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v0.10.0 (Oct 25th, 2024)

Changes since v0.10.0-rc.1

  • Added error-send feature flag (disabled by default) to require Send + Sync for Error
  • Some performance improvements

v0.10.0-rc.1

  • Lua::scope is back
  • Support yielding from hooks for Lua 5.3+
  • Support setting metatable for Lua builtin types (number/string/function/etc)
  • Added LuaNativeFn/LuaNativeFnMut/LuaNativeAsyncFn traits for using in Function::wrap
  • Added Error::chain method to return iterator over nested errors
  • Added Lua::exec_raw helper to execute low-level Lua C API code
  • Added Either<L, R> enum to combine two types into a single one
  • Added a new Buffer type for Luau
  • Added Value::is_error and Value::as_error helpers
  • Added Value::Other variant to represent unknown Lua types (eg LuaJIT CDATA)
  • Added (optional) anyhow feature to implement IntoLua for anyhow::Error
  • Added IntoLua/FromLua for OsString/OsStr and PathBuf/Path

v0.10.0-beta.2

  • Updated ThreadStatus enum to include Running and Finished variants.
  • Error::CoroutineInactive renamed to Error::CoroutineUnresumable.
  • IntoLua/IntoLuaMulti now uses impl trait syntax for args (shorten from a.get::<_, T> to a.get::<T>).
  • Removed undocumented Lua::into_static/from_static methods.
  • Futures now require Send bound if send feature is enabled.
  • Dropped lifetime from UserDataMethods and UserDataFields traits.
  • Compiler::compile() now returns Result (Luau).
  • Removed Clone requirement from UserDataFields::add_field().
  • TableExt and AnyUserDataExt traits were combined into ObjectLike trait.
  • Disabled send feature in module mode (since we don't have exclusive access to Lua).
  • Chunk::set_environment() takes Table instead of IntoLua type.
  • Reduced the compile time contribution of next_key_seed and next_value_seed.
  • Reduced the compile time contribution of serde_userdata.
  • Performance improvements.

v0.10.0-beta.1

  • Dropped 'lua lifetime (subtypes now store a weak reference to Lua)
  • Removed (experimental) owned types (they no longer needed)
  • Make Lua types truly Send and Sync (when enabling send feature flag)
  • Removed UserData impl for Rc/Arc types ("any" userdata functions can be used instead)
  • Lua::replace_registry_value takes &mut RegistryKey
  • Lua::scope temporary disabled (will be re-added in the next release)

v0.9.9

  • Minimal Luau updated to 0.629
  • Fixed bug when attempting to reset or resume already running coroutines (#416).
  • Added RegistryKey::id() method to get the underlying Lua registry key id.

v0.9.8

  • Fixed serializing same table multiple times (#408)
  • Use mlua-sys v0.6 (to support Luau 0.624+)
  • Fixed cross compilation of windows dlls from unix (#394)

v0.9.7

  • Implemented IntoLua for RegistryKey
  • Mark __idiv metamethod as available for luau
  • Added Function::deep_clone() method (Luau)
  • Added SerializeOptions::detect_serde_json_arbitrary_precision option
  • Added Lua::create_buffer() method (Luau)
  • Support serializing buffer type as a byte slice (Luau)
  • Perf: Implemented push_into_stack/from_stack for Option<T>
  • Added Lua::create_ser_any_userdata() method

v0.9.6

  • Added to_pointer function to Function/Table/Thread
  • Implemented IntoLua for &Value
  • Implemented FromLua for RegistryKey
  • Faster (~5%) table array traversal during serialization
  • Some performance improvements for bool/int types

v0.9.5

  • Minimal Luau updated to 0.609
  • Luau max stack size increased to 1M (from 100K)
  • Implemented IntoLua for refs to String/Table/Function/AnyUserData/Thread + RegistryKey
  • Implemented IntoLua and FromLua for OwnedThread/OwnedString
  • Fixed FromLua derive proc macro to cover more cases

v0.9.4

  • Fixed loading all-in-one modules under mixed states (eg. main state and coroutines)

v0.9.3

  • WebAssembly support (wasm32-unknown-emscripten target)
  • Performance improvements (faster Lua function calls for lua51/jit/luau)

v0.9.2

  • Added binary modules support to Luau
  • Added Luau package module (uses StdLib::PACKAGE) with loaders (follows lua5.1 interface)
  • Added support of Luau 0.601+ buffer type (represented as userdata in Rust)
  • LuaJIT cdata type is also represented as userdata in Rust (instead of panic)
  • Vendored LuaJIT switched to rolling vanilla (from openresty)
  • Added Table::for_each method for fast table pairs traversal (faster than pairs)
  • Performance improvements around table traversal (and faster serialization)
  • Bug fixes and improvements

v0.9.1

  • impl Default for Lua
  • impl IntoLuaMulti for std::result::Result<(), E>
  • Fix using wrong userdata index after processing Variadic args (#311)

v0.9.0

Changes since v0.9.0-rc.3

  • Improved non-static (scoped) userdata support
  • Added Scope::create_any_userdata() method
  • Added Lua::set_vector_metatable() method (unstable feature flag)
  • Added OwnedThread type (unstable feature flag)
  • Minimal Luau updated to 0.590
  • Added new option sort_keys to DeserializeOptions (Lua::from_value() method)
  • Changed Table::raw_len() output type to usize
  • Helper functions for Value (eg: Value::as_number()/Value::as_string/etc)
  • Performance improvements

v0.9.0-rc.3

  • Minimal Luau updated to 0.588

v0.9.0-rc.2

  • Added #[derive(FromLua)] macro to opt-in into FromLua<T> where T: 'static + Clone (userdata type).
  • Support vendored module mode for windows (raw-dylib linking, Rust 1.71+)
  • module and vendored features are now mutually exclusive
  • Use C-unwind ABI (Rust 1.71+)
  • Changed AsChunk trait to support capturing wrapped Lua types

v0.9.0-rc.1

  • UserDataMethods::add_async_method() takes &T instead of cloning T
  • Implemented PartialEq<[T]> for tables
  • Added Luau 4-dimensional vectors support (luau-vector4 feature)
  • Table::sequence_values() iterator no longer uses any metamethods (Table::raw_sequence_values() is deprecated)
  • Added Table:is_empty() function that checks both hash and array parts
  • Refactored Debug interface
  • Re-exported ffi (mlua-sys) crate for easier writing of unsafe code
  • Refactored Lua 5.4 warnings interface
  • Take &str as function name in TableExt and AnyUserDataExt traits
  • Added module attribule skip_memory_check to improve performance
  • Added AnyUserData::wrap() to provide more easy way of creating any userdata in Lua

v0.9.0-beta.3

  • Added OwnedAnyUserData::take()
  • Switch to DeserializeOwned
  • Overwrite error context when called multiple times
  • New feature flag luau-jit to enable (experimental) Luau codegen backend
  • Set __name field in userdata metatable
  • Added Value::to_string() method similar to luaL_tolstring
  • Lua 5.4.6
  • Application data container now allows to mutably and immutably borrow different types at the same time
  • Performance optimizations
  • Support getting and setting environment for Lua functions.
  • Added UserDataFields::add_field() method to add static fields to UserData

Breaking changes:

  • Require environment to be a Table instead of Value in Chunks.
  • AsChunk::env() renamed to AsChunk::environment()

v0.9.0-beta.2

New features:

  • Added Thread::set_hook() function to set hook on threads
  • Added pretty print to the Debug formatting to Lua Value and Table
  • ffi layer moved to mlua-sys crate
  • Added OwnedString (unstable)

Breaking changes:

  • Refactor HookTriggers (make it const)

v0.9.0-beta.1

New features:

  • Owned Lua types (unstable feature flag)
  • New functions Function::wrap/Function::wrap_mut/Function::wrap_async
  • Lua::register_userdata_type() to register a custom userdata types (without requiring UserData trait)
  • Lua::create_any_userdata()
  • Added create_userdata_ref/create_userdata_ref_mut for scopes
  • Added AnyUserDataExt trait with auxiliary functions for AnyUserData
  • Added UserDataRef and UserDataRefMut type wrapped that implement FromLua
  • Improved error handling:
    • Improved error reporting when calling Rust functions from Lua.
    • Added Error::BadArgument to help identify bad argument position or name
    • Added ErrorContext extension trait to attach additional context to Error

Breaking changes:

  • Refactored AsChunk trait
  • ToLua/ToLuaMulti renamed to IntoLua/IntoLuaMulti
  • Renamed to_lua_err to into_lua_err
  • Removed FromLua impl for T: UserData+Clone
  • Removed Lua::async_scope
  • Added &Lua arg to Luau interrupt callback

Other:

  • Better Debug for String
  • Allow deserializing values from serializable UserData using Lua::from_value() method
  • Added Table::clear() method
  • Added Error::downcast_ref() method
  • Support setting memory limit for Lua 5.1/JIT/Luau
  • Support setting module name in #[lua_module(name = "...")] macro
  • Minor fixes and improvements

v0.8.10

  • Update to Luau 0.590 (luau0-src to 0.7.x)
  • Fix loading luau code starting with \t
  • Pin lua-src and luajit-src versions

v0.8.9

  • Update minimal (vendored) Lua 5.4 to 5.4.6
  • Use lua_closethread instead of lua_resetthread in vendored mode (Lua 5.4.6)
  • Allow deserializing Lua null into unit (()) or unit struct.

v0.8.8

  • Fix potential deadlock when trying to reuse dropped registry keys.
  • Optimize userdata methods call when __index and fields_getters are nil

v0.8.7

  • Minimum Luau updated to 0.555 (LUAI_MAXCSTACK limit increased to 100000)
  • _VERSION in Luau now includes version number
  • Fixed lifetime of DebugNames in Debug::names() and DebugSource in Debug::source()
  • Fixed subtraction overflow when calculating index for MultiValue::get()

v0.8.6

  • Fixed bug when recycled Registry slot can be set to Nil

v0.8.5

  • Fixed potential unsoundness when using Layout::from_size_align_unchecked and Rust 1.65+
  • Performance optimizations around string and table creation in standalone mode
  • Added fast track path to Table get/set/len methods without metatable
  • Added new methods push/pop/raw_push/raw_pop to Table
  • Fix getting caller information from Lua::load
  • Better checks and tests when trying to modify a Luau readonly table

v0.8.4

  • Minimal Luau updated to 0.548

v0.8.3

  • Close to-be-closed variables for Lua 5.4 when using call_async functions (#192)
  • Fixed Lua assertion when inspecting another thread stack. (#195)
  • Use more reliable way to create LuaJIT VM (which can fail if use Rust allocator on non-x86 platforms)

v0.8.2

  • Performance optimizations in handling UserData
  • Minimal Luau updated to 0.536
  • Fixed bug in Function::bind when passing empty binds and no arguments (#189)

v0.8.1

  • Added Lua::create_proxy for accessing to UserData static fields and functions without instance
  • Added Table::to_pointer() and String::to_pointer() functions
  • Bugfixes and improvements (#176 #179)

v0.8.0

Changes since 0.7.4

  • Roblox Luau support
  • Removed C glue
  • Added async support to __index and __newindex metamethods
  • Added Function::info() to get information about functions (#149).
  • Added parking_lot dependency under feature flag (for UserData)
  • Hash implementation for Lua String
  • Added Value::to_pointer() function
  • Performance improvements

Breaking changes:

  • Refactored AsChunk trait (added implementation for Path and PathBuf).

v0.8.0-beta.5

  • Lua sources no longer needed to build modules
  • Added __iter metamethod for Luau
  • Added Value::to_pointer() function
  • Added Function::coverage for Luau to obtain coverage report
  • Bugfixes and improvements (#153 #161 #168)

v0.8.0-beta.4

  • Removed &Lua from Lua::set_interrupt as it's not safe (introduced in v0.8.0-beta.3)
  • Enabled Lua::gc_inc for Luau
  • Luau debug module marked as safe (enabled by default)
  • Implemented Hash for Lua String
  • Support mode options in collectgarbage for Luau
  • Added ability to set global Luau compiler (used for loading all chunks).
  • Refactored AsChunk trait (breaking changes). AsChunk now implemented for Path and PathBuf to load lua files from fs.
  • Added parking_lot dependency and feature flag (for UserData)
  • Added Function::info() to get information about functions (#149).
  • Bugfixes and improvements (#104 #142)

v0.8.0-beta.3

  • Luau vector constructor
  • Luau sandboxing support
  • Luau interrupts (yieldable)
  • More Luau compiler options (mutable globals)
  • Other performance improvements

v0.8.0-beta.2

  • Luau vector datatype support
  • Luau readonly table attribute
  • Other Luau improvements

v0.8.0-beta.1

  • Roblox Luau support
  • Refactored ffi module. C glue is no longer required
  • Added async support to __index and __newindex metamethods

v0.7.4

  • Improved Lua::create_registry_value to reuse previously expired registry keys. No need to call Lua::expire_registry_values when creating/dropping registry values.
  • Added Lua::replace_registry_value to change value of an existing Registry Key
  • Async calls optimization

v0.7.3

  • Fixed cross-compilation issue (introduced in 84a174c)

v0.7.2

  • Allow pkg-config to omit include paths if they equals to standard (#114).
  • Various bugfixes (eg. #121)

v0.7.1

  • Fixed traceback generation for errors (#112)
  • Lua::into_static/from_static methods have been removed from the docs and are discouraged for use

v0.7.0

  • New "application data" api to store arbitrary objects inside Lua
  • New feature flag luajit52 to build/support LuaJIT with partial compatibility with Lua 5.2
  • Added async meta methods for all Lua (except 5.1)
  • Added AnyUserData::take() to take UserData objects from Lua
  • Added set_nth_user_value/get_nth_user_value to AnyUserData for all Lua versions
  • Added set_named_user_value/get_named_user_value to AnyUserData for all Lua versions
  • Added Lua::inspect_stack() to get information about the interpreter runtime stack
  • Added set_warning_function/remove_warning_function/warning functions to Lua for 5.4
  • Added TableExt::call() to call tables with __call metamethod as functions
  • Added Lua::unload() to unload modules
  • ToLua implementation for arrays changed to const generics
  • Added thread (coroutine) cache for async execution (disabled by default and works for Lua 5.4/JIT)
  • LuaOptions and (De)SerializeOptions marked as const
  • Fixed recursive tables serialization when using serde::Serialize for Lua Tables
  • Improved errors reporting. Now source included to fmt::Display implementation for Error::CallbackError
  • Major performance improvements

v0.6.6

  • Fixed calculating LUA_REGISTRYINDEX when cross-compiling for lua51/jit (#82)
  • Updated documentation & examples

v0.6.5

  • Fixed bug when polling async futures (#77)
  • Refactor Waker handling in async code (+10% performance gain when calling async functions)
  • Added Location::caller() information to Lua::load() if chunk's name is None (Rust 1.46+)
  • Added serialization of i128/u128 types (serde)

v0.6.4

  • Performance optimizations
  • Fixed table traversal used in recursion detection in deserializer

v0.6.3

  • Disabled catching Rust panics in userdata finalizers on drop. It also has positive performance impact.
  • Added Debug::event() to the hook's Debug structure
  • Simplified interface of hook::HookTriggers
  • Added finalizer to ExtraData in module mode. This helps avoiding memory leak on closing state when Lua unloads modules and frees memory.
  • Added DeserializeOptions struct to control deserializer behavior (from_value_with function).

v0.6.2

  • New functionality: Lua::load_from_function() and Lua::create_c_function()
  • Many optimizations in callbacks/userdata creation and methods execution

v0.6.1

  • Update chunk! documentation (stable Rust limitations)
  • Fixed Lua sequence table conversion to HashSet/BTreeSet
  • once_cell dependency lowered to 1.0

v0.6.0

Changes since 0.5.4

  • New UserDataFields API
  • Full access to UserData metatables with support of setting arbitrary fields.
  • Implement UserData for Rc<RefCell<T>>/Arc<Mutex<T>>/Arc<RwLock<T>> where T: UserData.
  • Added SerializeOptions to to change default Lua serializer behaviour (eg. nil/null/array serialization)
  • Added LuaOptions to customize Lua/Rust behaviour (currently panic handling)
  • Added ToLua/FromLua implementation for Box<str> and Box<[T]>.
  • Added Thread::reset() for luajit/lua54 to recycle threads (coroutines) with attaching a new function.
  • Added chunk! macro support to load chunks of Lua code using the Rust tokenizer and optionally capturing Rust variables.
  • Improved errors reporting (Error's __tostring method formats full stacktraces). This is useful in a module mode.
  • Added String::to_string_lossy
  • Various bugfixes and improvements

Breaking changes:

  • Errors are always Send + Sync to be compatible with the anyhow crate.
  • Removed Result from LuaSerdeExt::null() and LuaSerdeExt::array_metatable() (never fails)
  • Removed Result from Function::dump() (never fails)
  • Removed AnyUserData::has_metamethod() (in favour of full access to metatables)

v0.6.0-beta.3

  • Errors are always Send + Sync to be compatible with anyhow crate
  • Implement UserData for Rc<RefCell>/Arc<Mutex>/Arc<RwLock>
  • Added __ipairs metamethod for Lua 5.2
  • Added String::to_string_lossy
  • Various bugfixes and improvements

v0.6.0-beta.2

  • [Breaking] Removed AnyUserData::has_metamethod()
  • Added Thread::reset() for luajit/lua54 to recycle threads. It's possible to attach a new function to a thread (coroutine).
  • Added chunk! macro support to load chunks of Lua code using the Rust tokenizer and optinally capturing Rust variables.
  • Improved error reporting (Error's __tostring method formats full stacktraces). This is useful in the module mode.

v0.6.0-beta.1

  • New UserDataFields API
  • Allow to define arbitrary MetaMethods
  • MetaMethods::name() is public
  • Do not trigger longjmp in Rust to prevent unwinding across FFI boundaries. See rust-lang/rust#83541
  • Added SerializeOptions to to change default Lua serializer behaviour (eg. nil/null/array serialization)
  • [Breaking] Removed Result from LuaSerdeExt::null() and LuaSerdeExt::array_metatable() (never fails)
  • [Breaking] Removed Result from Function::dump() (never fails)
  • ToLua/FromLua implementation for Box<str> and Box<[T]>
  • [Breaking] Added LuaOptions to customize Lua/Rust behaviour (currently panic handling)
  • Various bugfixes and performance improvements

v0.5.4

  • Build script improvements
  • Improvements in panic handling (resume panic on value popping)
  • Fixed bug serializing 3rd party userdata (causes segfault)
  • Make error::Error non exhaustive

v0.5.3

  • Fixed bug when returning nil-prefixed multi values from async function (+ test)
  • Performance optimisation for async callbacks (polling)

v0.5.2

  • Some performance optimisations (callbacks)
  • ToLua implementation for Cow<str> and Cow<CStr>
  • Fixed bug with Scope destruction of partially polled futures

v0.5.1

  • Support cross compilation that should work well for vendored builds (including LuaJIT with some restrictions)
  • Fix numeric types conversion for 32bit Lua
  • Update tokio to 1.0 for async examples

v0.5.0

  • Serde support under serialize feature flag.
  • Re-export mlua_derive.
  • impl ToLua and FromLua for HashSet and BTreeSet

v0.4.2

  • Added Function::dump() to dump lua function to a binary chunk
  • Added ChunkMode enum to mark chunks as text or binary
  • Updated set_memory_limit doc

v0.4.0

  • Lua 5.4 support with MetaMethod::Close.
  • lua53 feature is disabled by default. Now preferred Lua version have to be chosen explicitly.
  • Provide safety guaraness for Lua state, which means that potenially unsafe operations, like loading C modules (using require or package.loadlib) are disabled. Equalient for the previous Lua::new() function is Lua::unsafe_new().
  • New send feature to require Send.
  • New module feature, that disables linking to Lua Core Libraries. Required for modules.
  • Don't allow 'callback outlive 'lua in Lua::create_function() to fix the unsoundness.
  • Added Lua::into_static() to make 'static Lua state. This is useful to spawn async Lua threads that requires 'static.
  • New function Lua::set_memory_limit() (similar to rlua) to enable memory restrictions in Lua VM (requires Lua >= 5.2).
  • Scope, temporary removed in v0.3, is back with async support.
  • Removed deprecated Table::call() function.
  • Added hooks support (backported from rlua 0.17).
  • New AnyUserData::has_metamethod() function.
  • LuaJIT 2.0.5 (the latest stable) support.
  • Various bug fixes and improvements.