#include <cassert>

#include "SynTree.h"
#include "SemanticError.h"

#ifndef SYNTREE_MUTATOR_H
#define SYNTREE_MUTATOR_H

class Mutator {
  protected:
    Mutator();
    virtual ~Mutator();
  public:
    virtual ObjectDecl* mutate( ObjectDecl *objectDecl );
    virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
    virtual Declaration* mutate( StructDecl *aggregateDecl );
    virtual Declaration* mutate( UnionDecl *aggregateDecl );
    virtual Declaration* mutate( EnumDecl *aggregateDecl );
    virtual Declaration* mutate( ContextDecl *aggregateDecl );
    virtual TypeDecl* mutate( TypeDecl *typeDecl );
    virtual Declaration* mutate( TypedefDecl *typeDecl );

    virtual CompoundStmt* mutate( CompoundStmt *compoundStmt );
    virtual Statement* mutate( ExprStmt *exprStmt );
    virtual Statement* mutate( IfStmt *ifStmt );
    virtual Statement* mutate( WhileStmt *whileStmt );
    virtual Statement* mutate( ForStmt *forStmt );
    virtual Statement* mutate( SwitchStmt *switchStmt );
    virtual Statement* mutate( ChooseStmt *chooseStmt );
    virtual Statement* mutate( FallthruStmt *fallthruStmt );
    virtual Statement* mutate( CaseStmt *caseStmt );
    virtual Statement* mutate( BranchStmt *branchStmt );
    virtual Statement* mutate( ReturnStmt *returnStmt );
    virtual Statement* mutate( TryStmt *returnStmt );
    virtual Statement* mutate( CatchStmt *catchStmt );
    virtual Statement* mutate( FinallyStmt *catchStmt );
    virtual NullStmt* mutate( NullStmt *nullStmt );
    virtual Statement* mutate( DeclStmt *declStmt );

    virtual Expression* mutate( ApplicationExpr *applicationExpr );
    virtual Expression* mutate( UntypedExpr *untypedExpr );
    virtual Expression* mutate( NameExpr *nameExpr );
    virtual Expression* mutate( AddressExpr *castExpr );
    virtual Expression* mutate( LabelAddressExpr *labAddressExpr );
    virtual Expression* mutate( CastExpr *castExpr );
    virtual Expression* mutate( UntypedMemberExpr *memberExpr );
    virtual Expression* mutate( MemberExpr *memberExpr );
    virtual Expression* mutate( VariableExpr *variableExpr );
    virtual Expression* mutate( ConstantExpr *constantExpr ); 
    virtual Expression* mutate( SizeofExpr *sizeofExpr );
    virtual Expression* mutate( AttrExpr *attrExpr );
    virtual Expression* mutate( LogicalExpr *logicalExpr );
    virtual Expression* mutate( ConditionalExpr *conditionalExpr );
    virtual Expression* mutate( CommaExpr *commaExpr );
    virtual Expression* mutate( TupleExpr *tupleExpr );
    virtual Expression* mutate( SolvedTupleExpr *tupleExpr );
    virtual Expression* mutate( TypeExpr *typeExpr );
    virtual Expression* mutate( UntypedValofExpr *valofExpr );

    virtual Type* mutate( VoidType *basicType );
    virtual Type* mutate( BasicType *basicType );
    virtual Type* mutate( PointerType *pointerType );
    virtual Type* mutate( ArrayType *arrayType );
    virtual Type* mutate( FunctionType *functionType );
    virtual Type* mutate( StructInstType *aggregateUseType );
    virtual Type* mutate( UnionInstType *aggregateUseType );
    virtual Type* mutate( EnumInstType *aggregateUseType );
    virtual Type* mutate( ContextInstType *aggregateUseType );
    virtual Type* mutate( TypeInstType *aggregateUseType );
    virtual Type* mutate( TupleType *tupleType );
    virtual Type* mutate( TypeofType *typeofType );
    virtual Type* mutate( AttrType *attrType );

    virtual Initializer* mutate( SingleInit *singleInit );
    virtual Initializer* mutate( ListInit *listInit );

    virtual Subrange *mutate( Subrange *subrange );

    virtual Constant *mutate( Constant *constant );
  private:
    virtual Declaration* handleAggregateDecl(AggregateDecl *aggregateDecl );
    virtual Declaration* handleNamedTypeDecl(NamedTypeDecl *typeDecl );
    virtual Type* handleReferenceToType(ReferenceToType *aggregateUseType );
};

template< typename TreeType, typename MutatorType >
inline TreeType *maybeMutate( TreeType *tree, MutatorType &mutator ) {
    if ( tree ) {
	TreeType *newnode = dynamic_cast< TreeType* >( tree->acceptMutator( mutator ) );
	assert( newnode );
	return newnode;
///	    return tree->acceptMutator( mutator );
    } else {
	return 0;
    }
}

template< typename Container, typename MutatorType >
inline void mutateAll( Container &container, MutatorType &mutator ) {
    SemanticError errors;
    for ( typename Container::iterator i = container.begin(); i != container.end(); ++i ) {
	try {
	    if ( *i ) {
///		    *i = (*i)->acceptMutator( mutator );
		*i = dynamic_cast< typename Container::value_type >( (*i)->acceptMutator( mutator ) );
		assert( *i );
	    }
	} catch( SemanticError &e ) {
	    errors.append( e );
	}
    }
    if ( !errors.isEmpty() ) {
	throw errors;
    }
}

#endif // SYNTREE_MUTATOR_H

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