/*******************************************************************************
 * 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;

import org.eclipse.dltk.ast.Modifiers;
import org.eclipse.dltk.core.*;
import org.eclipse.dltk.internal.core.ModelElement;
import org.eclipse.dltk.internal.core.SourceMethod;
import org.eclipse.dltk.internal.core.SourceMethodUtils;
import org.eclipse.dltk.internal.core.util.Util;
import org.eclipse.php.internal.core.codeassist.AliasType;

/**
 * This is a fake model element that can live independently from the DLTK model
 * manager.
 * 
 * @author michael
 */
public class FakeMethod extends SourceMethod {

	// private static final String[] NO_STRINGS = new String[0];
	private String receiver;
	private IParameter[] parameters = SourceMethodUtils.NO_PARAMETERS;
	// private String[] parameterInitializers = null;
	private int flags = Modifiers.AccPublic;
	private int offset;
	private int length;
	private boolean hasSpecialOffsets = false;
	private int nameOffset;
	private int nameLength;
	private boolean isConstructor;

	public String getReceiver() {
		return receiver;
	}

	public void setReceiver(String receiver) {
		this.receiver = receiver;
	}

	public FakeMethod(ModelElement parent, String name) {
		super(parent, name);
	}

	public FakeMethod(ModelElement parent, String name, int modifiers) {
		super(parent, name);
		this.flags = modifiers;
	}

	public FakeMethod(ModelElement parent, String name, int offset, int length, int nameOffset, int nameLength) {
		super(parent, name);
		this.offset = offset;
		this.length = length;
		this.nameOffset = nameOffset;
		this.nameLength = nameLength;
		hasSpecialOffsets = true;
	}

	public ISourceRange getNameRange() throws ModelException {
		if (hasSpecialOffsets)
			return new SourceRange(nameOffset, nameLength);
		return super.getNameRange();
	}

	public ISourceRange getSourceRange() throws ModelException {
		if (hasSpecialOffsets)
			return new SourceRange(offset, length);
		return super.getSourceRange();
	}

	public IScriptProject getScriptProject() {
		return parent.getScriptProject();
	}

	public int getFlags() {
		return flags;
	}

	public void setFlags(int flags) {
		this.flags = flags;
	}

	public void setParameters(IParameter[] parameters) {
		this.parameters = parameters;
	}

	public IParameter[] getParameters() throws ModelException {
		return parameters;
	}

	@Override
	public String[] getParameterNames() throws ModelException {
		return SourceMethodUtils.getParameterNames(parameters);
	}

	public void setConstructor(boolean isConstructor) {
		this.isConstructor = isConstructor;
	}

	public boolean isConstructor() throws ModelException {
		return isConstructor;
	}

	@Override
	public boolean equals(Object o) {
		if (!(o instanceof FakeMethod)) {
			return false;
		}
		FakeMethod fm = (FakeMethod) o;
		return this.name.equals(fm.name) && getRealParent(this.parent).equals(getRealParent(fm.parent));
	}

	public int hashCode() {
		return Util.combineHashCodes(this.name.hashCode(), getRealParent(this.parent).hashCode());
	}

	public IModelElement getRealParent(IModelElement type) {
		if (type instanceof AliasType) {
			AliasType at = (AliasType) type;
			return at.getType();

		}
		return this.parent;
	}

}