mlua-sys

What's Changed (since v0.11.0-beta.3)

• Allow linking external Lua libraries in a build script (e.g. pluto) using external mlua-sys feature flag
• Lua::inspect_stack takes a callback with &Debug argument, instead of returning Debug directly
• Added Debug::function method to get function running at a given level
• Debug::curr_line is deprecated in favour of Debug::current_line that returns Option<usize>
• Added Lua::set_globals method to replace global environment
• Table::set_metatable now returns Result<()> (this operation can fail in sandboxed Luau mode)
• impl ToString replaced with Into<StdString> in UserData registration
• Value::as_str and Value::as_string_lossy methods are deprecated (as they are non-idiomatic)
• Bugfixes and improvements

Full Changelog: v0.11.0-beta.3...v0.11.0

Changes since v0.10.0-rc.1

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

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

• 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)

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

• 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)

Changes since 0.7.4

• 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).

• 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

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

• 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)

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

• 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).

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

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

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)

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

• 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

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

• Lua 5.4 support with MetaMethod::Close.
• lua53 feature is disabled by default. Now preferred Lua version have to be chosen explicitly.
• Provide safety guarantees for Lua state, which means that potentially unsafe operations, like loading C modules (using require or package.loadlib) are disabled. Equivalent to 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.