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<?php declare(strict_types=1);
/*
* This file is part of sebastian/code-unit.
*
* (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 SebastianBergmann\CodeUnit;
use function range;
use function sprintf;
use ReflectionClass;
use ReflectionFunction;
use ReflectionMethod;
/**
* @psalm-immutable
*/
abstract class CodeUnit
{
/**
* @var string
*/
private $name;
/**
* @var string
*/
private $sourceFileName;
/**
* @var array
* @psalm-var list<int>
*/
private $sourceLines;
/**
* @psalm-param class-string $className
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forClass(string $className): ClassUnit
{
self::ensureUserDefinedClass($className);
$reflector = self::reflectorForClass($className);
return new ClassUnit(
$className,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param class-string $className
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forClassMethod(string $className, string $methodName): ClassMethodUnit
{
self::ensureUserDefinedClass($className);
$reflector = self::reflectorForClassMethod($className, $methodName);
return new ClassMethodUnit(
$className . '::' . $methodName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param class-string $interfaceName
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forInterface(string $interfaceName): InterfaceUnit
{
self::ensureUserDefinedInterface($interfaceName);
$reflector = self::reflectorForClass($interfaceName);
return new InterfaceUnit(
$interfaceName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param class-string $interfaceName
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forInterfaceMethod(string $interfaceName, string $methodName): InterfaceMethodUnit
{
self::ensureUserDefinedInterface($interfaceName);
$reflector = self::reflectorForClassMethod($interfaceName, $methodName);
return new InterfaceMethodUnit(
$interfaceName . '::' . $methodName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param class-string $traitName
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forTrait(string $traitName): TraitUnit
{
self::ensureUserDefinedTrait($traitName);
$reflector = self::reflectorForClass($traitName);
return new TraitUnit(
$traitName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param class-string $traitName
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forTraitMethod(string $traitName, string $methodName): TraitMethodUnit
{
self::ensureUserDefinedTrait($traitName);
$reflector = self::reflectorForClassMethod($traitName, $methodName);
return new TraitMethodUnit(
$traitName . '::' . $methodName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param callable-string $functionName
*
* @throws InvalidCodeUnitException
* @throws ReflectionException
*/
public static function forFunction(string $functionName): FunctionUnit
{
$reflector = self::reflectorForFunction($functionName);
if (!$reflector->isUserDefined()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not a user-defined function',
$functionName
)
);
}
return new FunctionUnit(
$functionName,
$reflector->getFileName(),
range(
$reflector->getStartLine(),
$reflector->getEndLine()
)
);
}
/**
* @psalm-param list<int> $sourceLines
*/
private function __construct(string $name, string $sourceFileName, array $sourceLines)
{
$this->name = $name;
$this->sourceFileName = $sourceFileName;
$this->sourceLines = $sourceLines;
}
public function name(): string
{
return $this->name;
}
public function sourceFileName(): string
{
return $this->sourceFileName;
}
/**
* @psalm-return list<int>
*/
public function sourceLines(): array
{
return $this->sourceLines;
}
public function isClass(): bool
{
return false;
}
public function isClassMethod(): bool
{
return false;
}
public function isInterface(): bool
{
return false;
}
public function isInterfaceMethod(): bool
{
return false;
}
public function isTrait(): bool
{
return false;
}
public function isTraitMethod(): bool
{
return false;
}
public function isFunction(): bool
{
return false;
}
/**
* @psalm-param class-string $className
*
* @throws InvalidCodeUnitException
*/
private static function ensureUserDefinedClass(string $className): void
{
try {
$reflector = new ReflectionClass($className);
if ($reflector->isInterface()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is an interface and not a class',
$className
)
);
}
if ($reflector->isTrait()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is a trait and not a class',
$className
)
);
}
if (!$reflector->isUserDefined()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not a user-defined class',
$className
)
);
}
// @codeCoverageIgnoreStart
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
/**
* @psalm-param class-string $interfaceName
*
* @throws InvalidCodeUnitException
*/
private static function ensureUserDefinedInterface(string $interfaceName): void
{
try {
$reflector = new ReflectionClass($interfaceName);
if (!$reflector->isInterface()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not an interface',
$interfaceName
)
);
}
if (!$reflector->isUserDefined()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not a user-defined interface',
$interfaceName
)
);
}
// @codeCoverageIgnoreStart
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
/**
* @psalm-param class-string $traitName
*
* @throws InvalidCodeUnitException
*/
private static function ensureUserDefinedTrait(string $traitName): void
{
try {
$reflector = new ReflectionClass($traitName);
if (!$reflector->isTrait()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not a trait',
$traitName
)
);
}
// @codeCoverageIgnoreStart
if (!$reflector->isUserDefined()) {
throw new InvalidCodeUnitException(
sprintf(
'"%s" is not a user-defined trait',
$traitName
)
);
}
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
/**
* @psalm-param class-string $className
*
* @throws ReflectionException
*/
private static function reflectorForClass(string $className): ReflectionClass
{
try {
return new ReflectionClass($className);
// @codeCoverageIgnoreStart
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
/**
* @psalm-param class-string $className
*
* @throws ReflectionException
*/
private static function reflectorForClassMethod(string $className, string $methodName): ReflectionMethod
{
try {
return new ReflectionMethod($className, $methodName);
// @codeCoverageIgnoreStart
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
/**
* @psalm-param callable-string $functionName
*
* @throws ReflectionException
*/
private static function reflectorForFunction(string $functionName): ReflectionFunction
{
try {
return new ReflectionFunction($functionName);
// @codeCoverageIgnoreStart
} catch (\ReflectionException $e) {
throw new ReflectionException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
}
}
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