Function GetStackVariables

Plugins/UnLua/Source/UnLua/Private/UnLuaDebugBase.cpp:605–661

    bool GetStackVariables(lua_State *L, int32 StackLevel, TArray<FLuaVariable> &LocalVariables, TArray<FLuaVariable> &Upvalues, int32 Level)
    {
        if (!L)
        {
            return false;
        }
        lua_Debug ar;
        if (!lua_getstack(L, StackLevel, &ar))
        {
            return false;
        }
        if (!lua_getinfo(L, "nSlu", &ar))
        {
            return false;
        }

        for (int32 i = 1; ; ++i)
        {
            const char *VarName = lua_getlocal(L, &ar, i);
            if (!VarName)
            {
                break;
            }
            if (VarName[0] == '(')
            {
                lua_pop(L, 1);
                continue;
            }
            LocalVariables.AddDefaulted();
            FLuaVariable &Variable = LocalVariables.Top();
            Variable.Key = UTF8_TO_TCHAR(VarName);
            Variable.Value.Depth = 0;
            Variable.Value.Build(L, -1, Level);
            lua_pop(L, 1);
        }

        if (lua_getinfo(L, "f", &ar))
        {
            int32 FunctionIdx = lua_gettop(L);
            for (int32 i = 1; ; ++i)
            {
                const char *UpvalueName = lua_getupvalue(L, FunctionIdx, i);
                if (!UpvalueName)
                {
                    break;
                }
                Upvalues.AddDefaulted();
                FLuaVariable &Upvalue = Upvalues.Top();
                Upvalue.Key = UTF8_TO_TCHAR(UpvalueName);
                Upvalue.Value.Depth = 0;
                Upvalue.Value.Build(L, -1, Level);
                lua_pop(L, 1);
            }
        }

        return true;
    }