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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Metadata\Annotation\Parser;
use function array_filter;
use function array_map;
use function array_merge;
use function array_values;
use function count;
use function preg_match;
use function preg_match_all;
use function preg_replace;
use function preg_split;
use function realpath;
use function substr;
use function trim;
use PharIo\Version\Exception as PharIoVersionException;
use PharIo\Version\VersionConstraintParser;
use PHPUnit\Metadata\AnnotationsAreNotSupportedForInternalClassesException;
use PHPUnit\Metadata\InvalidVersionRequirementException;
use ReflectionClass;
use ReflectionFunctionAbstract;
use ReflectionMethod;
/**
* This is an abstraction around a PHPUnit-specific docBlock,
* allowing us to ask meaningful questions about a specific
* reflection symbol.
*
* @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
*
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
final class DocBlock
{
private const REGEX_REQUIRES_VERSION = '/@requires\s+(?P<name>PHP(?:Unit)?)\s+(?P<operator>[<>=!]{0,2})\s*(?P<version>[\d\.-]+(dev|(RC|alpha|beta)[\d\.])?)[ \t]*\r?$/m';
private const REGEX_REQUIRES_VERSION_CONSTRAINT = '/@requires\s+(?P<name>PHP(?:Unit)?)\s+(?P<constraint>[\d\t \-.|~^]+)[ \t]*\r?$/m';
private const REGEX_REQUIRES_OS = '/@requires\s+(?P<name>OS(?:FAMILY)?)\s+(?P<value>.+?)[ \t]*\r?$/m';
private const REGEX_REQUIRES_SETTING = '/@requires\s+(?P<name>setting)\s+(?P<setting>([^ ]+?))\s*(?P<value>[\w\.-]+[\w\.]?)?[ \t]*\r?$/m';
private const REGEX_REQUIRES = '/@requires\s+(?P<name>function|extension)\s+(?P<value>([^\s<>=!]+))\s*(?P<operator>[<>=!]{0,2})\s*(?P<version>[\d\.-]+[\d\.]?)?[ \t]*\r?$/m';
private readonly string $docComment;
/**
* @psalm-var array<string, array<int, string>> pre-parsed annotations indexed by name and occurrence index
*/
private readonly array $symbolAnnotations;
/**
* @psalm-var null|(array{
* __OFFSET: array<string, int>&array{__FILE: string},
* setting?: array<string, string>,
* extension_versions?: array<string, array{version: string, operator: string}>
* }&array<
* string,
* string|array{version: string, operator: string}|array{constraint: string}|array<int|string, string>
* >)
*/
private ?array $parsedRequirements = null;
private readonly int $startLine;
private readonly string $fileName;
/**
* @throws AnnotationsAreNotSupportedForInternalClassesException
*/
public static function ofClass(ReflectionClass $class): self
{
if ($class->isInternal()) {
throw new AnnotationsAreNotSupportedForInternalClassesException($class->getName());
}
return new self(
(string) $class->getDocComment(),
self::extractAnnotationsFromReflector($class),
$class->getStartLine(),
$class->getFileName(),
);
}
/**
* @throws AnnotationsAreNotSupportedForInternalClassesException
*/
public static function ofMethod(ReflectionMethod $method): self
{
if ($method->getDeclaringClass()->isInternal()) {
throw new AnnotationsAreNotSupportedForInternalClassesException($method->getDeclaringClass()->getName());
}
return new self(
(string) $method->getDocComment(),
self::extractAnnotationsFromReflector($method),
$method->getStartLine(),
$method->getFileName(),
);
}
/**
* Note: we do not preserve an instance of the reflection object, since it cannot be safely (de-)serialized.
*
* @param array<string, array<int, string>> $symbolAnnotations
*/
private function __construct(string $docComment, array $symbolAnnotations, int $startLine, string $fileName)
{
$this->docComment = $docComment;
$this->symbolAnnotations = $symbolAnnotations;
$this->startLine = $startLine;
$this->fileName = $fileName;
}
/**
* @psalm-return array{
* __OFFSET: array<string, int>&array{__FILE: string},
* setting?: array<string, string>,
* extension_versions?: array<string, array{version: string, operator: string}>
* }&array<
* string,
* string|array{version: string, operator: string}|array{constraint: string}|array<int|string, string>
* >
*
* @throws InvalidVersionRequirementException
*/
public function requirements(): array
{
if ($this->parsedRequirements !== null) {
return $this->parsedRequirements;
}
$offset = $this->startLine;
$requires = [];
$recordedSettings = [];
$extensionVersions = [];
$recordedOffsets = [
'__FILE' => realpath($this->fileName),
];
// Trim docblock markers, split it into lines and rewind offset to start of docblock
$lines = preg_replace(['#^/\*{2}#', '#\*/$#'], '', preg_split('/\r\n|\r|\n/', $this->docComment));
$offset -= count($lines);
foreach ($lines as $line) {
if (preg_match(self::REGEX_REQUIRES_OS, $line, $matches)) {
$requires[$matches['name']] = $matches['value'];
$recordedOffsets[$matches['name']] = $offset;
}
if (preg_match(self::REGEX_REQUIRES_VERSION, $line, $matches)) {
$requires[$matches['name']] = [
'version' => $matches['version'],
'operator' => $matches['operator'],
];
$recordedOffsets[$matches['name']] = $offset;
}
if (preg_match(self::REGEX_REQUIRES_VERSION_CONSTRAINT, $line, $matches)) {
if (!empty($requires[$matches['name']])) {
$offset++;
continue;
}
try {
$versionConstraintParser = new VersionConstraintParser;
$requires[$matches['name'] . '_constraint'] = [
'constraint' => $versionConstraintParser->parse(trim($matches['constraint'])),
];
$recordedOffsets[$matches['name'] . '_constraint'] = $offset;
} catch (PharIoVersionException $e) {
throw new InvalidVersionRequirementException(
$e->getMessage(),
$e->getCode(),
$e,
);
}
}
if (preg_match(self::REGEX_REQUIRES_SETTING, $line, $matches)) {
$recordedSettings[$matches['setting']] = $matches['value'];
$recordedOffsets['__SETTING_' . $matches['setting']] = $offset;
}
if (preg_match(self::REGEX_REQUIRES, $line, $matches)) {
$name = $matches['name'] . 's';
if (!isset($requires[$name])) {
$requires[$name] = [];
}
$requires[$name][] = $matches['value'];
$recordedOffsets[$matches['name'] . '_' . $matches['value']] = $offset;
if ($name === 'extensions' && !empty($matches['version'])) {
$extensionVersions[$matches['value']] = [
'version' => $matches['version'],
'operator' => $matches['operator'],
];
}
}
$offset++;
}
return $this->parsedRequirements = array_merge(
$requires,
['__OFFSET' => $recordedOffsets],
array_filter(
[
'setting' => $recordedSettings,
'extension_versions' => $extensionVersions,
],
),
);
}
public function symbolAnnotations(): array
{
return $this->symbolAnnotations;
}
/**
* @psalm-return array<string, array<int, string>>
*/
private static function parseDocBlock(string $docBlock): array
{
// Strip away the docblock header and footer to ease parsing of one line annotations
$docBlock = substr($docBlock, 3, -2);
$annotations = [];
if (preg_match_all('/@(?P<name>[A-Za-z_-]+)(?:[ \t]+(?P<value>.*?))?[ \t]*\r?$/m', $docBlock, $matches)) {
$numMatches = count($matches[0]);
for ($i = 0; $i < $numMatches; $i++) {
$annotations[$matches['name'][$i]][] = $matches['value'][$i];
}
}
return $annotations;
}
private static function extractAnnotationsFromReflector(ReflectionClass|ReflectionFunctionAbstract $reflector): array
{
$annotations = [];
if ($reflector instanceof ReflectionClass) {
$annotations = array_merge(
$annotations,
...array_map(
static fn (ReflectionClass $trait): array => self::parseDocBlock((string) $trait->getDocComment()),
array_values($reflector->getTraits()),
),
);
}
return array_merge(
$annotations,
self::parseDocBlock((string) $reflector->getDocComment()),
);
}
}
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