1 files changed, 230 insertions, 0 deletions
diff --git a/vendor/scssphp/scssphp/src/Visitor/StatementSearchVisitor.php b/vendor/scssphp/scssphp/src/Visitor/StatementSearchVisitor.php
new file mode 100644
index 000000000..1cb011f00
--- /dev/null
+++ b/vendor/scssphp/scssphp/src/Visitor/StatementSearchVisitor.php
@@ -0,0 +1,230 @@
+<?php
+
+/**
+ * SCSSPHP
+ *
+ * @copyright 2012-2020 Leaf Corcoran
+ *
+ * @license http://opensource.org/licenses/MIT MIT
+ *
+ * @link http://scssphp.github.io/scssphp
+ */
+
+namespace ScssPhp\ScssPhp\Visitor;
+
+use ScssPhp\ScssPhp\Ast\Sass\Statement;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\AtRootRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\AtRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\CallableDeclaration;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ContentBlock;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ContentRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\DebugRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\Declaration;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\EachRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ErrorRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ExtendRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ForRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\FunctionRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\IfClause;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\IfRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ImportRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\IncludeRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\LoudComment;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\MediaRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\MixinRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ParentStatement;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\ReturnRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\SilentComment;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\StyleRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\Stylesheet;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\SupportsRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\VariableDeclaration;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\WarnRule;
+use ScssPhp\ScssPhp\Ast\Sass\Statement\WhileRule;
+use ScssPhp\ScssPhp\Util\IterableUtil;
+
+/**
+ * A StatementVisitor whose `visit*` methods default to returning `null`, but
+ * which returns the first non-`null` value returned by any method.
+ *
+ * This can be extended to find the first instance of particular nodes in the
+ * AST.
+ *
+ * @internal
+ *
+ * @template T
+ * @template-implements StatementVisitor<T|null>
+ */
+abstract class StatementSearchVisitor implements StatementVisitor
+{
+    public function visitAtRootRule(AtRootRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitAtRule(AtRule $node)
+    {
+        if ($node->getChildren() !== null) {
+            return $this->visitChildren($node->getChildren());
+        }
+
+        return null;
+    }
+
+    public function visitContentBlock(ContentBlock $node)
+    {
+        return $this->visitCallableDeclaration($node);
+    }
+
+    public function visitContentRule(ContentRule $node)
+    {
+        return null;
+    }
+
+    public function visitDebugRule(DebugRule $node)
+    {
+        return null;
+    }
+
+    public function visitDeclaration(Declaration $node)
+    {
+        if ($node->getChildren() !== null) {
+            return $this->visitChildren($node->getChildren());
+        }
+
+        return null;
+    }
+
+    public function visitEachRule(EachRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitErrorRule(ErrorRule $node)
+    {
+        return null;
+    }
+
+    public function visitExtendRule(ExtendRule $node)
+    {
+        return null;
+    }
+
+    public function visitForRule(ForRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitFunctionRule(FunctionRule $node)
+    {
+        return $this->visitCallableDeclaration($node);
+    }
+
+    public function visitIfRule(IfRule $node)
+    {
+        $value = IterableUtil::search($node->getClauses(), fn(IfClause $clause) => IterableUtil::search($clause->getChildren(), fn(Statement $child) => $child->accept($this)));
+
+        if ($node->getLastClause() !== null) {
+            $value ??= IterableUtil::search($node->getLastClause()->getChildren(), fn(Statement $child) => $child->accept($this));
+        }
+
+        return $value;
+    }
+
+    public function visitImportRule(ImportRule $node)
+    {
+        return null;
+    }
+
+    public function visitIncludeRule(IncludeRule $node)
+    {
+        if ($node->getContent() !== null) {
+            return $this->visitContentBlock($node->getContent());
+        }
+
+        return null;
+    }
+
+    public function visitLoudComment(LoudComment $node)
+    {
+        return null;
+    }
+
+    public function visitMediaRule(MediaRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitMixinRule(MixinRule $node)
+    {
+        return $this->visitCallableDeclaration($node);
+    }
+
+    public function visitReturnRule(ReturnRule $node)
+    {
+        return null;
+    }
+
+    public function visitSilentComment(SilentComment $node)
+    {
+        return null;
+    }
+
+    public function visitStyleRule(StyleRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitStylesheet(Stylesheet $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitSupportsRule(SupportsRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    public function visitVariableDeclaration(VariableDeclaration $node)
+    {
+        return null;
+    }
+
+    public function visitWarnRule(WarnRule $node)
+    {
+        return null;
+    }
+
+    public function visitWhileRule(WhileRule $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    /**
+     * Visits each of $node's expressions and children.
+     *
+     * The default implementations of {@see visitFunctionRule} and {@see visitMixinRule}
+     * call this.
+     *
+     * @return T|null
+     */
+    protected function visitCallableDeclaration(CallableDeclaration $node)
+    {
+        return $this->visitChildren($node->getChildren());
+    }
+
+    /**
+     * Visits each child in $children.
+     *
+     * The default implementation of the visit methods for all {@see ParentStatement}s
+     * call this.
+     *
+     * @param Statement[] $children
+     *
+     * @return T|null
+     */
+    protected function visitChildren(array $children)
+    {
+        return IterableUtil::search($children, fn (Statement $child) => $child->accept($this));
+    }
+}