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Java > Open Source Codes > com > openinventions > webappfilter > processor > xpathexpression > XPathExpressionParser


1 /* Generated By:JavaCC: Do not edit this line. XPathExpressionParser.java */
2 package com.openinventions.webappfilter.processor.xpathexpression;
3
4 import com.openinventions.metaframework.*;
5 import java.io.*;
6 import org.apache.commons.logging.*;
7
8 public class XPathExpressionParser implements XPathExpressionParserConstants {
9     private static final Log log = LogFactory.getLog(XPathExpressionParser.class);
10     private State state = null;
11
12     public Object JavaDoc parse(State state) throws Exception JavaDoc {
13         this.state = state;
14         return parseLine();
15     }
16
17     public double getDouble(Object JavaDoc o) throws Exception JavaDoc {
18         if (o instanceof String JavaDoc) {
19             String JavaDoc s = (String JavaDoc) o;
20             if (s.equals("")) {
21                 return 0.0;
22             }
23             return Double.parseDouble(s);
24         } else if (o instanceof Long JavaDoc) {
25             return ((double) ((Long JavaDoc) o).longValue());
26         } else if (o instanceof Double JavaDoc) {
27             return ((Double JavaDoc) o).doubleValue();
28         } else {
29             log.error("wasn't expecting class " + o.getClass().getName());
30         }
31
32         return 0.0;
33     }
34
35   final public Object JavaDoc parseLine() throws ParseException, Exception JavaDoc {
36     Object JavaDoc b;
37     b = expr();
38                     {if (true) return b;}
39     throw new Error JavaDoc("Missing return statement in function");
40   }
41
42   final public Object JavaDoc expr() throws ParseException, Exception JavaDoc {
43     Object JavaDoc a = null;
44     Object JavaDoc b = null;
45     a = element();
46     label_1:
47     while (true) {
48       if (jj_2_1(2)) {
49         ;
50       } else {
51         break label_1;
52       }
53       if (jj_2_2(2)) {
54         jj_consume_token(10);
55         b = expr();
56                             if ((a instanceof Long JavaDoc) && (b instanceof Long JavaDoc)) {
57                                 {if (true) return new Long JavaDoc(((Long JavaDoc) a).longValue() + ((Long JavaDoc) b).longValue());}
58                             } if ((a instanceof Double JavaDoc) && (b instanceof Double JavaDoc)) {
59                                 {if (true) return new Double JavaDoc(((Double JavaDoc) a).doubleValue() + ((Double JavaDoc) b).doubleValue());}
60                             } if ((a instanceof String JavaDoc) && (b instanceof Long JavaDoc)) {
61                                 String JavaDoc s = (String JavaDoc) a;
62                                 if (s.equals("")) {
63                                     s = "0";
64                                 }
65                                 {if (true) return new Long JavaDoc(Long.parseLong(s) + ((Long JavaDoc) b).longValue());}
66                             } if ((a instanceof String JavaDoc) && (b instanceof Double JavaDoc)) {
67                                 String JavaDoc s = (String JavaDoc) a;
68                                 if (s.equals("")) {
69                                     s = "0.0";
70                                 }
71                                 {if (true) return new Double JavaDoc(Double.parseDouble(s) + ((Double JavaDoc) b).doubleValue());}
72                             } else if ((a instanceof Element) && (b instanceof String JavaDoc)) {
73                                 Element element = (Element) a;
74                                 String JavaDoc path = (String JavaDoc) b;
75                                 if (!element.isExists(path)) {
76                                     {if (true) return null;}
77                                 } else if (element.isElement(path)) {
78                                     {if (true) return element.getElement(path);}
79                                 } else {
80                                     {if (true) return element.getValue(path);}
81                                 }
82                             } else if ((a instanceof String JavaDoc) && (b instanceof String JavaDoc)) {
83                                 {if (true) return ((String JavaDoc) a + (String JavaDoc) b);}
84                             } else {
85                                 log.error("combination not accepted " + a + "-" + a.getClass().getName() + "-" + b + "-" + b.getClass().getName());
86                             }
87       } else if (jj_2_3(2)) {
88         jj_consume_token(11);
89         b = expr();
90                             if ((a instanceof String JavaDoc) && (b instanceof Long JavaDoc)) {
91                                 String JavaDoc s = (String JavaDoc) a;
92                                 if (s.equals("")) {
93                                     s = "0";
94                                 }
95                                 {if (true) return new Long JavaDoc(Long.parseLong(s) - ((Long JavaDoc) b).longValue());}
96                             } if ((a instanceof String JavaDoc) && (b instanceof Double JavaDoc)) {
97                                 String JavaDoc s = (String JavaDoc) a;
98                                 if (s.equals("")) {
99                                     s = "0.0";
100                                 }
101                                 {if (true) return new Double JavaDoc(Double.parseDouble(s) - ((Double JavaDoc) b).doubleValue());}
102                             } else {
103                                 log.error("combination not accepted " + a + "-" + a.getClass().getName() + "-" + b + "-" + b.getClass().getName());
104                             }
105       } else if (jj_2_4(2)) {
106         jj_consume_token(12);
107         b = expr();
108                             {if (true) return new Boolean JavaDoc(getDouble(a) < getDouble(b));}
109       } else if (jj_2_5(2)) {
110         jj_consume_token(13);
111         b = expr();
112                             {if (true) return new Boolean JavaDoc(getDouble(a) <= getDouble(b));}
113       } else if (jj_2_6(2)) {
114         jj_consume_token(14);
115         b = expr();
116                             {if (true) return new Boolean JavaDoc(getDouble(a) > getDouble(b));}
117       } else if (jj_2_7(2)) {
118         jj_consume_token(15);
119         b = expr();
120                             {if (true) return new Boolean JavaDoc(getDouble(a) >= getDouble(b));}
121       } else if (jj_2_8(2)) {
122         jj_consume_token(16);
123         b = expr();
124                             {if (true) return new Boolean JavaDoc(getDouble(a) == getDouble(b));}
125       } else {
126         jj_consume_token(-1);
127         throw new ParseException();
128       }
129     }
130                           {if (true) return a;}
131     throw new Error JavaDoc("Missing return statement in function");
132   }
133
134   final public Object JavaDoc element() throws ParseException, Exception JavaDoc {
135     Token t;
136     Object JavaDoc a;
137     if (jj_2_9(2)) {
138       t = jj_consume_token(LONG);
139                             {if (true) return new Long JavaDoc(t.toString());}
140     } else if (jj_2_10(2)) {
141       t = jj_consume_token(DOUBLE);
142                             {if (true) return new Double JavaDoc(t.toString());}
143     } else if (jj_2_11(2)) {
144       t = jj_consume_token(STRING);
145                                 String JavaDoc subject = t.toString().trim();
146                                 if (subject.length() > 2) {
147                                     if (subject.startsWith("\"\"")) {
148                                         subject = subject.substring(2, subject.length() - 2);
149                                     } else {
150                                         subject = subject.substring(1, subject.length() - 1);
151                                     }
152                                 } else {
153                                     subject = "";
154                                 }
155                                 {if (true) return subject;}
156     } else if (jj_2_12(2)) {
157       t = jj_consume_token(ELEMENT);
158                             String JavaDoc path = t.toString();
159                             String JavaDoc[] pathTokens = t.toString().split("/");
160                             if ((pathTokens != null) && (pathTokens.length > 2)) {
161                                 Element element = (Element) state.get(pathTokens[1]);
162                                 String JavaDoc subPath = path.substring(path.indexOf("/", 1), path.length());
163                                 if (element.isElement(subPath)) {
164                                     {if (true) return element.getElement(subPath);}
165                                 } else {
166                                     {if (true) return element.getValue(subPath);}
167                                 }
168                             }
169                             {if (true) return state.get(pathTokens[1]);}
170     } else if (jj_2_13(2)) {
171       jj_consume_token(17);
172       a = expr();
173       jj_consume_token(18);
174                          {if (true) return a;}
175     } else {
176       jj_consume_token(-1);
177       throw new ParseException();
178     }
179     throw new Error JavaDoc("Missing return statement in function");
180   }
181
182   final private boolean jj_2_1(int xla) {
183     jj_la = xla; jj_lastpos = jj_scanpos = token;
184     try { return !jj_3_1(); }
185     catch(LookaheadSuccess ls) { return true; }
186     finally { jj_save(0, xla); }
187   }
188
189   final private boolean jj_2_2(int xla) {
190     jj_la = xla; jj_lastpos = jj_scanpos = token;
191     try { return !jj_3_2(); }
192     catch(LookaheadSuccess ls) { return true; }
193     finally { jj_save(1, xla); }
194   }
195
196   final private boolean jj_2_3(int xla) {
197     jj_la = xla; jj_lastpos = jj_scanpos = token;
198     try { return !jj_3_3(); }
199     catch(LookaheadSuccess ls) { return true; }
200     finally { jj_save(2, xla); }
201   }
202
203   final private boolean jj_2_4(int xla) {
204     jj_la = xla; jj_lastpos = jj_scanpos = token;
205     try { return !jj_3_4(); }
206     catch(LookaheadSuccess ls) { return true; }
207     finally { jj_save(3, xla); }
208   }
209
210   final private boolean jj_2_5(int xla) {
211     jj_la = xla; jj_lastpos = jj_scanpos = token;
212     try { return !jj_3_5(); }
213     catch(LookaheadSuccess ls) { return true; }
214     finally { jj_save(4, xla); }
215   }
216
217   final private boolean jj_2_6(int xla) {
218     jj_la = xla; jj_lastpos = jj_scanpos = token;
219     try { return !jj_3_6(); }
220     catch(LookaheadSuccess ls) { return true; }
221     finally { jj_save(5, xla); }
222   }
223
224   final private boolean jj_2_7(int xla) {
225     jj_la = xla; jj_lastpos = jj_scanpos = token;
226     try { return !jj_3_7(); }
227     catch(LookaheadSuccess ls) { return true; }
228     finally { jj_save(6, xla); }
229   }
230
231   final private boolean jj_2_8(int xla) {
232     jj_la = xla; jj_lastpos = jj_scanpos = token;
233     try { return !jj_3_8(); }
234     catch(LookaheadSuccess ls) { return true; }
235     finally { jj_save(7, xla); }
236   }
237
238   final private boolean jj_2_9(int xla) {
239     jj_la = xla; jj_lastpos = jj_scanpos = token;
240     try { return !jj_3_9(); }
241     catch(LookaheadSuccess ls) { return true; }
242     finally { jj_save(8, xla); }
243   }
244
245   final private boolean jj_2_10(int xla) {
246     jj_la = xla; jj_lastpos = jj_scanpos = token;
247     try { return !jj_3_10(); }
248     catch(LookaheadSuccess ls) { return true; }
249     finally { jj_save(9, xla); }
250   }
251
252   final private boolean jj_2_11(int xla) {
253     jj_la = xla; jj_lastpos = jj_scanpos = token;
254     try { return !jj_3_11(); }
255     catch(LookaheadSuccess ls) { return true; }
256     finally { jj_save(10, xla); }
257   }
258
259   final private boolean jj_2_12(int xla) {
260     jj_la = xla; jj_lastpos = jj_scanpos = token;
261     try { return !jj_3_12(); }
262     catch(LookaheadSuccess ls) { return true; }
263     finally { jj_save(11, xla); }
264   }
265
266   final private boolean jj_2_13(int xla) {
267     jj_la = xla; jj_lastpos = jj_scanpos = token;
268     try { return !jj_3_13(); }
269     catch(LookaheadSuccess ls) { return true; }
270     finally { jj_save(12, xla); }
271   }
272
273   final private boolean jj_3_13() {
274     if (jj_scan_token(17)) return true;
275     if (jj_3R_2()) return true;
276     return false;
277   }
278
279   final private boolean jj_3_5() {
280     if (jj_scan_token(13)) return true;
281     if (jj_3R_2()) return true;
282     return false;
283   }
284
285   final private boolean jj_3_11() {
286     if (jj_scan_token(STRING)) return true;
287     return false;
288   }
289
290   final private boolean jj_3_4() {
291     if (jj_scan_token(12)) return true;
292     if (jj_3R_2()) return true;
293     return false;
294   }
295
296   final private boolean jj_3_10() {
297     if (jj_scan_token(DOUBLE)) return true;
298     return false;
299   }
300
301   final private boolean jj_3R_3() {
302     Token xsp;
303     xsp = jj_scanpos;
304     if (jj_3_9()) {
305     jj_scanpos = xsp;
306     if (jj_3_10()) {
307     jj_scanpos = xsp;
308     if (jj_3_11()) {
309     jj_scanpos = xsp;
310     if (jj_3_12()) {
311     jj_scanpos = xsp;
312     if (jj_3_13()) return true;
313     }
314     }
315     }
316     }
317     return false;
318   }
319
320   final private boolean jj_3_9() {
321     if (jj_scan_token(LONG)) return true;
322     return false;
323   }
324
325   final private boolean jj_3_1() {
326     Token xsp;
327     xsp = jj_scanpos;
328     if (jj_3_2()) {
329     jj_scanpos = xsp;
330     if (jj_3_3()) {
331     jj_scanpos = xsp;
332     if (jj_3_4()) {
333     jj_scanpos = xsp;
334     if (jj_3_5()) {
335     jj_scanpos = xsp;
336     if (jj_3_6()) {
337     jj_scanpos = xsp;
338     if (jj_3_7()) {
339     jj_scanpos = xsp;
340     if (jj_3_8()) return true;
341     }
342     }
343     }
344     }
345     }
346     }
347     return false;
348   }
349
350   final private boolean jj_3_2() {
351     if (jj_scan_token(10)) return true;
352     if (jj_3R_2()) return true;
353     return false;
354   }
355
356   final private boolean jj_3_12() {
357     if (jj_scan_token(ELEMENT)) return true;
358     return false;
359   }
360
361   final private boolean jj_3R_2() {
362     if (jj_3R_3()) return true;
363     return false;
364   }
365
366   final private boolean jj_3_8() {
367     if (jj_scan_token(16)) return true;
368     if (jj_3R_2()) return true;
369     return false;
370   }
371
372   final private boolean jj_3_7() {
373     if (jj_scan_token(15)) return true;
374     if (jj_3R_2()) return true;
375     return false;
376   }
377
378   final private boolean jj_3_3() {
379     if (jj_scan_token(11)) return true;
380     if (jj_3R_2()) return true;
381     return false;
382   }
383
384   final private boolean jj_3_6() {
385     if (jj_scan_token(14)) return true;
386     if (jj_3R_2()) return true;
387     return false;
388   }
389
390   public XPathExpressionParserTokenManager token_source;
391   SimpleCharStream jj_input_stream;
392   public Token token, jj_nt;
393   private int jj_ntk;
394   private Token jj_scanpos, jj_lastpos;
395   private int jj_la;
396   public boolean lookingAhead = false;
397   private boolean jj_semLA;
398   private int jj_gen;
399   final private int[] jj_la1 = new int[0];
400   static private int[] jj_la1_0;
401   static {
402       jj_la1_0();
403    }
404    private static void jj_la1_0() {
405       jj_la1_0 = new int[] {};
406    }
407   final private JJCalls[] jj_2_rtns = new JJCalls[13];
408   private boolean jj_rescan = false;
409   private int jj_gc = 0;
410
411   public XPathExpressionParser(java.io.InputStream JavaDoc stream) {
412     jj_input_stream = new SimpleCharStream(stream, 1, 1);
413     token_source = new XPathExpressionParserTokenManager(jj_input_stream);
414     token = new Token();
415     jj_ntk = -1;
416     jj_gen = 0;
417     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
418     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
419   }
420
421   public void ReInit(java.io.InputStream JavaDoc stream) {
422     jj_input_stream.ReInit(stream, 1, 1);
423     token_source.ReInit(jj_input_stream);
424     token = new Token();
425     jj_ntk = -1;
426     jj_gen = 0;
427     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
428     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
429   }
430
431   public XPathExpressionParser(java.io.Reader JavaDoc stream) {
432     jj_input_stream = new SimpleCharStream(stream, 1, 1);
433     token_source = new XPathExpressionParserTokenManager(jj_input_stream);
434     token = new Token();
435     jj_ntk = -1;
436     jj_gen = 0;
437     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
438     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
439   }
440
441   public void ReInit(java.io.Reader JavaDoc stream) {
442     jj_input_stream.ReInit(stream, 1, 1);
443     token_source.ReInit(jj_input_stream);
444     token = new Token();
445     jj_ntk = -1;
446     jj_gen = 0;
447     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
448     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
449   }
450
451   public XPathExpressionParser(XPathExpressionParserTokenManager tm) {
452     token_source = tm;
453     token = new Token();
454     jj_ntk = -1;
455     jj_gen = 0;
456     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
457     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
458   }
459
460   public void ReInit(XPathExpressionParserTokenManager tm) {
461     token_source = tm;
462     token = new Token();
463     jj_ntk = -1;
464     jj_gen = 0;
465     for (int i = 0; i < 0; i++) jj_la1[i] = -1;
466     for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
467   }
468
469   final private Token jj_consume_token(int kind) throws ParseException {
470     Token oldToken;
471     if ((oldToken = token).next != null) token = token.next;
472     else token = token.next = token_source.getNextToken();
473     jj_ntk = -1;
474     if (token.kind == kind) {
475       jj_gen++;
476       if (++jj_gc > 100) {
477         jj_gc = 0;
478         for (int i = 0; i < jj_2_rtns.length; i++) {
479           JJCalls c = jj_2_rtns[i];
480           while (c != null) {
481             if (c.gen < jj_gen) c.first = null;
482             c = c.next;
483           }
484         }
485       }
486       return token;
487     }
488     token = oldToken;
489     jj_kind = kind;
490     throw generateParseException();
491   }
492
493   static private final class LookaheadSuccess extends java.lang.Error JavaDoc { }
494   final private LookaheadSuccess jj_ls = new LookaheadSuccess();
495   final private boolean jj_scan_token(int kind) {
496     if (jj_scanpos == jj_lastpos) {
497       jj_la--;
498       if (jj_scanpos.next == null) {
499         jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
500       } else {
501         jj_lastpos = jj_scanpos = jj_scanpos.next;
502       }
503     } else {
504       jj_scanpos = jj_scanpos.next;
505     }
506     if (jj_rescan) {
507       int i = 0; Token tok = token;
508       while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
509       if (tok != null) jj_add_error_token(kind, i);
510     }
511     if (jj_scanpos.kind != kind) return true;
512     if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
513     return false;
514   }
515
516   final public Token getNextToken() {
517     if (token.next != null) token = token.next;
518     else token = token.next = token_source.getNextToken();
519     jj_ntk = -1;
520     jj_gen++;
521     return token;
522   }
523
524   final public Token getToken(int index) {
525     Token t = lookingAhead ? jj_scanpos : token;
526     for (int i = 0; i < index; i++) {
527       if (t.next != null) t = t.next;
528       else t = t.next = token_source.getNextToken();
529     }
530     return t;
531   }
532
533   final private int jj_ntk() {
534     if ((jj_nt=token.next) == null)
535       return (jj_ntk = (token.next=token_source.getNextToken()).kind);
536     else
537       return (jj_ntk = jj_nt.kind);
538   }
539
540   private java.util.Vector JavaDoc jj_expentries = new java.util.Vector JavaDoc();
541   private int[] jj_expentry;
542   private int jj_kind = -1;
543   private int[] jj_lasttokens = new int[100];
544   private int jj_endpos;
545
546   private void jj_add_error_token(int kind, int pos) {
547     if (pos >= 100) return;
548     if (pos == jj_endpos + 1) {
549       jj_lasttokens[jj_endpos++] = kind;
550     } else if (jj_endpos != 0) {
551       jj_expentry = new int[jj_endpos];
552       for (int i = 0; i < jj_endpos; i++) {
553         jj_expentry[i] = jj_lasttokens[i];
554       }
555       boolean exists = false;
556       for (java.util.Enumeration JavaDoc e = jj_expentries.elements(); e.hasMoreElements();) {
557         int[] oldentry = (int[])(e.nextElement());
558         if (oldentry.length == jj_expentry.length) {
559           exists = true;
560           for (int i = 0; i < jj_expentry.length; i++) {
561             if (oldentry[i] != jj_expentry[i]) {
562               exists = false;
563               break;
564             }
565           }
566           if (exists) break;
567         }
568       }
569       if (!exists) jj_expentries.addElement(jj_expentry);
570       if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
571     }
572   }
573
574   public ParseException generateParseException() {
575     jj_expentries.removeAllElements();
576     boolean[] la1tokens = new boolean[19];
577     for (int i = 0; i < 19; i++) {
578       la1tokens[i] = false;
579     }
580     if (jj_kind >= 0) {
581       la1tokens[jj_kind] = true;
582       jj_kind = -1;
583     }
584     for (int i = 0; i < 0; i++) {
585       if (jj_la1[i] == jj_gen) {
586         for (int j = 0; j < 32; j++) {
587           if ((jj_la1_0[i] & (1<<j)) != 0) {
588             la1tokens[j] = true;
589           }
590         }
591       }
592     }
593     for (int i = 0; i < 19; i++) {
594       if (la1tokens[i]) {
595         jj_expentry = new int[1];
596         jj_expentry[0] = i;
597         jj_expentries.addElement(jj_expentry);
598       }
599     }
600     jj_endpos = 0;
601     jj_rescan_token();
602     jj_add_error_token(0, 0);
603     int[][] exptokseq = new int[jj_expentries.size()][];
604     for (int i = 0; i < jj_expentries.size(); i++) {
605       exptokseq[i] = (int[])jj_expentries.elementAt(i);
606     }
607     return new ParseException(token, exptokseq, tokenImage);
608   }
609
610   final public void enable_tracing() {
611   }
612
613   final public void disable_tracing() {
614   }
615
616   final private void jj_rescan_token() {
617     jj_rescan = true;
618     for (int i = 0; i < 13; i++) {
619       JJCalls p = jj_2_rtns[i];
620       do {
621         if (p.gen > jj_gen) {
622           jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
623           switch (i) {
624             case 0: jj_3_1(); break;
625             case 1: jj_3_2(); break;
626             case 2: jj_3_3(); break;
627             case 3: jj_3_4(); break;
628             case 4: jj_3_5(); break;
629             case 5: jj_3_6(); break;
630             case 6: jj_3_7(); break;
631             case 7: jj_3_8(); break;
632             case 8: jj_3_9(); break;
633             case 9: jj_3_10(); break;
634             case 10: jj_3_11(); break;
635             case 11: jj_3_12(); break;
636             case 12: jj_3_13(); break;
637           }
638         }
639         p = p.next;
640       } while (p != null);
641     }
642     jj_rescan = false;
643   }
644
645   final private void jj_save(int index, int xla) {
646     JJCalls p = jj_2_rtns[index];
647     while (p.gen > jj_gen) {
648       if (p.next == null) { p = p.next = new JJCalls(); break; }
649       p = p.next;
650     }
651     p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
652   }
653
654   static final class JJCalls {
655     int gen;
656     Token first;
657     int arg;
658     JJCalls next;
659   }
660
661 }
662
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