/*******************************************************************************
* 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.Arrays;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.dltk.ast.Modifiers;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.IField;
import org.eclipse.dltk.core.IType;
import org.eclipse.dltk.core.ITypeHierarchy;
import org.eclipse.dltk.internal.core.ModelElement;
import org.eclipse.dltk.internal.core.SourceRange;
import org.eclipse.dltk.internal.core.hierarchy.FakeType;
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.Logger;
import org.eclipse.php.internal.core.PHPCorePlugin;
import org.eclipse.php.internal.core.PHPVersion;
import org.eclipse.php.internal.core.codeassist.ICompletionReporter;
import org.eclipse.php.internal.core.codeassist.contexts.ClassMemberContext;
import org.eclipse.php.internal.core.codeassist.contexts.ClassMemberContext.Trigger;
import org.eclipse.php.internal.core.codeassist.contexts.ClassStaticMemberContext;
import org.eclipse.php.internal.core.documentModel.parser.regions.PHPRegionTypes;
import org.eclipse.php.internal.core.typeinference.FakeField;
import org.eclipse.php.internal.core.typeinference.PHPModelUtils;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
/**
* This strategy completes class constants and variables.
*
* @author michael
*/
public class ClassFieldsStrategy extends ClassMembersStrategy {
private static final String CLASS_KEYWORD = "class"; //$NON-NLS-1$
private static final String STD_CLASS = "stdClass"; //$NON-NLS-1$
public ClassFieldsStrategy(ICompletionContext context,
IElementFilter elementFilter) {
super(context, elementFilter);
}
public ClassFieldsStrategy(ICompletionContext context) {
super(context);
}
public void apply(ICompletionReporter reporter) throws BadLocationException {
ICompletionContext context = getContext();
if (!(context instanceof ClassMemberContext)) {
return;
}
ClassMemberContext concreteContext = (ClassMemberContext) context;
CompletionRequestor requestor = concreteContext
.getCompletionRequestor();
String prefix = concreteContext.getPrefix();
SourceRange replaceRange = getReplacementRange(concreteContext);
List<IField> result = new LinkedList<IField>();
for (IType type : concreteContext.getLhsTypes()) {
try {
ITypeHierarchy hierarchy = getCompanion()
.getSuperTypeHierarchy(type, null);
IField[] fields = null;
if (concreteContext instanceof ClassStaticMemberContext
&& concreteContext.getTriggerType() == Trigger.CLASS
&& ((ClassStaticMemberContext) concreteContext)
.isParent()) {
List<IField> superTypes = new ArrayList<IField>();
for (IType currType : hierarchy.getAllSupertypes(type)) {
superTypes.addAll(Arrays.asList(PHPModelUtils
.getTypeField(currType, prefix,
requestor.isContextInformationMode())));
}
fields = superTypes.toArray(new IField[superTypes.size()]);
} else {
fields = PHPModelUtils.getTypeHierarchyField(type,
hierarchy, prefix,
requestor.isContextInformationMode(), null);
}
for (IField field : removeOverriddenElements(Arrays
.asList(fields))) {
if (concreteContext.isInUseTraitStatement()) {
result.add(field);
} else if (!isFiltered(field, type, concreteContext)) {
result.add(field);
}
}
} catch (CoreException e) {
PHPCorePlugin.log(e);
}
}
if (concreteContext instanceof ClassStaticMemberContext
&& concreteContext.getTriggerType() == Trigger.CLASS
&& !concreteContext.isInUseTraitStatement()
&& PHPVersion.PHP5_4
.isLessThan(concreteContext.getPhpVersion())
&& (CLASS_KEYWORD.startsWith(prefix.toLowerCase()) || CLASS_KEYWORD
.equals(prefix.toLowerCase()))) {
try {
ITextRegion phpToken = concreteContext.getPhpScriptRegion()
.getPhpToken(
concreteContext.getPHPToken().getStart() - 1);
if (phpToken != null
&& PHPRegionTypes.PHP_PAAMAYIM_NEKUDOTAYIM
.equals(phpToken.getType())) {
phpToken = concreteContext
.getPHPToken(phpToken.getStart() - 1);
}
if (phpToken != null && isStaticCall(phpToken.getType())) {
result.add(new FakeField(new FakeType(
(ModelElement) concreteContext.getSourceModule(),
STD_CLASS), CLASS_KEYWORD, Modifiers.AccConstant
| Modifiers.AccPublic));
}
} catch (BadLocationException e) {
Logger.logException(e);
}
}
for (IField field : result) {
reporter.reportField(field, getSuffix(), replaceRange,
concreteContext.getTriggerType() == Trigger.OBJECT);
}
}
private boolean isStaticCall(String type) {
return PHPRegionTypes.PHP_STRING.equals(type)
|| PHPRegionTypes.PHP_PARENT.equals(type)
|| PHPRegionTypes.PHP_SELF.equals(type)
|| PHPRegionTypes.PHP_NS_SEPARATOR.equals(type);
}
protected boolean showNonStaticMembers(ClassMemberContext context) {
return super.showNonStaticMembers(context) && !isParentCall(context);
}
public String getSuffix() {
return ""; //$NON-NLS-1$
}
}