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phpunit-throwable-asserts/src/CallableProxy.php at master · PhrozenByte/phpunit-throwable-asserts · GitHub
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CallableProxy.php
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CallableProxy.php
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<?php
/**
* PHPUnitThrowableAssertions - Throwable-related PHPUnit assertions.
*
* @copyright Copyright (c) 2021, Daniel Rudolf (<https://www.daniel-rudolf.de>)
*
* This file is copyrighted by the contributors recorded in the version control
* history of the file, available from the following original location:
*
* <https://github.com/PhrozenByte/phpunit-throwable-asserts/blob/master/src/CallableProxy.php>
*
* @license http://opensource.org/licenses/MIT The MIT License
*
* SPDX-License-Identifier: MIT
* License-Filename: LICENSE
*/
declare
(strict_types=
1
);
namespace
PhrozenByte
\
PHPUnitThrowableAsserts
;
use
Closure
;
use
PHPUnit
\
Framework
\
SelfDescribing
;
use
ReflectionException
;
use
ReflectionFunction
;
/**
* A simple proxy class for Callables.
*
* This is a helper class to invoke a Callable using a given set of arguments.
* CallableProxy's advantage over an anonymous function is the fact, that it
* can describe itself and doesn't just end up being called `{closure}()`.
*/
class
CallableProxy
implements
SelfDescribing
{
/** @var callable */
protected
$
callable
;
/** @var mixed[] */
protected
$
arguments
;
/**
* CallableProxy constructor.
*
* @param callable $callable the Callable to invoke
* @param mixed ...$arguments the arguments to pass to the Callable
*/
public
function
__construct
(
callable
$
callable
, ...
$
arguments
)
{
$
this
->
callable
=
$
callable
;
$
this
->
arguments
=
$
arguments
;
}
/**
* Invokes the Callable with the given arguments.
*
* @return mixed
*/
public
function
__invoke
()
{
$
callable
=
$
this
->
callable
;
return
$
callable
(...
$
this
->
arguments
);
}
/**
* Returns a human-readable string representation of the Callable.
*
* All strings match the format `<function>()` or `<class>::<function>()`.
* `{closure}` as function name describes a anonymous function, optionally
* also indicating the Closure's scope as class. If a Callable's function
* name is unknown, `{callable}` is returned.
*
* @return string string representation of the Callable
*/
public
function
toString
():
string
{
if
(
is_string
(
$
this
->
callable
)) {
return
sprintf
(
'
%s()
'
,
$
this
->
callable
);
}
if
(
is_array
(
$
this
->
callable
)) {
$
className
=
is_object
(
$
this
->
callable
[
0
]) ?
get_class
(
$
this
->
callable
[
0
]) :
$
this
->
callable
[
0
];
return
sprintf
(
'
%s::%s()
'
,
$
className
,
$
this
->
callable
[
1
]);
}
if
(
is_object
(
$
this
->
callable
)) {
if
(
$
this
->
callable
instanceof
Closure) {
try
{
$
closureReflector
=
new
ReflectionFunction
(
$
this
->
callable
);
$
closureName
=
$
closureReflector
->
getName
();
if
(
substr_compare
(
$
closureName
,
'\\
{closure}
'
, -
10
) ===
0
) {
$
closureName
=
'
{closure}
'
;
// @codeCoverageIgnoreStart
}
elseif
(
substr_compare
(
$
closureName
,
'
{closure:
'
,
0
,
9
) ===
0
) {
// TODO: PHP 8.4 adds a new closure name format matching '{closure:CLASS::METHOD:LINENO}'
// since we want to preserve BC here we unfortunately can't use that additional information
$
closureName
=
'
{closure}
'
;
// @codeCoverageIgnoreEnd
}
if
(
$
closureReflector
->
getClosureThis
() !==
null
) {
$
closureThisClassName
=
get_class
(
$
closureReflector
->
getClosureThis
());
return
sprintf
(
'
%s::%s()
'
,
$
closureThisClassName
,
$
closureName
);
}
if
(
$
closureReflector
->
getClosureScopeClass
() !==
null
) {
$
closureScopeClassName
=
$
closureReflector
->
getClosureScopeClass
()->
getName
();
return
sprintf
(
'
%s::%s()
'
,
$
closureScopeClassName
,
$
closureName
);
}
return
sprintf
(
'
%s()
'
,
$
closureName
);
// @codeCoverageIgnoreStart
}
catch
(
ReflectionException
$
e
) {
// ReflectionException is never thrown, the Callable typehint ensures a valid function
return
'
{closure}()
'
;
// @codeCoverageIgnoreEnd
}
}
if
(
$
this
->
callable
instanceof
self) {
return
$
this
->
callable
->
toString
();
}
return
sprintf
(
'
%s::__invoke()
'
,
get_class
(
$
this
->
callable
));
}
// fallback to '{callable}()' if all else fails
// this is for future PHP versions implementing new ways to describe Callables
return
'
{callable}()
'
;
// @codeCoverageIgnore
}
}
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