Sphpeme\IfSpecialForm

Complexity

Total Complexity

3

Size/Duplication

Total Lines	16
Duplicated Lines	0 %

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	handles()	0	3	1
A	evaluate()	0	9	2

<?php

namespace Sphpeme;


use Sphpeme\Evaluator\SpecialForm;

class IfSpecialForm implements SpecialForm
{
    public function evaluate($exp, Env $env, Evaluator $evaluate)
    {
        [$if, $test, $true, $false] = $exp;

        return $evaluate(
            $evaluate($test, $env)
                ? $true
                : $false,
            $env);
    }

    public function handles($exp): bool
    {
        return $exp[0] == 'if';
    }
}