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) |
| |
| /* 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) |
| |
| /* 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) |
| |
| /* A throw expression. operand 0 is the expression, if there was one, |
| else it is NULL_TREE. */ |
| DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 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) |
| |
| /* 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_VINDEX list of instantiations already produced; |
| only done for functions so far |
| For class template: |
| DECL_INITIAL associated templates (methods &c) |
| DECL_TEMPLATE_RESULT null |
| For non-class templates: |
| TREE_TYPE type of object to be constructed |
| DECL_TEMPLATE_RESULT decl for object to be created |
| (e.g., FUNCTION_DECL with tmpl parms used) |
| */ |
| DEFTREECODE (TEMPLATE_DECL, "template_decl", 'd', 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. |
| 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 |
| its LEVEL will be one less. The TREE_CHAIN field is used to chain |
| together the descendants. The TEMPLATE_PARM_DECL is the |
| declaration of this parameter, either a TYPE_DECL or CONST_DECL. |
| The TEMPLATE_PARM_ORIG_LEVEL is the LEVEL of the most distant |
| parent, i.e., the LEVEL that the parameter originally had when it |
| was declared. For example, if we instantiate S<int>, we will have: |
| |
| struct S<int> |
| { |
| template <class U, // Index 0, 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) |
| |
| /* Index into a template parameter list for template template parameters. |
| 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>, |
| TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO is NULL_TREE |
| and TYPE_NAME is a TEMPLATE_DECL. */ |
| DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 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) |
| |
| /* 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) |
| |
| /* 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", 't', 0) |
| |
| /* A type designated by `__typeof (expr)'. TYPE_FIELDS is the |
| expression in question. */ |
| DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 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 directive. The operand is USING_STMT_NAMESPACE. */ |
| DEFTREECODE (USING_STMT, "using_directive", 'e', 1) |
| |
| /* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */ |
| DEFTREECODE (DEFAULT_ARG, "default_arg", 'x', 2) |
| |
| /* 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) |
| |
| /* A generic wrapper for something not tree that we want to include in |
| tree structure. */ |
| DEFTREECODE (WRAPPER, "wrapper", 'x', 1) |
| |
| /* 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 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) |
| /* 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) |
| /* 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", 'e', 2) |
| DEFTREECODE (RETURN_INIT, "return_init", 'e', 2) |
| DEFTREECODE (TRY_BLOCK, "try_block", 'e', 2) |
| DEFTREECODE (EH_SPEC_BLOCK, "eh_spec_block", 'e', 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", 'e', 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", 'e', 1) |
| |
| 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) |
| |
| /* |
| Local variables: |
| mode:c |
| End: |
| */ |