/*******************************************************************************
* 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.contexts;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.php.internal.core.PHPCorePlugin;
import org.eclipse.php.internal.core.documentModel.partitioner.PHPPartitionTypes;
import org.eclipse.php.internal.core.util.text.PHPTextSequenceUtilities;
import org.eclipse.php.internal.core.util.text.TextSequence;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
/**
* This context represents the state of staying inside an array key. <br/>
* Examples:
*
* <pre>
* 1. $array[|]
* 2. $array['|']
* 3. $array["|"]
* </pre>
*
* @author michael
*/
public class ArrayKeyContext extends AbstractCompletionContext {
private String arrayVarName;
private boolean hasQuotes;
/**
* Returns array variable name
*
* @return
*/
public String getArrayVarName() {
return arrayVarName;
}
/**
* Returns whether there are quotes around array key
*
* @return
*/
public boolean hasQuotes() {
return hasQuotes;
}
public boolean isValid(ISourceModule sourceModule, int offset,
CompletionRequestor requestor) {
if (!super.isValid(sourceModule, offset, requestor)) {
return false;
}
try {
ITextRegion phpToken = getPHPToken();
TextSequence statementText = getStatementText();
int length = statementText.length();
int endPosition = PHPTextSequenceUtilities.readBackwardSpaces(
statementText, length);
int startPosition = PHPTextSequenceUtilities
.readIdentifierStartIndex(getPhpVersion(), statementText,
endPosition, true);
hasQuotes = false;
if (PHPPartitionTypes.isPHPQuotesState(phpToken.getType())) {
hasQuotes = true;
endPosition = PHPTextSequenceUtilities.readBackwardSpaces(
statementText, startPosition);
if (endPosition == 0
|| (statementText.charAt(endPosition - 1) != '\"' && statementText
.charAt(endPosition - 1) != '\'')) {
return false;
}
startPosition = endPosition - 1;
}
endPosition = PHPTextSequenceUtilities.readBackwardSpaces(
statementText, startPosition);
if (endPosition > 0
&& (statementText.charAt(endPosition - 1) == '\"' || statementText
.charAt(endPosition - 1) == '\'')) {
hasQuotes = true;
startPosition = endPosition - 1;
endPosition = PHPTextSequenceUtilities.readBackwardSpaces(
statementText, startPosition);
}
if (endPosition == 0
|| statementText.charAt(endPosition - 1) != '[') {
return false;
}
endPosition = PHPTextSequenceUtilities.readBackwardSpaces(
statementText, endPosition - 1);
startPosition = PHPTextSequenceUtilities.readIdentifierStartIndex(
getPhpVersion(), statementText, endPosition, true);
arrayVarName = statementText
.subSequence(startPosition, endPosition).toString();
if (!arrayVarName.startsWith("$")) { //$NON-NLS-1$
return false;
}
} catch (BadLocationException e) {
PHPCorePlugin.log(e);
}
return true;
}
public int getPrefixEnd() throws BadLocationException {
int prefixEnd = super.getPrefixEnd();
if (hasQuotes) {
--prefixEnd;
}
return prefixEnd;
}
}