gcc/cp/operators.def

   1 /* -*-C-*-
   2
   3    This file contains definitions of the various C++ operators,
   4    including both overloadable operators (like `+') and
   5    non-overloadable operators (like the `?:' ternary operator).
   6    Written by Mark Mitchell <mark@codesourcery.com>
   7
   8    Copyright (C) 2000-2020 Free Software Foundation, Inc.
   9
  10 This file is part of GCC.
  11
  12 GCC is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 3, or (at your option)
  15 any later version.
  16
  17 GCC is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with GCC; see the file COPYING3.  If not see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 /* The DEF_OPERATOR macro takes the following arguments:
  27
  28    NAME
  29
  30      The name of the operator, as a C string, but without the
  31      preceding `operator'.  This is the name that would be given in
  32      the source program.  For `operator +', for example, this would be
  33      `+'.
  34
  35    CODE
  36
  37      The tree_code for this operator.  For `operator +', for example,
  38      this would be PLUS_EXPR.  Because there are no tree codes for
  39      assignment operators, the same tree-codes are reused; i.e.,
  40      `operator +' will also have PLUS_EXPR as its CODE.
  41
  42    MANGLING
  43
  44      The mangling prefix for the operator, as a C string, and as
  45      mangled under the new ABI.  For `operator +', for example, this
  46      would be "pl".
  47
  48    FLAGS
  49
  50      ovl_op_flags bits.  Postincrement and postdecrement operators are
  51      marked as binary.
  52
  53    Before including this file, you should define DEF_OPERATOR
  54    to take these arguments.
  55
  56    There is code (such as in grok_op_properties) that depends on the
  57    order the operators are presented in this file.  Unary_ops must
  58    preceed a matching binary op (i.e. '+').  Assignment operators must
  59    be last, after OPERATOR_TRANSITION.  */
  60
  61 /* Use DEF_ASSN_OPERATOR to define an assignment operator.  Its
  62    arguments are as for DEF_OPERATOR, but there is no need to provide
  63    FLAGS (OVL_OP_FLAG_BINARY).  */
  64
  65 #ifndef DEF_ASSN_OPERATOR
  66 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING) \
  67   DEF_OPERATOR(NAME, CODE, MANGLING, OVL_OP_FLAG_BINARY)
  68 #endif
  69
  70 /* Memory allocation operators.  ARITY has special meaning. */
  71 DEF_OPERATOR ("new", NEW_EXPR, "nw", OVL_OP_FLAG_ALLOC)
  72 DEF_OPERATOR ("new []", VEC_NEW_EXPR, "na",
  73               OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_VEC)
  74 DEF_OPERATOR ("delete", DELETE_EXPR, "dl",
  75               OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE)
  76 DEF_OPERATOR ("delete []", VEC_DELETE_EXPR, "da",
  77               OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE | OVL_OP_FLAG_VEC)
  78
  79 /* Unary operators.  */
  80 DEF_OPERATOR ("+", UNARY_PLUS_EXPR, "ps", OVL_OP_FLAG_UNARY)
  81 DEF_OPERATOR ("-", NEGATE_EXPR, "ng", OVL_OP_FLAG_UNARY)
  82 DEF_OPERATOR ("&", ADDR_EXPR, "ad", OVL_OP_FLAG_UNARY)
  83 DEF_OPERATOR ("*", INDIRECT_REF, "de", OVL_OP_FLAG_UNARY)
  84 DEF_OPERATOR ("~", BIT_NOT_EXPR, "co", OVL_OP_FLAG_UNARY)
  85 DEF_OPERATOR ("!", TRUTH_NOT_EXPR, "nt", OVL_OP_FLAG_UNARY)
  86 DEF_OPERATOR ("++", PREINCREMENT_EXPR, "pp", OVL_OP_FLAG_UNARY)
  87 DEF_OPERATOR ("--", PREDECREMENT_EXPR, "mm", OVL_OP_FLAG_UNARY)
  88 DEF_OPERATOR ("->", COMPONENT_REF, "pt", OVL_OP_FLAG_UNARY)
  89 DEF_OPERATOR ("sizeof", SIZEOF_EXPR, "sz", OVL_OP_FLAG_UNARY)
  90 DEF_OPERATOR ("co_await", CO_AWAIT_EXPR, "aw", OVL_OP_FLAG_UNARY)
  91
  92 /* These are extensions.  */
  93 DEF_OPERATOR ("alignof", ALIGNOF_EXPR, "az", OVL_OP_FLAG_UNARY)
  94 DEF_OPERATOR ("__imag__", IMAGPART_EXPR, "v18__imag__", OVL_OP_FLAG_UNARY)
  95 DEF_OPERATOR ("__real__", REALPART_EXPR, "v18__real__", OVL_OP_FLAG_UNARY)
  96
  97 /* Binary operators.  */
  98 DEF_OPERATOR ("+", PLUS_EXPR, "pl", OVL_OP_FLAG_BINARY)
  99 DEF_OPERATOR ("-", MINUS_EXPR, "mi", OVL_OP_FLAG_BINARY)
 100 DEF_OPERATOR ("*", MULT_EXPR, "ml", OVL_OP_FLAG_BINARY)
 101 DEF_OPERATOR ("/", TRUNC_DIV_EXPR, "dv", OVL_OP_FLAG_BINARY)
 102 DEF_OPERATOR ("%", TRUNC_MOD_EXPR, "rm", OVL_OP_FLAG_BINARY)
 103 DEF_OPERATOR ("&", BIT_AND_EXPR, "an", OVL_OP_FLAG_BINARY)
 104 DEF_OPERATOR ("|", BIT_IOR_EXPR, "or", OVL_OP_FLAG_BINARY)
 105 DEF_OPERATOR ("^", BIT_XOR_EXPR, "eo", OVL_OP_FLAG_BINARY)
 106 DEF_OPERATOR ("<<", LSHIFT_EXPR, "ls", OVL_OP_FLAG_BINARY)
 107 DEF_OPERATOR (">>", RSHIFT_EXPR, "rs", OVL_OP_FLAG_BINARY)
 108
 109 /* defaultable_fn_check relies on the ordering of the comparison operators.  */
 110 DEF_OPERATOR ("==", EQ_EXPR, "eq", OVL_OP_FLAG_BINARY)
 111 DEF_OPERATOR ("!=", NE_EXPR, "ne", OVL_OP_FLAG_BINARY)
 112 DEF_OPERATOR ("<", LT_EXPR, "lt", OVL_OP_FLAG_BINARY)
 113 DEF_OPERATOR (">", GT_EXPR, "gt", OVL_OP_FLAG_BINARY)
 114 DEF_OPERATOR ("<=", LE_EXPR, "le", OVL_OP_FLAG_BINARY)
 115 DEF_OPERATOR (">=", GE_EXPR, "ge", OVL_OP_FLAG_BINARY)
 116 DEF_OPERATOR ("<=>", SPACESHIP_EXPR, "ss", OVL_OP_FLAG_BINARY)
 117
 118 DEF_OPERATOR ("&&", TRUTH_ANDIF_EXPR, "aa", OVL_OP_FLAG_BINARY)
 119 DEF_OPERATOR ("||", TRUTH_ORIF_EXPR, "oo", OVL_OP_FLAG_BINARY)
 120 DEF_OPERATOR (",", COMPOUND_EXPR, "cm", OVL_OP_FLAG_BINARY)
 121 DEF_OPERATOR ("->*", MEMBER_REF, "pm", OVL_OP_FLAG_BINARY)
 122 DEF_OPERATOR (".*", DOTSTAR_EXPR, "ds", OVL_OP_FLAG_BINARY)
 123 DEF_OPERATOR ("[]", ARRAY_REF, "ix", OVL_OP_FLAG_BINARY)
 124 DEF_OPERATOR ("++", POSTINCREMENT_EXPR, "pp", OVL_OP_FLAG_BINARY)
 125 DEF_OPERATOR ("--", POSTDECREMENT_EXPR, "mm", OVL_OP_FLAG_BINARY)
 126
 127 /* Miscellaneous.  */
 128 DEF_OPERATOR ("?:", COND_EXPR, "qu", OVL_OP_FLAG_NONE)
 129 DEF_OPERATOR ("()", CALL_EXPR, "cl", OVL_OP_FLAG_NONE)
 130
 131 /* Operators needed for mangling.  */
 132 DEF_OPERATOR (NULL, CAST_EXPR, "cv", OVL_OP_FLAG_UNARY)
 133 DEF_OPERATOR (NULL, DYNAMIC_CAST_EXPR, "dc", OVL_OP_FLAG_UNARY)
 134 DEF_OPERATOR (NULL, REINTERPRET_CAST_EXPR, "rc", OVL_OP_FLAG_UNARY)
 135 DEF_OPERATOR (NULL, CONST_CAST_EXPR, "cc", OVL_OP_FLAG_UNARY)
 136 DEF_OPERATOR (NULL, STATIC_CAST_EXPR, "sc", OVL_OP_FLAG_UNARY)
 137 DEF_OPERATOR (NULL, SCOPE_REF, "sr", OVL_OP_FLAG_NONE)
 138 DEF_OPERATOR (NULL, EXPR_PACK_EXPANSION, "sp", OVL_OP_FLAG_NONE)
 139 DEF_OPERATOR (NULL, UNARY_LEFT_FOLD_EXPR, "fl", OVL_OP_FLAG_NONE)
 140 DEF_OPERATOR (NULL, UNARY_RIGHT_FOLD_EXPR, "fr", OVL_OP_FLAG_NONE)
 141 DEF_OPERATOR (NULL, BINARY_LEFT_FOLD_EXPR, "fL", OVL_OP_FLAG_NONE)
 142 DEF_OPERATOR (NULL, BINARY_RIGHT_FOLD_EXPR, "fR", OVL_OP_FLAG_NONE)
 143
 144 #ifdef OPERATOR_TRANSITION
 145 OPERATOR_TRANSITION
 146 #undef OPERATOR_TRANSITION
 147 #endif
 148
 149 /* Assignment operators.  */
 150 DEF_ASSN_OPERATOR ("=", NOP_EXPR, "aS")
 151 DEF_ASSN_OPERATOR ("+=", PLUS_EXPR, "pL")
 152 DEF_ASSN_OPERATOR ("-=", MINUS_EXPR, "mI")
 153 DEF_ASSN_OPERATOR ("*=", MULT_EXPR, "mL")
 154 DEF_ASSN_OPERATOR ("/=", TRUNC_DIV_EXPR, "dV")
 155 DEF_ASSN_OPERATOR ("%=", TRUNC_MOD_EXPR, "rM")
 156 DEF_ASSN_OPERATOR ("&=", BIT_AND_EXPR, "aN")
 157 DEF_ASSN_OPERATOR ("|=", BIT_IOR_EXPR, "oR")
 158 DEF_ASSN_OPERATOR ("^=", BIT_XOR_EXPR, "eO")
 159 DEF_ASSN_OPERATOR ("<<=", LSHIFT_EXPR, "lS")
 160 DEF_ASSN_OPERATOR (">>=", RSHIFT_EXPR, "rS")
 161
 162 #undef DEF_ASSN_OPERATOR
 163 #undef DEF_OPERATOR