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Annotation of gcc/cp/tree.def, revision 1.1

1.1     ! root        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 Free Software Foundation, Inc.
        !             5:    Hacked by Michael Tiemann ([email protected])
        !             6: 
        !             7: This file is part of GNU CC.
        !             8: 
        !             9: GNU CC 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 2, or (at your option)
        !            12: any later version.
        !            13: 
        !            14: GNU CC 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 GNU CC; see the file COPYING.  If not, write to
        !            21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            22: 
        !            23:  
        !            24: /* Reference to the contents of an offset
        !            25:    (a value whose type is an OFFSET_TYPE).
        !            26:    Operand 0 is the object within which the offset is taken.
        !            27:    Operand 1 is the offset.  The language independent OFFSET_REF
        !            28:    just won't work for us.  */
        !            29: DEFTREECODE (CP_OFFSET_REF, "cp_offset_ref", "r", 2)
        !            30: 
        !            31: /* For DELETE_EXPR, operand 0 is the store to be destroyed.
        !            32:    Operand 1 is the value to pass to the destroying function
        !            33:    saying whether the store should be deallocated as well.  */
        !            34: DEFTREECODE (DELETE_EXPR, "dl_expr", "e", 2)
        !            35: DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", "e", 2)
        !            36: 
        !            37: /* Value is reference to particular overloaded class method.
        !            38:    Operand 0 is the class name (an IDENTIFIER_NODE);
        !            39:    operand 1 is the field (also an IDENTIFIER_NODE).
        !            40:    The COMPLEXITY field holds the class level (usually 0).  */
        !            41: DEFTREECODE (SCOPE_REF, "scope_ref", "r", 2)
        !            42: 
        !            43: /* When composing an object with a member, this is the result.
        !            44:    Operand 0 is the object.  Operand 1 is the member (usually
        !            45:    a dereferenced pointer to member).  */
        !            46: DEFTREECODE (MEMBER_REF, "member_ref", "r", 2)
        !            47: 
        !            48: /* Type conversion operator in C++.  TREE_TYPE is type that this
        !            49:    operator converts to.  Operand is expression to be converted.  */
        !            50: DEFTREECODE (TYPE_EXPR, "type_expr", "e", 1)
        !            51: 
        !            52: /* For CPLUS_NEW_EXPR, operand 0 is function which performs initialization,
        !            53:    operand 1 is argument list to initialization function,
        !            54:    and operand 2 is the slot which was allocated for this expression.  */
        !            55: DEFTREECODE (NEW_EXPR, "nw_expr", "e", 3)
        !            56: DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", "e", 3)
        !            57: 
        !            58: /* A throw expression.  operand 0 is the expression, if there was one,
        !            59:    else it is NULL_TREE.  */
        !            60: DEFTREECODE (THROW_EXPR, "throw_expr", "e", 1)
        !            61: 
        !            62: /* Template definition.  The following fields have the specified uses,
        !            63:    although there are other macros in cp-tree.h that should be used for
        !            64:    accessing this data.
        !            65:         DECL_ARGUMENTS          template parm vector
        !            66:         DECL_TEMPLATE_INFO      template text &c
        !            67:        DECL_VINDEX             list of instantiations already produced;
        !            68:                                only done for functions so far
        !            69:    For class template:
        !            70:         DECL_INITIAL            associated templates (methods &c)
        !            71:         DECL_RESULT             null
        !            72:    For non-class templates:
        !            73:        TREE_TYPE               type of object to be constructed
        !            74:         DECL_RESULT             decl for object to be created
        !            75:                                 (e.g., FUNCTION_DECL with tmpl parms used)
        !            76:  */
        !            77: DEFTREECODE (TEMPLATE_DECL, "template_decl", "d", 0)
        !            78: 
        !            79: /* Index into a template parameter list.  This parameter must be a type.
        !            80:    Use TYPE_FIELDS to find parmlist and index.  */
        !            81: DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", "t", 0)
        !            82: 
        !            83: /* Index into a template parameter list.  This parameter must not be a
        !            84:    type.  */
        !            85: DEFTREECODE (TEMPLATE_CONST_PARM, "template_const_parm", "c", 2)
        !            86: 
        !            87: /* For uninstantiated parameterized types.
        !            88:         TYPE_VALUES     tree list:
        !            89:                 TREE_PURPOSE    template decl
        !            90:                 TREE_VALUE      parm vector
        !            91:                 TREE_CHAIN      null
        !            92:    Other useful fields to be defined later.  */
        !            93: DEFTREECODE (UNINSTANTIATED_P_TYPE, "uninstantiated_p_type", "t", 0)
        !            94: 
        !            95: /* A thunk is a stub function.
        !            96: 
        !            97:    Thunks are used to implement multiple inheritance:
        !            98:    At run-time, such a thunk subtracts THUNK_DELTA (an int, not a tree)
        !            99:    from the this pointer, and then jumps to DECL_INITIAL
        !           100:    (which is an ADDR_EXPR whose operand is a FUNCTION_DECL).
        !           101: 
        !           102:    Other kinds of thunks may be defined later. */
        !           103: DEFTREECODE (THUNK_DECL, "thunk_decl", "d", 0)

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