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 | // GenType.cc -- |
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8 | // |
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9 | // Author : Richard C. Bilson |
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10 | // Created On : Mon May 18 07:44:20 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Mon May 18 23:38:22 2015 |
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13 | // Update Count : 2 |
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14 | // |
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15 | |
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16 | #include <strstream> |
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17 | #include <cassert> |
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18 | |
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19 | #include "GenType.h" |
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20 | #include "CodeGenerator2.h" |
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21 | #include "SynTree/Visitor.h" |
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22 | #include "SynTree/Type.h" |
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23 | #include "SynTree/Expression.h" |
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24 | |
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25 | namespace CodeGen { |
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26 | class GenType : public Visitor { |
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27 | public: |
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28 | GenType( const std::string &typeString ); |
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29 | std::string get_typeString() const { return typeString; } |
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30 | void set_typeString( const std::string &newValue ) { typeString = newValue; } |
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31 | |
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32 | virtual void visit( FunctionType *funcType ); |
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33 | virtual void visit( VoidType *voidType ); |
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34 | virtual void visit( BasicType *basicType ); |
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35 | virtual void visit( PointerType *pointerType ); |
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36 | virtual void visit( ArrayType *arrayType ); |
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37 | virtual void visit( StructInstType *structInst ); |
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38 | virtual void visit( UnionInstType *unionInst ); |
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39 | virtual void visit( EnumInstType *enumInst ); |
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40 | virtual void visit( TypeInstType *typeInst ); |
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41 | |
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42 | private: |
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43 | void handleQualifiers( Type *type ); |
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44 | void genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic ); |
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45 | |
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46 | std::string typeString; |
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47 | }; |
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48 | |
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49 | std::string genType( Type *type, const std::string &baseString ) { |
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50 | GenType gt( baseString ); |
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51 | type->accept( gt ); |
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52 | return gt.get_typeString(); |
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53 | } |
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54 | |
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55 | GenType::GenType( const std::string &typeString ) : typeString( typeString ) {} |
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56 | |
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57 | void GenType::visit( VoidType *voidType ) { |
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58 | typeString = "void " + typeString; |
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59 | handleQualifiers( voidType ); |
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60 | } |
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61 | |
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62 | void GenType::visit( BasicType *basicType ) { |
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63 | BasicType::Kind kind = basicType->get_kind(); |
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64 | assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES ); |
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65 | typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString; |
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66 | handleQualifiers( basicType ); |
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67 | } |
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68 | |
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69 | void GenType::genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic ) { |
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70 | std::ostrstream os; |
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71 | if ( typeString != "" ) { |
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72 | if ( typeString[ 0 ] == '*' ) { |
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73 | os << "(" << typeString << ")"; |
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74 | } else { |
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75 | os << typeString; |
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76 | } // if |
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77 | } // if |
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78 | os << "["; |
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79 | |
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80 | if ( isStatic ) { |
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81 | os << "static "; |
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82 | } // if |
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83 | if ( qualifiers.isConst ) { |
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84 | os << "const "; |
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85 | } // if |
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86 | if ( qualifiers.isVolatile ) { |
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87 | os << "volatile "; |
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88 | } // if |
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89 | if ( qualifiers.isRestrict ) { |
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90 | os << "__restrict "; |
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91 | } // if |
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92 | if ( qualifiers.isAtomic ) { |
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93 | os << "_Atomic "; |
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94 | } // if |
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95 | if ( isVarLen ) { |
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96 | os << "*"; |
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97 | } // if |
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98 | if ( dimension != 0 ) { |
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99 | CodeGenerator2 cg( os ); |
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100 | dimension->accept( cg ); |
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101 | } // if |
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102 | os << "]"; |
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103 | |
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104 | typeString = std::string( os.str(), os.pcount() ); |
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105 | |
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106 | base->accept( *this ); |
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107 | } |
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108 | |
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109 | void GenType::visit( PointerType *pointerType ) { |
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110 | assert( pointerType->get_base() != 0); |
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111 | if ( pointerType->get_isStatic() || pointerType->get_isVarLen() || pointerType->get_dimension() ) { |
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112 | genArray( pointerType->get_qualifiers(), pointerType->get_base(), pointerType->get_dimension(), pointerType->get_isVarLen(), pointerType->get_isStatic() ); |
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113 | } else { |
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114 | handleQualifiers( pointerType ); |
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115 | if ( typeString[ 0 ] == '?' ) { |
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116 | typeString = "* " + typeString; |
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117 | } else { |
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118 | typeString = "*" + typeString; |
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119 | } // if |
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120 | pointerType->get_base()->accept( *this ); |
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121 | } // if |
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122 | } |
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123 | |
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124 | void GenType::visit( ArrayType *arrayType ){ |
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125 | genArray( arrayType->get_qualifiers(), arrayType->get_base(), arrayType->get_dimension(), arrayType->get_isVarLen(), arrayType->get_isStatic() ); |
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126 | } |
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127 | |
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128 | void GenType::visit( FunctionType *funcType ) { |
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129 | std::ostrstream os; |
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130 | |
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131 | if ( typeString != "" ) { |
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132 | if ( typeString[ 0 ] == '*' ) { |
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133 | os << "(" << typeString << ")"; |
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134 | } else { |
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135 | os << typeString; |
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136 | } // if |
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137 | } // if |
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138 | |
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139 | /************* parameters ***************/ |
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140 | |
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141 | const std::list<DeclarationWithType *> &pars = funcType->get_parameters(); |
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142 | |
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143 | if ( pars.empty() ) { |
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144 | if ( funcType->get_isVarArgs() ) { |
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145 | os << "()"; |
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146 | } else { |
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147 | os << "(void)"; |
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148 | } // if |
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149 | } else { |
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150 | CodeGenerator2 cg( os ); |
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151 | os << "(" ; |
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152 | |
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153 | cg.genCommaList( pars.begin(), pars.end() ); |
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154 | |
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155 | if ( funcType->get_isVarArgs() ){ |
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156 | os << ", ..."; |
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157 | } // if |
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158 | os << ")"; |
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159 | } // if |
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160 | |
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161 | typeString = std::string( os.str(), os.pcount() ); |
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162 | |
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163 | if ( funcType->get_returnVals().size() == 0 ) { |
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164 | typeString = "void " + typeString; |
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165 | } else { |
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166 | funcType->get_returnVals().front()->get_type()->accept( *this ); |
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167 | } // if |
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168 | } |
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169 | |
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170 | void GenType::visit( StructInstType *structInst ) { |
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171 | typeString = "struct " + structInst->get_name() + " " + typeString; |
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172 | handleQualifiers( structInst ); |
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173 | } |
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174 | |
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175 | void GenType::visit( UnionInstType *unionInst ) { |
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176 | typeString = "union " + unionInst->get_name() + " " + typeString; |
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177 | handleQualifiers( unionInst ); |
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178 | } |
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179 | |
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180 | void GenType::visit( EnumInstType *enumInst ) { |
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181 | typeString = "enum " + enumInst->get_name() + " " + typeString; |
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182 | handleQualifiers( enumInst ); |
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183 | } |
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184 | |
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185 | void GenType::visit( TypeInstType *typeInst ) { |
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186 | typeString = typeInst->get_name() + " " + typeString; |
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187 | handleQualifiers( typeInst ); |
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188 | } |
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189 | |
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190 | void GenType::handleQualifiers( Type *type ) { |
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191 | if ( type->get_isConst() ) { |
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192 | typeString = "const " + typeString; |
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193 | } // if |
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194 | if ( type->get_isVolatile() ) { |
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195 | typeString = "volatile " + typeString; |
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196 | } // if |
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197 | if ( type->get_isRestrict() ) { |
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198 | typeString = "__restrict " + typeString; |
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199 | } // if |
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200 | if ( type->get_isAtomic() ) { |
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201 | typeString = "_Atomic " + typeString; |
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202 | } // if |
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203 | } |
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204 | } // namespace CodeGen |
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205 | |
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206 | // Local Variables: // |
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207 | // tab-width: 4 // |
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208 | // mode: c++ // |
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209 | // compile-command: "make install" // |
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210 | // End: // |
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