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Diffstat (limited to '')
-rw-r--r-- | vendor/wikimedia/less.php/lib/Less/Tree/Variable.php | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/wikimedia/less.php/lib/Less/Tree/Variable.php b/vendor/wikimedia/less.php/lib/Less/Tree/Variable.php new file mode 100644 index 0000000..dcb1823 --- /dev/null +++ b/vendor/wikimedia/less.php/lib/Less/Tree/Variable.php @@ -0,0 +1,56 @@ +<?php +/** + * @private + */ +class Less_Tree_Variable extends Less_Tree { + + public $name; + public $index; + public $currentFileInfo; + public $evaluating = false; + public $type = 'Variable'; + + /** + * @param string $name + */ + public function __construct( $name, $index = null, $currentFileInfo = null ) { + $this->name = $name; + $this->index = $index; + $this->currentFileInfo = $currentFileInfo; + } + + /** + * @param Less_Environment $env + * @return Less_Tree + * @see less-2.5.3.js#Ruleset.prototype.eval + */ + public function compile( $env ) { + if ( $this->name[1] === '@' ) { + $v = new Less_Tree_Variable( substr( $this->name, 1 ), $this->index + 1, $this->currentFileInfo ); + // While some Less_Tree nodes have no 'value', we know these can't ocurr after a variable + // assignment (would have been a ParseError). + // TODO: Solve better (https://phabricator.wikimedia.org/T327082). + // @phan-suppress-next-line PhanUndeclaredProperty + $name = '@' . $v->compile( $env )->value; + } else { + $name = $this->name; + } + + if ( $this->evaluating ) { + throw new Less_Exception_Compiler( "Recursive variable definition for " . $name, null, $this->index, $this->currentFileInfo ); + } + + $this->evaluating = true; + + foreach ( $env->frames as $frame ) { + if ( $v = $frame->variable( $name ) ) { + $r = $v->value->compile( $env ); + $this->evaluating = false; + return $r; + } + } + + throw new Less_Exception_Compiler( "variable " . $name . " is undefined in file " . $this->currentFileInfo["filename"], null, $this->index, $this->currentFileInfo ); + } + +} |