Parser.java

/**
 * Copyright 2007-2015, Kaazing Corporation. All rights reserved.
 *
 * Licensed 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.kaazing.k3po.driver.internal.behavior.parser;

import java.io.InputStream;

import org.kaazing.k3po.driver.internal.behavior.visitor.AssociateStreamsVisitor;
import org.kaazing.k3po.driver.internal.behavior.visitor.InjectBarriersVisitor;
import org.kaazing.k3po.driver.internal.behavior.visitor.InjectEventsVisitor;
import org.kaazing.k3po.driver.internal.behavior.visitor.InjectFlushVisitor;
import org.kaazing.k3po.lang.internal.ast.AstScriptNode;
import org.kaazing.k3po.lang.internal.parser.ScriptParseException;
import org.kaazing.k3po.lang.internal.parser.ScriptParser;
import org.kaazing.k3po.lang.internal.parser.ScriptParserImpl;

public class Parser implements ScriptParser {

    private final ScriptParser parser;

    public Parser() {
        parser = new ScriptParserImpl();
    }

    @Override
    public AstScriptNode parse(InputStream input) throws ScriptParseException {

        try {
            AstScriptNode script = parser.parse(input);

            InjectEventsVisitor injectEvents = new InjectEventsVisitor();
            InjectEventsVisitor.State injectEventsState = new InjectEventsVisitor.State();
            script = script.accept(injectEvents, injectEventsState);

            InjectBarriersVisitor injectBarriers = new InjectBarriersVisitor();
            script = script.accept(injectBarriers, new InjectBarriersVisitor.State());

            InjectFlushVisitor injectFlush = new InjectFlushVisitor();
            script = script.accept(injectFlush, new InjectFlushVisitor.State());

            AssociateStreamsVisitor associateStreams = new AssociateStreamsVisitor();
            script = script.accept(associateStreams, new AssociateStreamsVisitor.State());

            return script;

        } catch (ScriptParseException e) {
            throw e;
        } catch (Exception e) {
            throw new ScriptParseException(e);
        }
    }
}