Introduce a method, ScribuntoEngineBase::getResourceUsage(), which may be
overridden by script engine implementations to provide CPU and memory usage
data.
Change-Id: I6a4ed03c1261f43a7ce7de6f274c32c450e66abb
There are like a billion things missing in the inline documentation
of this extension. Wow. This is what I can do for now.
Change-Id: I019c24d13cf5cb22dde4d710b86ef8f976e1ec96
Scribunto currently supports libraries with PHP callbacks that are
loaded on startup, and pure-Lua libraries that may be loaded from the
module with require().
This change allows for libraries with PHP callbacks to also be loaded
with require().
Change-Id: Ibdc1f4ef51b1c8644c3d4c98d57755b5c06447a5
Clean up trailing whitespace from all of our code, and add comments
indicating that apparently unused variables are ScopedCallbacks.
Change-Id: I8e5997797cc7b1c64c5351ec112a18f30edc8fef
Change Ie065c7b5 added an option to show profiling data at the bottom of
preview pages, and with it new hooks to gather and format this data in a
more structured way than is possible with ParserLimitReport. This change
adds support for the new hooks.
Depends-On: I7799616a602d90e1b8d3f0ece35811ca387bade7
Change-Id: Idffd2d78f9a0217c99c07cbbfc844d6daf0172f7
Use the SoftwareInfo hook to add the versions of LuaSandbox and Lua to
Special:Version.
Bug: 39655
Change-Id: I912197efee0211066677c4d46e638fb546a410c6
On my test system, ScriuntoHooks::invokeHook takes about 4 seconds of
CPU time during the parse of a page containing 1000 #invokes of a module
containing a single do-nothing function. And about 2.3 of those seconds
appear to be spent in ScribuntoEngineBase::fetchModuleFromParser.
ScribuntoEngineBase::fetchModuleFromParser already assumes that if
Parser::fetchTemplateAndTitle returns the same $finalTitle then $text is
also the same and we can reuse the same module. But it seems just as
likely that the same input $title is always going to give the same
$finalTitle, so we may as well skip calling
Parser::fetchTemplateAndTitle entirely if we've seen the input $title
before.
This change takes the CPU time spent in ScriuntoHooks::invokeHook in the
test described above down to about 1.5 seconds. And since it's very
likely that $title and $finalTitle are the same (Modules don't support
redirects, so it's basically TemplateSandbox that would cause that), it
probably doesn't even increase the size of the module cache.
Change-Id: I87ad8b85d0f82791f49158d62effa6dc7c20f058
Wikidata has already requested the ability to add libraries into Lua. We
do this in a simple way: add a $wgScribuntoExtraLibraries global, and
load whatever modules someone puts there.
Change-Id: I460b4e7b968eb02dd86620f1e4b50daf1be9e901
Adds a base class for libraries with some utility functions in PHP, and a
Lua library with utility functions for use from Lua.
Change-Id: I3d67b1de8bc50488fe3a722e4e2de5849285d127
Add a profiler report to the limit report for pages with more than 1s
of Lua time. Uses the profiler introduced in I0b83a914 of LuaSandbox.
Also, fixed some circular references which were preventing the
LuaSandbox object from being destroyed when Scribunto::resetEngine()
was called. Otherwise a large number of interval timers could be started
due to a LuaSandbox object resource leak.
Change-Id: I5487fe2623974939d07f09f7197e86a5f297a8f1
* Added a debug console to the edit page, allowing unsaved modules to be
tested.
* Removed the "preview" button from the edit page.
* Only show the "ignore code errors" checkbox on module edit pages, not
all edit pages.
* Added Lua function mw.log() for sending messages to the debug log.
Change-Id: Ia51f439e573a1deb5b83f94ddd1a86792d5569c1
* Implemented the new parser interface based on a frame object, as
described in the design document and wikitech-l.
* Added parser tests for the new interface.
* Removed {{script:}} parser function
* Allow named parameters to {{#invoke:}}
* Don't trim the return value
* If a function invoked by #invoke returns multiple values, concatenate
them into a single string.
* If there is an error during parse, show the error message as an HTML
comment as well as via JavaScript. This makes parser test construction
easier, and probably makes debugging easier also.
* Rename mw_internal to mw_php to clarify its role. It is now strictly a
private Lua -> PHP interface function table.
* Protect mw.setup() against multiple invocation.
* Fixed a bug in Scribunto_LuaStandaloneInterpreter::receiveMessage():
large packets caused fread() to return with less than the requested
amount of data, which previously caused an exception. It's necessary
to check for EOF and to repeat the read to get all data. The receive
function on the Lua side does not suffer from this problem.
* In the standalone engine, fixed a bug in the interpretation of null
return values from PHP callbacks. This should return no values to Lua.
* Updated the Lua unit tests to account for the fact that functions are
now forced to return strings.
* Updated the getfenv and setfenv tests to account for the extra stack
level introduced by mw.executeFunction().
Change-Id: If8fdecdfc91ebe7bd4b1dae8489ccbdeb6bbf5ce
* Added error backtrace collection to MWServer:handleCall()
* When there is an error on parse, show a short and simple inline error
message to the user, which when clicked, expands to a full error with
HTML-formatted backtrace.
* When an error is encountered during module validation, have the code
editor jump directly to the line. Requires r115011.
* Expose the code location of most errors to Scribunto, by parsing the
standard error message format.
* During module validation, abbreviate the error location if the error
is in the same module.
* Do not execute the module during validation, just parse it. Execution
does not really work without an active parse operation in progress.
It already caused a fatal error if you called require() from the main
chunk, and problems would have become more visible as more
parser-related APIs were added.
* LuaSandbox does not yet provide backtraces, but this is planned.
Change-Id: Id9f6564a41b310792b3fe3ebb527cbf8f8771bd1
* Added tests for the engine classes.
* Added some tests that run under Lua.
* In the chunk names, fixed truncation of module names at 60 bytes
by using an "=" prefix instead of @.
* Fixed a bug in mw.clone() which was causing the metatable to be set on
the source table instead of the destination.
* Put restricted setfenv/getfenv in the cloned environment rather than
the base environment, they work better that way.
* In setfenv(), check for getfenv() == nil, since that's what our own
restricted getfenv returns.
* Fixed getfenv() handling of numeric arguments: add one where
appropriate.
Change-Id: I2b356fd65a3fcb348c4e99a3a4267408fb995739
Package library:
* Added a simulation of the Lua 5.1 package library.
* Removed mw.import(), replaced it with a package loader. Packages can be
retrieved from the wiki, using require('Module:Foo'), or from files
distributed with Scribunto, using require('foo'). The "Module:" prefix allows
for source compatibility with existing Lua code.
* Added a couple of libraries from LuaForge: luabit and stringtools.
* Made fetchModuleFromParser() return null on error instead of throwing an
exception, to more easily support the desired behaviour of the package loader,
which needs to return null on error.
* Renamed mw.setupEnvironment() to mw.setup() since it is setting up things
other than the environment now.
* In MWServer:handleRegisterLibrary(), remove the feature which interprets dots
in library names, since LuaSandbox doesn't support this.
Improved module isolation and related refactoring:
* Expose restricted versions of getfenv() and setfenv() to user Lua code.
Requires luasandbox r114952.
* Don't cache the export list returned by module execution for later function
calls. This breaks isolation of #invoke calls, since the local variables are
persistent.
* Removed ScribuntoFunctionBase and its children, since it doesn't really have
a purpose if it can't cache anything. Instead, invoke functions using a module
method called invoke().
* Removed Module::initialize(), replaced it with a validate() function. This is
a more elegant interface and works better with the new module caching scheme.
* Use a Status object for the return value of Engine::validate() instead of an
array. Use the formatting facilities of the Status class.
Other:
* Removed "too many returns" error, doesn't fit in with Lua conventions.
* Use the standalone engine by default, so that the extension will work without
configuration for more people.
* Added an accessor for $engine->interpreter
* Fix mw.clone() to correctly clone metatables
* If the standalone interpreter exits due to an error, there are some contexts
where the initial error will be caught and ignored, and the user will see the
error from checkValid() instead. In this case, rethrow the original error for
a more informative message.
* Load mw.lua into the initial standalone environment, to reduce code
duplication between mw.lua and MWServer.lua.
* Fixed a bug in Scribunto_LuaStandaloneInterpreter::handleCall() for functions
that return no results.
* Fixed a bug in encodeLuaVar() for strings with "\r". Added test case.
* In MWServer.lua, don't call error() for internal errors, instead just print
the error and exit. This avoids a protocol violation when an error is
encountered from within handleCall().
* Added lots of documentation. Lua doc comments are in LuaDoc format.
Change-Id: Ie2fd572c362bedf02f45d3fa5352a5280e034740
* Introduced a Lua implementation based on shelling out to a standard Lua binary.
* Bundled several Lua binaries for common platforms. I haven't added a 32-bit Linux binary yet, but that will come.
* Refactored the existing Lua class, bringing out functionality common to all Lua implementations into a set of common base classes.
* Moved the bulk of the implementation-specific functionality into a set of "interpreter" classes.
* Renamed LuaSandboxEngine to Scribunto_LuaSandboxEngine
* Don't create an engine object unconditionally when the ParserLimitReport hook is called.
* Implemented isolation of module global variable namespaces. This means that separate {{#invoke}} calls can't pass data to each other -- this was a desired feature in planning since it allows more flexibility in wikitext parser design. Isolation for mw.import() means that modules cannot accidentally create global variables which affect other modules -- exports are solely via the return value.
Change-Id: I3fa35651fe5b1fbfd85adeadc220b1ea31cd6f0b
* Used Parser::fetchTemplateAndTitle() to get modules and register them in templatelinks. Most of the logic was previously duplicated.
* Changed the configuration and factory functions to allow for the possibility of multiple engines coexisting on the one wiki.
* Made the $parser parameter optional, to improve debugging in the case where a parser is needed but parsing has not started. Removed all $wgParser references.
* Renamed Scripting::getEngine() to getParserEngine() and resetEngine() to resetParserEngine()
* Removed setOptions() and updateOptions(). If you want to change the options, you can always make a new instance.
* Renamed getModule() to fetchModuleFromParser()
* Simplified module constructor parameters and member variable list
* Fixed spelling error langauge -> language
* Renamed a few variables for clarity: $module -> $moduleName, $function -> $functionName
* Renamed getLimitsReport() to getLimitReport() as it is in Parser
* Use an accessor for getting LuaSandboxEngineModule::$contents
* Renamed configuration variable maxCPU to cpuLimit
* Include the full message name as a parameter to ScriptingException. This makes it easier to find messages in the i18n file, and it makes it easier to find invocation points when a translator wants to know how a message is used. Adding the message name as a comment on the same line seems like a waste of space when you can just make it an actual parameter.
* Reduce the number of formal parameters to ScriptingException::__construct(), since there is already too many and we may want to add more things later, such as backtraces with hyperlinks and other such stuff.
* Include the code location as $2 unconditionally so that there is less chance of getting the parameters wrong
* Shortened some message names. Wrote English text for messages without it.
* Removed ScriptingEngineBase::load(), inappropriate interface specification, only used by child classes and more properly defined by them
* Fixed inappropriate use of final
* Fixed case of a class constant to conform with MediaWiki conventions
* Use a factory function interface for module creation instead of a class name accessor
* Don't pass unnecessary $engine parameter to ScriptingFunctionBase::__construct(). Pass parent object as the first parameter per convention.
* Fixed unnecessary reference parameter in doRunHook()
* Have LuaSandboxEngineFunction::call() return the first result or null, per the base class documentation, instead of imploding.
* Use strval() to avoid a warning in case call() returns an array or object
* Improved some comments
