/*
 * Copyright (c) 2004, 2006, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.apt.mirror.declaration;


import java.util.ArrayList;
import java.util.Collection;

import com.sun.mirror.declaration.*;
import com.sun.mirror.util.*;
import com.sun.tools.apt.mirror.AptEnv;
import com.sun.tools.javac.code.*;
import com.sun.tools.javac.code.Symbol.*;


/**
 * Implementation of PackageDeclaration.
 */

public class PackageDeclarationImpl extends DeclarationImpl
				    implements PackageDeclaration {

    private PackageSymbol sym;


    public PackageDeclarationImpl(AptEnv env, PackageSymbol sym) {
	super(env, sym);
	this.sym = sym;
    }


    /**
     * Returns the qualified name.
     */
    public String toString() {
	return getQualifiedName();
    }

    /**
     * {@inheritDoc}
     */
    public String getQualifiedName() {
	return sym.getQualifiedName().toString();
    }

    /**
     * {@inheritDoc}
     */
    public Collection<ClassDeclaration> getClasses() {
	return identityFilter.filter(getAllTypes(),
				     ClassDeclaration.class);
    }

    /**
     * {@inheritDoc}
     */
    public Collection<EnumDeclaration> getEnums() {
	return identityFilter.filter(getAllTypes(),
				     EnumDeclaration.class);
    }

    /**
     * {@inheritDoc}
     */
    public Collection<InterfaceDeclaration> getInterfaces() {
	return identityFilter.filter(getAllTypes(),
				     InterfaceDeclaration.class);
    }

    /**
     * {@inheritDoc}
     */
    public Collection<AnnotationTypeDeclaration> getAnnotationTypes() {
	return identityFilter.filter(getAllTypes(),
				     AnnotationTypeDeclaration.class);
    }

    /**
     * {@inheritDoc}
     */
    public void accept(DeclarationVisitor v) {
	v.visitPackageDeclaration(this);
    }


    // Cache of all top-level type declarations in this package.
    private Collection<TypeDeclaration> allTypes = null;

    /**
     * Caches and returns all top-level type declarations in this package.
     * Omits synthetic types.
     */
    private Collection<TypeDeclaration> getAllTypes() {
	if (allTypes != null) {
	    return allTypes;
	}
	allTypes = new ArrayList<TypeDeclaration>();
	for (Symbol s : getMembers(false)) {
	    allTypes.add(env.declMaker.getTypeDeclaration((ClassSymbol) s));
	}
	return allTypes;
    }
}