cp-tree.def revision 52284
1/* This file contains the definitions and documentation for the 2 additional tree codes used in the GNU C++ compiler (see tree.def 3 for the standard codes). 4 Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998 Free Software Foundation, Inc. 5 Hacked by Michael Tiemann (tiemann@cygnus.com) 6 7This file is part of GNU CC. 8 9GNU CC is free software; you can redistribute it and/or modify 10it under the terms of the GNU General Public License as published by 11the Free Software Foundation; either version 2, or (at your option) 12any later version. 13 14GNU CC is distributed in the hope that it will be useful, 15but WITHOUT ANY WARRANTY; without even the implied warranty of 16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17GNU General Public License for more details. 18 19You should have received a copy of the GNU General Public License 20along with GNU CC; see the file COPYING. If not, write to 21the Free Software Foundation, 59 Temple Place - Suite 330, 22Boston, MA 02111-1307, USA. */ 23 24 25/* Reference to the contents of an offset 26 (a value whose type is an OFFSET_TYPE). 27 Operand 0 is the object within which the offset is taken. 28 Operand 1 is the offset. The language independent OFFSET_REF 29 just won't work for us. */ 30DEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2) 31 32/* A pointer-to-member constant. For a pointer-to-member constant 33 `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X' and the 34 PTRMEM_CST_MEMBER is the _DECL for `Y'. */ 35DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 1) 36 37/* For NEW_EXPR, operand 0 is the placement list. 38 Operand 1 is the new-declarator. 39 Operand 2 is the initializer. */ 40DEFTREECODE (NEW_EXPR, "nw_expr", 'e', 3) 41DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", 'e', 3) 42 43/* For DELETE_EXPR, operand 0 is the store to be destroyed. 44 Operand 1 is the value to pass to the destroying function 45 saying whether the store should be deallocated as well. */ 46DEFTREECODE (DELETE_EXPR, "dl_expr", 'e', 2) 47DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", 'e', 2) 48 49/* Value is reference to particular overloaded class method. 50 Operand 0 is the class name (an IDENTIFIER_NODE); 51 operand 1 is the field (also an IDENTIFIER_NODE). 52 The COMPLEXITY field holds the class level (usually 0). */ 53DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 2) 54 55/* When composing an object with a member, this is the result. 56 Operand 0 is the object. Operand 1 is the member (usually 57 a dereferenced pointer to member). */ 58DEFTREECODE (MEMBER_REF, "member_ref", 'r', 2) 59 60/* Type conversion operator in C++. TREE_TYPE is type that this 61 operator converts to. Operand is expression to be converted. */ 62DEFTREECODE (TYPE_EXPR, "type_expr", 'e', 1) 63 64/* For AGGR_INIT_EXPR, operand 0 is function which performs initialization, 65 operand 1 is argument list to initialization function, 66 and operand 2 is the slot which was allocated for this expression. */ 67DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", 'e', 3) 68 69/* A throw expression. operand 0 is the expression, if there was one, 70 else it is NULL_TREE. */ 71DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 1) 72 73/* Initialization of a vector, used in build_new. Operand 0 is the target 74 of the initialization, operand 1 is the initializer, and operand 2 is 75 the number of elements. */ 76DEFTREECODE (VEC_INIT_EXPR, "vec_init_expr", 'e', 3) 77 78/* Template definition. The following fields have the specified uses, 79 although there are other macros in cp-tree.h that should be used for 80 accessing this data. 81 DECL_ARGUMENTS template parm vector 82 DECL_TEMPLATE_INFO template text &c 83 DECL_VINDEX list of instantiations already produced; 84 only done for functions so far 85 For class template: 86 DECL_INITIAL associated templates (methods &c) 87 DECL_RESULT null 88 For non-class templates: 89 TREE_TYPE type of object to be constructed 90 DECL_RESULT decl for object to be created 91 (e.g., FUNCTION_DECL with tmpl parms used) 92 */ 93DEFTREECODE (TEMPLATE_DECL, "template_decl", 'd', 0) 94 95/* Index into a template parameter list. The TEMPLATE_PARM_IDX gives 96 the index (from 0) of the parameter, while the TEMPLATE_PARM_LEVEL 97 gives the level (from 1) of the parameter. 98 99 Here's an example: 100 101 template <class T> // Index 0, Level 1. 102 struct S 103 { 104 template <class U, // Index 0, Level 2. 105 class V> // Index 1, Level 2. 106 void f(); 107 }; 108 109 The DESCENDANTS will be a chain of TEMPLATE_PARM_INDEXs descended 110 from this one. The first descendant will have the same IDX, but 111 its LEVEL will be one less. The TREE_CHAIN field is used to chain 112 together the descendants. The TEMPLATE_PARM_DECL is the 113 declaration of this parameter, either a TYPE_DECL or CONST_DECL. 114 The TEMPLATE_PARM_ORIG_LEVEL is the LEVEL of the most distant 115 parent, i.e., the LEVEL that the parameter originally had when it 116 was declared. For example, if we instantiate S<int>, we will have: 117 118 struct S<int> 119 { 120 template <class U, // Index 0, Level 1, Orig Level 2 121 class V> // Index 1, Level 1, Orig Level 2 122 void f(); 123 }; 124 125 The LEVEL is the level of the parameter when we are worrying about 126 the types of things; the ORIG_LEVEL is the level when we are 127 worrying about instantiating things. */ 128DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", 'x', 129 /* The addition of (sizeof(char*) - 1) in the next 130 expression is to ensure against the case where 131 sizeof(char*) does not evenly divide 132 sizeof(HOST_WIDE_INT). */ 133 2 + ((3 * sizeof (HOST_WIDE_INT) + sizeof(char*) - 1) 134 / sizeof (char*))) 135 136/* Index into a template parameter list. This parameter must be a type. 137 The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ 138DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", 't', 0) 139 140/* Index into a template parameter list. This parameter must be a type. 141 If it is used in signature of a template, TEMPLATE_INFO is NULL_TREE. 142 Otherwise it is used to declare a type like TT<int>. 143 The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ 144DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 0) 145 146/* A type designated by `typename T::t'. TYPE_CONTEXT is `T', 147 TYPE_NAME is an IDENTIFIER_NODE for `t'. If the type was named via 148 template-id, TYPENAME_TYPE_FULLNAME will hold the TEMPLATE_ID_EXPR. 149 If TREE_TYPE is present, this type was generated by the implicit 150 typename extension, and the TREE_TYPE is a _TYPE from a baseclass 151 of `T'. */ 152DEFTREECODE (TYPENAME_TYPE, "typename_type", 't', 0) 153 154/* A type designated by `__typeof (expr)'. TYPE_FIELDS is the 155 expression in question. */ 156DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0) 157 158/* A thunk is a stub function. 159 160 Thunks are used to implement multiple inheritance: 161 At run-time, such a thunk subtracts THUNK_DELTA (an int, not a tree) 162 from the this pointer, and then jumps to DECL_INITIAL 163 (which is an ADDR_EXPR whose operand is a FUNCTION_DECL). 164 165 Other kinds of thunks may be defined later. */ 166DEFTREECODE (THUNK_DECL, "thunk_decl", 'd', 0) 167 168/* A using declaration. DECL_INITIAL contains the specified scope. 169 This is not an alias, but is later expanded into multiple aliases. */ 170DEFTREECODE (USING_DECL, "using_decl", 'd', 0) 171 172/* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */ 173DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2) 174 175/* A template-id, like foo<int>. The first operand is the template. 176 The second is the TREE_LIST or TREE_VEC of explicitly specified 177 arguments. The template will be a FUNCTION_DECL, TEMPLATE_DECL, or 178 an OVERLOAD. If the template-id refers to a member template, the 179 template may be an IDENTIFIER_NODE. */ 180DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", 'e', 2) 181 182/* An association between name and entity. Parameters are the scope 183 and the (non-type) value. TREE_TYPE indicates the type bound to 184 the name. */ 185DEFTREECODE (CPLUS_BINDING, "binding", 'x', 2) 186 187/* A list-like node for chaining overloading candidates. TREE_TYPE is 188 the original name, and the parameter is the FUNCTION_DECL. */ 189DEFTREECODE (OVERLOAD, "overload", 'x', 1) 190 191/* A generic wrapper for something not tree that we want to include in 192 tree structure. */ 193DEFTREECODE (WRAPPER, "wrapper", 'x', 1) 194 195/* A node to remember a source position. */ 196DEFTREECODE (SRCLOC, "srcloc", 'x', 2) 197 198/* Used to represent deferred name lookup for dependent names while 199 parsing a template declaration. The first argument is an 200 IDENTIFIER_NODE for the name in question. The TREE_TYPE is 201 unused. */ 202DEFTREECODE (LOOKUP_EXPR, "lookup_expr", 'e', 1) 203 204/* A whole bunch of tree codes for the initial, superficial parsing of 205 templates. */ 206DEFTREECODE (MODOP_EXPR, "modop_expr", 'e', 3) 207DEFTREECODE (CAST_EXPR, "cast_expr", '1', 1) 208DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", '1', 1) 209DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", '1', 1) 210DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", '1', 1) 211DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", '1', 1) 212DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", '1', 1) 213DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", '1', 1) 214DEFTREECODE (ARROW_EXPR, "arrow_expr", 'e', 1) 215DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2) 216DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1) 217 218DEFTREECODE (EXPR_STMT, "expr_stmt", 'e', 1) 219DEFTREECODE (COMPOUND_STMT, "compound_stmt", 'e', 1) 220DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 3) 221DEFTREECODE (IF_STMT, "if_stmt", 'e', 3) 222DEFTREECODE (FOR_STMT, "for_stmt", 'e', 4) 223DEFTREECODE (WHILE_STMT, "while_stmt", 'e', 2) 224DEFTREECODE (DO_STMT, "do_stmt", 'e', 2) 225DEFTREECODE (RETURN_STMT, "return_stmt", 'e', 1) 226DEFTREECODE (BREAK_STMT, "break_stmt", 'e', 0) 227DEFTREECODE (CONTINUE_STMT, "continue_stmt", 'e', 0) 228DEFTREECODE (SWITCH_STMT, "switch_stmt", 'e', 2) 229DEFTREECODE (GOTO_STMT, "goto_stmt", 'e', 1) 230DEFTREECODE (ASM_STMT, "asm_stmt", 'e', 5) 231 232DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2) 233DEFTREECODE (CASE_LABEL, "case_label", 'e', 2) 234DEFTREECODE (RETURN_INIT, "return_init", 'e', 2) 235DEFTREECODE (TRY_BLOCK, "try_stmt", 'e', 2) 236DEFTREECODE (HANDLER, "catch_stmt", 'e', 2) 237 238DEFTREECODE (TAG_DEFN, "tag_defn", 'e', 0) 239 240/* And some codes for expressing conversions for overload resolution. */ 241 242DEFTREECODE (IDENTITY_CONV, "identity_conv", 'e', 1) 243DEFTREECODE (LVALUE_CONV, "lvalue_conv", 'e', 1) 244DEFTREECODE (QUAL_CONV, "qual_conv", 'e', 1) 245DEFTREECODE (STD_CONV, "std_conv", 'e', 1) 246DEFTREECODE (PTR_CONV, "ptr_conv", 'e', 1) 247DEFTREECODE (PMEM_CONV, "pmem_conv", 'e', 1) 248DEFTREECODE (BASE_CONV, "base_conv", 'e', 1) 249DEFTREECODE (REF_BIND, "ref_bind", 'e', 1) 250DEFTREECODE (USER_CONV, "user_conv", 'e', 2) 251DEFTREECODE (AMBIG_CONV, "ambig_conv", 'e', 1) 252DEFTREECODE (RVALUE_CONV, "rvalue_conv", 'e', 1) 253 254/* 255Local variables: 256mode:c 257End: 258*/ 259