/*
 *  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.codehaus.groovy.antlr;

import groovy.util.GroovyTestCase;

import java.io.PrintWriter;
import java.io.Reader;
import java.io.StringWriter;

import org.codehaus.groovy.antlr.parser.GroovyLexer;
import org.codehaus.groovy.antlr.parser.GroovyRecognizer;

public abstract class SourceParserTest extends GroovyTestCase {
    protected void parse(String name, Reader reader) {
        SourceBuffer sourceBuffer = new SourceBuffer();
        UnicodeEscapingReader unicodeReader = new UnicodeEscapingReader(reader, sourceBuffer);
        GroovyLexer lexer = new GroovyLexer(unicodeReader);
        unicodeReader.setLexer(lexer);
        GroovyRecognizer parser = GroovyRecognizer.make(lexer);
        parser.setSourceBuffer(sourceBuffer);
        parser.setFilename(name);

        // start parsing at the compilationUnit rule
        try {
            parser.compilationUnit();
        }
        catch (Exception ex) {
            StringWriter out = new StringWriter();
            out.write(ex.getMessage());
            out.write("\n");
            ex.printStackTrace(new PrintWriter(out));
            fail(out.toString());
        }
    }
}
