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

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

↳ Parent: LetStarHandler

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
nc	1
nop	3
dl	0
loc	4
ccs	2
cts	2
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php

namespace Sphpeme\ExpHandler;


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

class LetStarHandler implements ExpHandler
{


    private $letStarSymbol;
    private $letSymbol;

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

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

    public function generateLet($program)
    {
        // bindings is an array of pairs: [[param, value], [param, value]]
        list($_letStar, $bindings) = $program;
<?php

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

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

print $a . " - " . $c;
        $body = \array_slice($program, 2);

        if (\count($bindings) > 1) {
            return [$this->letSymbol, [$bindings[0]],
                $this->generateLet(array_merge(
                    [$this->letStarSymbol, \array_slice($bindings, 1)],
                        $body))];
        }

        return array_merge(
            [$this->letSymbol, [$bindings[0]]],
            $body); // unpack the body of let into the lambda exp

    }

    public function evaluate($program, Env\EnvInterface $env, Evaluator $evaluate)
    {
        return $evaluate($this->generateLet($program), $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 LetStarHandler implements ExpHandler
11		{
12
13
14		private $letStarSymbol;
15		private $letSymbol;
16
17	2	public function __construct()
18		{
19	2	$this->letStarSymbol = Symbol::make('let*');
20	2	$this->letSymbol = Symbol::make('let');
21	2	}
22
23	1	public function handles($program): bool
24		{
25	1	return $program[0] === $this->letStarSymbol;
26		}
27
28	1	public function generateLet($program)
29		{
30		// bindings is an array of pairs: [[param, value], [param, value]]
31	1	list($_letStar, $bindings) = $program;
		0 ignored issues – show Unused Code introduced 2017-12-23 06:54 UTC by Report Bug Copy Issue Report The assignment to `$_letStar` 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...
32	1	$body = \array_slice($program, 2);
33
34	1	if (\count($bindings) > 1) {
35	1	return [$this->letSymbol, [$bindings[0]],
36	1	$this->generateLet(array_merge(
37	1	[$this->letStarSymbol, \array_slice($bindings, 1)],
38	1	$body))];
39		}
40
41	1	return array_merge(
42	1	[$this->letSymbol, [$bindings[0]]],
43	1	$body); // unpack the body of let into the lambda exp
44
45		}
46
47	1	public function evaluate($program, Env\EnvInterface $env, Evaluator $evaluate)
48		{
49	1	return $evaluate($this->generateLet($program), $env);
50		}
51		}

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

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