#include "scripting/lua-bindings/manual/platform/ios/CCLuaObjcBridge.h" #include NS_CC_BEGIN void LuaObjcBridge::luaopen_luaoc(lua_State *L) { s_luaState = L; lua_newtable(L); lua_pushstring(L, "callStaticMethod"); lua_pushcfunction(L, LuaObjcBridge::callObjcStaticMethod); lua_rawset(L, -3); lua_setglobal(L, "LuaObjcBridge"); } /** className methodName args */ int LuaObjcBridge::callObjcStaticMethod(lua_State *L) { if (lua_gettop(L) != 3 || !lua_isstring(L, -3) || !lua_isstring(L, -2)) { lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorInvalidParameters); return 2; } const char *className = lua_tostring(L, -3); const char *methodName = lua_tostring(L, -2); if (!className || !methodName) { lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorInvalidParameters); return 2; } Class targetClass = NSClassFromString([NSString stringWithCString:className encoding:NSUTF8StringEncoding]); if (!targetClass) { lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorClassNotFound); return 2; } SEL methodSel; bool hasArguments = lua_istable(L, -1); if (hasArguments) { NSString *methodName_ = [NSString stringWithCString:methodName encoding:NSUTF8StringEncoding]; methodName_ = [NSString stringWithFormat:@"%@:", methodName_]; methodSel = NSSelectorFromString(methodName_); } else { methodSel = NSSelectorFromString([NSString stringWithCString:methodName encoding:NSUTF8StringEncoding]); } if (methodSel == (SEL)0) { lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorMethodNotFound); return 2; } NSMethodSignature *methodSig = [targetClass methodSignatureForSelector:(SEL)methodSel]; if (methodSig == nil) { lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorMethodSignature); return 2; } @try { NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:methodSig]; [invocation setTarget:targetClass]; [invocation setSelector:methodSel]; NSUInteger returnLength = [methodSig methodReturnLength]; const char *returnType = [methodSig methodReturnType]; if (hasArguments) { NSMutableDictionary *dict = [NSMutableDictionary dictionary]; lua_pushnil(L); while (lua_next(L, -2)) { NSString *key = [NSString stringWithCString:lua_tostring(L, -2) encoding:NSUTF8StringEncoding]; switch (lua_type(L, -1)) { case LUA_TNUMBER: [dict setObject:[NSNumber numberWithFloat:lua_tonumber(L, -1)] forKey:key]; break; case LUA_TBOOLEAN: [dict setObject:[NSNumber numberWithBool:lua_toboolean(L, -1)] forKey:key]; break; case LUA_TSTRING: [dict setObject:[NSString stringWithCString:lua_tostring(L, -1) encoding:NSUTF8StringEncoding] forKey:key]; break; case LUA_TFUNCTION: int functionId = retainLuaFunction(L, -1, NULL); [dict setObject:[NSNumber numberWithInt:functionId] forKey:key]; break; } lua_pop(L, 1); } [invocation setArgument:&dict atIndex:2]; [invocation invoke]; } else { [invocation invoke]; } lua_pushboolean(L, 1); if (returnLength > 0) { if (strcmp(returnType, @encode(id)) == 0) { id ret; [invocation getReturnValue:&ret]; pushValue(L, ret); } else if (strcmp(returnType, @encode(BOOL)) == 0) // BOOL { char ret; [invocation getReturnValue:&ret]; lua_pushboolean(L, ret); } else if (strcmp(returnType, @encode(int)) == 0) // int { int ret; [invocation getReturnValue:&ret]; lua_pushinteger(L, ret); } else if (strcmp(returnType, @encode(float)) == 0) // float { float ret; [invocation getReturnValue:&ret]; lua_pushnumber(L, ret); } else { NSLog(@"not support return type = %s", returnType); lua_pushnil(L); } } else { lua_pushnil(L); } return 2; } @catch (NSException *exception) { NSLog(@"EXCEPTION THROW: %@", exception); lua_pushboolean(L, 0); lua_pushinteger(L, kLuaBridgeErrorExceptionOccurred); return 2; } } void LuaObjcBridge::pushValue(lua_State *L, void *val) { id oval = (id)val; if (oval == nil) { lua_pushnil(L); } else if ([oval isKindOfClass:[NSNumber class]]) { NSNumber *number = (NSNumber *)oval; const char *numberType = [number objCType]; if (strcmp(numberType, @encode(BOOL)) == 0) { lua_pushboolean(L, [number boolValue]); } else if (strcmp(numberType, @encode(int)) == 0) { lua_pushinteger(L, [number intValue]); } else { lua_pushnumber(L, [number floatValue]); } } else if ([oval isKindOfClass:[NSString class]]) { lua_pushstring(L, [oval cStringUsingEncoding:NSUTF8StringEncoding]); } else if ([oval isKindOfClass:[NSDictionary class]]) { lua_newtable(L); for (id key in oval) { const char *key_ = [[NSString stringWithFormat:@"%@", key] cStringUsingEncoding:NSUTF8StringEncoding]; lua_pushstring(L, key_); pushValue(L, [oval objectForKey:key]); lua_rawset(L, -3); } return; } else { lua_pushstring(L, [[NSString stringWithFormat:@"%@", oval] cStringUsingEncoding:NSUTF8StringEncoding]); } } NS_CC_END