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/*******************************************************************************
* Copyright (c) 2008 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser;
import org.eclipse.cdt.core.dom.ast.IASTArrayDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTArrayModifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTInitializer;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTPointerOperator;
import org.eclipse.cdt.core.dom.ast.IASTProblem;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.IASTTypeId;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier.IASTEnumerator;
import org.eclipse.cdt.core.dom.ast.c.ICASTDesignator;
import org.eclipse.cdt.core.dom.ast.c.ICASTVisitor;
import org.eclipse.cdt.core.dom.ast.cpp.CPPASTVisitor;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCatchHandler;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTConstructorChainInitializer;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionTryBlockDeclarator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTNamespaceDefinition;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateParameter;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTVisitor;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier.ICPPASTBaseSpecifier;
public class FindNodeForOffsetAction extends CPPASTVisitor implements ICASTVisitor, ICPPASTVisitor {
private IASTNode fFoundNode = null;
private int fOffset = 0;
private int fLength = 0;
public FindNodeForOffsetAction(int offset, int length) {
fOffset = offset;
fLength = length;
shouldVisitNames = true;
shouldVisitDeclarations = true;
shouldVisitInitializers = true;
shouldVisitParameterDeclarations = true;
shouldVisitDeclarators = true;
shouldVisitDeclSpecifiers = true;
shouldVisitDesignators = true;
shouldVisitEnumerators = true;
shouldVisitExpressions = true;
shouldVisitStatements = true;
shouldVisitTypeIds = true;
shouldVisitEnumerators = true;
shouldVisitBaseSpecifiers = true;
shouldVisitNamespaces = true;
shouldVisitTemplateParameters= true;
shouldVisitTranslationUnit= true;
}
public int processNode(IASTNode node) {
if (fFoundNode != null)
return PROCESS_ABORT;
if (node instanceof ASTNode) {
final int offset = ((ASTNode) node).getOffset();
final int length = ((ASTNode) node).getLength();
if (offset == fOffset && length == fLength) {
fFoundNode = node;
return PROCESS_ABORT;
}
// skip the rest of this node if the selection is outside of its
// bounds
if (fOffset > offset + length)
return PROCESS_SKIP;
}
return PROCESS_CONTINUE;
}
@Override
public int visit(IASTDeclaration declaration) {
// use declarations to determine if the search has gone past the
// offset (i.e. don't know the order the visitor visits the nodes)
if (declaration instanceof ASTNode
&& ((ASTNode) declaration).getOffset() > fOffset)
return PROCESS_ABORT;
return processNode(declaration);
}
@Override
public int visit(IASTDeclarator declarator) {
int ret = processNode(declarator);
IASTPointerOperator[] ops = declarator.getPointerOperators();
for (int i = 0; i < ops.length; i++)
processNode(ops[i]);
if (declarator instanceof IASTArrayDeclarator) {
IASTArrayModifier[] mods = ((IASTArrayDeclarator) declarator)
.getArrayModifiers();
for (int i = 0; i < mods.length; i++)
processNode(mods[i]);
}
else if (declarator instanceof ICPPASTFunctionDeclarator) {
ICPPASTConstructorChainInitializer[] chainInit = ((ICPPASTFunctionDeclarator)declarator).getConstructorChain();
for(int i=0; i<chainInit.length; i++) {
processNode(chainInit[i]);
}
if( declarator instanceof ICPPASTFunctionTryBlockDeclarator ){
ICPPASTCatchHandler [] catchHandlers = ((ICPPASTFunctionTryBlockDeclarator)declarator).getCatchHandlers();
for( int i = 0; i < catchHandlers.length; i++ ){
processNode(catchHandlers[i]);
}
}
}
return ret;
}
@Override
public int visit(IASTDeclSpecifier declSpec) {
return processNode(declSpec);
}
@Override
public int visit(IASTEnumerator enumerator) {
return processNode(enumerator);
}
@Override
public int visit(IASTExpression expression) {
return processNode(expression);
}
@Override
public int visit(IASTInitializer initializer) {
return processNode(initializer);
}
@Override
public int visit(IASTName name) {
if (name.toString() != null)
return processNode(name);
return PROCESS_CONTINUE;
}
@Override
public int visit(IASTParameterDeclaration parameterDeclaration) {
return processNode(parameterDeclaration);
}
@Override
public int visit(IASTStatement statement) {
return processNode(statement);
}
@Override
public int visit(IASTTypeId typeId) {
return processNode(typeId);
}
@Override
public int visit(ICPPASTBaseSpecifier baseSpecifier) {
return processNode(baseSpecifier);
}
@Override
public int visit(ICPPASTNamespaceDefinition namespaceDefinition) {
return processNode(namespaceDefinition);
}
@Override
public int visit(ICPPASTTemplateParameter templateParameter) {
return processNode(templateParameter);
}
@Override
public int visit(IASTProblem problem) {
return processNode(problem);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.internal.core.dom.parser.c.CVisitor.CBaseVisitorAction#processDesignator(org.eclipse.cdt.core.dom.ast.c.ICASTDesignator)
*/
public int visit(ICASTDesignator designator) {
return processNode(designator);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.c.ICASTVisitor#leave(org.eclipse.cdt.core.dom.ast.c.ICASTDesignator)
*/
public int leave(ICASTDesignator designator) {
return PROCESS_CONTINUE;
}
@Override
public int visit(IASTTranslationUnit tu) {
return processNode(tu);
}
public IASTNode getNode() {
return fFoundNode;
}
}
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