/*******************************************************************************
 * Copyright (c) 2005, 2012 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Devin Steffler (IBM) - Initial API and implementation
 *     Markus Schorn (Wind River Systems)
 *******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;

import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;

/**
 * The CPPImplicitTypedef is used to represent implicit typedefs that exist on the translation
 * unit but are not actually part of the physical AST created by CDT.
 *
 * An example is the GCC built-in typedef:  typedef char * __builtin_va_list;
 */
public class CPPImplicitTypedef extends CPPTypedef {
	private IType type;
	private char[] name;
	private IScope scope;

	public CPPImplicitTypedef(IType type, char[] name, IScope scope) {
		super(null);
		this.type = type;
		this.name = name;
		this.scope = scope;
	}

	@Override
	public IType getType() {
		return type;
	}

	@Override
	public String getName() {
		return String.valueOf(name);
	}

	@Override
	public char[] getNameCharArray() {
		return name;
	}

	@Override
	public IScope getScope() {
		return scope;
	}

	@Override
	public boolean isSameType(IType t) {
		if (t == this)
			return true;
		if (t instanceof ITypedef) {
			IType temp = getType();
			if (temp != null)
				return temp.isSameType(((ITypedef) t).getType());
			return false;
		}

		IType temp;
		temp = getType();
		if (temp != null)
			return temp.isSameType(t);
		return false;
	}

	@Override
	public Object clone() {
		IType t = null;
		t = (IType) super.clone();
		return t;
	}

	/**
	 * returns null
	 */
	@Override
	public IASTNode[] getDeclarations() {
		return null;
	}

	/**
	 * returns null
	 */
	@Override
	public IASTNode getDefinition() {
		return null;
	}

	/**
	 * does nothing
	 */
	@Override
	public void addDefinition(IASTNode node) {
		// do nothing
	}

	/**
	 * does nothing
	 */
	@Override
	public void addDeclaration(IASTNode node) {
		// do nothing
	}

	@Override
	public String[] getQualifiedName() {
		String[] temp = new String[1];
		temp[0] = String.valueOf(name);

		return temp;
	}

	@Override
	public char[][] getQualifiedNameCharArray() {
		char[][] temp = new char[1][];
		temp[0] = name;

		return temp;
	}

	/**
	 * returns true
	 */
	@Override
	public boolean isGloballyQualified() {
		return true;
	}
}
