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<?php /** * SCSSPHP * * @copyright 2012-2020 Leaf Corcoran * * @license http://opensource.org/licenses/MIT MIT * * @link http://scssphp.github.io/scssphp / namespace ScssPhp\ScssPhp\Function; use ScssPhp\ScssPhp\Ast\Selector\ComplexSelector; use ScssPhp\ScssPhp\Ast\Selector\ComplexSelectorComponent; use ScssPhp\ScssPhp\Ast\Selector\CompoundSelector; use ScssPhp\ScssPhp\Ast\Selector\ParentSelector; use ScssPhp\ScssPhp\Ast\Selector\SelectorList; use ScssPhp\ScssPhp\Ast\Selector\SimpleSelector; use ScssPhp\ScssPhp\Ast\Selector\TypeSelector; use ScssPhp\ScssPhp\Ast\Selector\UniversalSelector; use ScssPhp\ScssPhp\Evaluation\EvaluationContext; use ScssPhp\ScssPhp\Exception\SassScriptException; use ScssPhp\ScssPhp\Extend\ConcreteExtensionStore; use ScssPhp\ScssPhp\Util\ArrayUtil; use ScssPhp\ScssPhp\Value\ListSeparator; use ScssPhp\ScssPhp\Value\SassBoolean; use ScssPhp\ScssPhp\Value\SassList; use ScssPhp\ScssPhp\Value\SassNull; use ScssPhp\ScssPhp\Value\SassString; use ScssPhp\ScssPhp\Value\Value; /* * @internal / final class SelectorFunctions { /* * @param list<Value> $arguments / public static function nest(array $arguments): Value { $selectors = $arguments[0]->asList(); if (\count($selectors) === 0) { throw new SassScriptException('$selectors: At least one selector must be passed.'); } $first = true; return ArrayUtil::reduce(array_map(function (Value $selector) use (&$first) { $result = $selector->assertSelector(allowParent: !$first); $first = false; return $result; }, $selectors), fn (SelectorList $parent, SelectorList $child) => $child->nestWithin($parent))->asSassList(); } /* * @param list<Value> $arguments / public static function append(array $arguments): Value { $selectors = $arguments[0]->asList(); if (\count($selectors) === 0) { throw new SassScriptException('$selectors: At least one selector must be passed.'); } $span = EvaluationContext::getCurrent()->getCurrentCallableSpan(); return ArrayUtil::reduce(array_map(fn(Value $selector) => $selector->assertSelector(), $selectors), function (SelectorList $parent, SelectorList $child) use ($span) { return (new SelectorList(array_map(function (ComplexSelector $complex) use ($span, $parent) { if (\count($complex->getLeadingCombinators()) > 0) { throw new SassScriptException("Can't append $complex to $parent."); } $component = $complex->getComponents()[0]; $rest = array_slice($complex->getComponents(), 1); $newCompound = self::prependParent($component->getSelector()); if ($newCompound === null) { throw new SassScriptException("Can't append $complex to $parent."); } return new ComplexSelector([], [ new ComplexSelectorComponent($newCompound, $component->getCombinators(), $span), ...$rest, ], $span); }, $child->getComponents()), $span))->nestWithin($parent); })->asSassList(); } /* * @param list<Value> $arguments / public static function extend(array $arguments): Value { $selector = $arguments[0]->assertSelector('selector'); $selector->assertNotBogus('selector'); $target = $arguments[1]->assertSelector('extendee'); $target->assertNotBogus('extendee'); $source = $arguments[2]->assertSelector('extender'); $source->assertNotBogus('extender'); return ConcreteExtensionStore::extend($selector, $source, $target, EvaluationContext::getCurrent()->getCurrentCallableSpan())->asSassList(); } /* * @param list<Value> $arguments / public static function replace(array $arguments): Value { $selector = $arguments[0]->assertSelector('selector'); $selector->assertNotBogus('selector'); $target = $arguments[1]->assertSelector('original'); $target->assertNotBogus('original'); $source = $arguments[2]->assertSelector('replacement'); $source->assertNotBogus('replacement'); return ConcreteExtensionStore::replace($selector, $source, $target, EvaluationContext::getCurrent()->getCurrentCallableSpan())->asSassList(); } /* * @param list<Value> $arguments / public static function unify(array $arguments): Value { $selector1 = $arguments[0]->assertSelector('selector1'); $selector1->assertNotBogus('selector1'); $selector2 = $arguments[1]->assertSelector('selector2'); $selector2->assertNotBogus('selector2'); return $selector1->unify($selector2)?->asSassList() ?? SassNull::create(); } /* * @param list<Value> $arguments / public static function isSuperselector(array $arguments): Value { $selector1 = $arguments[0]->assertSelector('super'); $selector1->assertNotBogus('super'); $selector2 = $arguments[1]->assertSelector('sub'); $selector2->assertNotBogus('sub'); return SassBoolean::create($selector1->isSuperselector($selector2)); } /* * @param list<Value> $arguments / public static function simpleSelectors(array $arguments): Value { $selector = $arguments[0]->assertCompoundSelector('selector'); return new SassList( array_map(fn (SimpleSelector $simple) => new SassString((string) $simple, false), $selector->getComponents()), ListSeparator::COMMA ); } /* * @param list<Value> $arguments / public static function parse(array $arguments): Value { return $arguments[0]->assertSelector('selector')->asSassList(); } /* * Adds a {@see ParentSelector} to the beginning of $compound, or returns `null` if * that wouldn't produce a valid selector. */ private static function prependParent(CompoundSelector $compound): ?CompoundSelector { $span = EvaluationContext::getCurrent()->getCurrentCallableSpan(); $firstComponent = $compound->getComponents()[0]; if ($firstComponent instanceof UniversalSelector) { return null; } if ($firstComponent instanceof TypeSelector && $firstComponent->getName()->getNamespace() !== null) { return null; } if ($firstComponent instanceof TypeSelector) { return new CompoundSelector([ new ParentSelector($span, $firstComponent->getName()->getName()), ...array_slice($compound->getComponents(), 1), ], $span); } return new CompoundSelector([ new ParentSelector($span), ...$compound->getComponents(), ], $span); } }

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