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-rw-r--r--library/vendor/lessphp/lib/Less/Tree/Ruleset.php620
1 files changed, 620 insertions, 0 deletions
diff --git a/library/vendor/lessphp/lib/Less/Tree/Ruleset.php b/library/vendor/lessphp/lib/Less/Tree/Ruleset.php
new file mode 100644
index 0000000..b621263
--- /dev/null
+++ b/library/vendor/lessphp/lib/Less/Tree/Ruleset.php
@@ -0,0 +1,620 @@
+<?php
+
+/**
+ * Ruleset
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Ruleset extends Less_Tree {
+
+ protected $lookups;
+ public $_variables;
+ public $_rulesets;
+
+ public $strictImports;
+
+ public $selectors;
+ public $rules;
+ public $root;
+ public $allowImports;
+ public $paths;
+ public $firstRoot;
+ public $type = 'Ruleset';
+ public $multiMedia;
+ public $allExtends;
+
+ public $ruleset_id;
+ public $originalRuleset;
+
+ public $first_oelements;
+
+ public function SetRulesetIndex() {
+ $this->ruleset_id = Less_Parser::$next_id++;
+ $this->originalRuleset = $this->ruleset_id;
+
+ if ( $this->selectors ) {
+ foreach ( $this->selectors as $sel ) {
+ if ( $sel->_oelements ) {
+ $this->first_oelements[$sel->_oelements[0]] = true;
+ }
+ }
+ }
+ }
+
+ public function __construct( $selectors, $rules, $strictImports = null ) {
+ $this->selectors = $selectors;
+ $this->rules = $rules;
+ $this->lookups = array();
+ $this->strictImports = $strictImports;
+ $this->SetRulesetIndex();
+ }
+
+ public function accept( $visitor ) {
+ if ( $this->paths ) {
+ $paths_len = count( $this->paths );
+ for ( $i = 0,$paths_len; $i < $paths_len; $i++ ) {
+ $this->paths[$i] = $visitor->visitArray( $this->paths[$i] );
+ }
+ } elseif ( $this->selectors ) {
+ $this->selectors = $visitor->visitArray( $this->selectors );
+ }
+
+ if ( $this->rules ) {
+ $this->rules = $visitor->visitArray( $this->rules );
+ }
+ }
+
+ public function compile( $env ) {
+ $ruleset = $this->PrepareRuleset( $env );
+
+ // Store the frames around mixin definitions,
+ // so they can be evaluated like closures when the time comes.
+ $rsRuleCnt = count( $ruleset->rules );
+ for ( $i = 0; $i < $rsRuleCnt; $i++ ) {
+ if ( $ruleset->rules[$i] instanceof Less_Tree_Mixin_Definition || $ruleset->rules[$i] instanceof Less_Tree_DetachedRuleset ) {
+ $ruleset->rules[$i] = $ruleset->rules[$i]->compile( $env );
+ }
+ }
+
+ $mediaBlockCount = 0;
+ if ( $env instanceof Less_Environment ) {
+ $mediaBlockCount = count( $env->mediaBlocks );
+ }
+
+ // Evaluate mixin calls.
+ $this->EvalMixinCalls( $ruleset, $env, $rsRuleCnt );
+
+ // Evaluate everything else
+ for ( $i = 0; $i < $rsRuleCnt; $i++ ) {
+ if ( !( $ruleset->rules[$i] instanceof Less_Tree_Mixin_Definition || $ruleset->rules[$i] instanceof Less_Tree_DetachedRuleset ) ) {
+ $ruleset->rules[$i] = $ruleset->rules[$i]->compile( $env );
+ }
+ }
+
+ // Evaluate everything else
+ for ( $i = 0; $i < $rsRuleCnt; $i++ ) {
+ $rule = $ruleset->rules[$i];
+
+ // for rulesets, check if it is a css guard and can be removed
+ if ( $rule instanceof Less_Tree_Ruleset && $rule->selectors && count( $rule->selectors ) === 1 ) {
+
+ // check if it can be folded in (e.g. & where)
+ if ( $rule->selectors[0]->isJustParentSelector() ) {
+ array_splice( $ruleset->rules, $i--, 1 );
+ $rsRuleCnt--;
+
+ for ( $j = 0; $j < count( $rule->rules ); $j++ ) {
+ $subRule = $rule->rules[$j];
+ if ( !( $subRule instanceof Less_Tree_Rule ) || !$subRule->variable ) {
+ array_splice( $ruleset->rules, ++$i, 0, array( $subRule ) );
+ $rsRuleCnt++;
+ }
+ }
+
+ }
+ }
+ }
+
+ // Pop the stack
+ $env->shiftFrame();
+
+ if ( $mediaBlockCount ) {
+ $len = count( $env->mediaBlocks );
+ for ( $i = $mediaBlockCount; $i < $len; $i++ ) {
+ $env->mediaBlocks[$i]->bubbleSelectors( $ruleset->selectors );
+ }
+ }
+
+ return $ruleset;
+ }
+
+ /**
+ * Compile Less_Tree_Mixin_Call objects
+ *
+ * @param Less_Tree_Ruleset $ruleset
+ * @param integer $rsRuleCnt
+ */
+ private function EvalMixinCalls( $ruleset, $env, &$rsRuleCnt ) {
+ for ( $i = 0; $i < $rsRuleCnt; $i++ ) {
+ $rule = $ruleset->rules[$i];
+
+ if ( $rule instanceof Less_Tree_Mixin_Call ) {
+ $rule = $rule->compile( $env );
+
+ $temp = array();
+ foreach ( $rule as $r ) {
+ if ( ( $r instanceof Less_Tree_Rule ) && $r->variable ) {
+ // do not pollute the scope if the variable is
+ // already there. consider returning false here
+ // but we need a way to "return" variable from mixins
+ if ( !$ruleset->variable( $r->name ) ) {
+ $temp[] = $r;
+ }
+ } else {
+ $temp[] = $r;
+ }
+ }
+ $temp_count = count( $temp ) - 1;
+ array_splice( $ruleset->rules, $i, 1, $temp );
+ $rsRuleCnt += $temp_count;
+ $i += $temp_count;
+ $ruleset->resetCache();
+
+ } elseif ( $rule instanceof Less_Tree_RulesetCall ) {
+
+ $rule = $rule->compile( $env );
+ $rules = array();
+ foreach ( $rule->rules as $r ) {
+ if ( ( $r instanceof Less_Tree_Rule ) && $r->variable ) {
+ continue;
+ }
+ $rules[] = $r;
+ }
+
+ array_splice( $ruleset->rules, $i, 1, $rules );
+ $temp_count = count( $rules );
+ $rsRuleCnt += $temp_count - 1;
+ $i += $temp_count - 1;
+ $ruleset->resetCache();
+ }
+
+ }
+ }
+
+ /**
+ * Compile the selectors and create a new ruleset object for the compile() method
+ */
+ private function PrepareRuleset( $env ) {
+ $hasOnePassingSelector = false;
+ $selectors = array();
+ if ( $this->selectors ) {
+ Less_Tree_DefaultFunc::error( "it is currently only allowed in parametric mixin guards," );
+
+ foreach ( $this->selectors as $s ) {
+ $selector = $s->compile( $env );
+ $selectors[] = $selector;
+ if ( $selector->evaldCondition ) {
+ $hasOnePassingSelector = true;
+ }
+ }
+
+ Less_Tree_DefaultFunc::reset();
+ } else {
+ $hasOnePassingSelector = true;
+ }
+
+ if ( $this->rules && $hasOnePassingSelector ) {
+ $rules = $this->rules;
+ } else {
+ $rules = array();
+ }
+
+ $ruleset = new Less_Tree_Ruleset( $selectors, $rules, $this->strictImports );
+
+ $ruleset->originalRuleset = $this->ruleset_id;
+
+ $ruleset->root = $this->root;
+ $ruleset->firstRoot = $this->firstRoot;
+ $ruleset->allowImports = $this->allowImports;
+
+ // push the current ruleset to the frames stack
+ $env->unshiftFrame( $ruleset );
+
+ // Evaluate imports
+ if ( $ruleset->root || $ruleset->allowImports || !$ruleset->strictImports ) {
+ $ruleset->evalImports( $env );
+ }
+
+ return $ruleset;
+ }
+
+ function evalImports( $env ) {
+ $rules_len = count( $this->rules );
+ for ( $i = 0; $i < $rules_len; $i++ ) {
+ $rule = $this->rules[$i];
+
+ if ( $rule instanceof Less_Tree_Import ) {
+ $rules = $rule->compile( $env );
+ if ( is_array( $rules ) ) {
+ array_splice( $this->rules, $i, 1, $rules );
+ $temp_count = count( $rules ) - 1;
+ $i += $temp_count;
+ $rules_len += $temp_count;
+ } else {
+ array_splice( $this->rules, $i, 1, array( $rules ) );
+ }
+
+ $this->resetCache();
+ }
+ }
+ }
+
+ function makeImportant() {
+ $important_rules = array();
+ foreach ( $this->rules as $rule ) {
+ if ( $rule instanceof Less_Tree_Rule || $rule instanceof Less_Tree_Ruleset || $rule instanceof Less_Tree_NameValue ) {
+ $important_rules[] = $rule->makeImportant();
+ } else {
+ $important_rules[] = $rule;
+ }
+ }
+
+ return new Less_Tree_Ruleset( $this->selectors, $important_rules, $this->strictImports );
+ }
+
+ public function matchArgs( $args ) {
+ return !$args;
+ }
+
+ // lets you call a css selector with a guard
+ public function matchCondition( $args, $env ) {
+ $lastSelector = end( $this->selectors );
+
+ if ( !$lastSelector->evaldCondition ) {
+ return false;
+ }
+ if ( $lastSelector->condition && !$lastSelector->condition->compile( $env->copyEvalEnv( $env->frames ) ) ) {
+ return false;
+ }
+ return true;
+ }
+
+ function resetCache() {
+ $this->_rulesets = null;
+ $this->_variables = null;
+ $this->lookups = array();
+ }
+
+ public function variables() {
+ $this->_variables = array();
+ foreach ( $this->rules as $r ) {
+ if ( $r instanceof Less_Tree_Rule && $r->variable === true ) {
+ $this->_variables[$r->name] = $r;
+ }
+ }
+ }
+
+ public function variable( $name ) {
+ if ( is_null( $this->_variables ) ) {
+ $this->variables();
+ }
+ return isset($this->_variables[$name]) ? $this->_variables[$name] : null;
+ }
+
+ public function find( $selector, $self = null ) {
+ $key = implode( ' ', $selector->_oelements );
+
+ if ( !isset( $this->lookups[$key] ) ) {
+
+ if ( !$self ) {
+ $self = $this->ruleset_id;
+ }
+
+ $this->lookups[$key] = array();
+
+ $first_oelement = $selector->_oelements[0];
+
+ foreach ( $this->rules as $rule ) {
+ if ( $rule instanceof Less_Tree_Ruleset && $rule->ruleset_id != $self ) {
+
+ if ( isset( $rule->first_oelements[$first_oelement] ) ) {
+
+ foreach ( $rule->selectors as $ruleSelector ) {
+ $match = $selector->match( $ruleSelector );
+ if ( $match ) {
+ if ( $selector->elements_len > $match ) {
+ $this->lookups[$key] = array_merge( $this->lookups[$key], $rule->find( new Less_Tree_Selector( array_slice( $selector->elements, $match ) ), $self ) );
+ } else {
+ $this->lookups[$key][] = $rule;
+ }
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return $this->lookups[$key];
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ) {
+ if ( !$this->root ) {
+ Less_Environment::$tabLevel++;
+ }
+
+ $tabRuleStr = $tabSetStr = '';
+ if ( !Less_Parser::$options['compress'] ) {
+ if ( Less_Environment::$tabLevel ) {
+ $tabRuleStr = "\n".str_repeat( Less_Parser::$options['indentation'], Less_Environment::$tabLevel );
+ $tabSetStr = "\n".str_repeat( Less_Parser::$options['indentation'], Less_Environment::$tabLevel - 1 );
+ } else {
+ $tabSetStr = $tabRuleStr = "\n";
+ }
+ }
+
+ $ruleNodes = array();
+ $rulesetNodes = array();
+ foreach ( $this->rules as $rule ) {
+
+ $class = get_class( $rule );
+ if ( ( $class === 'Less_Tree_Media' ) || ( $class === 'Less_Tree_Directive' ) || ( $this->root && $class === 'Less_Tree_Comment' ) || ( $class === 'Less_Tree_Ruleset' && $rule->rules ) ) {
+ $rulesetNodes[] = $rule;
+ } else {
+ $ruleNodes[] = $rule;
+ }
+ }
+
+ // If this is the root node, we don't render
+ // a selector, or {}.
+ if ( !$this->root ) {
+
+ /*
+ debugInfo = tree.debugInfo(env, this, tabSetStr);
+
+ if (debugInfo) {
+ output.add(debugInfo);
+ output.add(tabSetStr);
+ }
+ */
+
+ $paths_len = count( $this->paths );
+ for ( $i = 0; $i < $paths_len; $i++ ) {
+ $path = $this->paths[$i];
+ $firstSelector = true;
+
+ foreach ( $path as $p ) {
+ $p->genCSS( $output, $firstSelector );
+ $firstSelector = false;
+ }
+
+ if ( $i + 1 < $paths_len ) {
+ $output->add( ',' . $tabSetStr );
+ }
+ }
+
+ $output->add( ( Less_Parser::$options['compress'] ? '{' : " {" ) . $tabRuleStr );
+ }
+
+ // Compile rules and rulesets
+ $ruleNodes_len = count( $ruleNodes );
+ $rulesetNodes_len = count( $rulesetNodes );
+ for ( $i = 0; $i < $ruleNodes_len; $i++ ) {
+ $rule = $ruleNodes[$i];
+
+ // @page{ directive ends up with root elements inside it, a mix of rules and rulesets
+ // In this instance we do not know whether it is the last property
+ if ( $i + 1 === $ruleNodes_len && ( !$this->root || $rulesetNodes_len === 0 || $this->firstRoot ) ) {
+ Less_Environment::$lastRule = true;
+ }
+
+ $rule->genCSS( $output );
+
+ if ( !Less_Environment::$lastRule ) {
+ $output->add( $tabRuleStr );
+ } else {
+ Less_Environment::$lastRule = false;
+ }
+ }
+
+ if ( !$this->root ) {
+ $output->add( $tabSetStr . '}' );
+ Less_Environment::$tabLevel--;
+ }
+
+ $firstRuleset = true;
+ $space = ( $this->root ? $tabRuleStr : $tabSetStr );
+ for ( $i = 0; $i < $rulesetNodes_len; $i++ ) {
+
+ if ( $ruleNodes_len && $firstRuleset ) {
+ $output->add( $space );
+ } elseif ( !$firstRuleset ) {
+ $output->add( $space );
+ }
+ $firstRuleset = false;
+ $rulesetNodes[$i]->genCSS( $output );
+ }
+
+ if ( !Less_Parser::$options['compress'] && $this->firstRoot ) {
+ $output->add( "\n" );
+ }
+
+ }
+
+ function markReferenced() {
+ if ( !$this->selectors ) {
+ return;
+ }
+ foreach ( $this->selectors as $selector ) {
+ $selector->markReferenced();
+ }
+ }
+
+ public function joinSelectors( $context, $selectors ) {
+ $paths = array();
+ if ( is_array( $selectors ) ) {
+ foreach ( $selectors as $selector ) {
+ $this->joinSelector( $paths, $context, $selector );
+ }
+ }
+ return $paths;
+ }
+
+ public function joinSelector( &$paths, $context, $selector ) {
+ $hasParentSelector = false;
+
+ foreach ( $selector->elements as $el ) {
+ if ( $el->value === '&' ) {
+ $hasParentSelector = true;
+ }
+ }
+
+ if ( !$hasParentSelector ) {
+ if ( $context ) {
+ foreach ( $context as $context_el ) {
+ $paths[] = array_merge( $context_el, array( $selector ) );
+ }
+ } else {
+ $paths[] = array( $selector );
+ }
+ return;
+ }
+
+ // The paths are [[Selector]]
+ // The first list is a list of comma separated selectors
+ // The inner list is a list of inheritance separated selectors
+ // e.g.
+ // .a, .b {
+ // .c {
+ // }
+ // }
+ // == [[.a] [.c]] [[.b] [.c]]
+ //
+
+ // the elements from the current selector so far
+ $currentElements = array();
+ // the current list of new selectors to add to the path.
+ // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
+ // by the parents
+ $newSelectors = array( array() );
+
+ foreach ( $selector->elements as $el ) {
+
+ // non parent reference elements just get added
+ if ( $el->value !== '&' ) {
+ $currentElements[] = $el;
+ } else {
+ // the new list of selectors to add
+ $selectorsMultiplied = array();
+
+ // merge the current list of non parent selector elements
+ // on to the current list of selectors to add
+ if ( $currentElements ) {
+ $this->mergeElementsOnToSelectors( $currentElements, $newSelectors );
+ }
+
+ // loop through our current selectors
+ foreach ( $newSelectors as $sel ) {
+
+ // if we don't have any parent paths, the & might be in a mixin so that it can be used
+ // whether there are parents or not
+ if ( !$context ) {
+ // the combinator used on el should now be applied to the next element instead so that
+ // it is not lost
+ if ( $sel ) {
+ $sel[0]->elements = array_slice( $sel[0]->elements, 0 );
+ $sel[0]->elements[] = new Less_Tree_Element( $el->combinator, '', $el->index, $el->currentFileInfo );
+ }
+ $selectorsMultiplied[] = $sel;
+ } else {
+
+ // and the parent selectors
+ foreach ( $context as $parentSel ) {
+ // We need to put the current selectors
+ // then join the last selector's elements on to the parents selectors
+
+ // our new selector path
+ $newSelectorPath = array();
+ // selectors from the parent after the join
+ $afterParentJoin = array();
+ $newJoinedSelectorEmpty = true;
+
+ // construct the joined selector - if & is the first thing this will be empty,
+ // if not newJoinedSelector will be the last set of elements in the selector
+ if ( $sel ) {
+ $newSelectorPath = $sel;
+ $lastSelector = array_pop( $newSelectorPath );
+ $newJoinedSelector = $selector->createDerived( array_slice( $lastSelector->elements, 0 ) );
+ $newJoinedSelectorEmpty = false;
+ } else {
+ $newJoinedSelector = $selector->createDerived( array() );
+ }
+
+ // put together the parent selectors after the join
+ if ( count( $parentSel ) > 1 ) {
+ $afterParentJoin = array_merge( $afterParentJoin, array_slice( $parentSel, 1 ) );
+ }
+
+ if ( $parentSel ) {
+ $newJoinedSelectorEmpty = false;
+
+ // join the elements so far with the first part of the parent
+ $newJoinedSelector->elements[] = new Less_Tree_Element( $el->combinator, $parentSel[0]->elements[0]->value, $el->index, $el->currentFileInfo );
+
+ $newJoinedSelector->elements = array_merge( $newJoinedSelector->elements, array_slice( $parentSel[0]->elements, 1 ) );
+ }
+
+ if ( !$newJoinedSelectorEmpty ) {
+ // now add the joined selector
+ $newSelectorPath[] = $newJoinedSelector;
+ }
+
+ // and the rest of the parent
+ $newSelectorPath = array_merge( $newSelectorPath, $afterParentJoin );
+
+ // add that to our new set of selectors
+ $selectorsMultiplied[] = $newSelectorPath;
+ }
+ }
+ }
+
+ // our new selectors has been multiplied, so reset the state
+ $newSelectors = $selectorsMultiplied;
+ $currentElements = array();
+ }
+ }
+
+ // if we have any elements left over (e.g. .a& .b == .b)
+ // add them on to all the current selectors
+ if ( $currentElements ) {
+ $this->mergeElementsOnToSelectors( $currentElements, $newSelectors );
+ }
+ foreach ( $newSelectors as $new_sel ) {
+ if ( $new_sel ) {
+ $paths[] = $new_sel;
+ }
+ }
+ }
+
+ function mergeElementsOnToSelectors( $elements, &$selectors ) {
+ if ( !$selectors ) {
+ $selectors[] = array( new Less_Tree_Selector( $elements ) );
+ return;
+ }
+
+ foreach ( $selectors as &$sel ) {
+
+ // if the previous thing in sel is a parent this needs to join on to it
+ if ( $sel ) {
+ $last = count( $sel ) - 1;
+ $sel[$last] = $sel[$last]->createDerived( array_merge( $sel[$last]->elements, $elements ) );
+ } else {
+ $sel[] = new Less_Tree_Selector( $elements );
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-03 22:26:35 +0000