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 | // Box.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 : Rob Schluntz |
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12 | // Last Modified On : Thu Jul 30 14:35:40 2015 |
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13 | // Update Count : 54 |
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14 | // |
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15 | |
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16 | #include <set> |
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17 | #include <stack> |
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18 | #include <string> |
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19 | #include <iterator> |
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20 | #include <algorithm> |
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21 | #include <cassert> |
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22 | |
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23 | #include "Box.h" |
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24 | #include "PolyMutator.h" |
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25 | #include "FindFunction.h" |
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26 | #include "ScrubTyVars.h" |
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27 | |
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28 | #include "Parser/ParseNode.h" |
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29 | |
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30 | #include "SynTree/Type.h" |
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31 | #include "SynTree/Expression.h" |
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32 | #include "SynTree/Initializer.h" |
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33 | #include "SynTree/Statement.h" |
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34 | #include "SynTree/Mutator.h" |
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35 | |
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36 | #include "ResolvExpr/TypeEnvironment.h" |
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37 | |
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38 | #include "SymTab/Mangler.h" |
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39 | |
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40 | #include "SemanticError.h" |
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41 | #include "UniqueName.h" |
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42 | #include "utility.h" |
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43 | |
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44 | #include <ext/functional> // temporary |
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45 | |
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46 | namespace GenPoly { |
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47 | namespace { |
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48 | const std::list<Label> noLabels; |
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49 | |
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50 | class Pass1 : public PolyMutator { |
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51 | public: |
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52 | Pass1(); |
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53 | virtual Expression *mutate( ApplicationExpr *appExpr ); |
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54 | virtual Expression *mutate( AddressExpr *addrExpr ); |
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55 | virtual Expression *mutate( UntypedExpr *expr ); |
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56 | virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ); |
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57 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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58 | virtual Expression *mutate( CommaExpr *commaExpr ); |
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59 | virtual Expression *mutate( ConditionalExpr *condExpr ); |
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60 | virtual Statement *mutate(ReturnStmt *catchStmt); |
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61 | virtual Type *mutate( PointerType *pointerType ); |
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62 | virtual Type *mutate( FunctionType *pointerType ); |
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63 | |
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64 | virtual void doBeginScope(); |
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65 | virtual void doEndScope(); |
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66 | private: |
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67 | void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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68 | Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ); |
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69 | Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ); |
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70 | Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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71 | void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars ); |
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72 | void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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73 | void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ); |
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74 | void findAssignOps( const std::list< TypeDecl *> &forall ); |
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75 | void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ); |
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76 | FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ); |
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77 | Expression *handleIntrinsics( ApplicationExpr *appExpr ); |
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78 | ObjectDecl *makeTemporary( Type *type ); |
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79 | |
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80 | std::map< std::string, DeclarationWithType *> assignOps; |
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81 | typedef std::map< std::string, FunctionDecl *> AdapterMap; |
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82 | std::stack< AdapterMap > adapters; |
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83 | DeclarationWithType *retval; |
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84 | bool useRetval; |
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85 | UniqueName tempNamer; |
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86 | }; |
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87 | |
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88 | class Pass2 : public PolyMutator { |
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89 | public: |
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90 | Pass2(); |
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91 | template< typename DeclClass > |
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92 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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93 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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94 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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95 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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96 | virtual TypedefDecl *mutate( TypedefDecl *typedefDecl ); |
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97 | virtual Type *mutate( PointerType *pointerType ); |
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98 | virtual Type *mutate( FunctionType *funcType ); |
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99 | private: |
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100 | void addAdapters( FunctionType *functionType ); |
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101 | |
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102 | std::map< UniqueId, std::string > adapterName; |
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103 | }; |
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104 | |
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105 | class Pass3 : public PolyMutator { |
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106 | public: |
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107 | template< typename DeclClass > |
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108 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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109 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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110 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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111 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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112 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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113 | virtual Statement *mutate( DeclStmt *declStmt ); |
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114 | virtual Type *mutate( PointerType *pointerType ); |
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115 | virtual Type *mutate( FunctionType *funcType ); |
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116 | private: |
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117 | }; |
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118 | |
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119 | } // anonymous namespace |
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120 | |
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121 | void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) { |
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122 | for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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123 | if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) { |
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124 | (*i)->print( os ); |
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125 | os << std::endl; |
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126 | } // if |
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127 | } // for |
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128 | } |
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129 | |
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130 | void box( std::list< Declaration *>& translationUnit ) { |
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131 | Pass1 pass1; |
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132 | Pass2 pass2; |
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133 | Pass3 pass3; |
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134 | mutateAll( translationUnit, pass1 ); |
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135 | mutateAll( translationUnit, pass2 ); |
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136 | mutateAll( translationUnit, pass3 ); |
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137 | } |
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138 | |
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139 | ////////////////////////////////////////// Pass1 //////////////////////////////////////////////////// |
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140 | |
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141 | namespace { |
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142 | std::string makeAdapterName( const std::string &mangleName ) { |
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143 | return "_adapter" + mangleName; |
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144 | } |
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145 | |
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146 | bool isPolyRet( FunctionType *function, std::string &name, const TyVarMap &otherTyVars ) { |
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147 | bool doTransform = false; |
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148 | if ( ! function->get_returnVals().empty() ) { |
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149 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( function->get_returnVals().front()->get_type() ) ) { |
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150 | |
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151 | // figure out if the return type is specified by a type parameter |
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152 | for ( std::list< TypeDecl *>::const_iterator tyVar = function->get_forall().begin(); tyVar != function->get_forall().end(); ++tyVar ) { |
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153 | if ( (*tyVar)->get_name() == typeInst->get_name() ) { |
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154 | doTransform = true; |
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155 | name = typeInst->get_name(); |
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156 | break; |
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157 | } // if |
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158 | } // for |
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159 | if ( ! doTransform && otherTyVars.find( typeInst->get_name() ) != otherTyVars.end() ) { |
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160 | doTransform = true; |
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161 | } // if |
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162 | } // if |
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163 | } // if |
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164 | return doTransform; |
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165 | } |
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166 | |
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167 | bool isPolyRet( FunctionType *function, std::string &name ) { |
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168 | TyVarMap dummyTyVars; |
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169 | return isPolyRet( function, name, dummyTyVars ); |
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170 | } |
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171 | |
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172 | Pass1::Pass1() |
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173 | : useRetval( false ), tempNamer( "_temp" ) { |
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174 | } |
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175 | |
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176 | bool checkAssignment( DeclarationWithType *decl, std::string &name ) { |
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177 | if ( decl->get_name() == "?=?" ) { |
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178 | if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) { |
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179 | if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) { |
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180 | if ( funType->get_parameters().size() == 2 ) { |
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181 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
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182 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
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183 | name = typeInst->get_name(); |
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184 | return true; |
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185 | } // if |
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186 | } // if |
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187 | } // if |
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188 | } // if |
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189 | } // if |
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190 | } // if |
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191 | return false; |
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192 | } |
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193 | |
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194 | void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) { |
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195 | assignOps.clear(); |
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196 | for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) { |
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197 | for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
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198 | std::string typeName; |
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199 | if ( checkAssignment( *assert, typeName ) ) { |
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200 | assignOps[ typeName ] = *assert; |
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201 | } // if |
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202 | } // for |
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203 | } // for |
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204 | } |
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205 | |
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206 | DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) { |
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207 | if ( functionDecl->get_statements() ) { |
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208 | TyVarMap oldtyVars = scopeTyVars; |
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209 | DeclarationWithType *oldRetval = retval; |
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210 | bool oldUseRetval = useRetval; |
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211 | |
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212 | retval = 0; |
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213 | std::string typeName; |
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214 | if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) { |
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215 | retval = functionDecl->get_functionType()->get_returnVals().front(); |
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216 | |
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217 | // give names to unnamed return values |
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218 | if ( retval->get_name() == "" ) { |
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219 | retval->set_name( "_retparm" ); |
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220 | retval->set_linkage( LinkageSpec::C ); |
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221 | } // if |
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222 | } // if |
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223 | |
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224 | scopeTyVars.clear(); |
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225 | /// std::cerr << "clear\n"; |
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226 | makeTyVarMap( functionDecl->get_functionType(), scopeTyVars ); |
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227 | findAssignOps( functionDecl->get_functionType()->get_forall() ); |
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228 | functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) ); |
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229 | |
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230 | scopeTyVars = oldtyVars; |
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231 | /// std::cerr << "end FunctionDecl: "; |
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232 | /// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
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233 | /// std::cerr << i->first << " "; |
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234 | /// } |
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235 | /// std::cerr << "\n"; |
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236 | retval = oldRetval; |
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237 | useRetval = oldUseRetval; |
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238 | // doEndScope(); |
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239 | } // if |
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240 | return functionDecl; |
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241 | } |
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242 | |
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243 | TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) { |
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244 | /// std::cerr << "add " << typeDecl->get_name() << "\n"; |
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245 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
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246 | return Mutator::mutate( typeDecl ); |
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247 | } |
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248 | |
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249 | Expression *Pass1::mutate( CommaExpr *commaExpr ) { |
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250 | bool oldUseRetval = useRetval; |
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251 | useRetval = false; |
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252 | commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) ); |
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253 | useRetval = oldUseRetval; |
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254 | commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) ); |
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255 | return commaExpr; |
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256 | } |
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257 | |
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258 | Expression *Pass1::mutate( ConditionalExpr *condExpr ) { |
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259 | bool oldUseRetval = useRetval; |
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260 | useRetval = false; |
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261 | condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) ); |
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262 | useRetval = oldUseRetval; |
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263 | condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) ); |
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264 | condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) ); |
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265 | return condExpr; |
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266 | |
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267 | } |
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268 | |
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269 | void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
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270 | for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) { |
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271 | ResolvExpr::EqvClass eqvClass; |
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272 | assert( env ); |
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273 | if ( tyParm->second == TypeDecl::Any ) { |
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274 | Type *concrete = env->lookup( tyParm->first ); |
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275 | if ( concrete ) { |
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276 | arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) ); |
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277 | arg++; |
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278 | } else { |
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279 | throw SemanticError( "unbound type variable in application ", appExpr ); |
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280 | } // if |
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281 | } // if |
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282 | } // for |
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283 | } |
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284 | |
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285 | ObjectDecl *Pass1::makeTemporary( Type *type ) { |
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286 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 ); |
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287 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
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288 | return newObj; |
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289 | } |
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290 | |
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291 | TypeInstType *isPolyType( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
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292 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
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293 | if ( env ) { |
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294 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
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295 | return isPolyType( newType, env, tyVars ); |
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296 | } // if |
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297 | } // if |
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298 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { |
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299 | return typeInst; |
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300 | } else { |
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301 | return 0; |
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302 | } // if |
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303 | } else { |
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304 | return 0; |
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305 | } // if |
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306 | } |
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307 | |
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308 | Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) { |
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309 | if ( useRetval ) { |
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310 | assert( retval ); |
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311 | arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) ); |
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312 | arg++; |
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313 | } else { |
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314 | ObjectDecl *newObj = makeTemporary( retType->clone() ); |
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315 | Expression *paramExpr = new VariableExpr( newObj ); |
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316 | if ( ! isPolyType( newObj->get_type(), env, scopeTyVars ) ) { |
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317 | paramExpr = new AddressExpr( paramExpr ); |
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318 | } // if |
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319 | arg = appExpr->get_args().insert( arg, paramExpr ); |
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320 | arg++; |
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321 | /// stmtsToAdd.push_back( new ExprStmt( noLabels, appExpr ) ); |
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322 | CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) ); |
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323 | commaExpr->set_env( appExpr->get_env() ); |
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324 | appExpr->set_env( 0 ); |
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325 | return commaExpr; |
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326 | } // if |
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327 | return appExpr; |
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328 | } |
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329 | |
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330 | Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) { |
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331 | ResolvExpr::EqvClass eqvClass; |
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332 | assert( env ); |
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333 | Type *concrete = env->lookup( typeName ); |
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334 | if ( concrete == 0 ) { |
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335 | throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr ); |
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336 | } // if |
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337 | return addRetParam( appExpr, function, concrete, arg ); |
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338 | } |
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339 | |
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340 | Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
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341 | Expression *ret = appExpr; |
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342 | if ( ! function->get_returnVals().empty() && isPolyVal( function->get_returnVals().front()->get_type(), tyVars ) ) { |
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343 | ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg ); |
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344 | } // if |
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345 | std::string mangleName = SymTab::Mangler::mangle( function ); |
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346 | std::string adapterName = makeAdapterName( mangleName ); |
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347 | |
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348 | appExpr->get_args().push_front( appExpr->get_function() ); |
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349 | appExpr->set_function( new NameExpr( adapterName ) ); |
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350 | |
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351 | return ret; |
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352 | } |
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353 | |
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354 | void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) { |
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355 | assert( ! arg->get_results().empty() ); |
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356 | /// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) { |
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357 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param ); |
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358 | if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) { |
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359 | if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) { |
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360 | // if the argument's type is a type parameter, we don't need to box again! |
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361 | return; |
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362 | } else if ( arg->get_results().front()->get_isLvalue() ) { |
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363 | // VariableExpr and MemberExpr are lvalues |
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364 | arg = new AddressExpr( arg ); |
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365 | } else { |
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366 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 ); |
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367 | newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right??? |
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368 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
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369 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
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370 | assign->get_args().push_back( new VariableExpr( newObj ) ); |
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371 | assign->get_args().push_back( arg ); |
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372 | stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) ); |
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373 | arg = new AddressExpr( new VariableExpr( newObj ) ); |
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374 | } // if |
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375 | } // if |
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376 | /// } |
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377 | } |
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378 | |
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379 | void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) { |
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380 | Type *newType = formal->clone(); |
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381 | std::list< FunctionType *> functions; |
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382 | // instead of functions needing adapters, this really ought to look for |
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383 | // any function mentioning a polymorphic type |
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384 | findAndReplaceFunction( newType, functions, tyVars, needsAdapter ); |
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385 | if ( ! functions.empty() ) { |
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386 | actual = new CastExpr( actual, newType ); |
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387 | } else { |
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388 | delete newType; |
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389 | } // if |
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390 | } |
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391 | |
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392 | void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
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393 | /// std::cout << "function is "; |
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394 | /// function->print( std::cout ); |
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395 | for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) { |
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396 | /// std::cout << "parameter is "; |
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397 | /// (*param)->print( std::fcout ); |
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398 | /// std::cout << std::endl << "argument is "; |
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399 | /// (*arg)->print( std::cout ); |
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400 | assert( arg != appExpr->get_args().end() ); |
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401 | addCast( *arg, (*param)->get_type(), exprTyVars ); |
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402 | boxParam( (*param)->get_type(), *arg, exprTyVars ); |
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403 | } // for |
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404 | } |
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405 | |
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406 | void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
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407 | std::list< Expression *>::iterator cur = arg; |
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408 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
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409 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
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410 | InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() ); |
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411 | assert( inferParam != appExpr->get_inferParams().end() ); |
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412 | Expression *newExpr = inferParam->second.expr->clone(); |
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413 | addCast( newExpr, (*assert)->get_type(), tyVars ); |
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414 | boxParam( (*assert)->get_type(), newExpr, tyVars ); |
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415 | appExpr->get_args().insert( cur, newExpr ); |
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416 | } // for |
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417 | } // for |
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418 | } |
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419 | |
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420 | void makeRetParm( FunctionType *funcType ) { |
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421 | DeclarationWithType *retParm = funcType->get_returnVals().front(); |
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422 | |
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423 | // make a new parameter that is a pointer to the type of the old return value |
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424 | retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) ); |
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425 | funcType->get_parameters().push_front( retParm ); |
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426 | |
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427 | // we don't need the return value any more |
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428 | funcType->get_returnVals().clear(); |
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429 | } |
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430 | |
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431 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) { |
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432 | // actually make the adapter type |
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433 | FunctionType *adapter = adaptee->clone(); |
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434 | if ( ! adapter->get_returnVals().empty() && isPolyVal( adapter->get_returnVals().front()->get_type(), tyVars ) ) { |
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435 | makeRetParm( adapter ); |
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436 | } // if |
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437 | adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) ); |
---|
438 | return adapter; |
---|
439 | } |
---|
440 | |
---|
441 | Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) { |
---|
442 | assert( param ); |
---|
443 | assert( arg ); |
---|
444 | /// std::cout << "arg type is "; |
---|
445 | /// arg->get_type()->print( std::cout ); |
---|
446 | /// std::cout << "param type is "; |
---|
447 | /// param->get_type()->print( std::cout ); |
---|
448 | /// std::cout << " tyVars are: "; |
---|
449 | /// printTyVarMap( std::cout, tyVars ); |
---|
450 | if ( isPolyVal( realParam->get_type(), tyVars ) ) { |
---|
451 | /// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) { |
---|
452 | /// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() ); |
---|
453 | /// } else { |
---|
454 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
455 | deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) ); |
---|
456 | deref->get_results().push_back( arg->get_type()->clone() ); |
---|
457 | return deref; |
---|
458 | /// } |
---|
459 | } // if |
---|
460 | return new VariableExpr( param ); |
---|
461 | } |
---|
462 | |
---|
463 | void addAdapterParams( ApplicationExpr *adapteeApp, std::list< DeclarationWithType *>::iterator arg, std::list< DeclarationWithType *>::iterator param, std::list< DeclarationWithType *>::iterator paramEnd, std::list< DeclarationWithType *>::iterator realParam, const TyVarMap &tyVars ) { |
---|
464 | UniqueName paramNamer( "_p" ); |
---|
465 | for ( ; param != paramEnd; ++param, ++arg, ++realParam ) { |
---|
466 | if ( (*param)->get_name() == "" ) { |
---|
467 | (*param)->set_name( paramNamer.newName() ); |
---|
468 | (*param)->set_linkage( LinkageSpec::C ); |
---|
469 | } // if |
---|
470 | adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) ); |
---|
471 | } // for |
---|
472 | } |
---|
473 | |
---|
474 | |
---|
475 | |
---|
476 | FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) { |
---|
477 | FunctionType *adapterType = makeAdapterType( adaptee, tyVars ); |
---|
478 | adapterType = ScrubTyVars::scrub( adapterType, tyVars ); |
---|
479 | DeclarationWithType *adapteeDecl = adapterType->get_parameters().front(); |
---|
480 | adapteeDecl->set_name( "_adaptee" ); |
---|
481 | ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) ); |
---|
482 | Statement *bodyStmt; |
---|
483 | |
---|
484 | std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin(); |
---|
485 | std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin(); |
---|
486 | std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin(); |
---|
487 | for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) { |
---|
488 | assert( tyArg != realType->get_forall().end() ); |
---|
489 | std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin(); |
---|
490 | std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin(); |
---|
491 | std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin(); |
---|
492 | for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) { |
---|
493 | assert( assertArg != (*tyArg)->get_assertions().end() ); |
---|
494 | adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) ); |
---|
495 | } // for |
---|
496 | } // for |
---|
497 | |
---|
498 | std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin(); |
---|
499 | std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin(); |
---|
500 | std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin(); |
---|
501 | param++; // skip adaptee parameter |
---|
502 | if ( realType->get_returnVals().empty() ) { |
---|
503 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
504 | bodyStmt = new ExprStmt( noLabels, adapteeApp ); |
---|
505 | } else if ( isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
506 | if ( (*param)->get_name() == "" ) { |
---|
507 | (*param)->set_name( "_ret" ); |
---|
508 | (*param)->set_linkage( LinkageSpec::C ); |
---|
509 | } // if |
---|
510 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
511 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
512 | deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) ); |
---|
513 | assign->get_args().push_back( deref ); |
---|
514 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
515 | assign->get_args().push_back( adapteeApp ); |
---|
516 | bodyStmt = new ExprStmt( noLabels, assign ); |
---|
517 | } else { |
---|
518 | // adapter for a function that returns a monomorphic value |
---|
519 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
520 | bodyStmt = new ReturnStmt( noLabels, adapteeApp ); |
---|
521 | } // if |
---|
522 | CompoundStmt *adapterBody = new CompoundStmt( noLabels ); |
---|
523 | adapterBody->get_kids().push_back( bodyStmt ); |
---|
524 | std::string adapterName = makeAdapterName( mangleName ); |
---|
525 | return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false ); |
---|
526 | } |
---|
527 | |
---|
528 | void Pass1::passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ) { |
---|
529 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
530 | std::list< FunctionType *> functions; |
---|
531 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
532 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
533 | findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
534 | } // for |
---|
535 | } // for |
---|
536 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
537 | findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
538 | } // for |
---|
539 | std::set< std::string > adaptersDone; |
---|
540 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
541 | FunctionType *realFunction = (*funType)->clone(); |
---|
542 | assert( env ); |
---|
543 | env->apply( realFunction ); |
---|
544 | |
---|
545 | std::string mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
546 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
547 | AdapterMap & adapters = Pass1::adapters.top(); |
---|
548 | AdapterMap::iterator adapter = adapters.find( mangleName ); |
---|
549 | |
---|
550 | if ( needsAdapter( realFunction, exprTyVars, true ) ) { |
---|
551 | // the function still contains type variables, which means we are in a polymorphic |
---|
552 | // context and the adapter function is a parameter - call the parameter and don't |
---|
553 | // create a new adapter. |
---|
554 | appExpr->get_args().push_front( new NameExpr( makeAdapterName ( mangleName ) ) ); |
---|
555 | continue; |
---|
556 | } else if ( adapter == adapters.end() ) { |
---|
557 | FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars ); |
---|
558 | adapter = adapters.insert( adapters.begin(), std::pair< std::string, FunctionDecl *>( mangleName, newAdapter ) ); |
---|
559 | stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) ); |
---|
560 | } // if |
---|
561 | assert( adapter != adapters.end() ); |
---|
562 | appExpr->get_args().push_front( new VariableExpr( adapter->second ) ); |
---|
563 | // appExpr->get_args().push_front( new NameExpr( makeAdapterName ( mangleName ) ) ); |
---|
564 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
565 | } // if |
---|
566 | } // for |
---|
567 | } |
---|
568 | |
---|
569 | TypeInstType *isPolyPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
---|
570 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
---|
571 | return isPolyType( ptr->get_base(), env, tyVars ); |
---|
572 | } else if ( env ) { |
---|
573 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
---|
574 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
---|
575 | return isPolyPtr( newType, env, tyVars ); |
---|
576 | } // if |
---|
577 | } // if |
---|
578 | } // if |
---|
579 | return 0; |
---|
580 | } |
---|
581 | |
---|
582 | TypeInstType *isPolyPtrPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
---|
583 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
---|
584 | return isPolyPtr( ptr->get_base(), env, tyVars ); |
---|
585 | } else if ( env ) { |
---|
586 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
---|
587 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
---|
588 | return isPolyPtrPtr( newType, env, tyVars ); |
---|
589 | } // if |
---|
590 | } // if |
---|
591 | } // if |
---|
592 | return 0; |
---|
593 | } |
---|
594 | |
---|
595 | Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, std::string polyName, bool isIncr ) { |
---|
596 | NameExpr *opExpr; |
---|
597 | if ( isIncr ) { |
---|
598 | opExpr = new NameExpr( "?+=?" ); |
---|
599 | } else { |
---|
600 | opExpr = new NameExpr( "?-=?" ); |
---|
601 | } // if |
---|
602 | UntypedExpr *addAssign = new UntypedExpr( opExpr ); |
---|
603 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
604 | addAssign->get_args().push_back( address->get_arg() ); |
---|
605 | } else { |
---|
606 | addAssign->get_args().push_back( appExpr->get_args().front() ); |
---|
607 | } // if |
---|
608 | addAssign->get_args().push_back( new NameExpr( polyName ) ); |
---|
609 | addAssign->get_results().front() = appExpr->get_results().front()->clone(); |
---|
610 | if ( appExpr->get_env() ) { |
---|
611 | addAssign->set_env( appExpr->get_env() ); |
---|
612 | appExpr->set_env( 0 ); |
---|
613 | } // if |
---|
614 | appExpr->get_args().clear(); |
---|
615 | delete appExpr; |
---|
616 | return addAssign; |
---|
617 | } |
---|
618 | |
---|
619 | Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) { |
---|
620 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) { |
---|
621 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) { |
---|
622 | if ( varExpr->get_var()->get_name() == "?[?]" ) { |
---|
623 | assert( ! appExpr->get_results().empty() ); |
---|
624 | assert( appExpr->get_args().size() == 2 ); |
---|
625 | TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars ); |
---|
626 | TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars ); |
---|
627 | assert( ! typeInst1 || ! typeInst2 ); |
---|
628 | UntypedExpr *ret = 0; |
---|
629 | if ( typeInst1 || typeInst2 ) { |
---|
630 | ret = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
631 | } // if |
---|
632 | if ( typeInst1 ) { |
---|
633 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
634 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
635 | multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
636 | ret->get_args().push_back( appExpr->get_args().front() ); |
---|
637 | ret->get_args().push_back( multiply ); |
---|
638 | } else if ( typeInst2 ) { |
---|
639 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
640 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
641 | multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) ); |
---|
642 | ret->get_args().push_back( multiply ); |
---|
643 | ret->get_args().push_back( appExpr->get_args().back() ); |
---|
644 | } // if |
---|
645 | if ( typeInst1 || typeInst2 ) { |
---|
646 | ret->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
647 | if ( appExpr->get_env() ) { |
---|
648 | ret->set_env( appExpr->get_env() ); |
---|
649 | appExpr->set_env( 0 ); |
---|
650 | } // if |
---|
651 | appExpr->get_args().clear(); |
---|
652 | delete appExpr; |
---|
653 | return ret; |
---|
654 | } // if |
---|
655 | } else if ( varExpr->get_var()->get_name() == "*?" ) { |
---|
656 | assert( ! appExpr->get_results().empty() ); |
---|
657 | assert( ! appExpr->get_args().empty() ); |
---|
658 | if ( isPolyType( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
659 | Expression *ret = appExpr->get_args().front(); |
---|
660 | delete ret->get_results().front(); |
---|
661 | ret->get_results().front() = appExpr->get_results().front()->clone(); |
---|
662 | if ( appExpr->get_env() ) { |
---|
663 | ret->set_env( appExpr->get_env() ); |
---|
664 | appExpr->set_env( 0 ); |
---|
665 | } // if |
---|
666 | appExpr->get_args().clear(); |
---|
667 | delete appExpr; |
---|
668 | return ret; |
---|
669 | } // if |
---|
670 | } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) { |
---|
671 | assert( ! appExpr->get_results().empty() ); |
---|
672 | assert( appExpr->get_args().size() == 1 ); |
---|
673 | if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
674 | Type *tempType = appExpr->get_results().front()->clone(); |
---|
675 | if ( env ) { |
---|
676 | env->apply( tempType ); |
---|
677 | } // if |
---|
678 | ObjectDecl *newObj = makeTemporary( tempType ); |
---|
679 | VariableExpr *tempExpr = new VariableExpr( newObj ); |
---|
680 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
681 | assignExpr->get_args().push_back( tempExpr->clone() ); |
---|
682 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
683 | assignExpr->get_args().push_back( address->get_arg()->clone() ); |
---|
684 | } else { |
---|
685 | assignExpr->get_args().push_back( appExpr->get_args().front()->clone() ); |
---|
686 | } // if |
---|
687 | CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "?++" ) ); |
---|
688 | return new CommaExpr( firstComma, tempExpr ); |
---|
689 | } // if |
---|
690 | } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) { |
---|
691 | assert( ! appExpr->get_results().empty() ); |
---|
692 | assert( appExpr->get_args().size() == 1 ); |
---|
693 | if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
694 | return makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "++?" ); |
---|
695 | } // if |
---|
696 | } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) { |
---|
697 | assert( ! appExpr->get_results().empty() ); |
---|
698 | assert( appExpr->get_args().size() == 2 ); |
---|
699 | TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars ); |
---|
700 | TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars ); |
---|
701 | if ( typeInst1 && typeInst2 ) { |
---|
702 | UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) ); |
---|
703 | divide->get_args().push_back( appExpr ); |
---|
704 | divide->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
705 | divide->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
706 | if ( appExpr->get_env() ) { |
---|
707 | divide->set_env( appExpr->get_env() ); |
---|
708 | appExpr->set_env( 0 ); |
---|
709 | } // if |
---|
710 | return divide; |
---|
711 | } else if ( typeInst1 ) { |
---|
712 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
713 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
714 | multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
715 | appExpr->get_args().back() = multiply; |
---|
716 | } else if ( typeInst2 ) { |
---|
717 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
718 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
719 | multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) ); |
---|
720 | appExpr->get_args().front() = multiply; |
---|
721 | } // if |
---|
722 | } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) { |
---|
723 | assert( ! appExpr->get_results().empty() ); |
---|
724 | assert( appExpr->get_args().size() == 2 ); |
---|
725 | TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ); |
---|
726 | if ( typeInst ) { |
---|
727 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
728 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
729 | multiply->get_args().push_back( new NameExpr( typeInst->get_name() ) ); |
---|
730 | appExpr->get_args().back() = multiply; |
---|
731 | } // if |
---|
732 | } // if |
---|
733 | return appExpr; |
---|
734 | } // if |
---|
735 | } // if |
---|
736 | return 0; |
---|
737 | } |
---|
738 | |
---|
739 | Expression *Pass1::mutate( ApplicationExpr *appExpr ) { |
---|
740 | /// std::cerr << "mutate appExpr: "; |
---|
741 | /// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
742 | /// std::cerr << i->first << " "; |
---|
743 | /// } |
---|
744 | /// std::cerr << "\n"; |
---|
745 | bool oldUseRetval = useRetval; |
---|
746 | useRetval = false; |
---|
747 | appExpr->get_function()->acceptMutator( *this ); |
---|
748 | mutateAll( appExpr->get_args(), *this ); |
---|
749 | useRetval = oldUseRetval; |
---|
750 | |
---|
751 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
752 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
753 | assert( pointer ); |
---|
754 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
755 | assert( function ); |
---|
756 | |
---|
757 | if ( Expression *newExpr = handleIntrinsics( appExpr ) ) { |
---|
758 | return newExpr; |
---|
759 | } // if |
---|
760 | |
---|
761 | Expression *ret = appExpr; |
---|
762 | |
---|
763 | std::list< Expression *>::iterator arg = appExpr->get_args().begin(); |
---|
764 | std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin(); |
---|
765 | |
---|
766 | std::string typeName; |
---|
767 | if ( isPolyRet( function, typeName ) ) { |
---|
768 | ret = addPolyRetParam( appExpr, function, typeName, arg ); |
---|
769 | } else if ( needsAdapter( function, scopeTyVars ) ) { |
---|
770 | /// std::cerr << "needs adapter: "; |
---|
771 | /// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
772 | /// std::cerr << i->first << " "; |
---|
773 | /// } |
---|
774 | /// std::cerr << "\n"; |
---|
775 | // change the application so it calls the adapter rather than the passed function |
---|
776 | ret = applyAdapter( appExpr, function, arg, scopeTyVars ); |
---|
777 | } // if |
---|
778 | arg = appExpr->get_args().begin(); |
---|
779 | |
---|
780 | TyVarMap exprTyVars; |
---|
781 | makeTyVarMap( function, exprTyVars ); |
---|
782 | |
---|
783 | passTypeVars( appExpr, arg, exprTyVars ); |
---|
784 | addInferredParams( appExpr, function, arg, exprTyVars ); |
---|
785 | |
---|
786 | arg = paramBegin; |
---|
787 | |
---|
788 | boxParams( appExpr, function, arg, exprTyVars ); |
---|
789 | |
---|
790 | passAdapters( appExpr, function, exprTyVars ); |
---|
791 | |
---|
792 | return ret; |
---|
793 | } |
---|
794 | |
---|
795 | Expression *Pass1::mutate( UntypedExpr *expr ) { |
---|
796 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), env, scopeTyVars ) ) { |
---|
797 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
798 | if ( name->get_name() == "*?" ) { |
---|
799 | Expression *ret = expr->get_args().front(); |
---|
800 | expr->get_args().clear(); |
---|
801 | delete expr; |
---|
802 | return ret->acceptMutator( *this ); |
---|
803 | } // if |
---|
804 | } // if |
---|
805 | } // if |
---|
806 | return PolyMutator::mutate( expr ); |
---|
807 | } |
---|
808 | |
---|
809 | Expression *Pass1::mutate( AddressExpr *addrExpr ) { |
---|
810 | assert( ! addrExpr->get_arg()->get_results().empty() ); |
---|
811 | addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) ); |
---|
812 | if ( isPolyType( addrExpr->get_arg()->get_results().front(), env, scopeTyVars ) ) { |
---|
813 | Expression *ret = addrExpr->get_arg(); |
---|
814 | delete ret->get_results().front(); |
---|
815 | ret->get_results().front() = addrExpr->get_results().front()->clone(); |
---|
816 | addrExpr->set_arg( 0 ); |
---|
817 | delete addrExpr; |
---|
818 | return ret; |
---|
819 | } else { |
---|
820 | return addrExpr; |
---|
821 | } // if |
---|
822 | } |
---|
823 | |
---|
824 | Statement * Pass1::mutate(ReturnStmt *retStmt) { |
---|
825 | // a cast expr on a polymorphic return value is either redundant or invalid |
---|
826 | while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( retStmt->get_expr() ) ) { |
---|
827 | retStmt->set_expr( castExpr->get_arg() ); |
---|
828 | retStmt->get_expr()->set_env( castExpr->get_env() ); |
---|
829 | castExpr->set_env( 0 ); |
---|
830 | castExpr->set_arg( 0 ); |
---|
831 | delete castExpr; |
---|
832 | } |
---|
833 | if ( retval && retStmt->get_expr() ) { |
---|
834 | assert( ! retStmt->get_expr()->get_results().empty() ); |
---|
835 | if ( retStmt->get_expr()->get_results().front()->get_isLvalue() ) { |
---|
836 | /// retStmt->set_expr( mutateExpression( retStmt->get_expr() ) ); |
---|
837 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() ); |
---|
838 | assert( typeInst ); |
---|
839 | std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() ); |
---|
840 | if ( assignIter == assignOps.end() ) { |
---|
841 | throw SemanticError( "Attempt to return dtype or ftype object in ", retStmt->get_expr() ); |
---|
842 | } // if |
---|
843 | ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) ); |
---|
844 | Expression *retParm = new NameExpr( retval->get_name() ); |
---|
845 | retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) ); |
---|
846 | assignExpr->get_args().push_back( retParm ); |
---|
847 | assignExpr->get_args().push_back( retStmt->get_expr() ); |
---|
848 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) ); |
---|
849 | } else { |
---|
850 | useRetval = true; |
---|
851 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( retStmt->get_expr() ) ) ); |
---|
852 | useRetval = false; |
---|
853 | } // if |
---|
854 | retStmt->set_expr( 0 ); |
---|
855 | } else { |
---|
856 | retStmt->set_expr( mutateExpression( retStmt->get_expr() ) ); |
---|
857 | } // if |
---|
858 | return retStmt; |
---|
859 | } |
---|
860 | |
---|
861 | Type * Pass1::mutate( PointerType *pointerType ) { |
---|
862 | TyVarMap oldtyVars = scopeTyVars; |
---|
863 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
864 | |
---|
865 | Type *ret = Mutator::mutate( pointerType ); |
---|
866 | |
---|
867 | scopeTyVars = oldtyVars; |
---|
868 | return ret; |
---|
869 | } |
---|
870 | |
---|
871 | Type * Pass1::mutate( FunctionType *functionType ) { |
---|
872 | TyVarMap oldtyVars = scopeTyVars; |
---|
873 | makeTyVarMap( functionType, scopeTyVars ); |
---|
874 | |
---|
875 | Type *ret = Mutator::mutate( functionType ); |
---|
876 | |
---|
877 | scopeTyVars = oldtyVars; |
---|
878 | return ret; |
---|
879 | } |
---|
880 | |
---|
881 | void Pass1::doBeginScope() { |
---|
882 | adapters.push(AdapterMap()); |
---|
883 | } |
---|
884 | |
---|
885 | void Pass1::doEndScope() { |
---|
886 | adapters.pop(); |
---|
887 | } |
---|
888 | |
---|
889 | ////////////////////////////////////////// Pass2 //////////////////////////////////////////////////// |
---|
890 | |
---|
891 | Pass2::Pass2() {} |
---|
892 | |
---|
893 | void Pass2::addAdapters( FunctionType *functionType ) { |
---|
894 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
895 | std::list< FunctionType *> functions; |
---|
896 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
897 | Type *orig = (*arg)->get_type(); |
---|
898 | findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter ); |
---|
899 | (*arg)->set_type( orig ); |
---|
900 | } |
---|
901 | std::set< std::string > adaptersDone; |
---|
902 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
903 | std::string mangleName = SymTab::Mangler::mangle( *funType ); |
---|
904 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
905 | std::string adapterName = makeAdapterName( mangleName ); |
---|
906 | paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ); |
---|
907 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
908 | } |
---|
909 | } |
---|
910 | /// deleteAll( functions ); |
---|
911 | } |
---|
912 | |
---|
913 | template< typename DeclClass > |
---|
914 | DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) { |
---|
915 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
916 | |
---|
917 | return ret; |
---|
918 | } |
---|
919 | |
---|
920 | DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) { |
---|
921 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
922 | } |
---|
923 | |
---|
924 | ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) { |
---|
925 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
926 | } |
---|
927 | |
---|
928 | TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) { |
---|
929 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
930 | if ( typeDecl->get_base() ) { |
---|
931 | return handleDecl( typeDecl, typeDecl->get_base() ); |
---|
932 | } else { |
---|
933 | return Mutator::mutate( typeDecl ); |
---|
934 | } |
---|
935 | } |
---|
936 | |
---|
937 | TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) { |
---|
938 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
939 | } |
---|
940 | |
---|
941 | Type * Pass2::mutate( PointerType *pointerType ) { |
---|
942 | TyVarMap oldtyVars = scopeTyVars; |
---|
943 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
944 | |
---|
945 | Type *ret = Mutator::mutate( pointerType ); |
---|
946 | |
---|
947 | scopeTyVars = oldtyVars; |
---|
948 | return ret; |
---|
949 | } |
---|
950 | |
---|
951 | Type *Pass2::mutate( FunctionType *funcType ) { |
---|
952 | TyVarMap oldtyVars = scopeTyVars; |
---|
953 | makeTyVarMap( funcType, scopeTyVars ); |
---|
954 | |
---|
955 | std::string typeName; |
---|
956 | if ( isPolyRet( funcType, typeName ) ) { |
---|
957 | DeclarationWithType *ret = funcType->get_returnVals().front(); |
---|
958 | ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) ); |
---|
959 | funcType->get_parameters().push_front( ret ); |
---|
960 | funcType->get_returnVals().pop_front(); |
---|
961 | } |
---|
962 | |
---|
963 | std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin(); |
---|
964 | std::list< DeclarationWithType *> inferredParams; |
---|
965 | ObjectDecl *newObj = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 ); |
---|
966 | /// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ); |
---|
967 | for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) { |
---|
968 | ObjectDecl *thisParm; |
---|
969 | if ( (*tyParm)->get_kind() == TypeDecl::Any ) { |
---|
970 | thisParm = newObj->clone(); |
---|
971 | thisParm->set_name( (*tyParm)->get_name() ); |
---|
972 | last = funcType->get_parameters().insert( last, thisParm ); |
---|
973 | ++last; |
---|
974 | } |
---|
975 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) { |
---|
976 | /// *assert = (*assert)->acceptMutator( *this ); |
---|
977 | inferredParams.push_back( *assert ); |
---|
978 | } |
---|
979 | (*tyParm)->get_assertions().clear(); |
---|
980 | } |
---|
981 | delete newObj; |
---|
982 | funcType->get_parameters().splice( last, inferredParams ); |
---|
983 | addAdapters( funcType ); |
---|
984 | mutateAll( funcType->get_returnVals(), *this ); |
---|
985 | mutateAll( funcType->get_parameters(), *this ); |
---|
986 | |
---|
987 | scopeTyVars = oldtyVars; |
---|
988 | return funcType; |
---|
989 | } |
---|
990 | |
---|
991 | ////////////////////////////////////////// Pass3 //////////////////////////////////////////////////// |
---|
992 | |
---|
993 | template< typename DeclClass > |
---|
994 | DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) { |
---|
995 | TyVarMap oldtyVars = scopeTyVars; |
---|
996 | makeTyVarMap( type, scopeTyVars ); |
---|
997 | |
---|
998 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
999 | ScrubTyVars::scrub( decl, scopeTyVars ); |
---|
1000 | |
---|
1001 | scopeTyVars = oldtyVars; |
---|
1002 | return ret; |
---|
1003 | } |
---|
1004 | |
---|
1005 | ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) { |
---|
1006 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
1007 | } |
---|
1008 | |
---|
1009 | DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) { |
---|
1010 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
1011 | } |
---|
1012 | |
---|
1013 | TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) { |
---|
1014 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
1015 | } |
---|
1016 | |
---|
1017 | TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) { |
---|
1018 | /// Initializer *init = 0; |
---|
1019 | /// std::list< Expression *> designators; |
---|
1020 | /// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1021 | /// if ( typeDecl->get_base() ) { |
---|
1022 | /// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators ); |
---|
1023 | /// } |
---|
1024 | /// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init ); |
---|
1025 | |
---|
1026 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1027 | return Mutator::mutate( typeDecl ); |
---|
1028 | } |
---|
1029 | |
---|
1030 | Type * Pass3::mutate( PointerType *pointerType ) { |
---|
1031 | TyVarMap oldtyVars = scopeTyVars; |
---|
1032 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1033 | |
---|
1034 | Type *ret = Mutator::mutate( pointerType ); |
---|
1035 | |
---|
1036 | scopeTyVars = oldtyVars; |
---|
1037 | return ret; |
---|
1038 | } |
---|
1039 | |
---|
1040 | Type * Pass3::mutate( FunctionType *functionType ) { |
---|
1041 | TyVarMap oldtyVars = scopeTyVars; |
---|
1042 | makeTyVarMap( functionType, scopeTyVars ); |
---|
1043 | |
---|
1044 | Type *ret = Mutator::mutate( functionType ); |
---|
1045 | |
---|
1046 | scopeTyVars = oldtyVars; |
---|
1047 | return ret; |
---|
1048 | } |
---|
1049 | |
---|
1050 | Statement *Pass3::mutate( DeclStmt *declStmt ) { |
---|
1051 | if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) { |
---|
1052 | if ( isPolyVal( objectDecl->get_type(), scopeTyVars ) ) { |
---|
1053 | // change initialization of a polymorphic value object |
---|
1054 | // to allocate storage with alloca |
---|
1055 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( objectDecl->get_type() ); |
---|
1056 | assert( typeInst ); |
---|
1057 | UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) ); |
---|
1058 | alloc->get_args().push_back( new NameExpr( typeInst->get_name() ) ); |
---|
1059 | |
---|
1060 | delete objectDecl->get_init(); |
---|
1061 | |
---|
1062 | std::list<Expression*> designators; |
---|
1063 | objectDecl->set_init( new SingleInit( alloc, designators ) ); |
---|
1064 | } |
---|
1065 | } |
---|
1066 | return Mutator::mutate( declStmt ); |
---|
1067 | } |
---|
1068 | } // anonymous namespace |
---|
1069 | } // namespace GenPoly |
---|
1070 | |
---|
1071 | // Local Variables: // |
---|
1072 | // tab-width: 4 // |
---|
1073 | // mode: c++ // |
---|
1074 | // compile-command: "make install" // |
---|
1075 | // End: // |
---|