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 : Wed Dec 02 11:52:37 2015 |
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13 | // Update Count : 201 |
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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 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ); |
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51 | |
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52 | class Pass1 : public PolyMutator { |
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53 | public: |
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54 | Pass1(); |
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55 | virtual Expression *mutate( ApplicationExpr *appExpr ); |
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56 | virtual Expression *mutate( AddressExpr *addrExpr ); |
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57 | virtual Expression *mutate( UntypedExpr *expr ); |
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58 | virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ); |
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59 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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60 | virtual Expression *mutate( CommaExpr *commaExpr ); |
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61 | virtual Expression *mutate( ConditionalExpr *condExpr ); |
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62 | virtual Statement *mutate(ReturnStmt *catchStmt); |
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63 | virtual Type *mutate( PointerType *pointerType ); |
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64 | virtual Type *mutate( FunctionType *pointerType ); |
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65 | |
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66 | virtual void doBeginScope(); |
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67 | virtual void doEndScope(); |
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68 | private: |
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69 | void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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70 | Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ); |
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71 | Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ); |
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72 | Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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73 | void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars ); |
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74 | void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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75 | void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ); |
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76 | void findAssignOps( const std::list< TypeDecl *> &forall ); |
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77 | void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ); |
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78 | FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ); |
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79 | Expression *handleIntrinsics( ApplicationExpr *appExpr ); |
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80 | ObjectDecl *makeTemporary( Type *type ); |
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81 | |
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82 | typedef std::map< std::string, DeclarationWithType *> AdapterMap; |
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83 | std::map< std::string, DeclarationWithType *> assignOps; |
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84 | std::stack< AdapterMap > adapters; |
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85 | DeclarationWithType *retval; |
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86 | bool useRetval; |
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87 | UniqueName tempNamer; |
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88 | }; |
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89 | |
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90 | class Pass2 : public PolyMutator { |
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91 | public: |
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92 | Pass2(); |
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93 | template< typename DeclClass > |
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94 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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95 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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96 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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97 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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98 | virtual TypedefDecl *mutate( TypedefDecl *typedefDecl ); |
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99 | virtual Type *mutate( PointerType *pointerType ); |
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100 | virtual Type *mutate( FunctionType *funcType ); |
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101 | private: |
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102 | void addAdapters( FunctionType *functionType ); |
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103 | |
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104 | std::map< UniqueId, std::string > adapterName; |
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105 | }; |
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106 | |
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107 | class Pass3 : public PolyMutator { |
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108 | public: |
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109 | template< typename DeclClass > |
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110 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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111 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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112 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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113 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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114 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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115 | virtual Statement *mutate( DeclStmt *declStmt ); |
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116 | virtual Type *mutate( PointerType *pointerType ); |
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117 | virtual Type *mutate( FunctionType *funcType ); |
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118 | private: |
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119 | }; |
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120 | |
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121 | } // anonymous namespace |
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122 | |
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123 | void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) { |
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124 | for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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125 | if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) { |
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126 | (*i)->print( os ); |
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127 | os << std::endl; |
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128 | } // if |
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129 | } // for |
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130 | } |
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131 | |
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132 | void box( std::list< Declaration *>& translationUnit ) { |
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133 | Pass1 pass1; |
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134 | Pass2 pass2; |
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135 | Pass3 pass3; |
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136 | mutateAll( translationUnit, pass1 ); |
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137 | mutateAll( translationUnit, pass2 ); |
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138 | mutateAll( translationUnit, pass3 ); |
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139 | } |
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140 | |
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141 | ////////////////////////////////////////// Pass1 //////////////////////////////////////////////////// |
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142 | |
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143 | namespace { |
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144 | std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) { |
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145 | std::stringstream name; |
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146 | |
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147 | // NOTE: this function previously used isPolyObj, which failed to produce |
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148 | // the correct thing in some situations. It's not clear to me why this wasn't working. |
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149 | |
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150 | // if the return type or a parameter type involved polymorphic types, then the adapter will need |
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151 | // to take those polymorphic types as pointers. Therefore, there can be two different functions |
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152 | // with the same mangled name, so we need to further mangle the names. |
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153 | for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) { |
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154 | if ( isPolyVal( (*retval)->get_type(), tyVars ) ) { |
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155 | name << "P"; |
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156 | } else { |
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157 | name << "M"; |
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158 | } |
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159 | } |
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160 | name << "_"; |
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161 | std::list< DeclarationWithType *> ¶mList = function->get_parameters(); |
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162 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
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163 | if ( isPolyVal( (*arg)->get_type(), tyVars ) ) { |
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164 | name << "P"; |
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165 | } else { |
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166 | name << "M"; |
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167 | } |
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168 | } // for |
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169 | return name.str(); |
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170 | } |
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171 | |
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172 | std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) { |
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173 | return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars ); |
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174 | } |
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175 | |
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176 | std::string makeAdapterName( const std::string &mangleName ) { |
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177 | return "_adapter" + mangleName; |
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178 | } |
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179 | |
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180 | Pass1::Pass1() |
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181 | : useRetval( false ), tempNamer( "_temp" ) { |
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182 | adapters.push(AdapterMap()); |
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183 | } |
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184 | |
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185 | // returns true if the given declaration is: (*?=?)(T *, T) for some T (return not checked, but maybe should be) |
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186 | bool checkAssignment( DeclarationWithType *decl, std::string &name ) { |
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187 | if ( decl->get_name() == "?=?" ) { |
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188 | if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) { |
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189 | if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) { |
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190 | if ( funType->get_parameters().size() == 2 ) { |
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191 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
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192 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
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193 | name = typeInst->get_name(); |
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194 | return true; |
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195 | } // if |
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196 | } // if |
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197 | } // if |
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198 | } // if |
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199 | } // if |
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200 | } // if |
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201 | return false; |
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202 | } |
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203 | |
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204 | void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) { |
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205 | // what if a nested function uses an assignment operator? |
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206 | // assignOps.clear(); |
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207 | for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) { |
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208 | for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
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209 | std::string typeName; |
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210 | if ( checkAssignment( *assert, typeName ) ) { |
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211 | assignOps[ typeName ] = *assert; |
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212 | } // if |
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213 | } // for |
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214 | } // for |
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215 | } |
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216 | |
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217 | DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) { |
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218 | if ( functionDecl->get_statements() ) { // empty routine body ? |
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219 | doBeginScope(); |
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220 | TyVarMap oldtyVars = scopeTyVars; |
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221 | std::map< std::string, DeclarationWithType *> oldassignOps = assignOps; |
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222 | DeclarationWithType *oldRetval = retval; |
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223 | bool oldUseRetval = useRetval; |
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224 | |
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225 | // process polymorphic return value |
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226 | retval = 0; |
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227 | std::string typeName; |
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228 | if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) { |
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229 | retval = functionDecl->get_functionType()->get_returnVals().front(); |
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230 | |
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231 | // give names to unnamed return values |
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232 | if ( retval->get_name() == "" ) { |
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233 | retval->set_name( "_retparm" ); |
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234 | retval->set_linkage( LinkageSpec::C ); |
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235 | } // if |
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236 | } // if |
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237 | |
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238 | FunctionType *functionType = functionDecl->get_functionType(); |
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239 | makeTyVarMap( functionDecl->get_functionType(), scopeTyVars ); |
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240 | findAssignOps( functionDecl->get_functionType()->get_forall() ); |
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241 | |
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242 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
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243 | std::list< FunctionType *> functions; |
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244 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
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245 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
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246 | findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter ); |
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247 | } // for |
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248 | } // for |
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249 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
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250 | findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter ); |
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251 | } // for |
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252 | AdapterMap & adapters = Pass1::adapters.top(); |
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253 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
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254 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
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255 | if ( adapters.find( mangleName ) == adapters.end() ) { |
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256 | std::string adapterName = makeAdapterName( mangleName ); |
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257 | adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) ); |
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258 | } // if |
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259 | } // for |
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260 | |
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261 | functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) ); |
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262 | |
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263 | scopeTyVars = oldtyVars; |
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264 | assignOps = oldassignOps; |
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265 | // std::cerr << "end FunctionDecl: "; |
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266 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
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267 | // std::cerr << i->first << " "; |
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268 | // } |
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269 | // std::cerr << "\n"; |
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270 | retval = oldRetval; |
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271 | useRetval = oldUseRetval; |
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272 | doEndScope(); |
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273 | } // if |
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274 | return functionDecl; |
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275 | } |
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276 | |
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277 | TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) { |
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278 | /// std::cerr << "add " << typeDecl->get_name() << "\n"; |
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279 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
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280 | return Mutator::mutate( typeDecl ); |
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281 | } |
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282 | |
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283 | Expression *Pass1::mutate( CommaExpr *commaExpr ) { |
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284 | bool oldUseRetval = useRetval; |
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285 | useRetval = false; |
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286 | commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) ); |
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287 | useRetval = oldUseRetval; |
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288 | commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) ); |
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289 | return commaExpr; |
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290 | } |
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291 | |
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292 | Expression *Pass1::mutate( ConditionalExpr *condExpr ) { |
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293 | bool oldUseRetval = useRetval; |
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294 | useRetval = false; |
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295 | condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) ); |
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296 | useRetval = oldUseRetval; |
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297 | condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) ); |
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298 | condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) ); |
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299 | return condExpr; |
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300 | |
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301 | } |
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302 | |
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303 | void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
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304 | for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) { |
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305 | ResolvExpr::EqvClass eqvClass; |
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306 | assert( env ); |
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307 | if ( tyParm->second == TypeDecl::Any ) { |
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308 | Type *concrete = env->lookup( tyParm->first ); |
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309 | if ( concrete ) { |
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310 | arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) ); |
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311 | arg++; |
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312 | } else { |
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313 | throw SemanticError( "unbound type variable in application ", appExpr ); |
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314 | } // if |
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315 | } // if |
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316 | } // for |
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317 | } |
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318 | |
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319 | ObjectDecl *Pass1::makeTemporary( Type *type ) { |
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320 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 ); |
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321 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
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322 | return newObj; |
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323 | } |
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324 | |
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325 | TypeInstType *isPolyType( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
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326 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
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327 | if ( env ) { |
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328 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
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329 | return isPolyType( newType, env, tyVars ); |
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330 | } // if |
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331 | } // if |
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332 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { |
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333 | return typeInst; |
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334 | } else { |
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335 | return 0; |
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336 | } // if |
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337 | } else { |
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338 | return 0; |
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339 | } // if |
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340 | } |
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341 | |
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342 | Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) { |
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343 | if ( useRetval ) { |
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344 | assert( retval ); |
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345 | arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) ); |
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346 | arg++; |
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347 | } else { |
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348 | ObjectDecl *newObj = makeTemporary( retType->clone() ); |
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349 | Expression *paramExpr = new VariableExpr( newObj ); |
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350 | if ( ! isPolyType( newObj->get_type(), env, scopeTyVars ) ) { |
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351 | paramExpr = new AddressExpr( paramExpr ); |
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352 | } // if |
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353 | arg = appExpr->get_args().insert( arg, paramExpr ); |
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354 | arg++; |
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355 | /// stmtsToAdd.push_back( new ExprStmt( noLabels, appExpr ) ); |
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356 | CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) ); |
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357 | commaExpr->set_env( appExpr->get_env() ); |
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358 | appExpr->set_env( 0 ); |
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359 | return commaExpr; |
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360 | } // if |
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361 | return appExpr; |
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362 | } |
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363 | |
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364 | Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) { |
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365 | ResolvExpr::EqvClass eqvClass; |
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366 | assert( env ); |
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367 | Type *concrete = env->lookup( typeName ); |
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368 | if ( concrete == 0 ) { |
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369 | throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr ); |
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370 | } // if |
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371 | return addRetParam( appExpr, function, concrete, arg ); |
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372 | } |
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373 | |
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374 | Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
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375 | Expression *ret = appExpr; |
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376 | if ( ! function->get_returnVals().empty() && isPolyVal( function->get_returnVals().front()->get_type(), tyVars ) ) { |
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377 | ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg ); |
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378 | } // if |
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379 | std::string mangleName = mangleAdapterName( function, tyVars ); |
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380 | std::string adapterName = makeAdapterName( mangleName ); |
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381 | |
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382 | appExpr->get_args().push_front( appExpr->get_function() ); |
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383 | appExpr->set_function( new NameExpr( adapterName ) ); |
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384 | |
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385 | return ret; |
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386 | } |
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387 | |
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388 | void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) { |
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389 | assert( ! arg->get_results().empty() ); |
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390 | /// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) { |
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391 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param ); |
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392 | if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) { |
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393 | if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) { |
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394 | // if the argument's type is a type parameter, we don't need to box again! |
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395 | return; |
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396 | } else if ( arg->get_results().front()->get_isLvalue() ) { |
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397 | // VariableExpr and MemberExpr are lvalues |
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398 | arg = new AddressExpr( arg ); |
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399 | } else { |
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400 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 ); |
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401 | newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right??? |
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402 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
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403 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
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404 | assign->get_args().push_back( new VariableExpr( newObj ) ); |
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405 | assign->get_args().push_back( arg ); |
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406 | stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) ); |
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407 | arg = new AddressExpr( new VariableExpr( newObj ) ); |
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408 | } // if |
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409 | } // if |
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410 | /// } |
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411 | } |
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412 | |
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413 | void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) { |
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414 | Type *newType = formal->clone(); |
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415 | std::list< FunctionType *> functions; |
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416 | // instead of functions needing adapters, this really ought to look for |
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417 | // any function mentioning a polymorphic type |
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418 | findAndReplaceFunction( newType, functions, tyVars, needsAdapter ); |
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419 | if ( ! functions.empty() ) { |
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420 | actual = new CastExpr( actual, newType ); |
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421 | } else { |
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422 | delete newType; |
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423 | } // if |
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424 | } |
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425 | |
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426 | void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
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427 | /// std::cout << "function is "; |
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428 | /// function->print( std::cout ); |
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429 | for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) { |
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430 | /// std::cout << "parameter is "; |
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431 | /// (*param)->print( std::fcout ); |
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432 | /// std::cout << std::endl << "argument is "; |
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433 | /// (*arg)->print( std::cout ); |
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434 | assert( arg != appExpr->get_args().end() ); |
---|
435 | addCast( *arg, (*param)->get_type(), exprTyVars ); |
---|
436 | boxParam( (*param)->get_type(), *arg, exprTyVars ); |
---|
437 | } // for |
---|
438 | } |
---|
439 | |
---|
440 | void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
441 | std::list< Expression *>::iterator cur = arg; |
---|
442 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
443 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
444 | InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() ); |
---|
445 | assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" ); |
---|
446 | Expression *newExpr = inferParam->second.expr->clone(); |
---|
447 | addCast( newExpr, (*assert)->get_type(), tyVars ); |
---|
448 | boxParam( (*assert)->get_type(), newExpr, tyVars ); |
---|
449 | appExpr->get_args().insert( cur, newExpr ); |
---|
450 | } // for |
---|
451 | } // for |
---|
452 | } |
---|
453 | |
---|
454 | void makeRetParm( FunctionType *funcType ) { |
---|
455 | DeclarationWithType *retParm = funcType->get_returnVals().front(); |
---|
456 | |
---|
457 | // make a new parameter that is a pointer to the type of the old return value |
---|
458 | retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) ); |
---|
459 | funcType->get_parameters().push_front( retParm ); |
---|
460 | |
---|
461 | // we don't need the return value any more |
---|
462 | funcType->get_returnVals().clear(); |
---|
463 | } |
---|
464 | |
---|
465 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) { |
---|
466 | // actually make the adapter type |
---|
467 | FunctionType *adapter = adaptee->clone(); |
---|
468 | if ( ! adapter->get_returnVals().empty() && isPolyVal( adapter->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
469 | makeRetParm( adapter ); |
---|
470 | } // if |
---|
471 | adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) ); |
---|
472 | return adapter; |
---|
473 | } |
---|
474 | |
---|
475 | Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) { |
---|
476 | assert( param ); |
---|
477 | assert( arg ); |
---|
478 | /// std::cout << "arg type is "; |
---|
479 | /// arg->get_type()->print( std::cout ); |
---|
480 | /// std::cout << "param type is "; |
---|
481 | /// param->get_type()->print( std::cout ); |
---|
482 | /// std::cout << " tyVars are: "; |
---|
483 | /// printTyVarMap( std::cout, tyVars ); |
---|
484 | if ( isPolyVal( realParam->get_type(), tyVars ) ) { |
---|
485 | /// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) { |
---|
486 | /// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() ); |
---|
487 | /// } else { |
---|
488 | if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) { |
---|
489 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
490 | deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) ); |
---|
491 | deref->get_results().push_back( arg->get_type()->clone() ); |
---|
492 | return deref; |
---|
493 | } // if |
---|
494 | /// } |
---|
495 | } // if |
---|
496 | return new VariableExpr( param ); |
---|
497 | } |
---|
498 | |
---|
499 | 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 ) { |
---|
500 | UniqueName paramNamer( "_p" ); |
---|
501 | for ( ; param != paramEnd; ++param, ++arg, ++realParam ) { |
---|
502 | if ( (*param)->get_name() == "" ) { |
---|
503 | (*param)->set_name( paramNamer.newName() ); |
---|
504 | (*param)->set_linkage( LinkageSpec::C ); |
---|
505 | } // if |
---|
506 | adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) ); |
---|
507 | } // for |
---|
508 | } |
---|
509 | |
---|
510 | |
---|
511 | |
---|
512 | FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) { |
---|
513 | FunctionType *adapterType = makeAdapterType( adaptee, tyVars ); |
---|
514 | adapterType = ScrubTyVars::scrub( adapterType, tyVars ); |
---|
515 | DeclarationWithType *adapteeDecl = adapterType->get_parameters().front(); |
---|
516 | adapteeDecl->set_name( "_adaptee" ); |
---|
517 | ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) ); |
---|
518 | Statement *bodyStmt; |
---|
519 | |
---|
520 | std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin(); |
---|
521 | std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin(); |
---|
522 | std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin(); |
---|
523 | for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) { |
---|
524 | assert( tyArg != realType->get_forall().end() ); |
---|
525 | std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin(); |
---|
526 | std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin(); |
---|
527 | std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin(); |
---|
528 | for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) { |
---|
529 | assert( assertArg != (*tyArg)->get_assertions().end() ); |
---|
530 | adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) ); |
---|
531 | } // for |
---|
532 | } // for |
---|
533 | |
---|
534 | std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin(); |
---|
535 | std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin(); |
---|
536 | std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin(); |
---|
537 | param++; // skip adaptee parameter |
---|
538 | if ( realType->get_returnVals().empty() ) { |
---|
539 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
540 | bodyStmt = new ExprStmt( noLabels, adapteeApp ); |
---|
541 | } else if ( isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
542 | if ( (*param)->get_name() == "" ) { |
---|
543 | (*param)->set_name( "_ret" ); |
---|
544 | (*param)->set_linkage( LinkageSpec::C ); |
---|
545 | } // if |
---|
546 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
547 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
548 | deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) ); |
---|
549 | assign->get_args().push_back( deref ); |
---|
550 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
551 | assign->get_args().push_back( adapteeApp ); |
---|
552 | bodyStmt = new ExprStmt( noLabels, assign ); |
---|
553 | } else { |
---|
554 | // adapter for a function that returns a monomorphic value |
---|
555 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
556 | bodyStmt = new ReturnStmt( noLabels, adapteeApp ); |
---|
557 | } // if |
---|
558 | CompoundStmt *adapterBody = new CompoundStmt( noLabels ); |
---|
559 | adapterBody->get_kids().push_back( bodyStmt ); |
---|
560 | std::string adapterName = makeAdapterName( mangleName ); |
---|
561 | return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false ); |
---|
562 | } |
---|
563 | |
---|
564 | void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) { |
---|
565 | // collect a list of function types passed as parameters or implicit parameters (assertions) |
---|
566 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
567 | std::list< FunctionType *> functions; |
---|
568 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
569 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
570 | findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
571 | } // for |
---|
572 | } // for |
---|
573 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
574 | findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
575 | } // for |
---|
576 | |
---|
577 | // parameter function types for which an appropriate adapter has been generated. we cannot use the types |
---|
578 | // after applying substitutions, since two different parameter types may be unified to the same type |
---|
579 | std::set< std::string > adaptersDone; |
---|
580 | |
---|
581 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
582 | FunctionType *originalFunction = (*funType)->clone(); |
---|
583 | FunctionType *realFunction = (*funType)->clone(); |
---|
584 | std::string mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
585 | |
---|
586 | // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this |
---|
587 | // pre-substitution parameter function type. |
---|
588 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
589 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
590 | |
---|
591 | // apply substitution to type variables to figure out what the adapter's type should look like |
---|
592 | assert( env ); |
---|
593 | env->apply( realFunction ); |
---|
594 | mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
595 | mangleName += makePolyMonoSuffix( originalFunction, exprTyVars ); |
---|
596 | |
---|
597 | AdapterMap & adapters = Pass1::adapters.top(); |
---|
598 | AdapterMap::iterator adapter = adapters.find( mangleName ); |
---|
599 | if ( adapter == adapters.end() ) { |
---|
600 | // adapter has not been created yet in the current scope, so define it |
---|
601 | FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars ); |
---|
602 | adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) ); |
---|
603 | stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) ); |
---|
604 | } // if |
---|
605 | assert( adapter != adapters.end() ); |
---|
606 | |
---|
607 | // add the appropriate adapter as a parameter |
---|
608 | appExpr->get_args().push_front( new VariableExpr( adapter->second ) ); |
---|
609 | } // if |
---|
610 | } // for |
---|
611 | } // passAdapters |
---|
612 | |
---|
613 | TypeInstType *isPolyPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
---|
614 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
---|
615 | return isPolyType( ptr->get_base(), env, tyVars ); |
---|
616 | } else if ( env ) { |
---|
617 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
---|
618 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
---|
619 | return isPolyPtr( newType, env, tyVars ); |
---|
620 | } // if |
---|
621 | } // if |
---|
622 | } // if |
---|
623 | return 0; |
---|
624 | } |
---|
625 | |
---|
626 | TypeInstType *isPolyPtrPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) { |
---|
627 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
---|
628 | return isPolyPtr( ptr->get_base(), env, tyVars ); |
---|
629 | } else if ( env ) { |
---|
630 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) { |
---|
631 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
---|
632 | return isPolyPtrPtr( newType, env, tyVars ); |
---|
633 | } // if |
---|
634 | } // if |
---|
635 | } // if |
---|
636 | return 0; |
---|
637 | } |
---|
638 | |
---|
639 | Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, std::string polyName, bool isIncr ) { |
---|
640 | NameExpr *opExpr; |
---|
641 | if ( isIncr ) { |
---|
642 | opExpr = new NameExpr( "?+=?" ); |
---|
643 | } else { |
---|
644 | opExpr = new NameExpr( "?-=?" ); |
---|
645 | } // if |
---|
646 | UntypedExpr *addAssign = new UntypedExpr( opExpr ); |
---|
647 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
648 | addAssign->get_args().push_back( address->get_arg() ); |
---|
649 | } else { |
---|
650 | addAssign->get_args().push_back( appExpr->get_args().front() ); |
---|
651 | } // if |
---|
652 | addAssign->get_args().push_back( new NameExpr( polyName ) ); |
---|
653 | addAssign->get_results().front() = appExpr->get_results().front()->clone(); |
---|
654 | if ( appExpr->get_env() ) { |
---|
655 | addAssign->set_env( appExpr->get_env() ); |
---|
656 | appExpr->set_env( 0 ); |
---|
657 | } // if |
---|
658 | appExpr->get_args().clear(); |
---|
659 | delete appExpr; |
---|
660 | return addAssign; |
---|
661 | } |
---|
662 | |
---|
663 | Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) { |
---|
664 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) { |
---|
665 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) { |
---|
666 | if ( varExpr->get_var()->get_name() == "?[?]" ) { |
---|
667 | assert( ! appExpr->get_results().empty() ); |
---|
668 | assert( appExpr->get_args().size() == 2 ); |
---|
669 | TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars ); |
---|
670 | TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars ); |
---|
671 | assert( ! typeInst1 || ! typeInst2 ); // the arguments cannot both be polymorphic pointers |
---|
672 | UntypedExpr *ret = 0; |
---|
673 | if ( typeInst1 || typeInst2 ) { // one of the arguments is a polymorphic pointer |
---|
674 | ret = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
675 | } // if |
---|
676 | if ( typeInst1 ) { |
---|
677 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
678 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
679 | multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
680 | ret->get_args().push_back( appExpr->get_args().front() ); |
---|
681 | ret->get_args().push_back( multiply ); |
---|
682 | } else if ( typeInst2 ) { |
---|
683 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
684 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
685 | multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) ); |
---|
686 | ret->get_args().push_back( multiply ); |
---|
687 | ret->get_args().push_back( appExpr->get_args().back() ); |
---|
688 | } // if |
---|
689 | if ( typeInst1 || typeInst2 ) { |
---|
690 | ret->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
691 | if ( appExpr->get_env() ) { |
---|
692 | ret->set_env( appExpr->get_env() ); |
---|
693 | appExpr->set_env( 0 ); |
---|
694 | } // if |
---|
695 | appExpr->get_args().clear(); |
---|
696 | delete appExpr; |
---|
697 | return ret; |
---|
698 | } // if |
---|
699 | } else if ( varExpr->get_var()->get_name() == "*?" ) { |
---|
700 | assert( ! appExpr->get_results().empty() ); |
---|
701 | assert( ! appExpr->get_args().empty() ); |
---|
702 | if ( isPolyType( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
703 | Expression *ret = appExpr->get_args().front(); |
---|
704 | delete ret->get_results().front(); |
---|
705 | ret->get_results().front() = appExpr->get_results().front()->clone(); |
---|
706 | if ( appExpr->get_env() ) { |
---|
707 | ret->set_env( appExpr->get_env() ); |
---|
708 | appExpr->set_env( 0 ); |
---|
709 | } // if |
---|
710 | appExpr->get_args().clear(); |
---|
711 | delete appExpr; |
---|
712 | return ret; |
---|
713 | } // if |
---|
714 | } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) { |
---|
715 | assert( ! appExpr->get_results().empty() ); |
---|
716 | assert( appExpr->get_args().size() == 1 ); |
---|
717 | if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
718 | Type *tempType = appExpr->get_results().front()->clone(); |
---|
719 | if ( env ) { |
---|
720 | env->apply( tempType ); |
---|
721 | } // if |
---|
722 | ObjectDecl *newObj = makeTemporary( tempType ); |
---|
723 | VariableExpr *tempExpr = new VariableExpr( newObj ); |
---|
724 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
725 | assignExpr->get_args().push_back( tempExpr->clone() ); |
---|
726 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
727 | assignExpr->get_args().push_back( address->get_arg()->clone() ); |
---|
728 | } else { |
---|
729 | assignExpr->get_args().push_back( appExpr->get_args().front()->clone() ); |
---|
730 | } // if |
---|
731 | CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "?++" ) ); |
---|
732 | return new CommaExpr( firstComma, tempExpr ); |
---|
733 | } // if |
---|
734 | } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) { |
---|
735 | assert( ! appExpr->get_results().empty() ); |
---|
736 | assert( appExpr->get_args().size() == 1 ); |
---|
737 | if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) { |
---|
738 | return makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "++?" ); |
---|
739 | } // if |
---|
740 | } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) { |
---|
741 | assert( ! appExpr->get_results().empty() ); |
---|
742 | assert( appExpr->get_args().size() == 2 ); |
---|
743 | TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars ); |
---|
744 | TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars ); |
---|
745 | if ( typeInst1 && typeInst2 ) { |
---|
746 | UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) ); |
---|
747 | divide->get_args().push_back( appExpr ); |
---|
748 | divide->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
749 | divide->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
750 | if ( appExpr->get_env() ) { |
---|
751 | divide->set_env( appExpr->get_env() ); |
---|
752 | appExpr->set_env( 0 ); |
---|
753 | } // if |
---|
754 | return divide; |
---|
755 | } else if ( typeInst1 ) { |
---|
756 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
757 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
758 | multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) ); |
---|
759 | appExpr->get_args().back() = multiply; |
---|
760 | } else if ( typeInst2 ) { |
---|
761 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
762 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
763 | multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) ); |
---|
764 | appExpr->get_args().front() = multiply; |
---|
765 | } // if |
---|
766 | } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) { |
---|
767 | assert( ! appExpr->get_results().empty() ); |
---|
768 | assert( appExpr->get_args().size() == 2 ); |
---|
769 | TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ); |
---|
770 | if ( typeInst ) { |
---|
771 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
772 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
773 | multiply->get_args().push_back( new NameExpr( typeInst->get_name() ) ); |
---|
774 | appExpr->get_args().back() = multiply; |
---|
775 | } // if |
---|
776 | } // if |
---|
777 | return appExpr; |
---|
778 | } // if |
---|
779 | } // if |
---|
780 | return 0; |
---|
781 | } |
---|
782 | |
---|
783 | Expression *Pass1::mutate( ApplicationExpr *appExpr ) { |
---|
784 | // std::cerr << "mutate appExpr: "; |
---|
785 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
786 | // std::cerr << i->first << " "; |
---|
787 | // } |
---|
788 | // std::cerr << "\n"; |
---|
789 | bool oldUseRetval = useRetval; |
---|
790 | useRetval = false; |
---|
791 | appExpr->get_function()->acceptMutator( *this ); |
---|
792 | mutateAll( appExpr->get_args(), *this ); |
---|
793 | useRetval = oldUseRetval; |
---|
794 | |
---|
795 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
796 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
797 | assert( pointer ); |
---|
798 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
799 | assert( function ); |
---|
800 | |
---|
801 | if ( Expression *newExpr = handleIntrinsics( appExpr ) ) { |
---|
802 | return newExpr; |
---|
803 | } // if |
---|
804 | |
---|
805 | Expression *ret = appExpr; |
---|
806 | |
---|
807 | std::list< Expression *>::iterator arg = appExpr->get_args().begin(); |
---|
808 | std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin(); |
---|
809 | |
---|
810 | std::string typeName; |
---|
811 | if ( isPolyRet( function, typeName ) ) { |
---|
812 | ret = addPolyRetParam( appExpr, function, typeName, arg ); |
---|
813 | } else if ( needsAdapter( function, scopeTyVars ) ) { |
---|
814 | // std::cerr << "needs adapter: "; |
---|
815 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
816 | // std::cerr << i->first << " "; |
---|
817 | // } |
---|
818 | // std::cerr << "\n"; |
---|
819 | // change the application so it calls the adapter rather than the passed function |
---|
820 | ret = applyAdapter( appExpr, function, arg, scopeTyVars ); |
---|
821 | } // if |
---|
822 | arg = appExpr->get_args().begin(); |
---|
823 | |
---|
824 | TyVarMap exprTyVars; |
---|
825 | makeTyVarMap( function, exprTyVars ); |
---|
826 | |
---|
827 | passTypeVars( appExpr, arg, exprTyVars ); |
---|
828 | addInferredParams( appExpr, function, arg, exprTyVars ); |
---|
829 | |
---|
830 | arg = paramBegin; |
---|
831 | |
---|
832 | boxParams( appExpr, function, arg, exprTyVars ); |
---|
833 | |
---|
834 | passAdapters( appExpr, function, exprTyVars ); |
---|
835 | |
---|
836 | return ret; |
---|
837 | } |
---|
838 | |
---|
839 | Expression *Pass1::mutate( UntypedExpr *expr ) { |
---|
840 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), env, scopeTyVars ) ) { |
---|
841 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
842 | if ( name->get_name() == "*?" ) { |
---|
843 | Expression *ret = expr->get_args().front(); |
---|
844 | expr->get_args().clear(); |
---|
845 | delete expr; |
---|
846 | return ret->acceptMutator( *this ); |
---|
847 | } // if |
---|
848 | } // if |
---|
849 | } // if |
---|
850 | return PolyMutator::mutate( expr ); |
---|
851 | } |
---|
852 | |
---|
853 | Expression *Pass1::mutate( AddressExpr *addrExpr ) { |
---|
854 | assert( ! addrExpr->get_arg()->get_results().empty() ); |
---|
855 | addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) ); |
---|
856 | if ( isPolyType( addrExpr->get_arg()->get_results().front(), env, scopeTyVars ) ) { |
---|
857 | Expression *ret = addrExpr->get_arg(); |
---|
858 | delete ret->get_results().front(); |
---|
859 | ret->get_results().front() = addrExpr->get_results().front()->clone(); |
---|
860 | addrExpr->set_arg( 0 ); |
---|
861 | delete addrExpr; |
---|
862 | return ret; |
---|
863 | } else { |
---|
864 | return addrExpr; |
---|
865 | } // if |
---|
866 | } |
---|
867 | |
---|
868 | Statement * Pass1::mutate(ReturnStmt *retStmt) { |
---|
869 | // by this point, a cast expr on a polymorphic return value is redundant |
---|
870 | while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( retStmt->get_expr() ) ) { |
---|
871 | retStmt->set_expr( castExpr->get_arg() ); |
---|
872 | retStmt->get_expr()->set_env( castExpr->get_env() ); |
---|
873 | castExpr->set_env( 0 ); |
---|
874 | castExpr->set_arg( 0 ); |
---|
875 | delete castExpr; |
---|
876 | } |
---|
877 | if ( retval && retStmt->get_expr() ) { |
---|
878 | assert( ! retStmt->get_expr()->get_results().empty() ); |
---|
879 | if ( retStmt->get_expr()->get_results().front()->get_isLvalue() ) { |
---|
880 | /// retStmt->set_expr( mutateExpression( retStmt->get_expr() ) ); |
---|
881 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() ); |
---|
882 | assert( typeInst ); |
---|
883 | std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() ); |
---|
884 | if ( assignIter == assignOps.end() ) { |
---|
885 | throw SemanticError( "Attempt to return dtype or ftype object in ", retStmt->get_expr() ); |
---|
886 | } // if |
---|
887 | ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) ); |
---|
888 | Expression *retParm = new NameExpr( retval->get_name() ); |
---|
889 | retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) ); |
---|
890 | assignExpr->get_args().push_back( retParm ); |
---|
891 | assignExpr->get_args().push_back( retStmt->get_expr() ); |
---|
892 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) ); |
---|
893 | } else { |
---|
894 | useRetval = true; |
---|
895 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( retStmt->get_expr() ) ) ); |
---|
896 | useRetval = false; |
---|
897 | } // if |
---|
898 | retStmt->set_expr( 0 ); |
---|
899 | } else { |
---|
900 | retStmt->set_expr( mutateExpression( retStmt->get_expr() ) ); |
---|
901 | } // if |
---|
902 | return retStmt; |
---|
903 | } |
---|
904 | |
---|
905 | Type * Pass1::mutate( PointerType *pointerType ) { |
---|
906 | TyVarMap oldtyVars = scopeTyVars; |
---|
907 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
908 | |
---|
909 | Type *ret = Mutator::mutate( pointerType ); |
---|
910 | |
---|
911 | scopeTyVars = oldtyVars; |
---|
912 | return ret; |
---|
913 | } |
---|
914 | |
---|
915 | Type * Pass1::mutate( FunctionType *functionType ) { |
---|
916 | TyVarMap oldtyVars = scopeTyVars; |
---|
917 | makeTyVarMap( functionType, scopeTyVars ); |
---|
918 | |
---|
919 | Type *ret = Mutator::mutate( functionType ); |
---|
920 | |
---|
921 | scopeTyVars = oldtyVars; |
---|
922 | return ret; |
---|
923 | } |
---|
924 | |
---|
925 | void Pass1::doBeginScope() { |
---|
926 | // push a copy of the current map |
---|
927 | adapters.push(adapters.top()); |
---|
928 | } |
---|
929 | |
---|
930 | void Pass1::doEndScope() { |
---|
931 | adapters.pop(); |
---|
932 | } |
---|
933 | |
---|
934 | ////////////////////////////////////////// Pass2 //////////////////////////////////////////////////// |
---|
935 | |
---|
936 | Pass2::Pass2() {} |
---|
937 | |
---|
938 | void Pass2::addAdapters( FunctionType *functionType ) { |
---|
939 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
940 | std::list< FunctionType *> functions; |
---|
941 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
942 | Type *orig = (*arg)->get_type(); |
---|
943 | findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter ); |
---|
944 | (*arg)->set_type( orig ); |
---|
945 | } |
---|
946 | std::set< std::string > adaptersDone; |
---|
947 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
948 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
949 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
950 | std::string adapterName = makeAdapterName( mangleName ); |
---|
951 | paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ); |
---|
952 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
953 | } |
---|
954 | } |
---|
955 | /// deleteAll( functions ); |
---|
956 | } |
---|
957 | |
---|
958 | template< typename DeclClass > |
---|
959 | DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) { |
---|
960 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
961 | |
---|
962 | return ret; |
---|
963 | } |
---|
964 | |
---|
965 | DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) { |
---|
966 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
967 | } |
---|
968 | |
---|
969 | ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) { |
---|
970 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
971 | } |
---|
972 | |
---|
973 | TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) { |
---|
974 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
975 | if ( typeDecl->get_base() ) { |
---|
976 | return handleDecl( typeDecl, typeDecl->get_base() ); |
---|
977 | } else { |
---|
978 | return Mutator::mutate( typeDecl ); |
---|
979 | } |
---|
980 | } |
---|
981 | |
---|
982 | TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) { |
---|
983 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
984 | } |
---|
985 | |
---|
986 | Type * Pass2::mutate( PointerType *pointerType ) { |
---|
987 | TyVarMap oldtyVars = scopeTyVars; |
---|
988 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
989 | |
---|
990 | Type *ret = Mutator::mutate( pointerType ); |
---|
991 | |
---|
992 | scopeTyVars = oldtyVars; |
---|
993 | return ret; |
---|
994 | } |
---|
995 | |
---|
996 | Type *Pass2::mutate( FunctionType *funcType ) { |
---|
997 | TyVarMap oldtyVars = scopeTyVars; |
---|
998 | makeTyVarMap( funcType, scopeTyVars ); |
---|
999 | |
---|
1000 | std::string typeName; |
---|
1001 | if ( isPolyRet( funcType, typeName ) ) { |
---|
1002 | DeclarationWithType *ret = funcType->get_returnVals().front(); |
---|
1003 | ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) ); |
---|
1004 | funcType->get_parameters().push_front( ret ); |
---|
1005 | funcType->get_returnVals().pop_front(); |
---|
1006 | } |
---|
1007 | |
---|
1008 | std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin(); |
---|
1009 | std::list< DeclarationWithType *> inferredParams; |
---|
1010 | ObjectDecl *newObj = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 ); |
---|
1011 | /// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ); |
---|
1012 | for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) { |
---|
1013 | ObjectDecl *thisParm; |
---|
1014 | // add all size parameters to parameter list |
---|
1015 | if ( (*tyParm)->get_kind() == TypeDecl::Any ) { |
---|
1016 | thisParm = newObj->clone(); |
---|
1017 | thisParm->set_name( (*tyParm)->get_name() ); |
---|
1018 | last = funcType->get_parameters().insert( last, thisParm ); |
---|
1019 | ++last; |
---|
1020 | } |
---|
1021 | // move all assertions into parameter list |
---|
1022 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) { |
---|
1023 | /// *assert = (*assert)->acceptMutator( *this ); |
---|
1024 | inferredParams.push_back( *assert ); |
---|
1025 | } |
---|
1026 | (*tyParm)->get_assertions().clear(); |
---|
1027 | } |
---|
1028 | delete newObj; |
---|
1029 | funcType->get_parameters().splice( last, inferredParams ); |
---|
1030 | addAdapters( funcType ); |
---|
1031 | mutateAll( funcType->get_returnVals(), *this ); |
---|
1032 | mutateAll( funcType->get_parameters(), *this ); |
---|
1033 | |
---|
1034 | scopeTyVars = oldtyVars; |
---|
1035 | return funcType; |
---|
1036 | } |
---|
1037 | |
---|
1038 | ////////////////////////////////////////// Pass3 //////////////////////////////////////////////////// |
---|
1039 | |
---|
1040 | template< typename DeclClass > |
---|
1041 | DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) { |
---|
1042 | TyVarMap oldtyVars = scopeTyVars; |
---|
1043 | makeTyVarMap( type, scopeTyVars ); |
---|
1044 | |
---|
1045 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
1046 | ScrubTyVars::scrub( decl, scopeTyVars ); |
---|
1047 | |
---|
1048 | scopeTyVars = oldtyVars; |
---|
1049 | return ret; |
---|
1050 | } |
---|
1051 | |
---|
1052 | ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) { |
---|
1053 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
1054 | } |
---|
1055 | |
---|
1056 | DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) { |
---|
1057 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
1058 | } |
---|
1059 | |
---|
1060 | TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) { |
---|
1061 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
1062 | } |
---|
1063 | |
---|
1064 | TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) { |
---|
1065 | /// Initializer *init = 0; |
---|
1066 | /// std::list< Expression *> designators; |
---|
1067 | /// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1068 | /// if ( typeDecl->get_base() ) { |
---|
1069 | /// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators ); |
---|
1070 | /// } |
---|
1071 | /// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init ); |
---|
1072 | |
---|
1073 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1074 | return Mutator::mutate( typeDecl ); |
---|
1075 | } |
---|
1076 | |
---|
1077 | Type * Pass3::mutate( PointerType *pointerType ) { |
---|
1078 | TyVarMap oldtyVars = scopeTyVars; |
---|
1079 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1080 | |
---|
1081 | Type *ret = Mutator::mutate( pointerType ); |
---|
1082 | |
---|
1083 | scopeTyVars = oldtyVars; |
---|
1084 | return ret; |
---|
1085 | } |
---|
1086 | |
---|
1087 | Type * Pass3::mutate( FunctionType *functionType ) { |
---|
1088 | TyVarMap oldtyVars = scopeTyVars; |
---|
1089 | makeTyVarMap( functionType, scopeTyVars ); |
---|
1090 | |
---|
1091 | Type *ret = Mutator::mutate( functionType ); |
---|
1092 | |
---|
1093 | scopeTyVars = oldtyVars; |
---|
1094 | return ret; |
---|
1095 | } |
---|
1096 | |
---|
1097 | Statement *Pass3::mutate( DeclStmt *declStmt ) { |
---|
1098 | if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) { |
---|
1099 | if ( isPolyVal( objectDecl->get_type(), scopeTyVars ) ) { |
---|
1100 | // change initialization of a polymorphic value object |
---|
1101 | // to allocate storage with alloca |
---|
1102 | TypeInstType *typeInst = dynamic_cast< TypeInstType *>( objectDecl->get_type() ); |
---|
1103 | assert( typeInst ); |
---|
1104 | UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) ); |
---|
1105 | alloc->get_args().push_back( new NameExpr( typeInst->get_name() ) ); |
---|
1106 | |
---|
1107 | delete objectDecl->get_init(); |
---|
1108 | |
---|
1109 | std::list<Expression*> designators; |
---|
1110 | objectDecl->set_init( new SingleInit( alloc, designators ) ); |
---|
1111 | } |
---|
1112 | } |
---|
1113 | return Mutator::mutate( declStmt ); |
---|
1114 | } |
---|
1115 | } // anonymous namespace |
---|
1116 | } // namespace GenPoly |
---|
1117 | |
---|
1118 | // Local Variables: // |
---|
1119 | // tab-width: 4 // |
---|
1120 | // mode: c++ // |
---|
1121 | // compile-command: "make install" // |
---|
1122 | // End: // |
---|