| 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 | // CodeGenerator.h -- |
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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 : Andrew Beach |
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| 12 | // Last Modified On : Fri Aug 18 15:40:00 2017 |
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| 13 | // Update Count : 56 |
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| 14 | // |
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| 15 | |
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| 16 | #pragma once |
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| 17 | |
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| 18 | #include <list> // for list |
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| 19 | #include <ostream> // for ostream, operator<< |
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| 20 | #include <string> // for string |
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| 21 | |
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| 22 | #include "Common/Indenter.h" // for Indenter |
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| 23 | #include "Common/PassVisitor.h" // for PassVisitor |
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| 24 | #include "SynTree/Declaration.h" // for DeclarationWithType (ptr only), Fun... |
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| 25 | #include "SynTree/Visitor.h" // for Visitor |
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| 26 | #include "SynTree/SynTree.h" // for Visitor Nodes |
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| 27 | |
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| 28 | namespace CodeGen { |
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| 29 | struct CodeGenerator : public WithShortCircuiting, public WithVisitorRef<CodeGenerator> { |
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| 30 | static int tabsize; |
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| 31 | |
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| 32 | CodeGenerator( std::ostream &os, bool pretty = false, bool genC = false, bool lineMarks = false ); |
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| 33 | CodeGenerator( std::ostream &os, std::string, int indent = 0, bool infun = false ); |
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| 34 | CodeGenerator( std::ostream &os, char *, int indent = 0, bool infun = false ); |
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| 35 | |
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| 36 | //*** Turn off visit_children for all nodes |
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| 37 | void previsit( BaseSyntaxNode * ); |
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| 38 | |
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| 39 | //*** Error for unhandled node types |
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| 40 | void postvisit( BaseSyntaxNode * ); |
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| 41 | |
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| 42 | //*** Declaration |
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| 43 | void postvisit( StructDecl * ); |
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| 44 | void postvisit( FunctionDecl * ); |
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| 45 | void postvisit( ObjectDecl * ); |
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| 46 | void postvisit( UnionDecl *aggregateDecl ); |
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| 47 | void postvisit( EnumDecl *aggregateDecl ); |
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| 48 | void postvisit( TraitDecl *aggregateDecl ); |
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| 49 | void postvisit( TypedefDecl *typeDecl ); |
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| 50 | void postvisit( TypeDecl *typeDecl ); |
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| 51 | |
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| 52 | //*** Initializer |
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| 53 | void postvisit( Designation * ); |
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| 54 | void postvisit( SingleInit * ); |
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| 55 | void postvisit( ListInit * ); |
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| 56 | void postvisit( ConstructorInit * ); |
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| 57 | |
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| 58 | //*** Constant |
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| 59 | void postvisit( Constant * ); |
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| 60 | |
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| 61 | //*** Expression |
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| 62 | void postvisit( ApplicationExpr *applicationExpr ); |
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| 63 | void postvisit( UntypedExpr *untypedExpr ); |
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| 64 | void postvisit( RangeExpr * rangeExpr ); |
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| 65 | void postvisit( NameExpr *nameExpr ); |
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| 66 | void postvisit( AddressExpr *addressExpr ); |
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| 67 | void postvisit( LabelAddressExpr *addressExpr ); |
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| 68 | void postvisit( CastExpr *castExpr ); |
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| 69 | void postvisit( VirtualCastExpr *castExpr ); |
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| 70 | void postvisit( UntypedMemberExpr *memberExpr ); |
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| 71 | void postvisit( MemberExpr *memberExpr ); |
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| 72 | void postvisit( VariableExpr *variableExpr ); |
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| 73 | void postvisit( ConstantExpr *constantExpr ); |
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| 74 | void postvisit( SizeofExpr *sizeofExpr ); |
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| 75 | void postvisit( AlignofExpr *alignofExpr ); |
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| 76 | void postvisit( UntypedOffsetofExpr *offsetofExpr ); |
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| 77 | void postvisit( OffsetofExpr *offsetofExpr ); |
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| 78 | void postvisit( OffsetPackExpr *offsetPackExpr ); |
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| 79 | void postvisit( LogicalExpr *logicalExpr ); |
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| 80 | void postvisit( ConditionalExpr *conditionalExpr ); |
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| 81 | void postvisit( CommaExpr *commaExpr ); |
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| 82 | void postvisit( CompoundLiteralExpr *compLitExpr ); |
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| 83 | void postvisit( UniqueExpr * ); |
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| 84 | void postvisit( TupleAssignExpr * tupleExpr ); |
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| 85 | void postvisit( UntypedTupleExpr *tupleExpr ); |
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| 86 | void postvisit( TupleExpr *tupleExpr ); |
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| 87 | void postvisit( TupleIndexExpr * tupleExpr ); |
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| 88 | void postvisit( TypeExpr *typeExpr ); |
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| 89 | void postvisit( AsmExpr * ); |
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| 90 | void postvisit( StmtExpr * ); |
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| 91 | |
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| 92 | //*** Statements |
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| 93 | void postvisit( CompoundStmt * ); |
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| 94 | void postvisit( ExprStmt * ); |
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| 95 | void postvisit( AsmStmt * ); |
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| 96 | void postvisit( AsmDecl * ); // special: statement in declaration context |
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| 97 | void postvisit( IfStmt * ); |
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| 98 | void postvisit( SwitchStmt * ); |
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| 99 | void postvisit( CaseStmt * ); |
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| 100 | void postvisit( BranchStmt * ); |
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| 101 | void postvisit( ReturnStmt * ); |
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| 102 | void postvisit( ThrowStmt * ); |
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| 103 | void postvisit( WhileStmt * ); |
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| 104 | void postvisit( ForStmt * ); |
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| 105 | void postvisit( NullStmt * ); |
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| 106 | void postvisit( DeclStmt * ); |
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| 107 | void postvisit( ImplicitCtorDtorStmt * ); |
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| 108 | |
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| 109 | void genAttributes( std::list< Attribute * > & attributes ); |
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| 110 | |
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| 111 | template< class Iterator > void genCommaList( Iterator begin, Iterator end ); |
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| 112 | |
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| 113 | struct LabelPrinter { |
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| 114 | LabelPrinter(CodeGenerator &cg) : cg(cg), labels( 0 ) {} |
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| 115 | LabelPrinter & operator()( std::list< Label > & l ); |
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| 116 | CodeGenerator & cg; |
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| 117 | std::list< Label > * labels; |
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| 118 | }; |
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| 119 | |
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| 120 | void asmName( DeclarationWithType *decl ); |
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| 121 | |
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| 122 | void extension( Expression *expr ); |
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| 123 | void extension( Declaration *decl ); |
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| 124 | |
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| 125 | void updateLocation( BaseSyntaxNode const * to ); |
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| 126 | private: |
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| 127 | Indenter indent; |
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| 128 | bool insideFunction; |
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| 129 | std::ostream &output; |
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| 130 | LabelPrinter printLabels; |
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| 131 | bool pretty = false; // pretty print |
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| 132 | bool genC = false; // true if output has to be C code |
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| 133 | bool lineMarks = false; |
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| 134 | |
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| 135 | CodeLocation currentLocation; |
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| 136 | void updateLocation( CodeLocation const & to ); |
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| 137 | void nextLine(); |
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| 138 | |
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| 139 | void handleStorageClass( DeclarationWithType *decl ); |
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| 140 | void handleAggregate( AggregateDecl *aggDecl, const std::string & kind ); |
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| 141 | void handleTypedef( NamedTypeDecl *namedType ); |
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| 142 | std::string mangleName( DeclarationWithType * decl ); |
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| 143 | }; // CodeGenerator |
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| 144 | |
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| 145 | template< class Iterator > |
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| 146 | void CodeGenerator::genCommaList( Iterator begin, Iterator end ) { |
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| 147 | if ( begin == end ) return; |
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| 148 | for ( ;; ) { |
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| 149 | (*begin++)->accept( *visitor ); |
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| 150 | if ( begin == end ) break; |
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| 151 | output << ", "; // separator |
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| 152 | } // for |
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| 153 | } // genCommaList |
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| 154 | |
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| 155 | inline bool doSemicolon( Declaration* decl ) { |
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| 156 | if ( FunctionDecl* func = dynamic_cast< FunctionDecl* >( decl ) ) { |
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| 157 | return ! func->get_statements(); |
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| 158 | } // if |
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| 159 | return true; |
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| 160 | } // doSemicolon |
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| 161 | |
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| 162 | /// returns C-compatible name of declaration |
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| 163 | std::string genName( DeclarationWithType * decl ); |
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| 164 | } // namespace CodeGen |
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| 165 | |
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| 166 | // Local Variables: // |
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| 167 | // tab-width: 4 // |
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| 168 | // mode: c++ // |
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| 169 | // compile-command: "make install" // |
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| 170 | // End: // |
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