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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\Util\Annotation;
use const JSON_ERROR_NONE;
use const PREG_OFFSET_CAPTURE;
use function array_filter;
use function array_key_exists;
use function array_map;
use function array_merge;
use function array_pop;
use function array_slice;
use function array_values;
use function count;
use function explode;
use function file;
use function implode;
use function is_array;
use function is_int;
use function json_decode;
use function json_last_error;
use function json_last_error_msg;
use function preg_match;
use function preg_match_all;
use function preg_replace;
use function preg_split;
use function realpath;
use function rtrim;
use function sprintf;
use function str_replace;
use function strlen;
use function strpos;
use function strtolower;
use function substr;
use function trim;
use PharIo\Version\VersionConstraintParser;
use PHPUnit\Framework\InvalidDataProviderException;
use PHPUnit\Framework\SkippedTestError;
use PHPUnit\Framework\Warning;
use PHPUnit\Util\Exception;
use PHPUnit\Util\InvalidDataSetException;
use ReflectionClass;
use ReflectionException;
use ReflectionFunctionAbstract;
use ReflectionMethod;
use Reflector;
use Traversable;
/**
* This is an abstraction around a PHPUnit-specific docBlock,
* allowing us to ask meaningful questions about a specific
* reflection symbol.
*
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
final class DocBlock
{
/**
* @todo This constant should be private (it's public because of TestTest::testGetProvidedDataRegEx)
*/
public const REGEX_DATA_PROVIDER = '/@dataProvider\s+([a-zA-Z0-9._:-\\\\x7f-\xff]+)/';
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 const REGEX_TEST_WITH = '/@testWith\s+/';
/** @var string */
private $docComment;
/** @var bool */
private $isMethod;
/** @var array<string, array<int, string>> pre-parsed annotations indexed by name and occurrence index */
private $symbolAnnotations;
/**
* @var null|array<string, mixed>
*
* @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 $parsedRequirements;
/** @var int */
private $startLine;
/** @var int */
private $endLine;
/** @var string */
private $fileName;
/** @var string */
private $name;
/**
* @var string
*
* @psalm-var class-string
*/
private $className;
public static function ofClass(ReflectionClass $class): self
{
$className = $class->getName();
return new self(
(string) $class->getDocComment(),
false,
self::extractAnnotationsFromReflector($class),
$class->getStartLine(),
$class->getEndLine(),
$class->getFileName(),
$className,
$className
);
}
/**
* @psalm-param class-string $classNameInHierarchy
*/
public static function ofMethod(ReflectionMethod $method, string $classNameInHierarchy): self
{
return new self(
(string) $method->getDocComment(),
true,
self::extractAnnotationsFromReflector($method),
$method->getStartLine(),
$method->getEndLine(),
$method->getFileName(),
$method->getName(),
$classNameInHierarchy
);
}
/**
* 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
*
* @psalm-param class-string $className
*/
private function __construct(string $docComment, bool $isMethod, array $symbolAnnotations, int $startLine, int $endLine, string $fileName, string $name, string $className)
{
$this->docComment = $docComment;
$this->isMethod = $isMethod;
$this->symbolAnnotations = $symbolAnnotations;
$this->startLine = $startLine;
$this->endLine = $endLine;
$this->fileName = $fileName;
$this->name = $name;
$this->className = $className;
}
/**
* @psalm-return array{
* __OFFSET: array<string, int>&array{__FILE: string},
* setting?: array<string, string>,
* extension_versions?: array<string, array{version: string, operator: string}>
* }&array<
* string,
* string|array{version: string, operator: string}|array{constraint: string}|array<int|string, string>
* >
*
* @throws Warning if the requirements version constraint is not well-formed
*/
public function requirements(): array
{
if ($this->parsedRequirements !== null) {
return $this->parsedRequirements;
}
$offset = $this->startLine;
$requires = [];
$recordedSettings = [];
$extensionVersions = [];
$recordedOffsets = [
'__FILE' => realpath($this->fileName),
];
// Split docblock into lines and rewind offset to start of docblock
$lines = 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 (\PharIo\Version\Exception $e) {
throw new Warning($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,
])
);
}
/**
* Returns the provided data for a method.
*
* @throws Exception
*/
public function getProvidedData(): ?array
{
/** @noinspection SuspiciousBinaryOperationInspection */
$data = $this->getDataFromDataProviderAnnotation($this->docComment) ?? $this->getDataFromTestWithAnnotation($this->docComment);
if ($data === null) {
return null;
}
if ($data === []) {
throw new SkippedTestError;
}
foreach ($data as $key => $value) {
if (!is_array($value)) {
throw new InvalidDataSetException(
sprintf(
'Data set %s is invalid.',
is_int($key) ? '#' . $key : '"' . $key . '"'
)
);
}
}
return $data;
}
/**
* @psalm-return array<string, array{line: int, value: string}>
*/
public function getInlineAnnotations(): array
{
$code = file($this->fileName);
$lineNumber = $this->startLine;
$startLine = $this->startLine - 1;
$endLine = $this->endLine - 1;
$codeLines = array_slice($code, $startLine, $endLine - $startLine + 1);
$annotations = [];
foreach ($codeLines as $line) {
if (preg_match('#/\*\*?\s*@(?P<name>[A-Za-z_-]+)(?:[ \t]+(?P<value>.*?))?[ \t]*\r?\*/$#m', $line, $matches)) {
$annotations[strtolower($matches['name'])] = [
'line' => $lineNumber,
'value' => $matches['value'],
];
}
$lineNumber++;
}
return $annotations;
}
public function symbolAnnotations(): array
{
return $this->symbolAnnotations;
}
public function isHookToBeExecutedBeforeClass(): bool
{
return $this->isMethod &&
false !== strpos($this->docComment, '@beforeClass');
}
public function isHookToBeExecutedAfterClass(): bool
{
return $this->isMethod &&
false !== strpos($this->docComment, '@afterClass');
}
public function isToBeExecutedBeforeTest(): bool
{
return 1 === preg_match('/@before\b/', $this->docComment);
}
public function isToBeExecutedAfterTest(): bool
{
return 1 === preg_match('/@after\b/', $this->docComment);
}
public function isToBeExecutedAsPreCondition(): bool
{
return 1 === preg_match('/@preCondition\b/', $this->docComment);
}
public function isToBeExecutedAsPostCondition(): bool
{
return 1 === preg_match('/@postCondition\b/', $this->docComment);
}
private function getDataFromDataProviderAnnotation(string $docComment): ?array
{
$methodName = null;
$className = $this->className;
if ($this->isMethod) {
$methodName = $this->name;
}
if (!preg_match_all(self::REGEX_DATA_PROVIDER, $docComment, $matches)) {
return null;
}
$result = [];
foreach ($matches[1] as $match) {
$dataProviderMethodNameNamespace = explode('\\', $match);
$leaf = explode('::', array_pop($dataProviderMethodNameNamespace));
$dataProviderMethodName = array_pop($leaf);
if (empty($dataProviderMethodNameNamespace)) {
$dataProviderMethodNameNamespace = '';
} else {
$dataProviderMethodNameNamespace = implode('\\', $dataProviderMethodNameNamespace) . '\\';
}
if (empty($leaf)) {
$dataProviderClassName = $className;
} else {
/** @psalm-var class-string $dataProviderClassName */
$dataProviderClassName = $dataProviderMethodNameNamespace . array_pop($leaf);
}
try {
$dataProviderClass = new ReflectionClass($dataProviderClassName);
$dataProviderMethod = $dataProviderClass->getMethod(
$dataProviderMethodName
);
// @codeCoverageIgnoreStart
} catch (ReflectionException $e) {
throw new Exception(
$e->getMessage(),
(int) $e->getCode(),
$e
);
// @codeCoverageIgnoreEnd
}
if ($dataProviderMethod->isStatic()) {
$object = null;
} else {
$object = $dataProviderClass->newInstance();
}
if ($dataProviderMethod->getNumberOfParameters() === 0) {
$data = $dataProviderMethod->invoke($object);
} else {
$data = $dataProviderMethod->invoke($object, $methodName);
}
if ($data instanceof Traversable) {
$origData = $data;
$data = [];
foreach ($origData as $key => $value) {
if (is_int($key)) {
$data[] = $value;
} elseif (array_key_exists($key, $data)) {
throw new InvalidDataProviderException(
sprintf(
'The key "%s" has already been defined in the data provider "%s".',
$key,
$match
)
);
} else {
$data[$key] = $value;
}
}
}
if (is_array($data)) {
$result = array_merge($result, $data);
}
}
return $result;
}
/**
* @throws Exception
*/
private function getDataFromTestWithAnnotation(string $docComment): ?array
{
$docComment = $this->cleanUpMultiLineAnnotation($docComment);
if (!preg_match(self::REGEX_TEST_WITH, $docComment, $matches, PREG_OFFSET_CAPTURE)) {
return null;
}
$offset = strlen($matches[0][0]) + $matches[0][1];
$annotationContent = substr($docComment, $offset);
$data = [];
foreach (explode("\n", $annotationContent) as $candidateRow) {
$candidateRow = trim($candidateRow);
if ($candidateRow[0] !== '[') {
break;
}
$dataSet = json_decode($candidateRow, true);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new Exception(
'The data set for the @testWith annotation cannot be parsed: ' . json_last_error_msg()
);
}
$data[] = $dataSet;
}
if (!$data) {
throw new Exception('The data set for the @testWith annotation cannot be parsed.');
}
return $data;
}
private function cleanUpMultiLineAnnotation(string $docComment): string
{
//removing initial ' * ' for docComment
$docComment = str_replace("\r\n", "\n", $docComment);
$docComment = preg_replace('/' . '\n' . '\s*' . '\*' . '\s?' . '/', "\n", $docComment);
$docComment = (string) substr($docComment, 0, -1);
return rtrim($docComment, "\n");
}
/** @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
$docBlock = (string) substr($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]][] = (string) $matches['value'][$i];
}
}
return $annotations;
}
/** @param ReflectionClass|ReflectionFunctionAbstract $reflector */
private static function extractAnnotationsFromReflector(Reflector $reflector): array
{
$annotations = [];
if ($reflector instanceof ReflectionClass) {
$annotations = array_merge(
$annotations,
...array_map(
static function (ReflectionClass $trait): array {
return self::parseDocBlock((string) $trait->getDocComment());
},
array_values($reflector->getTraits())
)
);
}
return array_merge(
$annotations,
self::parseDocBlock((string) $reflector->getDocComment())
);
}
}