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111
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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) 2000-2017 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 ARITY
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49
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50 The arity of the operator, or -1 if any arity is allowed. (As
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51 for `operator ()'.) Postincrement and postdecrement operators
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52 are marked as binary.
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53
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54 ASSN_P
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55
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56 A boolean value. If nonzero, this is an assignment operator.
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57
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58 Before including this file, you should define DEF_OPERATOR
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59 to take these arguments.
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60
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61 There is code (such as in grok_op_properties) that depends on the
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62 order the operators are presented in this file. In particular,
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63 unary operators must precede binary operators. */
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64
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65 /* Use DEF_SIMPLE_OPERATOR to define a non-assignment operator. Its
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66 arguments are as for DEF_OPERATOR, but there is no need to provide
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67 an ASSIGNMENT_P argument; it is always zero. */
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68
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69 #define DEF_SIMPLE_OPERATOR(NAME, CODE, MANGLING, ARITY) \
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70 DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, cik_simple_op)
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71
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72 /* Use DEF_ASSN_OPERATOR to define an assignment operator. Its
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73 arguments are as for DEF_OPERATOR, but there is no need to provide
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74 an ASSIGNMENT_P argument; it is always one. */
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75
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76 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING, ARITY) \
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77 DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, cik_assign_op)
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78
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79 /* Memory allocation operators. */
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80 DEF_OPERATOR ("new", NEW_EXPR, "nw", -1, cik_newdel_op)
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81 DEF_OPERATOR ("new []", VEC_NEW_EXPR, "na", -1, cik_newdel_op)
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82 DEF_OPERATOR ("delete", DELETE_EXPR, "dl", -1, cik_newdel_op)
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83 DEF_OPERATOR ("delete []", VEC_DELETE_EXPR, "da", -1, cik_newdel_op)
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84
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85 /* Unary operators. */
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86 DEF_SIMPLE_OPERATOR ("+", UNARY_PLUS_EXPR, "ps", 1)
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87 DEF_SIMPLE_OPERATOR ("-", NEGATE_EXPR, "ng", 1)
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88 DEF_SIMPLE_OPERATOR ("&", ADDR_EXPR, "ad", 1)
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89 DEF_SIMPLE_OPERATOR ("*", INDIRECT_REF, "de", 1)
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90 DEF_SIMPLE_OPERATOR ("~", BIT_NOT_EXPR, "co", 1)
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91 DEF_SIMPLE_OPERATOR ("!", TRUTH_NOT_EXPR, "nt", 1)
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92 DEF_SIMPLE_OPERATOR ("++", PREINCREMENT_EXPR, "pp", 1)
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93 DEF_SIMPLE_OPERATOR ("--", PREDECREMENT_EXPR, "mm", 1)
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94 DEF_SIMPLE_OPERATOR ("sizeof", SIZEOF_EXPR, "sz", 1)
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95 /* These are extensions. */
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96 DEF_SIMPLE_OPERATOR ("alignof", ALIGNOF_EXPR, "az", 1)
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97 DEF_SIMPLE_OPERATOR ("__imag__", IMAGPART_EXPR, "v18__imag__", 1)
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98 DEF_SIMPLE_OPERATOR ("__real__", REALPART_EXPR, "v18__real__", 1)
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99
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100 /* The cast operators. */
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101 DEF_SIMPLE_OPERATOR ("", CAST_EXPR, "cv", 1)
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102 DEF_SIMPLE_OPERATOR ("dynamic_cast", DYNAMIC_CAST_EXPR, "dc", 1)
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103 DEF_SIMPLE_OPERATOR ("reinterpret_cast", REINTERPRET_CAST_EXPR, "rc", 1)
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104 DEF_SIMPLE_OPERATOR ("const_cast", CONST_CAST_EXPR, "cc", 1)
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105 DEF_SIMPLE_OPERATOR ("static_cast", STATIC_CAST_EXPR, "sc", 1)
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106
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107 /* Binary operators. */
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108 DEF_SIMPLE_OPERATOR ("+", PLUS_EXPR, "pl", 2)
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109 DEF_SIMPLE_OPERATOR ("-", MINUS_EXPR, "mi", 2)
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110 DEF_SIMPLE_OPERATOR ("*", MULT_EXPR, "ml", 2)
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111 DEF_SIMPLE_OPERATOR ("/", TRUNC_DIV_EXPR, "dv", 2)
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112 DEF_SIMPLE_OPERATOR ("%", TRUNC_MOD_EXPR, "rm", 2)
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113 DEF_SIMPLE_OPERATOR ("&", BIT_AND_EXPR, "an", 2)
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114 DEF_SIMPLE_OPERATOR ("|", BIT_IOR_EXPR, "or", 2)
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115 DEF_SIMPLE_OPERATOR ("^", BIT_XOR_EXPR, "eo", 2)
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116 DEF_SIMPLE_OPERATOR ("<<", LSHIFT_EXPR, "ls", 2)
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117 DEF_SIMPLE_OPERATOR (">>", RSHIFT_EXPR, "rs", 2)
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118 DEF_SIMPLE_OPERATOR ("==", EQ_EXPR, "eq", 2)
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119 DEF_SIMPLE_OPERATOR ("!=", NE_EXPR, "ne", 2)
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120 DEF_SIMPLE_OPERATOR ("<", LT_EXPR, "lt", 2)
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121 DEF_SIMPLE_OPERATOR (">", GT_EXPR, "gt", 2)
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122 DEF_SIMPLE_OPERATOR ("<=", LE_EXPR, "le", 2)
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123 DEF_SIMPLE_OPERATOR (">=", GE_EXPR, "ge", 2)
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124 DEF_SIMPLE_OPERATOR ("&&", TRUTH_ANDIF_EXPR, "aa", 2)
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125 DEF_SIMPLE_OPERATOR ("||", TRUTH_ORIF_EXPR, "oo", 2)
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126 DEF_SIMPLE_OPERATOR (",", COMPOUND_EXPR, "cm", 2)
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127 DEF_SIMPLE_OPERATOR ("->*", MEMBER_REF, "pm", 2)
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128 DEF_SIMPLE_OPERATOR (".*", DOTSTAR_EXPR, "ds", 2)
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129 DEF_SIMPLE_OPERATOR ("->", COMPONENT_REF, "pt", 2)
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130 DEF_SIMPLE_OPERATOR ("[]", ARRAY_REF, "ix", 2)
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131 DEF_SIMPLE_OPERATOR ("++", POSTINCREMENT_EXPR, "pp", 2)
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132 DEF_SIMPLE_OPERATOR ("--", POSTDECREMENT_EXPR, "mm", 2)
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133 /* This one is needed for mangling. */
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134 DEF_SIMPLE_OPERATOR ("::", SCOPE_REF, "sr", 2)
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135
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136 /* Assignment operators. */
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137 DEF_ASSN_OPERATOR ("=", NOP_EXPR, "aS", 2)
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138 DEF_ASSN_OPERATOR ("+=", PLUS_EXPR, "pL", 2)
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139 DEF_ASSN_OPERATOR ("-=", MINUS_EXPR, "mI", 2)
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140 DEF_ASSN_OPERATOR ("*=", MULT_EXPR, "mL", 2)
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141 DEF_ASSN_OPERATOR ("/=", TRUNC_DIV_EXPR, "dV", 2)
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142 DEF_ASSN_OPERATOR ("%=", TRUNC_MOD_EXPR, "rM", 2)
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143 DEF_ASSN_OPERATOR ("&=", BIT_AND_EXPR, "aN", 2)
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144 DEF_ASSN_OPERATOR ("|=", BIT_IOR_EXPR, "oR", 2)
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145 DEF_ASSN_OPERATOR ("^=", BIT_XOR_EXPR, "eO", 2)
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146 DEF_ASSN_OPERATOR ("<<=", LSHIFT_EXPR, "lS", 2)
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147 DEF_ASSN_OPERATOR (">>=", RSHIFT_EXPR, "rS", 2)
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148
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149 /* Ternary operators. */
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150 DEF_SIMPLE_OPERATOR ("?:", COND_EXPR, "qu", 3)
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151
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152 /* Miscellaneous. */
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153 DEF_SIMPLE_OPERATOR ("()", CALL_EXPR, "cl", -1)
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154
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155 /* Variadic templates extension. */
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156 DEF_SIMPLE_OPERATOR ("...", EXPR_PACK_EXPANSION, "sp", 1)
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157 DEF_SIMPLE_OPERATOR ("... +", UNARY_LEFT_FOLD_EXPR, "fl", 2)
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158 DEF_SIMPLE_OPERATOR ("+ ...", UNARY_RIGHT_FOLD_EXPR, "fr", 2)
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159 DEF_SIMPLE_OPERATOR ("+ ... +", BINARY_LEFT_FOLD_EXPR, "fL", 3)
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160 DEF_SIMPLE_OPERATOR ("+ ... +", BINARY_RIGHT_FOLD_EXPR, "fR", 3)
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