/*******************************************************************************
* Copyright (c) 2009 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
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.core.codeassist.strategies;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.dltk.ast.ASTNode;
import org.eclipse.dltk.ast.declarations.MethodDeclaration;
import org.eclipse.dltk.ast.declarations.ModuleDeclaration;
import org.eclipse.dltk.ast.declarations.TypeDeclaration;
import org.eclipse.dltk.core.SourceParserUtil;
import org.eclipse.dltk.internal.core.SourceRange;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.php.core.codeassist.ICompletionContext;
import org.eclipse.php.core.codeassist.IElementFilter;
import org.eclipse.php.internal.core.codeassist.ICompletionReporter;
import org.eclipse.php.internal.core.codeassist.contexts.GotoStatementContext;
import org.eclipse.php.internal.core.compiler.ast.nodes.GotoLabel;
import org.eclipse.php.internal.core.compiler.ast.visitor.PHPASTVisitor;
import org.eclipse.php.internal.core.typeinference.PHPModelUtils;
/**
* This strategy completes labels for goto statement
*/
public class GotoStatementStrategy extends GlobalElementStrategy {
public GotoStatementStrategy(ICompletionContext context,
IElementFilter elementFilter) {
super(context, elementFilter);
}
public GotoStatementStrategy(ICompletionContext context) {
super(context);
}
public void apply(ICompletionReporter reporter) throws BadLocationException {
ICompletionContext context = getContext();
GotoStatementContext gotoStatementContext = (GotoStatementContext) context;
String prefix = gotoStatementContext.getPrefix();
if (prefix.startsWith("$")) { //$NON-NLS-1$
return;
}
try {
ModuleDeclaration rootNode = SourceParserUtil
.getModuleDeclaration(gotoStatementContext
.getSourceModule());
ASTNode node;
if (gotoStatementContext.getCurrentElement() != null) {
node = PHPModelUtils.getNodeByElement(rootNode,
gotoStatementContext.getCurrentElement());
} else {
node = rootNode;
}
GotoStatementVisitor vistor = new GotoStatementVisitor(node, prefix);
node.traverse(vistor);
List<String> getoLabels = vistor.getGotoLabels();
SourceRange range = getReplacementRange(context);
for (String label : getoLabels) {
reporter.reportKeyword(label, "", range); //$NON-NLS-1$
}
} catch (Exception e) {
}
}
private class GotoStatementVisitor extends PHPASTVisitor {
private List<String> getoLabels = new ArrayList<String>();
private ASTNode node;
private String prefix;
public GotoStatementVisitor(ASTNode node, String prefix) {
this.node = node;
this.prefix = prefix.toLowerCase();
}
public boolean visit(GotoLabel s) throws Exception {
if (s.getLabel().toLowerCase().startsWith(prefix)) {
getoLabels.add(s.getLabel());
}
return false;
}
public boolean visit(TypeDeclaration s) throws Exception {
if (node != s) {
return false;
}
return true;
}
public boolean visit(MethodDeclaration s) throws Exception {
if (node != s) {
return false;
}
return true;
}
public List<String> getGotoLabels() {
return getoLabels;
}
}
}