Legoktm has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/311926

Change subject: Initial commit from MediaWiki core
......................................................................

Initial commit from MediaWiki core

Basic tests were written by myself since core didn't have any.

Bug: T146258
Change-Id: Ia40829812304068a08208f6d42b3d18b72da4eb2
---
A .editorconfig
A .gitattributes
A .gitignore
A .travis.yml
A COPYING
A Doxyfile
A README.md
A composer.json
A phpcs.xml
A phpunit.xml.dist
A src/ScopedCallback.php
A tests/ScopedCallbackTest.php
12 files changed, 639 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.wikimedia.org:29418/mediawiki/libs/ScopedCallback 
refs/changes/26/311926/1

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..c2dfc46
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,6 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = tab
+indent_size = tab
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..b6fe658
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,10 @@
+.editorconfig export-ignore
+.gitattributes export-ignore
+.gitignore export-ignore
+.gitreview export-ignore
+.travis.yml export-ignore
+Doxyfile export-ignore
+composer.json export-ignore
+phpcs.xml export-ignore
+phpunit.xml.dist export-ignore
+tests/ export-ignore
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c760786
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/coverage
+/doc
+/vendor
+/composer.lock
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..5d7b980
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,11 @@
+sudo: false
+language: php
+php:
+  - "5.5"
+  - "5.6"
+  - "7.0"
+  - "hhvm"
+install:
+  - composer install
+script:
+  - composer test
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
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+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
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+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+    under certain conditions; type `show c' for details.
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+You should also get your employer (if you work as a programmer) or your
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+This General Public License does not permit incorporating your program into
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diff --git a/Doxyfile b/Doxyfile
new file mode 100644
index 0000000..a5580f2
--- /dev/null
+++ b/Doxyfile
@@ -0,0 +1,26 @@
+# Doxyfile for ScopedCallback
+#
+# See <http://www.stack.nl/~dimitri/doxygen/manual/config.html>
+# for help on how to use this file to configure Doxygen.
+
+PROJECT_NAME           = "ScopedCallback"
+PROJECT_BRIEF          = "Class for asserting that a callback happens when an 
dummy object leaves scope"
+OUTPUT_DIRECTORY       = doc
+JAVADOC_AUTOBRIEF      = YES
+QT_AUTOBRIEF           = YES
+WARN_NO_PARAMDOC       = YES
+INPUT                  = README.md src/
+FILE_PATTERNS          = *.php
+RECURSIVE              = YES
+USE_MDFILE_AS_MAINPAGE = README.md
+HTML_DYNAMIC_SECTIONS  = YES
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+GENERATE_LATEX         = NO
+HAVE_DOT               = YES
+DOT_FONTNAME           = Helvetica
+DOT_FONTSIZE           = 10
+TEMPLATE_RELATIONS     = YES
+CALL_GRAPH             = NO
+CALLER_GRAPH           = NO
+DOT_MULTI_TARGETS      = YES
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b8f7a5f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,41 @@
+[![Latest Stable 
Version]](https://packagist.org/packages/wikimedia/scoped-callback) 
[![License]](https://packagist.org/packages/wikimedia/scoped-callback)
+
+ScopedCallback
+==============
+
+The ScopedCallback class allows for running a function after the
+instance goes out of scope. It can be useful for making sure
+teardown or cleanup functions run even if exceptions are thrown.
+It also makes for a cleaner API for developers, by not requiring
+the callback to be called manually each time.
+
+Additional documentation about the library can be found on
+[MediaWiki.org](https://www.mediawiki.org/wiki/ScopedCallback).
+
+
+Usage
+-----
+
+    use Wikimedia\ScopedCallback;
+    $sc = new ScopedCallback( [ $this, 'teardown' ] );
+    // Even if this throws an exception, the callback will run
+    // or it'll run at the end of the function
+    $this->fooBar();
+    // If you want to manually call the callback
+    ScopedCallback::consume( $sc );
+    // or
+    unset( $sc );
+    // If you want to prevent it from being called
+    ScopedCallback::cancel( $sc );
+
+
+Running tests
+-------------
+
+    composer install --prefer-dist
+    composer test
+
+
+---
+[Latest Stable Version]: 
https://poser.pugx.org/wikimedia/scoped-callback/v/stable.svg
+[License]: https://poser.pugx.org/wikimedia/scoped-callback/license.svg
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..df72197
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,30 @@
+{
+       "name": "wikimedia/scoped-callback",
+       "description": "Class for asserting that a callback happens when an 
dummy object leaves scope",
+       "license": "GPL-2.0+",
+       "homepage": "https://www.mediawiki.org/wiki/ScopedCallback";,
+       "authors": [
+               {
+                       "name": "Aaron Schulz",
+                       "email": "asch...@wikimedia.org"
+               }
+       ],
+       "autoload": {
+               "classmap": ["src/"]
+       },
+       "require": {
+               "php": ">=5.5.9"
+       },
+       "require-dev": {
+               "jakub-onderka/php-parallel-lint": "0.9.2",
+               "phpunit/phpunit": "4.8.27",
+               "mediawiki/mediawiki-codesniffer": "0.7.2"
+       },
+       "scripts": {
+               "test": [
+                       "parallel-lint . --exclude vendor",
+                       "phpunit",
+                       "phpcs -p -s"
+               ]
+       }
+}
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 0000000..06c43bc
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<ruleset>
+       <rule ref="vendor/mediawiki/mediawiki-codesniffer/MediaWiki"/>
+       <file>.</file>
+       <arg name="encoding" value="UTF-8"/>
+       <arg name="extensions" value="php"/>
+       <exclude-pattern>coverage</exclude-pattern>
+       <exclude-pattern>vendor</exclude-pattern>
+       <exclude-pattern>doc/html</exclude-pattern>
+</ruleset>
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..c55317a
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,14 @@
+<phpunit colors="true"
+       beStrictAboutTestsThatDoNotTestAnything="true"
+       beStrictAboutOutputDuringTests="true">
+       <testsuites>
+               <testsuite name="ScopedCallback Tests">
+                       <directory>./tests</directory>
+               </testsuite>
+       </testsuites>
+       <filter>
+               <whitelist addUncoveredFilesFromWhitelist="true">
+                       <directory suffix=".php">./src</directory>
+               </whitelist>
+       </filter>
+</phpunit>
diff --git a/src/ScopedCallback.php b/src/ScopedCallback.php
new file mode 100644
index 0000000..0a685c8
--- /dev/null
+++ b/src/ScopedCallback.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * This file deals with RAII style scoped callbacks.
+ *
+ * Copyright (C) 2016 Aaron Schulz <asch...@wikimedia.org>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+namespace Wikimedia;
+
+/**
+ * Class for asserting that a callback happens when an dummy object leaves 
scope
+ */
+class ScopedCallback {
+       /** @var callable */
+       protected $callback;
+       /** @var array */
+       protected $params;
+
+       /**
+        * @param callable|null $callback
+        * @param array $params Callback arguments (since 1.25)
+        * @throws \InvalidArgumentException
+        */
+       public function __construct( $callback, array $params = [] ) {
+               if ( $callback !== null && !is_callable( $callback ) ) {
+                       throw new \InvalidArgumentException( "Provided callback 
is not valid." );
+               }
+               $this->callback = $callback;
+               $this->params = $params;
+       }
+
+       /**
+        * Trigger a scoped callback and destroy it.
+        * This is the same is just setting it to null.
+        *
+        * @param ScopedCallback $sc
+        */
+       public static function consume( ScopedCallback &$sc = null ) {
+               $sc = null;
+       }
+
+       /**
+        * Destroy a scoped callback without triggering it
+        *
+        * @param ScopedCallback $sc
+        */
+       public static function cancel( ScopedCallback &$sc = null ) {
+               if ( $sc ) {
+                       $sc->callback = null;
+               }
+               $sc = null;
+       }
+
+       /**
+        * Trigger the callback when this leaves scope
+        */
+       function __destruct() {
+               if ( $this->callback !== null ) {
+                       call_user_func_array( $this->callback, $this->params );
+               }
+       }
+}
diff --git a/tests/ScopedCallbackTest.php b/tests/ScopedCallbackTest.php
new file mode 100644
index 0000000..5cad6e4
--- /dev/null
+++ b/tests/ScopedCallbackTest.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * Copyright (C) 2016 Aaron Schulz <asch...@wikimedia.org>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Aaron Schulz <asch...@wikimedia.org>
+ */
+
+namespace Wikimedia\ScopedCallback\Test;
+
+use Wikimedia\ScopedCallback;
+
+/**
+ * @covers ScopedCallback
+ */
+class ScopedCallbackTest extends \PHPUnit_Framework_TestCase {
+
+       public function testScopedCallback() {
+               $called = false;
+               $sc = new ScopedCallback( function () use ( &$called ) {
+                       $called = true;
+               } );
+
+               $this->assertFalse( $called, 'Callback has not run yet' );
+               unset( $sc );
+               $this->assertTrue( $called, 'Callback was called' );
+       }
+
+       public function testParams() {
+               $params = [ 'foo', 'bar', 'baz' ];
+               $sc = new ScopedCallback( function( /*...*/ ) {
+                       $this->assertSame( [ 'foo', 'bar', 'baz' ], 
func_get_args() );
+               }, $params );
+               ScopedCallback::consume( $sc );
+       }
+
+       public function testCancel() {
+               $called = false;
+               $sc = new ScopedCallback( function () use ( &$called ) {
+                       $called = true;
+               } );
+
+               $this->assertFalse( $called, 'Callback has not run yet' );
+               ScopedCallback::cancel( $sc );
+               unset( $sc );
+               $this->assertFalse( $called, 'Callback was not called' );
+       }
+
+       public function testInvalidConstructor() {
+               $this->setExpectedException( \InvalidArgumentException::class );
+               new ScopedCallback( 'not a valid callback' );
+       }
+
+}

-- 
To view, visit https://gerrit.wikimedia.org/r/311926
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia40829812304068a08208f6d42b3d18b72da4eb2
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/libs/ScopedCallback
Gerrit-Branch: master
Gerrit-Owner: Legoktm <legoktm.wikipe...@gmail.com>

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