gcc/cp/cp-tree.def

   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) 1987-2014 Free Software Foundation, Inc.
   5    Hacked by Michael Tiemann (tiemann@cygnus.com)
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23
  24 /* An OFFSET_REF is used in two situations:
  25
  26    1. An expression of the form `A::m' where `A' is a class and `m' is
  27       a non-static member.  In this case, operand 0 will be a TYPE
  28       (corresponding to `A') and operand 1 will be a FIELD_DECL,
  29       BASELINK, or TEMPLATE_ID_EXPR (corresponding to `m').
  30
  31       The expression is a pointer-to-member if its address is taken,
  32       but simply denotes a member of the object if its address is not
  33       taken.
  34
  35       This form is only used during the parsing phase; once semantic
  36       analysis has taken place they are eliminated.
  37
  38    2. An expression of the form `x.*p'.  In this case, operand 0 will
  39       be an expression corresponding to `x' and operand 1 will be an
  40       expression with pointer-to-member type.  */
  41 DEFTREECODE (OFFSET_REF, "offset_ref", tcc_reference, 2)
  42
  43 /* A pointer-to-member constant.  For a pointer-to-member constant
  44    `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X' and the
  45    PTRMEM_CST_MEMBER is the _DECL for `Y'.  */
  46 DEFTREECODE (PTRMEM_CST, "ptrmem_cst", tcc_constant, 0)
  47
  48 /* For NEW_EXPR, operand 0 is the placement list.
  49    Operand 1 is the new-declarator.
  50    Operand 2 is the number of elements in the array.
  51    Operand 3 is the initializer.  */
  52 DEFTREECODE (NEW_EXPR, "nw_expr", tcc_expression, 4)
  53 DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", tcc_expression, 3)
  54
  55 /* For DELETE_EXPR, operand 0 is the store to be destroyed.
  56    Operand 1 is the value to pass to the destroying function
  57    saying whether the store should be deallocated as well.  */
  58 DEFTREECODE (DELETE_EXPR, "dl_expr", tcc_expression, 2)
  59 DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", tcc_expression, 2)
  60
  61 /* Value is reference to particular overloaded class method.
  62    Operand 0 is the class, operand 1 is the field
  63    The COMPLEXITY field holds the class level (usually 0).  */
  64 DEFTREECODE (SCOPE_REF, "scope_ref", tcc_reference, 2)
  65
  66 /* When composing an object with a member, this is the result.
  67    Operand 0 is the object.  Operand 1 is the member (usually
  68    a dereferenced pointer to member).  */
  69 DEFTREECODE (MEMBER_REF, "member_ref", tcc_reference, 2)
  70
  71 /* Type conversion operator in C++.  TREE_TYPE is type that this
  72    operator converts to.  Operand is expression to be converted.  */
  73 DEFTREECODE (TYPE_EXPR, "type_expr", tcc_expression, 1)
  74
  75 /* AGGR_INIT_EXPRs have a variably-sized representation similar to
  76    that of CALL_EXPRs.  Operand 0 is an INTEGER_CST node containing the
  77    operand count, operand 1 is the function which performs initialization,
  78    operand 2 is the slot which was allocated for this expression, and
  79    the remaining operands are the arguments to the initialization function.  */
  80 DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", tcc_vl_exp, 3)
  81
  82 /* Initialization of an array from another array, expressed at a high level
  83    so that it works with TARGET_EXPR.  Operand 0 is the target, operand 1
  84    is the initializer.  */
  85 DEFTREECODE (VEC_INIT_EXPR, "vec_init_expr", tcc_expression, 2)
  86
  87 /* A throw expression.  operand 0 is the expression, if there was one,
  88    else it is NULL_TREE.  */
  89 DEFTREECODE (THROW_EXPR, "throw_expr", tcc_expression, 1)
  90
  91 /* An empty class object.  The TREE_TYPE gives the class type.  We use
  92    these to avoid actually creating instances of the empty classes.  */
  93 DEFTREECODE (EMPTY_CLASS_EXPR, "empty_class_expr", tcc_expression, 0)
  94
  95 /* A reference to a member function or member functions from a base
  96    class.  BASELINK_FUNCTIONS gives the FUNCTION_DECL,
  97    TEMPLATE_DECL, OVERLOAD, or TEMPLATE_ID_EXPR corresponding to the
  98    functions.  BASELINK_BINFO gives the base from which the functions
  99    come, i.e., the base to which the `this' pointer must be converted
 100    before the functions are called.  BASELINK_ACCESS_BINFO gives the
 101    base used to name the functions.
 102
 103    A BASELINK is an expression; the TREE_TYPE of the BASELINK gives
 104    the type of the expression.  This type is either a FUNCTION_TYPE,
 105    METHOD_TYPE, or `unknown_type_node' indicating that the function is
 106    overloaded.  */
 107 DEFTREECODE (BASELINK, "baselink", tcc_exceptional, 0)
 108
 109 /* Template definition.  The following fields have the specified uses,
 110    although there are other macros in cp-tree.h that should be used for
 111    accessing this data.
 112         DECL_ARGUMENTS          template parm vector
 113         DECL_TEMPLATE_INFO      template text &c
 114         DECL_VINDEX             list of instantiations already produced;
 115                                 only done for functions so far
 116    For class template:
 117         DECL_INITIAL            associated templates (methods &c)
 118         DECL_TEMPLATE_RESULT    null
 119    For non-class templates:
 120         TREE_TYPE               type of object to be constructed
 121         DECL_TEMPLATE_RESULT    decl for object to be created
 122                                 (e.g., FUNCTION_DECL with tmpl parms used)
 123  */
 124 DEFTREECODE (TEMPLATE_DECL, "template_decl", tcc_declaration, 0)
 125
 126 /* Index into a template parameter list.  The TEMPLATE_PARM_IDX gives
 127    the index (from 0) of the parameter, while the TEMPLATE_PARM_LEVEL
 128    gives the level (from 1) of the parameter.
 129
 130    Here's an example:
 131
 132    template <class T> // Index 0, Level 1.
 133    struct S
 134    {
 135       template <class U, // Index 0, Level 2.
 136                 class V> // Index 1, Level 2.
 137       void f();
 138    };
 139
 140    The DESCENDANTS will be a chain of TEMPLATE_PARM_INDEXs descended
 141    from this one.  The first descendant will have the same IDX, but
 142    its LEVEL will be one less.  The TREE_CHAIN field is used to chain
 143    together the descendants.  The TEMPLATE_PARM_DECL is the
 144    declaration of this parameter, either a TYPE_DECL or CONST_DECL.
 145    The TEMPLATE_PARM_ORIG_LEVEL is the LEVEL of the most distant
 146    parent, i.e., the LEVEL that the parameter originally had when it
 147    was declared.  For example, if we instantiate S<int>, we will have:
 148
 149    struct S<int>
 150    {
 151      template <class U, // Index 0, Level 1, Orig Level 2
 152                class V> // Index 1, Level 1, Orig Level 2
 153      void f();
 154    };
 155
 156    The LEVEL is the level of the parameter when we are worrying about
 157    the types of things; the ORIG_LEVEL is the level when we are
 158    worrying about instantiating things.  */
 159 DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", tcc_exceptional, 0)
 160
 161 /* Index into a template parameter list for template template parameters.
 162    This parameter must be a type.  The TYPE_FIELDS value will be a
 163    TEMPLATE_PARM_INDEX.
 164
 165    It is used without template arguments like TT in C<TT>,
 166    TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO is NULL_TREE
 167    and TYPE_NAME is a TEMPLATE_DECL.  */
 168 DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", tcc_type, 0)
 169
 170 /* The ordering of the following codes is optimized for the checking
 171    macros in tree.h.  Changing the order will degrade the speed of the
 172    compiler.  TEMPLATE_TYPE_PARM, TYPENAME_TYPE, TYPEOF_TYPE,
 173    BOUND_TEMPLATE_TEMPLATE_PARM.  */
 174
 175 /* Index into a template parameter list.  This parameter must be a type.
 176    The type.values field will be a TEMPLATE_PARM_INDEX.  */
 177 DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", tcc_type, 0)
 178
 179 /* A type designated by `typename T::t'.  TYPE_CONTEXT is `T',
 180    TYPE_NAME is an IDENTIFIER_NODE for `t'.  If the type was named via
 181    template-id, TYPENAME_TYPE_FULLNAME will hold the TEMPLATE_ID_EXPR.
 182    TREE_TYPE is always NULL.  */
 183 DEFTREECODE (TYPENAME_TYPE, "typename_type", tcc_type, 0)
 184
 185 /* A type designated by `__typeof (expr)'.  TYPEOF_TYPE_EXPR is the
 186    expression in question.  */
 187 DEFTREECODE (TYPEOF_TYPE, "typeof_type", tcc_type, 0)
 188
 189 /* Like TEMPLATE_TEMPLATE_PARM it is used with bound template arguments
 190    like TT<int>.
 191    In this case, TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO contains the
 192    template name and its bound arguments.  TYPE_NAME is a TYPE_DECL.  */
 193 DEFTREECODE (BOUND_TEMPLATE_TEMPLATE_PARM, "bound_template_template_parm",
 194              tcc_type, 0)
 195
 196 /* For template template argument of the form `T::template C'.
 197    TYPE_CONTEXT is `T', the template parameter dependent object.
 198    TYPE_NAME is an IDENTIFIER_NODE for `C', the member class template.  */
 199 DEFTREECODE (UNBOUND_CLASS_TEMPLATE, "unbound_class_template", tcc_type, 0)
 200
 201 /* A using declaration.  USING_DECL_SCOPE contains the specified
 202    scope.  In a member using decl, unless DECL_DEPENDENT_P is true,
 203    USING_DECL_DECLS contains the _DECL or OVERLOAD so named.  This is
 204    not an alias, but is later expanded into multiple aliases.  */
 205 DEFTREECODE (USING_DECL, "using_decl", tcc_declaration, 0)
 206
 207 /* A using directive. The operand is USING_STMT_NAMESPACE.  */
 208 DEFTREECODE (USING_STMT, "using_stmt", tcc_statement, 1)
 209
 210 /* An un-parsed default argument.  Holds a vector of input tokens and
 211    a vector of places where the argument was instantiated before
 212    parsing had occurred.  */
 213 DEFTREECODE (DEFAULT_ARG, "default_arg", tcc_exceptional, 0)
 214
 215 /* An uninstantiated noexcept-specification.  DEFERRED_NOEXCEPT_PATTERN is
 216    the pattern from the template, and DEFERRED_NOEXCEPT_ARGS are the
 217    template arguments to substitute into the pattern when needed.  */
 218 DEFTREECODE (DEFERRED_NOEXCEPT, "deferred_noexcept", tcc_exceptional, 0)
 219
 220 /* A template-id, like foo<int>.  The first operand is the template.
 221    The second is NULL if there are no explicit arguments, or a
 222    TREE_VEC of arguments.  The template will be a FUNCTION_DECL,
 223    TEMPLATE_DECL, or an OVERLOAD.  If the template-id refers to a
 224    member template, the template may be an IDENTIFIER_NODE.  */
 225 DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", tcc_expression, 2)
 226
 227 /* A list-like node for chaining overloading candidates. TREE_TYPE is
 228    the original name, and the parameter is the FUNCTION_DECL.  */
 229 DEFTREECODE (OVERLOAD, "overload", tcc_exceptional, 0)
 230
 231 /* A pseudo-destructor, of the form "OBJECT.~DESTRUCTOR" or
 232    "OBJECT.SCOPE::~DESTRUCTOR.  The first operand is the OBJECT.  The
 233    second operand (if non-NULL) is the SCOPE.  The third operand is
 234    the TYPE node corresponding to the DESTRUCTOR.  The type of the
 235    first operand will always be a scalar type.
 236
 237    The type of a PSEUDO_DTOR_EXPR is always "void", even though it can
 238    be used as if it were a zero-argument function.  We handle the
 239    function-call case specially, and giving it "void" type prevents it
 240    being used in expressions in ways that are not permitted.  */
 241 DEFTREECODE (PSEUDO_DTOR_EXPR, "pseudo_dtor_expr", tcc_expression, 3)
 242
 243 /* A whole bunch of tree codes for the initial, superficial parsing of
 244    templates.  */
 245 DEFTREECODE (MODOP_EXPR, "modop_expr", tcc_expression, 3)
 246 DEFTREECODE (CAST_EXPR, "cast_expr", tcc_unary, 1)
 247 DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", tcc_unary, 1)
 248 DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", tcc_unary, 1)
 249 DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", tcc_unary, 1)
 250 DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", tcc_unary, 1)
 251 DEFTREECODE (IMPLICIT_CONV_EXPR, "implicit_conv_expr", tcc_unary, 1)
 252 DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", tcc_expression, 2)
 253 DEFTREECODE (TYPEID_EXPR, "typeid_expr", tcc_expression, 1)
 254 DEFTREECODE (NOEXCEPT_EXPR, "noexcept_expr", tcc_unary, 1)
 255
 256 /* A placeholder for an expression that is not type-dependent, but
 257    does occur in a template.  When an expression that is not
 258    type-dependent appears in a larger expression, we must compute the
 259    type of that larger expression.  That computation would normally
 260    modify the original expression, which would change the mangling of
 261    that expression if it appeared in a template argument list.  In
 262    that situation, we create a NON_DEPENDENT_EXPR to take the place of
 263    the original expression.  The expression is the only operand -- it
 264    is only needed for diagnostics.  */
 265 DEFTREECODE (NON_DEPENDENT_EXPR, "non_dependent_expr", tcc_expression, 1)
 266
 267 /* CTOR_INITIALIZER is a placeholder in template code for a call to
 268    setup_vtbl_pointer (and appears in all functions, not just ctors).  */
 269 DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", tcc_expression, 1)
 270
 271 DEFTREECODE (TRY_BLOCK, "try_block", tcc_statement, 2)
 272
 273 DEFTREECODE (EH_SPEC_BLOCK, "eh_spec_block", tcc_statement, 2)
 274
 275 /* A HANDLER wraps a catch handler for the HANDLER_TYPE.  If this is
 276    CATCH_ALL_TYPE, then the handler catches all types.  The declaration of
 277    the catch variable is in HANDLER_PARMS, and the body block in
 278    HANDLER_BODY.  */
 279 DEFTREECODE (HANDLER, "handler", tcc_statement, 2)
 280
 281 /* A MUST_NOT_THROW_EXPR wraps an expression that may not
 282    throw, and must call terminate if it does.  The second argument
 283    is a condition, used in templates to express noexcept (condition).  */
 284 DEFTREECODE (MUST_NOT_THROW_EXPR, "must_not_throw_expr", tcc_expression, 2)
 285
 286 /* A CLEANUP_STMT marks the point at which a declaration is fully
 287    constructed.  The CLEANUP_EXPR is run on behalf of CLEANUP_DECL
 288    when CLEANUP_BODY completes.  */
 289 DEFTREECODE (CLEANUP_STMT, "cleanup_stmt", tcc_statement, 3)
 290
 291 /* Represents an 'if' statement. The operands are IF_COND,
 292    THEN_CLAUSE, and ELSE_CLAUSE, and the current scope, respectively.  */
 293 /* ??? It is currently still necessary to distinguish between IF_STMT
 294    and COND_EXPR for the benefit of templates.  */
 295 DEFTREECODE (IF_STMT, "if_stmt", tcc_statement, 4)
 296
 297 /* Used to represent a `for' statement. The operands are
 298    FOR_INIT_STMT, FOR_COND, FOR_EXPR, and FOR_BODY, respectively.  */
 299 DEFTREECODE (FOR_STMT, "for_stmt", tcc_statement, 5)
 300
 301 /* Used to represent a range-based `for' statement. The operands are
 302    RANGE_FOR_DECL, RANGE_FOR_EXPR, RANGE_FOR_BODY, and RANGE_FOR_SCOPE,
 303    respectively.  Only used in templates.  */
 304 DEFTREECODE (RANGE_FOR_STMT, "range_for_stmt", tcc_statement, 4)
 305
 306 /* Used to represent a 'while' statement. The operands are WHILE_COND
 307    and WHILE_BODY, respectively.  */
 308 DEFTREECODE (WHILE_STMT, "while_stmt", tcc_statement, 2)
 309
 310 /* Used to represent a 'do' statement. The operands are DO_BODY and
 311    DO_COND, respectively.  */
 312 DEFTREECODE (DO_STMT, "do_stmt", tcc_statement, 2)
 313
 314 /* Used to represent a 'break' statement.  */
 315 DEFTREECODE (BREAK_STMT, "break_stmt", tcc_statement, 0)
 316
 317 /* Used to represent a 'continue' statement.  */
 318 DEFTREECODE (CONTINUE_STMT, "continue_stmt", tcc_statement, 0)
 319
 320 /* Used to represent a 'switch' statement. The operands are
 321    SWITCH_STMT_COND, SWITCH_STMT_BODY, SWITCH_STMT_TYPE, and
 322    SWITCH_STMT_SCOPE, respectively.  */
 323 DEFTREECODE (SWITCH_STMT, "switch_stmt", tcc_statement, 4)
 324
 325 /* Used to represent an expression statement.  Use `EXPR_STMT_EXPR' to
 326    obtain the expression.  */
 327 DEFTREECODE (EXPR_STMT, "expr_stmt", tcc_expression, 1)
 328
 329 DEFTREECODE (TAG_DEFN, "tag_defn", tcc_expression, 0)
 330
 331 /* Represents an 'offsetof' expression during template expansion.  */
 332 DEFTREECODE (OFFSETOF_EXPR, "offsetof_expr", tcc_expression, 1)
 333
 334 /* Represents the -> operator during template expansion.  */
 335 DEFTREECODE (ARROW_EXPR, "arrow_expr", tcc_expression, 1)
 336
 337 /* Represents an '__alignof__' expression during template
 338    expansion.  */
 339 DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", tcc_expression, 1)
 340
 341 /* Represents an Objective-C++ '@encode' expression during template
 342    expansion.  */
 343 DEFTREECODE (AT_ENCODE_EXPR, "at_encode_expr", tcc_expression, 1)
 344
 345 /* A STMT_EXPR represents a statement-expression during template
 346    expansion.  This is the GCC extension { ( ... ) }.  The
 347    STMT_EXPR_STMT is the statement given by the expression.  */
 348 DEFTREECODE (STMT_EXPR, "stmt_expr", tcc_expression, 1)
 349
 350 /* Unary plus. Operand 0 is the expression to which the unary plus
 351    is applied.  */
 352 DEFTREECODE (UNARY_PLUS_EXPR, "unary_plus_expr", tcc_unary, 1)
 353
 354 /** C++0x extensions. */
 355
 356 /* A static assertion.  This is a C++0x extension.
 357    STATIC_ASSERT_CONDITION contains the condition that is being
 358    checked.  STATIC_ASSERT_MESSAGE contains the message (a string
 359    literal) to be displayed if the condition fails to hold.  */
 360 DEFTREECODE (STATIC_ASSERT, "static_assert", tcc_exceptional, 0)
 361
 362 /* Represents an argument pack of types (or templates). An argument
 363    pack stores zero or more arguments that will be used to instantiate
 364    a parameter pack.
 365
 366    ARGUMENT_PACK_ARGS retrieves the arguments stored in the argument
 367    pack.
 368
 369    Example:
 370      template<typename... Values>
 371      class tuple { ... };
 372
 373      tuple<int, float, double> t;
 374
 375    Values is a (template) parameter pack. When tuple<int, float,
 376    double> is instantiated, the Values parameter pack is instantiated
 377    with the argument pack <int, float, double>. ARGUMENT_PACK_ARGS will
 378    be a TREE_VEC containing int, float, and double.  */
 379 DEFTREECODE (TYPE_ARGUMENT_PACK, "type_argument_pack", tcc_type, 0)
 380
 381 /* Represents an argument pack of values, which can be used either for
 382    non-type template arguments or function call arguments.
 383
 384    NONTYPE_ARGUMENT_PACK plays precisely the same role as
 385    TYPE_ARGUMENT_PACK, but will be used for packing non-type template
 386    arguments (e.g., "int... Dimensions") or function arguments ("const
 387    Args&... args"). */
 388 DEFTREECODE (NONTYPE_ARGUMENT_PACK, "nontype_argument_pack", tcc_expression, 1)
 389
 390 /* Represents a type expression that will be expanded into a list of
 391    types when instantiated with one or more argument packs.
 392
 393    PACK_EXPANSION_PATTERN retrieves the expansion pattern. This is
 394    the type or expression that we will substitute into with each
 395    argument in an argument pack.
 396
 397    SET_PACK_EXPANSION_PATTERN sets the expansion pattern.
 398
 399    PACK_EXPANSION_PARAMETER_PACKS contains a TREE_LIST of the parameter
 400    packs that are used in this pack expansion.
 401
 402    Example:
 403      template<typename... Values>
 404      struct tied : tuple<Values&...> {
 405        // ...
 406      };
 407
 408    The derivation from tuple contains a TYPE_PACK_EXPANSION for the
 409    template arguments. Its PACK_EXPANSION_PATTERN is "Values&" and its
 410    PACK_EXPANSION_PARAMETER_PACKS will contain "Values".  */
 411 DEFTREECODE (TYPE_PACK_EXPANSION, "type_pack_expansion", tcc_type, 0)
 412
 413 /* Represents an expression that will be expanded into a list of
 414    expressions when instantiated with one or more argument packs.
 415
 416    EXPR_PACK_EXPANSION plays precisely the same role as TYPE_PACK_EXPANSION,
 417    but will be used for expressions.  */
 418 DEFTREECODE (EXPR_PACK_EXPANSION, "expr_pack_expansion", tcc_expression, 3)
 419
 420 /* Selects the Ith parameter out of an argument pack. This node will
 421    be used when instantiating pack expansions; see
 422    tsubst_pack_expansion.
 423
 424    ARGUMENT_PACK_SELECT_FROM_PACK contains the *_ARGUMENT_PACK node
 425    from which the argument will be selected.
 426
 427    ARGUMENT_PACK_SELECT_INDEX contains the index into the argument
 428    pack that will be returned by this ARGUMENT_PACK_SELECT node. The
 429    index is a machine integer.  */
 430 DEFTREECODE (ARGUMENT_PACK_SELECT, "argument_pack_select", tcc_exceptional, 0)
 431
 432 /** C++ extensions. */
 433
 434 /* Represents a trait expression during template expansion.  */
 435 DEFTREECODE (TRAIT_EXPR, "trait_expr", tcc_exceptional, 0)
 436
 437 /* A lambda expression.  This is a C++0x extension.
 438    LAMBDA_EXPR_DEFAULT_CAPTURE_MODE is an enum for the default, which may be
 439    none.
 440    LAMBDA_EXPR_CAPTURE_LIST holds the capture-list, including `this'.
 441    LAMBDA_EXPR_THIS_CAPTURE goes straight to the capture of `this', if it exists.
 442    LAMBDA_EXPR_PENDING_PROXIES is a vector of capture proxies which need to
 443    be pushed once scope returns to the lambda.
 444    LAMBDA_EXPR_MUTABLE_P signals whether this lambda was declared mutable.
 445    LAMBDA_EXPR_RETURN_TYPE holds the return type, if it was specified.  */
 446 DEFTREECODE (LAMBDA_EXPR, "lambda_expr", tcc_exceptional, 0)
 447
 448 /* The declared type of an expression.  This is a C++0x extension.
 449    DECLTYPE_TYPE_EXPR is the expression whose type we are computing.
 450    DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P states whether the
 451    expression was parsed as an id-expression or a member access
 452    expression. When false, it was parsed as a full expression.
 453    DECLTYPE_FOR_LAMBDA_CAPTURE is set if we want lambda capture semantics.
 454    DECLTYPE_FOR_LAMBDA_RETURN is set if we want lambda return deduction.  */
 455 DEFTREECODE (DECLTYPE_TYPE, "decltype_type", tcc_type, 0)
 456
 457 /* A type designated by `__underlying_type (type)'.
 458    UNDERLYING_TYPE_TYPE is the type in question.  */
 459 DEFTREECODE (UNDERLYING_TYPE, "underlying_type", tcc_type, 0)
 460
 461 /* A type designated by one of the bases type traits.
 462    BASES_TYPE is the type in question.  */
 463 DEFTREECODE (BASES, "bases", tcc_type, 0)
 464
 465 /* Used to represent the template information stored by template
 466    specializations.
 467    The accessors are:
 468    TI_TEMPLATE the template declaration associated to the specialization
 469    TI_ARGS the arguments of the template specialization
 470    TI_TYPEDEFS_NEEDING_ACCESS_CHECKING the vector of typedefs used in
 471    the pattern of the template for which access check is needed at template
 472    instantiation time.  */
 473 DEFTREECODE (TEMPLATE_INFO, "template_info", tcc_exceptional, 0)
 474
 475 /*
 476 Local variables:
 477 mode:c
 478 End:
 479 */