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1 /* -*-C-*-
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2
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3 This file contains definitions of the various C++ operators,
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4 including both overloadable operators (like `+') and
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5 non-overloadable operators (like the `?:' ternary operator).
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6 Written by Mark Mitchell <mark@codesourcery.com>
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7
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8 Copyright (C) 2000-2018 Free Software Foundation, Inc.
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9
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10 This file is part of GCC.
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11
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12 GCC is free software; you can redistribute it and/or modify
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13 it under the terms of the GNU General Public License as published by
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14 the Free Software Foundation; either version 3, or (at your option)
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15 any later version.
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16
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17 GCC is distributed in the hope that it will be useful,
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18 but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 GNU General Public License for more details.
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21
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22 You should have received a copy of the GNU General Public License
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23 along with GCC; see the file COPYING3. If not see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 /* The DEF_OPERATOR macro takes the following arguments:
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27
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28 NAME
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29
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30 The name of the operator, as a C string, but without the
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31 preceding `operator'. This is the name that would be given in
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32 the source program. For `operator +', for example, this would be
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33 `+'.
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34
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35 CODE
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36
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37 The tree_code for this operator. For `operator +', for example,
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38 this would be PLUS_EXPR. Because there are no tree codes for
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39 assignment operators, the same tree-codes are reused; i.e.,
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40 `operator +' will also have PLUS_EXPR as its CODE.
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41
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42 MANGLING
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43
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44 The mangling prefix for the operator, as a C string, and as
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45 mangled under the new ABI. For `operator +', for example, this
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46 would be "pl".
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47
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48 FLAGS
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49
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50 ovl_op_flags bits. Postincrement and postdecrement operators are
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51 marked as binary.
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52
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53 Before including this file, you should define DEF_OPERATOR
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54 to take these arguments.
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55
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56 There is code (such as in grok_op_properties) that depends on the
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57 order the operators are presented in this file. Unary_ops must
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58 preceed a matching binary op (i.e. '+'). Assignment operators must
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59 be last, after OPERATOR_TRANSITION. */
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60
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61 /* Use DEF_ASSN_OPERATOR to define an assignment operator. Its
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62 arguments are as for DEF_OPERATOR, but there is no need to provide
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63 FLAGS (OVL_OP_FLAG_BINARY). */
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64
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65 #ifndef DEF_ASSN_OPERATOR
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66 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING) \
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67 DEF_OPERATOR(NAME, CODE, MANGLING, OVL_OP_FLAG_BINARY)
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68 #endif
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69
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70 /* Memory allocation operators. ARITY has special meaning. */
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71 DEF_OPERATOR ("new", NEW_EXPR, "nw", OVL_OP_FLAG_ALLOC)
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72 DEF_OPERATOR ("new []", VEC_NEW_EXPR, "na",
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73 OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_VEC)
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74 DEF_OPERATOR ("delete", DELETE_EXPR, "dl",
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75 OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE)
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76 DEF_OPERATOR ("delete []", VEC_DELETE_EXPR, "da",
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77 OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE | OVL_OP_FLAG_VEC)
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78
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79 /* Unary operators. */
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80 DEF_OPERATOR ("+", UNARY_PLUS_EXPR, "ps", OVL_OP_FLAG_UNARY)
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81 DEF_OPERATOR ("-", NEGATE_EXPR, "ng", OVL_OP_FLAG_UNARY)
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82 DEF_OPERATOR ("&", ADDR_EXPR, "ad", OVL_OP_FLAG_UNARY)
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83 DEF_OPERATOR ("*", INDIRECT_REF, "de", OVL_OP_FLAG_UNARY)
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84 DEF_OPERATOR ("~", BIT_NOT_EXPR, "co", OVL_OP_FLAG_UNARY)
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85 DEF_OPERATOR ("!", TRUTH_NOT_EXPR, "nt", OVL_OP_FLAG_UNARY)
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86 DEF_OPERATOR ("++", PREINCREMENT_EXPR, "pp", OVL_OP_FLAG_UNARY)
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87 DEF_OPERATOR ("--", PREDECREMENT_EXPR, "mm", OVL_OP_FLAG_UNARY)
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88 DEF_OPERATOR ("->", COMPONENT_REF, "pt", OVL_OP_FLAG_UNARY)
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89 DEF_OPERATOR ("sizeof", SIZEOF_EXPR, "sz", OVL_OP_FLAG_UNARY)
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90
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91 /* These are extensions. */
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92 DEF_OPERATOR ("alignof", ALIGNOF_EXPR, "az", OVL_OP_FLAG_UNARY)
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93 DEF_OPERATOR ("__imag__", IMAGPART_EXPR, "v18__imag__", OVL_OP_FLAG_UNARY)
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94 DEF_OPERATOR ("__real__", REALPART_EXPR, "v18__real__", OVL_OP_FLAG_UNARY)
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95
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96 /* Binary operators. */
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97 DEF_OPERATOR ("+", PLUS_EXPR, "pl", OVL_OP_FLAG_BINARY)
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98 DEF_OPERATOR ("-", MINUS_EXPR, "mi", OVL_OP_FLAG_BINARY)
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99 DEF_OPERATOR ("*", MULT_EXPR, "ml", OVL_OP_FLAG_BINARY)
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100 DEF_OPERATOR ("/", TRUNC_DIV_EXPR, "dv", OVL_OP_FLAG_BINARY)
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101 DEF_OPERATOR ("%", TRUNC_MOD_EXPR, "rm", OVL_OP_FLAG_BINARY)
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102 DEF_OPERATOR ("&", BIT_AND_EXPR, "an", OVL_OP_FLAG_BINARY)
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103 DEF_OPERATOR ("|", BIT_IOR_EXPR, "or", OVL_OP_FLAG_BINARY)
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104 DEF_OPERATOR ("^", BIT_XOR_EXPR, "eo", OVL_OP_FLAG_BINARY)
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105 DEF_OPERATOR ("<<", LSHIFT_EXPR, "ls", OVL_OP_FLAG_BINARY)
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106 DEF_OPERATOR (">>", RSHIFT_EXPR, "rs", OVL_OP_FLAG_BINARY)
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107 DEF_OPERATOR ("==", EQ_EXPR, "eq", OVL_OP_FLAG_BINARY)
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108 DEF_OPERATOR ("!=", NE_EXPR, "ne", OVL_OP_FLAG_BINARY)
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109 DEF_OPERATOR ("<", LT_EXPR, "lt", OVL_OP_FLAG_BINARY)
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110 DEF_OPERATOR (">", GT_EXPR, "gt", OVL_OP_FLAG_BINARY)
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111 DEF_OPERATOR ("<=", LE_EXPR, "le", OVL_OP_FLAG_BINARY)
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112 DEF_OPERATOR (">=", GE_EXPR, "ge", OVL_OP_FLAG_BINARY)
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113 DEF_OPERATOR ("&&", TRUTH_ANDIF_EXPR, "aa", OVL_OP_FLAG_BINARY)
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114 DEF_OPERATOR ("||", TRUTH_ORIF_EXPR, "oo", OVL_OP_FLAG_BINARY)
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115 DEF_OPERATOR (",", COMPOUND_EXPR, "cm", OVL_OP_FLAG_BINARY)
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116 DEF_OPERATOR ("->*", MEMBER_REF, "pm", OVL_OP_FLAG_BINARY)
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117 DEF_OPERATOR (".*", DOTSTAR_EXPR, "ds", OVL_OP_FLAG_BINARY)
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118 DEF_OPERATOR ("[]", ARRAY_REF, "ix", OVL_OP_FLAG_BINARY)
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119 DEF_OPERATOR ("++", POSTINCREMENT_EXPR, "pp", OVL_OP_FLAG_BINARY)
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120 DEF_OPERATOR ("--", POSTDECREMENT_EXPR, "mm", OVL_OP_FLAG_BINARY)
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121
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122 /* Miscellaneous. */
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123 DEF_OPERATOR ("?:", COND_EXPR, "qu", OVL_OP_FLAG_NONE)
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124 DEF_OPERATOR ("()", CALL_EXPR, "cl", OVL_OP_FLAG_NONE)
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125
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126 /* Operators needed for mangling. */
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127 DEF_OPERATOR (NULL, CAST_EXPR, "cv", OVL_OP_FLAG_UNARY)
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128 DEF_OPERATOR (NULL, DYNAMIC_CAST_EXPR, "dc", OVL_OP_FLAG_UNARY)
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129 DEF_OPERATOR (NULL, REINTERPRET_CAST_EXPR, "rc", OVL_OP_FLAG_UNARY)
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130 DEF_OPERATOR (NULL, CONST_CAST_EXPR, "cc", OVL_OP_FLAG_UNARY)
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131 DEF_OPERATOR (NULL, STATIC_CAST_EXPR, "sc", OVL_OP_FLAG_UNARY)
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132 DEF_OPERATOR (NULL, SCOPE_REF, "sr", OVL_OP_FLAG_NONE)
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133 DEF_OPERATOR (NULL, EXPR_PACK_EXPANSION, "sp", OVL_OP_FLAG_NONE)
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134 DEF_OPERATOR (NULL, UNARY_LEFT_FOLD_EXPR, "fl", OVL_OP_FLAG_NONE)
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135 DEF_OPERATOR (NULL, UNARY_RIGHT_FOLD_EXPR, "fr", OVL_OP_FLAG_NONE)
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136 DEF_OPERATOR (NULL, BINARY_LEFT_FOLD_EXPR, "fL", OVL_OP_FLAG_NONE)
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137 DEF_OPERATOR (NULL, BINARY_RIGHT_FOLD_EXPR, "fR", OVL_OP_FLAG_NONE)
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138
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139 #ifdef OPERATOR_TRANSITION
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140 OPERATOR_TRANSITION
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141 #undef OPERATOR_TRANSITION
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142 #endif
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143
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144 /* Assignment operators. */
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145 DEF_ASSN_OPERATOR ("=", NOP_EXPR, "aS")
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146 DEF_ASSN_OPERATOR ("+=", PLUS_EXPR, "pL")
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147 DEF_ASSN_OPERATOR ("-=", MINUS_EXPR, "mI")
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148 DEF_ASSN_OPERATOR ("*=", MULT_EXPR, "mL")
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149 DEF_ASSN_OPERATOR ("/=", TRUNC_DIV_EXPR, "dV")
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150 DEF_ASSN_OPERATOR ("%=", TRUNC_MOD_EXPR, "rM")
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151 DEF_ASSN_OPERATOR ("&=", BIT_AND_EXPR, "aN")
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152 DEF_ASSN_OPERATOR ("|=", BIT_IOR_EXPR, "oR")
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153 DEF_ASSN_OPERATOR ("^=", BIT_XOR_EXPR, "eO")
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154 DEF_ASSN_OPERATOR ("<<=", LSHIFT_EXPR, "lS")
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155 DEF_ASSN_OPERATOR (">>=", RSHIFT_EXPR, "rS")
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156
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157 #undef DEF_ASSN_OPERATOR
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158 #undef DEF_OPERATOR
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