Added CURDATE function

Author: dmitr1y

src/Processor/Expression/FunctionEvaluator.php

@@ -94,6 +94,8 @@ public static function evaluate(
                 return self::sqlDay($conn, $scope, $expr, $row, $result);
             case 'LAST_DAY':
                 return self::sqlLastDay($conn, $scope, $expr, $row, $result);
+            case 'CURDATE':
+                return self::sqlCurDate($expr);
         }
 
         throw new ProcessorException("Function " . $expr->functionName . " not implemented yet");
@@ -203,6 +205,9 @@ public static function getColumnSchema(
             case 'NOW':
                 return new Column\DateTime();
 
+            case 'CURDATE':
+                return new Column\Date();
+
             case 'DATE':
             case 'LAST_DAY':
                 $arg = Evaluator::getColumnSchema($expr->args[0], $scope, $columns);
@@ -1007,6 +1012,20 @@ private static function sqlLastDay(
         return (new \DateTimeImmutable($subject))->format('Y-m-t');
     }
 
+    /**
+     * @param array<string, mixed> $row
+     */
+    private static function sqlCurDate(FunctionExpression $expr): string
+    {
+        $args = $expr->args;
+
+        if (\count($args) !== 0) {
+            throw new ProcessorException("MySQL CURDATE() function takes no arguments.");
+        }
+
+        return (new \DateTimeImmutable())->format('Y-m-d');
+    }
+
     /**
      * @param array<string, mixed> $row
      *

tests/EndToEndTest.php

@@ -463,6 +463,23 @@ public function testDateArithhmetic()
         );
     }
 
+    public function testCurDateFunction()
+    {
+        $pdo = self::getPdo('mysql:foo');
+
+        $query = $pdo->prepare('SELECT CURDATE() AS date');
+
+        $query->execute();
+        $current_date = date('Y-m-d');
+
+        $this->assertSame(
+            [[
+                'date' => $current_date,
+            ]],
+            $query->fetchAll(\PDO::FETCH_ASSOC)
+        );
+    }
+
     public function testInOperator()
     {
         $pdo = self::getPdo('mysql:foo');