/*******************************************************************************
* 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.typeinference.evaluators;
import org.eclipse.dltk.ast.expressions.Expression;
import org.eclipse.dltk.ast.references.TypeReference;
import org.eclipse.dltk.evaluation.types.UnknownType;
import org.eclipse.dltk.ti.GoalState;
import org.eclipse.dltk.ti.ISourceModuleContext;
import org.eclipse.dltk.ti.goals.ExpressionTypeGoal;
import org.eclipse.dltk.ti.goals.GoalEvaluator;
import org.eclipse.dltk.ti.goals.IGoal;
import org.eclipse.dltk.ti.types.IEvaluatedType;
import org.eclipse.php.internal.core.PHPVersion;
import org.eclipse.php.internal.core.compiler.ast.nodes.ClassInstanceCreation;
import org.eclipse.php.internal.core.project.ProjectOptions;
import org.eclipse.php.internal.core.typeinference.context.MethodContext;
public class InstanceCreationEvaluator extends GoalEvaluator {
private IEvaluatedType result;
public InstanceCreationEvaluator(IGoal goal) {
super(goal);
}
public IGoal[] init() {
ExpressionTypeGoal typedGoal = (ExpressionTypeGoal) goal;
ClassInstanceCreation expression = (ClassInstanceCreation) typedGoal
.getExpression();
Expression className = expression.getClassName();
if ((className instanceof TypeReference)) {
if (isSelf((TypeReference) className)
&& (goal.getContext() instanceof MethodContext)) {
MethodContext methodContext = (MethodContext) goal.getContext();
result = methodContext.getInstanceType();
return IGoal.NO_GOALS;
} else {
return new IGoal[] { new ExpressionTypeGoal(goal.getContext(),
className) };
}
}
result = UnknownType.INSTANCE;
return IGoal.NO_GOALS;
}
public Object produceResult() {
return result;
}
public IGoal[] subGoalDone(IGoal subgoal, Object result, GoalState state) {
this.result = (IEvaluatedType) result;
return IGoal.NO_GOALS;
}
private boolean isSelf(TypeReference className) {
String name = className.getName();
if (goal.getContext() instanceof ISourceModuleContext
&& PHPVersion.PHP5_4.isLessThan(ProjectOptions
.getPhpVersion(((ISourceModuleContext) goal
.getContext()).getSourceModule()))) {
name = name.toLowerCase();
}
return "self".equals(name); //$NON-NLS-1$
}
}