YieldOp - Code Metrics - ovr/phpsa - Measure and Improve Code Quality continuously with Scrutinizer

YieldOp A
last analyzed 2019-02-27 06:44 UTC

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Complexity

Total Complexity

Size/Duplication

Total Lines	20
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Test Coverage

Coverage

Importance

Changes

Metric	Value
dl	0
loc	20
ccs	0
cts	4
cp	0
rs	10
c	0
b	0
f	0
wmc	1
lcom	1
cbo	5

1 Method

Rating	Name	Duplication	Size	Complexity
A	compile()	0	8	1

<?php

namespace PHPSA\Compiler\Expression;

use PHPSA\CompiledExpression;
use PHPSA\Context;
use PHPSA\Compiler\Expression;
use PHPSA\Compiler\Expression\AbstractExpressionCompiler;

class YieldOp extends AbstractExpressionCompiler
{
    protected $name = 'PhpParser\Node\Expr\Yield_';

    /**
     * yield {value}, yield {key} => {value}
     *
     * @param \PhpParser\Node\Expr\Yield_ $expr
     * @param Context $context
     * @return CompiledExpression
     */
    protected function compile($expr, Context $context)
    {
        $key = $context->getExpressionCompiler()->compile($expr->key);
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
        $value = $context->getExpressionCompiler()->compile($expr->value);
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}

        // @TODO implement yield
        return new CompiledExpression();
    }
}


1			<?php
2
3			namespace PHPSA\Compiler\Expression;
4
5			use PHPSA\CompiledExpression;
6			use PHPSA\Context;
7			use PHPSA\Compiler\Expression;
8			use PHPSA\Compiler\Expression\AbstractExpressionCompiler;
9
10			class YieldOp extends AbstractExpressionCompiler
11			{
12			protected $name = 'PhpParser\Node\Expr\Yield_';
13
14			/**
15			* yield {value}, yield {key} => {value}
16			*
17			* @param \PhpParser\Node\Expr\Yield_ $expr
18			* @param Context $context
19			* @return CompiledExpression
20			*/
21			protected function compile($expr, Context $context)
22			{
23			$key = $context->getExpressionCompiler()->compile($expr->key);
			0 ignored issues – show Bug introduced 2016-10-07 18:20 UTC by Report Bug Copy Issue Report It seems like `$expr->key` can be `null`; however, `compile()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history... Unused Code introduced 2016-10-07 18:20 UTC by Report Bug Copy Issue Report `$key` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
24			$value = $context->getExpressionCompiler()->compile($expr->value);
			0 ignored issues – show Bug introduced 2016-10-07 18:20 UTC by Report Bug Copy Issue Report It seems like `$expr->value` can be `null`; however, `compile()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history... Unused Code introduced 2016-10-07 18:20 UTC by Report Bug Copy Issue Report `$value` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
25
26			// @TODO implement yield
27			return new CompiledExpression();
28			}
29			}
30

ovr / phpsa

YieldOp A last analyzed 2019-02-27 06:44 UTC

Complexity

Size/Duplication

Coupling/Cohesion

Test Coverage

Importance

1 Method

Duplication Side-by-Side

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YieldOp A
last analyzed 2019-02-27 06:44 UTC