|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* This file is part of PHP-Yacc package. |
|
4
|
|
|
* |
|
5
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
6
|
|
|
* file that was distributed with this source code. |
|
7
|
|
|
*/ |
|
8
|
|
|
declare(strict_types=1); |
|
9
|
|
|
|
|
10
|
|
|
namespace PhpYacc\Compress; |
|
11
|
|
|
|
|
12
|
|
|
use PhpYacc\Grammar\Context; |
|
13
|
|
|
use PhpYacc\Grammar\Symbol; |
|
14
|
|
|
use PhpYacc\Support\Utils; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* Class Compress |
|
18
|
|
|
*/ |
|
19
|
|
|
class Compress |
|
20
|
|
|
{ |
|
21
|
|
|
const UNEXPECTED = 32767; |
|
22
|
|
|
const DEFAULT = -32766; |
|
23
|
|
|
const VACANT = -32768; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var Context |
|
27
|
|
|
*/ |
|
28
|
|
|
private $context; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* @var CompressResult |
|
32
|
|
|
*/ |
|
33
|
|
|
private $result; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* @param Context $context |
|
37
|
|
|
* |
|
38
|
|
|
* @return CompressResult |
|
39
|
|
|
*/ |
|
40
|
|
|
public function compress(Context $context) |
|
|
|
|
|
|
41
|
|
|
{ |
|
42
|
|
|
$this->result = new CompressResult(); |
|
43
|
|
|
$this->context = $context; |
|
44
|
|
|
|
|
45
|
|
|
$this->makeupTable2(); |
|
46
|
|
|
|
|
47
|
|
|
return $this->result; |
|
48
|
|
|
} |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* @return void |
|
52
|
|
|
*/ |
|
53
|
|
|
private function computePreImages() |
|
54
|
|
|
{ |
|
55
|
|
|
/** @var PreImage[] $preImages */ |
|
56
|
|
|
$preImages = []; |
|
57
|
|
|
|
|
58
|
|
|
for ($i = 0; $i < $this->context->countStates; $i++) { |
|
59
|
|
|
$preImages[$i] = new PreImage($i); |
|
60
|
|
|
} |
|
61
|
|
|
|
|
62
|
|
|
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
63
|
|
|
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
64
|
|
|
$s = $this->context->classAction[$i][$j]; |
|
65
|
|
|
if ($s > 0) { |
|
66
|
|
|
$preImages[$s]->classes[$preImages[$s]->length++] = $i; |
|
67
|
|
|
} |
|
68
|
|
|
} |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
|
|
Utils::stableSort($preImages, PreImage::class.'::compare'); |
|
72
|
|
|
|
|
73
|
|
|
$this->context->primof = \array_fill(0, $this->context->countStates, 0); |
|
74
|
|
|
$this->context->prims = \array_fill(0, $this->context->countStates, 0); |
|
75
|
|
|
$this->context->countPrims = 0; |
|
76
|
|
|
for ($i = 0; $i < $this->context->countStates;) { |
|
77
|
|
|
$p = $preImages[$i]; |
|
78
|
|
|
$this->context->prims[$this->context->countPrims] = $p; |
|
79
|
|
|
for (; $i < $this->context->countStates && PreImage::compare($p, $preImages[$i]) === 0; $i++) { |
|
80
|
|
|
$this->context->primof[$preImages[$i]->index] = $p; |
|
81
|
|
|
} |
|
82
|
|
|
$p->index = $this->context->countPrims++; |
|
83
|
|
|
} |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
/** |
|
87
|
|
|
* @param array $t |
|
88
|
|
|
* @param int $count |
|
89
|
|
|
* |
|
90
|
|
|
* @return array |
|
91
|
|
|
*/ |
|
92
|
|
|
private function encodeShiftReduce(array $t, int $count): array |
|
93
|
|
|
{ |
|
94
|
|
|
for ($i = 0; $i < $count; $i++) { |
|
95
|
|
|
if ($t[$i] >= $this->context->countNonLeafStates) { |
|
96
|
|
|
$t[$i] = $this->context->countNonLeafStates + $this->context->defaultAct[$t[$i]]; |
|
97
|
|
|
} |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
|
|
return $t; |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
/** |
|
104
|
|
|
* @return void |
|
105
|
|
|
*/ |
|
106
|
|
|
private function makeupTable2() |
|
107
|
|
|
{ |
|
108
|
|
|
$this->context->termAction = \array_fill(0, $this->context->countNonLeafStates, 0); |
|
109
|
|
|
$this->context->classAction = \array_fill(0, $this->context->countNonLeafStates * 2, 0); |
|
110
|
|
|
$this->context->nonTermGoto = \array_fill(0, $this->context->countNonLeafStates, 0); |
|
111
|
|
|
$this->context->defaultAct = \array_fill(0, $this->context->countStates, 0); |
|
112
|
|
|
$this->context->defaultGoto = \array_fill(0, $this->context->countNonTerminals, 0); |
|
113
|
|
|
|
|
114
|
|
|
$this->resetFrequency(); |
|
115
|
|
|
$this->context->stateImageSorted = \array_fill(0, $this->context->countNonLeafStates, 0); |
|
116
|
|
|
$this->context->classOf = \array_fill(0, $this->context->countStates, 0); |
|
117
|
|
|
|
|
118
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
119
|
|
|
$this->context->termAction[$i] = \array_fill(0, $this->context->countTerminals, self::VACANT); |
|
120
|
|
|
$this->context->nonTermGoto[$i] = \array_fill(0, $this->context->countNonTerminals, self::VACANT); |
|
121
|
|
|
|
|
122
|
|
|
foreach ($this->context->states[$i]->shifts as $shift) { |
|
123
|
|
|
if ($shift->through->isTerminal) { |
|
124
|
|
|
$this->context->termAction[$i][$shift->through->code] = $shift->number; |
|
125
|
|
|
} else { |
|
126
|
|
|
$this->context->nonTermGoto[$i][$this->nb($shift->through)] = $shift->number; |
|
127
|
|
|
} |
|
128
|
|
|
} |
|
129
|
|
|
foreach ($this->context->states[$i]->reduce as $reduce) { |
|
130
|
|
|
if ($reduce->symbol->isNilSymbol()) { |
|
131
|
|
|
break; |
|
132
|
|
|
} |
|
133
|
|
|
$this->context->termAction[$i][$reduce->symbol->code] = -$this->encodeRederr($reduce->number); |
|
134
|
|
|
} |
|
135
|
|
|
$this->context->stateImageSorted[$i] = $i; |
|
136
|
|
|
} |
|
137
|
|
|
|
|
138
|
|
|
foreach ($this->context->states as $key => $state) { |
|
139
|
|
|
$r = null; |
|
140
|
|
|
foreach ($state->reduce as $r) { |
|
141
|
|
|
if ($r->symbol->isNilSymbol()) { |
|
142
|
|
|
break; |
|
143
|
|
|
} |
|
144
|
|
|
} |
|
145
|
|
|
$this->context->defaultAct[$key] = $this->encodeRederr($r->number); |
|
146
|
|
|
} |
|
147
|
|
|
|
|
148
|
|
|
for ($j = 0; $j < $this->context->countNonTerminals; $j++) { |
|
149
|
|
|
$max = 0; |
|
150
|
|
|
$maxst = self::VACANT; |
|
151
|
|
|
$this->resetFrequency(); |
|
152
|
|
|
|
|
153
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
154
|
|
|
$st = $this->context->nonTermGoto[$i][$j]; |
|
155
|
|
|
if ($st > 0) { |
|
156
|
|
|
$this->context->frequency[$st]++; |
|
157
|
|
|
if ($this->context->frequency[$st] > $max) { |
|
158
|
|
|
$max = $this->context->frequency[$st]; |
|
159
|
|
|
$maxst = $st; |
|
160
|
|
|
} |
|
161
|
|
|
} |
|
162
|
|
|
} |
|
163
|
|
|
$this->context->defaultGoto[$j] = $maxst; |
|
164
|
|
|
} |
|
165
|
|
|
// 847 |
|
166
|
|
|
|
|
167
|
|
|
Utils::stableSort($this->context->stateImageSorted, [$this, 'cmpStates']); |
|
168
|
|
|
|
|
169
|
|
|
$j = 0; |
|
170
|
|
|
|
|
171
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates;) { |
|
172
|
|
|
$k = $this->context->stateImageSorted[$i]; |
|
173
|
|
|
$this->context->classAction[$j] = $this->context->termAction[$k]; |
|
174
|
|
|
for (; $i < $this->context->countNonLeafStates && $this->cmpStates($this->context->stateImageSorted[$i], $k) === 0; $i++) { |
|
175
|
|
|
$this->context->classOf[$this->context->stateImageSorted[$i]] = $j; |
|
176
|
|
|
} |
|
177
|
|
|
$j++; |
|
178
|
|
|
} |
|
179
|
|
|
$this->context->countClasses = $j; |
|
180
|
|
|
|
|
181
|
|
|
if ($this->context->debug) { |
|
182
|
|
|
$this->context->debug("State=>class:\n"); |
|
183
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
184
|
|
|
if ($i % 10 === 0) { |
|
185
|
|
|
$this->context->debug("\n"); |
|
186
|
|
|
} |
|
187
|
|
|
$this->context->debug(\sprintf('%3d=>%-3d ', $i, $this->context->classOf[$i])); |
|
188
|
|
|
} |
|
189
|
|
|
$this->context->debug("\n"); |
|
190
|
|
|
} |
|
191
|
|
|
|
|
192
|
|
|
$this->computePreImages(); |
|
193
|
|
|
|
|
194
|
|
|
if ($this->context->debug) { |
|
195
|
|
|
$this->printTable(); |
|
196
|
|
|
} |
|
197
|
|
|
|
|
198
|
|
|
$this->extractCommon(); |
|
199
|
|
|
|
|
200
|
|
|
$this->authodoxTable(); |
|
201
|
|
|
} |
|
202
|
|
|
|
|
203
|
|
|
/** |
|
204
|
|
|
* @return void |
|
205
|
|
|
*/ |
|
206
|
|
|
private function printTable() |
|
207
|
|
|
{ |
|
208
|
|
|
$this->context->debug("\nTerminal action:\n"); |
|
209
|
|
|
$this->context->debug(\sprintf('%8.8s', 'T\\S')); |
|
210
|
|
|
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
211
|
|
|
$this->context->debug(\sprintf('%4d', $i)); |
|
212
|
|
|
} |
|
213
|
|
|
$this->context->debug("\n"); |
|
214
|
|
|
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
215
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
216
|
|
|
if (self::VACANT !== $this->context->termAction[$i][$j]) { |
|
217
|
|
|
break; |
|
218
|
|
|
} |
|
219
|
|
|
} |
|
220
|
|
View Code Duplication |
if ($i < $this->context->countNonLeafStates) { |
|
|
|
|
|
|
221
|
|
|
$this->context->debug(\sprintf('%8.8s', $this->context->symbol($j)->name)); |
|
222
|
|
|
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
223
|
|
|
$this->context->debug(Utils::printAction($this->context->classAction[$i][$j])); |
|
224
|
|
|
} |
|
225
|
|
|
$this->context->debug("\n"); |
|
226
|
|
|
} |
|
227
|
|
|
} |
|
228
|
|
|
|
|
229
|
|
|
$this->context->debug("\nNonterminal GOTO table:\n"); |
|
230
|
|
|
$this->context->debug(\sprintf('%8.8s', 'T\\S')); |
|
231
|
|
View Code Duplication |
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
|
|
|
|
|
232
|
|
|
$this->context->debug(\sprintf('%4d', $i)); |
|
233
|
|
|
} |
|
234
|
|
|
$this->context->debug("\n"); |
|
235
|
|
|
foreach ($this->context->nonterminals as $symbol) { |
|
236
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
237
|
|
|
if ($this->context->nonTermGoto[$i][$this->nb($symbol)] > 0) { |
|
238
|
|
|
break; |
|
239
|
|
|
} |
|
240
|
|
|
} |
|
241
|
|
View Code Duplication |
if ($i < $this->context->countNonLeafStates) { |
|
|
|
|
|
|
242
|
|
|
$this->context->debug(\sprintf('%8.8s', $symbol->name)); |
|
243
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
244
|
|
|
$this->context->debug(Utils::printAction($this->context->nonTermGoto[$i][$this->nb($symbol)])); |
|
245
|
|
|
} |
|
246
|
|
|
$this->context->debug("\n"); |
|
247
|
|
|
} |
|
248
|
|
|
} |
|
249
|
|
|
|
|
250
|
|
|
$this->context->debug("\nNonterminal GOTO table:\n"); |
|
251
|
|
|
$this->context->debug(\sprintf('%8.8s default', 'T\\S')); |
|
252
|
|
View Code Duplication |
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
|
|
|
|
|
253
|
|
|
$this->context->debug(\sprintf('%4d', $i)); |
|
254
|
|
|
} |
|
255
|
|
|
$this->context->debug("\n"); |
|
256
|
|
|
foreach ($this->context->nonterminals as $symbol) { |
|
257
|
|
|
$nb = $this->nb($symbol); |
|
258
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
259
|
|
|
if ($this->context->nonTermGoto[$i][$nb] > 0) { |
|
260
|
|
|
break; |
|
261
|
|
|
} |
|
262
|
|
|
} |
|
263
|
|
|
if ($i < $this->context->countNonLeafStates) { |
|
264
|
|
|
$this->context->debug(\sprintf('%8.8s', $symbol->name)); |
|
265
|
|
|
$this->context->debug(\sprintf('%8d', $this->context->defaultGoto[$nb])); |
|
266
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
267
|
|
|
if ($this->context->nonTermGoto[$i][$nb] === $this->context->defaultGoto[$nb]) { |
|
268
|
|
|
$this->context->debug(' = '); |
|
269
|
|
|
} else { |
|
270
|
|
|
$this->context->debug(Utils::printAction($this->context->nonTermGoto[$i][$nb])); |
|
271
|
|
|
} |
|
272
|
|
|
} |
|
273
|
|
|
$this->context->debug("\n"); |
|
274
|
|
|
} |
|
275
|
|
|
} |
|
276
|
|
|
} |
|
277
|
|
|
|
|
278
|
|
|
/** |
|
279
|
|
|
* @return void |
|
280
|
|
|
*/ |
|
281
|
|
|
private function extractCommon() |
|
282
|
|
|
{ |
|
283
|
|
|
$this->context->class2nd = \array_fill(0, $this->context->countClasses, -1); |
|
284
|
|
|
|
|
285
|
|
|
$auxList = null; |
|
286
|
|
|
$n = 0; |
|
287
|
|
|
|
|
288
|
|
|
for ($i = 0; $i < $this->context->countPrims; $i++) { |
|
289
|
|
|
$preImage = $this->context->prims[$i]; |
|
290
|
|
|
if ($preImage->length < 2) { |
|
291
|
|
|
continue; |
|
292
|
|
|
} |
|
293
|
|
|
$p = new Auxiliary(); |
|
294
|
|
|
$this->bestCovering($p, $preImage); |
|
295
|
|
|
if ($p->gain < 1) { |
|
296
|
|
|
continue; |
|
297
|
|
|
} |
|
298
|
|
|
$p->preImage = $preImage; |
|
299
|
|
|
$p->next = $auxList; |
|
300
|
|
|
$auxList = $p; |
|
301
|
|
|
$n++; |
|
302
|
|
|
} |
|
303
|
|
|
|
|
304
|
|
|
if ($this->context->debug) { |
|
305
|
|
|
$this->context->debug("\nNumber of prims: {$this->context->countPrims}\n"); |
|
306
|
|
|
$this->context->debug("\nCandidates of aux table:\n"); |
|
307
|
|
|
for ($p = $auxList; $p !== null; $p = $p->next) { |
|
308
|
|
|
$this->context->debug(\sprintf('Aux = (%d) ', $p->gain)); |
|
309
|
|
|
$f = 0; |
|
310
|
|
View Code Duplication |
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
|
|
|
|
|
311
|
|
|
if (self::VACANT !== $p->table[$j]) { |
|
312
|
|
|
$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $p->table[$j])); |
|
313
|
|
|
} |
|
314
|
|
|
} |
|
315
|
|
|
$this->context->debug(' * '); |
|
316
|
|
|
for ($j = 0; $j < $p->preImage->length; $j++) { |
|
317
|
|
|
$this->context->debug(\sprintf($j ? ',%d' : '%d', $p->preImage->classes[$j])); |
|
318
|
|
|
} |
|
319
|
|
|
$this->context->debug("\n"); |
|
320
|
|
|
} |
|
321
|
|
|
$this->context->debug("Used aux table:\n"); |
|
322
|
|
|
} |
|
323
|
|
|
$this->context->countAux = $this->context->countClasses; |
|
324
|
|
|
for (;;) { |
|
325
|
|
|
$maxGain = 0; |
|
326
|
|
|
$maxAux = null; |
|
327
|
|
|
$pre = null; |
|
328
|
|
|
$maxPreImage = null; |
|
329
|
|
|
for ($p = $auxList; $p != null; $p = $p->next) { |
|
330
|
|
|
if ($p->gain > $maxGain) { |
|
331
|
|
|
$maxGain = $p->gain; |
|
332
|
|
|
$maxAux = $p; |
|
333
|
|
|
$maxPreImage = $pre; |
|
334
|
|
|
} |
|
335
|
|
|
/** @var Auxiliary $pre */ |
|
336
|
|
|
$pre = $p; |
|
337
|
|
|
} |
|
338
|
|
|
|
|
339
|
|
|
if ($maxAux === null) { |
|
340
|
|
|
break; |
|
341
|
|
|
} |
|
342
|
|
|
|
|
343
|
|
|
if ($maxPreImage) { |
|
344
|
|
|
$maxPreImage->next = $maxAux->next; |
|
345
|
|
|
} else { |
|
346
|
|
|
$auxList = $maxAux->next; |
|
347
|
|
|
} |
|
348
|
|
|
|
|
349
|
|
|
$maxAux->index = $this->context->countAux; |
|
|
|
|
|
|
350
|
|
|
|
|
351
|
|
|
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
|
352
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
|
353
|
|
|
if (Utils::eqRow($this->context->classAction[$cl], $maxAux->table, $this->context->countTerminals)) { |
|
354
|
|
|
$maxAux->index = $cl; |
|
355
|
|
|
} |
|
356
|
|
|
} |
|
357
|
|
|
|
|
358
|
|
|
if ($maxAux->index >= $this->context->countAux) { |
|
359
|
|
|
$this->context->classAction[$this->context->countAux++] = $maxAux->table; |
|
360
|
|
|
} |
|
361
|
|
|
|
|
362
|
|
|
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
|
363
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
|
364
|
|
|
if ($this->context->class2nd[$cl] < 0) { |
|
365
|
|
|
$this->context->class2nd[$cl] = $maxAux->index; |
|
366
|
|
|
} |
|
367
|
|
|
} |
|
368
|
|
|
|
|
369
|
|
|
if ($this->context->debug) { |
|
370
|
|
|
$this->context->debug(\sprintf('Selected aux[%d]: (%d) ', $maxAux->index, $maxAux->gain)); |
|
371
|
|
|
$f = 0; |
|
372
|
|
View Code Duplication |
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
|
|
|
|
|
373
|
|
|
if (self::VACANT !== $maxAux->table[$j]) { |
|
374
|
|
|
$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $maxAux->table[$j])); |
|
375
|
|
|
} |
|
376
|
|
|
} |
|
377
|
|
|
$this->context->debug(' * '); |
|
378
|
|
|
$f = 0; |
|
379
|
|
|
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
|
380
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
|
381
|
|
|
if ($this->context->class2nd[$cl] === $maxAux->index) { |
|
382
|
|
|
$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $cl)); |
|
383
|
|
|
} |
|
384
|
|
|
} |
|
385
|
|
|
$this->context->debug("\n"); |
|
386
|
|
|
} |
|
387
|
|
|
|
|
388
|
|
|
for ($p = $auxList; $p != null; $p = $p->next) { |
|
389
|
|
|
$this->bestCovering($p, $p->preImage); |
|
390
|
|
|
} |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
if ($this->context->debug) { |
|
394
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
395
|
|
|
if ($this->context->class2nd[$this->context->classOf[$i]] >= 0 && $this->context->class2nd[$this->context->classOf[$i]] !== $this->context->classOf[$i]) { |
|
396
|
|
|
$this->context->debug(\sprintf("state %d (class %d): aux[%d]\n", $i, $this->context->classOf[$i], $this->context->class2nd[$this->context->classOf[$i]])); |
|
397
|
|
|
} else { |
|
398
|
|
|
$this->context->debug(\sprintf("state %d (class %d)\n", $i, $this->context->classOf[$i])); |
|
399
|
|
|
} |
|
400
|
|
|
} |
|
401
|
|
|
} |
|
402
|
|
|
} |
|
403
|
|
|
|
|
404
|
|
|
/** |
|
405
|
|
|
* @param Auxiliary $aux |
|
406
|
|
|
* @param PreImage $prim |
|
407
|
|
|
*/ |
|
408
|
|
|
private function bestCovering(Auxiliary $aux, PreImage $prim) |
|
409
|
|
|
{ |
|
410
|
|
|
$this->resetFrequency(); |
|
411
|
|
|
$gain = 0; |
|
412
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
|
413
|
|
|
$max = 0; |
|
414
|
|
|
$maxAction = -1; |
|
415
|
|
|
$countVacant = 0; |
|
416
|
|
|
|
|
417
|
|
|
for ($j = 0; $j < $prim->length; $j++) { |
|
418
|
|
|
if ($this->context->class2nd[$prim->classes[$j]] < 0) { |
|
419
|
|
|
$c = $this->context->classAction[$prim->classes[$j]][$i]; |
|
420
|
|
|
if ($c > 0 && ++$this->context->frequency[$c] > $max) { |
|
421
|
|
|
$maxAction = $c; |
|
422
|
|
|
$max = $this->context->frequency[$c]; |
|
423
|
|
|
} elseif (self::VACANT === $c) { |
|
424
|
|
|
$countVacant++; |
|
425
|
|
|
} |
|
426
|
|
|
} |
|
427
|
|
|
} |
|
428
|
|
|
|
|
429
|
|
|
$n = $max - 1 - $countVacant; |
|
430
|
|
|
|
|
431
|
|
|
if ($n > 0) { |
|
432
|
|
|
$aux->table[$i] = $maxAction; |
|
433
|
|
|
$gain += $n; |
|
434
|
|
|
} else { |
|
435
|
|
|
$aux->table[$i] = self::VACANT; |
|
436
|
|
|
} |
|
437
|
|
|
} |
|
438
|
|
|
$aux->gain = $gain; |
|
|
|
|
|
|
439
|
|
|
} |
|
440
|
|
|
|
|
441
|
|
|
private function authodoxTable() |
|
442
|
|
|
{ |
|
443
|
|
|
// TODO |
|
444
|
|
|
$this->context->cTermIndex = \array_fill(0, $this->context->countTerminals, -1); |
|
445
|
|
|
$this->context->oTermIndex = \array_fill(0, $this->context->countTerminals, 0); |
|
446
|
|
|
|
|
447
|
|
|
$countCTerms = 0; |
|
448
|
|
|
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
449
|
|
|
if ($j === $this->context->errorToken->code) { |
|
450
|
|
|
$this->context->cTermIndex[$j] = $countCTerms; |
|
451
|
|
|
$this->context->oTermIndex[$countCTerms++] = $j; |
|
452
|
|
|
continue; |
|
453
|
|
|
} |
|
454
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
455
|
|
|
if ($this->context->termAction[$i][$j] !== self::VACANT) { |
|
456
|
|
|
$this->context->cTermIndex[$j] = $countCTerms; |
|
457
|
|
|
$this->context->oTermIndex[$countCTerms++] = $j; |
|
458
|
|
|
break; |
|
459
|
|
|
} |
|
460
|
|
|
} |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
$cTermAction = \array_fill( |
|
464
|
|
|
0, $this->context->countAux, \array_fill(0, $countCTerms, 0) |
|
465
|
|
|
); |
|
466
|
|
|
|
|
467
|
|
View Code Duplication |
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
|
|
|
|
|
468
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
|
469
|
|
|
$cTermAction[$i][$j] = $this->context->classAction[$i][$this->context->oTermIndex[$j]]; |
|
470
|
|
|
} |
|
471
|
|
|
} |
|
472
|
|
|
|
|
473
|
|
|
//582 |
|
474
|
|
|
|
|
475
|
|
|
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
476
|
|
|
if ($this->context->class2nd[$i] >= 0 && $this->context->class2nd[$i] != $i) { |
|
477
|
|
|
$table = $this->context->classAction[$this->context->class2nd[$i]]; |
|
478
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
|
479
|
|
|
if (self::VACANT !== $table[$this->context->oTermIndex[$j]]) { |
|
480
|
|
|
if ($cTermAction[$i][$j] === $table[$this->context->oTermIndex[$j]]) { |
|
481
|
|
|
$cTermAction[$i][$j] = self::VACANT; |
|
482
|
|
|
} elseif ($cTermAction[$i][$j] === self::VACANT) { |
|
483
|
|
|
$cTermAction[$i][$j] = self::DEFAULT; |
|
484
|
|
|
} |
|
485
|
|
|
} |
|
486
|
|
|
} |
|
487
|
|
|
} |
|
488
|
|
|
} |
|
489
|
|
|
|
|
490
|
|
View Code Duplication |
for ($i = $this->context->countClasses; $i < $this->context->countAux; $i++) { |
|
|
|
|
|
|
491
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
|
492
|
|
|
$cTermAction[$i][$j] = $this->context->classAction[$i][$this->context->oTermIndex[$j]]; |
|
493
|
|
|
} |
|
494
|
|
|
} |
|
495
|
|
|
$base = []; |
|
496
|
|
|
$this->packTable( |
|
497
|
|
|
$cTermAction, $this->context->countAux, $countCTerms, false, false, |
|
498
|
|
|
$this->result->yyaction, $this->result->yycheck, $base |
|
499
|
|
|
); |
|
500
|
|
|
$this->result->yydefault = $this->context->defaultAct; |
|
501
|
|
|
|
|
502
|
|
|
$this->result->yybase = \array_fill(0, $this->context->countNonLeafStates * 2, 0); |
|
503
|
|
|
$this->result->yybasesize = $this->context->countNonLeafStates; |
|
504
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
505
|
|
|
$cl = $this->context->classOf[$i]; |
|
506
|
|
|
$this->result->yybase[$i] = $base[$cl]; |
|
507
|
|
|
if ($this->context->class2nd[$cl] >= 0 && $this->context->class2nd[$cl] != $cl) { |
|
508
|
|
|
$this->result->yybase[$i + $this->context->countNonLeafStates] = $base[$this->context->class2nd[$cl]]; |
|
509
|
|
|
if ($i + $this->context->countNonLeafStates + 1 > $this->result->yybasesize) { |
|
510
|
|
|
$this->result->yybasesize = $i + $this->context->countNonLeafStates + 1; |
|
511
|
|
|
} |
|
512
|
|
|
} |
|
513
|
|
|
} |
|
514
|
|
|
|
|
515
|
|
|
$this->result->yybase = \array_slice($this->result->yybase, 0, $this->result->yybasesize); |
|
516
|
|
|
|
|
517
|
|
|
//642 |
|
518
|
|
|
$nonTermTransposed = \array_fill(0, $this->context->countNonTerminals, array_fill(0, $this->context->countNonLeafStates, 0)); |
|
519
|
|
|
foreach ($nonTermTransposed as $j => $_dump) { |
|
520
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
|
521
|
|
|
$nonTermTransposed[$j][$i] = $this->context->nonTermGoto[$i][$j]; |
|
522
|
|
|
if ($this->context->nonTermGoto[$i][$j] === $this->context->defaultGoto[$j]) { |
|
523
|
|
|
$nonTermTransposed[$j][$i] = self::VACANT; |
|
524
|
|
|
} |
|
525
|
|
|
} |
|
526
|
|
|
} |
|
527
|
|
|
|
|
528
|
|
|
$this->packTable( |
|
529
|
|
|
$nonTermTransposed, $this->context->countNonTerminals, $this->context->countNonLeafStates, |
|
530
|
|
|
false, true, $this->result->yygoto, $this->result->yygcheck, $this->result->yygbase |
|
531
|
|
|
); |
|
532
|
|
|
|
|
533
|
|
|
$this->result->yygdefault = $this->context->defaultGoto; |
|
534
|
|
|
|
|
535
|
|
|
$this->result->yylhs = []; |
|
536
|
|
|
$this->result->yylen = []; |
|
537
|
|
|
foreach ($this->context->grams as $gram) { |
|
538
|
|
|
$this->result->yylhs[] = $this->nb($gram->body[0]); |
|
539
|
|
|
$this->result->yylen[] = \count($gram->body) - 1; |
|
540
|
|
|
} |
|
541
|
|
|
|
|
542
|
|
|
$this->result->yytranslatesize = 0; |
|
543
|
|
|
|
|
544
|
|
|
foreach ($this->context->terminals as $term) { |
|
545
|
|
|
$value = $term->value; |
|
546
|
|
|
if ($value + 1 > $this->result->yytranslatesize) { |
|
547
|
|
|
$this->result->yytranslatesize = $value + 1; |
|
548
|
|
|
} |
|
549
|
|
|
} |
|
550
|
|
|
|
|
551
|
|
|
$this->result->yytranslate = \array_fill(0, $this->result->yytranslatesize, $countCTerms); |
|
552
|
|
|
$this->result->yyncterms = $countCTerms; |
|
553
|
|
|
|
|
554
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
|
555
|
|
|
if ($this->context->cTermIndex[$i] >= 0) { |
|
556
|
|
|
$symbol = $this->context->symbol($i); |
|
557
|
|
|
$this->result->yytranslate[$symbol->value] = $this->context->cTermIndex[$i]; |
|
558
|
|
|
} |
|
559
|
|
|
} |
|
560
|
|
|
|
|
561
|
|
|
$this->result->yyaction = $this->encodeShiftReduce($this->result->yyaction, \count($this->result->yyaction)); |
|
562
|
|
|
$this->result->yygoto = $this->encodeShiftReduce($this->result->yygoto, \count($this->result->yygoto)); |
|
563
|
|
|
$this->result->yygdefault = $this->encodeShiftReduce($this->result->yygdefault, $this->context->countNonTerminals); |
|
564
|
|
|
} |
|
565
|
|
|
|
|
566
|
|
|
/** |
|
567
|
|
|
* @param array $transit |
|
568
|
|
|
* @param int $nrows |
|
569
|
|
|
* @param int $ncols |
|
570
|
|
|
* @param bool $dontcare |
|
571
|
|
|
* @param bool $checkrow |
|
572
|
|
|
* @param array $outtable |
|
573
|
|
|
* @param array $outcheck |
|
574
|
|
|
* @param array $outbase |
|
575
|
|
|
*/ |
|
576
|
|
|
private function packTable(array $transit, int $nrows, int $ncols, bool $dontcare, bool $checkrow, array &$outtable, array &$outcheck, array &$outbase) |
|
577
|
|
|
{ |
|
578
|
|
|
$trow = []; |
|
579
|
|
|
for ($i = 0; $i < $nrows; $i++) { |
|
580
|
|
|
$trow[] = $p = new TRow($i); |
|
581
|
|
|
for ($j = 0; $j < $ncols; $j++) { |
|
582
|
|
|
if (self::VACANT !== $transit[$i][$j]) { |
|
583
|
|
|
if ($p->mini < 0) { |
|
584
|
|
|
$p->mini = $j; |
|
585
|
|
|
} |
|
586
|
|
|
$p->maxi = $j + 1; |
|
587
|
|
|
$p->nent++; |
|
588
|
|
|
} |
|
589
|
|
|
} |
|
590
|
|
|
if ($p->mini < 0) { |
|
591
|
|
|
$p->mini = 0; |
|
592
|
|
|
} |
|
593
|
|
|
} |
|
594
|
|
|
|
|
595
|
|
|
Utils::stableSort($trow, [TRow::class, 'compare']); |
|
596
|
|
|
|
|
597
|
|
|
if ($this->context->debug) { |
|
598
|
|
|
$this->context->debug("Order:\n"); |
|
599
|
|
|
for ($i = 0; $i < $nrows; $i++) { |
|
600
|
|
|
$this->context->debug(sprintf('%d,', $trow[$i]->index)); |
|
601
|
|
|
} |
|
602
|
|
|
$this->context->debug("\n"); |
|
603
|
|
|
} |
|
604
|
|
|
|
|
605
|
|
|
$poolsize = $nrows * $ncols; |
|
606
|
|
|
$actpool = \array_fill(0, $poolsize, 0); |
|
607
|
|
|
$check = \array_fill(0, $poolsize, -1); |
|
608
|
|
|
$base = \array_fill(0, $nrows, 0); |
|
609
|
|
|
$handledBases = []; |
|
610
|
|
|
$actpoolmax = 0; |
|
611
|
|
|
|
|
612
|
|
|
for ($ii = 0; $ii < $nrows; $ii++) { |
|
613
|
|
|
$i = $trow[$ii]->index; |
|
614
|
|
|
if (Utils::vacantRow($transit[$i], $ncols)) { |
|
615
|
|
|
$base[$i] = 0; |
|
616
|
|
|
goto ok; |
|
617
|
|
|
} |
|
618
|
|
|
for ($h = 0; $h < $ii; $h++) { |
|
619
|
|
|
if (Utils::eqRow($transit[$trow[$h]->index], $transit[$i], $ncols)) { |
|
620
|
|
|
$base[$i] = $base[$trow[$h]->index]; |
|
621
|
|
|
goto ok; |
|
622
|
|
|
} |
|
623
|
|
|
} |
|
624
|
|
|
for ($j = 0; $j < $poolsize; $j++) { |
|
625
|
|
|
$jj = $j; |
|
626
|
|
|
$base[$i] = $j - $trow[$ii]->mini; |
|
627
|
|
|
if (!$dontcare) { |
|
628
|
|
|
if ($base[$i] === 0) { |
|
629
|
|
|
continue; |
|
630
|
|
|
} |
|
631
|
|
|
if (isset($handledBases[$base[$i]])) { |
|
632
|
|
|
continue; |
|
633
|
|
|
} |
|
634
|
|
|
} |
|
635
|
|
|
|
|
636
|
|
|
for ($k = $trow[$ii]->mini; $k < $trow[$ii]->maxi; $k++) { |
|
637
|
|
|
if (self::VACANT !== $transit[$i][$k]) { |
|
638
|
|
|
if ($jj >= $poolsize) { |
|
639
|
|
|
die("Can't happen"); |
|
640
|
|
|
} |
|
641
|
|
|
if ($check[$jj] >= 0 && !($dontcare && $actpool[$jj] === $transit[$i][$k])) { |
|
642
|
|
|
goto next; |
|
643
|
|
|
} |
|
644
|
|
|
} |
|
645
|
|
|
$jj++; |
|
646
|
|
|
} |
|
647
|
|
|
break; |
|
648
|
|
|
next:; |
|
649
|
|
|
} |
|
650
|
|
|
|
|
651
|
|
|
$handledBases[$base[$i]] = true; |
|
652
|
|
|
$jj = $j; |
|
653
|
|
|
for ($k = $trow[$ii]->mini; $k < $trow[$ii]->maxi; $k++) { |
|
654
|
|
|
if (self::VACANT !== $transit[$i][$k]) { |
|
655
|
|
|
$actpool[$jj] = $transit[$i][$k]; |
|
656
|
|
|
$check[$jj] = $checkrow ? $i : $k; |
|
657
|
|
|
} |
|
658
|
|
|
$jj++; |
|
659
|
|
|
} |
|
660
|
|
|
if ($jj >= $actpoolmax) { |
|
661
|
|
|
$actpoolmax = $jj; |
|
662
|
|
|
} |
|
663
|
|
|
ok:; |
|
664
|
|
|
} |
|
665
|
|
|
|
|
666
|
|
|
$outtable = \array_slice($actpool, 0, $actpoolmax); |
|
667
|
|
|
$outcheck = \array_slice($check, 0, $actpoolmax); |
|
668
|
|
|
$outbase = $base; |
|
669
|
|
|
} |
|
670
|
|
|
|
|
671
|
|
|
/** |
|
672
|
|
|
* @param int $code |
|
673
|
|
|
* |
|
674
|
|
|
* @return int |
|
675
|
|
|
*/ |
|
676
|
|
|
public function encodeRederr(int $code): int |
|
677
|
|
|
{ |
|
678
|
|
|
return $code < 0 ? self::UNEXPECTED : $code; |
|
679
|
|
|
} |
|
680
|
|
|
|
|
681
|
|
|
/** |
|
682
|
|
|
* @return void |
|
683
|
|
|
*/ |
|
684
|
|
|
public function resetFrequency() |
|
685
|
|
|
{ |
|
686
|
|
|
$this->context->frequency = \array_fill(0, $this->context->countStates, 0); |
|
687
|
|
|
} |
|
688
|
|
|
|
|
689
|
|
|
/** |
|
690
|
|
|
* @param int $x |
|
691
|
|
|
* @param int $y |
|
692
|
|
|
* |
|
693
|
|
|
* @return int |
|
694
|
|
|
*/ |
|
695
|
|
|
public function cmpStates(int $x, int $y): int |
|
696
|
|
|
{ |
|
697
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
|
698
|
|
|
if ($this->context->termAction[$x][$i] != $this->context->termAction[$y][$i]) { |
|
699
|
|
|
return $this->context->termAction[$x][$i] - $this->context->termAction[$y][$i]; |
|
700
|
|
|
} |
|
701
|
|
|
} |
|
702
|
|
|
|
|
703
|
|
|
return 0; |
|
704
|
|
|
} |
|
705
|
|
|
|
|
706
|
|
|
/** |
|
707
|
|
|
* @param Symbol $symbol |
|
708
|
|
|
* |
|
709
|
|
|
* @return int |
|
710
|
|
|
*/ |
|
711
|
|
|
private function nb(Symbol $symbol) |
|
712
|
|
|
{ |
|
713
|
|
|
if ($symbol->isTerminal) { |
|
714
|
|
|
return $symbol->code; |
|
715
|
|
|
} else { |
|
716
|
|
|
return $symbol->code - $this->context->countTerminals; |
|
717
|
|
|
} |
|
718
|
|
|
} |
|
719
|
|
|
} |
|
720
|
|
|
|
stenin-nikita /
PHP-Yacc
Loading history...
