cp-tree.def revision 96263
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, 5 1999, 2000, 2001 Free Software Foundation, Inc. 6 Hacked by Michael Tiemann (tiemann@cygnus.com) 7 8This file is part of GNU CC. 9 10GNU CC is free software; you can redistribute it and/or modify 11it under the terms of the GNU General Public License as published by 12the Free Software Foundation; either version 2, or (at your option) 13any later version. 14 15GNU CC is distributed in the hope that it will be useful, 16but WITHOUT ANY WARRANTY; without even the implied warranty of 17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18GNU General Public License for more details. 19 20You should have received a copy of the GNU General Public License 21along with GNU CC; see the file COPYING. If not, write to 22the Free Software Foundation, 59 Temple Place - Suite 330, 23Boston, MA 02111-1307, USA. */ 24 25 26/* Reference to the contents of an offset 27 (a value whose type is an OFFSET_TYPE). 28 Operand 0 is the object within which the offset is taken. 29 Operand 1 is the offset. The language independent OFFSET_REF 30 just won't work for us. */ 31DEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2) 32 33/* A pointer-to-member constant. For a pointer-to-member constant 34 `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X' and the 35 PTRMEM_CST_MEMBER is the _DECL for `Y'. */ 36DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 2) 37 38/* For NEW_EXPR, operand 0 is the placement list. 39 Operand 1 is the new-declarator. 40 Operand 2 is the initializer. */ 41DEFTREECODE (NEW_EXPR, "nw_expr", 'e', 3) 42DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", 'e', 3) 43 44/* For DELETE_EXPR, operand 0 is the store to be destroyed. 45 Operand 1 is the value to pass to the destroying function 46 saying whether the store should be deallocated as well. */ 47DEFTREECODE (DELETE_EXPR, "dl_expr", 'e', 2) 48DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", 'e', 2) 49 50/* Value is reference to particular overloaded class method. 51 Operand 0 is the class name (an IDENTIFIER_NODE); 52 operand 1 is the field (also an IDENTIFIER_NODE). 53 The COMPLEXITY field holds the class level (usually 0). */ 54DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 2) 55 56/* When composing an object with a member, this is the result. 57 Operand 0 is the object. Operand 1 is the member (usually 58 a dereferenced pointer to member). */ 59DEFTREECODE (MEMBER_REF, "member_ref", 'r', 2) 60 61/* Type conversion operator in C++. TREE_TYPE is type that this 62 operator converts to. Operand is expression to be converted. */ 63DEFTREECODE (TYPE_EXPR, "type_expr", 'e', 1) 64 65/* For AGGR_INIT_EXPR, operand 0 is function which performs initialization, 66 operand 1 is argument list to initialization function, 67 and operand 2 is the slot which was allocated for this expression. */ 68DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", 'e', 3) 69 70/* A throw expression. operand 0 is the expression, if there was one, 71 else it is NULL_TREE. */ 72DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 1) 73 74/* An empty class object. The TREE_TYPE gives the class type. We use 75 these to avoid actually creating instances of the empty classes. */ 76DEFTREECODE (EMPTY_CLASS_EXPR, "empty_class_expr", 'e', 0) 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_TEMPLATE_RESULT null 88 For non-class templates: 89 TREE_TYPE type of object to be constructed 90 DECL_TEMPLATE_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(tree) - 1) in the next expression 130 is to handle the case when padding pushes us past an even 131 multiple of sizeof(tree). */ 132 /* We used to try to calculate this using 133 1+3*sizeof(HOST_WIDE_INT), but that fails if alignment 134 makes it bigger. */ 135 ((sizeof (template_parm_index) - sizeof (struct tree_common)) 136 + sizeof (tree) - 1) 137 / sizeof (tree)) 138 139/* Index into a template parameter list. This parameter must be a type. 140 The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */ 141DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", 't', 0) 142 143/* Index into a template parameter list for template template parameters. 144 This parameter must be a type. The TYPE_FIELDS value will be a 145 TEMPLATE_PARM_INDEX. 146 147 It is used without template arguments like TT in C<TT>, 148 TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO is NULL_TREE 149 and TYPE_NAME is a TEMPLATE_DECL. */ 150DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 0) 151 152/* Like TEMPLATE_TEMPLATE_PARM it is used with bound template arguments 153 like TT<int>. 154 In this case, TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO contains the 155 template name and its bound arguments. TYPE_NAME is a TYPE_DECL. */ 156DEFTREECODE (BOUND_TEMPLATE_TEMPLATE_PARM, "bound_template_template_parm", 't', 0) 157 158/* A type designated by `typename T::t'. TYPE_CONTEXT is `T', 159 TYPE_NAME is an IDENTIFIER_NODE for `t'. If the type was named via 160 template-id, TYPENAME_TYPE_FULLNAME will hold the TEMPLATE_ID_EXPR. 161 If TREE_TYPE is present, this type was generated by the implicit 162 typename extension, and the TREE_TYPE is a _TYPE from a baseclass 163 of `T'. */ 164DEFTREECODE (TYPENAME_TYPE, "typename_type", 't', 0) 165 166/* For template template argument of the form `T::template C'. 167 TYPE_CONTEXT is `T', the template parameter dependent object. 168 TYPE_NAME is an IDENTIFIER_NODE for `C', the member class template. */ 169DEFTREECODE (UNBOUND_CLASS_TEMPLATE, "unbound_class_template", 't', 0) 170 171/* A type designated by `__typeof (expr)'. TYPE_FIELDS is the 172 expression in question. */ 173DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0) 174 175/* A using declaration. DECL_INITIAL contains the specified scope. 176 This is not an alias, but is later expanded into multiple aliases. */ 177DEFTREECODE (USING_DECL, "using_decl", 'd', 0) 178 179/* A using directive. The operand is USING_STMT_NAMESPACE. */ 180DEFTREECODE (USING_STMT, "using_directive", 'e', 1) 181 182/* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */ 183DEFTREECODE (DEFAULT_ARG, "default_arg", 'x', 2) 184 185/* A template-id, like foo<int>. The first operand is the template. 186 The second is the TREE_LIST or TREE_VEC of explicitly specified 187 arguments. The template will be a FUNCTION_DECL, TEMPLATE_DECL, or 188 an OVERLOAD. If the template-id refers to a member template, the 189 template may be an IDENTIFIER_NODE. */ 190DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", 'e', 2) 191 192/* An association between name and entity. Parameters are the scope 193 and the (non-type) value. TREE_TYPE indicates the type bound to 194 the name. */ 195DEFTREECODE (CPLUS_BINDING, "binding", 'x', 2) 196 197/* A list-like node for chaining overloading candidates. TREE_TYPE is 198 the original name, and the parameter is the FUNCTION_DECL. */ 199DEFTREECODE (OVERLOAD, "overload", 'x', 1) 200 201/* A generic wrapper for something not tree that we want to include in 202 tree structure. */ 203DEFTREECODE (WRAPPER, "wrapper", 'x', 1) 204 205/* Used to represent deferred name lookup for dependent names while 206 parsing a template declaration. The first argument is an 207 IDENTIFIER_NODE for the name in question. The TREE_TYPE is 208 unused. */ 209DEFTREECODE (LOOKUP_EXPR, "lookup_expr", 'e', 1) 210 211/* A whole bunch of tree codes for the initial, superficial parsing of 212 templates. */ 213DEFTREECODE (MODOP_EXPR, "modop_expr", 'e', 3) 214DEFTREECODE (CAST_EXPR, "cast_expr", '1', 1) 215DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", '1', 1) 216DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", '1', 1) 217DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", '1', 1) 218DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", '1', 1) 219DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2) 220DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1) 221DEFTREECODE (PSEUDO_DTOR_EXPR, "pseudo_dtor_expr", 'e', 3) 222 223/* A SUBOBJECT statement marks the point at which a sub-object is 224 fully constructed. After this point, the SUBOBJECT_CLEANUP must be 225 run if an exception is thrown before the end of the enclosing 226 function. */ 227DEFTREECODE (SUBOBJECT, "subobject", 'e', 1) 228/* An CTOR_STMT marks the beginning (if CTOR_BEGIN_P holds) or end of 229 a constructor (if CTOR_END_P) holds. At the end of a constructor, 230 the cleanups associated with any SUBOBJECT_CLEANUPS need no longer 231 be run. */ 232DEFTREECODE (CTOR_STMT, "ctor_stmt", 'e', 0) 233/* CTOR_INITIALIZER is a placeholder in template code for a call to 234 setup_vtbl_pointer (and appears in all functions, not just ctors). */ 235DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2) 236DEFTREECODE (RETURN_INIT, "return_init", 'e', 2) 237DEFTREECODE (TRY_BLOCK, "try_block", 'e', 2) 238DEFTREECODE (EH_SPEC_BLOCK, "eh_spec_block", 'e', 2) 239/* A HANDLER wraps a catch handler for the HANDLER_TYPE. If this is 240 CATCH_ALL_TYPE, then the handler catches all types. The declaration of 241 the catch variable is in HANDLER_PARMS, and the body block in 242 HANDLER_BODY. */ 243DEFTREECODE (HANDLER, "handler", 'e', 2) 244 245/* A MUST_NOT_THROW_EXPR wraps an expression that may not 246 throw, and must call terminate if it does. */ 247DEFTREECODE (MUST_NOT_THROW_EXPR, "must_not_throw_expr", 'e', 1) 248 249DEFTREECODE (TAG_DEFN, "tag_defn", 'e', 0) 250 251/* And some codes for expressing conversions for overload resolution. */ 252 253DEFTREECODE (IDENTITY_CONV, "identity_conv", 'e', 1) 254DEFTREECODE (LVALUE_CONV, "lvalue_conv", 'e', 1) 255DEFTREECODE (QUAL_CONV, "qual_conv", 'e', 1) 256DEFTREECODE (STD_CONV, "std_conv", 'e', 1) 257DEFTREECODE (PTR_CONV, "ptr_conv", 'e', 1) 258DEFTREECODE (PMEM_CONV, "pmem_conv", 'e', 1) 259DEFTREECODE (BASE_CONV, "base_conv", 'e', 1) 260DEFTREECODE (REF_BIND, "ref_bind", 'e', 1) 261DEFTREECODE (USER_CONV, "user_conv", 'e', 2) 262DEFTREECODE (AMBIG_CONV, "ambig_conv", 'e', 1) 263DEFTREECODE (RVALUE_CONV, "rvalue_conv", 'e', 1) 264 265/* 266Local variables: 267mode:c 268End: 269*/ 270