diff options
Diffstat (limited to '')
| -rw-r--r-- | src/Bindings/LuaState.cpp | 199 | ||||
| -rw-r--r-- | src/Bindings/LuaState.h | 143 | ||||
| -rw-r--r-- | src/Bindings/ManualBindings.cpp | 196 | ||||
| -rw-r--r-- | src/Bindings/PluginLua.cpp | 34 | ||||
| -rw-r--r-- | src/Bindings/PluginLua.h | 42 | ||||
| -rw-r--r-- | src/Bindings/PluginManager.cpp | 15 | ||||
| -rw-r--r-- | src/Bindings/PluginManager.h | 56 |
7 files changed, 471 insertions, 214 deletions
diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp index bfee1d037..2fca7142c 100644 --- a/src/Bindings/LuaState.cpp +++ b/src/Bindings/LuaState.cpp @@ -235,7 +235,7 @@ bool cLuaState::PushFunction(const char * a_FunctionName) if (!lua_isfunction(m_LuaState, -1)) { LOGWARNING("Error in %s: Could not find function %s()", m_SubsystemName.c_str(), a_FunctionName); - lua_pop(m_LuaState, 1); + lua_pop(m_LuaState, 2); return false; } m_CurrentFunctionName.assign(a_FunctionName); @@ -258,7 +258,7 @@ bool cLuaState::PushFunction(int a_FnRef) lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, a_FnRef); // same as lua_getref() if (!lua_isfunction(m_LuaState, -1)) { - lua_pop(m_LuaState, 1); + lua_pop(m_LuaState, 2); return false; } m_CurrentFunctionName = "<callback>"; @@ -282,7 +282,7 @@ bool cLuaState::PushFunction(const cTableRef & a_TableRef) if (!lua_istable(m_LuaState, -1)) { // Not a table, bail out - lua_pop(m_LuaState, 1); + lua_pop(m_LuaState, 2); return false; } lua_getfield(m_LuaState, -1, a_TableRef.GetFnName()); @@ -742,6 +742,10 @@ bool cLuaState::CallFunction(int a_NumResults) } m_NumCurrentFunctionArgs = -1; m_CurrentFunctionName.clear(); + + // Remove the error handler from the stack: + lua_remove(m_LuaState, -a_NumResults - 1); + return true; } @@ -1025,21 +1029,184 @@ void cLuaState::LogStackTrace(lua_State * a_LuaState) AString cLuaState::GetTypeText(int a_StackPos) { - int Type = lua_type(m_LuaState, a_StackPos); - switch (Type) + return lua_typename(m_LuaState, lua_type(m_LuaState, a_StackPos)); +} + + + + + +int cLuaState::CallFunctionWithForeignParams( + const AString & a_FunctionName, + cLuaState & a_SrcLuaState, + int a_SrcParamStart, + int a_SrcParamEnd +) +{ + ASSERT(IsValid()); + ASSERT(a_SrcLuaState.IsValid()); + + // Store the stack position before any changes + int OldTop = lua_gettop(m_LuaState); + + // Push the function to call, including the error handler: + if (!PushFunction(a_FunctionName.c_str())) + { + LOGWARNING("Function '%s' not found", a_FunctionName.c_str()); + lua_pop(m_LuaState, 2); + return -1; + } + + // Copy the function parameters to the target state + if (CopyStackFrom(a_SrcLuaState, a_SrcParamStart, a_SrcParamEnd) < 0) { - case LUA_TNONE: return "TNONE"; - case LUA_TNIL: return "TNIL"; - case LUA_TBOOLEAN: return "TBOOLEAN"; - case LUA_TLIGHTUSERDATA: return "TLIGHTUSERDATA"; - case LUA_TNUMBER: return "TNUMBER"; - case LUA_TSTRING: return "TSTRING"; - case LUA_TTABLE: return "TTABLE"; - case LUA_TFUNCTION: return "TFUNCTION"; - case LUA_TUSERDATA: return "TUSERDATA"; - case LUA_TTHREAD: return "TTHREAD"; + // Something went wrong, fix the stack and exit + lua_pop(m_LuaState, 2); + return -1; + } + + // Call the function, with an error handler: + int s = lua_pcall(m_LuaState, a_SrcParamEnd - a_SrcParamStart + 1, LUA_MULTRET, OldTop); + if (ReportErrors(s)) + { + LOGWARN("Error while calling function '%s' in '%s'", a_FunctionName.c_str(), m_SubsystemName.c_str()); + // Fix the stack. + // We don't know how many values have been pushed, so just get rid of any that weren't there initially + int CurTop = lua_gettop(m_LuaState); + if (CurTop > OldTop) + { + lua_pop(m_LuaState, CurTop - OldTop); + } + return -1; } - return Printf("Unknown (%d)", Type); + + // Reset the internal checking mechanisms: + m_NumCurrentFunctionArgs = -1; + + // Remove the error handler from the stack: + lua_remove(m_LuaState, OldTop + 1); + + // Return the number of return values: + return lua_gettop(m_LuaState) - OldTop; +} + + + + + +int cLuaState::CopyStackFrom(cLuaState & a_SrcLuaState, int a_SrcStart, int a_SrcEnd) +{ + /* + // DEBUG: + LOGD("Copying stack values from %d to %d", a_SrcStart, a_SrcEnd); + a_SrcLuaState.LogStack("Src stack before copying:"); + LogStack("Dst stack before copying:"); + */ + for (int i = a_SrcStart; i <= a_SrcEnd; ++i) + { + int t = lua_type(a_SrcLuaState, i); + switch (t) + { + case LUA_TNIL: + { + lua_pushnil(m_LuaState); + break; + } + case LUA_TSTRING: + { + AString s; + a_SrcLuaState.ToString(i, s); + Push(s); + break; + } + case LUA_TBOOLEAN: + { + bool b = (tolua_toboolean(a_SrcLuaState, i, false) != 0); + Push(b); + break; + } + case LUA_TNUMBER: + { + lua_Number d = tolua_tonumber(a_SrcLuaState, i, 0); + Push(d); + break; + } + case LUA_TUSERDATA: + { + // Get the class name: + const char * type = NULL; + if (lua_getmetatable(a_SrcLuaState, i) == 0) + { + LOGWARNING("%s: Unknown class in pos %d, cannot copy.", __FUNCTION__, i); + lua_pop(m_LuaState, i - a_SrcStart); + return -1; + } + lua_rawget(a_SrcLuaState, LUA_REGISTRYINDEX); // Stack +1 + type = lua_tostring(a_SrcLuaState, -1); + lua_pop(a_SrcLuaState, 1); // Stack -1 + + // Copy the value: + void * ud = tolua_touserdata(a_SrcLuaState, i, NULL); + tolua_pushusertype(m_LuaState, ud, type); + } + default: + { + LOGWARNING("%s: Unsupported value: '%s' at stack position %d. Can only copy numbers, strings, bools and classes!", + __FUNCTION__, lua_typename(a_SrcLuaState, t), i + ); + a_SrcLuaState.LogStack("Stack where copying failed:"); + lua_pop(m_LuaState, i - a_SrcStart); + return -1; + } + } + } + return a_SrcEnd - a_SrcStart + 1; +} + + + + + +void cLuaState::ToString(int a_StackPos, AString & a_String) +{ + size_t len; + const char * s = lua_tolstring(m_LuaState, a_StackPos, &len); + if (s != NULL) + { + a_String.assign(s, len); + } +} + + + + + +void cLuaState::LogStack(const char * a_Header) +{ + LogStack(m_LuaState, a_Header); +} + + + + + +void cLuaState::LogStack(lua_State * a_LuaState, const char * a_Header) +{ + LOGD((a_Header != NULL) ? a_Header : "Lua C API Stack contents:"); + for (int i = lua_gettop(a_LuaState); i >= 0; i--) + { + AString Value; + int Type = lua_type(a_LuaState, i); + switch (Type) + { + case LUA_TBOOLEAN: Value.assign((lua_toboolean(a_LuaState, i) != 0) ? "true" : "false"); break; + case LUA_TLIGHTUSERDATA: Printf(Value, "%p", lua_touserdata(a_LuaState, i)); break; + case LUA_TNUMBER: Printf(Value, "%f", (double)lua_tonumber(a_LuaState, i)); break; + case LUA_TSTRING: Printf(Value, "%s", lua_tostring(a_LuaState, i)); break; + default: break; + } + LOGD(" Idx %d: type %d (%s) %s", i, Type, lua_typename(a_LuaState, Type), Value.c_str()); + } // for i - stack idx } diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h index f8b67f5cd..dda45bb28 100644 --- a/src/Bindings/LuaState.h +++ b/src/Bindings/LuaState.h @@ -60,23 +60,23 @@ class cBlockEntity; -/// Encapsulates a Lua state and provides some syntactic sugar for common operations +/** 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 + /** 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 + /** 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 + /** 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 + /** Allows to use this class wherever an int (i. e. ref) is to be used */ operator int(void) const { return m_Ref; } protected: @@ -102,7 +102,7 @@ public: } ; - /// A dummy class that's used only to delimit function args from return values for cLuaState::Call() + /** A dummy class that's used only to delimit function args from return values for cLuaState::Call() */ class cRet { } ; @@ -123,22 +123,22 @@ public: ~cLuaState(); - /// Allows this object to be used in the same way as a lua_State *, for example in the LuaLib functions + /** 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 + /** 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 + /** 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 + /** 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. + /** Detaches a previously attached state. */ void Detach(void); - /// Returns true if the m_LuaState is valid + /** Returns true if the m_LuaState is valid */ bool IsValid(void) const { return (m_LuaState != NULL); } /** Loads the specified file @@ -147,7 +147,7 @@ public: */ bool LoadFile(const AString & a_FileName); - /// Returns true if a_FunctionName is a valid Lua function that can be called + /** Returns true if a_FunctionName is a valid Lua function that can be called */ bool HasFunction(const char * a_FunctionName); // Push a value onto the stack @@ -182,7 +182,7 @@ public: void Push(cHopperEntity * a_Hopper); void Push(cBlockEntity * a_BlockEntity); - /// Call any 0-param 0-return Lua function in a single line: + /** Call any 0-param 0-return Lua function in a single line: */ template <typename FnT> bool Call(FnT a_FnName) { @@ -193,7 +193,7 @@ public: return CallFunction(0); } - /// Call any 1-param 0-return Lua function in a single line: + /** Call any 1-param 0-return Lua function in a single line: */ template< typename FnT, typename ArgT1 @@ -208,7 +208,7 @@ public: return CallFunction(0); } - /// Call any 2-param 0-return Lua function in a single line: + /** Call any 2-param 0-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename ArgT2 > @@ -223,7 +223,7 @@ public: return CallFunction(0); } - /// Call any 3-param 0-return Lua function in a single line: + /** Call any 3-param 0-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename ArgT2, typename ArgT3 > @@ -239,7 +239,7 @@ public: return CallFunction(0); } - /// Call any 0-param 1-return Lua function in a single line: + /** Call any 0-param 1-return Lua function in a single line: */ template< typename FnT, typename RetT1 > @@ -259,12 +259,13 @@ public: return true; } - /// Call any 1-param 1-return Lua function in a single line: + /** 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) { + int InitialTop = lua_gettop(m_LuaState); UNUSED(a_Mark); if (!PushFunction(a_FnName)) { @@ -277,10 +278,11 @@ public: } GetReturn(-1, a_Ret1); lua_pop(m_LuaState, 1); + ASSERT(InitialTop == lua_gettop(m_LuaState)); return true; } - /// Call any 2-param 1-return Lua function in a single line: + /** Call any 2-param 1-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename ArgT2, typename RetT1 > @@ -302,7 +304,7 @@ public: return true; } - /// Call any 3-param 1-return Lua function in a single line: + /** Call any 3-param 1-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename RetT1 > @@ -325,7 +327,7 @@ public: return true; } - /// Call any 4-param 1-return Lua function in a single line: + /** 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 > @@ -349,7 +351,7 @@ public: return true; } - /// Call any 5-param 1-return Lua function in a single line: + /** 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 > @@ -374,7 +376,7 @@ public: return true; } - /// Call any 6-param 1-return Lua function in a single line: + /** 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 @@ -401,7 +403,7 @@ public: return true; } - /// Call any 7-param 1-return Lua function in a single line: + /** 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 @@ -429,7 +431,7 @@ public: return true; } - /// Call any 8-param 1-return Lua function in a single line: + /** 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 @@ -458,7 +460,7 @@ public: return true; } - /// Call any 9-param 1-return Lua function in a single line: + /** 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 @@ -488,7 +490,7 @@ public: return true; } - /// Call any 10-param 1-return Lua function in a single line: + /** 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 @@ -519,7 +521,7 @@ public: return true; } - /// Call any 1-param 2-return Lua function in a single line: + /** Call any 1-param 2-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename RetT1, typename RetT2 > @@ -541,7 +543,7 @@ public: return true; } - /// Call any 2-param 2-return Lua function in a single line: + /** Call any 2-param 2-return Lua function in a single line: */ template< typename FnT, typename ArgT1, typename ArgT2, typename RetT1, typename RetT2 > @@ -564,7 +566,7 @@ public: return true; } - /// Call any 3-param 2-return Lua function in a single line: + /** 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 @@ -589,7 +591,7 @@ public: return true; } - /// Call any 4-param 2-return Lua function in a single line: + /** 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 @@ -615,7 +617,7 @@ public: return true; } - /// Call any 5-param 2-return Lua function in a single line: + /** 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 @@ -642,7 +644,7 @@ public: return true; } - /// Call any 6-param 2-return Lua function in a single line: + /** 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, @@ -671,7 +673,7 @@ public: return true; } - /// Call any 7-param 2-return Lua function in a single line: + /** 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, @@ -701,7 +703,7 @@ public: return true; } - /// Call any 7-param 3-return Lua function in a single line: + /** 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, @@ -732,7 +734,7 @@ public: return true; } - /// Call any 8-param 3-return Lua function in a single line: + /** 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, @@ -764,7 +766,7 @@ public: return true; } - /// Call any 9-param 5-return Lua function in a single line: + /** 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, @@ -800,46 +802,71 @@ public: } - /// Returns true if the specified parameters on the stack are of the specified usertable type; also logs warning if not. Used for static functions + /** Returns true if the specified parameters on the stack are of the specified usertable type; also logs warning if not. Used for static functions */ bool CheckParamUserTable(int a_StartParam, const char * a_UserTable, int a_EndParam = -1); - /// Returns true if the specified parameters on the stack are of the specified usertype; also logs warning if not. Used for regular functions + /** Returns true if the specified parameters on the stack are of the specified usertype; also logs warning if not. Used for regular functions */ bool CheckParamUserType(int a_StartParam, const char * a_UserType, int a_EndParam = -1); - /// Returns true if the specified parameters on the stack are tables; also logs warning if not + /** Returns true if the specified parameters on the stack are tables; also logs warning if not */ bool CheckParamTable(int a_StartParam, int a_EndParam = -1); - /// Returns true if the specified parameters on the stack are numbers; also logs warning if not + /** Returns true if the specified parameters on the stack are numbers; also logs warning if not */ bool CheckParamNumber(int a_StartParam, int a_EndParam = -1); - /// Returns true if the specified parameters on the stack are strings; also logs warning if not + /** Returns true if the specified parameters on the stack are strings; also logs warning if not */ bool CheckParamString(int a_StartParam, int a_EndParam = -1); - /// Returns true if the specified parameters on the stack are functions; also logs warning if not + /** Returns true if the specified parameters on the stack are functions; also logs warning if not */ bool CheckParamFunction(int a_StartParam, int a_EndParam = -1); - /// Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters) + /** 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 + /** 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 + /** 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 + /** Logs all items in the current stack trace to the server console */ void LogStackTrace(void); - /// Logs all items in the current stack trace to the server console + /** Logs all items in the current stack trace to the server console */ static void LogStackTrace(lua_State * a_LuaState); - /// Returns the type of the item on the specified position in the stack + /** Returns the type of the item on the specified position in the stack */ AString GetTypeText(int a_StackPos); + /** Calls the function specified by its name, with arguments copied off the foreign state. + If successful, keeps the return values on the stack and returns their number. + If unsuccessful, returns a negative number and keeps the stack position unchanged. */ + int CallFunctionWithForeignParams( + const AString & a_FunctionName, + cLuaState & a_SrcLuaState, + int a_SrcParamStart, + int a_SrcParamEnd + ); + + /** Copies objects on the stack from the specified state. + Only numbers, bools, strings and userdatas are copied. + If successful, returns the number of objects copied. + If failed, returns a negative number and rewinds the stack position. */ + int CopyStackFrom(cLuaState & a_SrcLuaState, int a_SrcStart, int a_SrcEnd); + + /** Reads the value at the specified stack position as a string and sets it to a_String. */ + void ToString(int a_StackPos, AString & a_String); + + /** Logs all the elements' types on the API stack, with an optional header for the listing. */ + void LogStack(const char * a_Header); + + /** Logs all the elements' types on the API stack, with an optional header for the listing. */ + static void LogStack(lua_State * a_LuaState, const char * a_Header = NULL); + protected: lua_State * m_LuaState; - /// If true, the state is owned by this object and will be auto-Closed. False => attached state + /** 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" @@ -847,10 +874,10 @@ protected: */ AString m_SubsystemName; - /// Name of the currently pushed function (for the Push / Call chain) + /** Name of the currently pushed function (for the Push / Call chain) */ AString m_CurrentFunctionName; - /// Number of arguments currently pushed (for the Push / Call chain) + /** Number of arguments currently pushed (for the Push / Call chain) */ int m_NumCurrentFunctionArgs; @@ -869,19 +896,19 @@ protected: */ bool PushFunction(const cTableRef & a_TableRef); - /// Pushes a usertype of the specified class type onto the stack + /** Pushes a usertype of the specified class type onto the stack */ void PushUserType(void * a_Object, const char * a_Type); - /// Retrieve value returned at a_StackPos, if it is a valid bool. If not, a_ReturnedVal is unchanged + /** 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 + /** 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 + /** 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 + /** 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); /** diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp index 2206dd371..f1160f941 100644 --- a/src/Bindings/ManualBindings.cpp +++ b/src/Bindings/ManualBindings.cpp @@ -1540,6 +1540,85 @@ static int tolua_cPluginManager_BindConsoleCommand(lua_State * L) +static int tolua_cPluginManager_CallPlugin(lua_State * tolua_S) +{ + /* + Function signature: + cPluginManager:CallPlugin("PluginName", "FunctionName", args...) + */ + + // Check the parameters: + cLuaState L(tolua_S); + if ( + !L.CheckParamUserTable(1, "cPluginManager") || + !L.CheckParamString(2, 3)) + { + return 0; + } + + // Retrieve the plugin name and function name + AString PluginName, FunctionName; + L.ToString(2, PluginName); + L.ToString(3, FunctionName); + if (PluginName.empty() || FunctionName.empty()) + { + LOGWARNING("cPluginManager:CallPlugin(): Invalid plugin name or function name"); + L.LogStackTrace(); + return 0; + } + + // If requesting calling the current plugin, refuse: + cPluginLua * ThisPlugin = GetLuaPlugin(L); + if (ThisPlugin == NULL) + { + return 0; + } + if (ThisPlugin->GetName() == PluginName) + { + LOGWARNING("cPluginManager::CallPlugin(): Calling self is not implemented (why would it?)"); + L.LogStackTrace(); + return 0; + } + + // Call the destination plugin using a plugin callback: + class cCallback : + public cPluginManager::cPluginCallback + { + public: + int m_NumReturns; + + cCallback(const AString & a_FunctionName, cLuaState & a_SrcLuaState) : + m_FunctionName(a_FunctionName), + m_SrcLuaState(a_SrcLuaState), + m_NumReturns(0) + { + } + protected: + const AString & m_FunctionName; + cLuaState & m_SrcLuaState; + + virtual bool Item(cPlugin * a_Plugin) override + { + m_NumReturns = ((cPluginLua *)a_Plugin)->CallFunctionFromForeignState( + m_FunctionName, m_SrcLuaState, 4, lua_gettop(m_SrcLuaState) + ); + return true; + } + } Callback(FunctionName, L); + if (!cPluginManager::Get()->DoWithPlugin(PluginName, Callback)) + { + // TODO 2014_01_20 _X: This might be too much logging, plugins cannot know if other plugins are loaded (async) + LOGWARNING("cPluginManager::CallPlugin: No such plugin name (\"%s\")", PluginName.c_str()); + L.LogStackTrace(); + return 0; + } + return Callback.m_NumReturns; +} + + + + + static int tolua_cPlayer_GetGroups(lua_State* tolua_S) { cPlayer* self = (cPlayer*) tolua_tousertype(tolua_S,1,0); @@ -1734,112 +1813,28 @@ static int tolua_cPluginLua_AddTab(lua_State* tolua_S) -// Perhaps use this as well for copying tables https://github.com/keplerproject/rings/pull/1 -static int copy_lua_values(lua_State * a_Source, lua_State * a_Destination, int i, int top) -{ - for(; i <= top; ++i ) - { - int t = lua_type(a_Source, i); - switch (t) { - case LUA_TSTRING: /* strings */ - { - const char * s = lua_tostring(a_Source, i); - LOGD("%i push string: %s", i, s); - tolua_pushstring(a_Destination, s); - } - break; - case LUA_TBOOLEAN: /* booleans */ - { - int b = tolua_toboolean(a_Source, i, false); - LOGD("%i push bool: %i", i, b); - tolua_pushboolean(a_Destination, b ); - } - break; - case LUA_TNUMBER: /* numbers */ - { - lua_Number d = tolua_tonumber(a_Source, i, 0); - LOGD("%i push number: %0.2f", i, d); - tolua_pushnumber(a_Destination, d ); - } - break; - case LUA_TUSERDATA: - { - const char * type = 0; - if (lua_getmetatable(a_Source,i)) - { - lua_rawget(a_Source, LUA_REGISTRYINDEX); - type = lua_tostring(a_Source, -1); - lua_pop(a_Source, 1); // Pop.. something?! I don't knooow~~ T_T - } - - // don't need tolua_tousertype we already have the type - void * ud = tolua_touserdata(a_Source, i, 0); - LOGD("%i push usertype: %p of type '%s'", i, ud, type); - if( type == 0 ) - { - LOGERROR("Call(): Something went wrong when trying to get usertype name!"); - return 0; - } - tolua_pushusertype(a_Destination, ud, type); - } - break; - default: /* other values */ - LOGERROR("Call(): Unsupported value: '%s'. Can only use numbers and strings!", lua_typename(a_Source, t)); - return 0; - } - } - return 1; -} - - - - -static int tolua_cPlugin_Call(lua_State* tolua_S) +static int tolua_cPlugin_Call(lua_State * tolua_S) { - cPluginLua * self = (cPluginLua *) tolua_tousertype(tolua_S, 1, 0); - lua_State* targetState = self->GetLuaState(); - int targetTop = lua_gettop(targetState); - - int top = lua_gettop(tolua_S); - LOGD("total in stack: %i", top ); - - std::string funcName = tolua_tostring(tolua_S, 2, ""); - LOGD("Func name: %s", funcName.c_str() ); - - lua_getglobal(targetState, funcName.c_str()); - if(!lua_isfunction(targetState,-1)) - { - LOGWARN("Error could not find function '%s' in plugin '%s'", funcName.c_str(), self->GetName().c_str() ); - lua_pop(targetState,1); - return 0; - } - - if( copy_lua_values(tolua_S, targetState, 3, top) == 0 ) // Start at 3 because 1 and 2 are the plugin and function name respectively - { - // something went wrong, exit - return 0; - } + cLuaState L(tolua_S); - int s = lua_pcall(targetState, top - 2, LUA_MULTRET, 0); - if (cLuaState::ReportErrors(targetState, s)) - { - LOGWARN("Error while calling function '%s' in plugin '%s'", funcName.c_str(), self->GetName().c_str() ); - return 0; - } - - int nresults = lua_gettop(targetState) - targetTop; - LOGD("num results: %i", nresults); - int ttop = lua_gettop(targetState); - if( copy_lua_values(targetState, tolua_S, targetTop+1, ttop) == 0 ) // Start at targetTop+1 and I have no idea why xD + // Log the obsoletion warning: + LOGWARNING("cPlugin:Call() is obsolete and unsafe, use cPluginManager:CallPlugin() instead."); + L.LogStackTrace(); + + // Retrieve the params: plugin and the function name to call + cPluginLua * TargetPlugin = (cPluginLua *) tolua_tousertype(tolua_S, 1, 0); + AString FunctionName = tolua_tostring(tolua_S, 2, ""); + + // Call the function: + int NumReturns = TargetPlugin->CallFunctionFromForeignState(FunctionName, L, 3, lua_gettop(L)); + if (NumReturns < 0) { - // something went wrong, exit + LOGWARNING("cPlugin::Call() failed to call destination function"); + L.LogStackTrace(); return 0; } - - lua_pop(targetState, nresults); // I have no idea what I'm doing, but it works - - return nresults; + return NumReturns; } @@ -2305,6 +2300,7 @@ void ManualBindings::Bind(lua_State * tolua_S) tolua_function(tolua_S, "AddHook", tolua_cPluginManager_AddHook); tolua_function(tolua_S, "BindCommand", tolua_cPluginManager_BindCommand); tolua_function(tolua_S, "BindConsoleCommand", tolua_cPluginManager_BindConsoleCommand); + tolua_function(tolua_S, "CallPlugin", tolua_cPluginManager_CallPlugin); tolua_function(tolua_S, "ForEachCommand", tolua_cPluginManager_ForEachCommand); tolua_function(tolua_S, "ForEachConsoleCommand", tolua_cPluginManager_ForEachConsoleCommand); tolua_function(tolua_S, "GetAllPlugins", tolua_cPluginManager_GetAllPlugins); diff --git a/src/Bindings/PluginLua.cpp b/src/Bindings/PluginLua.cpp index 4c4664815..1d8c4c6ed 100644 --- a/src/Bindings/PluginLua.cpp +++ b/src/Bindings/PluginLua.cpp @@ -1469,6 +1469,40 @@ bool cPluginLua::AddHookRef(int a_HookType, int a_FnRefIdx) +int cPluginLua::CallFunctionFromForeignState( + const AString & a_FunctionName, + cLuaState & a_ForeignState, + int a_ParamStart, + int a_ParamEnd +) +{ + cCSLock Lock(m_CriticalSection); + + // Call the function: + int NumReturns = m_LuaState.CallFunctionWithForeignParams(a_FunctionName, a_ForeignState, a_ParamStart, a_ParamEnd); + if (NumReturns < 0) + { + // The call has failed, an error has already been output to the log, so just silently bail out with the same error + return NumReturns; + } + + // Copy all the return values: + int Top = lua_gettop(m_LuaState); + int res = a_ForeignState.CopyStackFrom(m_LuaState, Top - NumReturns + 1, Top); + + // Remove the return values off this stack: + if (NumReturns > 0) + { + lua_pop(m_LuaState, NumReturns); + } + + return res; +} + + + + + AString cPluginLua::HandleWebRequest(const HTTPRequest * a_Request ) { cCSLock Lock(m_CriticalSection); diff --git a/src/Bindings/PluginLua.h b/src/Bindings/PluginLua.h index c01f5ca89..c13f31424 100644 --- a/src/Bindings/PluginLua.h +++ b/src/Bindings/PluginLua.h @@ -105,7 +105,7 @@ public: virtual void ClearConsoleCommands(void) override; - /// Returns true if the plugin contains the function for the specified hook type, using the old-style registration (#121) + /** Returns true if the plugin contains the function for the specified hook type, using the old-style registration (#121) */ bool CanAddOldStyleHook(int a_HookType); // cWebPlugin override @@ -115,26 +115,26 @@ public: virtual AString HandleWebRequest(const HTTPRequest * a_Request ) override; bool AddWebTab(const AString & a_Title, lua_State * a_LuaState, int a_FunctionReference); // >> EXPORTED IN MANUALBINDINGS << - /// Binds the command to call the function specified by a Lua function reference. Simply adds to CommandMap. + /** Binds the command to call the function specified by a Lua function reference. Simply adds to CommandMap. */ void BindCommand(const AString & a_Command, int a_FnRef); - /// Binds the console command to call the function specified by a Lua function reference. Simply adds to CommandMap. + /** Binds the console command to call the function specified by a Lua function reference. Simply adds to CommandMap. */ void BindConsoleCommand(const AString & a_Command, int a_FnRef); cLuaState & GetLuaState(void) { return m_LuaState; } cCriticalSection & GetCriticalSection(void) { return m_CriticalSection; } - /// Removes a previously referenced object (luaL_unref()) + /** Removes a previously referenced object (luaL_unref()) */ void Unreference(int a_LuaRef); - /// Calls the plugin-specified "cLuaWindow closing" callback. Returns true only if the callback returned true + /** Calls the plugin-specified "cLuaWindow closing" callback. Returns true only if the callback returned true */ bool CallbackWindowClosing(int a_FnRef, cWindow & a_Window, cPlayer & a_Player, bool a_CanRefuse); - /// Calls the plugin-specified "cLuaWindow slot changed" callback. + /** Calls the plugin-specified "cLuaWindow slot changed" callback. */ void CallbackWindowSlotChanged(int a_FnRef, cWindow & a_Window, int a_SlotNum); - /// Returns the name of Lua function that should handle the specified hook type in the older (#121) API + /** Returns the name of Lua function that should handle the specified hook type in the older (#121) API */ static const char * GetHookFnName(int a_HookType); /** Adds a Lua function to be called for the specified hook. @@ -143,37 +143,47 @@ public: */ bool AddHookRef(int a_HookType, int a_FnRefIdx); + /** Calls a function in this plugin's LuaState with parameters copied over from a_ForeignState. + The values that the function returns are placed onto a_ForeignState. + Returns the number of values returned, if successful, or negative number on failure. */ + int CallFunctionFromForeignState( + const AString & a_FunctionName, + cLuaState & a_ForeignState, + int a_ParamStart, + int a_ParamEnd + ); + // The following templates allow calls to arbitrary Lua functions residing in the plugin: - /// Call a Lua function with 0 args + /** Call a Lua function with 0 args */ template <typename FnT> bool Call(FnT a_Fn) { cCSLock Lock(m_CriticalSection); return m_LuaState.Call(a_Fn); } - /// Call a Lua function with 1 arg + /** Call a Lua function with 1 arg */ template <typename FnT, typename ArgT0> bool Call(FnT a_Fn, ArgT0 a_Arg0) { cCSLock Lock(m_CriticalSection); return m_LuaState.Call(a_Fn, a_Arg0); } - /// Call a Lua function with 2 args + /** Call a Lua function with 2 args */ template <typename FnT, typename ArgT0, typename ArgT1> bool Call(FnT a_Fn, ArgT0 a_Arg0, ArgT1 a_Arg1) { cCSLock Lock(m_CriticalSection); return m_LuaState.Call(a_Fn, a_Arg0, a_Arg1); } - /// Call a Lua function with 3 args + /** Call a Lua function with 3 args */ template <typename FnT, typename ArgT0, typename ArgT1, typename ArgT2> bool Call(FnT a_Fn, ArgT0 a_Arg0, ArgT1 a_Arg1, ArgT2 a_Arg2) { cCSLock Lock(m_CriticalSection); return m_LuaState.Call(a_Fn, a_Arg0, a_Arg1, a_Arg2); } - /// Call a Lua function with 4 args + /** Call a Lua function with 4 args */ template <typename FnT, typename ArgT0, typename ArgT1, typename ArgT2, typename ArgT3> bool Call(FnT a_Fn, ArgT0 a_Arg0, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3) { cCSLock Lock(m_CriticalSection); @@ -181,13 +191,13 @@ public: } protected: - /// Maps command name into Lua function reference + /** Maps command name into Lua function reference */ typedef std::map<AString, int> CommandMap; - /// Provides an array of Lua function references + /** Provides an array of Lua function references */ typedef std::vector<cLuaState::cRef *> cLuaRefs; - /// Maps hook types into arrays of Lua function references to call for each hook type + /** Maps hook types into arrays of Lua function references to call for each hook type */ typedef std::map<int, cLuaRefs> cHookMap; cCriticalSection m_CriticalSection; @@ -198,7 +208,7 @@ protected: cHookMap m_HookMap; - /// Releases all Lua references and closes the LuaState + /** Releases all Lua references and closes the LuaState */ void Close(void); } ; // tolua_export diff --git a/src/Bindings/PluginManager.cpp b/src/Bindings/PluginManager.cpp index 24bb914d1..92c06487c 100644 --- a/src/Bindings/PluginManager.cpp +++ b/src/Bindings/PluginManager.cpp @@ -1736,6 +1736,21 @@ bool cPluginManager::IsValidHookType(int a_HookType) +bool cPluginManager::DoWithPlugin(const AString & a_PluginName, cPluginCallback & a_Callback) +{ + // TODO: Implement locking for plugins + PluginMap::iterator itr = m_Plugins.find(a_PluginName); + if (itr == m_Plugins.end()) + { + return false; + } + return a_Callback.Item(itr->second); +} + + + + + bool cPluginManager::AddPlugin(cPlugin * a_Plugin) { m_Plugins[a_Plugin->GetDirectory()] = a_Plugin; diff --git a/src/Bindings/PluginManager.h b/src/Bindings/PluginManager.h index 9936f5a35..d8b838d80 100644 --- a/src/Bindings/PluginManager.h +++ b/src/Bindings/PluginManager.h @@ -122,7 +122,7 @@ public: // tolua_export } ; // tolua_end - /// Used as a callback for enumerating bound commands + /** Used as a callback for enumerating bound commands */ class cCommandEnumCallback { public: @@ -132,7 +132,11 @@ public: // tolua_export virtual bool Command(const AString & a_Command, const cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString) = 0; } ; - /// Returns the instance of the Plugin Manager (there is only ever one) + /** The interface used for enumerating and extern-calling plugins */ + typedef cItemCallback<cPlugin> cPluginCallback; + + + /** Returns the instance of the Plugin Manager (there is only ever one) */ static cPluginManager * Get(void); // tolua_export typedef std::map< AString, cPlugin * > PluginMap; @@ -143,7 +147,7 @@ public: // tolua_export void FindPlugins(); // tolua_export void ReloadPlugins(); // tolua_export - /// Adds the plugin to the list of plugins called for the specified hook type. Handles multiple adds as a single add + /** Adds the plugin to the list of plugins called for the specified hook type. Handles multiple adds as a single add */ void AddHook(cPlugin * a_Plugin, int a_HookType); unsigned int GetNumPlugins() const; // tolua_export @@ -206,46 +210,46 @@ public: // tolua_export bool DisablePlugin(const AString & a_PluginName); // tolua_export bool LoadPlugin (const AString & a_PluginName); // tolua_export - /// Removes all hooks the specified plugin has registered + /** Removes all hooks the specified plugin has registered */ void RemoveHooks(cPlugin * a_Plugin); - /// Removes the plugin from the internal structures and deletes its object. + /** Removes the plugin from the internal structures and deletes its object. */ void RemovePlugin(cPlugin * a_Plugin); - /// Removes all command bindings that the specified plugin has made + /** Removes all command bindings that the specified plugin has made */ void RemovePluginCommands(cPlugin * a_Plugin); - /// Binds a command to the specified plugin. Returns true if successful, false if command already bound. + /** Binds a command to the specified plugin. Returns true if successful, false if command already bound. */ bool BindCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString); // Exported in ManualBindings.cpp, without the a_Plugin param - /// Calls a_Callback for each bound command, returns true if all commands were enumerated + /** Calls a_Callback for each bound command, returns true if all commands were enumerated */ bool ForEachCommand(cCommandEnumCallback & a_Callback); // Exported in ManualBindings.cpp - /// Returns true if the command is in the command map + /** Returns true if the command is in the command map */ bool IsCommandBound(const AString & a_Command); // tolua_export - /// Returns the permission needed for the specified command; empty string if command not found + /** Returns the permission needed for the specified command; empty string if command not found */ AString GetCommandPermission(const AString & a_Command); // tolua_export - /// Executes the command, as if it was requested by a_Player. Checks permissions first. Returns true if executed. + /** Executes the command, as if it was requested by a_Player. Checks permissions first. Returns true if executed. */ bool ExecuteCommand(cPlayer * a_Player, const AString & a_Command); // tolua_export - /// Executes the command, as if it was requested by a_Player. Permisssions are not checked. Returns true if executed (false if not found) + /** Executes the command, as if it was requested by a_Player. Permisssions are not checked. Returns true if executed (false if not found) */ bool ForceExecuteCommand(cPlayer * a_Player, const AString & a_Command); // tolua_export - /// Removes all console command bindings that the specified plugin has made + /** Removes all console command bindings that the specified plugin has made */ void RemovePluginConsoleCommands(cPlugin * a_Plugin); - /// Binds a console command to the specified plugin. Returns true if successful, false if command already bound. + /** Binds a console command to the specified plugin. Returns true if successful, false if command already bound. */ bool BindConsoleCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_HelpString); // Exported in ManualBindings.cpp, without the a_Plugin param - /// Calls a_Callback for each bound console command, returns true if all commands were enumerated + /** Calls a_Callback for each bound console command, returns true if all commands were enumerated */ bool ForEachConsoleCommand(cCommandEnumCallback & a_Callback); // Exported in ManualBindings.cpp - /// Returns true if the console command is in the command map + /** Returns true if the console command is in the command map */ bool IsConsoleCommandBound(const AString & a_Command); // tolua_export - /// Executes the command split into a_Split, as if it was given on the console. Returns true if executed. Output is sent to the a_Output callback + /** Executes the command split into a_Split, as if it was given on the console. Returns true if executed. Output is sent to the a_Output callback */ bool ExecuteConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output); /** Appends all commands beginning with a_Text (case-insensitive) into a_Results. @@ -253,9 +257,13 @@ public: // tolua_export */ void TabCompleteCommand(const AString & a_Text, AStringVector & a_Results, cPlayer * a_Player); - /// Returns true if the specified hook type is within the allowed range + /** Returns true if the specified hook type is within the allowed range */ static bool IsValidHookType(int a_HookType); + /** Calls the specified callback with the plugin object of the specified plugin. + Returns false if plugin not found, and the value that the callback has returned otherwise. */ + bool DoWithPlugin(const AString & a_PluginName, cPluginCallback & a_Callback); + private: friend class cRoot; @@ -281,22 +289,22 @@ private: cPluginManager(); virtual ~cPluginManager(); - /// Reloads all plugins, defaulting to settings.ini for settings location + /** Reloads all plugins, defaulting to settings.ini for settings location */ void ReloadPluginsNow(void); - /// Reloads all plugins with a cIniFile object expected to be initialised to settings.ini + /** Reloads all plugins with a cIniFile object expected to be initialised to settings.ini */ void ReloadPluginsNow(cIniFile & a_SettingsIni); - /// Unloads all plugins + /** Unloads all plugins */ void UnloadPluginsNow(void); - /// Handles writing default plugins if 'Plugins' key not found using a cIniFile object expected to be intialised to settings.ini + /** Handles writing default plugins if 'Plugins' key not found using a cIniFile object expected to be intialised to settings.ini */ void InsertDefaultPlugins(cIniFile & a_SettingsIni); - /// Adds the plugin into the internal list of plugins and initializes it. If initialization fails, the plugin is removed again. + /** Adds the plugin into the internal list of plugins and initializes it. If initialization fails, the plugin is removed again. */ bool AddPlugin(cPlugin * a_Plugin); - /// Tries to match a_Command to the internal table of commands, if a match is found, the corresponding plugin is called. Returns true if the command is handled. + /** Tries to match a_Command to the internal table of commands, if a match is found, the corresponding plugin is called. Returns true if the command is handled. */ bool HandleCommand(cPlayer * a_Player, const AString & a_Command, bool a_ShouldCheckPermissions, bool & a_WasCommandForbidden); bool HandleCommand(cPlayer * a_Player, const AString & a_Command, bool a_ShouldCheckPermissions) { |