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/*******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Yuan Zhang / Beth Tibbitts (IBM Research)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.core.dom.ast;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier.IASTEnumerator;
import org.eclipse.cdt.core.dom.ast.c.ICASTVisitor;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTVisitor;
/**
* Abstract base class for all visitors to traverse ast nodes. <br>
* visit() methods implement a top-down traversal, and <br>
* leave() methods implement a bottom-up traversal. <br>
*
* To visit c- or c++-specific nodes you need to implement {@link ICASTVisitor}
* and/or {@link ICPPASTVisitor} in addition to deriving from this class.
*/
public abstract class ASTVisitor {
/**
* Set this flag to visit names.
*/
public boolean shouldVisitNames = false;
/**
* Set this flag to visit declarations.
*/
public boolean shouldVisitDeclarations = false;
/**
* Set this flag to visit initializers.
*/
public boolean shouldVisitInitializers = false;
/**
* Set this flag to visit parameter declarations.
*/
public boolean shouldVisitParameterDeclarations = false;
/**
* Set this flag to visit declarators.
*/
public boolean shouldVisitDeclarators = false;
/**
* Set this flag to visit declaration specifiers.
*/
public boolean shouldVisitDeclSpecifiers = false;
/**
* Set this flag to visit expressions.
*/
public boolean shouldVisitExpressions = false;
/**
* Set this flag to visit statements.
*/
public boolean shouldVisitStatements = false;
/**
* Set this flag to visit typeids.
*/
public boolean shouldVisitTypeIds = false;
/**
* Set this flag to visit enumerators.
*/
public boolean shouldVisitEnumerators = false;
/**
* Set this flag to visit translation units.
*/
public boolean shouldVisitTranslationUnit = false;
/**
* Set this flag to visit problem nodes.
*/
public boolean shouldVisitProblems = false;
/**
* Set this flag to visit designators of initializers.
* Your visitor needs to implement {@link ICASTVisitor} to make this work.
*/
public boolean shouldVisitDesignators = false;
/**
* Set this flag to visit base specifiers off composite types.
* Your visitor needs to implement {@link ICPPASTVisitor} to make this work.
*/
public boolean shouldVisitBaseSpecifiers = false;
/**
* Set this flag to visit to visit namespaces.
* Your visitor needs to implement {@link ICPPASTVisitor} to make this work.
*/
public boolean shouldVisitNamespaces = false;
/**
* Set this flag to visit template parameters.
* Your visitor needs to implement {@link ICPPASTVisitor} to make this work.
*/
public boolean shouldVisitTemplateParameters = false;
/**
* Skip the traversal of children of this node, don't call leave on this node.
*/
public final static int PROCESS_SKIP = 1;
/**
* Abort the entire traversal.
*/
public final static int PROCESS_ABORT = 2;
/**
* Continue with traversing the children of this node.
*/
public final static int PROCESS_CONTINUE = 3;
// visit methods
public int visit(IASTTranslationUnit tu) {
return PROCESS_CONTINUE;
}
public int visit(IASTName name) {
return PROCESS_CONTINUE;
}
public int visit(IASTDeclaration declaration) {
return PROCESS_CONTINUE;
}
public int visit(IASTInitializer initializer) {
return PROCESS_CONTINUE;
}
public int visit(IASTParameterDeclaration parameterDeclaration) {
return PROCESS_CONTINUE;
}
public int visit(IASTDeclarator declarator) {
return PROCESS_CONTINUE;
}
public int visit(IASTDeclSpecifier declSpec) {
return PROCESS_CONTINUE;
}
public int visit(IASTExpression expression) {
return PROCESS_CONTINUE;
}
public int visit(IASTStatement statement) {
return PROCESS_CONTINUE;
}
public int visit(IASTTypeId typeId) {
return PROCESS_CONTINUE;
}
public int visit(IASTEnumerator enumerator) {
return PROCESS_CONTINUE;
}
public int visit( IASTProblem problem ){
return PROCESS_CONTINUE;
}
public int visit( IASTComment comment){
return PROCESS_CONTINUE;
}
// leave methods
public int leave(IASTTranslationUnit tu) {
return PROCESS_CONTINUE;
}
public int leave(IASTName name) {
return PROCESS_CONTINUE;
}
public int leave(IASTDeclaration declaration) {
return PROCESS_CONTINUE;
}
public int leave(IASTInitializer initializer) {
return PROCESS_CONTINUE;
}
public int leave(IASTParameterDeclaration parameterDeclaration) {
return PROCESS_CONTINUE;
}
public int leave(IASTDeclarator declarator) {
return PROCESS_CONTINUE;
}
public int leave(IASTDeclSpecifier declSpec) {
return PROCESS_CONTINUE;
}
public int leave(IASTExpression expression) {
return PROCESS_CONTINUE;
}
public int leave(IASTStatement statement) {
return PROCESS_CONTINUE;
}
public int leave(IASTTypeId typeId) {
return PROCESS_CONTINUE;
}
public int leave(IASTEnumerator enumerator) {
return PROCESS_CONTINUE;
}
public int leave(IASTProblem problem){
return PROCESS_CONTINUE;
}
public int leave( IASTComment comment){
return PROCESS_CONTINUE;
}
}
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