1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
package net.sf.jmatchparser.template.engine.operation; |
19 | |
|
20 | |
import java.util.regex.Matcher; |
21 | |
|
22 | |
import net.sf.jmatchparser.template.engine.ParserState; |
23 | |
import net.sf.jmatchparser.template.engine.parameter.Parameter; |
24 | |
import net.sf.jmatchparser.util.PatternCache; |
25 | |
|
26 | |
public class MatchAnyOperation extends Operation { |
27 | |
|
28 | |
private final Parameter parameter; |
29 | |
private final Label nextInstruction; |
30 | |
|
31 | |
public MatchAnyOperation(String templatePosition, Parameter parameter, Label nextInstruction) { |
32 | 23 | super(templatePosition); |
33 | 23 | this.parameter = parameter; |
34 | 23 | this.nextInstruction = nextInstruction; |
35 | 23 | } |
36 | |
|
37 | |
@Override |
38 | |
public OperationResult execute(ParserState state) { |
39 | 27 | String regex = parameter.getRegex(state); |
40 | |
boolean success; |
41 | 27 | boolean enqueued = false; |
42 | |
Matcher m; |
43 | |
|
44 | 27 | CharSequence rest = regex.contains("\n") ? state.getRest() : state.getFirstLine(); |
45 | 27 | if (rest == null) |
46 | 0 | rest = ""; |
47 | |
while (true) { |
48 | 54 | m = PatternCache.compile("^" + regex).matcher(rest); |
49 | 54 | success = m.find(); |
50 | 54 | if (!success) |
51 | 27 | break; |
52 | 27 | if (m.start() != 0) |
53 | 0 | throw new RuntimeException(); |
54 | 27 | ParserState newState = new ParserState(state, nextInstruction.getDestination()); |
55 | 27 | parameter.applyMatch(newState, m); |
56 | 27 | newState.discardCharacters(m.end()); |
57 | 27 | enqueued = true; |
58 | 27 | state.getParser().enqueueState(newState); |
59 | 27 | rest = rest.subSequence(0, m.end() - 1); |
60 | 27 | } |
61 | 27 | if (enqueued) { |
62 | 19 | return OperationResult.DIE; |
63 | |
} else { |
64 | 8 | return OperationResult.FAIL; |
65 | |
} |
66 | |
} |
67 | |
} |