]> gitweb.fperrin.net Git - Dictionary.git/blob - jars/icu4j-52_1/main/tests/translit/src/com/ibm/icu/dev/test/util/TestBNF.java
Clean up imports.
[Dictionary.git] / jars / icu4j-52_1 / main / tests / translit / src / com / ibm / icu / dev / test / util / TestBNF.java
1 /*
2  *******************************************************************************
3  * Copyright (C) 2002-2012, International Business Machines Corporation and    *
4  * others. All Rights Reserved.                                                *
5  *******************************************************************************
6  */
7 package com.ibm.icu.dev.test.util;
8
9 import java.util.Random;
10
11 import com.ibm.icu.dev.util.BNF;
12 import com.ibm.icu.dev.util.Pick;
13 import com.ibm.icu.dev.util.Quoter;
14 import com.ibm.icu.dev.util.Tokenizer;
15 import com.ibm.icu.text.UnicodeSet;
16
17 public class TestBNF {
18     
19     static final String[] testRules = {
20         "$root = [ab]{3};",
21         
22         "$root = [ab]{3,};",
23         
24         "$root = [ab]{3,5};",
25         
26         "$root = [ab]*;",
27         
28         "$root = [ab]?;",
29         
30         "$root = [ab]+;",
31         
32         "$us = [a-z];" +
33         "$root = [0-9$us];",
34         
35         "$root = a $foo b? 25% end 30% | $foo 50%;\r\n" +
36         "$foo = c{1,5} 20%;",
37         
38         "$root = [a-z]{1,5}~;",
39         
40         "$root = [a-z]{5}~;",
41         
42         "$root = '\\' (u | U0010 | U000 $hex) $hex{4} ;\r\n" +
43         "$hex = [0-9A-Fa-f];",
44     };
45         
46     static String unicodeSetBNF = "" +
47     "$root = $leaf | '[' $s $root2 $s ']' ;\r\n" +
48     "$root2 = $leaf | '[' $s $root3 $s ']' | ($root3 $s ($op $root3 $s){0,3}) ;\r\n" +
49     "$root3 = $leaf | '[' $s $root4 $s ']' | ($root4 $s ($op $root4 $s){0,3}) ;\r\n" +
50     "$root4 = $leaf | ($leaf $s ($op $leaf $s){0,3}) ;\r\n" +
51     "$op = (('&' | '-') $s)? 70%;" +
52     "$leaf = '[' $s $list $s ']' | $prop;\r\n" +
53     "$list = ($char $s ('-' $s $char $s)? 30%){1,5} ;\r\n" +
54     "$prop = '\\' (p | P) '{' $s $propName $s '}' | '[:' '^'? $s $propName $s ':]';\r\n" +
55     "$needsQuote = [\\-\\][:whitespace:][:control:]] ;\r\n" +
56     "$char = [[\\u0000-\\U00010FFFF]-$needsQuote] | $quoted ;\r\n" +
57     "$quoted = '\\' ('u' | 'U0010' | 'U000' $hex) $hex{4} ;\r\n" +
58     "$hex = [0-9A-Fa-f];\r\n" +
59     "$s = ' '? 20%;\r\n" +
60     "$propName = (whitespace | ws) | (uppercase | uc) | (lowercase | lc) | $category;\r\n" +
61     "$category = ((general | gc) $s '=' $s)? $catvalue;\r\n" +
62     "$catvalue = (C | Other | Cc | Control | Cf | Format | Cn | Unassigned | L | Letter);\r\n";
63
64     public static void main (String[] args) {
65         testTokenizer();
66         for (int i = 0; i < testRules.length; ++i) {
67             testBNF(testRules[i], null, 20);          
68         }
69         
70         testBNF(unicodeSetBNF, null, 20);
71         //testParser();
72     }
73     
74     static void testBNF(String rules, UnicodeSet chars, int count) {
75         BNF bnf = new BNF(new Random(0), new Quoter.RuleQuoter())
76         .addSet("$chars", chars)
77         .addRules(rules)
78         .complete();
79
80         System.out.println("====================================");
81         System.out.println("BNF");
82         System.out.println(rules);
83         System.out.println(bnf.getInternal());
84         for (int i = 0; i < count; ++i) {
85             System.out.println(i + ": " + bnf.next());
86         }
87     }
88     
89     /*
90     public static testManual() {
91         Pick p = Pick.maybe(75,Pick.unquoted("a"));
92         testOr(p, 1);
93         p = Pick.or(new String[]{"", "a", "bb", "ccc"});
94         testOr(p, 3);
95         p = Pick.repeat(3, 5, new int[]{20, 30, 20}, "a");
96         testOr(p, 5);        
97         p = Pick.codePoint("[a-ce]");
98         testCodePoints(p);        
99         p = Pick.codePoint("[a-ce]");
100         testCodePoints(p);        
101         p = Pick.string(2, 8, p);
102         testOr(p,10);
103         
104         p = Pick.or(new String[]{"", "a", "bb", "ccc"});
105         p = Pick.and(p).and2(p).and2("&");
106         testMatch(p, "abb&");
107         testMatch(p, "bba");
108         
109         // testEnglish();        
110     }
111     */
112     
113     static void testMatch(Pick p, String source) {
114         Pick.Position pp = new Pick.Position();
115         boolean value = p.match(source, pp);
116         System.out.println("Match: " + value + ", " + pp);      
117     }
118     /*
119     static void testParser() {
120         try {
121             Pick.Target target = new Pick.Target();
122             for (int i = 0; i < rules.length; ++i) {
123                 target.addRule(rules[i]);
124             }
125         } catch (ParseException e) {
126             // TODO Auto-generated catch block
127             e.printStackTrace();
128         }
129     }
130     */
131     
132     static class Counts {
133         int[] counts;       
134         Counts(int max) {
135             counts = new int[max+1];
136         }
137         void inc(int index) {
138             counts[index]++;
139         }
140         void show() {
141             System.out.println("Printing Counts");
142             for (int i = 0; i < counts.length; ++i) {
143                 if (counts[i] == 0) continue;
144                 System.out.println(i + ": " + counts[i]);
145             }
146             System.out.println();
147         }
148     }
149     
150 /*    static final String[] rules = {
151         "$s = ' ';",
152         "$noun = dog | house | government | wall | street | zebra;",
153         "$adjective = red | glorious | simple | nasty | heavy | clean;",
154         "$article = quickly | oddly | silently | boldly;",
155         "$adjectivePhrase = ($adverb $s)? 50% $adjective* 0% 30% 20% 10%;",
156         "$nounPhrase = $articles $s ($adjectivePhrase $s)? 30% $noun;",
157         "$verb = goes | fishes | walks | sleeps;",
158         "$tverb = carries | lifts | overturns | hits | jumps on;",
159         "$copula = is 30% | seems 10%;",
160         "$sentence1 = $nounPhrase $s $verb $s ($s $adverb)? 30%;",
161         "$sentence2 = $nounPhrase $s $tverb $s $nounPhrase ($s $adverb)? 30%;",
162         "$sentence3 = $nounPhrase $s $copula $s $adjectivePhrase;",
163         "$conj = but | and | or;",
164         "$sentence4 = $sentence1 | $sentence2 | $sentence3 20% | $sentence4 $conj $sentence4 20%;",
165         "$sentence = $sentence4 '.';"};
166  */
167     /*
168     private static void testEnglish() {
169         Pick s = Pick.unquoted(" ");
170         Pick verbs = Pick.or(new String[]{"goes", "fishes", "walks", "sleeps"});
171         Pick transitive = Pick.or(new String[]{"carries", "lifts", "overturns", "hits", "jumps on"});
172         Pick nouns = Pick.or(new String[]{"dog", "house", "government", "wall", "street", "zebra"});
173         Pick adjectives = Pick.or(new String[]{"red", "glorious", "simple", "nasty", "heavy", "clean"});
174         Pick articles = Pick.or(new String[]{"the", "a"});
175         Pick adverbs = Pick.or(new String[]{"quickly", "oddly", "silently", "boldly"});
176         Pick adjectivePhrase = Pick.and(0.5, Pick.and(adverbs).and2(s)).and2(adjectives);
177         Pick nounPhrase = Pick.and(articles).and2(s)
178             .and2(0.3, Pick.and(adjectivePhrase).and2(s))
179             .and2(nouns);
180         Pick copula = Pick.or(new String[]{"is", "seems"});
181         Pick sentence1 = Pick.and(nounPhrase).and2(s).and2(verbs)
182             .and2(0.3, Pick.and(s).and2(adverbs)).name("s1");
183         Pick sentence2 = Pick.and(nounPhrase).and2(s).and2(transitive).and2(s).and2(nounPhrase)
184             .and2(0.3, Pick.and(s).and2(adverbs)).name("s2");
185         Pick sentence3 = Pick.and(nounPhrase).and2(s).and2(copula).and2(s).and2(adjectivePhrase).name("s3");
186         Pick conj = Pick.or(new String[]{", but", ", and", ", or"});
187         Pick forward = Pick.unquoted("forward");
188         Pick pair = Pick.and(forward).and2(conj).and2(s).and2(forward).name("part");
189         Pick sentenceBase = Pick.or(sentence1).or2(sentence2).or2(sentence3).or2(0.6666, pair).name("sentence");
190         sentenceBase.replace(forward, sentenceBase);
191         Pick sentence = Pick.and(sentenceBase).and2(Pick.unquoted("."));
192         Pick.Target target = Pick.Target.make(sentence);
193         for (int i = 0; i < 50; ++i) {
194             System.out.println(i + ": " + target.next());
195         }
196     }
197     private static void testOr(Pick p, int count) {
198         Pick.Target target = Pick.Target.make(p);
199         Counts counts = new Counts(count + 10);
200         for (int i = 0; i < 1000; ++i) {
201             String s = target.next();
202             counts.inc(s.length());
203         }
204         counts.show();
205     }
206     private static void testCodePoints(Pick p) {
207         Pick.Target target = Pick.Target.make(p);
208         Counts counts = new Counts(128);
209         for (int i = 0; i < 10000; ++i) {
210             String s = target.next();
211             counts.inc(s.charAt(0));
212         }
213         counts.show();
214     }
215     */
216     public static void printRandoms() {
217         BNF bnf = new BNF(new Random(0), new Quoter.RuleQuoter())
218         .addRules("[a-z]{2,5}").complete();
219         System.out.println("Start");
220         for (int i = 0; i < 100; ++i) {
221             String temp = bnf.next();
222             System.out.println(i + ")\t" + temp);
223         }
224     }
225     
226     public static void testTokenizer() {
227         Tokenizer t = new Tokenizer();
228         
229         String[] samples = {"a'b'c d #abc\r e", "'a '123 321", 
230             "\\\\", "a'b", "a'", "abc def%?ghi", "%", "a", "\\ a", "a''''b"};
231         for (int i = 0; i < samples.length; ++i) {
232             t.setSource(samples[i]);
233             System.out.println();
234             System.out.println("Input: " + t.getSource());
235             int type = 0;
236             while (type != Tokenizer.DONE) {
237                 type = t.next();
238                 System.out.println(t.toString(type, false));
239             }
240         }
241     }
242
243 }
244