1 | <?php declare(strict_types=1); |
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2 | |||
3 | namespace Stratadox\Parser\Parsers; |
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4 | |||
5 | use Stratadox\Parser\Parser; |
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6 | use Stratadox\Parser\Result; |
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7 | use Stratadox\Parser\Results\Error; |
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8 | use Stratadox\Parser\Results\Ok; |
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9 | use function array_slice; |
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10 | use function count; |
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11 | use function end; |
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12 | use function preg_match; |
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13 | use function sprintf; |
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14 | use function str_contains; |
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15 | |||
16 | /** |
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17 | * Pattern |
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18 | * |
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19 | * Parses the (first match of the) given regular expression. |
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20 | * Regex delimiters ("/") are not used. |
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21 | * Accepts an optional modifier as optional second parameter. |
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22 | */ |
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23 | final class Pattern extends Parser |
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24 | { |
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25 | public function __construct(private string $pattern) {} |
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26 | |||
27 | public static function match(string $pattern, string $modifier = ''): Parser |
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28 | { |
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29 | return new self(sprintf( |
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30 | '/^%s([\s\S]*)/%s', |
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31 | str_contains($pattern, '(') ? $pattern : "($pattern)", |
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32 | $modifier, |
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33 | )); |
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34 | } |
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35 | |||
36 | public function parse(string $input): Result |
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37 | { |
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38 | if (preg_match($this->pattern, $input, $match)) { |
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39 | return Ok::with( |
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40 | count($match) > 3 ? array_slice($match, 1, -1) : $match[1], |
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41 | end($match) |
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42 | ); |
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43 | } |
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44 | return Error::in($input); |
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45 | } |
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46 | } |
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47 |
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: