NamedLetHandler::evaluate() - Code Metrics - mattwellss/sphpeme - Measure and Improve Code Quality continuously with Scrutinizer

NamedLetHandler::evaluate() A
last analyzed 2019-11-08 19:48 UTC

↳ Parent: NamedLetHandler

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
nc	1
nop	3
dl	0
loc	12
ccs	7
cts	7
cp	1
crap	1
rs	9.8666
c	0
b	0
f	0

<?php

namespace Sphpeme\ExpHandler;


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

class NamedLetHandler implements ExpHandler
{


    /** @var Symbol */
    private $letSymbol;

    public function __construct()
    {
        $this->letSymbol = Symbol::make('let');

    }

    public function handles($program): bool
    {
        return $program[0] === $this->letSymbol &&
            $program[1] instanceof Symbol;
    }

    public function evaluate($program, Env\EnvInterface $env, Evaluator $evaluate)
    {
        // generate a lambda (eval the program *without* name)
        // use that as the value in the define
        // then call that
        list($_let, $name, $bindings) = $program;
<?php

function returnThreeValues() {
    return array('a', 'b', 'c');
}

list($a, $b, $c) = returnThreeValues();

print $a . " - " . $c;
        $body = \array_slice($program, 3);
        $lambdaExp = array_merge([Symbol::make('lambda'), array_column($bindings, 0)], $body);
        $defineExp = [Symbol::make('define'), $name, $lambdaExp];
        $evaluate($defineExp, $env);
        return $evaluate(array_merge([$name], array_column($bindings, 1)), $env);
    }
}

1		<?php
2
3		namespace Sphpeme\ExpHandler;
4
5
6		use Sphpeme\Env;
7		use Sphpeme\Evaluator;
8		use Sphpeme\Symbol;
9
10		class NamedLetHandler implements ExpHandler
11		{
12
13
14		/** @var Symbol */
15		private $letSymbol;
16
17	2	public function __construct()
18		{
19	2	$this->letSymbol = Symbol::make('let');
		0 ignored issues – show Documentation Bug introduced 2017-12-23 06:54 UTC by Report Bug Copy Issue Report It seems like `\Sphpeme\Symbol::make('let')` of type `object<self>` is incompatible with the declared type `object<Sphpeme\Symbol>` of property `$letSymbol`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
20	2	}
21
22	1	public function handles($program): bool
23		{
24	1	return $program[0] === $this->letSymbol &&
25	1	$program[1] instanceof Symbol;
26		}
27
28	1	public function evaluate($program, Env\EnvInterface $env, Evaluator $evaluate)
29		{
30		// generate a lambda (eval the program without name)
31		// use that as the value in the define
32		// then call that
33	1	list($_let, $name, $bindings) = $program;
		0 ignored issues – show Unused Code introduced 2017-12-23 06:54 UTC by Report Bug Copy Issue Report The assignment to `$_let` is unused. Consider omitting it like so `list($first,,$third)`. This checks looks for assignemnts to variables using the `list(...)` function, where not all assigned variables are subsequently used. Consider the following code example. <?php function returnThreeValues() { return array('a', 'b', 'c'); } list($a, $b, $c) = returnThreeValues(); print $a . " - " . $c; Only the variables `$a` and `$c` are used. There was no need to assign `$b`. Instead, the list call could have been. list($a,, $c) = returnThreeValues(); Loading history...
34	1	$body = \array_slice($program, 3);
35	1	$lambdaExp = array_merge([Symbol::make('lambda'), array_column($bindings, 0)], $body);
36	1	$defineExp = [Symbol::make('define'), $name, $lambdaExp];
37	1	$evaluate($defineExp, $env);
38	1	return $evaluate(array_merge([$name], array_column($bindings, 1)), $env);
39		}
40		}

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NamedLetHandler::evaluate() A last analyzed 2019-11-08 19:48 UTC

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NamedLetHandler::evaluate() A
last analyzed 2019-11-08 19:48 UTC