Implement the evaluation based on the new AST

src/Evaluation/ArgumentResults.php

@@ -0,0 +1,105 @@
+<?php
+
+/**
+ * SCSSPHP
+ *
+ * @copyright 2012-2020 Leaf Corcoran
+ *
+ * @license http://opensource.org/licenses/MIT MIT
+ *
+ * @link http://scssphp.github.io/scssphp
+ */
+
+namespace ScssPhp\ScssPhp\Evaluation;
+
+use ScssPhp\ScssPhp\Ast\AstNode;
+use ScssPhp\ScssPhp\Value\ListSeparator;
+use ScssPhp\ScssPhp\Value\Value;
+
+/**
+ * The result of evaluating arguments to a function or mixin.
+ *
+ * @internal
+ */
+final class ArgumentResults
+{
+    /**
+     * Arguments passed by position.
+     *
+     * @var list<Value>
+     */
+    private readonly array $positional;
+
+    /**
+     * The {@see AstNode}s that hold the spans for each {@see positional} argument.
+     *
+     * @var list<AstNode>
+     */
+    private readonly array $positionalNodes;
+
+    /**
+     * @var array<string, Value>
+     */
+    private readonly array $named;
+
+    /**
+     * The {@see AstNode}s that hold the spans for each {@see named} argument.
+     *
+     * @var array<string, AstNode>
+     */
+    private readonly array $namedNodes;
+
+    private readonly ListSeparator $separator;
+
+    /**
+     * @param list<Value>            $positional
+     * @param list<AstNode>          $positionalNodes
+     * @param array<string, Value>   $named
+     * @param array<string, AstNode> $namedNodes
+     */
+    public function __construct(array $positional, array $positionalNodes, array $named, array $namedNodes, ListSeparator $separator)
+    {
+        $this->positional = $positional;
+        $this->positionalNodes = $positionalNodes;
+        $this->named = $named;
+        $this->namedNodes = $namedNodes;
+        $this->separator = $separator;
+    }
+
+    /**
+     * @return list<Value>
+     */
+    public function getPositional(): array
+    {
+        return $this->positional;
+    }
+
+    /**
+     * @return list<AstNode>
+     */
+    public function getPositionalNodes(): array
+    {
+        return $this->positionalNodes;
+    }
+
+    /**
+     * @return array<string, Value>
+     */
+    public function getNamed(): array
+    {
+        return $this->named;
+    }
+
+    /**
+     * @return array<string, AstNode>
+     */
+    public function getNamedNodes(): array
+    {
+        return $this->namedNodes;
+    }
+
+    public function getSeparator(): ListSeparator
+    {
+        return $this->separator;
+    }
+}