/*******************************************************************************
* 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.ast.declarations.ModuleDeclaration;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.core.IType;
import org.eclipse.dltk.core.SourceParserUtil;
import org.eclipse.dltk.ti.IContext;
import org.eclipse.dltk.ti.types.IEvaluatedType;
import org.eclipse.php.internal.core.PHPVersion;
import org.eclipse.php.internal.core.compiler.ast.nodes.NamespaceReference;
import org.eclipse.php.internal.core.compiler.ast.parser.ASTUtils;
import org.eclipse.php.internal.core.project.ProjectOptions;
import org.eclipse.php.internal.core.typeinference.PHPClassType;
import org.eclipse.php.internal.core.typeinference.PHPModelUtils;
import org.eclipse.php.internal.core.typeinference.context.MethodContext;
import org.eclipse.php.internal.core.util.text.TextSequence;
/**
* This context represents state when staying in a class static member
* completion (after paamayim-nekudotaim) <br/>
* Examples:
*
* <pre>
* 1. A::|
* 2. $lsb::|
* 3. A::$|
* etc...
* </pre>
*
* @author michael
*/
public class ClassStaticMemberContext extends ClassMemberContext {
private boolean isParent;
private boolean isDirectParent;
private boolean isSelf;
private boolean isDirectSelf;
private boolean isFunctionParameterContext = false;
public boolean isValid(ISourceModule sourceModule, int offset,
CompletionRequestor requestor) {
PHPVersion phpVersion = ProjectOptions.getPhpVersion(sourceModule);
if (!super.isValid(sourceModule, offset, requestor)) {
return false;
}
if (getTriggerType() != Trigger.CLASS) {
return false;
}
// if method parameter context, return false
FunctionParameterDefaultValueContext parameterDefaultValueContext = new FunctionParameterDefaultValueContext();
if (parameterDefaultValueContext.isValid(sourceModule, offset,
requestor)) {
this.isFunctionParameterContext = true;
}
int elementStart = getElementStart();
int lhsIndex = elementStart - "parent".length() //$NON-NLS-1$
- getTriggerType().getName().length();
if (lhsIndex >= 0) {
TextSequence statementText = getStatementText();
String parentText = statementText.subSequence(lhsIndex,
elementStart - getTriggerType().getName().length())
.toString();
if (parentText.equals("parent") || (PHPVersion.PHP5_4.isLessThan(phpVersion) && parentText.toLowerCase().equals("parent"))) { //$NON-NLS-1$ //$NON-NLS-2$
isParent = isDirectParent = true;
}
}
lhsIndex = elementStart - "self".length() //$NON-NLS-1$
- getTriggerType().getName().length();
if (lhsIndex >= 0) {
TextSequence statementText = getStatementText();
String parentText = statementText.subSequence(lhsIndex,
elementStart - getTriggerType().getName().length())
.toString();
if (parentText.equals("self") || (PHPVersion.PHP5_4.isLessThan(phpVersion) && parentText.toLowerCase().equals("self"))) { //$NON-NLS-1$ //$NON-NLS-2$
isSelf = isDirectSelf = true;
}
}
if (!isParent || !isSelf) {
IType[] types = getLhsTypes();
if (types != null && types.length > 0) {
ModuleDeclaration moduleDeclaration = SourceParserUtil
.getModuleDeclaration(sourceModule);
if (moduleDeclaration != null) {
IContext context = ASTUtils.findContext(sourceModule,
moduleDeclaration, offset);
if (context instanceof MethodContext) {
IEvaluatedType instanceType = ((MethodContext) context)
.getInstanceType();
if (instanceType instanceof PHPClassType) {
PHPClassType classType = (PHPClassType) instanceType;
String typeName = classType.getTypeName();
String namespace = classType.getNamespace();
if (namespace != null && namespace.length() > 0) {
int i = typeName
.lastIndexOf(NamespaceReference.NAMESPACE_SEPARATOR);
if (i != -1) {
typeName = typeName.substring(i + 1);
}
if (namespace.charAt(0) == NamespaceReference.NAMESPACE_SEPARATOR) {
namespace = namespace.substring(1);
}
IType currentNamespace = PHPModelUtils
.getCurrentNamespace(types[0]);
if (!isParent) {
if (currentNamespace != null
&& types.length >= 2) {
IType parentType = types[1];
isParent = namespace
.equals(currentNamespace
.getElementName())
&& typeName.equals(parentType
.getElementName());
}
}
if (!isSelf) {
if (currentNamespace != null) {
isSelf = namespace
.equals(currentNamespace
.getElementName())
&& typeName.equals(types[0]
.getElementName());
}
}
} else {
if (!isParent) {
if (types.length >= 2) {
IType parentType = types[1];
isParent = typeName.equals(parentType
.getElementName());
}
}
if (!isSelf) {
isSelf = typeName.equals(types[0]
.getElementName());
}
}
}
}
}
}
}
return true;
}
/**
* Returns whether the left hand side expression has the type of parent
* class
*/
public boolean isParent() {
return isParent;
}
/**
* Returns whether the left hand side expression has the type of this class
*/
public boolean isSelf() {
return isSelf;
}
/**
* Returns whether the left hand side is a word 'parent'
*/
public boolean isDirectParent() {
return isDirectParent;
}
/**
* Returns whether the left hand side is a word 'self'
*/
public boolean isDirectSelf() {
return isDirectSelf;
}
/**
* @return Returns whether the self:: is in function parameter
*/
public boolean isFunctionParameterContext() {
return isFunctionParameterContext;
}
}