/*******************************************************************************
* 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 org2.eclipse.php.internal.core.ast.nodes;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org2.eclipse.php.internal.core.PHPVersion;
import org2.eclipse.php.internal.core.ast.match.ASTMatcher;
import org2.eclipse.php.internal.core.ast.visitor.Visitor;
/**
* Represents a static field access.
* <pre>e.g.<pre> MyClass::$a
* MyClass::$$a[3]
*/
public class StaticFieldAccess extends StaticDispatch {
private Variable field;
/**
* The structural property of this node type.
*/
public static final ChildPropertyDescriptor CLASS_NAME_PROPERTY =
new ChildPropertyDescriptor(StaticFieldAccess.class, "className", Expression.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$
public static final ChildPropertyDescriptor FIELD_PROPERTY =
new ChildPropertyDescriptor(StaticFieldAccess.class, "field", Variable.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
@Override
ChildPropertyDescriptor getClassNameProperty() {
return CLASS_NAME_PROPERTY;
}
/**
* A list of property descriptors (element type:
* {@link StructuralPropertyDescriptor}),
* or null if uninitialized.
*/
private static final List<StructuralPropertyDescriptor> PROPERTY_DESCRIPTORS;
static {
List<StructuralPropertyDescriptor> properyList = new ArrayList<StructuralPropertyDescriptor>(3);
properyList.add(FIELD_PROPERTY);
properyList.add(CLASS_NAME_PROPERTY);
PROPERTY_DESCRIPTORS = Collections.unmodifiableList(properyList);
}
public StaticFieldAccess(int start, int end, AST ast, Expression className, Variable field) {
super(start, end, ast, className);
if (field == null) {
throw new IllegalArgumentException();
}
setField(field);
}
public StaticFieldAccess(AST ast) {
super(ast);
}
public void accept0(Visitor visitor) {
final boolean visit = visitor.visit(this);
if (visit) {
childrenAccept(visitor);
}
visitor.endVisit(this);
}
public void childrenAccept(Visitor visitor) {
getClassName().accept(visitor);
field.accept(visitor);
}
public void traverseTopDown(Visitor visitor) {
accept(visitor);
getClassName().traverseTopDown(visitor);
field.traverseTopDown(visitor);
}
public void traverseBottomUp(Visitor visitor) {
getClassName().traverseBottomUp(visitor);
field.traverseBottomUp(visitor);
accept(visitor);
}
public void toString(StringBuffer buffer, String tab) {
buffer.append(tab).append("<StaticFieldAccess"); //$NON-NLS-1$
appendInterval(buffer);
buffer.append(">\n"); //$NON-NLS-1$
buffer.append(TAB).append(tab).append("<ClassName>\n"); //$NON-NLS-1$
getClassName().toString(buffer, TAB + TAB + tab);
buffer.append("\n").append(TAB).append(tab).append("</ClassName>\n"); //$NON-NLS-1$ //$NON-NLS-2$
field.toString(buffer, TAB + tab);
buffer.append("\n").append(tab).append("</StaticFieldAccess>"); //$NON-NLS-1$ //$NON-NLS-2$
}
public int getType() {
return ASTNode.STATIC_FIELD_ACCESS;
}
/**
* The field of this access
*
* @return field of this access
*/
public Variable getField() {
return field;
}
/**
* Sets the variable declaration of this catch clause.
*
* @param exception the exception variable declaration node
* @exception IllegalArgumentException if:
* <ul>
* <li>the node belongs to a different AST</li>
* <li>the node already has a parent</li>
* <li>a cycle in would be created</li>
* </ul>
*/
public void setField(Variable variable) {
if (variable == null) {
throw new IllegalArgumentException();
}
ASTNode oldChild = this.field;
preReplaceChild(oldChild, variable, FIELD_PROPERTY);
this.field = variable;
postReplaceChild(oldChild, variable, FIELD_PROPERTY);
}
final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
if (property == FIELD_PROPERTY) {
if (get) {
return getField();
} else {
setField((Variable) child);
return null;
}
}
// allow default implementation to flag the error
return super.internalGetSetChildProperty(property, get, child);
}
public ASTNode getMember() {
return getField();
}
/*
* Method declared on ASTNode.
*/
public boolean subtreeMatch(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
@Override
ASTNode clone0(AST target) {
final Expression name = ASTNode.copySubtree(target, getClassName());
final Variable field = ASTNode.copySubtree(target, getField());
final StaticFieldAccess result = new StaticFieldAccess(getStart(), getEnd(), target, name, field);
return result;
}
@Override
List<StructuralPropertyDescriptor> internalStructuralPropertiesForType(PHPVersion apiLevel) {
return PROPERTY_DESCRIPTORS;
}
/**
* Resolves and returns the binding for the field accessed by this
* expression.
*
* @return the binding, or <code>null</code> if the binding cannot be
* resolved
*/
public IVariableBinding resolveFieldBinding() {
// Aptana Mod
// return this.ast.getBindingResolver().resolveField(this);
return null;
}
}