1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* SonarQube is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.duplications.statement;
import java.util.ArrayList;
import java.util.List;
import org.sonar.duplications.statement.matcher.TokenMatcher;
import org.sonar.duplications.token.Token;
import org.sonar.duplications.token.TokenQueue;
public final class StatementChannel {
private final TokenMatcher[] tokenMatchers;
private final boolean blackHole;
public static StatementChannel create(TokenMatcher... tokenMatchers) {
return new StatementChannel(false, tokenMatchers);
}
public static StatementChannel createBlackHole(TokenMatcher... tokenMatchers) {
return new StatementChannel(true, tokenMatchers);
}
private StatementChannel(boolean blackHole, TokenMatcher... tokenMatchers) {
if (tokenMatchers == null || tokenMatchers.length == 0) {
throw new IllegalArgumentException();
}
this.blackHole = blackHole;
this.tokenMatchers = tokenMatchers;
}
public boolean consume(TokenQueue tokenQueue, List<Statement> output) {
List<Token> matchedTokenList = new ArrayList<>();
for (TokenMatcher tokenMatcher : tokenMatchers) {
if (!tokenMatcher.matchToken(tokenQueue, matchedTokenList)) {
tokenQueue.pushForward(matchedTokenList);
return false;
}
}
// all matchers were successful, so now build the statement
// matchedTokenList.size() check is for case with ForgiveLastTokenMatcher
if (!blackHole && !matchedTokenList.isEmpty()) {
output.add(new Statement(matchedTokenList));
}
return true;
}
}
|
