/*******************************************************************************
* 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.context;
import org.eclipse.dltk.ast.declarations.MethodDeclaration;
import org.eclipse.dltk.ast.declarations.ModuleDeclaration;
import org.eclipse.dltk.core.DLTKLanguageManager;
import org.eclipse.dltk.core.IDLTKLanguageToolkit;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.core.IType;
import org.eclipse.dltk.ti.IContext;
import org.eclipse.dltk.ti.IInstanceContext;
import org.eclipse.dltk.ti.ISourceModuleContext;
import org.eclipse.dltk.ti.types.IEvaluatedType;
import org.eclipse.php.internal.core.typeinference.IModelAccessCache;
import org.eclipse.php.internal.core.typeinference.PHPThisClassType;
/**
* This is a PHP method or function context.
*
* @author michael
*/
public class MethodContext implements IContext, INamespaceContext,
IArgumentsContext, IInstanceContext, ISourceModuleContext,
IModelCacheContext {
private final ISourceModule sourceModule;
private final ModuleDeclaration rootNode;
private final MethodDeclaration methodNode;
private final String[] argNames;
private final IEvaluatedType[] argTypes;
private IEvaluatedType instanceType;
private String namespaceName;
private IModelAccessCache cache;
private IType type;
public MethodContext(IContext parent, ISourceModule sourceModule,
ModuleDeclaration rootNode, MethodDeclaration methodNode,
String[] argNames, IEvaluatedType[] argTypes) {
this.sourceModule = sourceModule;
this.rootNode = rootNode;
this.methodNode = methodNode;
this.argNames = argNames;
this.argTypes = argTypes;
if (parent instanceof IInstanceContext) {
instanceType = ((IInstanceContext) parent).getInstanceType();
}
if (parent instanceof INamespaceContext) {
namespaceName = ((INamespaceContext) parent).getNamespace();
}
}
public IEvaluatedType getArgumentType(String name) {
for (int i = 0; i < argNames.length; i++) {
String argName = argNames[i];
if (name.equals(argName)) {
if (i < argTypes.length) {
return argTypes[i];
} else {
return null;
}
}
}
return null;
}
/**
* Returns {@link IEvaluatedType} for the declaring type or
* <code>null</code> if this is a function context
*/
public IEvaluatedType getInstanceType() {
return instanceType;
}
/**
* Returns namespace where the method was declared or <code>null</code> if
* this is a global scope method/function
*/
public String getNamespace() {
return namespaceName;
}
/**
* Returns root AST node of the file where the method is declared
*/
public ModuleDeclaration getRootNode() {
return rootNode;
}
/**
* Returns the file {@link ISourceModule} where the method is declared
*/
public ISourceModule getSourceModule() {
return sourceModule;
}
/**
* Returns AST node of the method declaration
*/
public MethodDeclaration getMethodNode() {
return methodNode;
}
public String getLangNature() {
if (sourceModule != null) {
IDLTKLanguageToolkit languageToolkit = DLTKLanguageManager
.getLanguageToolkit(sourceModule);
if (languageToolkit != null) {
return languageToolkit.getNatureId();
}
}
return null;
}
public IModelAccessCache getCache() {
return cache;
}
public void setCache(IModelAccessCache cache) {
this.cache = cache;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((instanceType == null) ? 0 : instanceType.hashCode());
result = prime * result
+ ((methodNode == null) ? 0 : methodNode.hashCode());
result = prime * result
+ ((namespaceName == null) ? 0 : namespaceName.hashCode());
result = prime * result
+ ((sourceModule == null) ? 0 : sourceModule.hashCode());
return result;
}
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MethodContext other = (MethodContext) obj;
if (instanceType == null) {
if (other.instanceType != null)
return false;
} else if (!instanceType.equals(other.instanceType))
return false;
if (methodNode == null) {
if (other.methodNode != null)
return false;
} else if (!methodNode.equals(other.methodNode))
return false;
if (namespaceName == null) {
if (other.namespaceName != null)
return false;
} else if (!namespaceName.equals(other.namespaceName))
return false;
if (sourceModule == null) {
if (other.sourceModule != null)
return false;
} else if (!sourceModule.equals(other.sourceModule))
return false;
return true;
}
public void setCurrentType(IType type) {
this.type = type;
if (type != null) {
if (type.getParent() instanceof IType) {
IType ns = (IType) type.getParent();
instanceType = new PHPThisClassType(ns.getElementName(),
type.getElementName(), type);
} else {
instanceType = new PHPThisClassType(type.getElementName(), type);
}
}
}
public IType getType() {
return type;
}
}