diff options
author | Andrew Dolgov <[email protected]> | 2022-03-22 12:24:31 +0300 |
---|---|---|
committer | Andrew Dolgov <[email protected]> | 2022-03-22 12:24:31 +0300 |
commit | 1c4f7ab3b838b23afb2ee4dab14acbf75956e952 (patch) | |
tree | 0a19274107d717efe92d2c0376cd3105fead5a11 /vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php | |
parent | 711662948768492e8d05b778a7d80eacaec368d2 (diff) |
* add phpunit as a dev dependency
* add some basic tests for UrlHelper::rewrite_relative()
* fix UrlHelper::rewrite_relative() to work better on non-absolute
relative URL paths
Diffstat (limited to 'vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php')
-rw-r--r-- | vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php b/vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php new file mode 100644 index 000000000..1a519ec4a --- /dev/null +++ b/vendor/phpdocumentor/reflection-docblock/src/DocBlock/DescriptionFactory.php @@ -0,0 +1,178 @@ +<?php + +declare(strict_types=1); + +/** + * This file is part of phpDocumentor. + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + * + * @link http://phpdoc.org + */ + +namespace phpDocumentor\Reflection\DocBlock; + +use phpDocumentor\Reflection\Types\Context as TypeContext; +use phpDocumentor\Reflection\Utils; + +use function count; +use function implode; +use function ltrim; +use function min; +use function str_replace; +use function strlen; +use function strpos; +use function substr; +use function trim; + +use const PREG_SPLIT_DELIM_CAPTURE; + +/** + * Creates a new Description object given a body of text. + * + * Descriptions in phpDocumentor are somewhat complex entities as they can contain one or more tags inside their + * body that can be replaced with a readable output. The replacing is done by passing a Formatter object to the + * Description object's `render` method. + * + * In addition to the above does a Description support two types of escape sequences: + * + * 1. `{@}` to escape the `@` character to prevent it from being interpreted as part of a tag, i.e. `{{@}link}` + * 2. `{}` to escape the `}` character, this can be used if you want to use the `}` character in the description + * of an inline tag. + * + * If a body consists of multiple lines then this factory will also remove any superfluous whitespace at the beginning + * of each line while maintaining any indentation that is used. This will prevent formatting parsers from tripping + * over unexpected spaces as can be observed with tag descriptions. + */ +class DescriptionFactory +{ + /** @var TagFactory */ + private $tagFactory; + + /** + * Initializes this factory with the means to construct (inline) tags. + */ + public function __construct(TagFactory $tagFactory) + { + $this->tagFactory = $tagFactory; + } + + /** + * Returns the parsed text of this description. + */ + public function create(string $contents, ?TypeContext $context = null): Description + { + $tokens = $this->lex($contents); + $count = count($tokens); + $tagCount = 0; + $tags = []; + + for ($i = 1; $i < $count; $i += 2) { + $tags[] = $this->tagFactory->create($tokens[$i], $context); + $tokens[$i] = '%' . ++$tagCount . '$s'; + } + + //In order to allow "literal" inline tags, the otherwise invalid + //sequence "{@}" is changed to "@", and "{}" is changed to "}". + //"%" is escaped to "%%" because of vsprintf. + //See unit tests for examples. + for ($i = 0; $i < $count; $i += 2) { + $tokens[$i] = str_replace(['{@}', '{}', '%'], ['@', '}', '%%'], $tokens[$i]); + } + + return new Description(implode('', $tokens), $tags); + } + + /** + * Strips the contents from superfluous whitespace and splits the description into a series of tokens. + * + * @return string[] A series of tokens of which the description text is composed. + */ + private function lex(string $contents): array + { + $contents = $this->removeSuperfluousStartingWhitespace($contents); + + // performance optimalization; if there is no inline tag, don't bother splitting it up. + if (strpos($contents, '{@') === false) { + return [$contents]; + } + + return Utils::pregSplit( + '/\{ + # "{@}" is not a valid inline tag. This ensures that we do not treat it as one, but treat it literally. + (?!@\}) + # We want to capture the whole tag line, but without the inline tag delimiters. + (\@ + # Match everything up to the next delimiter. + [^{}]* + # Nested inline tag content should not be captured, or it will appear in the result separately. + (?: + # Match nested inline tags. + (?: + # Because we did not catch the tag delimiters earlier, we must be explicit with them here. + # Notice that this also matches "{}", as a way to later introduce it as an escape sequence. + \{(?1)?\} + | + # Make sure we match hanging "{". + \{ + ) + # Match content after the nested inline tag. + [^{}]* + )* # If there are more inline tags, match them as well. We use "*" since there may not be any + # nested inline tags. + ) + \}/Sux', + $contents, + 0, + PREG_SPLIT_DELIM_CAPTURE + ); + } + + /** + * Removes the superfluous from a multi-line description. + * + * When a description has more than one line then it can happen that the second and subsequent lines have an + * additional indentation. This is commonly in use with tags like this: + * + * {@}since 1.1.0 This is an example + * description where we have an + * indentation in the second and + * subsequent lines. + * + * If we do not normalize the indentation then we have superfluous whitespace on the second and subsequent + * lines and this may cause rendering issues when, for example, using a Markdown converter. + */ + private function removeSuperfluousStartingWhitespace(string $contents): string + { + $lines = Utils::pregSplit("/\r\n?|\n/", $contents); + + // if there is only one line then we don't have lines with superfluous whitespace and + // can use the contents as-is + if (count($lines) <= 1) { + return $contents; + } + + // determine how many whitespace characters need to be stripped + $startingSpaceCount = 9999999; + for ($i = 1, $iMax = count($lines); $i < $iMax; ++$i) { + // lines with a no length do not count as they are not indented at all + if (trim($lines[$i]) === '') { + continue; + } + + // determine the number of prefixing spaces by checking the difference in line length before and after + // an ltrim + $startingSpaceCount = min($startingSpaceCount, strlen($lines[$i]) - strlen(ltrim($lines[$i]))); + } + + // strip the number of spaces from each line + if ($startingSpaceCount > 0) { + for ($i = 1, $iMax = count($lines); $i < $iMax; ++$i) { + $lines[$i] = substr($lines[$i], $startingSpaceCount); + } + } + + return implode("\n", $lines); + } +} |