[51b7345] | 1 | /* |
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| 2 | * This file is part of the Cforall project |
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| 3 | * |
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| 4 | * $Id: Validate.cc,v 1.22 2005/08/29 20:14:18 rcbilson Exp $ |
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| 5 | * |
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| 6 | */ |
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| 7 | |
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| 8 | /* |
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| 9 | The "validate" phase of translation is used to take a syntax tree and convert it into a |
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| 10 | standard form that aims to be as regular in structure as possible. Some assumptions can be |
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| 11 | made regarding the state of the tree after this pass is complete, including: |
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| 12 | |
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| 13 | - No nested structure or union definitions; any in the input are "hoisted" to the level of |
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| 14 | the containing struct or union. |
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| 15 | |
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| 16 | - All enumeration constants have type EnumInstType. |
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| 17 | |
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| 18 | - The type "void" never occurs in lists of function parameter or return types; neither do |
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| 19 | tuple types. A function taking no arguments has no argument types, and tuples are flattened. |
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| 20 | |
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| 21 | - No context instances exist; they are all replaced by the set of declarations signified by |
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| 22 | the context, instantiated by the particular set of type arguments. |
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| 23 | |
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| 24 | - Every declaration is assigned a unique id. |
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| 25 | |
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| 26 | - No typedef declarations or instances exist; the actual type is substituted for each instance. |
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| 27 | |
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| 28 | - Each type, struct, and union definition is followed by an appropriate assignment operator. |
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| 29 | |
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| 30 | - Each use of a struct or union is connected to a complete definition of that struct or union, |
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| 31 | even if that definition occurs later in the input. |
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| 32 | */ |
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| 33 | |
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| 34 | #include <list> |
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| 35 | #include <iterator> |
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| 36 | #include "Validate.h" |
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| 37 | #include "SynTree/Visitor.h" |
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| 38 | #include "SynTree/Mutator.h" |
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| 39 | #include "SynTree/Type.h" |
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| 40 | #include "SynTree/Statement.h" |
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| 41 | #include "Indexer.h" |
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| 42 | #include "SynTree/TypeSubstitution.h" |
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| 43 | #include "FixFunction.h" |
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| 44 | #include "ImplementationType.h" |
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| 45 | #include "utility.h" |
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| 46 | #include "UniqueName.h" |
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| 47 | #include "AddVisit.h" |
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| 48 | |
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| 49 | |
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| 50 | #define debugPrint(x) if( doDebug ) { std::cout << x; } |
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| 51 | |
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| 52 | namespace SymTab { |
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| 53 | |
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| 54 | class HoistStruct : public Visitor |
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| 55 | { |
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| 56 | public: |
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| 57 | static void hoistStruct( std::list< Declaration* > &translationUnit ); |
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| 58 | |
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| 59 | std::list< Declaration* > &get_declsToAdd() { return declsToAdd; } |
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| 60 | |
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| 61 | virtual void visit(StructDecl *aggregateDecl); |
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| 62 | virtual void visit(UnionDecl *aggregateDecl); |
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| 63 | |
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| 64 | virtual void visit(CompoundStmt *compoundStmt); |
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| 65 | virtual void visit(IfStmt *ifStmt); |
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| 66 | virtual void visit(WhileStmt *whileStmt); |
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| 67 | virtual void visit(ForStmt *forStmt); |
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| 68 | virtual void visit(SwitchStmt *switchStmt); |
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| 69 | virtual void visit(ChooseStmt *chooseStmt); |
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| 70 | virtual void visit(CaseStmt *caseStmt); |
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| 71 | virtual void visit(CatchStmt *catchStmt); |
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| 72 | |
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| 73 | private: |
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| 74 | HoistStruct(); |
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| 75 | |
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| 76 | template< typename AggDecl > void handleAggregate( AggDecl *aggregateDecl ); |
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| 77 | |
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| 78 | std::list< Declaration* > declsToAdd; |
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| 79 | bool inStruct; |
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| 80 | }; |
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| 81 | |
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| 82 | class Pass1 : public Visitor |
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| 83 | { |
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| 84 | typedef Visitor Parent; |
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| 85 | virtual void visit( EnumDecl *aggregateDecl); |
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| 86 | virtual void visit( FunctionType *func ); |
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| 87 | }; |
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| 88 | |
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| 89 | class Pass2 : public Indexer |
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| 90 | { |
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| 91 | typedef Indexer Parent; |
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| 92 | |
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| 93 | public: |
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| 94 | Pass2( bool doDebug, const Indexer *indexer ); |
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| 95 | |
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| 96 | private: |
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| 97 | virtual void visit( StructInstType *structInst ); |
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| 98 | virtual void visit( UnionInstType *unionInst ); |
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| 99 | virtual void visit( ContextInstType *contextInst ); |
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| 100 | virtual void visit( StructDecl *structDecl ); |
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| 101 | virtual void visit( UnionDecl *unionDecl ); |
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| 102 | virtual void visit( TypeInstType *typeInst ); |
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| 103 | |
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| 104 | const Indexer *indexer; |
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| 105 | |
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| 106 | typedef std::map< std::string, std::list< StructInstType* > > ForwardStructsType; |
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| 107 | typedef std::map< std::string, std::list< UnionInstType* > > ForwardUnionsType; |
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| 108 | ForwardStructsType forwardStructs; |
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| 109 | ForwardUnionsType forwardUnions; |
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| 110 | }; |
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| 111 | |
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| 112 | class Pass3 : public Indexer |
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| 113 | { |
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| 114 | typedef Indexer Parent; |
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| 115 | |
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| 116 | public: |
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| 117 | Pass3( const Indexer *indexer ); |
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| 118 | |
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| 119 | private: |
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| 120 | virtual void visit( ObjectDecl *object ); |
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| 121 | virtual void visit( FunctionDecl *func ); |
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| 122 | |
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| 123 | const Indexer *indexer; |
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| 124 | }; |
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| 125 | |
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| 126 | class AddStructAssignment : public Visitor |
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| 127 | { |
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| 128 | public: |
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| 129 | static void addStructAssignment( std::list< Declaration* > &translationUnit ); |
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| 130 | |
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| 131 | std::list< Declaration* > &get_declsToAdd() { return declsToAdd; } |
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| 132 | |
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| 133 | virtual void visit( StructDecl *structDecl ); |
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| 134 | virtual void visit( UnionDecl *structDecl ); |
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| 135 | virtual void visit( TypeDecl *typeDecl ); |
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| 136 | virtual void visit( ContextDecl *ctxDecl ); |
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| 137 | |
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| 138 | virtual void visit( FunctionType *ftype ); |
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| 139 | virtual void visit( PointerType *ftype ); |
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| 140 | |
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| 141 | virtual void visit(CompoundStmt *compoundStmt); |
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| 142 | virtual void visit(IfStmt *ifStmt); |
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| 143 | virtual void visit(WhileStmt *whileStmt); |
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| 144 | virtual void visit(ForStmt *forStmt); |
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| 145 | virtual void visit(SwitchStmt *switchStmt); |
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| 146 | virtual void visit(ChooseStmt *chooseStmt); |
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| 147 | virtual void visit(CaseStmt *caseStmt); |
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| 148 | virtual void visit(CatchStmt *catchStmt); |
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| 149 | |
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| 150 | private: |
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| 151 | template< typename StmtClass > void visitStatement(StmtClass *stmt); |
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| 152 | |
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| 153 | std::list< Declaration* > declsToAdd; |
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| 154 | std::set< std::string > structsDone; |
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| 155 | }; |
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| 156 | |
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| 157 | class EliminateTypedef : public Mutator |
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| 158 | { |
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| 159 | public: |
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| 160 | static void eliminateTypedef( std::list< Declaration* > &translationUnit ); |
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| 161 | |
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| 162 | private: |
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| 163 | virtual Declaration* mutate(TypedefDecl *typeDecl); |
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| 164 | virtual TypeDecl* mutate(TypeDecl *typeDecl); |
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| 165 | virtual DeclarationWithType* mutate(FunctionDecl *funcDecl); |
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| 166 | virtual ObjectDecl* mutate(ObjectDecl *objDecl); |
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| 167 | virtual CompoundStmt* mutate(CompoundStmt *compoundStmt); |
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| 168 | virtual Type* mutate(TypeInstType *aggregateUseType); |
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| 169 | virtual Expression* mutate(CastExpr *castExpr); |
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| 170 | |
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| 171 | std::map< std::string, TypedefDecl* > typedefNames; |
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| 172 | }; |
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| 173 | |
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| 174 | void |
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| 175 | validate( std::list< Declaration* > &translationUnit, bool doDebug, const Indexer *indexer ) |
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| 176 | { |
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| 177 | Pass1 pass1; |
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| 178 | Pass2 pass2( doDebug, indexer ); |
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| 179 | Pass3 pass3( indexer ); |
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| 180 | EliminateTypedef::eliminateTypedef( translationUnit ); |
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| 181 | HoistStruct::hoistStruct( translationUnit ); |
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| 182 | acceptAll( translationUnit, pass1 ); |
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| 183 | acceptAll( translationUnit, pass2 ); |
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| 184 | AddStructAssignment::addStructAssignment( translationUnit ); |
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| 185 | acceptAll( translationUnit, pass3 ); |
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| 186 | } |
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| 187 | |
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| 188 | void |
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| 189 | validateType( Type *type, const Indexer *indexer ) |
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| 190 | { |
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| 191 | Pass1 pass1; |
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| 192 | Pass2 pass2( false, indexer ); |
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| 193 | Pass3 pass3( indexer ); |
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| 194 | type->accept( pass1 ); |
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| 195 | type->accept( pass2 ); |
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| 196 | type->accept( pass3 ); |
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| 197 | } |
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| 198 | |
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| 199 | template< typename Visitor > |
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| 200 | void |
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| 201 | acceptAndAdd( std::list< Declaration* > &translationUnit, Visitor &visitor, bool addBefore ) |
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| 202 | { |
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| 203 | std::list< Declaration* >::iterator i = translationUnit.begin(); |
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| 204 | while( i != translationUnit.end() ) { |
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| 205 | (*i)->accept( visitor ); |
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| 206 | std::list< Declaration* >::iterator next = i; |
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| 207 | next++; |
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| 208 | if( !visitor.get_declsToAdd().empty() ) { |
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| 209 | translationUnit.splice( addBefore ? i : next, visitor.get_declsToAdd() ); |
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| 210 | } |
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| 211 | i = next; |
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| 212 | } |
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| 213 | } |
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| 214 | |
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| 215 | /* static class method */ |
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| 216 | void |
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| 217 | HoistStruct::hoistStruct( std::list< Declaration* > &translationUnit ) |
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| 218 | { |
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| 219 | HoistStruct hoister; |
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| 220 | acceptAndAdd( translationUnit, hoister, true ); |
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| 221 | } |
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| 222 | |
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| 223 | HoistStruct::HoistStruct() |
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| 224 | : inStruct( false ) |
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| 225 | { |
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| 226 | } |
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| 227 | |
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| 228 | void |
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| 229 | filter( std::list< Declaration* > &declList, bool (*pred)( Declaration* ), bool doDelete ) |
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| 230 | { |
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| 231 | std::list< Declaration* >::iterator i = declList.begin(); |
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| 232 | while( i != declList.end() ) { |
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| 233 | std::list< Declaration* >::iterator next = i; |
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| 234 | ++next; |
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| 235 | if( pred( *i ) ) { |
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| 236 | if( doDelete ) { |
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| 237 | delete *i; |
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| 238 | } |
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| 239 | declList.erase( i ); |
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| 240 | } |
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| 241 | i = next; |
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| 242 | } |
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| 243 | } |
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| 244 | |
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| 245 | bool |
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| 246 | isStructOrUnion( Declaration *decl ) |
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| 247 | { |
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| 248 | return dynamic_cast< StructDecl* >( decl ) || dynamic_cast< UnionDecl* >( decl ); |
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| 249 | } |
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| 250 | |
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| 251 | template< typename AggDecl > |
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| 252 | void |
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| 253 | HoistStruct::handleAggregate( AggDecl *aggregateDecl ) |
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| 254 | { |
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| 255 | if( inStruct ) { |
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| 256 | declsToAdd.push_back( aggregateDecl ); |
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| 257 | Visitor::visit( aggregateDecl ); |
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| 258 | } else { |
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| 259 | inStruct = true; |
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| 260 | Visitor::visit( aggregateDecl ); |
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| 261 | inStruct = false; |
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| 262 | filter( aggregateDecl->get_members(), isStructOrUnion, false ); |
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| 263 | } |
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| 264 | } |
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| 265 | |
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| 266 | void |
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| 267 | HoistStruct::visit(StructDecl *aggregateDecl) |
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| 268 | { |
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| 269 | handleAggregate( aggregateDecl ); |
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| 270 | } |
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| 271 | |
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| 272 | void |
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| 273 | HoistStruct::visit(UnionDecl *aggregateDecl) |
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| 274 | { |
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| 275 | handleAggregate( aggregateDecl ); |
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| 276 | } |
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| 277 | |
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| 278 | void |
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| 279 | HoistStruct::visit(CompoundStmt *compoundStmt) |
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| 280 | { |
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| 281 | addVisit( compoundStmt, *this ); |
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| 282 | } |
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| 283 | |
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| 284 | void |
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| 285 | HoistStruct::visit(IfStmt *ifStmt) |
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| 286 | { |
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| 287 | addVisit( ifStmt, *this ); |
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| 288 | } |
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| 289 | |
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| 290 | void |
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| 291 | HoistStruct::visit(WhileStmt *whileStmt) |
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| 292 | { |
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| 293 | addVisit( whileStmt, *this ); |
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| 294 | } |
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| 295 | |
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| 296 | void |
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| 297 | HoistStruct::visit(ForStmt *forStmt) |
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| 298 | { |
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| 299 | addVisit( forStmt, *this ); |
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| 300 | } |
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| 301 | |
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| 302 | void |
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| 303 | HoistStruct::visit(SwitchStmt *switchStmt) |
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| 304 | { |
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| 305 | addVisit( switchStmt, *this ); |
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| 306 | } |
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| 307 | |
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| 308 | void |
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| 309 | HoistStruct::visit(ChooseStmt *switchStmt) |
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| 310 | { |
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| 311 | addVisit( switchStmt, *this ); |
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| 312 | } |
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| 313 | |
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| 314 | void |
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| 315 | HoistStruct::visit(CaseStmt *caseStmt) |
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| 316 | { |
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| 317 | addVisit( caseStmt, *this ); |
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| 318 | } |
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| 319 | |
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| 320 | void |
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| 321 | HoistStruct::visit(CatchStmt *cathStmt) |
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| 322 | { |
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| 323 | addVisit( cathStmt, *this ); |
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| 324 | } |
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| 325 | |
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| 326 | void |
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| 327 | Pass1::visit( EnumDecl *enumDecl) |
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| 328 | { |
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| 329 | // Set the type of each member of the enumeration to be EnumConstant |
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| 330 | |
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| 331 | for( std::list< Declaration* >::iterator i = enumDecl->get_members().begin(); i != enumDecl->get_members().end(); ++i ) { |
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| 332 | ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i ); |
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| 333 | assert( obj ); |
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| 334 | obj->set_type( new EnumInstType( Type::Qualifiers( true, false, false, false ), enumDecl->get_name() ) ); |
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| 335 | } |
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| 336 | Parent::visit( enumDecl ); |
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| 337 | } |
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| 338 | |
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| 339 | namespace { |
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| 340 | template< typename DWTIterator > |
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| 341 | void |
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| 342 | fixFunctionList( DWTIterator begin, DWTIterator end, FunctionType *func ) |
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| 343 | { |
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| 344 | // the only case in which "void" is valid is where it is the only one in the list; then |
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| 345 | // it should be removed entirely |
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| 346 | // other fix ups are handled by the FixFunction class |
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| 347 | if( begin == end ) return; |
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| 348 | FixFunction fixer; |
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| 349 | DWTIterator i = begin; |
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| 350 | *i = (*i)->acceptMutator( fixer ); |
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| 351 | if( fixer.get_isVoid() ) { |
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| 352 | DWTIterator j = i; |
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| 353 | ++i; |
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| 354 | func->get_parameters().erase( j ); |
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| 355 | if( i != end ) { |
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| 356 | throw SemanticError( "invalid type void in function type ", func ); |
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| 357 | } |
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| 358 | } else { |
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| 359 | ++i; |
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| 360 | for( ; i != end; ++i ) { |
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| 361 | FixFunction fixer; |
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| 362 | *i = (*i)->acceptMutator( fixer ); |
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| 363 | if( fixer.get_isVoid() ) { |
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| 364 | throw SemanticError( "invalid type void in function type ", func ); |
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| 365 | } |
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| 366 | } |
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| 367 | } |
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| 368 | } |
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| 369 | } |
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| 370 | |
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| 371 | void |
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| 372 | Pass1::visit( FunctionType *func ) |
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| 373 | { |
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| 374 | // Fix up parameters and return types |
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| 375 | fixFunctionList( func->get_parameters().begin(), func->get_parameters().end(), func ); |
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| 376 | fixFunctionList( func->get_returnVals().begin(), func->get_returnVals().end(), func ); |
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| 377 | Visitor::visit( func ); |
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| 378 | } |
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| 379 | |
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| 380 | Pass2::Pass2( bool doDebug, const Indexer *other_indexer ) |
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| 381 | : Indexer( doDebug ) |
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| 382 | { |
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| 383 | if( other_indexer ) { |
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| 384 | indexer = other_indexer; |
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| 385 | } else { |
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| 386 | indexer = this; |
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| 387 | } |
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| 388 | } |
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| 389 | |
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| 390 | void |
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| 391 | Pass2::visit( StructInstType *structInst ) |
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| 392 | { |
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| 393 | Parent::visit( structInst ); |
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| 394 | StructDecl *st = indexer->lookupStruct( structInst->get_name() ); |
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| 395 | // it's not a semantic error if the struct is not found, just an implicit forward declaration |
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| 396 | if( st ) { |
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| 397 | assert( !structInst->get_baseStruct() || structInst->get_baseStruct()->get_members().empty() || !st->get_members().empty() ); |
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| 398 | structInst->set_baseStruct( st ); |
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| 399 | } |
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| 400 | if( !st || st->get_members().empty() ) { |
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| 401 | // use of forward declaration |
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| 402 | forwardStructs[ structInst->get_name() ].push_back( structInst ); |
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| 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | void |
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| 407 | Pass2::visit( UnionInstType *unionInst ) |
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| 408 | { |
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| 409 | Parent::visit( unionInst ); |
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| 410 | UnionDecl *un = indexer->lookupUnion( unionInst->get_name() ); |
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| 411 | // it's not a semantic error if the union is not found, just an implicit forward declaration |
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| 412 | if( un ) { |
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| 413 | unionInst->set_baseUnion( un ); |
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| 414 | } |
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| 415 | if( !un || un->get_members().empty() ) { |
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| 416 | // use of forward declaration |
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| 417 | forwardUnions[ unionInst->get_name() ].push_back( unionInst ); |
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| 418 | } |
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| 419 | } |
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| 420 | |
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| 421 | void |
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| 422 | Pass2::visit( ContextInstType *contextInst ) |
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| 423 | { |
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| 424 | Parent::visit( contextInst ); |
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| 425 | ContextDecl *ctx = indexer->lookupContext( contextInst->get_name() ); |
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| 426 | if( !ctx ) { |
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| 427 | throw SemanticError( "use of undeclared context " + contextInst->get_name() ); |
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| 428 | } |
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| 429 | for( std::list< TypeDecl* >::const_iterator i = ctx->get_parameters().begin(); i != ctx->get_parameters().end(); ++i ) { |
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| 430 | for( std::list< DeclarationWithType* >::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
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| 431 | if( ContextInstType *otherCtx = dynamic_cast< ContextInstType* >(*assert) ) { |
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| 432 | cloneAll( otherCtx->get_members(), contextInst->get_members() ); |
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| 433 | } else { |
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| 434 | contextInst->get_members().push_back( (*assert)->clone() ); |
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| 435 | } |
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| 436 | } |
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| 437 | } |
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| 438 | applySubstitution( ctx->get_parameters().begin(), ctx->get_parameters().end(), contextInst->get_parameters().begin(), ctx->get_members().begin(), ctx->get_members().end(), back_inserter( contextInst->get_members() ) ); |
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| 439 | } |
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| 440 | |
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| 441 | void |
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| 442 | Pass2::visit( StructDecl *structDecl ) |
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| 443 | { |
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| 444 | if( !structDecl->get_members().empty() ) { |
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| 445 | ForwardStructsType::iterator fwds = forwardStructs.find( structDecl->get_name() ); |
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| 446 | if( fwds != forwardStructs.end() ) { |
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| 447 | for( std::list< StructInstType* >::iterator inst = fwds->second.begin(); inst != fwds->second.end(); ++inst ) { |
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| 448 | (*inst)->set_baseStruct( structDecl ); |
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| 449 | } |
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| 450 | forwardStructs.erase( fwds ); |
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| 451 | } |
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| 452 | } |
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| 453 | Indexer::visit( structDecl ); |
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| 454 | } |
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| 455 | |
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| 456 | void |
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| 457 | Pass2::visit( UnionDecl *unionDecl ) |
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| 458 | { |
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| 459 | if( !unionDecl->get_members().empty() ) { |
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| 460 | ForwardUnionsType::iterator fwds = forwardUnions.find( unionDecl->get_name() ); |
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| 461 | if( fwds != forwardUnions.end() ) { |
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| 462 | for( std::list< UnionInstType* >::iterator inst = fwds->second.begin(); inst != fwds->second.end(); ++inst ) { |
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| 463 | (*inst)->set_baseUnion( unionDecl ); |
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| 464 | } |
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| 465 | forwardUnions.erase( fwds ); |
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| 466 | } |
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| 467 | } |
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| 468 | Indexer::visit( unionDecl ); |
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| 469 | } |
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| 470 | |
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| 471 | void |
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| 472 | Pass2::visit( TypeInstType *typeInst ) |
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| 473 | { |
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| 474 | if( NamedTypeDecl *namedTypeDecl = lookupType( typeInst->get_name() ) ) { |
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| 475 | if( TypeDecl *typeDecl = dynamic_cast< TypeDecl* >( namedTypeDecl ) ) { |
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| 476 | typeInst->set_isFtype( typeDecl->get_kind() == TypeDecl::Ftype ); |
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| 477 | } |
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| 478 | } |
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| 479 | } |
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| 480 | |
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| 481 | Pass3::Pass3( const Indexer *other_indexer ) |
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| 482 | : Indexer( false ) |
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| 483 | { |
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| 484 | if( other_indexer ) { |
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| 485 | indexer = other_indexer; |
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| 486 | } else { |
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| 487 | indexer = this; |
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| 488 | } |
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| 489 | } |
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| 490 | |
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| 491 | void |
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| 492 | forallFixer( Type *func ) |
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| 493 | { |
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| 494 | // Fix up assertions |
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| 495 | for( std::list< TypeDecl* >::iterator type = func->get_forall().begin(); type != func->get_forall().end(); ++type ) { |
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| 496 | std::list< DeclarationWithType* > toBeDone, nextRound; |
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| 497 | toBeDone.splice( toBeDone.end(), (*type)->get_assertions() ); |
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| 498 | while( !toBeDone.empty() ) { |
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| 499 | for( std::list< DeclarationWithType* >::iterator assertion = toBeDone.begin(); assertion != toBeDone.end(); ++assertion ) { |
---|
| 500 | if( ContextInstType *ctx = dynamic_cast< ContextInstType* >( (*assertion)->get_type() ) ) { |
---|
| 501 | for( std::list< Declaration* >::const_iterator i = ctx->get_members().begin(); i != ctx->get_members().end(); ++i ) { |
---|
| 502 | DeclarationWithType *dwt = dynamic_cast< DeclarationWithType* >( *i ); |
---|
| 503 | assert( dwt ); |
---|
| 504 | nextRound.push_back( dwt->clone() ); |
---|
| 505 | } |
---|
| 506 | delete ctx; |
---|
| 507 | } else { |
---|
| 508 | FixFunction fixer; |
---|
| 509 | *assertion = (*assertion)->acceptMutator( fixer ); |
---|
| 510 | if( fixer.get_isVoid() ) { |
---|
| 511 | throw SemanticError( "invalid type void in assertion of function ", func ); |
---|
| 512 | } |
---|
| 513 | (*type)->get_assertions().push_back( *assertion ); |
---|
| 514 | } |
---|
| 515 | } |
---|
| 516 | toBeDone.clear(); |
---|
| 517 | toBeDone.splice( toBeDone.end(), nextRound ); |
---|
| 518 | } |
---|
| 519 | } |
---|
| 520 | } |
---|
| 521 | |
---|
| 522 | void |
---|
| 523 | Pass3::visit( ObjectDecl *object ) |
---|
| 524 | { |
---|
| 525 | forallFixer( object->get_type() ); |
---|
| 526 | if( PointerType *pointer = dynamic_cast< PointerType* >( object->get_type() ) ) { |
---|
| 527 | forallFixer( pointer->get_base() ); |
---|
| 528 | } |
---|
| 529 | Parent::visit( object ); |
---|
| 530 | object->fixUniqueId(); |
---|
| 531 | } |
---|
| 532 | |
---|
| 533 | void |
---|
| 534 | Pass3::visit( FunctionDecl *func ) |
---|
| 535 | { |
---|
| 536 | forallFixer( func->get_type() ); |
---|
| 537 | Parent::visit( func ); |
---|
| 538 | func->fixUniqueId(); |
---|
| 539 | } |
---|
| 540 | |
---|
| 541 | static const std::list< std::string > noLabels; |
---|
| 542 | |
---|
| 543 | /* static class method */ |
---|
| 544 | void |
---|
| 545 | AddStructAssignment::addStructAssignment( std::list< Declaration* > &translationUnit ) |
---|
| 546 | { |
---|
| 547 | AddStructAssignment visitor; |
---|
| 548 | acceptAndAdd( translationUnit, visitor, false ); |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | template< typename OutputIterator > |
---|
| 552 | void |
---|
| 553 | makeScalarAssignment( ObjectDecl *srcParam, ObjectDecl *dstParam, DeclarationWithType *member, OutputIterator out ) |
---|
| 554 | { |
---|
| 555 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 556 | |
---|
| 557 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 558 | derefExpr->get_args().push_back( new VariableExpr( dstParam ) ); |
---|
| 559 | |
---|
| 560 | // do something special for unnamed members |
---|
| 561 | Expression *dstselect = new AddressExpr( new MemberExpr( member, derefExpr ) ); |
---|
| 562 | assignExpr->get_args().push_back( dstselect ); |
---|
| 563 | |
---|
| 564 | Expression *srcselect = new MemberExpr( member, new VariableExpr( srcParam ) ); |
---|
| 565 | assignExpr->get_args().push_back( srcselect ); |
---|
| 566 | |
---|
| 567 | *out++ = new ExprStmt( noLabels, assignExpr ); |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | template< typename OutputIterator > |
---|
| 571 | void |
---|
| 572 | makeArrayAssignment( ObjectDecl *srcParam, ObjectDecl *dstParam, DeclarationWithType *member, ArrayType *array, OutputIterator out ) |
---|
| 573 | { |
---|
| 574 | static UniqueName indexName( "_index" ); |
---|
| 575 | |
---|
| 576 | // for a flexible array member nothing is done -- user must define own assignment |
---|
| 577 | if( !array->get_dimension() ) return; |
---|
| 578 | |
---|
| 579 | ObjectDecl *index = new ObjectDecl( indexName.newName(), Declaration::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::SignedInt ), 0 ); |
---|
| 580 | *out++ = new DeclStmt( noLabels, index ); |
---|
| 581 | |
---|
| 582 | UntypedExpr *init = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 583 | init->get_args().push_back( new AddressExpr( new VariableExpr( index ) ) ); |
---|
| 584 | init->get_args().push_back( new NameExpr( "0" ) ); |
---|
| 585 | Statement *initStmt = new ExprStmt( noLabels, init ); |
---|
| 586 | |
---|
| 587 | UntypedExpr *cond = new UntypedExpr( new NameExpr( "?<?" ) ); |
---|
| 588 | cond->get_args().push_back( new VariableExpr( index ) ); |
---|
| 589 | cond->get_args().push_back( array->get_dimension()->clone() ); |
---|
| 590 | |
---|
| 591 | UntypedExpr *inc = new UntypedExpr( new NameExpr( "++?" ) ); |
---|
| 592 | inc->get_args().push_back( new AddressExpr( new VariableExpr( index ) ) ); |
---|
| 593 | |
---|
| 594 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 595 | |
---|
| 596 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 597 | derefExpr->get_args().push_back( new VariableExpr( dstParam ) ); |
---|
| 598 | |
---|
| 599 | Expression *dstselect = new MemberExpr( member, derefExpr ); |
---|
| 600 | UntypedExpr *dstIndex = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
| 601 | dstIndex->get_args().push_back( dstselect ); |
---|
| 602 | dstIndex->get_args().push_back( new VariableExpr( index ) ); |
---|
| 603 | assignExpr->get_args().push_back( dstIndex ); |
---|
| 604 | |
---|
| 605 | Expression *srcselect = new MemberExpr( member, new VariableExpr( srcParam ) ); |
---|
| 606 | UntypedExpr *srcIndex = new UntypedExpr( new NameExpr( "?[?]" ) ); |
---|
| 607 | srcIndex->get_args().push_back( srcselect ); |
---|
| 608 | srcIndex->get_args().push_back( new VariableExpr( index ) ); |
---|
| 609 | assignExpr->get_args().push_back( srcIndex ); |
---|
| 610 | |
---|
| 611 | *out++ = new ForStmt( noLabels, initStmt, cond, inc, new ExprStmt( noLabels, assignExpr ) ); |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | Declaration* |
---|
| 615 | makeStructAssignment( StructDecl *aggregateDecl, StructInstType *refType ) |
---|
| 616 | { |
---|
| 617 | FunctionType *assignType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 618 | |
---|
| 619 | ObjectDecl *returnVal = new ObjectDecl( "", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 ); |
---|
| 620 | assignType->get_returnVals().push_back( returnVal ); |
---|
| 621 | |
---|
| 622 | ObjectDecl *dstParam = new ObjectDecl( "_dst", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), refType->clone() ), 0 ); |
---|
| 623 | assignType->get_parameters().push_back( dstParam ); |
---|
| 624 | |
---|
| 625 | ObjectDecl *srcParam = new ObjectDecl( "_src", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, refType, 0 ); |
---|
| 626 | assignType->get_parameters().push_back( srcParam ); |
---|
| 627 | |
---|
| 628 | FunctionDecl *assignDecl = new FunctionDecl( "?=?", Declaration::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true ); |
---|
| 629 | assignDecl->fixUniqueId(); |
---|
| 630 | |
---|
| 631 | for( std::list< Declaration* >::const_iterator member = aggregateDecl->get_members().begin(); member != aggregateDecl->get_members().end(); ++member ) { |
---|
| 632 | if( DeclarationWithType *dwt = dynamic_cast< DeclarationWithType* >( *member ) ) { |
---|
| 633 | if( ArrayType *array = dynamic_cast< ArrayType* >( dwt->get_type() ) ) { |
---|
| 634 | makeArrayAssignment( srcParam, dstParam, dwt, array, back_inserter( assignDecl->get_statements()->get_kids() ) ); |
---|
| 635 | } else { |
---|
| 636 | makeScalarAssignment( srcParam, dstParam, dwt, back_inserter( assignDecl->get_statements()->get_kids() ) ); |
---|
| 637 | } |
---|
| 638 | } |
---|
| 639 | } |
---|
| 640 | assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) ); |
---|
| 641 | |
---|
| 642 | return assignDecl; |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | Declaration* |
---|
| 646 | makeUnionAssignment( UnionDecl *aggregateDecl, UnionInstType *refType ) |
---|
| 647 | { |
---|
| 648 | FunctionType *assignType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 649 | |
---|
| 650 | ObjectDecl *returnVal = new ObjectDecl( "", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 ); |
---|
| 651 | assignType->get_returnVals().push_back( returnVal ); |
---|
| 652 | |
---|
| 653 | ObjectDecl *dstParam = new ObjectDecl( "_dst", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), refType->clone() ), 0 ); |
---|
| 654 | assignType->get_parameters().push_back( dstParam ); |
---|
| 655 | |
---|
| 656 | ObjectDecl *srcParam = new ObjectDecl( "_src", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, refType, 0 ); |
---|
| 657 | assignType->get_parameters().push_back( srcParam ); |
---|
| 658 | |
---|
| 659 | FunctionDecl *assignDecl = new FunctionDecl( "?=?", Declaration::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true ); |
---|
| 660 | assignDecl->fixUniqueId(); |
---|
| 661 | |
---|
| 662 | UntypedExpr *copy = new UntypedExpr( new NameExpr( "__builtin_memcpy" ) ); |
---|
| 663 | copy->get_args().push_back( new VariableExpr( dstParam ) ); |
---|
| 664 | copy->get_args().push_back( new AddressExpr( new VariableExpr( srcParam ) ) ); |
---|
| 665 | copy->get_args().push_back( new SizeofExpr( refType->clone() ) ); |
---|
| 666 | |
---|
| 667 | assignDecl->get_statements()->get_kids().push_back( new ExprStmt( noLabels, copy ) ); |
---|
| 668 | assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) ); |
---|
| 669 | |
---|
| 670 | return assignDecl; |
---|
| 671 | } |
---|
| 672 | |
---|
| 673 | void |
---|
| 674 | AddStructAssignment::visit( StructDecl *structDecl ) |
---|
| 675 | { |
---|
| 676 | if( !structDecl->get_members().empty() && structsDone.find( structDecl->get_name() ) == structsDone.end() ) { |
---|
| 677 | StructInstType *structInst = new StructInstType( Type::Qualifiers(), structDecl->get_name() ); |
---|
| 678 | structInst->set_baseStruct( structDecl ); |
---|
| 679 | declsToAdd.push_back( makeStructAssignment( structDecl, structInst ) ); |
---|
| 680 | structsDone.insert( structDecl->get_name() ); |
---|
| 681 | } |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | void |
---|
| 685 | AddStructAssignment::visit( UnionDecl *unionDecl ) |
---|
| 686 | { |
---|
| 687 | if( !unionDecl->get_members().empty() ) { |
---|
| 688 | UnionInstType *unionInst = new UnionInstType( Type::Qualifiers(), unionDecl->get_name() ); |
---|
| 689 | unionInst->set_baseUnion( unionDecl ); |
---|
| 690 | declsToAdd.push_back( makeUnionAssignment( unionDecl, unionInst ) ); |
---|
| 691 | } |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | void |
---|
| 695 | AddStructAssignment::visit( TypeDecl *typeDecl ) |
---|
| 696 | { |
---|
| 697 | CompoundStmt *stmts = 0; |
---|
| 698 | TypeInstType *typeInst = new TypeInstType( Type::Qualifiers(), typeDecl->get_name(), false ); |
---|
| 699 | typeInst->set_baseType( typeDecl ); |
---|
| 700 | ObjectDecl *src = new ObjectDecl( "_src", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, typeInst->clone(), 0 ); |
---|
| 701 | ObjectDecl *dst = new ObjectDecl( "_dst", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), typeInst->clone() ), 0 ); |
---|
| 702 | if( typeDecl->get_base() ) { |
---|
| 703 | stmts = new CompoundStmt( std::list< Label >() ); |
---|
| 704 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 705 | assign->get_args().push_back( new CastExpr( new VariableExpr( dst ), new PointerType( Type::Qualifiers(), typeDecl->get_base()->clone() ) ) ); |
---|
| 706 | assign->get_args().push_back( new CastExpr( new VariableExpr( src ), typeDecl->get_base()->clone() ) ); |
---|
| 707 | stmts->get_kids().push_back( new ReturnStmt( std::list< Label >(), assign ) ); |
---|
| 708 | } |
---|
| 709 | FunctionType *type = new FunctionType( Type::Qualifiers(), false ); |
---|
| 710 | type->get_returnVals().push_back( new ObjectDecl( "", Declaration::NoStorageClass, LinkageSpec::Cforall, 0, typeInst, 0 ) ); |
---|
| 711 | type->get_parameters().push_back( dst ); |
---|
| 712 | type->get_parameters().push_back( src ); |
---|
| 713 | FunctionDecl *func = new FunctionDecl( "?=?", Declaration::NoStorageClass, LinkageSpec::AutoGen, type, stmts, false ); |
---|
| 714 | declsToAdd.push_back( func ); |
---|
| 715 | } |
---|
| 716 | |
---|
| 717 | void |
---|
| 718 | addDecls( std::list< Declaration* > &declsToAdd, std::list< Statement* > &statements, std::list< Statement* >::iterator i ) |
---|
| 719 | { |
---|
| 720 | if( !declsToAdd.empty() ) { |
---|
| 721 | for( std::list< Declaration* >::iterator decl = declsToAdd.begin(); decl != declsToAdd.end(); ++decl ) { |
---|
| 722 | statements.insert( i, new DeclStmt( noLabels, *decl ) ); |
---|
| 723 | } |
---|
| 724 | declsToAdd.clear(); |
---|
| 725 | } |
---|
| 726 | } |
---|
| 727 | |
---|
| 728 | void |
---|
| 729 | AddStructAssignment::visit(FunctionType *) |
---|
| 730 | { |
---|
| 731 | // ensure that we don't add assignment ops for types defined |
---|
| 732 | // as part of the function |
---|
| 733 | } |
---|
| 734 | |
---|
| 735 | void |
---|
| 736 | AddStructAssignment::visit(PointerType *) |
---|
| 737 | { |
---|
| 738 | // ensure that we don't add assignment ops for types defined |
---|
| 739 | // as part of the pointer |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | void |
---|
| 743 | AddStructAssignment::visit(ContextDecl *) |
---|
| 744 | { |
---|
| 745 | // ensure that we don't add assignment ops for types defined |
---|
| 746 | // as part of the context |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | template< typename StmtClass > |
---|
| 750 | inline void |
---|
| 751 | AddStructAssignment::visitStatement(StmtClass *stmt) |
---|
| 752 | { |
---|
| 753 | std::set< std::string > oldStructs = structsDone; |
---|
| 754 | addVisit( stmt, *this ); |
---|
| 755 | structsDone = oldStructs; |
---|
| 756 | } |
---|
| 757 | |
---|
| 758 | void |
---|
| 759 | AddStructAssignment::visit(CompoundStmt *compoundStmt) |
---|
| 760 | { |
---|
| 761 | visitStatement( compoundStmt ); |
---|
| 762 | } |
---|
| 763 | |
---|
| 764 | void |
---|
| 765 | AddStructAssignment::visit(IfStmt *ifStmt) |
---|
| 766 | { |
---|
| 767 | visitStatement( ifStmt ); |
---|
| 768 | } |
---|
| 769 | |
---|
| 770 | void |
---|
| 771 | AddStructAssignment::visit(WhileStmt *whileStmt) |
---|
| 772 | { |
---|
| 773 | visitStatement( whileStmt ); |
---|
| 774 | } |
---|
| 775 | |
---|
| 776 | void |
---|
| 777 | AddStructAssignment::visit(ForStmt *forStmt) |
---|
| 778 | { |
---|
| 779 | visitStatement( forStmt ); |
---|
| 780 | } |
---|
| 781 | |
---|
| 782 | void |
---|
| 783 | AddStructAssignment::visit(SwitchStmt *switchStmt) |
---|
| 784 | { |
---|
| 785 | visitStatement( switchStmt ); |
---|
| 786 | } |
---|
| 787 | |
---|
| 788 | void |
---|
| 789 | AddStructAssignment::visit(ChooseStmt *switchStmt) |
---|
| 790 | { |
---|
| 791 | visitStatement( switchStmt ); |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | void |
---|
| 795 | AddStructAssignment::visit(CaseStmt *caseStmt) |
---|
| 796 | { |
---|
| 797 | visitStatement( caseStmt ); |
---|
| 798 | } |
---|
| 799 | |
---|
| 800 | void |
---|
| 801 | AddStructAssignment::visit(CatchStmt *cathStmt) |
---|
| 802 | { |
---|
| 803 | visitStatement( cathStmt ); |
---|
| 804 | } |
---|
| 805 | |
---|
| 806 | bool |
---|
| 807 | isTypedef( Declaration *decl ) |
---|
| 808 | { |
---|
| 809 | return dynamic_cast< TypedefDecl* >( decl ); |
---|
| 810 | } |
---|
| 811 | |
---|
| 812 | |
---|
| 813 | /* static class method */ |
---|
| 814 | void |
---|
| 815 | EliminateTypedef::eliminateTypedef( std::list< Declaration* > &translationUnit ) |
---|
| 816 | { |
---|
| 817 | EliminateTypedef eliminator; |
---|
| 818 | mutateAll( translationUnit, eliminator ); |
---|
| 819 | filter( translationUnit, isTypedef, true ); |
---|
| 820 | } |
---|
| 821 | |
---|
| 822 | Type* |
---|
| 823 | EliminateTypedef::mutate( TypeInstType *typeInst ) |
---|
| 824 | { |
---|
| 825 | std::map< std::string, TypedefDecl* >::const_iterator def = typedefNames.find( typeInst->get_name() ); |
---|
| 826 | if( def != typedefNames.end() ) { |
---|
| 827 | Type *ret = def->second->get_base()->clone(); |
---|
| 828 | ret->get_qualifiers() += typeInst->get_qualifiers(); |
---|
| 829 | delete typeInst; |
---|
| 830 | return ret; |
---|
| 831 | } |
---|
| 832 | return typeInst; |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | Declaration* |
---|
| 836 | EliminateTypedef::mutate( TypedefDecl *tyDecl ) |
---|
| 837 | { |
---|
| 838 | Declaration *ret = Mutator::mutate( tyDecl ); |
---|
| 839 | typedefNames[ tyDecl->get_name() ] = tyDecl; |
---|
| 840 | if( AggregateDecl *aggDecl = dynamic_cast< AggregateDecl* >( tyDecl->get_base() ) ) { |
---|
| 841 | tyDecl->set_base( 0 ); |
---|
| 842 | delete tyDecl; |
---|
| 843 | return aggDecl; |
---|
| 844 | } else { |
---|
| 845 | return ret; |
---|
| 846 | } |
---|
| 847 | } |
---|
| 848 | |
---|
| 849 | TypeDecl* |
---|
| 850 | EliminateTypedef::mutate(TypeDecl *typeDecl) |
---|
| 851 | { |
---|
| 852 | std::map< std::string, TypedefDecl* >::iterator i = typedefNames.find( typeDecl->get_name() ); |
---|
| 853 | if( i != typedefNames.end() ) { |
---|
| 854 | typedefNames.erase( i ) ; |
---|
| 855 | } |
---|
| 856 | return typeDecl; |
---|
| 857 | } |
---|
| 858 | |
---|
| 859 | DeclarationWithType* |
---|
| 860 | EliminateTypedef::mutate(FunctionDecl *funcDecl) |
---|
| 861 | { |
---|
| 862 | std::map< std::string, TypedefDecl* > oldNames = typedefNames; |
---|
| 863 | DeclarationWithType *ret = Mutator::mutate( funcDecl ); |
---|
| 864 | typedefNames = oldNames; |
---|
| 865 | return ret; |
---|
| 866 | } |
---|
| 867 | |
---|
| 868 | ObjectDecl* |
---|
| 869 | EliminateTypedef::mutate(ObjectDecl *objDecl) |
---|
| 870 | { |
---|
| 871 | std::map< std::string, TypedefDecl* > oldNames = typedefNames; |
---|
| 872 | ObjectDecl *ret = Mutator::mutate( objDecl ); |
---|
| 873 | typedefNames = oldNames; |
---|
| 874 | return ret; |
---|
| 875 | } |
---|
| 876 | |
---|
| 877 | Expression* |
---|
| 878 | EliminateTypedef::mutate(CastExpr *castExpr) |
---|
| 879 | { |
---|
| 880 | std::map< std::string, TypedefDecl* > oldNames = typedefNames; |
---|
| 881 | Expression *ret = Mutator::mutate( castExpr ); |
---|
| 882 | typedefNames = oldNames; |
---|
| 883 | return ret; |
---|
| 884 | } |
---|
| 885 | |
---|
| 886 | CompoundStmt * |
---|
| 887 | EliminateTypedef::mutate( CompoundStmt *compoundStmt ) |
---|
| 888 | { |
---|
| 889 | std::map< std::string, TypedefDecl* > oldNames = typedefNames; |
---|
| 890 | CompoundStmt *ret = Mutator::mutate( compoundStmt ); |
---|
| 891 | std::list< Statement* >::iterator i = compoundStmt->get_kids().begin(); |
---|
| 892 | while( i != compoundStmt->get_kids().end() ) { |
---|
| 893 | std::list< Statement* >::iterator next = i; |
---|
| 894 | ++next; |
---|
| 895 | if( DeclStmt *declStmt = dynamic_cast< DeclStmt* >( *i ) ) { |
---|
| 896 | if( dynamic_cast< TypedefDecl* >( declStmt->get_decl() ) ) { |
---|
| 897 | delete *i; |
---|
| 898 | compoundStmt->get_kids().erase( i ); |
---|
| 899 | } |
---|
| 900 | } |
---|
| 901 | i = next; |
---|
| 902 | } |
---|
| 903 | typedefNames = oldNames; |
---|
| 904 | return ret; |
---|
| 905 | } |
---|
| 906 | |
---|
| 907 | } // namespace SymTab |
---|