Support Luau 0.650 native vector library

Author: khvzak

src/luau/mod.rs

@@ -1,5 +1,5 @@
 use std::ffi::CStr;
-use std::os::raw::{c_float, c_int};
+use std::os::raw::c_int;
 
 use crate::error::Result;
 use crate::state::Lua;
@@ -11,7 +11,6 @@ impl Lua {
         let globals = self.globals();
 
         globals.raw_set("collectgarbage", self.create_c_function(lua_collectgarbage)?)?;
-        globals.raw_set("vector", self.create_c_function(lua_vector)?)?;
 
         // Set `_VERSION` global to include version number
         // The environment variable `LUAU_VERSION` set by the build script
@@ -65,21 +64,6 @@ unsafe extern "C-unwind" fn lua_collectgarbage(state: *mut ffi::lua_State) -> c_
     }
 }
 
-// Luau vector datatype constructor
-unsafe extern "C-unwind" fn lua_vector(state: *mut ffi::lua_State) -> c_int {
-    let x = ffi::luaL_checknumber(state, 1) as c_float;
-    let y = ffi::luaL_checknumber(state, 2) as c_float;
-    let z = ffi::luaL_checknumber(state, 3) as c_float;
-    #[cfg(feature = "luau-vector4")]
-    let w = ffi::luaL_checknumber(state, 4) as c_float;
-
-    #[cfg(not(feature = "luau-vector4"))]
-    ffi::lua_pushvector(state, x, y, z);
-    #[cfg(feature = "luau-vector4")]
-    ffi::lua_pushvector(state, x, y, z, w);
-    1
-}
-
 pub(crate) use package::register_package_module;
 
 mod package;

src/state/raw.rs

@@ -1347,6 +1347,12 @@ unsafe fn load_std_libs(state: *mut ffi::lua_State, libs: StdLib) -> Result<()>
         ffi::lua_pop(state, 1);
     }
 
+    #[cfg(feature = "luau")]
+    if libs.contains(StdLib::VECTOR) {
+        requiref(state, ffi::LUA_VECLIBNAME, ffi::luaopen_vector, 1)?;
+        ffi::lua_pop(state, 1);
+    }
+
     if libs.contains(StdLib::MATH) {
         requiref(state, ffi::LUA_MATHLIBNAME, ffi::luaopen_math, 1)?;
         ffi::lua_pop(state, 1);
@@ -1369,16 +1375,15 @@ unsafe fn load_std_libs(state: *mut ffi::lua_State, libs: StdLib) -> Result<()>
     }
 
     #[cfg(feature = "luajit")]
-    {
-        if libs.contains(StdLib::JIT) {
-            requiref(state, ffi::LUA_JITLIBNAME, ffi::luaopen_jit, 1)?;
-            ffi::lua_pop(state, 1);
-        }
+    if libs.contains(StdLib::JIT) {
+        requiref(state, ffi::LUA_JITLIBNAME, ffi::luaopen_jit, 1)?;
+        ffi::lua_pop(state, 1);
+    }
 
-        if libs.contains(StdLib::FFI) {
-            requiref(state, ffi::LUA_FFILIBNAME, ffi::luaopen_ffi, 1)?;
-            ffi::lua_pop(state, 1);
-        }
+    #[cfg(feature = "luajit")]
+    if libs.contains(StdLib::FFI) {
+        requiref(state, ffi::LUA_FFILIBNAME, ffi::luaopen_ffi, 1)?;
+        ffi::lua_pop(state, 1);
     }
 
     Ok(())

src/stdlib.rs

@@ -48,12 +48,17 @@ impl StdLib {
     #[cfg_attr(docsrs, doc(cfg(feature = "luau")))]
     pub const BUFFER: StdLib = StdLib(1 << 9);
 
+    /// [`vector`](https://luau-lang.org/library#vector-library) library
+    #[cfg(any(feature = "luau", doc))]
+    #[cfg_attr(docsrs, doc(cfg(feature = "luau")))]
+    pub const VECTOR: StdLib = StdLib(1 << 10);
+
     /// [`jit`](http://luajit.org/ext_jit.html) library
     ///
     /// Requires `feature = "luajit"`
     #[cfg(any(feature = "luajit", doc))]
     #[cfg_attr(docsrs, doc(cfg(feature = "luajit")))]
-    pub const JIT: StdLib = StdLib(1 << 9);
+    pub const JIT: StdLib = StdLib(1 << 11);
 
     /// (**unsafe**) [`ffi`](http://luajit.org/ext_ffi.html) library
     ///

tests/luau.rs

@@ -97,17 +97,19 @@ fn test_require() -> Result<()> {
 fn test_vectors() -> Result<()> {
     let lua = Lua::new();
 
-    let v: Vector = lua.load("vector(1, 2, 3) + vector(3, 2, 1)").eval()?;
+    let v: Vector = lua
+        .load("vector.create(1, 2, 3) + vector.create(3, 2, 1)")
+        .eval()?;
     assert_eq!(v, [4.0, 4.0, 4.0]);
 
     // Test conversion into Rust array
-    let v: [f64; 3] = lua.load("vector(1, 2, 3)").eval()?;
+    let v: [f64; 3] = lua.load("vector.create(1, 2, 3)").eval()?;
     assert!(v == [1.0, 2.0, 3.0]);
 
     // Test vector methods
     lua.load(
         r#"
-        local v = vector(1, 2, 3)
+        local v = vector.create(1, 2, 3)
         assert(v.x == 1)
         assert(v.y == 2)
         assert(v.z == 3)
@@ -118,7 +120,7 @@ fn test_vectors() -> Result<()> {
     // Test vector methods (fastcall)
     lua.load(
         r#"
-        local v = vector(1, 2, 3)
+        local v = vector.create(1, 2, 3)
         assert(v.x == 1)
         assert(v.y == 2)
         assert(v.z == 3)
@@ -135,17 +137,19 @@ fn test_vectors() -> Result<()> {
 fn test_vectors() -> Result<()> {
     let lua = Lua::new();
 
-    let v: Vector = lua.load("vector(1, 2, 3, 4) + vector(4, 3, 2, 1)").eval()?;
+    let v: Vector = lua
+        .load("vector.create(1, 2, 3, 4) + vector.create(4, 3, 2, 1)")
+        .eval()?;
     assert_eq!(v, [5.0, 5.0, 5.0, 5.0]);
 
     // Test conversion into Rust array
-    let v: [f64; 4] = lua.load("vector(1, 2, 3, 4)").eval()?;
+    let v: [f64; 4] = lua.load("vector.create(1, 2, 3, 4)").eval()?;
     assert!(v == [1.0, 2.0, 3.0, 4.0]);
 
     // Test vector methods
     lua.load(
         r#"
-        local v = vector(1, 2, 3, 4)
+        local v = vector.create(1, 2, 3, 4)
         assert(v.x == 1)
         assert(v.y == 2)
         assert(v.z == 3)
@@ -157,7 +161,7 @@ fn test_vectors() -> Result<()> {
     // Test vector methods (fastcall)
     lua.load(
         r#"
-        local v = vector(1, 2, 3, 4)
+        local v = vector.create(1, 2, 3, 4)
         assert(v.x == 1)
         assert(v.y == 2)
         assert(v.z == 3)
@@ -180,10 +184,10 @@ fn test_vector_metatable() -> Result<()> {
             r#"
             {
                 __index = {
-                    new = vector,
+                    new = vector.create,
 
                     product = function(a, b)
-                        return vector(a.x * b.x, a.y * b.y, a.z * b.z)
+                        return vector.create(a.x * b.x, a.y * b.y, a.z * b.z)
                     end
                 }
             }

tests/serde.rs

@@ -133,13 +133,7 @@ fn test_serialize_failure() -> Result<(), Box<dyn StdError>> {
 fn test_serialize_vector() -> Result<(), Box<dyn StdError>> {
     let lua = Lua::new();
 
-    let globals = lua.globals();
-    globals.set(
-        "vector",
-        lua.create_function(|_, (x, y, z)| Ok(mlua::Vector::new(x, y, z)))?,
-    )?;
-
-    let val = lua.load("{_vector = vector(1, 2, 3)}").eval::<Value>()?;
+    let val = lua.load("{_vector = vector.create(1, 2, 3)}").eval::<Value>()?;
     let json = serde_json::json!({
         "_vector": [1.0, 2.0, 3.0],
     });
@@ -156,13 +150,9 @@ fn test_serialize_vector() -> Result<(), Box<dyn StdError>> {
 fn test_serialize_vector() -> Result<(), Box<dyn StdError>> {
     let lua = Lua::new();
 
-    let globals = lua.globals();
-    globals.set(
-        "vector",
-        lua.create_function(|_, (x, y, z, w)| Ok(mlua::Vector::new(x, y, z, w)))?,
-    )?;
-
-    let val = lua.load("{_vector = vector(1, 2, 3, 4)}").eval::<Value>()?;
+    let val = lua
+        .load("{_vector = vector.create(1, 2, 3, 4)}")
+        .eval::<Value>()?;
     let json = serde_json::json!({
         "_vector": [1.0, 2.0, 3.0, 4.0],
     });