暂存

vendor/illuminate/contracts/Database/Query/Expression.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Illuminate\Contracts\Database\Query;
+
+use Illuminate\Database\Grammar;
+
+interface Expression
+{
+    /**
+     * Get the value of the expression.
+     *
+     * @param  \Illuminate\Database\Grammar  $grammar
+     * @return string|int|float
+     */
+    public function getValue(Grammar $grammar);
+}