/*
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package org.apache.flex.compiler.internal.driver.js;

import org.apache.flex.compiler.internal.projects.CompilerProject;
import org.apache.flex.compiler.internal.projects.DefinitionPriority;
import org.apache.flex.compiler.internal.projects.ISourceFileHandler;
import org.apache.flex.compiler.internal.units.ASCompilationUnit;
import org.apache.flex.compiler.units.ICompilationUnit;

/**
 * Implementation of ISourceFileHandler that constructs
 * {@link ASCompilationUnit}'s. JSSourceFileHandler is the SourceFileHandler
 * that provides JSCompilationUnit for *.as files. JSDriver registers
 * JSSourceFileHandler at FlexApplicationProject. This implementation is part of
 * FalconJS. For more details on FalconJS see org.apache.flex.compiler.JSDriver
 */
public final class JSSourceFileHandler implements ISourceFileHandler
{

    public static final String EXTENSION = "as"; //$NON-NLS-1$
    public static final JSSourceFileHandler INSTANCE = new JSSourceFileHandler();

    private JSSourceFileHandler()
    {
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String[] getExtensions()
    {
        return new String[] { EXTENSION };
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public ICompilationUnit createCompilationUnit(CompilerProject proj,
            String path, DefinitionPriority.BasePriority basePriority,
            int order, String qname, String locale)
    {
        return new JSCompilationUnit(proj, path, basePriority, qname);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean needCompilationUnit(CompilerProject project, String path,
            String qname, String locale)
    {
        return true;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean canCreateInvisibleCompilationUnit()
    {
        return false;
    }
}