Sphpeme\ExpHandler\DefineExpHandler

Complexity

Total Complexity

3

Size/Duplication

Total Lines	18
Duplicated Lines	0 %

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	evaluate()	0	4	1
A	__construct()	0	3	1
A	handles()	0	3	1

<?php

namespace Sphpeme\ExpHandler;



use Sphpeme\Env;
use Sphpeme\Evaluator;
use Sphpeme\Symbol;

class DefineExpHandler implements ExpHandler
{
    private $defineSymbol;

    public function __construct()
    {
        $this->defineSymbol = Symbol::make('define');
    }

    public function evaluate($exp, Env $env, Evaluator $evaluate)
    {
        [$_, $symbol, $exp] = $exp;
        $env->$symbol = $evaluate($exp, $env);
    }

    public function handles($exp): bool
    {
        return $exp[0] === $this->defineSymbol;
    }
}