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<?php |
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/** |
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* This file is part of the sweetrdf/InMemoryStoreSqlite package and licensed under |
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* the terms of the GPL-2 license. |
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* |
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* (c) Konrad Abicht <[email protected]> |
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* (c) Benjamin Nowack |
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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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namespace sweetrdf\InMemoryStoreSqlite\Parser; |
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use sweetrdf\InMemoryStoreSqlite\Log\Logger; |
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use sweetrdf\InMemoryStoreSqlite\NamespaceHelper; |
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use sweetrdf\InMemoryStoreSqlite\StringReader; |
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use function sweetrdf\InMemoryStoreSqlite\calcBase; |
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class SPARQLParser extends TurtleParser |
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{ |
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/** |
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* @var array<mixed> |
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*/ |
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public array $bnode_pattern_index; |
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public function __construct(Logger $logger, NamespaceHelper $namespaceHelper, StringReader $stringReader) |
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{ |
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parent::__construct($logger, $namespaceHelper, $stringReader); |
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$this->bnode_prefix = 'arc'.substr(md5(uniqid(rand())), 0, 4).'b'; |
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$this->bnode_id = 0; |
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$this->bnode_pattern_index = ['patterns' => [], 'bnodes' => []]; |
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} |
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public function parse(string $q, string $path = ''): void |
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{ |
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$this->base = $path ? calcBase($path) : NamespaceHelper::BASE_NAMESPACE; |
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$this->r = [ |
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'base' => '', |
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'vars' => [], |
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'prefixes' => [], |
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]; |
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$this->unparsed_code = $q; |
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list($r, $v) = $this->xQuery($q); |
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if ($r) { |
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$this->r['query'] = $r; |
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$this->unparsed_code = trim($v); |
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} elseif (!$this->logger->hasEntries('error') && !$this->unparsed_code) { |
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$this->logger->error('Query not properly closed'); |
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} |
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$this->r['prefixes'] = $this->namespaceHelper->getNamespaces(); |
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$this->r['base'] = $this->base; |
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/* remove trailing comments */ |
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while (preg_match('/^\s*(\#[^\xd\xa]*)(.*)$/si', $this->unparsed_code, $m)) { |
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$this->unparsed_code = $m[2]; |
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} |
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if ($this->unparsed_code && !$this->logger->hasEntries('error')) { |
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$rest = preg_replace('/[\x0a|\x0d]/i', ' ', substr($this->unparsed_code, 0, 30)); |
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$msg = trim($rest) ? 'Could not properly handle "'.$rest.'"' : 'Syntax error, probably an incomplete pattern'; |
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$this->logger->error($msg); |
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} |
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} |
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/* 1 */ |
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protected function xQuery($v) |
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{ |
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list($r, $v) = $this->xPrologue($v); |
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foreach (['Select', 'Construct', 'Describe', 'Ask'] as $type) { |
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$m = 'x'.$type.'Query'; |
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if ((list($r, $v) = $this->$m($v)) && $r) { |
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return [$r, $v]; |
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} |
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} |
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return [0, $v]; |
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} |
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/* 2 */ |
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protected function xPrologue($v) |
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{ |
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$r = 0; |
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if ((list($sub_r, $v) = $this->xBaseDecl($v)) && $sub_r) { |
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$this->base = $sub_r; |
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$r = 1; |
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} |
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while ((list($sub_r, $v) = $this->xPrefixDecl($v)) && $sub_r) { |
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$this->namespaceHelper->setPrefix($sub_r['prefix'], $sub_r['uri']); |
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$r = 1; |
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} |
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return [$r, $v]; |
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} |
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/* 5.. */ |
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protected function xSelectQuery($v) |
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{ |
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if ($sub_r = $this->x('SELECT\s+', $v)) { |
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$r = [ |
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'type' => 'select', |
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'result_vars' => [], |
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'dataset' => [], |
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]; |
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$all_vars = 0; |
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$sub_v = $sub_r[1]; |
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/* distinct, reduced */ |
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if ($sub_r = $this->x('(DISTINCT|REDUCED)\s+', $sub_v)) { |
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$r[strtolower($sub_r[1])] = 1; |
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$sub_v = $sub_r[2]; |
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} |
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/* result vars */ |
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if ($sub_r = $this->x('\*\s+', $sub_v)) { |
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$all_vars = 1; |
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$sub_v = $sub_r[1]; |
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} else { |
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while ((list($sub_r, $sub_v) = $this->xResultVar($sub_v)) && $sub_r) { |
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$r['result_vars'][] = $sub_r; |
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} |
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} |
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if (!$all_vars && !\count($r['result_vars'])) { |
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$this->logger->error('No result bindings specified.'); |
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} |
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/* dataset */ |
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while ((list($sub_r, $sub_v) = $this->xDatasetClause($sub_v)) && $sub_r) { |
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$r['dataset'][] = $sub_r; |
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} |
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/* where */ |
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if ((list($sub_r, $sub_v) = $this->xWhereClause($sub_v)) && $sub_r) { |
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$r['pattern'] = $sub_r; |
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} else { |
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return [0, $v]; |
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} |
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/* solution modifier */ |
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if ((list($sub_r, $sub_v) = $this->xSolutionModifier($sub_v)) && $sub_r) { |
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$r = array_merge($r, $sub_r); |
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} |
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/* all vars */ |
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if ($all_vars) { |
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foreach ($this->r['vars'] as $var) { |
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$r['result_vars'][] = ['var' => $var, 'aggregate' => 0, 'alias' => '']; |
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} |
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if (!$r['result_vars']) { |
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$r['result_vars'][] = '*'; |
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} |
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} |
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return [$r, $sub_v]; |
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} |
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return [0, $v]; |
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} |
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protected function xResultVar($v) |
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{ |
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return $this->xVar($v); |
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} |
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/* 6.. */ |
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protected function xConstructQuery($v) |
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{ |
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if ($sub_r = $this->x('CONSTRUCT\s*', $v)) { |
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$r = [ |
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'type' => 'construct', |
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'dataset' => [], |
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]; |
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$sub_v = $sub_r[1]; |
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/* construct template */ |
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if ((list($sub_r, $sub_v) = $this->xConstructTemplate($sub_v)) && \is_array($sub_r)) { |
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$r['construct_triples'] = $sub_r; |
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} else { |
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$this->logger->error('Construct Template not found'); |
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return [0, $v]; |
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} |
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/* dataset */ |
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while ((list($sub_r, $sub_v) = $this->xDatasetClause($sub_v)) && $sub_r) { |
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$r['dataset'][] = $sub_r; |
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} |
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/* where */ |
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if ((list($sub_r, $sub_v) = $this->xWhereClause($sub_v)) && $sub_r) { |
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$r['pattern'] = $sub_r; |
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} else { |
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return [0, $v]; |
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} |
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/* solution modifier */ |
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if ((list($sub_r, $sub_v) = $this->xSolutionModifier($sub_v)) && $sub_r) { |
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$r = array_merge($r, $sub_r); |
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} |
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return [$r, $sub_v]; |
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} |
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return [0, $v]; |
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} |
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/* 7.. */ |
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protected function xDescribeQuery($v) |
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{ |
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if ($sub_r = $this->x('DESCRIBE\s+', $v)) { |
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$r = [ |
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'type' => 'describe', |
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'result_vars' => [], |
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'result_uris' => [], |
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'dataset' => [], |
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]; |
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$sub_v = $sub_r[1]; |
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$all_vars = 0; |
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/* result vars/uris */ |
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if ($sub_r = $this->x('\*\s+', $sub_v)) { |
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$all_vars = 1; |
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$sub_v = $sub_r[1]; |
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} else { |
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do { |
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$proceed = 0; |
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if ((list($sub_r, $sub_v) = $this->xResultVar($sub_v)) && $sub_r) { |
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$r['result_vars'][] = $sub_r; |
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$proceed = 1; |
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} |
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if ((list($sub_r, $sub_v) = $this->xIRIref($sub_v)) && $sub_r) { |
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$r['result_uris'][] = $sub_r; |
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$proceed = 1; |
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} |
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} while ($proceed); |
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} |
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if (!$all_vars && !\count($r['result_vars']) && !\count($r['result_uris'])) { |
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$this->logger->error('No result bindings specified.'); |
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} |
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/* dataset */ |
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while ((list($sub_r, $sub_v) = $this->xDatasetClause($sub_v)) && $sub_r) { |
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$r['dataset'][] = $sub_r; |
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} |
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/* where */ |
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if ((list($sub_r, $sub_v) = $this->xWhereClause($sub_v)) && $sub_r) { |
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$r['pattern'] = $sub_r; |
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} |
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/* solution modifier */ |
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if ((list($sub_r, $sub_v) = $this->xSolutionModifier($sub_v)) && $sub_r) { |
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$r = array_merge($r, $sub_r); |
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} |
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/* all vars */ |
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if ($all_vars) { |
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foreach ($this->r['vars'] as $var) { |
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$r['result_vars'][] = ['var' => $var, 'aggregate' => 0, 'alias' => '']; |
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} |
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} |
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return [$r, $sub_v]; |
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} |
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return [0, $v]; |
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} |
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/* 8.. */ |
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protected function xAskQuery($v) |
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{ |
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if ($sub_r = $this->x('ASK\s+', $v)) { |
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3 |
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$r = [ |
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3 |
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'type' => 'ask', |
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3 |
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'dataset' => [], |
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]; |
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3 |
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$sub_v = $sub_r[1]; |
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/* dataset */ |
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3 |
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while ((list($sub_r, $sub_v) = $this->xDatasetClause($sub_v)) && $sub_r) { |
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$r['dataset'][] = $sub_r; |
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} |
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/* where */ |
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3 |
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if ((list($sub_r, $sub_v) = $this->xWhereClause($sub_v)) && $sub_r) { |
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3 |
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$r['pattern'] = $sub_r; |
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3 |
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return [$r, $sub_v]; |
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} else { |
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$this->logger->error('Missing or invalid WHERE clause.'); |
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} |
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} |
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92 |
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return [0, $v]; |
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} |
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287
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/* 9, 10, 11, 12 */ |
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97 |
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protected function xDatasetClause($v) |
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{ |
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97 |
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if ($r = $this->x('FROM(\s+NAMED)?\s+', $v)) { |
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31 |
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$named = $r[1] ? 1 : 0; |
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if ((list($r, $sub_v) = $this->xIRIref($r[2])) && $r) { |
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return [['graph' => $r, 'named' => $named], $sub_v]; |
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} |
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} |
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97 |
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return [0, $v]; |
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} |
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/* 13 */ |
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97 |
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protected function xWhereClause($v) |
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{ |
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97 |
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if ($r = $this->x('(WHERE)?', $v)) { |
|
306
|
97 |
|
$v = $r[2]; |
|
307
|
|
|
} |
|
308
|
97 |
|
if ((list($r, $v) = $this->xGroupGraphPattern($v)) && $r) { |
|
309
|
94 |
|
return [$r, $v]; |
|
310
|
|
|
} |
|
311
|
|
|
|
|
312
|
91 |
|
return [0, $v]; |
|
313
|
|
|
} |
|
314
|
|
|
|
|
315
|
|
|
/* 14, 15 */ |
|
316
|
|
|
|
|
317
|
|
|
protected function xSolutionModifier($v) |
|
318
|
|
|
{ |
|
319
|
|
|
$r = []; |
|
320
|
|
|
if ((list($sub_r, $sub_v) = $this->xOrderClause($v)) && $sub_r) { |
|
321
|
|
|
$r['order_infos'] = $sub_r; |
|
322
|
|
|
} |
|
323
|
|
|
while ((list($sub_r, $sub_v) = $this->xLimitOrOffsetClause($sub_v)) && $sub_r) { |
|
324
|
|
|
$r = array_merge($r, $sub_r); |
|
325
|
|
|
} |
|
326
|
|
|
|
|
327
|
|
|
return ($v == $sub_v) ? [0, $v] : [$r, $sub_v]; |
|
328
|
|
|
} |
|
329
|
|
|
|
|
330
|
|
|
/* 18, 19 */ |
|
331
|
|
|
|
|
332
|
97 |
|
protected function xLimitOrOffsetClause($v) |
|
333
|
|
|
{ |
|
334
|
97 |
|
if ($sub_r = $this->x('(LIMIT|OFFSET)', $v)) { |
|
335
|
3 |
|
$key = strtolower($sub_r[1]); |
|
336
|
3 |
|
$sub_v = $sub_r[2]; |
|
337
|
3 |
|
if ((list($sub_r, $sub_v) = $this->xINTEGER($sub_v)) && (false !== $sub_r)) { |
|
338
|
3 |
|
return [[$key => $sub_r], $sub_v]; |
|
339
|
|
|
} |
|
340
|
|
|
if ((list($sub_r, $sub_v) = $this->xPlaceholder($sub_v)) && (false !== $sub_r)) { |
|
341
|
|
|
return [[$key => $sub_r], $sub_v]; |
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
|
|
345
|
97 |
|
return [0, $v]; |
|
346
|
|
|
} |
|
347
|
|
|
|
|
348
|
|
|
/* 16 */ |
|
349
|
|
|
|
|
350
|
97 |
|
protected function xOrderClause($v) |
|
351
|
|
|
{ |
|
352
|
97 |
|
if ($sub_r = $this->x('ORDER BY\s+', $v)) { |
|
353
|
5 |
|
$sub_v = $sub_r[1]; |
|
354
|
5 |
|
$r = []; |
|
355
|
5 |
|
while ((list($sub_r, $sub_v) = $this->xOrderCondition($sub_v)) && $sub_r) { |
|
356
|
4 |
|
$r[] = $sub_r; |
|
357
|
|
|
} |
|
358
|
5 |
|
if (\count($r)) { |
|
359
|
4 |
|
return [$r, $sub_v]; |
|
360
|
|
|
} else { |
|
361
|
1 |
|
$this->logger->error('No order conditions specified.'); |
|
362
|
|
|
} |
|
363
|
|
|
} |
|
364
|
|
|
|
|
365
|
97 |
|
return [0, $v]; |
|
366
|
|
|
} |
|
367
|
|
|
|
|
368
|
|
|
/* 17, 27 */ |
|
369
|
|
|
|
|
370
|
5 |
|
protected function xOrderCondition($v) |
|
371
|
|
|
{ |
|
372
|
5 |
|
if ($sub_r = $this->x('(ASC|DESC)', $v)) { |
|
373
|
4 |
|
$dir = strtolower($sub_r[1]); |
|
374
|
4 |
|
$sub_v = $sub_r[2]; |
|
375
|
4 |
|
if ((list($sub_r, $sub_v) = $this->xBrackettedExpression($sub_v)) && $sub_r) { |
|
376
|
4 |
|
$sub_r['direction'] = $dir; |
|
377
|
|
|
|
|
378
|
4 |
|
return [$sub_r, $sub_v]; |
|
379
|
|
|
} |
|
380
|
5 |
|
} elseif ((list($sub_r, $sub_v) = $this->xVar($v)) && $sub_r) { |
|
381
|
|
|
$sub_r['direction'] = 'asc'; |
|
382
|
|
|
|
|
383
|
|
|
return [$sub_r, $sub_v]; |
|
384
|
5 |
|
} elseif ((list($sub_r, $sub_v) = $this->xBrackettedExpression($v)) && $sub_r) { |
|
385
|
|
|
return [$sub_r, $sub_v]; |
|
386
|
5 |
|
} elseif ((list($sub_r, $sub_v) = $this->xBuiltInCall($v)) && $sub_r) { |
|
387
|
|
|
$sub_r['direction'] = 'asc'; |
|
388
|
|
|
|
|
389
|
|
|
return [$sub_r, $sub_v]; |
|
390
|
5 |
|
} elseif ((list($sub_r, $sub_v) = $this->xFunctionCall($v)) && $sub_r) { |
|
391
|
|
|
$sub_r['direction'] = 'asc'; |
|
392
|
|
|
|
|
393
|
|
|
return [$sub_r, $sub_v]; |
|
394
|
|
|
} |
|
395
|
|
|
|
|
396
|
5 |
|
return [0, $v]; |
|
397
|
|
|
} |
|
398
|
|
|
|
|
399
|
|
|
/* 20 */ |
|
400
|
|
|
|
|
401
|
97 |
|
protected function xGroupGraphPattern($v) |
|
402
|
|
|
{ |
|
403
|
97 |
|
$pattern_id = substr(md5(uniqid(rand())), 0, 4); |
|
404
|
97 |
|
if ($sub_r = $this->x('\{', $v)) { |
|
405
|
95 |
|
$r = ['type' => 'group', 'patterns' => []]; |
|
406
|
95 |
|
$sub_v = $sub_r[1]; |
|
407
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xTriplesBlock($sub_v)) && $sub_r) { |
|
408
|
94 |
|
$this->indexBnodes($sub_r, $pattern_id); |
|
409
|
94 |
|
$r['patterns'][] = ['type' => 'triples', 'patterns' => $sub_r]; |
|
410
|
|
|
} |
|
411
|
|
|
do { |
|
412
|
95 |
|
$proceed = 0; |
|
413
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xGraphPatternNotTriples($sub_v)) && $sub_r) { |
|
414
|
3 |
|
$r['patterns'][] = $sub_r; |
|
415
|
3 |
|
$pattern_id = substr(md5(uniqid(rand())), 0, 4); |
|
416
|
3 |
|
$proceed = 1; |
|
417
|
95 |
|
} elseif ((list($sub_r, $sub_v) = $this->xFilter($sub_v)) && $sub_r) { |
|
418
|
23 |
|
$r['patterns'][] = ['type' => 'filter', 'constraint' => $sub_r]; |
|
419
|
23 |
|
$proceed = 1; |
|
420
|
|
|
} |
|
421
|
95 |
|
if ($sub_r = $this->x('\.', $sub_v)) { |
|
422
|
|
|
$sub_v = $sub_r[1]; |
|
423
|
|
|
} |
|
424
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xTriplesBlock($sub_v)) && $sub_r) { |
|
425
|
|
|
$this->indexBnodes($sub_r, $pattern_id); |
|
426
|
|
|
$r['patterns'][] = ['type' => 'triples', 'patterns' => $sub_r]; |
|
427
|
|
|
$proceed = 1; |
|
428
|
|
|
} |
|
429
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xPlaceholder($sub_v)) && $sub_r) { |
|
430
|
|
|
$r['patterns'][] = $sub_r; |
|
431
|
|
|
$proceed = 1; |
|
432
|
|
|
} |
|
433
|
95 |
|
} while ($proceed); |
|
434
|
95 |
|
if ($sub_r = $this->x('\}', $sub_v)) { |
|
435
|
94 |
|
$sub_v = $sub_r[1]; |
|
436
|
|
|
|
|
437
|
94 |
|
return [$r, $sub_v]; |
|
438
|
|
|
} |
|
439
|
1 |
|
$rest = preg_replace('/[\x0a|\x0d]/i', ' ', substr($sub_v, 0, 30)); |
|
440
|
1 |
|
$this->logger->error('Incomplete or invalid Group Graph pattern. Could not handle "'.$rest.'"'); |
|
441
|
|
|
} |
|
442
|
|
|
|
|
443
|
97 |
|
return [0, $v]; |
|
444
|
|
|
} |
|
445
|
|
|
|
|
446
|
94 |
|
protected function indexBnodes($triples, $pattern_id) |
|
447
|
|
|
{ |
|
448
|
94 |
|
$index_id = \count($this->bnode_pattern_index['patterns']); |
|
|
|
|
|
|
449
|
94 |
|
$index_id = $pattern_id; |
|
450
|
94 |
|
$this->bnode_pattern_index['patterns'][] = $triples; |
|
451
|
94 |
|
foreach ($triples as $t) { |
|
452
|
94 |
|
foreach (['s', 'p', 'o'] as $term) { |
|
453
|
94 |
|
if ('bnode' == $t[$term.'_type']) { |
|
454
|
|
|
$val = $t[$term]; |
|
455
|
|
|
if (isset($this->bnode_pattern_index['bnodes'][$val]) && ($this->bnode_pattern_index['bnodes'][$val] != $index_id)) { |
|
456
|
|
|
$this->logger->error('Re-used bnode label "'.$val.'" across graph patterns'); |
|
457
|
|
|
} else { |
|
458
|
|
|
$this->bnode_pattern_index['bnodes'][$val] = $index_id; |
|
459
|
|
|
} |
|
460
|
|
|
} |
|
461
|
|
|
} |
|
462
|
|
|
} |
|
463
|
|
|
} |
|
464
|
|
|
|
|
465
|
|
|
/* 22.., 25.. */ |
|
466
|
|
|
|
|
467
|
95 |
|
protected function xGraphPatternNotTriples($v) |
|
468
|
|
|
{ |
|
469
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xOptionalGraphPattern($v)) && $sub_r) { |
|
470
|
2 |
|
return [$sub_r, $sub_v]; |
|
471
|
|
|
} |
|
472
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xGraphGraphPattern($v)) && $sub_r) { |
|
473
|
|
|
return [$sub_r, $sub_v]; |
|
474
|
|
|
} |
|
475
|
95 |
|
$r = ['type' => 'union', 'patterns' => []]; |
|
476
|
95 |
|
$sub_v = $v; |
|
477
|
|
|
do { |
|
478
|
95 |
|
$proceed = 0; |
|
479
|
95 |
|
if ((list($sub_r, $sub_v) = $this->xGroupGraphPattern($sub_v)) && $sub_r) { |
|
480
|
1 |
|
$r['patterns'][] = $sub_r; |
|
481
|
1 |
|
if ($sub_r = $this->x('UNION', $sub_v)) { |
|
482
|
1 |
|
$sub_v = $sub_r[1]; |
|
483
|
1 |
|
$proceed = 1; |
|
484
|
|
|
} |
|
485
|
|
|
} |
|
486
|
95 |
|
} while ($proceed); |
|
487
|
95 |
|
$pc = \count($r['patterns']); |
|
488
|
95 |
|
if (1 == $pc) { |
|
489
|
|
|
return [$r['patterns'][0], $sub_v]; |
|
490
|
95 |
|
} elseif ($pc > 1) { |
|
491
|
1 |
|
return [$r, $sub_v]; |
|
492
|
|
|
} |
|
493
|
|
|
|
|
494
|
95 |
|
return [0, $v]; |
|
495
|
|
|
} |
|
496
|
|
|
|
|
497
|
|
|
/* 23 */ |
|
498
|
|
|
|
|
499
|
95 |
|
protected function xOptionalGraphPattern($v) |
|
500
|
|
|
{ |
|
501
|
95 |
|
if ($sub_r = $this->x('OPTIONAL', $v)) { |
|
502
|
2 |
|
$sub_v = $sub_r[1]; |
|
503
|
2 |
|
if ((list($sub_r, $sub_v) = $this->xGroupGraphPattern($sub_v)) && $sub_r) { |
|
504
|
2 |
|
return [['type' => 'optional', 'patterns' => $sub_r['patterns']], $sub_v]; |
|
505
|
|
|
} |
|
506
|
|
|
$this->logger->error('Missing or invalid Group Graph Pattern after OPTIONAL'); |
|
507
|
|
|
} |
|
508
|
|
|
|
|
509
|
95 |
|
return [0, $v]; |
|
510
|
|
|
} |
|
511
|
|
|
|
|
512
|
|
|
/* 24.. */ |
|
513
|
|
|
|
|
514
|
95 |
|
protected function xGraphGraphPattern($v) |
|
515
|
|
|
{ |
|
516
|
95 |
|
if ($sub_r = $this->x('GRAPH', $v)) { |
|
517
|
|
|
$sub_v = $sub_r[1]; |
|
518
|
|
|
$r = ['type' => 'graph', 'var' => '', 'uri' => '', 'patterns' => []]; |
|
519
|
|
|
if ((list($sub_r, $sub_v) = $this->xVar($sub_v)) && $sub_r) { |
|
520
|
|
|
$r['var'] = $sub_r; |
|
521
|
|
|
} elseif ((list($sub_r, $sub_v) = $this->xIRIref($sub_v)) && $sub_r) { |
|
522
|
|
|
$r['uri'] = $sub_r; |
|
523
|
|
|
} |
|
524
|
|
|
if ($r['var'] || $r['uri']) { |
|
525
|
|
|
if ((list($sub_r, $sub_v) = $this->xGroupGraphPattern($sub_v)) && $sub_r) { |
|
526
|
|
|
$r['patterns'][] = $sub_r; |
|
527
|
|
|
|
|
528
|
|
|
return [$r, $sub_v]; |
|
529
|
|
|
} |
|
530
|
|
|
$this->logger->error('Missing or invalid Graph Pattern'); |
|
531
|
|
|
} |
|
532
|
|
|
} |
|
533
|
|
|
|
|
534
|
95 |
|
return [0, $v]; |
|
535
|
|
|
} |
|
536
|
|
|
|
|
537
|
|
|
/* 26.., 27.. */ |
|
538
|
|
|
|
|
539
|
95 |
|
protected function xFilter($v) |
|
540
|
|
|
{ |
|
541
|
95 |
|
if ($r = $this->x('FILTER', $v)) { |
|
542
|
23 |
|
$sub_v = $r[1]; |
|
543
|
23 |
|
if ((list($r, $sub_v) = $this->xBrackettedExpression($sub_v)) && $r) { |
|
544
|
19 |
|
return [$r, $sub_v]; |
|
545
|
|
|
} |
|
546
|
4 |
|
if ((list($r, $sub_v) = $this->xBuiltInCall($sub_v)) && $r) { |
|
547
|
4 |
|
return [$r, $sub_v]; |
|
548
|
|
|
} |
|
549
|
|
|
if ((list($r, $sub_v) = $this->xFunctionCall($sub_v)) && $r) { |
|
550
|
|
|
return [$r, $sub_v]; |
|
551
|
|
|
} |
|
552
|
|
|
$this->logger->error('Incomplete FILTER'); |
|
553
|
|
|
} |
|
554
|
|
|
|
|
555
|
95 |
|
return [0, $v]; |
|
556
|
|
|
} |
|
557
|
|
|
|
|
558
|
|
|
/* 28.. */ |
|
559
|
|
|
|
|
560
|
5 |
|
protected function xFunctionCall($v) |
|
561
|
|
|
{ |
|
562
|
5 |
|
if ((list($r, $sub_v) = $this->xIRIref($v)) && $r) { |
|
563
|
|
|
if ((list($sub_r, $sub_v) = $this->xArgList($sub_v)) && $sub_r) { |
|
564
|
|
|
return [['type' => 'function_call', 'uri' => $r, 'args' => $sub_r], $sub_v]; |
|
565
|
|
|
} |
|
566
|
|
|
} |
|
567
|
|
|
|
|
568
|
5 |
|
return [0, $v]; |
|
569
|
|
|
} |
|
570
|
|
|
|
|
571
|
|
|
/* 29 */ |
|
572
|
|
|
|
|
573
|
18 |
|
protected function xArgList($v) |
|
574
|
|
|
{ |
|
575
|
18 |
|
$r = []; |
|
576
|
18 |
|
$sub_v = $v; |
|
577
|
18 |
|
$closed = 0; |
|
578
|
18 |
|
if ($sub_r = $this->x('\(', $sub_v)) { |
|
579
|
18 |
|
$sub_v = $sub_r[1]; |
|
580
|
|
|
do { |
|
581
|
18 |
|
$proceed = 0; |
|
582
|
18 |
|
if ((list($sub_r, $sub_v) = $this->xExpression($sub_v)) && $sub_r) { |
|
583
|
18 |
|
$r[] = $sub_r; |
|
584
|
18 |
|
if ($sub_r = $this->x('\,', $sub_v)) { |
|
585
|
4 |
|
$sub_v = $sub_r[1]; |
|
586
|
4 |
|
$proceed = 1; |
|
587
|
|
|
} |
|
588
|
|
|
} |
|
589
|
18 |
|
if ($sub_r = $this->x('\)', $sub_v)) { |
|
590
|
18 |
|
$sub_v = $sub_r[1]; |
|
591
|
18 |
|
$closed = 1; |
|
592
|
18 |
|
$proceed = 0; |
|
593
|
|
|
} |
|
594
|
18 |
|
} while ($proceed); |
|
595
|
|
|
} |
|
596
|
|
|
|
|
597
|
18 |
|
return $closed ? [$r, $sub_v] : [0, $v]; |
|
598
|
|
|
} |
|
599
|
|
|
|
|
600
|
|
|
/* 30, 31 */ |
|
601
|
|
|
|
|
602
|
92 |
|
protected function xConstructTemplate($v) |
|
603
|
|
|
{ |
|
604
|
92 |
|
if ($sub_r = $this->x('\{', $v)) { |
|
605
|
92 |
|
$r = []; |
|
606
|
92 |
|
if ((list($sub_r, $sub_v) = $this->xTriplesBlock($sub_r[1])) && \is_array($sub_r)) { |
|
607
|
92 |
|
$r = $sub_r; |
|
608
|
|
|
} |
|
609
|
92 |
|
if ($sub_r = $this->x('\}', $sub_v)) { |
|
610
|
91 |
|
return [$r, $sub_r[1]]; |
|
611
|
|
|
} |
|
612
|
|
|
} |
|
613
|
|
|
|
|
614
|
5 |
|
return [0, $v]; |
|
615
|
|
|
} |
|
616
|
|
|
|
|
617
|
|
|
/* 46, 47 */ |
|
618
|
|
|
|
|
619
|
27 |
|
protected function xExpression($v) |
|
620
|
|
|
{ |
|
621
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xConditionalAndExpression($v)) && $sub_r) { |
|
622
|
27 |
|
$r = ['type' => 'expression', 'sub_type' => 'or', 'patterns' => [$sub_r]]; |
|
623
|
|
|
do { |
|
624
|
27 |
|
$proceed = 0; |
|
625
|
27 |
|
if ($sub_r = $this->x('\|\|', $sub_v)) { |
|
626
|
|
|
$sub_v = $sub_r[1]; |
|
627
|
|
|
if ((list($sub_r, $sub_v) = $this->xConditionalAndExpression($sub_v)) && $sub_r) { |
|
628
|
|
|
$r['patterns'][] = $sub_r; |
|
629
|
|
|
$proceed = 1; |
|
630
|
|
|
} |
|
631
|
|
|
} |
|
632
|
27 |
|
} while ($proceed); |
|
633
|
|
|
|
|
634
|
27 |
|
return 1 == \count($r['patterns']) ? [$r['patterns'][0], $sub_v] : [$r, $sub_v]; |
|
635
|
|
|
} |
|
636
|
|
|
|
|
637
|
|
|
return [0, $v]; |
|
638
|
|
|
} |
|
639
|
|
|
|
|
640
|
|
|
/* 48.., 49.. */ |
|
641
|
|
|
|
|
642
|
27 |
|
protected function xConditionalAndExpression($v) |
|
643
|
|
|
{ |
|
644
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xRelationalExpression($v)) && $sub_r) { |
|
645
|
27 |
|
$r = ['type' => 'expression', 'sub_type' => 'and', 'patterns' => [$sub_r]]; |
|
646
|
|
|
do { |
|
647
|
27 |
|
$proceed = 0; |
|
648
|
27 |
|
if ($sub_r = $this->x('\&\&', $sub_v)) { |
|
649
|
1 |
|
$sub_v = $sub_r[1]; |
|
650
|
1 |
|
if ((list($sub_r, $sub_v) = $this->xRelationalExpression($sub_v)) && $sub_r) { |
|
651
|
1 |
|
$r['patterns'][] = $sub_r; |
|
652
|
1 |
|
$proceed = 1; |
|
653
|
|
|
} |
|
654
|
|
|
} |
|
655
|
27 |
|
} while ($proceed); |
|
656
|
|
|
|
|
657
|
27 |
|
return 1 == \count($r['patterns']) ? [$r['patterns'][0], $sub_v] : [$r, $sub_v]; |
|
658
|
|
|
} |
|
659
|
|
|
|
|
660
|
|
|
return [0, $v]; |
|
661
|
|
|
} |
|
662
|
|
|
|
|
663
|
|
|
/* 50, 51 */ |
|
664
|
|
|
|
|
665
|
27 |
|
protected function xRelationalExpression($v) |
|
666
|
|
|
{ |
|
667
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xAdditiveExpression($v)) && $sub_r) { |
|
668
|
27 |
|
$r = ['type' => 'expression', 'sub_type' => 'relational', 'patterns' => [$sub_r]]; |
|
669
|
|
|
do { |
|
670
|
27 |
|
$proceed = 0; |
|
671
|
|
|
/* don't mistake '<' + uriref with '<'-operator ("longest token" rule) */ |
|
672
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xIRI_REF($sub_v)) && $sub_r) { |
|
673
|
|
|
$this->logger->error('Expected operator, found IRIref: "'.$sub_r.'".'); |
|
674
|
|
|
} |
|
675
|
27 |
|
if ($sub_r = $this->x('(\!\=|\=\=|\=|\<\=|\>\=|\<|\>)', $sub_v)) { |
|
676
|
9 |
|
$op = $sub_r[1]; |
|
677
|
9 |
|
$sub_v = $sub_r[2]; |
|
678
|
9 |
|
$r['operator'] = $op; |
|
679
|
9 |
|
if ((list($sub_r, $sub_v) = $this->xAdditiveExpression($sub_v)) && $sub_r) { |
|
680
|
|
|
//$sub_r['operator'] = $op; |
|
681
|
9 |
|
$r['patterns'][] = $sub_r; |
|
682
|
9 |
|
$proceed = 1; |
|
683
|
|
|
} |
|
684
|
|
|
} |
|
685
|
27 |
|
} while ($proceed); |
|
686
|
|
|
|
|
687
|
27 |
|
return 1 == \count($r['patterns']) ? [$r['patterns'][0], $sub_v] : [$r, $sub_v]; |
|
688
|
|
|
} |
|
689
|
|
|
|
|
690
|
|
|
return [0, $v]; |
|
691
|
|
|
} |
|
692
|
|
|
|
|
693
|
|
|
/* 52 */ |
|
694
|
|
|
|
|
695
|
27 |
|
protected function xAdditiveExpression($v) |
|
696
|
|
|
{ |
|
697
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xMultiplicativeExpression($v)) && $sub_r) { |
|
698
|
27 |
|
$r = ['type' => 'expression', 'sub_type' => 'additive', 'patterns' => [$sub_r]]; |
|
699
|
|
|
do { |
|
700
|
27 |
|
$proceed = 0; |
|
701
|
27 |
|
if ($sub_r = $this->x('(\+|\-)', $sub_v)) { |
|
702
|
|
|
$op = $sub_r[1]; |
|
703
|
|
|
$sub_v = $sub_r[2]; |
|
704
|
|
|
if ((list($sub_r, $sub_v) = $this->xMultiplicativeExpression($sub_v)) && $sub_r) { |
|
705
|
|
|
$sub_r['operator'] = $op; |
|
706
|
|
|
$r['patterns'][] = $sub_r; |
|
707
|
|
|
$proceed = 1; |
|
708
|
|
|
} elseif ((list($sub_r, $sub_v) = $this->xNumericLiteral($sub_v)) && $sub_r) { |
|
709
|
|
|
$r['patterns'][] = ['type' => 'numeric', 'operator' => $op, 'value' => $sub_r]; |
|
710
|
|
|
$proceed = 1; |
|
711
|
|
|
} |
|
712
|
|
|
} |
|
713
|
27 |
|
} while ($proceed); |
|
714
|
|
|
//return array($r, $sub_v); |
|
715
|
27 |
|
return 1 == \count($r['patterns']) ? [$r['patterns'][0], $sub_v] : [$r, $sub_v]; |
|
716
|
|
|
} |
|
717
|
|
|
|
|
718
|
|
|
return [0, $v]; |
|
719
|
|
|
} |
|
720
|
|
|
|
|
721
|
|
|
/* 53 */ |
|
722
|
|
|
|
|
723
|
27 |
|
protected function xMultiplicativeExpression($v) |
|
724
|
|
|
{ |
|
725
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xUnaryExpression($v)) && $sub_r) { |
|
726
|
27 |
|
$r = ['type' => 'expression', 'sub_type' => 'multiplicative', 'patterns' => [$sub_r]]; |
|
727
|
|
|
do { |
|
728
|
27 |
|
$proceed = 0; |
|
729
|
27 |
|
if ($sub_r = $this->x('(\*|\/)', $sub_v)) { |
|
730
|
|
|
$op = $sub_r[1]; |
|
731
|
|
|
$sub_v = $sub_r[2]; |
|
732
|
|
|
if ((list($sub_r, $sub_v) = $this->xUnaryExpression($sub_v)) && $sub_r) { |
|
733
|
|
|
$sub_r['operator'] = $op; |
|
734
|
|
|
$r['patterns'][] = $sub_r; |
|
735
|
|
|
$proceed = 1; |
|
736
|
|
|
} |
|
737
|
|
|
} |
|
738
|
27 |
|
} while ($proceed); |
|
739
|
|
|
|
|
740
|
27 |
|
return 1 == \count($r['patterns']) ? [$r['patterns'][0], $sub_v] : [$r, $sub_v]; |
|
741
|
|
|
} |
|
742
|
|
|
|
|
743
|
|
|
return [0, $v]; |
|
744
|
|
|
} |
|
745
|
|
|
|
|
746
|
|
|
/* 54 */ |
|
747
|
|
|
|
|
748
|
27 |
|
protected function xUnaryExpression($v) |
|
749
|
|
|
{ |
|
750
|
27 |
|
$sub_v = $v; |
|
751
|
27 |
|
$op = ''; |
|
752
|
27 |
|
if ($sub_r = $this->x('(\!|\+|\-)', $sub_v)) { |
|
753
|
|
|
$op = $sub_r[1]; |
|
754
|
|
|
$sub_v = $sub_r[2]; |
|
755
|
|
|
} |
|
756
|
27 |
|
if ((list($sub_r, $sub_v) = $this->xPrimaryExpression($sub_v)) && $sub_r) { |
|
757
|
27 |
|
if (!\is_array($sub_r)) { |
|
758
|
|
|
$sub_r = ['type' => 'unary', 'expression' => $sub_r]; |
|
759
|
27 |
|
} elseif ($sub_op = $sub_r['operator'] ?? '') { |
|
760
|
|
|
$ops = ['!!' => '', '++' => '+', '--' => '+', '+-' => '-', '-+' => '-']; |
|
761
|
|
|
$op = isset($ops[$op.$sub_op]) ? $ops[$op.$sub_op] : $op.$sub_op; |
|
762
|
|
|
} |
|
763
|
27 |
|
$sub_r['operator'] = $op; |
|
764
|
|
|
|
|
765
|
27 |
|
return [$sub_r, $sub_v]; |
|
766
|
|
|
} |
|
767
|
|
|
|
|
768
|
|
|
return [0, $v]; |
|
769
|
|
|
} |
|
770
|
|
|
|
|
771
|
|
|
/* 55 */ |
|
772
|
|
|
|
|
773
|
27 |
|
protected function xPrimaryExpression($v) |
|
774
|
|
|
{ |
|
775
|
27 |
|
foreach (['BrackettedExpression', 'BuiltInCall', 'IRIrefOrFunction', 'RDFLiteral', 'NumericLiteral', 'BooleanLiteral', 'Var', 'Placeholder'] as $type) { |
|
776
|
27 |
|
$m = 'x'.$type; |
|
777
|
27 |
|
if ((list($sub_r, $sub_v) = $this->$m($v)) && $sub_r) { |
|
778
|
27 |
|
return [$sub_r, $sub_v]; |
|
779
|
|
|
} |
|
780
|
|
|
} |
|
781
|
|
|
|
|
782
|
|
|
return [0, $v]; |
|
783
|
|
|
} |
|
784
|
|
|
|
|
785
|
|
|
/* 56 */ |
|
786
|
|
|
|
|
787
|
28 |
|
protected function xBrackettedExpression($v) |
|
788
|
|
|
{ |
|
789
|
28 |
|
if ($r = $this->x('\(', $v)) { |
|
790
|
23 |
|
if ((list($r, $sub_v) = $this->xExpression($r[1])) && $r) { |
|
791
|
23 |
|
if ($sub_r = $this->x('\)', $sub_v)) { |
|
792
|
23 |
|
return [$r, $sub_r[1]]; |
|
793
|
|
|
} |
|
794
|
|
|
} |
|
795
|
|
|
} |
|
796
|
|
|
|
|
797
|
28 |
|
return [0, $v]; |
|
798
|
|
|
} |
|
799
|
|
|
|
|
800
|
|
|
/* 57.., 58.. */ |
|
801
|
|
|
|
|
802
|
28 |
|
protected function xBuiltInCall($v) |
|
803
|
|
|
{ |
|
804
|
28 |
|
if ($sub_r = $this->x('(str|lang|langmatches|datatype|bound|sameterm|isiri|isuri|isblank|isliteral|regex)\s*\(', $v)) { |
|
805
|
18 |
|
$r = ['type' => 'built_in_call', 'call' => strtolower($sub_r[1])]; |
|
806
|
18 |
|
if ((list($sub_r, $sub_v) = $this->xArgList('('.$sub_r[2])) && \is_array($sub_r)) { |
|
807
|
18 |
|
$r['args'] = $sub_r; |
|
808
|
|
|
|
|
809
|
18 |
|
return [$r, $sub_v]; |
|
810
|
|
|
} |
|
811
|
|
|
} |
|
812
|
|
|
|
|
813
|
28 |
|
return [0, $v]; |
|
814
|
|
|
} |
|
815
|
|
|
|
|
816
|
|
|
/* 59.. */ |
|
817
|
|
|
|
|
818
|
27 |
|
protected function xIRIrefOrFunction($v) |
|
819
|
|
|
{ |
|
820
|
27 |
|
if ((list($r, $v) = $this->xIRIref($v)) && $r) { |
|
821
|
1 |
|
if ((list($sub_r, $sub_v) = $this->xArgList($v)) && \is_array($sub_r)) { |
|
822
|
|
|
return [['type' => 'function', 'uri' => $r, 'args' => $sub_r], $sub_v]; |
|
823
|
|
|
} |
|
824
|
|
|
|
|
825
|
1 |
|
return [['type' => 'uri', 'uri' => $r], $sub_v]; |
|
826
|
|
|
} |
|
827
|
|
|
} |
|
828
|
|
|
|
|
829
|
|
|
/* 70.. @@sync with TurtleParser */ |
|
830
|
|
|
|
|
831
|
98 |
|
protected function xIRI_REF($v) |
|
832
|
|
|
{ |
|
833
|
98 |
|
if (($r = $this->x('\<(\$\{[^\>]*\})\>', $v)) && ($sub_r = $this->xPlaceholder($r[1]))) { |
|
|
|
|
|
|
834
|
|
|
return [$r[1], $r[2]]; |
|
835
|
98 |
|
} elseif ($r = $this->x('\<([^\<\>\s\"\|\^`]*)\>', $v)) { |
|
836
|
96 |
|
return [$r[1] ? $r[1] : true, $r[2]]; |
|
837
|
|
|
} |
|
838
|
98 |
|
/* allow reserved chars in obvious IRIs */ elseif ($r = $this->x('\<(https?\:[^\s][^\<\>]*)\>', $v)) { |
|
839
|
|
|
return [$r[1] ? $r[1] : true, $r[2]]; |
|
840
|
|
|
} |
|
841
|
|
|
|
|
842
|
98 |
|
return [0, $v]; |
|
843
|
|
|
} |
|
844
|
|
|
} |
|
845
|
|
|
|
sweetrdf /
in-memory-store-sqlite
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