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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI;
use Joomla\DI\Exception\DependencyResolutionException;
use Joomla\DI\Exception\KeyNotFoundException;
use Joomla\DI\Exception\ProtectedKeyException;
use Psr\Container\ContainerInterface;
/**
* The Container class.
*
* @since 1.0
*/
class Container implements ContainerInterface
{
/**
* Holds the key aliases.
*
* Format:
* 'alias' => 'key'
*
* @var array
* @since 1.0
*/
protected $aliases = [];
/**
* Holds the resources.
*
* @var ContainerResource[]
* @since 2.0.0
*/
protected $resources = [];
/**
* Parent for hierarchical containers.
*
* In fact, this can be any PSR-11 compatible container, which gets decorated by this
*
* @var Container|ContainerInterface|null
* @since 1.0
*/
protected $parent;
/**
* Holds the service tag mapping.
*
* @var array
* @since 1.5.0
*/
protected $tags = [];
/**
* Constructor for the DI Container
*
* @param ContainerInterface|null $parent Parent for hierarchical containers.
*
* @since 1.0
*/
public function __construct(?ContainerInterface $parent = null)
{
$this->parent = $parent;
}
/**
* Retrieve a resource
*
* @param string $resourceName Name of the resource to get.
*
* @return mixed The requested resource
*
* @since 1.0
* @throws KeyNotFoundException
*/
public function get($resourceName)
{
$key = $this->resolveAlias($resourceName);
if (!isset($this->resources[$key])) {
if ($this->parent instanceof ContainerInterface && $this->parent->has($key)) {
return $this->parent->get($key);
}
throw new KeyNotFoundException(sprintf("Resource '%s' has not been registered with the container.", $resourceName));
}
return $this->resources[$key]->getInstance();
}
/**
* Check if specified resource exists.
*
* @param string $resourceName Name of the resource to check.
*
* @return boolean true if key is defined, false otherwise
*
* @since 1.5.0
*/
public function has($resourceName)
{
$key = $this->resolveAlias($resourceName);
if (!isset($this->resources[$key])) {
if ($this->parent instanceof ContainerInterface) {
return $this->parent->has($key);
}
return false;
}
return true;
}
/**
* Method to check if specified dataStore key exists.
*
* @param string $key Name of the dataStore key to check.
*
* @return boolean True for success
*
* @since 1.0
* @deprecated 3.0 Use ContainerInterface::has() instead
*/
public function exists($key)
{
trigger_deprecation(
'joomla/di',
'1.5.0',
'%s() is deprecated and will be removed in 3.0, use %s::has() instead.',
__METHOD__,
ContainerInterface::class
);
return $this->has($key);
}
/**
* Create an alias for a given key for easy access.
*
* @param string $alias The alias name
* @param string $key The key to alias
*
* @return $this
*
* @since 1.0
*/
public function alias($alias, $key)
{
$this->aliases[$alias] = $key;
return $this;
}
/**
* Resolve a resource name.
*
* If the resource name is an alias, the corresponding key is returned.
* If the resource name is not an alias, the resource name is returned unchanged.
*
* @param string $resourceName The key to search for.
*
* @return string
*
* @since 1.0
*/
protected function resolveAlias($resourceName)
{
return $this->aliases[$resourceName] ?? $resourceName;
}
/**
* Check whether a resource is shared
*
* @param string $resourceName Name of the resource to check.
*
* @return boolean
*
* @since 2.0.0
*/
public function isShared(string $resourceName): bool
{
return $this->hasFlag($resourceName, 'isShared', true);
}
/**
* Check whether a resource is protected
*
* @param string $resourceName Name of the resource to check.
*
* @return boolean
*
* @since 2.0.0
*/
public function isProtected(string $resourceName): bool
{
return $this->hasFlag($resourceName, 'isProtected', true);
}
/**
* Check whether a resource is stored locally
*
* @param string $resourceName Name of the resource to check.
*
* @return boolean
*
* @since __DEPLOY_VERSION__
*/
private function isLocal(string $resourceName): bool
{
$key = $this->resolveAlias($resourceName);
return !empty($this->resources[$key]);
}
/**
* Check whether a flag (i.e., one of 'shared' or 'protected') is set
*
* @param string $resourceName Name of the resource to check.
* @param string $method Method to delegate to
* @param boolean $default Default return value
*
* @return boolean
*
* @since 2.0.0
* @throws KeyNotFoundException
*/
private function hasFlag(string $resourceName, string $method, bool $default = true): bool
{
$key = $this->resolveAlias($resourceName);
if (isset($this->resources[$key])) {
return \call_user_func([$this->resources[$key], $method]);
}
if ($this->parent instanceof self) {
return \call_user_func([$this->parent, $method], $key);
}
if ($this->parent instanceof ContainerInterface && $this->parent->has($key)) {
// We don't know if the parent supports the 'shared' or 'protected' concept, so we assume the default
return $default;
}
throw new KeyNotFoundException(sprintf("Resource '%s' has not been registered with the container.", $resourceName));
}
/**
* Assign a tag to services.
*
* @param string $tag The tag name
* @param array $keys The service keys to tag
*
* @return $this
*
* @since 1.5.0
*/
public function tag($tag, array $keys)
{
foreach ($keys as $key) {
$resolvedKey = $this->resolveAlias($key);
if (!isset($this->tags[$tag])) {
$this->tags[$tag] = [];
}
$this->tags[$tag][] = $resolvedKey;
}
// Prune duplicates
$this->tags[$tag] = array_unique($this->tags[$tag]);
return $this;
}
/**
* Fetch all services registered to the given tag.
*
* @param string $tag The tag name
*
* @return array The resolved services for the given tag
*
* @since 1.5.0
*/
public function getTagged($tag)
{
$services = [];
if (isset($this->tags[$tag])) {
foreach ($this->tags[$tag] as $service) {
$services[] = $this->get($service);
}
}
return $services;
}
/**
* Build an object of the requested class
*
* Creates an instance of the class specified by $resourceName with all dependencies injected.
* If the dependencies cannot be completely resolved, a DependencyResolutionException is thrown.
*
* @param string $resourceName The class name to build.
* @param boolean $shared True to create a shared resource.
*
* @return object|false Instance of class specified by $resourceName with all dependencies injected.
* Returns an object if the class exists and false otherwise
*
* @since 1.0
* @throws DependencyResolutionException if the object could not be built (due to missing information)
*/
public function buildObject($resourceName, $shared = false)
{
static $buildStack = [];
$key = $this->resolveAlias($resourceName);
if (\in_array($key, $buildStack, true)) {
$buildStack = [];
throw new DependencyResolutionException(sprintf('Cannot resolve circular dependency for "%s"', $key));
}
$buildStack[] = $key;
if ($this->has($key)) {
$resource = $this->get($key);
array_pop($buildStack);
return $resource;
}
try {
$reflection = new \ReflectionClass($key);
} catch (\ReflectionException $e) {
array_pop($buildStack);
return false;
}
if (!$reflection->isInstantiable()) {
$buildStack = [];
if ($reflection->isInterface()) {
throw new DependencyResolutionException(
sprintf('There is no service for "%s" defined, cannot autowire a class service for an interface.', $key)
);
}
if ($reflection->isAbstract()) {
throw new DependencyResolutionException(
sprintf('There is no service for "%s" defined, cannot autowire an abstract class.', $key)
);
}
throw new DependencyResolutionException(sprintf('"%s" cannot be instantiated.', $key));
}
$constructor = $reflection->getConstructor();
// If there are no parameters, just return a new object.
if ($constructor === null) {
// There is no constructor, just return a new object.
$callback = function () use ($key) {
return new $key();
};
} else {
$newInstanceArgs = $this->getMethodArgs($constructor);
$callback = function () use ($reflection, $newInstanceArgs) {
return $reflection->newInstanceArgs($newInstanceArgs);
};
}
$this->set($key, $callback, $shared);
$resource = $this->get($key);
array_pop($buildStack);
return $resource;
}
/**
* Convenience method for building a shared object.
*
* @param string $resourceName The class name to build.
*
* @return object|false Instance of class specified by $resourceName with all dependencies injected.
* Returns an object if the class exists and false otherwise
*
* @since 1.0
*/
public function buildSharedObject($resourceName)
{
return $this->buildObject($resourceName, true);
}
/**
* Create a child Container with a new property scope that has the ability to access the parent scope when resolving.
*
* @return Container A new container with the current as a parent
*
* @since 1.0
*/
public function createChild()
{
return new static($this);
}
/**
* Extend a defined service Closure by wrapping the existing one with a new callable function.
*
* This works very similar to a decorator pattern. Note that this only works on service Closures
* that have been defined in the current container, not parent containers.
*
* @param string $resourceName The unique identifier for the Closure or property.
* @param callable $callable A callable to wrap the original service Closure.
*
* @return void
*
* @since 1.0
* @throws KeyNotFoundException
*/
public function extend($resourceName, callable $callable)
{
$key = $this->resolveAlias($resourceName);
$resource = $this->getResource($key, true);
$closure = function ($c) use ($callable, $resource) {
return $callable($resource->getInstance(), $c);
};
$this->set($key, $closure, $resource->isShared());
}
/**
* Build an array of method arguments.
*
* @param \ReflectionMethod $method Method for which to build the argument array.
*
* @return array Array of arguments to pass to the method.
*
* @since 1.0
* @throws DependencyResolutionException
*/
private function getMethodArgs(\ReflectionMethod $method): array
{
$methodArgs = [];
foreach ($method->getParameters() as $param) {
// Check for a typehinted dependency
if ($param->hasType()) {
$dependency = $param->getType();
// Don't support PHP 8 union types
if ($dependency instanceof \ReflectionUnionType) {
// If this is a nullable parameter, then don't error out
if ($param->allowsNull()) {
$methodArgs[] = null;
continue;
}
throw new DependencyResolutionException(
sprintf(
'Could not resolve the parameter "$%s" of "%s::%s()": Union typehints are not supported.',
$param->name,
$method->class,
$method->name
)
);
}
// Check for a class, if it doesn't have one then it is a scalar type, which we cannot handle if a mandatory argument
if ($dependency->isBuiltin()) {
// If the param is optional, then fall through to the optional param handling later in this method
if (!$param->isOptional()) {
$message = 'Could not resolve the parameter "$%s" of "%s::%s()":';
$message .= ' Scalar parameters cannot be autowired and the parameter does not have a default value.';
throw new DependencyResolutionException(
sprintf(
$message,
$param->name,
$method->class,
$method->name
)
);
}
} else {
$dependencyClassName = $dependency->getName();
// Check that class or interface exists
if (!interface_exists($dependencyClassName) && !class_exists($dependencyClassName)) {
// If this is a nullable parameter, then don't error out
if ($param->allowsNull()) {
$methodArgs[] = null;
continue;
}
throw new DependencyResolutionException(
sprintf(
'Could not resolve the parameter "$%s" of "%s::%s()": The "%s" class does not exist.',
$param->name,
$method->class,
$method->name,
$dependencyClassName
)
);
}
// If the dependency class name is registered with this container or a parent, use it.
if ($this->getResource($dependencyClassName) !== null) {
$depObject = $this->get($dependencyClassName);
} else {
try {
$depObject = $this->buildObject($dependencyClassName);
} catch (DependencyResolutionException $exception) {
// If this is a nullable parameter, then don't error out
if ($param->allowsNull()) {
$methodArgs[] = null;
continue;
}
$message = 'Could not resolve the parameter "$%s" of "%s::%s()":';
$message .= ' No service for "%s" exists and the dependency could not be autowired.';
throw new DependencyResolutionException(
sprintf(
$message,
$param->name,
$method->class,
$method->name,
$dependencyClassName
),
0,
$exception
);
}
}
if ($depObject instanceof $dependencyClassName) {
$methodArgs[] = $depObject;
continue;
}
}
}
// If there is a default parameter and it can be read, use it.
if ($param->isOptional() && $param->isDefaultValueAvailable()) {
try {
$methodArgs[] = $param->getDefaultValue();
continue;
} catch (\ReflectionException $exception) {
throw new DependencyResolutionException(
sprintf(
'Could not resolve the parameter "$%s" of "%s::%s()": Unable to read the default parameter value.',
$param->name,
$method->class,
$method->name
),
0,
$exception
);
}
}
// If an untyped variadic argument, skip it
if (!$param->hasType() && $param->isVariadic()) {
continue;
}
// At this point the argument cannot be resolved, most likely cause is an untyped required argument
throw new DependencyResolutionException(
sprintf(
'Could not resolve the parameter "$%s" of "%s::%s()": The argument is untyped and has no default value.',
$param->name,
$method->class,
$method->name
)
);
}
return $methodArgs;
}
/**
* Set a resource to the container. If the value is null the resource is removed.
*
* @param string $key Name of resources key to set.
* @param mixed $value Callable function to run or string to retrieve when requesting the specified $key.
* @param boolean $shared True to create and store a shared instance.
* @param boolean $protected True to protect this item from being overwritten. Useful for services.
*
* @return $this
*
* @since 1.0
* @throws ProtectedKeyException Thrown if the provided key is already set and is protected.
*/
public function set($key, $value, $shared = false, $protected = false)
{
$key = $this->resolveAlias($key);
$hasKey = $this->has($key);
if ($hasKey && $this->isLocal($key) && $this->isProtected($key)) {
throw new ProtectedKeyException(sprintf("Key %s is protected and can't be overwritten.", $key));
}
if ($value === null && $hasKey) {
unset($this->resources[$key]);
return $this;
}
$mode = $shared ? ContainerResource::SHARE : ContainerResource::NO_SHARE;
$mode |= $protected ? ContainerResource::PROTECT : ContainerResource::NO_PROTECT;
$this->resources[$key] = new ContainerResource($this, $value, $mode);
return $this;
}
/**
* Shortcut method for creating protected keys.
*
* @param string $key Name of dataStore key to set.
* @param mixed $value Callable function to run or string to retrieve when requesting the specified $key.
* @param boolean $shared True to create and store a shared instance.
*
* @return $this
*
* @since 1.0
*/
public function protect($key, $value, $shared = false)
{
return $this->set($key, $value, $shared, true);
}
/**
* Shortcut method for creating shared keys.
*
* @param string $key Name of dataStore key to set.
* @param mixed $value Callable function to run or string to retrieve when requesting the specified $key.
* @param boolean $protected True to protect this item from being overwritten. Useful for services.
*
* @return $this
*
* @since 1.0
*/
public function share($key, $value, $protected = false)
{
return $this->set($key, $value, true, $protected);
}
/**
* Get the raw data assigned to a key.
*
* @param string $key The key for which to get the stored item.
* @param boolean $bail Throw an exception, if the key is not found
*
* @return ContainerResource|null The resource if present, or null if instructed to not bail
*
* @since 2.0.0
* @throws KeyNotFoundException
*/
public function getResource(string $key, bool $bail = false): ?ContainerResource
{
if (isset($this->resources[$key])) {
return $this->resources[$key];
}
if ($this->parent instanceof self) {
return $this->parent->getResource($key);
}
if ($this->parent instanceof ContainerInterface && $this->parent->has($key)) {
return new ContainerResource($this, $this->parent->get($key), ContainerResource::SHARE | ContainerResource::PROTECT);
}
if ($bail) {
throw new KeyNotFoundException(sprintf('Key %s has not been registered with the container.', $key));
}
return null;
}
/**
* Method to force the container to return a new instance of the results of the callback for requested $key.
*
* @param string $key Name of the resources key to get.
*
* @return mixed Results of running the callback for the specified key.
*
* @since 1.0
*/
public function getNewInstance($key)
{
$key = $this->resolveAlias($key);
$this->getResource($key, true)->reset();
return $this->get($key);
}
/**
* Register a service provider to the container.
*
* @param ServiceProviderInterface $provider The service provider to register.
*
* @return $this
*
* @since 1.0
*/
public function registerServiceProvider(ServiceProviderInterface $provider)
{
$provider->register($this);
return $this;
}
/**
* Retrieve the keys for services assigned to this container.
*
* @return array
*
* @since 1.5.0
*/
public function getKeys()
{
return array_unique(array_merge(array_keys($this->aliases), array_keys($this->resources)));
}
}

29
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI;
/**
* Defines the interface for a Container Aware class.
*
* @since 1.0
*/
interface ContainerAwareInterface
{
/**
* Set the DI container.
*
* @param Container $container The DI container.
*
* @return mixed
*
* @since 1.0
*/
public function setContainer(Container $container);
}

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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI;
use Joomla\DI\Exception\ContainerNotFoundException;
/**
* Defines the trait for a Container Aware Class.
*
* @since 1.2
*/
trait ContainerAwareTrait
{
/**
* DI Container
*
* @var Container
* @since 1.2
*/
private $container;
/**
* Get the DI container.
*
* @return Container
*
* @since 1.2
* @throws ContainerNotFoundException May be thrown if the container has not been set.
*/
protected function getContainer()
{
if ($this->container) {
return $this->container;
}
throw new ContainerNotFoundException('Container not set in ' . \get_class($this));
}
/**
* Set the DI container.
*
* @param Container $container The DI container.
*
* @return $this
*
* @since 1.2
*/
public function setContainer(Container $container)
{
$this->container = $container;
return $this;
}
}

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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI;
/**
* Defines the representation of a resource.
*
* @since 2.0.0
* @internal
*/
final class ContainerResource
{
/**
* Defines the resource as non-shared
*
* @const integer
* @since 2.0.0
*/
public const NO_SHARE = 0;
/**
* Defines the resource as shared
*
* @const integer
* @since 2.0.0
*/
public const SHARE = 1;
/**
* Defines the resource as non-protected
*
* @const integer
* @since 2.0.0
*/
public const NO_PROTECT = 0;
/**
* Defines the resource as protected
*
* @const integer
* @since 2.0.0
*/
public const PROTECT = 2;
/**
* The container the resource is assigned to
*
* @var Container
* @since 2.0.0
*/
private $container;
/**
* The object instance for a shared object
*
* @var mixed
* @since 2.0.0
*/
private $instance;
/**
* The factory object
*
* @var callable
* @since 2.0.0
*/
private $factory;
/**
* Flag if the resource is shared
*
* @var boolean
* @since 2.0.0
*/
private $shared = false;
/**
* Flag if the resource is protected
*
* @var boolean
* @since 2.0.0
*/
private $protected = false;
/**
* Create a resource representation
*
* @param Container $container The container
* @param mixed $value The resource or its factory closure
* @param integer $mode Resource mode, defaults to Resource::NO_SHARE | Resource::NO_PROTECT
*
* @since 2.0.0
*/
public function __construct(Container $container, $value, int $mode = 0)
{
$this->container = $container;
$this->shared = ($mode & self::SHARE) === self::SHARE;
$this->protected = ($mode & self::PROTECT) === self::PROTECT;
if (\is_callable($value)) {
$this->factory = $value;
} else {
if ($this->shared) {
$this->instance = $value;
}
if (\is_object($value)) {
$this->factory = function () use ($value) {
return clone $value;
};
} else {
$this->factory = function () use ($value) {
return $value;
};
}
}
}
/**
* Check whether the resource is shared
*
* @return boolean
*
* @since 2.0.0
*/
public function isShared(): bool
{
return $this->shared;
}
/**
* Check whether the resource is protected
*
* @return boolean
*
* @since 2.0.0
*/
public function isProtected(): bool
{
return $this->protected;
}
/**
* Get an instance of the resource
*
* If a factory was provided, the resource is created and - if it is a shared resource - cached internally.
* If the resource was provided directly, that resource is returned.
*
* @return mixed
*
* @since 2.0.0
*/
public function getInstance()
{
$callable = $this->factory;
if ($this->isShared()) {
if ($this->instance === null) {
$this->instance = $callable($this->container);
}
return $this->instance;
}
return $callable($this->container);
}
/**
* Get the factory
*
* @return callable
*
* @since 2.0.0
*/
public function getFactory(): callable
{
return $this->factory;
}
/**
* Reset the resource
*
* The instance cache is cleared, so that the next call to get() returns a new instance.
* This has an effect on shared, non-protected resources only.
*
* @return boolean True if the resource was reset, false otherwise
*
* @since 2.0.0
*/
public function reset(): bool
{
if ($this->isShared() && !$this->isProtected()) {
$this->instance = null;
return true;
}
return false;
}
}

21
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI\Exception;
use Psr\Container\ContainerExceptionInterface;
/**
* No container is available.
*
* @since 2.0.0
*/
class ContainerNotFoundException extends \RuntimeException implements ContainerExceptionInterface
{
}

21
libraries/vendor/joomla/di/src/Exception/DependencyResolutionException.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI\Exception;
use Psr\Container\ContainerExceptionInterface;
/**
* Exception class for handling errors in resolving a dependency
*
* @since 1.0
*/
class DependencyResolutionException extends \RuntimeException implements ContainerExceptionInterface
{
}

21
libraries/vendor/joomla/di/src/Exception/KeyNotFoundException.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI\Exception;
use Psr\Container\NotFoundExceptionInterface;
/**
* No entry was found in the container.
*
* @since 1.5.0
*/
class KeyNotFoundException extends \InvalidArgumentException implements NotFoundExceptionInterface
{
}

21
libraries/vendor/joomla/di/src/Exception/ProtectedKeyException.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI\Exception;
use Psr\Container\ContainerExceptionInterface;
/**
* Attempt to set the value of a protected key, which already is set
*
* @since 1.5.0
*/
class ProtectedKeyException extends \OutOfBoundsException implements ContainerExceptionInterface
{
}

29
libraries/vendor/joomla/di/src/ServiceProviderInterface.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework DI Package
*
* @copyright Copyright (C) 2013 - 2018 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\DI;
/**
* Defines the interface for a Service Provider.
*
* @since 1.0
*/
interface ServiceProviderInterface
{
/**
* Registers the service provider with a DI container.
*
* @param Container $container The DI container.
*
* @return void
*
* @since 1.0
*/
public function register(Container $container);
}