From 78f4a99830cd68c2508b228b2040c919d04c81a7 Mon Sep 17 00:00:00 2001
From: pilaoda <793493083@qq.com>
Date: Tue, 26 Aug 2025 00:07:20 +0800
Subject: [PATCH 1/2] add lua_call, lua_callk api

---
 scripts/build.sh       | 4 ++++
 src/binding-factory.ts | 8 ++++++++
 src/lua.ts             | 2 ++
 3 files changed, 14 insertions(+)

diff --git a/scripts/build.sh b/scripts/build.sh
index 1a81c68..39868a6 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -30,6 +30,7 @@ if [[ "$1" == "lua-5.0.3" ]]; then
         -s WASM_ASYNC_COMPILATION=0 \
         -s EXPORTED_FUNCTIONS="[
         '_luaL_loadbuffer', \
+        '_lua_call', \
         '_lua_close', \
         '_lua_gettable', \
         '_lua_gettop', \
@@ -69,6 +70,7 @@ elif [[ "$1" == "lua-5.1.5" ]]; then
         '_luaL_openlibs', \
         '_luaL_loadbuffer', \
         '_luaL_loadstring', \
+		'_lua_call', \
         '_lua_close', \
         '_lua_getfield', \
         '_lua_gettable', \
@@ -108,6 +110,7 @@ elif [[ "$1" == "lua-5.2.4" ]]; then
         '_luaL_newstate', \
         '_luaL_openlibs', \
         '_luaL_loadstring', \
+		'_lua_callk', \
         '_lua_close', \
         '_lua_getfield', \
         '_lua_getglobal', \
@@ -148,6 +151,7 @@ else
         '_luaL_newstate', \
         '_luaL_openlibs', \
         '_luaL_loadstring', \
+		'_lua_callk', \
         '_lua_close', \
         '_lua_copy', \
         '_lua_getfield', \
diff --git a/src/binding-factory.ts b/src/binding-factory.ts
index ca5e49b..a014d19 100644
--- a/src/binding-factory.ts
+++ b/src/binding-factory.ts
@@ -68,6 +68,10 @@ const luaBindings: Record<string, luaBindingFactoryFunc> = {
     },
     "<=5.1.x": function(luaGlue: LuaEmscriptenModule){
         return {
+			lua_call: luaGlue.cwrap("lua_call", "number", ["number", "number", "number"]),
+			lua_callk: function (_L: LuaState, _nargs: number, _nresults: number, _ctx: number, _k: number) {
+				throw "callk not supported with Lua 5.1 and lower";
+			},
             // Need to overwrite because in lua 5.1 this is a function and not a #define (5.2 and higher)
             lua_pcall: luaGlue.cwrap("lua_pcall", "number", ["number", "number", "number", "number"]),
             // TODO there might be some way to mimic pcallk behaviour with 5.1 somehow
@@ -78,6 +82,10 @@ const luaBindings: Record<string, luaBindingFactoryFunc> = {
     },
     ">=5.1.0": function(luaGlue: LuaEmscriptenModule){
         return {
+			lua_call: function (L: LuaState, nargs: number, nresults: number) {
+				return (this as Lua).lua_callk(L, nargs, nresults, 0, 0);
+			},
+			lua_callk: luaGlue.cwrap("lua_callk", "number", ["number", "number", "number", "number", "number"]),
             lua_getfield: luaGlue.cwrap("lua_getfield", "number", ["number", "number", "string"]),
             lua_setfield: luaGlue.cwrap("lua_setfield", null, ["number", "number", "string"]),
             // TODO 3rd param is a output param (currently ignored)
diff --git a/src/lua.ts b/src/lua.ts
index c27b7d7..deb1f8f 100644
--- a/src/lua.ts
+++ b/src/lua.ts
@@ -22,6 +22,8 @@ export const LUA_ERRMEM = 4;
 export const LUA_ERRERR = 5;
 
 export interface Lua {
+    lua_call(L: LuaState, nargs: number, nresults: number): number;
+	lua_callk(L: LuaState, nargs: number, nresults: number, ctx: number, k: number): number;
     lua_close(L: LuaState): void;
     lua_copy(L: LuaState, fromIndex: number, toIndex: number): void;
     // TODO returns int in some lua versions void in others

From 3fa39f7d464717677b201761e0a494e3192c72ff Mon Sep 17 00:00:00 2001
From: pilaoda <793493083@qq.com>
Date: Tue, 26 Aug 2025 00:15:43 +0800
Subject: [PATCH 2/2] fix duplicate lua_call binding for 5.1

---
 src/binding-factory.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/binding-factory.ts b/src/binding-factory.ts
index a014d19..59d22cb 100644
--- a/src/binding-factory.ts
+++ b/src/binding-factory.ts
@@ -82,10 +82,6 @@ const luaBindings: Record<string, luaBindingFactoryFunc> = {
     },
     ">=5.1.0": function(luaGlue: LuaEmscriptenModule){
         return {
-			lua_call: function (L: LuaState, nargs: number, nresults: number) {
-				return (this as Lua).lua_callk(L, nargs, nresults, 0, 0);
-			},
-			lua_callk: luaGlue.cwrap("lua_callk", "number", ["number", "number", "number", "number", "number"]),
             lua_getfield: luaGlue.cwrap("lua_getfield", "number", ["number", "number", "string"]),
             lua_setfield: luaGlue.cwrap("lua_setfield", null, ["number", "number", "string"]),
             // TODO 3rd param is a output param (currently ignored)
@@ -98,6 +94,10 @@ const luaBindings: Record<string, luaBindingFactoryFunc> = {
     },
     ">=5.2.0": function(luaGlue: LuaEmscriptenModule){
         return {
+			lua_call: function (L: LuaState, nargs: number, nresults: number) {
+				return (this as Lua).lua_callk(L, nargs, nresults, 0, 0);
+			},
+			lua_callk: luaGlue.cwrap("lua_callk", "number", ["number", "number", "number", "number", "number"]),
             lua_getglobal: luaGlue.cwrap("lua_getglobal", "number", ["number", "string"]),
             lua_pcall: function (L: LuaState, nargs: number, nresults: number, msgh: number) {
                 return (this as Lua).lua_pcallk(L, nargs, nresults, msgh, 0, 0);