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<?php |
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/** |
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* @package s9e\SourceOptimizer |
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* @copyright Copyright (c) 2014-2018 The s9e Authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\SourceOptimizer\Passes; |
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use s9e\SourceOptimizer\ContextHelper; |
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class EnforceFQN extends AbstractPass |
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{ |
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/** |
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* @var array List of global constants (constant names used as keys) |
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*/ |
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protected $constants; |
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/** |
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* @var array List of internal functions (function names used as keys) |
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*/ |
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protected $functions; |
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/** |
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* Constructor |
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*/ |
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public function __construct() |
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{ |
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$this->constants = get_defined_constants(); |
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$this->functions = array_flip(get_defined_functions()['internal']); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function optimizeStream() |
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{ |
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ContextHelper::forEachNamespace( |
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$this->stream, |
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function ($namespace, $startOffset, $endOffset) |
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{ |
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if ($namespace !== '') |
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{ |
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$this->optimizeBlock($startOffset, $endOffset); |
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} |
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} |
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); |
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} |
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/** |
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* Test whether current token is followed by an object operator or a namespace separator |
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* |
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* @return bool |
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*/ |
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protected function isFollowedByOperator() |
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{ |
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$offset = $this->stream->key(); |
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$this->stream->next(); |
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$this->stream->skipNoise(); |
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$isFollowedByOperator = ($this->stream->valid() && $this->stream->isAny([T_NS_SEPARATOR, T_PAAMAYIM_NEKUDOTAYIM])); |
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$this->stream->seek($offset); |
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return $isFollowedByOperator; |
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} |
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/** |
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* Test whether current token is followed by a parenthesis |
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* |
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* @return bool |
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*/ |
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protected function isFollowedByParenthesis() |
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{ |
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$offset = $this->stream->key(); |
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$this->stream->next(); |
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$this->stream->skipNoise(); |
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$isFollowedByParenthesis = ($this->stream->valid() && $this->stream->current() === '('); |
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$this->stream->seek($offset); |
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return $isFollowedByParenthesis; |
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} |
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/** |
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* Test whether the token at given offset is preceded by a keyword |
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* |
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* @return bool |
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*/ |
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protected function isPrecededByKeyword() |
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{ |
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$offset = $this->stream->key(); |
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while (--$offset > 0) |
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{ |
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$tokenValue = $this->stream[$offset][0]; |
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if (in_array($tokenValue, [T_CLASS, T_CONST, T_FUNCTION, T_INTERFACE, T_NEW, T_NS_SEPARATOR, T_OBJECT_OPERATOR, T_PAAMAYIM_NEKUDOTAYIM, T_TRAIT, T_USE], true)) |
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{ |
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return true; |
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} |
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// Stop looking once we found a token that's not whitespace or comment |
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if (!in_array($tokenValue, [T_COMMENT, T_DOC_COMMENT, T_WHITESPACE], true)) |
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{ |
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break; |
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} |
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} |
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return false; |
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} |
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/** |
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* Optimize all constants and function calls in given range |
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* |
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* @param integer $startOffset |
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* @param integer $endOffset |
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* @return void |
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*/ |
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protected function optimizeBlock($startOffset, $endOffset) |
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{ |
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$this->stream->seek($startOffset); |
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while ($this->stream->skipTo(T_STRING) && $this->stream->key() <= $endOffset) |
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{ |
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if ($this->isPrecededByKeyword() || $this->isFollowedByOperator()) |
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{ |
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continue; |
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} |
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if ($this->isFollowedByParenthesis()) |
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{ |
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$this->processFunctionCall(); |
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} |
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else |
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{ |
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$this->processConstant(); |
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} |
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} |
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} |
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/** |
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* Process the constant at current offset |
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* |
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* @return void |
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*/ |
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View Code Duplication |
protected function processConstant() |
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{ |
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$constName = $this->stream->currentText(); |
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if (!isset($this->constants[$constName]) && !preg_match('(^(?:false|null|true)$)Di', $constName)) |
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{ |
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return; |
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} |
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$this->stream->replace([T_STRING, '\\' . $constName]); |
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} |
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/** |
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* Process the function name at current offset |
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* |
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* @return void |
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*/ |
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8 |
View Code Duplication |
protected function processFunctionCall() |
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{ |
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$funcName = $this->stream->currentText(); |
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8 |
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if (!isset($this->functions[$funcName])) |
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{ |
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return; |
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} |
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$this->stream->replace([T_STRING, '\\' . $funcName]); |
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} |
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} |
s9e /
SourceOptimizer
