3 * Copyright 2002-2004 The Ant-Contrib project
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 package net
.sf
.antcontrib
.cpptasks
.parser
;
20 * This parser state checks consumed characters against a specific character.
24 public final class LetterState
25 extends AbstractParserState
{
27 * Next state if a match is found.
29 private final AbstractParserState nextState
;
32 * Next state if not match is found.
34 private final AbstractParserState noMatchState
;
39 private final char thisLetter
;
49 * next state if a match on the letter
50 * @param noMatchStateArg
51 * state if no match on letter
53 public LetterState(final AbstractParser parser
,
54 final char matchLetter
,
55 final AbstractParserState nextStateArg
,
56 final AbstractParserState noMatchStateArg
) {
58 this.thisLetter
= matchLetter
;
59 this.nextState
= nextStateArg
;
60 this.noMatchState
= noMatchStateArg
;
64 * Consumes a character and returns the next state for the parser.
68 * @return the configured nextState if ch is the expected character or the
69 * configure noMatchState otherwise.
71 public AbstractParserState
consume(final char ch
) {
72 if (ch
== thisLetter
) {
76 getParser().getNewLineState();