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Diffstat (limited to 'source/LuaState.h')
| -rw-r--r-- | source/LuaState.h | 811 |
1 files changed, 0 insertions, 811 deletions
diff --git a/source/LuaState.h b/source/LuaState.h deleted file mode 100644 index caba2484d..000000000 --- a/source/LuaState.h +++ /dev/null @@ -1,811 +0,0 @@ - -// LuaState.h - -// Declares the cLuaState class representing the wrapper over lua_State *, provides associated helper functions - -/* -The contained lua_State can be either owned or attached. -Owned lua_State is created by calling Create() and the cLuaState automatically closes the state -Or, lua_State can be attached by calling Attach(), the cLuaState doesn't close such a state -Attaching a state will automatically close an owned state. - -Calling a Lua function is done by pushing the function, either by PushFunction() or PushFunctionFromRegistry(), -then pushing the arguments (PushString(), PushNumber(), PushUserData() etc.) and finally -executing CallFunction(). cLuaState automatically keeps track of the number of arguments and the name of the -function (for logging purposes), which makes the call less error-prone. - -Reference management is provided by the cLuaState::cRef class. This is used when you need to hold a reference to -any Lua object across several function calls; usually this is used for callbacks. The class is RAII-like, with -automatic resource management. -*/ - - - - -#pragma once - -extern "C" -{ - #include "lauxlib.h" -} - - - - - -class cWorld; -class cPlayer; -class cEntity; -class cMonster; -class cItem; -class cItems; -class cClientHandle; -class cPickup; -class cChunkDesc; -class cCraftingGrid; -class cCraftingRecipe; -struct TakeDamageInfo; -class cWindow; -class cPluginLua; -struct HTTPRequest; -class cWebAdmin; -struct HTTPTemplateRequest; -class cTNTEntity; -class cCreeper; -class Vector3i; -class cHopperEntity; -class cBlockEntity; - - - - - -/// Encapsulates a Lua state and provides some syntactic sugar for common operations -class cLuaState -{ -public: - - /// Used for storing references to object in the global registry - class cRef - { - public: - /// Creates a reference in the specified LuaState for object at the specified StackPos - cRef(cLuaState & a_LuaState, int a_StackPos); - ~cRef(); - - /// Returns true if the reference is valid - bool IsValid(void) const {return (m_Ref != LUA_REFNIL); } - - /// Allows to use this class wherever an int (i. e. ref) is to be used - operator int(void) const { return m_Ref; } - - protected: - cLuaState & m_LuaState; - int m_Ref; - } ; - - - /// A dummy class that's used only to delimit function args from return values for cLuaState::Call() - class cRet - { - } ; - - static const cRet Return; // Use this constant to delimit function args from return values for cLuaState::Call() - - - /** Creates a new instance. The LuaState is not initialized. - a_SubsystemName is used for reporting problems in the console, it is "plugin %s" for plugins, - or "LuaScript" for the cLuaScript template - */ - cLuaState(const AString & a_SubsystemName); - - /** Creates a new instance. The a_AttachState is attached. - Subsystem name is set to "<attached>". - */ - explicit cLuaState(lua_State * a_AttachState); - - ~cLuaState(); - - /// Allows this object to be used in the same way as a lua_State *, for example in the LuaLib functions - operator lua_State * (void) { return m_LuaState; } - - /// Creates the m_LuaState, if not closed already. This state will be automatically closed in the destructor - void Create(void); - - /// Closes the m_LuaState, if not closed already - void Close(void); - - /// Attaches the specified state. Operations will be carried out on this state, but it will not be closed in the destructor - void Attach(lua_State * a_State); - - /// Detaches a previously attached state. - void Detach(void); - - /// Returns true if the m_LuaState is valid - bool IsValid(void) const { return (m_LuaState != NULL); } - - /** Loads the specified file - Returns false and logs a warning to the console if not successful (but the LuaState is kept open). - m_SubsystemName is displayed in the warning log message. - */ - bool LoadFile(const AString & a_FileName); - - /// Returns true if a_FunctionName is a valid Lua function that can be called - bool HasFunction(const char * a_FunctionName); - - /** Pushes the function of the specified name onto the stack. - Returns true if successful. Logs a warning on failure (incl. m_SubsystemName) - */ - bool PushFunction(const char * a_FunctionName); - - /** Pushes a function that has been saved into the global registry, identified by a_FnRef. - Returns true if successful. Logs a warning on failure - */ - bool PushFunction(int a_FnRef); - - /** Pushes a function that is stored in a table ref. - Returns true if successful, false on failure. Doesn't log failure. - */ - bool PushFunctionFromRefTable(cRef & a_TableRef, const char * a_FnName); - - /// Pushes a usertype of the specified class type onto the stack - void PushUserType(void * a_Object, const char * a_Type); - - // Push a value onto the stack - void Push(const AString & a_String); - void Push(const AStringVector & a_Vector); - void Push(int a_Value); - void Push(double a_Value); - void Push(const char * a_Value); - void Push(bool a_Value); - void Push(cWorld * a_World); - void Push(cPlayer * a_Player); - void Push(const cPlayer * a_Player); - void Push(cEntity * a_Entity); - void Push(cMonster * a_Monster); - void Push(cItem * a_Item); - void Push(cItems * a_Items); - void Push(cClientHandle * a_ClientHandle); - void Push(cPickup * a_Pickup); - void Push(cChunkDesc * a_ChunkDesc); - void Push(const cCraftingGrid * a_Grid); - void Push(const cCraftingRecipe * a_Recipe); - void Push(TakeDamageInfo * a_TDI); - void Push(cWindow * a_Window); - void Push(cPluginLua * a_Plugin); - void Push(const HTTPRequest * a_Request); - void Push(cWebAdmin * a_WebAdmin); - void Push(const HTTPTemplateRequest * a_Request); - void Push(cTNTEntity * a_TNTEntity); - void Push(cCreeper * a_Creeper); - void Push(Vector3i * a_Vector); - void Push(void * a_Ptr); - void Push(cHopperEntity * a_Hopper); - void Push(cBlockEntity * a_BlockEntity); - - /// Call any 0-param 0-return Lua function in a single line: - template <typename FnT> - bool Call(FnT a_FnName) - { - if (!PushFunction(a_FnName)) - { - return false; - } - return CallFunction(0); - } - - /// Call any 1-param 0-return Lua function in a single line: - template< - typename FnT, - typename ArgT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - return CallFunction(0); - } - - /// Call any 2-param 0-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - return CallFunction(0); - } - - /// Call any 1-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 2-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 3-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 4-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 5-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 6-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6, - typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 7-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6, - typename ArgT7, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 8-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6, - typename ArgT7, typename ArgT8, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - Push(a_Arg8); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 9-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6, - typename ArgT7, typename ArgT8, typename ArgT9, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - Push(a_Arg8); - Push(a_Arg9); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 10-param 1-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6, - typename ArgT7, typename ArgT8, typename ArgT9, typename ArgT10, typename RetT1 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, ArgT10 a_Arg10, const cRet & a_Mark, RetT1 & a_Ret1) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - Push(a_Arg8); - Push(a_Arg9); - Push(a_Arg10); - if (!CallFunction(1)) - { - return false; - } - GetReturn(-1, a_Ret1); - lua_pop(m_LuaState, 1); - return true; - } - - /// Call any 1-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 2-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 3-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, - typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 4-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, - typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 5-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 6-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename ArgT6, - typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 7-param 2-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename ArgT6, typename ArgT7, - typename RetT1, typename RetT2 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - if (!CallFunction(2)) - { - return false; - } - GetReturn(-2, a_Ret1); - GetReturn(-1, a_Ret2); - lua_pop(m_LuaState, 2); - return true; - } - - /// Call any 7-param 3-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename ArgT6, typename ArgT7, - typename RetT1, typename RetT2, typename RetT3 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - if (!CallFunction(3)) - { - return false; - } - GetReturn(-3, a_Ret1); - GetReturn(-2, a_Ret2); - GetReturn(-1, a_Ret3); - lua_pop(m_LuaState, 3); - return true; - } - - /// Call any 8-param 3-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename ArgT6, typename ArgT7, typename ArgT8, - typename RetT1, typename RetT2, typename RetT3 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - Push(a_Arg8); - if (!CallFunction(3)) - { - return false; - } - GetReturn(-3, a_Ret1); - GetReturn(-2, a_Ret2); - GetReturn(-1, a_Ret3); - lua_pop(m_LuaState, 3); - return true; - } - - /// Call any 9-param 5-return Lua function in a single line: - template< - typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, - typename ArgT6, typename ArgT7, typename ArgT8, typename ArgT9, - typename RetT1, typename RetT2, typename RetT3, typename RetT4, typename RetT5 - > - bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3, RetT4 & a_Ret4, RetT5 & a_Ret5) - { - if (!PushFunction(a_FnName)) - { - return false; - } - Push(a_Arg1); - Push(a_Arg2); - Push(a_Arg3); - Push(a_Arg4); - Push(a_Arg5); - Push(a_Arg6); - Push(a_Arg7); - Push(a_Arg8); - Push(a_Arg9); - if (!CallFunction(5)) - { - return false; - } - GetReturn(-5, a_Ret1); - GetReturn(-4, a_Ret2); - GetReturn(-3, a_Ret3); - GetReturn(-2, a_Ret4); - GetReturn(-1, a_Ret5); - lua_pop(m_LuaState, 5); - return true; - } - - - /// Retrieve value returned at a_StackPos, if it is a valid bool. If not, a_ReturnedVal is unchanged - void GetReturn(int a_StackPos, bool & a_ReturnedVal); - - /// Retrieve value returned at a_StackPos, if it is a valid string. If not, a_ReturnedVal is unchanged - void GetReturn(int a_StackPos, AString & a_ReturnedVal); - - /// Retrieve value returned at a_StackPos, if it is a valid number. If not, a_ReturnedVal is unchanged - void GetReturn(int a_StackPos, int & a_ReturnedVal); - - /// Retrieve value returned at a_StackPos, if it is a valid number. If not, a_ReturnedVal is unchanged - void GetReturn(int a_StackPos, double & a_ReturnedVal); - - /** - Calls the function that has been pushed onto the stack by PushFunction(), - with arguments pushed by PushXXX(). - Returns true if successful, logs a warning on failure. - */ - bool CallFunction(int a_NumReturnValues); - - /// Returns true if the specified parameters on the stack are of the specified usertype; also logs warning if not - bool CheckParamUserType(int a_StartParam, const char * a_UserType, int a_EndParam = -1); - - /// Returns true if the specified parameters on the stack are a table; also logs warning if not - bool CheckParamTable(int a_StartParam, int a_EndParam = -1); - - /// Returns true if the specified parameters on the stack are a number; also logs warning if not - bool CheckParamNumber(int a_StartParam, int a_EndParam = -1); - - /// Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters) - bool CheckParamEnd(int a_Param); - - /// If the status is nonzero, prints the text on the top of Lua stack and returns true - bool ReportErrors(int status); - - /// If the status is nonzero, prints the text on the top of Lua stack and returns true - static bool ReportErrors(lua_State * a_LuaState, int status); - - /// Logs all items in the current stack trace to the server console - void LogStackTrace(void); - - /// Returns the type of the item on the specified position in the stack - AString GetTypeText(int a_StackPos); - -protected: - lua_State * m_LuaState; - - /// If true, the state is owned by this object and will be auto-Closed. False => attached state - bool m_IsOwned; - - /** The subsystem name is used for reporting errors to the console, it is either "plugin %s" or "LuaScript" - whatever is given to the constructor - */ - AString m_SubsystemName; - - /// Name of the currently pushed function (for the Push / Call chain) - AString m_CurrentFunctionName; - - /// Number of arguments currently pushed (for the Push / Call chain) - int m_NumCurrentFunctionArgs; -} ; - - - - |