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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\Analysis\Index; |
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use Lechimp\Dicto\Definition\ArgumentParser; |
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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\Variables\Variable; |
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use Lechimp\Dicto\Graph\Node; |
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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(Index $index, Rule $rule) { |
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$mode = $rule->mode(); |
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$var_left = $rule->checked_on(); |
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$var_right = $rule->argument(0); |
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$query = $index->query(); |
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$predicate_factory = $query->predicate_factory(); |
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if ($mode == Rule::MODE_CANNOT || $mode == Rule::MODE_ONLY_CAN) { |
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$filter_left = $var_left->compile($predicate_factory); |
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$filter_right = $var_right->compile($predicate_factory); |
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return [$query |
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->filter($filter_left) |
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->expand_relations([$this->name()]) |
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View Code Duplication |
->extract(function($e,&$r) use ($rule) { |
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$file = $e->property("file"); |
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assert('$file->type() == "file"'); |
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$r["file"] = $file->property("path"); |
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$line = $e->property("line"); |
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$r["line"] = $line; |
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$r["source"] = $file->property("source")[$line - 1]; |
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}) |
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->expand_target() |
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->filter($filter_right)] |
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; |
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} |
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if ($mode == Rule::MODE_MUST) { |
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$filter_left = $var_left->compile($predicate_factory); |
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$filter_right = $var_right->compile($predicate_factory)->compile(); |
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return [$query |
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->filter($filter_left) |
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->filter($predicate_factory->_custom(function(Node $n) use ($filter_right) { |
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$rels = $n->relations(function($r) { |
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return $r->type() == $this->name(); |
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}); |
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if (count($rels) == 0) { |
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return true; |
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} |
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foreach ($rels as $rel) { |
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if ($filter_right($rel->target())) { |
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return false; |
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} |
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} |
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return true; |
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})) |
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->extract(function($e,&$r) use ($index, $rule) { |
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$rels = $e->relations(function($r) { |
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return $r->type() == "defined in"; |
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}); |
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assert('count($rels) == 1'); |
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$file = $rels[0]->target(); |
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assert('$file->type() == "file"'); |
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$r["file"] = $file->property("path"); |
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$line = $rels[0]->property("start_line"); |
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$r["line"] = $line; |
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$r["source"] = $file->property("source")[$line - 1]; |
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})] |
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; |
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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. |
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* |
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* @param Insert $insert |
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* @param Location $location |
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* @param mixed $other |
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* @return null |
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*/ |
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protected function insert_relation_into(Insert $insert, Location $location, $other) { |
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if ($cit = $location->_class_interface_trait()) { |
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$insert->_relation |
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( $cit |
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, $this->name() |
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, $other |
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, $location->_file() |
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, $location->_line() |
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); |
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} |
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if ($fm = $location->_function_method()) { |
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$insert->_relation |
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( $fm |
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, $this->name() |
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, $other |
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, $location->_file() |
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, $location->_line() |
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); |
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} |
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// TODO: Should i be introducing namespace here? |
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} |
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} |
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lechimp-p /
dicto.php
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.