From 50a07d1b5db353a291afc421b3d8b0ba7e905813 Mon Sep 17 00:00:00 2001
From: Srlion <srlion32@gmail.com>
Date: Tue, 21 Sep 2021 19:35:28 +0200
Subject: [PATCH] Add luaL_newstate

---
 gmod/src/lua/import.rs    |  4 ++++
 gmod/src/lua/lua_state.rs | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/gmod/src/lua/import.rs b/gmod/src/lua/import.rs
index d2de566..afff2a7 100644
--- a/gmod/src/lua/import.rs
+++ b/gmod/src/lua/import.rs
@@ -75,6 +75,8 @@ lazy_static::lazy_static! {
 }
 
 pub(crate) struct LuaShared {
+	pub lual_newstate: Symbol<'static, unsafe extern "C-unwind" fn() -> LuaState>,
+	pub lual_openlibs: Symbol<'static, unsafe extern "C-unwind" fn(state: LuaState)>,
 	pub lual_loadfile: Symbol<'static, unsafe extern "C-unwind" fn(state: LuaState, path: LuaString) -> i32>,
 	pub lual_loadstring: Symbol<'static, unsafe extern "C-unwind" fn(state: LuaState, path: LuaString) -> i32>,
 	pub lual_loadbuffer: Symbol<'static, unsafe extern "C-unwind" fn(state: LuaState, buff: LuaString, sz: LuaSize, name: LuaString) -> i32>,
@@ -137,6 +139,8 @@ impl LuaShared {
 			}
 
 			Self {
+				lual_newstate: find_symbol!("luaL_newstate"),
+				lual_openlibs: find_symbol!("luaL_openlibs"),
 				lua_pushlightuserdata: find_symbol!("lua_pushlightuserdata"),
 				lual_checktype: find_symbol!("luaL_checktype"),
 				lual_loadfile: find_symbol!("luaL_loadfile"),
diff --git a/gmod/src/lua/lua_state.rs b/gmod/src/lua/lua_state.rs
index 93ec317..d9342ef 100644
--- a/gmod/src/lua/lua_state.rs
+++ b/gmod/src/lua/lua_state.rs
@@ -9,6 +9,16 @@ use crate::userdata::TaggedUserData;
 pub struct LuaState(pub *mut std::ffi::c_void);
 unsafe impl Send for LuaState {}
 impl LuaState {
+	pub unsafe fn new() -> Result<Self, LuaError> {
+		let lua = (LUA_SHARED.lual_newstate)();
+		(LUA_SHARED.lual_openlibs)(lua);
+		if lua.is_null() {
+			Err(LuaError::MemoryAllocationError)
+		} else {
+			Ok(lua)
+		}
+	}
+
 	/// Returns the Lua string as a slice of bytes.
 	///
 	/// **WARNING:** This will CHANGE the type of the value at the given index to a string.