source: src/CodeGen/CodeGenerator.h @ 66d12f7

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// CodeGenerator.h --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Sat Jul 30 01:23:43 2016
// Update Count     : 36
//

#ifndef CODEGENV_H
#define CODEGENV_H

#include <list>

#include "SynTree/Declaration.h"
#include "SynTree/SynTree.h"
#include "SynTree/Visitor.h"

#include "SymTab/Indexer.h"

namespace CodeGen {
        class CodeGenerator : public Visitor {
          public:
                static int tabsize;

                CodeGenerator( std::ostream &os );
                CodeGenerator( std::ostream &os, std::string, int indent = 0, bool infun = false );
                CodeGenerator( std::ostream &os, char *, int indent = 0, bool infun = false );

                //*** Declaration
                virtual void visit( StructDecl * );
                virtual void visit( FunctionDecl * );
                virtual void visit( ObjectDecl * );
                virtual void visit( UnionDecl *aggregateDecl );
                virtual void visit( EnumDecl *aggregateDecl );
                virtual void visit( TraitDecl *aggregateDecl );
                virtual void visit( TypedefDecl *typeDecl );
                virtual void visit( TypeDecl *typeDecl );

                //*** Initializer
                virtual void visit( SingleInit * );
                virtual void visit( ListInit * );

                //*** Constant
                virtual void visit( Constant * );

                //*** Expression
                virtual void visit( ApplicationExpr *applicationExpr );
                virtual void visit( UntypedExpr *untypedExpr );
                virtual void visit( NameExpr *nameExpr );
                virtual void visit( AddressExpr *addressExpr );
                virtual void visit( CastExpr *castExpr );
                virtual void visit( UntypedMemberExpr *memberExpr );
                virtual void visit( MemberExpr *memberExpr );
                virtual void visit( VariableExpr *variableExpr );
                virtual void visit( ConstantExpr *constantExpr );
                virtual void visit( SizeofExpr *sizeofExpr );
                virtual void visit( AlignofExpr *alignofExpr );
                virtual void visit( UntypedOffsetofExpr *offsetofExpr );
                virtual void visit( OffsetofExpr *offsetofExpr );
                virtual void visit( OffsetPackExpr *offsetPackExpr );
                virtual void visit( LogicalExpr *logicalExpr );
                virtual void visit( ConditionalExpr *conditionalExpr );
                virtual void visit( CommaExpr *commaExpr );
                virtual void visit( TupleExpr *tupleExpr );
                virtual void visit( TypeExpr *typeExpr );
                virtual void visit( AsmExpr * );

                //*** Statements
                virtual void visit( CompoundStmt * );
                virtual void visit( ExprStmt * );
                virtual void visit( AsmStmt * );
                virtual void visit( IfStmt * );
                virtual void visit( SwitchStmt * );
                virtual void visit( CaseStmt * );
                virtual void visit( BranchStmt * );
                virtual void visit( ReturnStmt * );
                virtual void visit( WhileStmt * );
                virtual void visit( ForStmt * );
                virtual void visit( NullStmt * );
                virtual void visit( DeclStmt * );

                void genAttributes( std::list< Attribute * > & attributes );

                template< class Iterator > void genCommaList( Iterator begin, Iterator end );
                template< class Iterator > void genFredList( Iterator begin, Iterator end );

                struct Indenter {
                        Indenter(CodeGenerator &cg) : cg(cg) {}
                        CodeGenerator & cg;
                        std::ostream& operator()(std::ostream & os) const;
                };

                struct LabelPrinter {
                        LabelPrinter(CodeGenerator &cg) : cg(cg), labels( 0 ) {}
                        LabelPrinter & operator()( std::list< Label > & l );
                        CodeGenerator & cg;
                        std::list< Label > * labels;
                };

                void extension( Expression *expr );
                void extension( Declaration *decl );
          private:

                Indenter indent;
                int cur_indent;
                bool insideFunction;
                std::ostream &output;
                LabelPrinter printLabels;

                void printDesignators( std::list< Expression * > & );
                void handleStorageClass( Declaration *decl );
                void handleAggregate( AggregateDecl *aggDecl );
                void handleTypedef( NamedTypeDecl *namedType );
        }; // CodeGenerator

        template< class Iterator >
        void CodeGenerator::genCommaList( Iterator begin, Iterator end ) {
                if ( begin == end ) return;

                for ( ;; ) {
                        (*begin++)->accept( *this );
                        if ( begin == end ) return;
                        output << ", ";
                } // for
        }

        template< class Iterator >
        void CodeGenerator::genFredList( Iterator begin, Iterator end ) {
                if ( begin == end ) return;

                for ( ;; ) {
                        (*begin++)->accept( *this );
                        if ( begin == end ) return;
                        output << " ... ";
                } // for
        }

        inline bool doSemicolon( Declaration* decl ) {
                if ( FunctionDecl* func = dynamic_cast< FunctionDecl* >( decl ) ) {
                        return ! func->get_statements();
                } // if
                return true;
        }
} // namespace CodeGen

#endif // CODEGENV_H

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //