Matcher::parse() - Code Metrics - Inspection of "constant matcher" - functional-php/pattern-matching - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 6a9997...b22946 )

by Gilles

created 2016-10-24 08:37 UTC

Matcher::parse() B

↳ Parent: Matcher

Complexity

Conditions	8
Paths	5

Size

Total Lines	21
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	21
rs	7.1428
c	0
b	0
f	0
cc	8
eloc	11
nc	5
nop	2

<?php

namespace PHPFunctional\PatternMatching;

class Matcher
{
    private static $booleans = "/^(true|false)$/i";
<?php

$singleQuoted = 'Value';
$doubleQuoted = "\tSingle is $singleQuoted";

print $doubleQuoted;
    private static $strings = "/^(['\"])(?:(?!\\1).)*\\1$/";

    /**
     * @param mixed $value
     * @param string $pattern
     * @return bool|array
     */
    private static function parse($value, $pattern)
    {
        $pattern = trim($pattern);


        if(is_numeric($pattern) && is_numeric($value)) {
            return [];
        }

        if(preg_match(self::$booleans, $pattern) === 1 && is_bool($value)) {
            return [];
        }

        if(preg_match(self::$strings, $pattern) === 1 && is_string($value)) {
            $string_pattern = substr($pattern, 1, strlen($pattern) - 2);
            if($string_pattern == $value) {
                return [];
            }
        }

        return false;
    }

    /**
     * @param mixed $value
     * @param array $patterns
     * @return mixed
     */
    public static function match($value, array $patterns)
    {
        foreach($patterns as $pattern => $callback) {
            $match = self::parse($value, $pattern);

            if($match !== false) {
                return call_user_func_array($callback, $match);
            }
        }

        throw new \RuntimeException("Non-exhaustive patterns.");
<?php

$singleQuoted = 'Value';
$doubleQuoted = "\tSingle is $singleQuoted";

print $doubleQuoted;
    }
}

1			<?php
2
3			namespace PHPFunctional\PatternMatching;
4
5			class Matcher
6			{
7			private static $booleans = "/^(true\|false)$/i";
			0 ignored issues – show Coding Style Comprehensibility introduced 2016-10-24 08:44 UTC by Report Bug Copy Issue Report The string literal `/^(true\|false)$/i` does not require double quotes, as per coding-style, please use single quotes. PHP provides two ways to mark string literals. Either with single quotes `'literal'` or with double quotes `"literal"`. The difference between these is that string literals in double quotes may contain variables with are evaluated at run-time as well as escape sequences. String literals in single quotes on the other hand are evaluated very literally and the only two characters that needs escaping in the literal are the single quote itself (`\'`) and the backslash (`\\`). Every other character is displayed as is. Double quoted string literals may contain other variables or more complex escape sequences. <?php $singleQuoted = 'Value'; $doubleQuoted = "\tSingle is $singleQuoted"; print $doubleQuoted; will print an indented: `Single is Value` If your string literal does not contain variables or escape sequences, it should be defined using single quotes to make that fact clear. For more information on PHP string literals and available escape sequences see the PHP core documentation. Loading history...
8			private static $strings = "/^(['\"])(?:(?!\\1).)*\\1$/";
9
10			/**
11			* @param mixed $value
12			* @param string $pattern
13			* @return bool\|array
14			*/
15			private static function parse($value, $pattern)
16			{
17			$pattern = trim($pattern);
			1 ignored issue – show Coding Style introduced 2016-10-24 08:44 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$pattern`. This often makes code more readable. Loading history...
18
19			if(is_numeric($pattern) && is_numeric($value)) {
20			return [];
21			}
22
23			if(preg_match(self::$booleans, $pattern) === 1 && is_bool($value)) {
24			return [];
25			}
26
27			if(preg_match(self::$strings, $pattern) === 1 && is_string($value)) {
28			$string_pattern = substr($pattern, 1, strlen($pattern) - 2);
29			if($string_pattern == $value) {
30			return [];
31			}
32			}
33
34			return false;
35			}
36
37			/**
38			* @param mixed $value
39			* @param array $patterns
40			* @return mixed
41			*/
42			public static function match($value, array $patterns)
43			{
44			foreach($patterns as $pattern => $callback) {
45			$match = self::parse($value, $pattern);
46
47			if($match !== false) {
48			return call_user_func_array($callback, $match);
49			}
50			}
51
52			throw new \RuntimeException("Non-exhaustive patterns.");
			0 ignored issues – show Coding Style Comprehensibility introduced 2016-10-22 13:48 UTC by Report Bug Copy Issue Report The string literal `Non-exhaustive patterns.` does not require double quotes, as per coding-style, please use single quotes. PHP provides two ways to mark string literals. Either with single quotes `'literal'` or with double quotes `"literal"`. The difference between these is that string literals in double quotes may contain variables with are evaluated at run-time as well as escape sequences. String literals in single quotes on the other hand are evaluated very literally and the only two characters that needs escaping in the literal are the single quote itself (`\'`) and the backslash (`\\`). Every other character is displayed as is. Double quoted string literals may contain other variables or more complex escape sequences. <?php $singleQuoted = 'Value'; $doubleQuoted = "\tSingle is $singleQuoted"; print $doubleQuoted; will print an indented: `Single is Value` If your string literal does not contain variables or escape sequences, it should be defined using single quotes to make that fact clear. For more information on PHP string literals and available escape sequences see the PHP core documentation. Loading history...
53			}
54			}

functional-php / pattern-matching

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Matcher::parse() B

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