/*******************************************************************************
* 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.HashSet;
import java.util.Set;
import org.eclipse.dltk.ast.declarations.ModuleDeclaration;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.SourceParserUtil;
import org.eclipse.dltk.internal.core.ModelElement;
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.ProposalExtraInfo;
import org.eclipse.php.internal.core.codeassist.contexts.ArrayKeyContext;
import org.eclipse.php.internal.core.compiler.ast.nodes.*;
import org.eclipse.php.internal.core.compiler.ast.parser.ASTUtils;
import org.eclipse.php.internal.core.compiler.ast.visitor.PHPASTVisitor;
import org.eclipse.php.internal.core.typeinference.FakeField;
/**
* This strategy completes builtin array keys, like in _SERVER.
*
* @author michael
*/
public class ArrayStringKeysStrategy extends AbstractCompletionStrategy {
public ArrayStringKeysStrategy(ICompletionContext context,
IElementFilter elementFilter) {
super(context, elementFilter);
}
public ArrayStringKeysStrategy(ICompletionContext context) {
super(context);
}
public void apply(ICompletionReporter reporter) throws BadLocationException {
ICompletionContext context = getContext();
if (!(context instanceof ArrayKeyContext)) {
return;
}
SourceRange replaceRange = getReplacementRange(context);
ArrayKeyContext arrayContext = (ArrayKeyContext) context;
boolean endsWithQuota = arrayContext.getNextChar() == '\''
|| arrayContext.getNextChar() == '\"';
if (arrayContext.hasQuotes() && !(endsWithQuota)) {
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=401766
replaceRange = new SourceRange(replaceRange.getOffset(),
replaceRange.getLength() + 1);
}
CompletionRequestor requestor = arrayContext.getCompletionRequestor();
String prefix = arrayContext.getPrefix();
ModuleDeclaration moduleDeclaration = SourceParserUtil
.getModuleDeclaration(arrayContext.getSourceModule());
try {
ArrayKeyFinder finder = new ArrayKeyFinder(prefix,
arrayContext.getOffset());
moduleDeclaration.traverse(finder);
Set<String> names = finder.getNames();
int extraObject = ProposalExtraInfo.DEFAULT;
if (!arrayContext.hasQuotes()) {
extraObject |= ProposalExtraInfo.ADD_QUOTES;
}
for (String name : names) {
if (!requestor.isContextInformationMode()) {
reporter.reportField(new FakeField(
(ModelElement) arrayContext.getSourceModule(),
name, 0, 0), "", replaceRange, false, 0, //$NON-NLS-1$
extraObject); // NON-NLS-1
}
}
} catch (Exception e) {
}
}
protected void reportVariables(ICompletionReporter reporter,
ArrayKeyContext context, String[] variables, String prefix)
throws BadLocationException {
reportVariables(reporter, context, variables, prefix, false);
}
protected void reportVariables(ICompletionReporter reporter,
ArrayKeyContext context, String[] variables, String prefix,
boolean removeDollar) throws BadLocationException {
CompletionRequestor requestor = context.getCompletionRequestor();
SourceRange replaceRange = getReplacementRange(context);
for (String variable : variables) {
if (removeDollar) {
variable = variable.substring(1);
}
if (variable.startsWith(prefix)) {
if (!requestor.isContextInformationMode()
|| variable.length() == prefix.length()) {
reporter.reportField(
new FakeField((ModelElement) context
.getSourceModule(), variable, 0, 0), "", //$NON-NLS-1$
replaceRange, false); // NON-NLS-1
}
}
}
}
class ArrayKeyFinder extends PHPASTVisitor {
private Set<String> names = new HashSet<String>();
private String prefix;
private int ignoredOffset;
public ArrayKeyFinder(String prefix, int ignoredOffset) {
this.prefix = prefix;
this.ignoredOffset = ignoredOffset;
}
public boolean visit(ArrayCreation s) throws Exception {
return super.visit(s);
}
public boolean visit(ArrayElement s) throws Exception {
if (s.getKey() instanceof Scalar) {
Scalar scalar = (Scalar) s.getKey();
if (scalar.getScalarType() == Scalar.TYPE_STRING) {
String key = ASTUtils.stripQuotes(scalar.getValue());
if (!scalar.getValue().equals(key)
&& key.length() > 0
&& key.toLowerCase().startsWith(
prefix.toLowerCase())) {
names.add(key);
}
}
}
return super.visit(s);
}
public boolean visit(ArrayVariableReference s) throws Exception {
if (s.start() < ignoredOffset && s.end() > ignoredOffset) {
return super.visit(s);
}
if (s.getIndex() instanceof Scalar) {
Scalar scalar = (Scalar) s.getIndex();
if (scalar.getScalarType() == Scalar.TYPE_STRING) {
String key = ASTUtils.stripQuotes(scalar.getValue());
if (!scalar.getValue().equals(key)
&& key.length() > 0
&& key.toLowerCase().startsWith(
prefix.toLowerCase())) {
names.add(key);
}
}
}
return super.visit(s);
}
public boolean visit(ReflectionArrayVariableReference s)
throws Exception {
if (s.getIndex() instanceof Scalar) {
Scalar scalar = (Scalar) s.getIndex();
if (scalar.getScalarType() == Scalar.TYPE_STRING) {
String key = ASTUtils.stripQuotes(scalar.getValue());
if (!scalar.getValue().equals(key)
&& key.length() > 0
&& key.toLowerCase().startsWith(
prefix.toLowerCase())) {
names.add(key);
}
}
}
return super.visit(s);
}
public boolean visit(PHPArrayDereferenceList s) throws Exception {
return super.visit(s);
}
public Set<String> getNames() {
return names;
}
}
}