Helix\DB\Expression

Complexity

Total Complexity

3

Size/Duplication

Total Lines	35
Duplicated Lines	0 %

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__toString()	0	2	1
A	__construct()	0	2	1
A	__callStatic()	0	4	1

<?php

namespace Helix\DB;

/**
 * A basic expression, exempt from being quoted.
 *
 * @method static ExpressionInterface avg($column)
 * @method static ExpressionInterface count($column)
 * @method static ExpressionInterface max($column)
 * @method static ExpressionInterface min($column)
 * @method static ExpressionInterface sum($column)
 */
class Expression implements ExpressionInterface {

    /**
     * @var string
     */
    protected $string;

    /**
     * Converts a camelCase method call to an UPPER_SNAKE_CASE function call,
     * with all arguments separated by spaces.
     *
     * `NAME(argument [argument...])`
     *
     * @param string $name
     * @param array $arguments
     * @return ExpressionInterface
     */
    public static function __callStatic (string $name, array $arguments): ExpressionInterface {
        $arguments = implode(' ', $arguments);
        $name = strtoupper(preg_replace('/(?<!^)[A-Z]/', '_$0', $name));
        return new static("{$name}({$arguments})");
    }

    /**
     * @param string $string
     */
    public function __construct (string $string) {
        $this->string = $string;
    }

    /**
     * @return string
     */
    public function __toString () {
        return $this->string;
    }
}