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<?php |
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/****************************************************************************** |
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* An implementation of dicto (scg.unibe.ch/dicto) in and for PHP. |
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* |
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* Copyright (c) 2016 Richard Klees <[email protected]> |
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* |
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* This software is licensed under The MIT License. You should have received |
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* a copy of the license along with the code. |
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*/ |
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namespace Lechimp\Dicto\Rules; |
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use Lechimp\Dicto\Definition as Def; |
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use Lechimp\Dicto\Indexer\Insert; |
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use Lechimp\Dicto\Indexer\Location; |
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use Lechimp\Dicto\Analysis\Query; |
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use Lechimp\Dicto\Variables\Variable; |
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/** |
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* This is a rule that checks a relation between two entities |
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* in the code. |
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*/ |
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abstract class Relation extends Schema { |
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/** |
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* @inheritdoc |
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*/ |
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public function fetch_arguments(ArgumentParser $parser) { |
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$var = $parser->fetch_variable(); |
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return array($var); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function arguments_are_valid(array &$arguments) { |
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if (count($arguments) != 1) { |
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return false; |
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} |
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if (!($arguments[0] instanceof Variable)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function pprint(Rule $rule) { |
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return $this->name()." ".$rule->argument(0)->name(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function compile(Query $query, Rule $rule) { |
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$builder = $query->builder(); |
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$b = $builder->expr(); |
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$mode = $rule->mode(); |
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$entity = $rule->checked_on(); |
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$reference = $rule->argument(0); |
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if ($mode == Rule::MODE_CANNOT || $mode == Rule::MODE_ONLY_CAN) { |
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return $builder |
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->select |
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( "rel.entity_id as entity_id" |
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, "rel.reference_id as reference_id" |
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, "r.file as file" |
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, "r.line as line" |
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, "src.source as source" |
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) |
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->from($query->relations_table(), "rel") |
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->innerJoin("rel", $query->entity_table(), "e", "rel.entity_id = e.id") |
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->innerJoin("rel", $query->reference_table(), "r", "rel.reference_id = r.id") |
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->innerJoin |
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( "rel", $query->source_file_table(), "src" |
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, $b->andX |
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( $b->eq("src.line", "r.line") |
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, $b->eq("src.name", "r.file") |
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) |
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) |
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->where |
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( $b->eq("rel.name", $b->literal($this->name())) |
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, $entity->compile($b, "e") |
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, $reference->compile($b, "r") |
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) |
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->execute(); |
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} |
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if ($mode == Rule::MODE_MUST) { |
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return $builder |
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->select |
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( "e.id as entity_id" |
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, "e.file as file" |
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, "e.start_line as line" |
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, "src.source as source" |
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) |
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->from($query->entity_table(), "e") |
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->leftJoin |
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("e", $query->relations_table(), "rel" |
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, $b->andX |
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( $b->eq("rel.name", $b->literal($this->name())) |
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, $b->eq("rel.entity_id", "e.id") |
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) |
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) |
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->leftJoin |
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("rel", $query->reference_table(), "r" |
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, $b->andX |
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( $b->eq("rel.reference_id", "r.id") |
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, $reference->compile($b, "r") |
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) |
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) |
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->innerJoin |
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( "e", $query->source_file_table(), "src" |
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, $b->andX |
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( $b->eq("src.line", "e.start_line") |
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, $b->eq("src.name", "e.file") |
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) |
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) |
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->where |
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( $entity->compile($b, "e") |
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, $b->isNull("r.id") |
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) |
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->execute(); |
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} |
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throw new \LogicException("Unknown rule mode: '$mode'"); |
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} |
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/** |
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* Insert this relation somewhere, where it is recorded for all |
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* entities that the current location is in, except for files. |
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* |
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* @param Insert $insert |
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* @param Location $location |
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* @param int $ref_id |
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* @return null |
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*/ |
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protected function insert_relation_into(Insert $insert, Location $location, $ref_id) { |
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assert('is_int($ref_id)'); |
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foreach ($location->in_entities() as $entity) { |
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if ($entity[0] == Variable::FILE_TYPE) { |
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continue; |
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} |
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$insert->relation |
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( $this->name() |
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, $entity[1] |
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, $ref_id |
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); |
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} |
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} |
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} |
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lechimp-p /
dicto.php
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