001/*
002 * Copyright (C) 2009-2011 Mathias Doenitz
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.parboiled.matchers;
018
019import org.parboiled.MatcherContext;
020import org.parboiled.matchervisitors.MatcherVisitor;
021import org.parboiled.support.Chars;
022import org.parboiled.support.Chars;
023
024import static org.parboiled.common.Preconditions.checkArgNotNull;
025
026/**
027 * A {@link Matcher} matching any single character except EOI.
028 */
029public class AnyMatcher extends AbstractMatcher {
030
031    public AnyMatcher() {
032        super("ANY");
033    }
034
035    public boolean match(MatcherContext context) {
036        switch (context.getCurrentChar()) {
037            case Chars.DEL_ERROR:
038            case Chars.INS_ERROR:
039            case Chars.RESYNC:
040            case Chars.RESYNC_START:
041            case Chars.RESYNC_END:
042            case Chars.RESYNC_EOI:
043            case Chars.EOI:
044                return false;
045        }
046        context.advanceIndex(1);
047        context.createNode();
048        return true;
049    }
050
051    public <R> R accept(MatcherVisitor<R> visitor) {
052        checkArgNotNull(visitor, "visitor");
053        return visitor.visit(this);
054    }
055
056}