VariableUtils::getNextAvailableVariableName() - Code Metrics - thecodingmachine/yaco - Measure and Improve Code Quality continuously with Scrutinizer

VariableUtils::getNextAvailableVariableName() C
last analyzed 2016-03-01 17:11 UTC

↳ Parent: VariableUtils

Complexity

Conditions	7
Paths	2

Size

Total Lines	32
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
c	2
b	0
f	0
dl	0
loc	32
rs	6.7272
cc	7
eloc	20
nc	2
nop	2

<?php

namespace TheCodingMachine\Yaco\Definition;

class VariableUtils
{
    /**
     * Returns the next available variable name to use.
     *
     * @param string $variable      The variable name we wish to use
     * @param array  $usedVariables The list of variable names already used.
     *
     * @return string
     */
    public static function getNextAvailableVariableName($variable, array $usedVariables)
    {
        $variable = self::toVariableName($variable);
        while (true) {
            // check that the name is not reserved
            if (!in_array($variable, $usedVariables, true)) {
                break;
            }

            $numbers = '';
            while (true) {
                $lastCharacter = substr($variable, strlen($variable) - 1);
                if ($lastCharacter >= '0' && $lastCharacter <= '9') {
                    $numbers = $lastCharacter.$numbers;
                    $variable = substr($variable, 0, strlen($variable) - 1);
                } else {
                    break;
                }
            }

            if ($numbers === '') {
                $numbers = 0;
            } else {
                $numbers = (int) $numbers;
            }
            ++$numbers;

            $variable = $variable.$numbers;
        }

        return $variable;
    }

    /**
     * Transform $name into a valid variable name by removing not authorized characters or adding new ones.
     *
     * - foo => $foo
     * - $foo => $foo
     * - fo$o => $foo
     *
     * @param string $name
     *
     * @return string
     */
    private static function toVariableName($name)
    {
        $variableName = preg_replace('/[^A-Za-z0-9]/', '', $name);
        if ($variableName{0} >= '0' && $variableName{0} <= '9') {
            $variableName = 'a'.$variableName;
        }

        return '$'.$variableName;
    }
}


1			<?php
2
3			namespace TheCodingMachine\Yaco\Definition;
4
5			class VariableUtils
6			{
7			/**
8			* Returns the next available variable name to use.
9			*
10			* @param string $variable The variable name we wish to use
11			* @param array $usedVariables The list of variable names already used.
12			*
13			* @return string
14			*/
15			public static function getNextAvailableVariableName($variable, array $usedVariables)
16			{
17			$variable = self::toVariableName($variable);
18			while (true) {
19			// check that the name is not reserved
20			if (!in_array($variable, $usedVariables, true)) {
21			break;
22			}
23
24			$numbers = '';
25			while (true) {
26			$lastCharacter = substr($variable, strlen($variable) - 1);
27			if ($lastCharacter >= '0' && $lastCharacter <= '9') {
28			$numbers = $lastCharacter.$numbers;
29			$variable = substr($variable, 0, strlen($variable) - 1);
30			} else {
31			break;
32			}
33			}
34
35			if ($numbers === '') {
36			$numbers = 0;
37			} else {
38			$numbers = (int) $numbers;
39			}
40			++$numbers;
41
42			$variable = $variable.$numbers;
43			}
44
45			return $variable;
46			}
47
48			/**
49			* Transform $name into a valid variable name by removing not authorized characters or adding new ones.
50			*
51			* - foo => $foo
52			* - $foo => $foo
53			* - fo$o => $foo
54			*
55			* @param string $name
56			*
57			* @return string
58			*/
59			private static function toVariableName($name)
60			{
61			$variableName = preg_replace('/[^A-Za-z0-9]/', '', $name);
62			if ($variableName{0} >= '0' && $variableName{0} <= '9') {
63			$variableName = 'a'.$variableName;
64			}
65
66			return '$'.$variableName;
67			}
68			}
69

thecodingmachine / yaco

VariableUtils::getNextAvailableVariableName() C last analyzed 2016-03-01 17:11 UTC

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VariableUtils::getNextAvailableVariableName() C
last analyzed 2016-03-01 17:11 UTC