/* 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 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', 1) /* 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) /* Initialization of a vector, used in build_new. Operand 0 is the target of the initialization, operand 1 is the initializer, and operand 2 is the number of elements. */ DEFTREECODE (VEC_INIT_EXPR, "vec_init_expr", 'e', 3) /* 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_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) */ 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 // Index 0, Level 1. struct S { template // 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, we will have: struct S { template // 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(char*) - 1) in the next expression is to ensure against the case where sizeof(char*) does not evenly divide sizeof(HOST_WIDE_INT). */ 2 + ((3 * sizeof (HOST_WIDE_INT) + sizeof(char*) - 1) / sizeof (char*))) /* 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. This parameter must be a type. If it is used in signature of a template, TEMPLATE_INFO is NULL_TREE. Otherwise it is used to declare a type like TT. The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "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) /* A type designated by `__typeof (expr)'. TYPE_FIELDS is the expression in question. */ DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0) /* A thunk is a stub function. Thunks are used to implement multiple inheritance: At run-time, such a thunk subtracts THUNK_DELTA (an int, not a tree) from the this pointer, and then jumps to DECL_INITIAL (which is an ADDR_EXPR whose operand is a FUNCTION_DECL). Other kinds of thunks may be defined later. */ DEFTREECODE (THUNK_DECL, "thunk_decl", 'd', 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) /* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */ DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2) /* A template-id, like foo. 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) /* A node to remember a source position. */ DEFTREECODE (SRCLOC, "srcloc", 'x', 2) /* 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 (SIZEOF_EXPR, "sizeof_expr", '1', 1) DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", '1', 1) DEFTREECODE (ARROW_EXPR, "arrow_expr", 'e', 1) DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2) DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1) DEFTREECODE (EXPR_STMT, "expr_stmt", 'e', 1) DEFTREECODE (COMPOUND_STMT, "compound_stmt", 'e', 1) DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 3) DEFTREECODE (IF_STMT, "if_stmt", 'e', 3) DEFTREECODE (FOR_STMT, "for_stmt", 'e', 4) DEFTREECODE (WHILE_STMT, "while_stmt", 'e', 2) DEFTREECODE (DO_STMT, "do_stmt", 'e', 2) DEFTREECODE (RETURN_STMT, "return_stmt", 'e', 1) DEFTREECODE (BREAK_STMT, "break_stmt", 'e', 0) DEFTREECODE (CONTINUE_STMT, "continue_stmt", 'e', 0) DEFTREECODE (SWITCH_STMT, "switch_stmt", 'e', 2) DEFTREECODE (GOTO_STMT, "goto_stmt", 'e', 1) DEFTREECODE (ASM_STMT, "asm_stmt", 'e', 5) DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2) DEFTREECODE (CASE_LABEL, "case_label", 'e', 2) DEFTREECODE (RETURN_INIT, "return_init", 'e', 2) DEFTREECODE (TRY_BLOCK, "try_stmt", 'e', 2) DEFTREECODE (HANDLER, "catch_stmt", '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) /* Local variables: mode:c End: */