1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // ExpressionNode.cc -- |
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8 | // |
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9 | // Author : Rodolfo G. Esteves |
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10 | // Created On : Sat May 16 13:17:07 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Thu Mar 30 17:02:46 2017 |
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13 | // Update Count : 515 |
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14 | // |
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15 | |
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16 | #include <cassert> |
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17 | #include <cctype> |
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18 | #include <climits> |
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19 | #include <cstdio> |
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20 | #include <algorithm> |
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21 | #include <sstream> |
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22 | |
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23 | #include "ParseNode.h" |
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24 | #include "TypeData.h" |
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25 | #include "SynTree/Constant.h" |
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26 | #include "SynTree/Expression.h" |
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27 | #include "SynTree/Declaration.h" |
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28 | #include "Common/UnimplementedError.h" |
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29 | #include "parseutility.h" |
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30 | #include "Common/utility.h" |
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31 | |
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32 | using namespace std; |
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33 | |
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34 | //############################################################################## |
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35 | |
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36 | // Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns: |
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37 | // |
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38 | // prefix action constant action suffix |
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39 | // |
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40 | // Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty: |
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41 | // |
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42 | // constant BEGIN CONT ... |
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43 | // <CONT>(...)? BEGIN 0 ... // possible empty suffix |
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44 | // |
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45 | // because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their |
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46 | // type. |
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47 | |
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48 | Type::Qualifiers emptyQualifiers; // no qualifiers on constants |
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49 | |
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50 | static inline bool checkU( char c ) { return c == 'u' || c == 'U'; } |
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51 | static inline bool checkL( char c ) { return c == 'l' || c == 'L'; } |
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52 | static inline bool checkF( char c ) { return c == 'f' || c == 'F'; } |
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53 | static inline bool checkD( char c ) { return c == 'd' || c == 'D'; } |
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54 | static inline bool checkI( char c ) { return c == 'i' || c == 'I'; } |
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55 | static inline bool checkX( char c ) { return c == 'x' || c == 'X'; } |
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56 | |
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57 | Expression *build_constantInteger( const std::string & str ) { |
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58 | static const BasicType::Kind kind[2][3] = { |
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59 | { BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt }, |
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60 | { BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt }, |
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61 | }; |
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62 | bool dec = true, Unsigned = false; // decimal, unsigned constant |
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63 | int size; // 0 => int, 1 => long, 2 => long long |
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64 | unsigned long long v; // converted integral value |
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65 | size_t last = str.length() - 1; // last character of constant |
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66 | |
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67 | if ( str[0] == '0' ) { // octal/hex constant ? |
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68 | dec = false; |
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69 | if ( last != 0 && checkX( str[1] ) ) { // hex constant ? |
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70 | sscanf( (char *)str.c_str(), "%llx", &v ); |
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71 | //printf( "%llx %llu\n", v, v ); |
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72 | } else { // octal constant |
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73 | sscanf( (char *)str.c_str(), "%llo", &v ); |
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74 | //printf( "%llo %llu\n", v, v ); |
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75 | } // if |
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76 | } else { // decimal constant ? |
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77 | sscanf( (char *)str.c_str(), "%llu", &v ); |
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78 | //printf( "%llu %llu\n", v, v ); |
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79 | } // if |
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80 | |
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81 | if ( v <= INT_MAX ) { // signed int |
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82 | size = 0; |
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83 | } else if ( v <= UINT_MAX && ! dec ) { // unsigned int |
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84 | size = 0; |
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85 | Unsigned = true; // unsigned |
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86 | } else if ( v <= LONG_MAX ) { // signed long int |
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87 | size = 1; |
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88 | } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int |
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89 | size = 1; |
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90 | Unsigned = true; // unsigned long int |
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91 | } else if ( v <= LLONG_MAX ) { // signed long long int |
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92 | size = 2; |
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93 | } else { // unsigned long long int |
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94 | size = 2; |
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95 | Unsigned = true; // unsigned long long int |
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96 | } // if |
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97 | |
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98 | if ( checkU( str[last] ) ) { // suffix 'u' ? |
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99 | Unsigned = true; |
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100 | if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'l' ? |
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101 | size = 1; |
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102 | if ( last > 1 && checkL( str[last - 2] ) ) { // suffix 'll' ? |
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103 | size = 2; |
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104 | } // if |
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105 | } // if |
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106 | } else if ( checkL( str[ last ] ) ) { // suffix 'l' ? |
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107 | size = 1; |
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108 | if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'll' ? |
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109 | size = 2; |
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110 | if ( last > 1 && checkU( str[last - 2] ) ) { // suffix 'u' ? |
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111 | Unsigned = true; |
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112 | } // if |
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113 | } else { |
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114 | if ( last > 0 && checkU( str[last - 1] ) ) { // suffix 'u' ? |
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115 | Unsigned = true; |
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116 | } // if |
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117 | } // if |
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118 | } // if |
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119 | |
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120 | Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[Unsigned][size] ), str ) ); |
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121 | delete &str; // created by lex |
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122 | return ret; |
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123 | } // build_constantInteger |
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124 | |
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125 | Expression *build_constantFloat( const std::string & str ) { |
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126 | static const BasicType::Kind kind[2][3] = { |
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127 | { BasicType::Float, BasicType::Double, BasicType::LongDouble }, |
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128 | { BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex }, |
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129 | }; |
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130 | |
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131 | bool complx = false; // real, complex |
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132 | int size = 1; // 0 => float, 1 => double (default), 2 => long double |
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133 | // floating-point constant has minimum of 2 characters: 1. or .1 |
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134 | size_t last = str.length() - 1; |
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135 | |
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136 | if ( checkI( str[last] ) ) { // imaginary ? |
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137 | complx = true; |
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138 | last -= 1; // backup one character |
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139 | } // if |
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140 | |
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141 | if ( checkF( str[last] ) ) { // float ? |
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142 | size = 0; |
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143 | } else if ( checkD( str[last] ) ) { // double ? |
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144 | size = 1; |
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145 | } else if ( checkL( str[last] ) ) { // long double ? |
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146 | size = 2; |
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147 | } // if |
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148 | if ( ! complx && checkI( str[last - 1] ) ) { // imaginary ? |
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149 | complx = true; |
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150 | } // if |
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151 | |
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152 | Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[complx][size] ), str ) ); |
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153 | delete &str; // created by lex |
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154 | return ret; |
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155 | } // build_constantFloat |
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156 | |
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157 | Expression *build_constantChar( const std::string & str ) { |
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158 | Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::Char ), str ) ); |
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159 | delete &str; // created by lex |
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160 | return ret; |
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161 | } // build_constantChar |
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162 | |
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163 | ConstantExpr *build_constantStr( const std::string & str ) { |
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164 | // string should probably be a primitive type |
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165 | ArrayType *at = new ArrayType( emptyQualifiers, new BasicType( Type::Qualifiers( Type::Const ), BasicType::Char ), |
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166 | new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::UnsignedInt ), |
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167 | toString( str.size()+1-2 ) ) ), // +1 for '\0' and -2 for '"' |
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168 | false, false ); |
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169 | ConstantExpr * ret = new ConstantExpr( Constant( at, str ) ); |
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170 | delete &str; // created by lex |
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171 | return ret; |
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172 | } // build_constantStr |
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173 | |
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174 | Expression *build_constantZeroOne( const std::string & str ) { |
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175 | Expression * ret = new ConstantExpr( Constant( str == "0" ? (Type *)new ZeroType( emptyQualifiers ) : (Type*)new OneType( emptyQualifiers ), str ) ); |
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176 | delete &str; // created by lex |
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177 | return ret; |
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178 | } // build_constantChar |
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179 | |
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180 | Expression * build_field_name_FLOATINGconstant( const std::string & str ) { |
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181 | // str is of the form A.B -> separate at the . and return member expression |
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182 | int a, b; |
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183 | char dot; |
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184 | std::stringstream ss( str ); |
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185 | ss >> a >> dot >> b; |
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186 | UntypedMemberExpr * ret = new UntypedMemberExpr( |
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187 | new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::SignedInt ), toString( b ) ) ), |
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188 | new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::SignedInt ), toString( a ) ) ) ); |
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189 | delete &str; |
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190 | return ret; |
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191 | } // build_field_name_FLOATINGconstant |
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192 | |
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193 | Expression * make_field_name_fraction_constants( Expression * fieldName, Expression * fracts ) { |
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194 | if ( fracts ) { |
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195 | if ( UntypedMemberExpr * memberExpr = dynamic_cast< UntypedMemberExpr * >( fracts ) ) { |
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196 | memberExpr->set_member( make_field_name_fraction_constants( fieldName, memberExpr->get_aggregate() ) ); |
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197 | return memberExpr; |
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198 | } else { |
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199 | return new UntypedMemberExpr( fracts, fieldName ); |
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200 | } |
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201 | } |
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202 | return fieldName; |
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203 | } // make_field_name_fraction_constants |
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204 | |
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205 | Expression * build_field_name_fraction_constants( Expression * fieldName, ExpressionNode * fracts ) { |
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206 | return make_field_name_fraction_constants( fieldName, maybeMoveBuild< Expression >( fracts ) ); |
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207 | } // build_field_name_fraction_constants |
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208 | |
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209 | Expression * build_field_name_REALFRACTIONconstant( const std::string & str ) { |
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210 | assert( str[0] == '.' ); |
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211 | Expression * ret = build_constantInteger( *new std::string( str.substr(1) ) ); |
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212 | delete &str; |
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213 | return ret; |
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214 | } // build_field_name_REALFRACTIONconstant |
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215 | |
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216 | Expression * build_field_name_REALDECIMALconstant( const std::string & str ) { |
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217 | assert( str[str.size()-1] == '.' ); |
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218 | Expression * ret = build_constantInteger( *new std::string( str.substr( 0, str.size()-1 ) ) ); |
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219 | delete &str; |
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220 | return ret; |
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221 | } // build_field_name_REALDECIMALconstant |
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222 | |
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223 | NameExpr * build_varref( const string *name, bool labelp ) { |
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224 | NameExpr *expr = new NameExpr( *name, nullptr ); |
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225 | delete name; |
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226 | return expr; |
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227 | } |
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228 | |
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229 | static const char *OperName[] = { |
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230 | // diadic |
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231 | "SizeOf", "AlignOf", "OffsetOf", "?+?", "?-?", "?*?", "?/?", "?%?", "||", "&&", |
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232 | "?|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?", |
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233 | "?=?", "?@=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?|=?", |
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234 | "?[?]", "...", |
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235 | // monadic |
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236 | "+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--", "&&" |
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237 | }; |
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238 | |
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239 | Expression *build_cast( DeclarationNode *decl_node, ExpressionNode *expr_node ) { |
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240 | Type *targetType = maybeMoveBuildType( decl_node ); |
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241 | if ( dynamic_cast< VoidType * >( targetType ) ) { |
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242 | delete targetType; |
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243 | return new CastExpr( maybeMoveBuild< Expression >(expr_node) ); |
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244 | } else { |
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245 | return new CastExpr( maybeMoveBuild< Expression >(expr_node), targetType ); |
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246 | } // if |
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247 | } |
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248 | |
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249 | Expression *build_fieldSel( ExpressionNode *expr_node, Expression *member ) { |
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250 | UntypedMemberExpr *ret = new UntypedMemberExpr( member, maybeMoveBuild< Expression >(expr_node) ); |
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251 | return ret; |
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252 | } |
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253 | |
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254 | Expression *build_pfieldSel( ExpressionNode *expr_node, Expression *member ) { |
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255 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
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256 | deref->location = expr_node->location; |
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257 | deref->get_args().push_back( maybeMoveBuild< Expression >(expr_node) ); |
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258 | UntypedMemberExpr *ret = new UntypedMemberExpr( member, deref ); |
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259 | return ret; |
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260 | } |
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261 | |
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262 | Expression *build_addressOf( ExpressionNode *expr_node ) { |
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263 | return new AddressExpr( maybeMoveBuild< Expression >(expr_node) ); |
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264 | } |
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265 | Expression *build_sizeOfexpr( ExpressionNode *expr_node ) { |
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266 | return new SizeofExpr( maybeMoveBuild< Expression >(expr_node) ); |
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267 | } |
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268 | Expression *build_sizeOftype( DeclarationNode *decl_node ) { |
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269 | return new SizeofExpr( maybeMoveBuildType( decl_node ) ); |
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270 | } |
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271 | Expression *build_alignOfexpr( ExpressionNode *expr_node ) { |
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272 | return new AlignofExpr( maybeMoveBuild< Expression >(expr_node) ); |
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273 | } |
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274 | Expression *build_alignOftype( DeclarationNode *decl_node ) { |
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275 | return new AlignofExpr( maybeMoveBuildType( decl_node) ); |
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276 | } |
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277 | Expression *build_offsetOf( DeclarationNode *decl_node, NameExpr *member ) { |
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278 | Expression * ret = new UntypedOffsetofExpr( maybeMoveBuildType( decl_node ), member->get_name() ); |
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279 | delete member; |
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280 | return ret; |
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281 | } |
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282 | |
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283 | Expression *build_and_or( ExpressionNode *expr_node1, ExpressionNode *expr_node2, bool kind ) { |
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284 | return new LogicalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), notZeroExpr( maybeMoveBuild< Expression >(expr_node2) ), kind ); |
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285 | } |
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286 | |
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287 | Expression *build_unary_val( OperKinds op, ExpressionNode *expr_node ) { |
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288 | std::list< Expression * > args; |
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289 | args.push_back( maybeMoveBuild< Expression >(expr_node) ); |
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290 | return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args ); |
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291 | } |
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292 | Expression *build_unary_ptr( OperKinds op, ExpressionNode *expr_node ) { |
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293 | std::list< Expression * > args; |
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294 | args.push_back( new AddressExpr( maybeMoveBuild< Expression >(expr_node) ) ); |
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295 | return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args ); |
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296 | } |
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297 | Expression *build_binary_val( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) { |
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298 | std::list< Expression * > args; |
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299 | args.push_back( maybeMoveBuild< Expression >(expr_node1) ); |
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300 | args.push_back( maybeMoveBuild< Expression >(expr_node2) ); |
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301 | return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args ); |
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302 | } |
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303 | Expression *build_binary_ptr( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) { |
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304 | std::list< Expression * > args; |
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305 | args.push_back( new AddressExpr( maybeMoveBuild< Expression >(expr_node1) ) ); |
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306 | args.push_back( maybeMoveBuild< Expression >(expr_node2) ); |
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307 | return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args ); |
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308 | } |
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309 | |
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310 | Expression *build_cond( ExpressionNode *expr_node1, ExpressionNode *expr_node2, ExpressionNode *expr_node3 ) { |
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311 | return new ConditionalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), maybeMoveBuild< Expression >(expr_node2), maybeMoveBuild< Expression >(expr_node3) ); |
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312 | } |
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313 | |
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314 | Expression *build_comma( ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) { |
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315 | return new CommaExpr( maybeMoveBuild< Expression >(expr_node1), maybeMoveBuild< Expression >(expr_node2) ); |
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316 | } |
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317 | |
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318 | Expression *build_attrexpr( NameExpr *var, ExpressionNode * expr_node ) { |
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319 | return new AttrExpr( var, maybeMoveBuild< Expression >(expr_node) ); |
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320 | } |
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321 | Expression *build_attrtype( NameExpr *var, DeclarationNode * decl_node ) { |
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322 | return new AttrExpr( var, maybeMoveBuildType( decl_node ) ); |
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323 | } |
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324 | |
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325 | Expression *build_tuple( ExpressionNode * expr_node ) { |
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326 | std::list< Expression * > exprs; |
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327 | buildMoveList( expr_node, exprs ); |
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328 | return new UntypedTupleExpr( exprs );; |
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329 | } |
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330 | |
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331 | Expression *build_func( ExpressionNode * function, ExpressionNode * expr_node ) { |
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332 | std::list< Expression * > args; |
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333 | buildMoveList( expr_node, args ); |
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334 | return new UntypedExpr( maybeMoveBuild< Expression >(function), args, nullptr ); |
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335 | } |
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336 | |
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337 | Expression *build_range( ExpressionNode * low, ExpressionNode *high ) { |
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338 | return new RangeExpr( maybeMoveBuild< Expression >( low ), maybeMoveBuild< Expression >( high ) ); |
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339 | } |
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340 | |
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341 | Expression *build_asmexpr( ExpressionNode *inout, ConstantExpr *constraint, ExpressionNode *operand ) { |
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342 | return new AsmExpr( maybeMoveBuild< Expression >( inout ), constraint, maybeMoveBuild< Expression >(operand) ); |
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343 | } |
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344 | |
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345 | Expression *build_valexpr( StatementNode *s ) { |
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346 | return new UntypedValofExpr( maybeMoveBuild< Statement >(s), nullptr ); |
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347 | } |
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348 | Expression *build_typevalue( DeclarationNode *decl ) { |
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349 | return new TypeExpr( maybeMoveBuildType( decl ) ); |
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350 | } |
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351 | |
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352 | Expression *build_compoundLiteral( DeclarationNode *decl_node, InitializerNode *kids ) { |
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353 | Declaration * newDecl = maybeBuild< Declaration >(decl_node); // compound literal type |
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354 | if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) { // non-sue compound-literal type |
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355 | return new CompoundLiteralExpr( newDeclWithType->get_type(), maybeMoveBuild< Initializer >(kids) ); |
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356 | // these types do not have associated type information |
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357 | } else if ( StructDecl * newDeclStructDecl = dynamic_cast< StructDecl * >( newDecl ) ) { |
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358 | if ( newDeclStructDecl->has_body() ) { |
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359 | return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl ), maybeMoveBuild< Initializer >(kids) ); |
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360 | } else { |
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361 | return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl->get_name() ), maybeMoveBuild< Initializer >(kids) ); |
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362 | } // if |
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363 | } else if ( UnionDecl * newDeclUnionDecl = dynamic_cast< UnionDecl * >( newDecl ) ) { |
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364 | if ( newDeclUnionDecl->has_body() ) { |
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365 | return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl ), maybeMoveBuild< Initializer >(kids) ); |
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366 | } else { |
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367 | return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl->get_name() ), maybeMoveBuild< Initializer >(kids) ); |
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368 | } // if |
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369 | } else if ( EnumDecl * newDeclEnumDecl = dynamic_cast< EnumDecl * >( newDecl ) ) { |
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370 | if ( newDeclEnumDecl->has_body() ) { |
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371 | return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl ), maybeMoveBuild< Initializer >(kids) ); |
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372 | } else { |
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373 | return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl->get_name() ), maybeMoveBuild< Initializer >(kids) ); |
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374 | } // if |
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375 | } else { |
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376 | assert( false ); |
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377 | } // if |
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378 | } |
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379 | |
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380 | // Local Variables: // |
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381 | // tab-width: 4 // |
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382 | // mode: c++ // |
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383 | // compile-command: "make install" // |
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384 | // End: // |
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