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<?php |
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/** |
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* This file is part of PHP-Yacc package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace PhpYacc\Compress; |
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use PhpYacc\Grammar\Context; |
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use PhpYacc\Grammar\Symbol; |
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use PhpYacc\Support\Utils; |
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/** |
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* Class Compress. |
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*/ |
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class Compress |
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{ |
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const UNEXPECTED = 32767; |
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const DEFAULT = -32766; |
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const VACANT = -32768; |
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/** |
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* @var Context |
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*/ |
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private $context; |
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/** |
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* @var CompressResult |
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*/ |
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private $result; |
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/** |
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* @param Context $context |
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* |
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* @return CompressResult |
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*/ |
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public function compress(Context $context) |
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{ |
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$this->result = new CompressResult(); |
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$this->context = $context; |
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$this->makeupTable2(); |
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return $this->result; |
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} |
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/** |
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* @return void |
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*/ |
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private function computePreImages() |
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{ |
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/** @var PreImage[] $preImages */ |
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$preImages = []; |
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for ($i = 0; $i < $this->context->countStates; $i++) { |
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$preImages[$i] = new PreImage($i); |
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} |
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for ($i = 0; $i < $this->context->countClasses; $i++) { |
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for ($j = 0; $j < $this->context->countTerminals; $j++) { |
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$s = $this->context->classAction[$i][$j]; |
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if ($s > 0) { |
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$preImages[$s]->classes[$preImages[$s]->length++] = $i; |
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} |
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} |
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} |
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Utils::stableSort($preImages, PreImage::class.'::compare'); |
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$this->context->primof = \array_fill(0, $this->context->countStates, 0); |
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$this->context->prims = \array_fill(0, $this->context->countStates, 0); |
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$this->context->countPrims = 0; |
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for ($i = 0; $i < $this->context->countStates;) { |
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$p = $preImages[$i]; |
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$this->context->prims[$this->context->countPrims] = $p; |
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for (; $i < $this->context->countStates && PreImage::compare($p, $preImages[$i]) === 0; $i++) { |
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$this->context->primof[$preImages[$i]->index] = $p; |
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} |
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$p->index = $this->context->countPrims++; |
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} |
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} |
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/** |
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* @param array $t |
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* @param int $count |
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* |
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* @return array |
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*/ |
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private function encodeShiftReduce(array $t, int $count): array |
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{ |
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for ($i = 0; $i < $count; $i++) { |
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if ($t[$i] >= $this->context->countNonLeafStates) { |
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$t[$i] = $this->context->countNonLeafStates + $this->context->defaultAct[$t[$i]]; |
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} |
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} |
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return $t; |
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} |
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/** |
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* @return void |
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*/ |
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private function makeupTable2() |
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{ |
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$this->context->termAction = \array_fill(0, $this->context->countNonLeafStates, 0); |
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$this->context->classAction = \array_fill(0, $this->context->countNonLeafStates * 2, 0); |
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$this->context->nonTermGoto = \array_fill(0, $this->context->countNonLeafStates, 0); |
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$this->context->defaultAct = \array_fill(0, $this->context->countStates, 0); |
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$this->context->defaultGoto = \array_fill(0, $this->context->countNonTerminals, 0); |
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$this->resetFrequency(); |
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$this->context->stateImageSorted = \array_fill(0, $this->context->countNonLeafStates, 0); |
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$this->context->classOf = \array_fill(0, $this->context->countStates, 0); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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$this->context->termAction[$i] = \array_fill(0, $this->context->countTerminals, self::VACANT); |
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$this->context->nonTermGoto[$i] = \array_fill(0, $this->context->countNonTerminals, self::VACANT); |
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foreach ($this->context->states[$i]->shifts as $shift) { |
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if ($shift->through->isTerminal) { |
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$this->context->termAction[$i][$shift->through->code] = $shift->number; |
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} else { |
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$this->context->nonTermGoto[$i][$this->nb($shift->through)] = $shift->number; |
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} |
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} |
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foreach ($this->context->states[$i]->reduce as $reduce) { |
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if ($reduce->symbol->isNilSymbol()) { |
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break; |
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} |
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$this->context->termAction[$i][$reduce->symbol->code] = -$this->encodeRederr($reduce->number); |
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} |
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$this->context->stateImageSorted[$i] = $i; |
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} |
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foreach ($this->context->states as $key => $state) { |
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$r = null; |
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foreach ($state->reduce as $r) { |
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if ($r->symbol->isNilSymbol()) { |
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break; |
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} |
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} |
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$this->context->defaultAct[$key] = $this->encodeRederr($r->number); |
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} |
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for ($j = 0; $j < $this->context->countNonTerminals; $j++) { |
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$max = 0; |
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$maxst = self::VACANT; |
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$this->resetFrequency(); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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$st = $this->context->nonTermGoto[$i][$j]; |
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if ($st > 0) { |
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$this->context->frequency[$st]++; |
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if ($this->context->frequency[$st] > $max) { |
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$max = $this->context->frequency[$st]; |
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$maxst = $st; |
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} |
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} |
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} |
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$this->context->defaultGoto[$j] = $maxst; |
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} |
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// 847 |
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Utils::stableSort($this->context->stateImageSorted, [$this, 'cmpStates']); |
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$j = 0; |
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for ($i = 0; $i < $this->context->countNonLeafStates;) { |
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$k = $this->context->stateImageSorted[$i]; |
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$this->context->classAction[$j] = $this->context->termAction[$k]; |
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for (; $i < $this->context->countNonLeafStates && $this->cmpStates($this->context->stateImageSorted[$i], $k) === 0; $i++) { |
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$this->context->classOf[$this->context->stateImageSorted[$i]] = $j; |
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} |
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$j++; |
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} |
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$this->context->countClasses = $j; |
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if ($this->context->debug) { |
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$this->context->debug("State=>class:\n"); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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if ($i % 10 === 0) { |
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$this->context->debug("\n"); |
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} |
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$this->context->debug(\sprintf('%3d=>%-3d ', $i, $this->context->classOf[$i])); |
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} |
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$this->context->debug("\n"); |
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} |
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$this->computePreImages(); |
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if ($this->context->debug) { |
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$this->printTable(); |
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} |
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$this->extractCommon(); |
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$this->authodoxTable(); |
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} |
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/** |
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* @return void |
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*/ |
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private function printTable() |
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{ |
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$this->context->debug("\nTerminal action:\n"); |
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$this->context->debug(\sprintf('%8.8s', 'T\\S')); |
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for ($i = 0; $i < $this->context->countClasses; $i++) { |
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$this->context->debug(\sprintf('%4d', $i)); |
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} |
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$this->context->debug("\n"); |
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for ($j = 0; $j < $this->context->countTerminals; $j++) { |
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$symbol = $this->context->symbol($j); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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if ($this->context->termAction[$i][$j] !== self::VACANT) { |
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break; |
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} |
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} |
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View Code Duplication |
if ($i < $this->context->countNonLeafStates) { |
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$this->context->debug(\sprintf('%8.8s', $symbol->name)); |
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for ($i = 0; $i < $this->context->countClasses; $i++) { |
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$this->context->debug(Utils::printAction($this->context->classAction[$i][$j])); |
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} |
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$this->context->debug("\n"); |
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} |
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} |
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$this->context->debug("\nNonterminal GOTO table:\n"); |
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$this->context->debug(\sprintf('%8.8s', 'T\\S')); |
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View Code Duplication |
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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$this->context->debug(\sprintf('%4d', $i)); |
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} |
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$this->context->debug("\n"); |
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foreach ($this->context->nonterminals as $symbol) { |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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if ($this->context->nonTermGoto[$i][$this->nb($symbol)] > 0) { |
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break; |
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} |
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} |
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View Code Duplication |
if ($i < $this->context->countNonLeafStates) { |
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$this->context->debug(\sprintf('%8.8s', $symbol->name)); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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$this->context->debug(Utils::printAction($this->context->nonTermGoto[$i][$this->nb($symbol)])); |
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} |
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$this->context->debug("\n"); |
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} |
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} |
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$this->context->debug("\nNonterminal GOTO table:\n"); |
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$this->context->debug(\sprintf('%8.8s default', 'T\\S')); |
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View Code Duplication |
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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$this->context->debug(\sprintf('%4d', $i)); |
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} |
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$this->context->debug("\n"); |
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foreach ($this->context->nonterminals as $symbol) { |
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$nb = $this->nb($symbol); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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if ($this->context->nonTermGoto[$i][$nb] > 0) { |
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break; |
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} |
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} |
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if ($i < $this->context->countNonLeafStates) { |
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$this->context->debug(\sprintf('%8.8s', $symbol->name)); |
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$this->context->debug(\sprintf('%8d', $this->context->defaultGoto[$nb])); |
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for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
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if ($this->context->nonTermGoto[$i][$nb] === $this->context->defaultGoto[$nb]) { |
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$this->context->debug(' = '); |
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} else { |
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$this->context->debug(Utils::printAction($this->context->nonTermGoto[$i][$nb])); |
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} |
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} |
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$this->context->debug("\n"); |
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} |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function extractCommon() |
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{ |
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$this->context->class2nd = \array_fill(0, $this->context->countClasses, -1); |
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$auxList = null; |
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$n = 0; |
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for ($i = 0; $i < $this->context->countPrims; $i++) { |
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$preImage = $this->context->prims[$i]; |
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if ($preImage->length < 2) { |
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continue; |
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} |
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$p = new Auxiliary(); |
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$this->bestCovering($p, $preImage); |
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if ($p->gain < 1) { |
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continue; |
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} |
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$p->preImage = $preImage; |
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$p->next = $auxList; |
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$auxList = $p; |
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$n++; |
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} |
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if ($this->context->debug) { |
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$this->context->debug("\nNumber of prims: {$this->context->countPrims}\n"); |
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$this->context->debug("\nCandidates of aux table:\n"); |
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for ($p = $auxList; $p !== null; $p = $p->next) { |
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$this->context->debug(\sprintf('Aux = (%d) ', $p->gain)); |
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$f = 0; |
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View Code Duplication |
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
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if (self::VACANT !== $p->table[$j]) { |
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$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $p->table[$j])); |
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} |
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} |
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$this->context->debug(' * '); |
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for ($j = 0; $j < $p->preImage->length; $j++) { |
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$this->context->debug(\sprintf($j ? ',%d' : '%d', $p->preImage->classes[$j])); |
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} |
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$this->context->debug("\n"); |
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} |
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$this->context->debug("Used aux table:\n"); |
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} |
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$this->context->countAux = $this->context->countClasses; |
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for (; ;) { |
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$maxGain = 0; |
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$maxAux = null; |
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$pre = null; |
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$maxPreImage = null; |
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|
|
for ($p = $auxList; $p != null; $p = $p->next) { |
341
|
|
|
if ($p->gain > $maxGain) { |
342
|
|
|
$maxGain = $p->gain; |
343
|
|
|
$maxAux = $p; |
344
|
|
|
$maxPreImage = $pre; |
345
|
|
|
} |
346
|
|
|
/** @var Auxiliary $pre */ |
347
|
|
|
$pre = $p; |
348
|
|
|
} |
349
|
|
|
|
350
|
|
|
if ($maxAux === null) { |
351
|
|
|
break; |
352
|
|
|
} |
353
|
|
|
|
354
|
|
|
if ($maxPreImage) { |
355
|
|
|
$maxPreImage->next = $maxAux->next; |
356
|
|
|
} else { |
357
|
|
|
$auxList = $maxAux->next; |
358
|
|
|
} |
359
|
|
|
|
360
|
|
|
$maxAux->index = $this->context->countAux; |
361
|
|
|
|
362
|
|
View Code Duplication |
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
|
|
|
|
363
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
364
|
|
|
if (Utils::eqRow($this->context->classAction[$cl], $maxAux->table, $this->context->countTerminals)) { |
365
|
|
|
$maxAux->index = $cl; |
366
|
|
|
} |
367
|
|
|
} |
368
|
|
|
|
369
|
|
|
if ($maxAux->index >= $this->context->countAux) { |
370
|
|
|
$this->context->classAction[$this->context->countAux++] = $maxAux->table; |
371
|
|
|
} |
372
|
|
|
|
373
|
|
View Code Duplication |
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
|
|
|
|
374
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
375
|
|
|
if ($this->context->class2nd[$cl] < 0) { |
376
|
|
|
$this->context->class2nd[$cl] = $maxAux->index; |
377
|
|
|
} |
378
|
|
|
} |
379
|
|
|
|
380
|
|
|
if ($this->context->debug) { |
381
|
|
|
$this->context->debug(\sprintf('Selected aux[%d]: (%d) ', $maxAux->index, $maxAux->gain)); |
382
|
|
|
$f = 0; |
383
|
|
View Code Duplication |
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
|
|
|
|
384
|
|
|
if (self::VACANT !== $maxAux->table[$j]) { |
385
|
|
|
$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $maxAux->table[$j])); |
386
|
|
|
} |
387
|
|
|
} |
388
|
|
|
$this->context->debug(' * '); |
389
|
|
|
$f = 0; |
390
|
|
|
for ($j = 0; $j < $maxAux->preImage->length; $j++) { |
391
|
|
|
$cl = $maxAux->preImage->classes[$j]; |
392
|
|
|
if ($this->context->class2nd[$cl] === $maxAux->index) { |
393
|
|
|
$this->context->debug(\sprintf($f++ ? ',%d' : '%d', $cl)); |
394
|
|
|
} |
395
|
|
|
} |
396
|
|
|
$this->context->debug("\n"); |
397
|
|
|
} |
398
|
|
|
|
399
|
|
|
for ($p = $auxList; $p != null; $p = $p->next) { |
400
|
|
|
$this->bestCovering($p, $p->preImage); |
401
|
|
|
} |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
if ($this->context->debug) { |
405
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
406
|
|
|
if ($this->context->class2nd[$this->context->classOf[$i]] >= 0 && $this->context->class2nd[$this->context->classOf[$i]] !== $this->context->classOf[$i]) { |
407
|
|
|
$this->context->debug(\sprintf("state %d (class %d): aux[%d]\n", $i, $this->context->classOf[$i], $this->context->class2nd[$this->context->classOf[$i]])); |
408
|
|
|
} else { |
409
|
|
|
$this->context->debug(\sprintf("state %d (class %d)\n", $i, $this->context->classOf[$i])); |
410
|
|
|
} |
411
|
|
|
} |
412
|
|
|
} |
413
|
|
|
} |
414
|
|
|
|
415
|
|
|
/** |
416
|
|
|
* @param Auxiliary $aux |
417
|
|
|
* @param PreImage $prim |
418
|
|
|
*/ |
419
|
|
|
private function bestCovering(Auxiliary $aux, PreImage $prim) |
420
|
|
|
{ |
421
|
|
|
$this->resetFrequency(); |
422
|
|
|
$gain = 0; |
423
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
424
|
|
|
$max = 0; |
425
|
|
|
$maxAction = -1; |
426
|
|
|
$countVacant = 0; |
427
|
|
|
|
428
|
|
|
for ($j = 0; $j < $prim->length; $j++) { |
429
|
|
|
if ($this->context->class2nd[$prim->classes[$j]] < 0) { |
430
|
|
|
$c = $this->context->classAction[$prim->classes[$j]][$i]; |
431
|
|
|
if ($c > 0 && ++$this->context->frequency[$c] > $max) { |
432
|
|
|
$maxAction = $c; |
433
|
|
|
$max = $this->context->frequency[$c]; |
434
|
|
|
} elseif (self::VACANT === $c) { |
435
|
|
|
$countVacant++; |
436
|
|
|
} |
437
|
|
|
} |
438
|
|
|
} |
439
|
|
|
|
440
|
|
|
$n = $max - 1 - $countVacant; |
441
|
|
|
|
442
|
|
|
if ($n > 0) { |
443
|
|
|
$aux->table[$i] = $maxAction; |
444
|
|
|
$gain += $n; |
445
|
|
|
} else { |
446
|
|
|
$aux->table[$i] = self::VACANT; |
447
|
|
|
} |
448
|
|
|
} |
449
|
|
|
$aux->gain = $gain; |
|
|
|
|
450
|
|
|
} |
451
|
|
|
|
452
|
|
|
/** |
453
|
|
|
* @return void |
454
|
|
|
*/ |
455
|
|
|
private function authodoxTable() |
456
|
|
|
{ |
457
|
|
|
// TODO |
458
|
|
|
$this->context->cTermIndex = \array_fill(0, $this->context->countTerminals, -1); |
459
|
|
|
$this->context->oTermIndex = \array_fill(0, $this->context->countTerminals, 0); |
460
|
|
|
|
461
|
|
|
$countCTerms = 0; |
462
|
|
|
for ($j = 0; $j < $this->context->countTerminals; $j++) { |
463
|
|
|
if ($j === $this->context->errorToken->code) { |
464
|
|
|
$this->context->cTermIndex[$j] = $countCTerms; |
465
|
|
|
$this->context->oTermIndex[$countCTerms++] = $j; |
466
|
|
|
continue; |
467
|
|
|
} |
468
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
469
|
|
|
if ($this->context->termAction[$i][$j] !== self::VACANT) { |
470
|
|
|
$this->context->cTermIndex[$j] = $countCTerms; |
471
|
|
|
$this->context->oTermIndex[$countCTerms++] = $j; |
472
|
|
|
break; |
473
|
|
|
} |
474
|
|
|
} |
475
|
|
|
} |
476
|
|
|
|
477
|
|
|
$cTermAction = \array_fill( |
478
|
|
|
0, $this->context->countAux, \array_fill(0, $countCTerms, 0) |
479
|
|
|
); |
480
|
|
|
|
481
|
|
View Code Duplication |
for ($i = 0; $i < $this->context->countClasses; $i++) { |
|
|
|
|
482
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
483
|
|
|
$cTermAction[$i][$j] = $this->context->classAction[$i][$this->context->oTermIndex[$j]]; |
484
|
|
|
} |
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
//582 |
488
|
|
|
|
489
|
|
|
for ($i = 0; $i < $this->context->countClasses; $i++) { |
490
|
|
|
if ($this->context->class2nd[$i] >= 0 && $this->context->class2nd[$i] != $i) { |
491
|
|
|
$table = $this->context->classAction[$this->context->class2nd[$i]]; |
492
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
493
|
|
|
if (self::VACANT !== $table[$this->context->oTermIndex[$j]]) { |
494
|
|
|
if ($cTermAction[$i][$j] === $table[$this->context->oTermIndex[$j]]) { |
495
|
|
|
$cTermAction[$i][$j] = self::VACANT; |
496
|
|
|
} elseif ($cTermAction[$i][$j] === self::VACANT) { |
497
|
|
|
$cTermAction[$i][$j] = self::DEFAULT; |
498
|
|
|
} |
499
|
|
|
} |
500
|
|
|
} |
501
|
|
|
} |
502
|
|
|
} |
503
|
|
|
|
504
|
|
View Code Duplication |
for ($i = $this->context->countClasses; $i < $this->context->countAux; $i++) { |
|
|
|
|
505
|
|
|
for ($j = 0; $j < $countCTerms; $j++) { |
506
|
|
|
$cTermAction[$i][$j] = $this->context->classAction[$i][$this->context->oTermIndex[$j]]; |
507
|
|
|
} |
508
|
|
|
} |
509
|
|
|
$base = []; |
510
|
|
|
$this->packTable( |
511
|
|
|
$cTermAction, $this->context->countAux, $countCTerms, false, false, |
512
|
|
|
$this->result->yyaction, $this->result->yycheck, $base |
513
|
|
|
); |
514
|
|
|
$this->result->yydefault = $this->context->defaultAct; |
515
|
|
|
|
516
|
|
|
$this->result->yybase = \array_fill(0, $this->context->countNonLeafStates * 2, 0); |
517
|
|
|
$this->result->yybasesize = $this->context->countNonLeafStates; |
518
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
519
|
|
|
$cl = $this->context->classOf[$i]; |
520
|
|
|
$this->result->yybase[$i] = $base[$cl]; |
521
|
|
|
if ($this->context->class2nd[$cl] >= 0 && $this->context->class2nd[$cl] != $cl) { |
522
|
|
|
$this->result->yybase[$i + $this->context->countNonLeafStates] = $base[$this->context->class2nd[$cl]]; |
523
|
|
|
if ($i + $this->context->countNonLeafStates + 1 > $this->result->yybasesize) { |
524
|
|
|
$this->result->yybasesize = $i + $this->context->countNonLeafStates + 1; |
525
|
|
|
} |
526
|
|
|
} |
527
|
|
|
} |
528
|
|
|
|
529
|
|
|
$this->result->yybase = \array_slice($this->result->yybase, 0, $this->result->yybasesize); |
530
|
|
|
|
531
|
|
|
//642 |
532
|
|
|
$nonTermTransposed = \array_fill(0, $this->context->countNonTerminals, array_fill(0, $this->context->countNonLeafStates, 0)); |
533
|
|
|
foreach ($nonTermTransposed as $j => $_dump) { |
534
|
|
|
for ($i = 0; $i < $this->context->countNonLeafStates; $i++) { |
535
|
|
|
$nonTermTransposed[$j][$i] = $this->context->nonTermGoto[$i][$j]; |
536
|
|
|
if ($this->context->nonTermGoto[$i][$j] === $this->context->defaultGoto[$j]) { |
537
|
|
|
$nonTermTransposed[$j][$i] = self::VACANT; |
538
|
|
|
} |
539
|
|
|
} |
540
|
|
|
} |
541
|
|
|
|
542
|
|
|
$this->packTable( |
543
|
|
|
$nonTermTransposed, $this->context->countNonTerminals, $this->context->countNonLeafStates, |
544
|
|
|
false, true, $this->result->yygoto, $this->result->yygcheck, $this->result->yygbase |
545
|
|
|
); |
546
|
|
|
|
547
|
|
|
$this->result->yygdefault = $this->context->defaultGoto; |
548
|
|
|
|
549
|
|
|
$this->result->yylhs = []; |
550
|
|
|
$this->result->yylen = []; |
551
|
|
|
foreach ($this->context->grams as $gram) { |
552
|
|
|
$this->result->yylhs[] = $this->nb($gram->body[0]); |
553
|
|
|
$this->result->yylen[] = \count($gram->body) - 1; |
554
|
|
|
} |
555
|
|
|
|
556
|
|
|
$this->result->yytranslatesize = 0; |
557
|
|
|
|
558
|
|
|
foreach ($this->context->terminals as $term) { |
559
|
|
|
$value = $term->value; |
560
|
|
|
if ($value + 1 > $this->result->yytranslatesize) { |
561
|
|
|
$this->result->yytranslatesize = $value + 1; |
562
|
|
|
} |
563
|
|
|
} |
564
|
|
|
|
565
|
|
|
$this->result->yytranslate = \array_fill(0, $this->result->yytranslatesize, $countCTerms); |
566
|
|
|
$this->result->yyncterms = $countCTerms; |
567
|
|
|
|
568
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
569
|
|
|
if ($this->context->cTermIndex[$i] >= 0) { |
570
|
|
|
$symbol = $this->context->symbol($i); |
571
|
|
|
$this->result->yytranslate[$symbol->value] = $this->context->cTermIndex[$i]; |
572
|
|
|
} |
573
|
|
|
} |
574
|
|
|
|
575
|
|
|
$this->result->yyaction = $this->encodeShiftReduce($this->result->yyaction, \count($this->result->yyaction)); |
576
|
|
|
$this->result->yygoto = $this->encodeShiftReduce($this->result->yygoto, \count($this->result->yygoto)); |
577
|
|
|
$this->result->yygdefault = $this->encodeShiftReduce($this->result->yygdefault, $this->context->countNonTerminals); |
578
|
|
|
} |
579
|
|
|
|
580
|
|
|
/** |
581
|
|
|
* @param array $transit |
582
|
|
|
* @param int $nrows |
583
|
|
|
* @param int $ncols |
584
|
|
|
* @param bool $dontcare |
585
|
|
|
* @param bool $checkrow |
586
|
|
|
* @param array $outtable |
587
|
|
|
* @param array $outcheck |
588
|
|
|
* @param array $outbase |
589
|
|
|
*/ |
590
|
|
|
private function packTable(array $transit, int $nrows, int $ncols, bool $dontcare, bool $checkrow, array &$outtable, array &$outcheck, array &$outbase) |
591
|
|
|
{ |
592
|
|
|
$trow = []; |
593
|
|
|
for ($i = 0; $i < $nrows; $i++) { |
594
|
|
|
$trow[] = $p = new TRow($i); |
595
|
|
|
for ($j = 0; $j < $ncols; $j++) { |
596
|
|
|
if (self::VACANT !== $transit[$i][$j]) { |
597
|
|
|
if ($p->mini < 0) { |
598
|
|
|
$p->mini = $j; |
599
|
|
|
} |
600
|
|
|
$p->maxi = $j + 1; |
601
|
|
|
$p->nent++; |
602
|
|
|
} |
603
|
|
|
} |
604
|
|
|
if ($p->mini < 0) { |
605
|
|
|
$p->mini = 0; |
606
|
|
|
} |
607
|
|
|
} |
608
|
|
|
|
609
|
|
|
Utils::stableSort($trow, [TRow::class, 'compare']); |
610
|
|
|
|
611
|
|
|
if ($this->context->debug) { |
612
|
|
|
$this->context->debug("Order:\n"); |
613
|
|
|
for ($i = 0; $i < $nrows; $i++) { |
614
|
|
|
$this->context->debug(sprintf('%d,', $trow[$i]->index)); |
615
|
|
|
} |
616
|
|
|
$this->context->debug("\n"); |
617
|
|
|
} |
618
|
|
|
|
619
|
|
|
$poolsize = $nrows * $ncols; |
620
|
|
|
$actpool = \array_fill(0, $poolsize, 0); |
621
|
|
|
$check = \array_fill(0, $poolsize, -1); |
622
|
|
|
$base = \array_fill(0, $nrows, 0); |
623
|
|
|
$handledBases = []; |
624
|
|
|
$actpoolmax = 0; |
625
|
|
|
|
626
|
|
|
for ($ii = 0; $ii < $nrows; $ii++) { |
627
|
|
|
$i = $trow[$ii]->index; |
628
|
|
|
if (Utils::vacantRow($transit[$i], $ncols)) { |
629
|
|
|
$base[$i] = 0; |
630
|
|
|
goto ok; |
631
|
|
|
} |
632
|
|
|
for ($h = 0; $h < $ii; $h++) { |
633
|
|
|
if (Utils::eqRow($transit[$trow[$h]->index], $transit[$i], $ncols)) { |
634
|
|
|
$base[$i] = $base[$trow[$h]->index]; |
635
|
|
|
goto ok; |
636
|
|
|
} |
637
|
|
|
} |
638
|
|
|
for ($j = 0; $j < $poolsize; $j++) { |
639
|
|
|
$jj = $j; |
640
|
|
|
$base[$i] = $j - $trow[$ii]->mini; |
641
|
|
|
if (!$dontcare) { |
642
|
|
|
if ($base[$i] === 0) { |
643
|
|
|
continue; |
644
|
|
|
} |
645
|
|
|
if (isset($handledBases[$base[$i]])) { |
646
|
|
|
continue; |
647
|
|
|
} |
648
|
|
|
} |
649
|
|
|
|
650
|
|
|
for ($k = $trow[$ii]->mini; $k < $trow[$ii]->maxi; $k++) { |
651
|
|
|
if (self::VACANT !== $transit[$i][$k]) { |
652
|
|
|
if ($jj >= $poolsize) { |
653
|
|
|
die("Can't happen"); |
654
|
|
|
} |
655
|
|
|
if ($check[$jj] >= 0 && !($dontcare && $actpool[$jj] === $transit[$i][$k])) { |
656
|
|
|
goto next; |
657
|
|
|
} |
658
|
|
|
} |
659
|
|
|
$jj++; |
660
|
|
|
} |
661
|
|
|
break; |
662
|
|
|
next:; |
663
|
|
|
} |
664
|
|
|
|
665
|
|
|
$handledBases[$base[$i]] = true; |
666
|
|
|
$jj = $j; |
667
|
|
|
for ($k = $trow[$ii]->mini; $k < $trow[$ii]->maxi; $k++) { |
668
|
|
|
if (self::VACANT !== $transit[$i][$k]) { |
669
|
|
|
$actpool[$jj] = $transit[$i][$k]; |
670
|
|
|
$check[$jj] = $checkrow ? $i : $k; |
671
|
|
|
} |
672
|
|
|
$jj++; |
673
|
|
|
} |
674
|
|
|
if ($jj >= $actpoolmax) { |
675
|
|
|
$actpoolmax = $jj; |
676
|
|
|
} |
677
|
|
|
ok:; |
678
|
|
|
} |
679
|
|
|
|
680
|
|
|
$outtable = \array_slice($actpool, 0, $actpoolmax); |
681
|
|
|
$outcheck = \array_slice($check, 0, $actpoolmax); |
682
|
|
|
$outbase = $base; |
683
|
|
|
} |
684
|
|
|
|
685
|
|
|
/** |
686
|
|
|
* @param int $code |
687
|
|
|
* |
688
|
|
|
* @return int |
689
|
|
|
*/ |
690
|
|
|
public function encodeRederr(int $code): int |
691
|
|
|
{ |
692
|
|
|
return $code < 0 ? self::UNEXPECTED : $code; |
693
|
|
|
} |
694
|
|
|
|
695
|
|
|
/** |
696
|
|
|
* @return void |
697
|
|
|
*/ |
698
|
|
|
public function resetFrequency() |
699
|
|
|
{ |
700
|
|
|
$this->context->frequency = \array_fill(0, $this->context->countStates, 0); |
701
|
|
|
} |
702
|
|
|
|
703
|
|
|
/** |
704
|
|
|
* @param int $x |
705
|
|
|
* @param int $y |
706
|
|
|
* |
707
|
|
|
* @return int |
708
|
|
|
*/ |
709
|
|
|
public function cmpStates(int $x, int $y): int |
710
|
|
|
{ |
711
|
|
|
for ($i = 0; $i < $this->context->countTerminals; $i++) { |
712
|
|
|
if ($this->context->termAction[$x][$i] != $this->context->termAction[$y][$i]) { |
713
|
|
|
return $this->context->termAction[$x][$i] - $this->context->termAction[$y][$i]; |
714
|
|
|
} |
715
|
|
|
} |
716
|
|
|
|
717
|
|
|
return 0; |
718
|
|
|
} |
719
|
|
|
|
720
|
|
|
/** |
721
|
|
|
* @param Symbol $symbol |
722
|
|
|
* |
723
|
|
|
* @return int |
724
|
|
|
*/ |
725
|
|
|
private function nb(Symbol $symbol) |
726
|
|
|
{ |
727
|
|
|
if ($symbol->isTerminal) { |
728
|
|
|
return $symbol->code; |
729
|
|
|
} else { |
730
|
|
|
return $symbol->code - $this->context->countTerminals; |
731
|
|
|
} |
732
|
|
|
} |
733
|
|
|
} |
734
|
|
|
|