MoonSharp

This page tracks which parts of the Lua 5.2 standard library MoonSharp implements, on which platforms, and which functions can yield.

NOTE : this reflects the state of the standard library as captured in the original status document. It has not been re-verified against the 3.0.0 beta - see the changelog for recent changes.

Legend

New in Moon#	Function has been introduced in Moon# and is not present in Lua 5.2
Done	Implemented completely
Done, with differences	Implemented, but has differences from the Lua version (detailed in comments)
Not done, issues	Not completed yet
Unsupported, stub	Unsupported, but implemented as a stub for compatibility
Unsupported	Unsupported and likely support will be limited or non-existent also in the future
Not done yet	Not even started

The Yield column says whether the function can yield a coroutine: YES it can, NO it cannot, – not applicable.

API	Status	Yield	CLR	Mono	Unity	Differences	Yielding notes
`_G`	Done	–	✓	✓	✓
`_VERSION`	Done	–	✓	✓	✓
`_MOONSHARP`	New in Moon#	–	✓	✓	✓	A table, containing several fields including moonsharp version, platform and emulated lua version.
`assert`	Done	–	✓	✓	✓
`collectgarbage`	Done	–	✓	✓	✓	Some arguments ignored
`dofile`	Done	YES	✓	✓	✓
`error`	Done	–	✓	✓	✓
`getmetatable`	Done	–	✓	✓	✓
`ipairs`	Done	YES	✓	✓	✓
`load`	Done	NO	✓	✓	✓		A function as input cannot yield.
`loadsafe`	New in Moon#	NO	✓	✓	✓	Same as `loadfile`, but with better handling of default `_ENV` for sandboxing.
`loadfile`	Done, with differences	–	✓	✓	✓	stdin as input is not supported.
`loadfilesafe`	New in Moon#	–	✓	✓	✓	Same as `loadfile`, but with better handling of default `_ENV` for sandboxing.
`next`	Done	–	✓	✓	✓
`pairs`	Done	YES	✓	✓	✓
`pcall`	Done	YES	✓	✓	✓
`print`	Done	NO	✓	✓	✓		`__tostring` cannot yield when called from print
`rawequal`	Done	–	✓	✓	✓
`rawget`	Done	–	✓	✓	✓
`rawlen`	Done	–	✓	✓	✓
`rawset`	Done	–	✓	✓	✓
`require`	Done	YES	✓	✓	✓	Minor internal differences
`select`	Done	–	✓	✓	✓
`setmetatable`	Done	–	✓	✓	✓
`tonumber`	Done, with differences	–	✓	✓	✓	Only bases between 2 and 10, and base 16 are supported.
`tostring`	Done	YES	✓	✓	✓
`type`	Done	–	✓	✓	✓
`xpcall`	Done, with differences	NO	✓	✓	✓	Double faults are appended to error and ignored.	Code can yield, but the error message handler cannot.
`bit32.arshift`	Done		✓	✓	✓
`bit32.band`	Done		✓	✓	✓
`bit32.bnot`	Done		✓	✓	✓
`bit32.bor`	Done		✓	✓	✓
`bit32.btest`	Done		✓	✓	✓
`bit32.bxor`	Done		✓	✓	✓
`bit32.extract`	Done		✓	✓	✓
`bit32.lrotate`	Done		✓	✓	✓
`bit32.lshift`	Done		✓	✓	✓
`bit32.replace`	Done		✓	✓	✓
`bit32.rrotate`	Done		✓	✓	✓
`bit32.rshift`	Done		✓	✓	✓
`coroutine.create`	Done		✓	✓	✓
`coroutine.resume`	Done		✓	✓	✓
`coroutine.running`	Done		✓	✓	✓
`coroutine.status`	Done		✓	✓	✓
`coroutine.wrap`	Done		✓	✓	✓
`coroutine.yield`	Done		✓	✓	✓
`debug.debug`	Done		✓	✓	✓
`debug.getuservalue`	Done		✓	✓	✓
`debug.gethook`	Unsupported		✗	✗	✗	Use the debugger infrastructure.
`debug.getinfo`	Unsupported		✗	✗	✗	Function is heavily dependent on implementation details.
`debug.getlocal`	Unsupported		✗	✗	✗	Function is heavily dependent on implementation details.
`debug.getmetatable`	Done		✓	✓	✓
`debug.getregistry`	Done		✓	✓	✓
`debug.getupvalue`	Done		✓	✓	✓
`debug.setuservalue`	Done		✓	✓	✓
`debug.sethook`	Unsupported		✗	✗	✗	Use the debugger infrastructure.
`debug.setlocal`	Unsupported		✗	✗	✗	Function is heavily dependent on implementation details.
`debug.setmetatable`	Done		✓	✓	✓	Cannot set on userdata as now.
`debug.setupvalue`	Done		✓	✓	✓
`debug.traceback`	Done		✓	✓	✓
`debug.upvalueid`	Done, with differences		✓	✓	✓	Works ok, but returns a number instead of userdata (still, can be used in pretty much the same way).
`debug.upvaluejoin`	Not done yet
`dynamic.eval`	New in Moon#		✓	✓	✓	Evaluates the code passed as a parameter dynamically. All accesses are raw, function calls will raise an error.
`dynamic.prepare`	New in Moon#		✓	✓	✓	Prepares an expression for faster evaluation with `dynamic.eval`.
`file:close`	Done		✓	✓	✗
`file:flush`	Done		✓	✓	✗
`file:lines`	Done		✓	✓	✗
`file:read`	Done		✓	✓	✗
`file:seek`	Done		✓	✓	✗
`file:setvbuf`	Done		✓	✓	✗
`file:write`	Done		✓	✓	✗
`io.close`	Done		✓	✓	✗
`io.flush`	Done		✓	✓	✗
`io.input`	Done		✓	✓	✗
`io.lines`	Done		✓	✓	✗
`io.open`	Done		✓	✓	✗
`io.output`	Done		✓	✓	✗
`io.popen`	Unsupported		✓	✓	✗	Interprocess comms, stdin and stdout are NOT supported. This however is ok by the Lua standard.
`io.read`	Done		✓	✓	✗
`io.stderr`	Done		✓	✓	✗
`io.stdin`	Done		✓	✓	✗
`io.stdout`	Done		✓	✓	✗
`io.tmpfile`	Done		✓	✓	✗
`io.type`	Done		✓	✓	✗
`io.write`	Done		✓	✓	✗
`math.abs`	Done	–	✓	✓	✓
`math.acos`	Done	–	✓	✓	✓
`math.asin`	Done	–	✓	✓	✓
`math.atan`	Done	–	✓	✓	✓
`math.atan2`	Done	–	✓	✓	✓
`math.ceil`	Done	–	✓	✓	✓
`math.cos`	Done	–	✓	✓	✓
`math.cosh`	Done	–	✓	✓	✓
`math.deg`	Done	–	✓	✓	✓
`math.exp`	Done	–	✓	✓	✓
`math.floor`	Done	–	✓	✓	✓
`math.fmod`	Done	–	✓	✓	✓
`math.frexp`	Done	–	✓	✓	✓
`math.huge`	Done	–	✓	✓	✓
`math.ldexp`	Done	–	✓	✓	✓
`math.log`	Done	–	✓	✓	✓
`math.max`	Done	–	✓	✓	✓
`math.min`	Done	–	✓	✓	✓
`math.modf`	Done	–	✓	✓	✓
`math.pi`	Done	–	✓	✓	✓
`math.pow`	Done	–	✓	✓	✓
`math.rad`	Done	–	✓	✓	✓
`math.random`	Done	–	✓	✓	✓	Minor differences in accepted inputs (MoonSharp is more tolerant)
`math.randomseed`	Done	–	✓	✓	✓
`math.sin`	Done	–	✓	✓	✓
`math.sinh`	Done	–	✓	✓	✓
`math.sqrt`	Done	–	✓	✓	✓
`math.tan`	Done	–	✓	✓	✓
`math.tanh`	Done	–	✓	✓	✓
`os.clock`	Done		✓	✓	✓
`os.date`	Done		✓	✓	✓	Running on Mono systems might lead to erroneous output due to a Mono bug (11817)
`os.difftime`	Done		✓	✓	✓
`os.execute`	Done		✓	✓	✗
`os.exit`	Done		✓	✓	✗
`os.getenv`	Done		✓	✓	✗
`os.remove`	Done		✓	✓	✗
`os.rename`	Done		✓	✓	✗
`os.setlocale`	Unsupported, stub		✓	✓	✗	Unsupported, currently a stub
`os.time`	Done		✓	✓	✓
`os.tmpname`	Done		✓	✓	✗
`package.config`	Done		✓	✓	✓
`package.cpath`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`package.loaded`	Done		✓	✓	✓
`package.loadlib`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`package.path`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`package.preload`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`package.searchers`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`package.searchpath`	Unsupported		✗	✗	✗	See Script loaders to see how to customize loading of scripts and packages
`string.byte`	Done		✓	✓	✓	Character codes are cropped to 0-255. Use `string.unicode` to have the unicode code-point.
`string.char`	Done		✓	✓	✓	Values > 255 are silently supported (as unicode codepoints)
`string.dump`	Done		✓	✓	✓	Functions with upvalues raise an error as Lua 5.0 did and as Lua 5.2 should do according to documentation.
`string.find`	Done		✓	✓	✓	Implementation taken from KopiLua. Patterns cannot contain \0. Use %z instead.
`string.format`	Done	NO	✓	✓	✓	Implementation taken from KopiLua.	`__tostring` metamethod cannot yield.
`string.gmatch`	Done		✓	✓	✓	Implementation taken from KopiLua. Patterns cannot contain \0. Use %z instead.
`string.gsub`	Done	NO	✓	✓	✓	Implementation taken from KopiLua. Patterns cannot contain \0. Use %z instead.	Callback function (if used) cannot yield.
`string.len`	Done		✓	✓	✓
`string.lower`	Done		✓	✓	✓
`string.match`	Done		✓	✓	✓	Implementation taken from KopiLua. Patterns cannot contain \0. Use %z instead.
`string.rep`	Done		✓	✓	✓
`string.reverse`	Done		✓	✓	✓
`string.sub`	Done		✓	✓	✓
`string.unicode`	New in Moon#		✓	✓	✓	Works just as `string.byte` would do, but returns the unicode code-point without truncation.
`string.upper`	Done		✓	✓	✓
`table.concat`	Done	NO	✓	✓	✓		`__len` cannot yield
`table.insert`	Done	NO	✓	✓	✓		`__len` cannot yield
`table.pack`	Done		✓	✓	✓
`table.remove`	Done	NO	✓	✓	✓		`__len` cannot yield
`table.sort`	Done	NO	✓	✓	✓		`__lt`, `__len` and the comparison function cannot yield
`table.unpack`	Done		✓	✓	✓

The original spreadsheet is still available as a PDF download.

Standard Library - Status of the Lua standard library in MoonSharp