1 /*
2 * #%L
3 * Native ARchive plugin for Maven
4 * %%
5 * Copyright (C) 2002 - 2014 NAR Maven Plugin developers.
6 * %%
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * #L%
19 */
20 package com.github.maven_nar.cpptasks.parser;
21
22 /**
23 * This parser state checks consumed characters against a specific character or
24 * whitespace.
25 *
26 * @author Curt Arnold
27 */
28 public final class WhitespaceOrLetterState extends AbstractParserState {
29 /**
30 * Next state if the character is found.
31 */
32 private final AbstractParserState nextState;
33
34 /**
35 * Character to match.
36 */
37 private final char thisLetter;
38
39 /**
40 * Constructor.
41 *
42 * @param parser
43 * parser
44 * @param matchLetter
45 * letter to match
46 * @param nextStateArg
47 * next state if a match on the letter
48 */
49 public WhitespaceOrLetterState(final AbstractParser parser, final char matchLetter,
50 final AbstractParserState nextStateArg) {
51 super(parser);
52 this.thisLetter = matchLetter;
53 this.nextState = nextStateArg;
54 }
55
56 /**
57 * Consumes a character and returns the next state for the parser.
58 *
59 * @param ch
60 * next character @returns the configured nextState if ch is the
61 * expected character or the configure noMatchState otherwise.
62 * @return next state
63 */
64 @Override
65 public AbstractParserState consume(final char ch) {
66 if (ch == this.thisLetter) {
67 return this.nextState;
68 }
69 if (ch == ' ' || ch == '\t') {
70 return this;
71 }
72 if (ch == '\n') {
73 getParser().getNewLineState();
74 }
75 return null;
76 }
77 }