source: src/SynTree/Visitor.h @ 240e1ff

//
// 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.
//
// Visitor.h --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Andrew Beach
// Last Modified On : Wed May  3 08:58:00 2017
// Update Count     : 10
//

#ifndef VISITOR_H
#define VISITOR_H

#include "SynTree.h"
#include "Common/SemanticError.h"
#include "Common/CompilerError.h"

class Visitor {
  protected:
        Visitor();
        virtual ~Visitor();
  public:
        // visit: Default implementation of all functions visits the children
    // of the given syntax node, but performs no other action.

        virtual void visit( ObjectDecl *objectDecl );
        virtual void visit( FunctionDecl *functionDecl );
        virtual void visit( StructDecl *aggregateDecl );
        virtual void visit( UnionDecl *aggregateDecl );
        virtual void visit( EnumDecl *aggregateDecl );
        virtual void visit( TraitDecl *aggregateDecl );
        virtual void visit( TypeDecl *typeDecl );
        virtual void visit( TypedefDecl *typeDecl );
        virtual void visit( AsmDecl *asmDecl );

        virtual void visit( CompoundStmt *compoundStmt );
        virtual void visit( ExprStmt *exprStmt );
        virtual void visit( AsmStmt *asmStmt );
        virtual void visit( IfStmt *ifStmt );
        virtual void visit( WhileStmt *whileStmt );
        virtual void visit( ForStmt *forStmt );
        virtual void visit( SwitchStmt *switchStmt );
        virtual void visit( CaseStmt *caseStmt );
        virtual void visit( BranchStmt *branchStmt );
        virtual void visit( ReturnStmt *returnStmt );
        virtual void visit( TryStmt *tryStmt );
        virtual void visit( CatchStmt *catchStmt );
        virtual void visit( FinallyStmt *finallyStmt );
        virtual void visit( NullStmt *nullStmt );
        virtual void visit( DeclStmt *declStmt );
        virtual void visit( ImplicitCtorDtorStmt *impCtorDtorStmt );

        virtual void visit( ApplicationExpr *applicationExpr );
        virtual void visit( UntypedExpr *untypedExpr );
        virtual void visit( NameExpr *nameExpr );
        virtual void visit( CastExpr *castExpr );
        virtual void visit( AddressExpr *addressExpr );
        virtual void visit( LabelAddressExpr *labAddressExpr );
        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( AttrExpr *attrExpr );
        virtual void visit( LogicalExpr *logicalExpr );
        virtual void visit( ConditionalExpr *conditionalExpr );
        virtual void visit( CommaExpr *commaExpr );
        virtual void visit( TypeExpr *typeExpr );
        virtual void visit( AsmExpr *asmExpr );
        virtual void visit( ImplicitCopyCtorExpr *impCpCtorExpr );
        virtual void visit( ConstructorExpr * ctorExpr );
        virtual void visit( CompoundLiteralExpr *compLitExpr );
        virtual void visit( UntypedValofExpr *valofExpr );
        virtual void visit( RangeExpr *rangeExpr );
        virtual void visit( UntypedTupleExpr *tupleExpr );
        virtual void visit( TupleExpr *tupleExpr );
        virtual void visit( TupleIndexExpr *tupleExpr );
        virtual void visit( MemberTupleExpr *tupleExpr );
        virtual void visit( TupleAssignExpr *assignExpr );
        virtual void visit( StmtExpr * stmtExpr );
        virtual void visit( UniqueExpr * uniqueExpr );

        virtual void visit( VoidType *basicType );
        virtual void visit( BasicType *basicType );
        virtual void visit( PointerType *pointerType );
        virtual void visit( ArrayType *arrayType );
        virtual void visit( FunctionType *functionType );
        virtual void visit( StructInstType *aggregateUseType );
        virtual void visit( UnionInstType *aggregateUseType );
        virtual void visit( EnumInstType *aggregateUseType );
        virtual void visit( TraitInstType *aggregateUseType );
        virtual void visit( TypeInstType *aggregateUseType );
        virtual void visit( TupleType *tupleType );
        virtual void visit( TypeofType *typeofType );
        virtual void visit( AttrType *attrType );
        virtual void visit( VarArgsType *varArgsType );
        virtual void visit( ZeroType *zeroType );
        virtual void visit( OneType *oneType );

        virtual void visit( SingleInit *singleInit );
        virtual void visit( ListInit *listInit );
        virtual void visit( ConstructorInit *ctorInit );

        virtual void visit( Subrange *subrange );

        virtual void visit( Constant *constant );
  private:
        virtual void handleAggregateDecl( AggregateDecl *aggregateDecl );
        virtual void handleNamedTypeDecl( NamedTypeDecl *typeDecl );
        virtual void handleReferenceToType( ReferenceToType *aggregateUseType );
};

template< typename TreeType, typename VisitorType >
inline void maybeAccept( TreeType *tree, VisitorType &visitor ) {
        if ( tree ) {
                tree->accept( visitor );
        }
}

template< typename Container, typename VisitorType >
inline void acceptAll( Container &container, VisitorType &visitor ) {
        SemanticError errors;
        for ( typename Container::iterator i = container.begin(); i != container.end(); ++i ) {
                try {
                        if ( *i ) {
                                (*i)->accept( visitor );
                        }
                } catch( SemanticError &e ) {
                        e.set_location( (*i)->location );
                        errors.append( e );
                }
        }
        if ( ! errors.isEmpty() ) {
                throw errors;
        }
}

template< typename Container, typename VisitorType >
void acceptAllFold( Container &container, VisitorType &visitor, VisitorType &around ) {
        SemanticError errors;
        for ( typename Container::iterator i = container.begin(); i != container.end(); ++i ) {
                try {
                        if ( *i ) {
                                VisitorType *v = new VisitorType;
                                (*i)->accept( *v );

                                typename Container::iterator nxt = i; nxt++; // forward_iterator
                                if ( nxt == container.end() )
                                        visitor += *v;
                                else
                                        visitor += *v + around;

                                delete v;
                        } // if
                } catch( SemanticError &e ) {
                        e.set_location( (*i)->location );                       
                        errors.append( e );
                } // try
        } // for
        if ( ! errors.isEmpty() ) {
                throw errors;
        } // if
}

#endif // VISITOR_H

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