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/*
 *
 * Copyright 2002-2004 The Ant-Contrib project
 *
 *  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.codehaus.mojo.natives.parser;

public class BranchState
    extends AbstractParserState
{
    private char[] branchChars;

    private AbstractParserState[] branchStates;

    private AbstractParserState noMatchState;

    public BranchState( AbstractParser parser, char[] branchChars, AbstractParserState[] branchStates,
            AbstractParserState noMatchState )
    {
        super( parser );
        this.branchChars = branchChars.clone();
        this.branchStates = branchStates.clone();
        this.noMatchState = noMatchState;
    }

    public AbstractParserState consume( char ch )
    {
        AbstractParserState state;
        for ( int i = 0; i < branchChars.length; i++ )
        {
            if ( ch == branchChars[i] )
            {
                state = branchStates[i];
                return state.consume( ch );
            }
        }
        state = getNoMatchState();
        if ( state != null )
        {
            return state.consume( ch );
        }
        return state;
    }

    protected AbstractParserState getNoMatchState()
    {
        return noMatchState;
    }
}