/**
* Compiles the node
*
* @param Context $context The context
* @param array|null $arguments Array of arguments
* @param boolean|null $important Important flag
* @return ParenNode|ExpressionNode|Node
*/
public function compile(Context $context, $arguments = null, $important = null)
{
$inParenthesis = $this->parens && !$this->parensInOp;
$doubleParen = false;
if ($inParenthesis) {
$context->inParenthesis();
}
$count = count($this->value);
if ($count > 1) {
$compiled = [];
foreach ($this->value as $v) {
/* @var $v Node */
$compiled[] = $v->compile($context);
}
$return = new ExpressionNode($compiled);
} elseif ($count === 1) {
if (property_exists($this->value[0], 'parens') && $this->value[0]->parens && property_exists($this->value[0], 'parensInOp') && !$this->value[0]->parensInOp) {
$doubleParen = true;
}
$return = $this->value[0]->compile($context);
} else {
$return = $this;
}
if ($inParenthesis) {
$context->outOfParenthesis();
}
if ($this->parens && $this->parensInOp && !$context->isMathOn() && !$doubleParen) {
$return = new ParenNode($return);
}
return $return;
}
/**
* Compiles the node.
*
* @param Context $context The context
* @param array|null $arguments Array of arguments
* @param bool|null $important Important flag
*
* @return NegativeNode|Node
*/
public function compile(Context $context, $arguments = null, $important = null)
{
if ($context->isMathOn()) {
$operation = new OperationNode('*', [new DimensionNode('-1'), $this->value]);
return $operation->compile($context);
} else {
return new self($this->value->compile($context));
}
}
/**
* Sets the imported file
*
* @param string $pathAbsolute The absolute path
* @param ImportedFile $file The imported file
* @param string $path The original path to import
* @param FileInfo $currentFileInfo
* @return Importer
*/
public function setImportedFile($pathAbsolute, ImportedFile $file, $path, FileInfo $currentFileInfo)
{
$this->importedFiles[$pathAbsolute] = [$file, $path, $currentFileInfo];
// save for source map generation
$this->context->setFileContent($pathAbsolute, $file->getContent());
return $this;
}
/**
* @param Context $context
*
* @return Node|RulesetNode
*/
public function callCompile(Context $context)
{
if ($this->frames) {
return $this->ruleset->compile(Context::createCopyForCompilation($context, array_merge($this->frames, $context->frames)));
}
return $this->ruleset->compile($context);
}
/**
* @covers createCopy
*/
public function testNormalizePath()
{
$env = new Context();
$copy = Context::createCopy($env, [1]);
$this->assertInstanceOf('ILess\\Context', $copy);
$this->assertEquals($copy->frames, [1]);
}
/**
* Converts the ruleset to CSS.
*
* @param RulesetNode $ruleset
* @param array $variables
*
* @return string The generated CSS code
*
* @throws
*/
protected function toCSS(RulesetNode $ruleset, array $variables)
{
$precision = ini_set('precision', 16);
$locale = setlocale(LC_NUMERIC, 0);
setlocale(LC_NUMERIC, 'C');
if (extension_loaded('xdebug')) {
$level = ini_set('xdebug.max_nesting_level', PHP_INT_MAX);
}
$e = $css = null;
try {
$this->prepareVariables($this->context, $variables);
// pre compilation visitors
foreach ($this->getPreCompileVisitors() as $visitor) {
/* @var $visitor Visitor */
$visitor->run($ruleset);
}
// compile the ruleset
$compiled = $ruleset->compile($this->context);
// post compilation visitors
foreach ($this->getPostCompileVisitors() as $visitor) {
/* @var $visitor Visitor */
$visitor->run($compiled);
}
$context = $this->getContext();
$context->numPrecision = 8;
// less.js compatibility
if ($context->sourceMap) {
$generator = new Generator($compiled, $this->context->getContentsMap(), $this->context->sourceMapOptions);
// will also save file
$css = $generator->generateCSS($this->context);
} else {
$generator = null;
$css = $compiled->toCSS($this->context);
}
if ($this->pluginManager) {
// post process
$postProcessors = $this->pluginManager->getPostProcessors();
foreach ($postProcessors as $postProcessor) {
/* @var $postProcessor PostProcessorInterface */
$css = $postProcessor->process($css, ['context' => $this->context, 'source_map' => $generator, 'importer' => $this->importer]);
}
}
if ($this->context->compress) {
$css = preg_replace('/(^(\\s)+)|((\\s)+$)/', '', $css);
}
} catch (\Exception $e) {
}
// restore
setlocale(LC_NUMERIC, $locale);
ini_set('precision', $precision);
if (extension_loaded('xdebug')) {
ini_set('xdebug.max_nesting_level', $level);
}
if ($e) {
throw $e;
}
return $css;
}
/**
* Match condition.
*
* @param array $arguments
* @param Context $context
*
* @return bool
*/
public function matchCondition(array $arguments, Context $context)
{
$lastSelector = $this->selectors[count($this->selectors) - 1];
if (!$lastSelector->compiledCondition) {
return false;
}
if ($lastSelector->condition && !$lastSelector->condition->compile(Context::createCopyForCompilation($context, $context->frames))) {
return false;
}
return true;
}
/**
* Match a condition.
*
* @param array $arguments
* @param Context $context
*
* @return bool
*/
public function matchCondition(array $arguments, Context $context)
{
if (!$this->condition) {
return true;
}
$frame = $this->compileParams($context, Context::createCopyForCompilation($context, array_merge($this->frames, $context->frames)), $arguments);
$compileEnv = Context::createCopyForCompilation($context, array_merge([$frame], $this->frames, $context->frames));
if (!$this->condition->compile($compileEnv)) {
return false;
}
return true;
}
/**
* Visits a import node.
*
* @param ImportNode $node The node
* @param VisitorArguments $arguments The arguments
*
* @return ImportNode
*/
public function visitImport(ImportNode $node, VisitorArguments $arguments)
{
if (!$node->css || $node->getOption('inline')) {
$context = Context::createCopyForCompilation($this->context, $this->context->frames);
$importParent = $context->frames[0];
++$this->importCount;
if ($node->isVariableImport()) {
$this->sequencer->addVariableImport(function () use($node, $context, $importParent) {
$this->processImportNode($node, $context, $importParent);
});
} else {
$this->sequencer->addImport(function () use($node, $context, $importParent) {
$this->processImportNode($node, $context, $importParent);
});
}
}
$arguments->visitDeeper = false;
return $node;
}
/**
* @param Context $context
* @param array $frames
*
* @return Context
*/
public static function createCopyForCompilation(Context $context, array $frames = [])
{
$copyProperties = ['compress', 'ieCompat', 'strictMath', 'strictUnits', 'sourceMap', 'importMultiple', 'dumpLineNumbers', 'urlArgs', 'importantScope', 'customVariables'];
$target = new self([], $context->getFunctionRegistry());
self::copyFromOriginal($context, $target, $copyProperties);
$target->frames = $frames;
return $target;
}
