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1
5 package org.h2.bnf;
6
7 import java.util.HashMap  ;
8
9 public class RuleRepeat implements Rule {
10
11 Rule rule;
12
13 RuleRepeat(Rule rule) {
14 this.rule = rule;
15 }
16
17 public String name() {
18 return rule.name();
19 }
20
21 public Rule last() {
22 return this;
23 }
24
25 public void setLinks(HashMap ruleMap) {
26 }
28
29 public String random(Bnf config, int level) {
30 return rule.random(config, level);
31 }
32
33 public String matchRemove(String query, Sentence sentence) {
34 if(sentence.stop()) {
35 return null;
36 }
37 if(query.length()==0) {
38 return null;
39 }
40 while(true) {
41 String s = rule.matchRemove(query, sentence);
42 if(s==null) {
43 return query;
44 } else if(s.length()==0) {
45 return s;
46 }
47 query = s;
48 }
49 }
50
51 public void addNextTokenList(String query, Sentence sentence) {
52 if(sentence.stop()) {
53 return;
54 }
55 while(true) {
56 rule.addNextTokenList(query, sentence);
57 String s = rule.matchRemove(query, sentence);
58 if(s == null || s==query) {
59 break;
60 }
61 query = s;
62 }
63 }
64
65 }
66 |
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