cp-tree.def revision 50397
13515Sache/* This file contains the definitions and documentation for the 250472Speter additional tree codes used in the GNU C++ compiler (see tree.def 33515Sache for the standard codes). 4156813Sru Copyright (C) 1987, 1988, 1990, 1993 Free Software Foundation, Inc. 5156813Sru Hacked by Michael Tiemann (tiemann@cygnus.com) 63515Sache 796462SruThis file is part of GNU CC. 874861Sru 912983SjkhGNU CC is free software; you can redistribute it and/or modify 10148297Skensmithit under the terms of the GNU General Public License as published by 113515Sachethe Free Software Foundation; either version 2, or (at your option) 126458Sacheany later version. 1339677Sjkh 143515SacheGNU CC is distributed in the hope that it will be useful, 1555755Sphantombut WITHOUT ANY WARRANTY; without even the implied warranty of 1655755SphantomMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1755755SphantomGNU General Public License for more details. 1855755Sphantom 1955755SphantomYou should have received a copy of the GNU General Public License 203957Sjkhalong with GNU CC; see the file COPYING. If not, write to 213515Sachethe Free Software Foundation, 59 Temple Place - Suite 330, 22145413StrhodesBoston, MA 02111-1307, USA. */ 23125503Sru 2417575Sjkh 25156813Sru/* Reference to the contents of an offset 26136666Sru (a value whose type is an OFFSET_TYPE). 27136666Sru Operand 0 is the object within which the offset is taken. 2855816Sgreen Operand 1 is the offset. The language independent OFFSET_REF 293515Sache just won't work for us. */ 3013987SmppDEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2) 3113987Smpp 3213987Smpp/* For NEW_EXPR, operand 0 is the placement list. 3381232Sru Operand 1 is the new-declarator. 3481232Sru Operand 2 is the initializer. */ 3513987SmppDEFTREECODE (NEW_EXPR, "nw_expr", 'e', 3) 3613987SmppDEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", 'e', 3) 3713987Smpp 3813987Smpp/* For DELETE_EXPR, operand 0 is the store to be destroyed. 3913987Smpp Operand 1 is the value to pass to the destroying function 4013987Smpp saying whether the store should be deallocated as well. */ 4113987SmppDEFTREECODE (DELETE_EXPR, "dl_expr", 'e', 2) 4213987SmppDEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", 'e', 2) 4314003Smpp 4439888Sjkh/* Value is reference to particular overloaded class method. 4539888Sjkh Operand 0 is the class name (an IDENTIFIER_NODE); 4613987Smpp operand 1 is the field (also an IDENTIFIER_NODE). 473515Sache The COMPLEXITY field holds the class level (usually 0). */ 48DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 2) 49 50/* When composing an object with a member, this is the result. 51 Operand 0 is the object. Operand 1 is the member (usually 52 a dereferenced pointer to member). */ 53DEFTREECODE (MEMBER_REF, "member_ref", 'r', 2) 54 55/* Type conversion operator in C++. TREE_TYPE is type that this 56 operator converts to. Operand is expression to be converted. */ 57DEFTREECODE (TYPE_EXPR, "type_expr", 'e', 1) 58 59/* For AGGR_INIT_EXPR, operand 0 is function which performs initialization, 60 operand 1 is argument list to initialization function, 61 and operand 2 is the slot which was allocated for this expression. */ 62DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", 'e', 3) 63 64/* A throw expression. operand 0 is the expression, if there was one, 65 else it is NULL_TREE. */ 66DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 1) 67 68/* Initialization of a vector, used in build_new. Operand 0 is the target 69 of the initialization, operand 1 is the initializer, and operand 2 is 70 the number of elements. */ 71DEFTREECODE (VEC_INIT_EXPR, "vec_init_expr", 'e', 3) 72 73/* Template definition. The following fields have the specified uses, 74 although there are other macros in cp-tree.h that should be used for 75 accessing this data. 76 DECL_ARGUMENTS template parm vector 77 DECL_TEMPLATE_INFO template text &c 78 DECL_VINDEX list of instantiations already produced; 79 only done for functions so far 80 For class template: 81 DECL_INITIAL associated templates (methods &c) 82 DECL_RESULT null 83 For non-class templates: 84 TREE_TYPE type of object to be constructed 85 DECL_RESULT decl for object to be created 86 (e.g., FUNCTION_DECL with tmpl parms used) 87 */ 88DEFTREECODE (TEMPLATE_DECL, "template_decl", 'd', 0) 89 90/* Index into a template parameter list. The TEMPLATE_PARM_IDX gives 91 the index (from 0) of the parameter, while the TEMPLATE_PARM_LEVEL 92 gives the level (from 1) of the parameter. 93 94 Here's an example: 95 96 template <class T> // Index 0, Level 1. 97 struct S 98 { 99 template <class U, // Index 0, Level 2. 100 class V> // Index 1, Level 2. 101 void f(); 102 }; 103 104 The DESCENDANTS will be a chain of TEMPLATE_PARM_INDEXs descended 105 from this one. The first descendant will have the same IDX, but 106 its LEVEL will be one less. The TREE_CHAIN field is used to chain 107 together the descendants. The TEMPLATE_PARM_DECL is the 108 declaration of this parameter, either a TYPE_DECL or CONST_DECL. 109 The TEMPLATE_PARM_ORIG_LEVEL is the LEVEL of the most distant 110 parent, i.e., the LEVEL that the parameter originally had when it 111 was declared. For example, if we instantiate S<int>, we will have: 112 113 struct S<int> 114 { 115 template <class U, // Index 0, Level 1, Orig Level 2 116 class V> // Index 1, Level 1, Orig Level 2 117 void f(); 118 }; 119 120 The LEVEL is the level of the parameter when we are worrying about 121 the types of things; the ORIG_LEVEL is the level when we are 122 worrying about instantiating things. */ 123DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", 'x', 124 /* The addition of (sizeof(char*) - 1) in the next 125 expression is to ensure against the case where 126 sizeof(char*) does not evenly divide 127 sizeof(HOST_WIDE_INT). */ 128 2 + ((3 * sizeof (HOST_WIDE_INT) + sizeof(char*) - 1) 129 / sizeof (char*))) 130 131/* Index into a template parameter list. This parameter must be a type. 132 The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ 133DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", 't', 0) 134 135/* Index into a template parameter list. This parameter must be a type. 136 If it is used in signature of a template, TEMPLATE_INFO is NULL_TREE. 137 Otherwise it is used to declare a type like TT<int>. 138 The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ 139DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 0) 140 141/* A type designated by 'typename T::t'. */ 142DEFTREECODE (TYPENAME_TYPE, "typename_type", 't', 0) 143 144/* A thunk is a stub function. 145 146 Thunks are used to implement multiple inheritance: 147 At run-time, such a thunk subtracts THUNK_DELTA (an int, not a tree) 148 from the this pointer, and then jumps to DECL_INITIAL 149 (which is an ADDR_EXPR whose operand is a FUNCTION_DECL). 150 151 Other kinds of thunks may be defined later. */ 152DEFTREECODE (THUNK_DECL, "thunk_decl", 'd', 0) 153 154/* A using declaration. DECL_INITIAL contains the specified scope. 155 This is not an alias, but is later expanded into multiple aliases. */ 156DEFTREECODE (USING_DECL, "using_decl", 'd', 0) 157 158/* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */ 159DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2) 160 161/* A template-id, like foo<int>. The first operand is the template. 162 The second is the list of explicitly specified arguments. The 163 template will be a FUNCTION_DECL, TEMPLATE_DECL, or a list of 164 overloaded functions and templates if the template-id refers to 165 a global template. If the template-id refers to a member template, 166 the template may be an IDENTIFIER_NODE. */ 167DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", 'e', 2) 168 169/* An association between namespace and entity. Parameters are the 170 scope and the (non-type) value. 171 TREE_TYPE indicates the type bound to the name. */ 172DEFTREECODE (CPLUS_BINDING, "binding", 'x', 2) 173 174/* A list-like node for chaining overloading candidates. TREE_TYPE is 175 the original name, and the parameter is the FUNCTION_DECL. */ 176DEFTREECODE (OVERLOAD, "overload", 'x', 1) 177 178/* A generic wrapper for something not tree that we want to include in 179 tree structure. */ 180DEFTREECODE (WRAPPER, "wrapper", 'x', 1) 181 182/* A node to remember a source position. */ 183DEFTREECODE (SRCLOC, "srcloc", 'x', 2) 184 185/* A whole bunch of tree codes for the initial, superficial parsing of 186 templates. */ 187DEFTREECODE (LOOKUP_EXPR, "lookup_expr", 'e', 2) 188DEFTREECODE (MODOP_EXPR, "modop_expr", 'e', 3) 189DEFTREECODE (CAST_EXPR, "cast_expr", '1', 1) 190DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", '1', 1) 191DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", '1', 1) 192DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", '1', 1) 193DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", '1', 1) 194DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", '1', 1) 195DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", '1', 1) 196DEFTREECODE (ARROW_EXPR, "arrow_expr", 'e', 1) 197DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2) 198DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1) 199 200DEFTREECODE (EXPR_STMT, "expr_stmt", 'e', 1) 201DEFTREECODE (COMPOUND_STMT, "compound_stmt", 'e', 1) 202DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 3) 203DEFTREECODE (IF_STMT, "if_stmt", 'e', 3) 204DEFTREECODE (FOR_STMT, "for_stmt", 'e', 4) 205DEFTREECODE (WHILE_STMT, "while_stmt", 'e', 2) 206DEFTREECODE (DO_STMT, "do_stmt", 'e', 2) 207DEFTREECODE (RETURN_STMT, "return_stmt", 'e', 1) 208DEFTREECODE (BREAK_STMT, "break_stmt", 'e', 0) 209DEFTREECODE (CONTINUE_STMT, "continue_stmt", 'e', 0) 210DEFTREECODE (SWITCH_STMT, "switch_stmt", 'e', 2) 211DEFTREECODE (GOTO_STMT, "goto_stmt", 'e', 1) 212DEFTREECODE (ASM_STMT, "asm_stmt", 'e', 5) 213 214DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2) 215DEFTREECODE (CASE_LABEL, "case_label", 'e', 2) 216DEFTREECODE (RETURN_INIT, "return_init", 'e', 2) 217DEFTREECODE (TRY_BLOCK, "try_stmt", 'e', 2) 218DEFTREECODE (HANDLER, "catch_stmt", 'e', 2) 219 220DEFTREECODE (TAG_DEFN, "tag_defn", 'e', 0) 221 222/* And some codes for expressing conversions for overload resolution. */ 223 224DEFTREECODE (IDENTITY_CONV, "identity_conv", 'e', 1) 225DEFTREECODE (LVALUE_CONV, "lvalue_conv", 'e', 1) 226DEFTREECODE (QUAL_CONV, "qual_conv", 'e', 1) 227DEFTREECODE (STD_CONV, "std_conv", 'e', 1) 228DEFTREECODE (PTR_CONV, "ptr_conv", 'e', 1) 229DEFTREECODE (PMEM_CONV, "pmem_conv", 'e', 1) 230DEFTREECODE (BASE_CONV, "base_conv", 'e', 1) 231DEFTREECODE (REF_BIND, "ref_bind", 'e', 1) 232DEFTREECODE (USER_CONV, "user_conv", 'e', 2) 233DEFTREECODE (AMBIG_CONV, "ambig_conv", 'e', 1) 234DEFTREECODE (RVALUE_CONV, "rvalue_conv", 'e', 1) 235 236/* 237Local variables: 238mode:c 239End: 240*/ 241