1 |
| |
2 |
| package net.sourceforge.pmd.ast; |
3 |
| |
4 |
| |
5 |
| |
6 |
| |
7 |
| |
8 |
| |
9 |
| public class JavaCharStream implements CharStream { |
10 |
| public static final boolean staticFlag = false; |
11 |
| |
12 |
0
| static final int hexval(char c) throws java.io.IOException {
|
13 |
0
| switch (c) {
|
14 |
0
| case '0':
|
15 |
0
| return 0;
|
16 |
0
| case '1':
|
17 |
0
| return 1;
|
18 |
0
| case '2':
|
19 |
0
| return 2;
|
20 |
0
| case '3':
|
21 |
0
| return 3;
|
22 |
0
| case '4':
|
23 |
0
| return 4;
|
24 |
0
| case '5':
|
25 |
0
| return 5;
|
26 |
0
| case '6':
|
27 |
0
| return 6;
|
28 |
0
| case '7':
|
29 |
0
| return 7;
|
30 |
0
| case '8':
|
31 |
0
| return 8;
|
32 |
0
| case '9':
|
33 |
0
| return 9;
|
34 |
| |
35 |
0
| case 'a':
|
36 |
0
| case 'A':
|
37 |
0
| return 10;
|
38 |
0
| case 'b':
|
39 |
0
| case 'B':
|
40 |
0
| return 11;
|
41 |
0
| case 'c':
|
42 |
0
| case 'C':
|
43 |
0
| return 12;
|
44 |
0
| case 'd':
|
45 |
0
| case 'D':
|
46 |
0
| return 13;
|
47 |
0
| case 'e':
|
48 |
0
| case 'E':
|
49 |
0
| return 14;
|
50 |
0
| case 'f':
|
51 |
0
| case 'F':
|
52 |
0
| return 15;
|
53 |
| } |
54 |
| |
55 |
0
| throw new java.io.IOException();
|
56 |
| } |
57 |
| |
58 |
| public int bufpos = -1; |
59 |
| int bufsize; |
60 |
| int available; |
61 |
| int tokenBegin; |
62 |
| protected int bufline[]; |
63 |
| protected int bufcolumn[]; |
64 |
| |
65 |
| protected int column = 0; |
66 |
| protected int line = 1; |
67 |
| |
68 |
| protected boolean prevCharIsCR = false; |
69 |
| protected boolean prevCharIsLF = false; |
70 |
| |
71 |
| protected java.io.Reader inputStream; |
72 |
| |
73 |
| protected char[] nextCharBuf; |
74 |
| protected char[] buffer; |
75 |
| protected int maxNextCharInd = 0; |
76 |
| protected int nextCharInd = -1; |
77 |
| protected int inBuf = 0; |
78 |
| |
79 |
0
| protected void ExpandBuff(boolean wrapAround) {
|
80 |
0
| char[] newbuffer = new char[bufsize + 2048];
|
81 |
0
| int newbufline[] = new int[bufsize + 2048];
|
82 |
0
| int newbufcolumn[] = new int[bufsize + 2048];
|
83 |
| |
84 |
0
| try {
|
85 |
0
| if (wrapAround) {
|
86 |
0
| System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
|
87 |
0
| System.arraycopy(buffer, 0, newbuffer,
|
88 |
| bufsize - tokenBegin, bufpos); |
89 |
0
| buffer = newbuffer;
|
90 |
| |
91 |
0
| System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
|
92 |
0
| System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
|
93 |
0
| bufline = newbufline;
|
94 |
| |
95 |
0
| System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
|
96 |
0
| System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
|
97 |
0
| bufcolumn = newbufcolumn;
|
98 |
| |
99 |
0
| bufpos += (bufsize - tokenBegin);
|
100 |
| } else { |
101 |
0
| System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
|
102 |
0
| buffer = newbuffer;
|
103 |
| |
104 |
0
| System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
|
105 |
0
| bufline = newbufline;
|
106 |
| |
107 |
0
| System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
|
108 |
0
| bufcolumn = newbufcolumn;
|
109 |
| |
110 |
0
| bufpos -= tokenBegin;
|
111 |
| } |
112 |
| } catch (Throwable t) { |
113 |
0
| throw new RuntimeException(t.getMessage());
|
114 |
| } |
115 |
| |
116 |
0
| available = (bufsize += 2048);
|
117 |
0
| tokenBegin = 0;
|
118 |
| } |
119 |
| |
120 |
2532
| protected void FillBuff() throws java.io.IOException {
|
121 |
2532
| int i;
|
122 |
2532
| if (maxNextCharInd == 4096)
|
123 |
0
| maxNextCharInd = nextCharInd = 0;
|
124 |
| |
125 |
2532
| try {
|
126 |
?
| if ((i = inputStream.read(nextCharBuf, maxNextCharInd,
|
127 |
| 4096 - maxNextCharInd)) == -1) { |
128 |
1250
| inputStream.close();
|
129 |
1250
| throw new java.io.IOException();
|
130 |
| } else |
131 |
1258
| maxNextCharInd += i;
|
132 |
1258
| return;
|
133 |
| } catch (java.io.IOException e) { |
134 |
1274
| if (bufpos != 0) {
|
135 |
24
| --bufpos;
|
136 |
24
| backup(0);
|
137 |
| } else { |
138 |
1250
| bufline[bufpos] = line;
|
139 |
1250
| bufcolumn[bufpos] = column;
|
140 |
| } |
141 |
1274
| throw e;
|
142 |
| } |
143 |
| } |
144 |
| |
145 |
120381
| protected char ReadByte() throws java.io.IOException {
|
146 |
120381
| if (++nextCharInd >= maxNextCharInd)
|
147 |
2532
| FillBuff();
|
148 |
| |
149 |
119107
| return nextCharBuf[nextCharInd];
|
150 |
| } |
151 |
| |
152 |
64871
| public char BeginToken() throws java.io.IOException {
|
153 |
64871
| if (inBuf > 0) {
|
154 |
16866
| --inBuf;
|
155 |
| |
156 |
16866
| if (++bufpos == bufsize)
|
157 |
0
| bufpos = 0;
|
158 |
| |
159 |
16866
| tokenBegin = bufpos;
|
160 |
16866
| return buffer[bufpos];
|
161 |
| } |
162 |
| |
163 |
48005
| tokenBegin = 0;
|
164 |
48005
| bufpos = -1;
|
165 |
| |
166 |
48005
| return readChar();
|
167 |
| } |
168 |
| |
169 |
0
| protected void AdjustBuffSize() {
|
170 |
0
| if (available == bufsize) {
|
171 |
0
| if (tokenBegin > 2048) {
|
172 |
0
| bufpos = 0;
|
173 |
0
| available = tokenBegin;
|
174 |
| } else |
175 |
0
| ExpandBuff(false);
|
176 |
0
| } else if (available > tokenBegin)
|
177 |
0
| available = bufsize;
|
178 |
0
| else if ((tokenBegin - available) < 2048)
|
179 |
0
| ExpandBuff(true);
|
180 |
| else |
181 |
0
| available = tokenBegin;
|
182 |
| } |
183 |
| |
184 |
119107
| protected void UpdateLineColumn(char c) {
|
185 |
119107
| column++;
|
186 |
| |
187 |
119107
| if (prevCharIsLF) {
|
188 |
5785
| prevCharIsLF = false;
|
189 |
5785
| line += (column = 1);
|
190 |
113322
| } else if (prevCharIsCR) {
|
191 |
0
| prevCharIsCR = false;
|
192 |
0
| if (c == '\n') {
|
193 |
0
| prevCharIsLF = true;
|
194 |
| } else |
195 |
0
| line += (column = 1);
|
196 |
| } |
197 |
| |
198 |
119107
| switch (c) {
|
199 |
0
| case '\r':
|
200 |
0
| prevCharIsCR = true;
|
201 |
0
| break;
|
202 |
6859
| case '\n':
|
203 |
6859
| prevCharIsLF = true;
|
204 |
6859
| break;
|
205 |
149
| case '\t':
|
206 |
149
| column--;
|
207 |
149
| column += (8 - (column & 07));
|
208 |
149
| break;
|
209 |
112099
| default :
|
210 |
112099
| break;
|
211 |
| } |
212 |
| |
213 |
119107
| bufline[bufpos] = line;
|
214 |
119107
| bufcolumn[bufpos] = column;
|
215 |
| } |
216 |
| |
217 |
120408
| public char readChar() throws java.io.IOException {
|
218 |
120408
| if (inBuf > 0) {
|
219 |
29
| --inBuf;
|
220 |
| |
221 |
29
| if (++bufpos == bufsize)
|
222 |
0
| bufpos = 0;
|
223 |
| |
224 |
29
| return buffer[bufpos];
|
225 |
| } |
226 |
| |
227 |
120379
| char c;
|
228 |
| |
229 |
120379
| if (++bufpos == available)
|
230 |
0
| AdjustBuffSize();
|
231 |
| |
232 |
?
| if ((buffer[bufpos] = c = ReadByte()) == '\\') {
|
233 |
2
| UpdateLineColumn(c);
|
234 |
| |
235 |
2
| int backSlashCnt = 1;
|
236 |
| |
237 |
2
| for (; ;)
|
238 |
| { |
239 |
2
| if (++bufpos == available)
|
240 |
0
| AdjustBuffSize();
|
241 |
| |
242 |
2
| try {
|
243 |
?
| if ((buffer[bufpos] = c = ReadByte()) != '\\') {
|
244 |
2
| UpdateLineColumn(c);
|
245 |
| |
246 |
2
| if ((c == 'u') && ((backSlashCnt & 1) == 1)) {
|
247 |
0
| if (--bufpos < 0)
|
248 |
0
| bufpos = bufsize - 1;
|
249 |
| |
250 |
0
| break;
|
251 |
| } |
252 |
| |
253 |
2
| backup(backSlashCnt);
|
254 |
2
| return '\\';
|
255 |
| } |
256 |
| } catch (java.io.IOException e) { |
257 |
0
| if (backSlashCnt > 1)
|
258 |
0
| backup(backSlashCnt);
|
259 |
| |
260 |
0
| return '\\';
|
261 |
| } |
262 |
| |
263 |
0
| UpdateLineColumn(c);
|
264 |
0
| backSlashCnt++;
|
265 |
| } |
266 |
| |
267 |
| |
268 |
0
| try {
|
269 |
0
| while ((c = ReadByte()) == 'u')
|
270 |
0
| ++column;
|
271 |
| |
272 |
0
| buffer[bufpos] = c = (char) (hexval(c) << 12 |
|
273 |
| hexval(ReadByte()) << 8 | |
274 |
| hexval(ReadByte()) << 4 | |
275 |
| hexval(ReadByte())); |
276 |
| |
277 |
0
| column += 4;
|
278 |
| } catch (java.io.IOException e) { |
279 |
0
| throw new RuntimeException("Invalid escape character at line " + line +
|
280 |
| " column " + column + "."); |
281 |
| } |
282 |
| |
283 |
0
| if (backSlashCnt == 1)
|
284 |
0
| return c;
|
285 |
| else { |
286 |
0
| backup(backSlashCnt - 1);
|
287 |
0
| return '\\';
|
288 |
| } |
289 |
| } else { |
290 |
119103
| UpdateLineColumn(c);
|
291 |
119103
| return (c);
|
292 |
| } |
293 |
| } |
294 |
| |
295 |
| |
296 |
| |
297 |
| |
298 |
| |
299 |
| |
300 |
0
| public int getColumn() {
|
301 |
0
| return bufcolumn[bufpos];
|
302 |
| } |
303 |
| |
304 |
| |
305 |
| |
306 |
| |
307 |
| |
308 |
| |
309 |
0
| public int getLine() {
|
310 |
0
| return bufline[bufpos];
|
311 |
| } |
312 |
| |
313 |
64848
| public int getEndColumn() {
|
314 |
64848
| return bufcolumn[bufpos];
|
315 |
| } |
316 |
| |
317 |
64848
| public int getEndLine() {
|
318 |
64848
| return bufline[bufpos];
|
319 |
| } |
320 |
| |
321 |
64848
| public int getBeginColumn() {
|
322 |
64848
| return bufcolumn[tokenBegin];
|
323 |
| } |
324 |
| |
325 |
64848
| public int getBeginLine() {
|
326 |
64848
| return bufline[tokenBegin];
|
327 |
| } |
328 |
| |
329 |
16908
| public void backup(int amount) {
|
330 |
| |
331 |
16908
| inBuf += amount;
|
332 |
16908
| if ((bufpos -= amount) < 0)
|
333 |
0
| bufpos += bufsize;
|
334 |
| } |
335 |
| |
336 |
1258
| public JavaCharStream(java.io.Reader dstream,
|
337 |
| int startline, int startcolumn, int buffersize) { |
338 |
1258
| inputStream = dstream;
|
339 |
1258
| line = startline;
|
340 |
1258
| column = startcolumn - 1;
|
341 |
| |
342 |
1258
| available = bufsize = buffersize;
|
343 |
1258
| buffer = new char[buffersize];
|
344 |
1258
| bufline = new int[buffersize];
|
345 |
1258
| bufcolumn = new int[buffersize];
|
346 |
1258
| nextCharBuf = new char[4096];
|
347 |
| } |
348 |
| |
349 |
0
| public JavaCharStream(java.io.Reader dstream,
|
350 |
| int startline, int startcolumn) { |
351 |
0
| this(dstream, startline, startcolumn, 4096);
|
352 |
| } |
353 |
| |
354 |
1258
| public JavaCharStream(java.io.Reader dstream) {
|
355 |
1258
| this(dstream, 1, 1, 4096);
|
356 |
| } |
357 |
| |
358 |
0
| public void ReInit(java.io.Reader dstream,
|
359 |
| int startline, int startcolumn, int buffersize) { |
360 |
0
| inputStream = dstream;
|
361 |
0
| line = startline;
|
362 |
0
| column = startcolumn - 1;
|
363 |
| |
364 |
0
| if (buffer == null || buffersize != buffer.length) {
|
365 |
0
| available = bufsize = buffersize;
|
366 |
0
| buffer = new char[buffersize];
|
367 |
0
| bufline = new int[buffersize];
|
368 |
0
| bufcolumn = new int[buffersize];
|
369 |
0
| nextCharBuf = new char[4096];
|
370 |
| } |
371 |
0
| prevCharIsLF = prevCharIsCR = false;
|
372 |
0
| tokenBegin = inBuf = maxNextCharInd = 0;
|
373 |
0
| nextCharInd = bufpos = -1;
|
374 |
| } |
375 |
| |
376 |
0
| public void ReInit(java.io.Reader dstream,
|
377 |
| int startline, int startcolumn) { |
378 |
0
| ReInit(dstream, startline, startcolumn, 4096);
|
379 |
| } |
380 |
| |
381 |
0
| public void ReInit(java.io.Reader dstream) {
|
382 |
0
| ReInit(dstream, 1, 1, 4096);
|
383 |
| } |
384 |
| |
385 |
0
| public JavaCharStream(java.io.InputStream dstream, int startline,
|
386 |
| int startcolumn, int buffersize) { |
387 |
0
| this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);
|
388 |
| } |
389 |
| |
390 |
0
| public JavaCharStream(java.io.InputStream dstream, int startline,
|
391 |
| int startcolumn) { |
392 |
0
| this(dstream, startline, startcolumn, 4096);
|
393 |
| } |
394 |
| |
395 |
0
| public JavaCharStream(java.io.InputStream dstream) {
|
396 |
0
| this(dstream, 1, 1, 4096);
|
397 |
| } |
398 |
| |
399 |
0
| public void ReInit(java.io.InputStream dstream, int startline,
|
400 |
| int startcolumn, int buffersize) { |
401 |
0
| ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);
|
402 |
| } |
403 |
| |
404 |
0
| public void ReInit(java.io.InputStream dstream, int startline,
|
405 |
| int startcolumn) { |
406 |
0
| ReInit(dstream, startline, startcolumn, 4096);
|
407 |
| } |
408 |
| |
409 |
0
| public void ReInit(java.io.InputStream dstream) {
|
410 |
0
| ReInit(dstream, 1, 1, 4096);
|
411 |
| } |
412 |
| |
413 |
40904
| public String GetImage() {
|
414 |
40904
| if (bufpos >= tokenBegin)
|
415 |
40904
| return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
|
416 |
| else |
417 |
0
| return new String(buffer, tokenBegin, bufsize - tokenBegin) +
|
418 |
| new String(buffer, 0, bufpos + 1); |
419 |
| } |
420 |
| |
421 |
5
| public char[] GetSuffix(int len) {
|
422 |
5
| char[] ret = new char[len];
|
423 |
| |
424 |
5
| if ((bufpos + 1) >= len)
|
425 |
5
| System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
|
426 |
| else { |
427 |
0
| System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0,
|
428 |
| len - bufpos - 1); |
429 |
0
| System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
|
430 |
| } |
431 |
| |
432 |
5
| return ret;
|
433 |
| } |
434 |
| |
435 |
0
| public void Done() {
|
436 |
0
| nextCharBuf = null;
|
437 |
0
| buffer = null;
|
438 |
0
| bufline = null;
|
439 |
0
| bufcolumn = null;
|
440 |
| } |
441 |
| |
442 |
| |
443 |
| |
444 |
| |
445 |
0
| public void adjustBeginLineColumn(int newLine, int newCol) {
|
446 |
0
| int start = tokenBegin;
|
447 |
0
| int len;
|
448 |
| |
449 |
0
| if (bufpos >= tokenBegin) {
|
450 |
0
| len = bufpos - tokenBegin + inBuf + 1;
|
451 |
| } else { |
452 |
0
| len = bufsize - tokenBegin + bufpos + 1 + inBuf;
|
453 |
| } |
454 |
| |
455 |
0
| int i = 0, j = 0, k = 0;
|
456 |
0
| int nextColDiff = 0, columnDiff = 0;
|
457 |
| |
458 |
0
| while (i < len &&
|
459 |
| bufline[j = start % bufsize] == bufline[k = ++start % bufsize]) { |
460 |
0
| bufline[j] = newLine;
|
461 |
0
| nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
|
462 |
0
| bufcolumn[j] = newCol + columnDiff;
|
463 |
0
| columnDiff = nextColDiff;
|
464 |
0
| i++;
|
465 |
| } |
466 |
| |
467 |
0
| if (i < len) {
|
468 |
0
| bufline[j] = newLine++;
|
469 |
0
| bufcolumn[j] = newCol + columnDiff;
|
470 |
| |
471 |
0
| while (i++ < len) {
|
472 |
0
| if (bufline[j = start % bufsize] != bufline[++start % bufsize])
|
473 |
0
| bufline[j] = newLine++;
|
474 |
| else |
475 |
0
| bufline[j] = newLine;
|
476 |
| } |
477 |
| } |
478 |
| |
479 |
0
| line = bufline[j];
|
480 |
0
| column = bufcolumn[j];
|
481 |
| } |
482 |
| |
483 |
| } |