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author | Max Horn | 2010-10-28 00:25:33 +0000 |
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committer | Max Horn | 2010-10-28 00:25:33 +0000 |
commit | cf3551525f4583ec8a5feb231cb25d81a9722853 (patch) | |
tree | 6c7fc224aa21aecb8027efcf2fbeb3d4e6eef3e8 /engines/sword25/kernel | |
parent | 7e1d78cab1f25bf15c67d523dab1891067bd07f7 (diff) | |
download | scummvm-rg350-cf3551525f4583ec8a5feb231cb25d81a9722853.tar.gz scummvm-rg350-cf3551525f4583ec8a5feb231cb25d81a9722853.tar.bz2 scummvm-rg350-cf3551525f4583ec8a5feb231cb25d81a9722853.zip |
SWORD25: Get rid of CallbackRegistry
svn-id: r53898
Diffstat (limited to 'engines/sword25/kernel')
-rw-r--r-- | engines/sword25/kernel/callbackregistry.cpp | 111 | ||||
-rw-r--r-- | engines/sword25/kernel/callbackregistry.h | 84 |
2 files changed, 0 insertions, 195 deletions
diff --git a/engines/sword25/kernel/callbackregistry.cpp b/engines/sword25/kernel/callbackregistry.cpp deleted file mode 100644 index 673da0679c..0000000000 --- a/engines/sword25/kernel/callbackregistry.cpp +++ /dev/null @@ -1,111 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - */ - -/* - * This code is based on Broken Sword 2.5 engine - * - * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer - * - * Licensed under GNU GPL v2 - * - */ - -// Alle Callbackfunktionen die von Objekten gerufen werden, die persistiert werden können, müssen hier registriert werden. -// Beim Speichern wird statt des Pointers der Bezeichner gespeichert. Beim Laden wird der Bezeichner wieder in einen Pointer umgewandelt. -// Diese Klasse führt also so etwas ähnliches wie eine Importtabelle für Callback-Funktionen. -// -// Dieses Vorgehen hat mehrere Vorteile: -// 1. Die Speicherstände sind plattformunabhängig. Es werden keine Pointer auf Funktionen gespeichert, sondern nur Namen von Callbackfunktionen. -// Diese können beim Laden über diese Klasse in systemabhängige Pointer umgewandelt werden. -// 2. Speicherstände können auch nach einem Engineupdate weiterhin benutzt werden. Beim Erstellen einer neun Binary verschieben sich häufig die -// Funktionen. Eine Callbackfunktion könnte sich also nach einem Update an einer anderen Stelle befinden als davor. Wenn im Spielstand der -// Pointer gespeichert war, stürtzt das Programm beim Äufrufen dieser Callbackfunktion ab. Durch das Auflösungverfahren wird beim Laden der -// Callbackbezeichner in den neuen Funktionspointer umgewandelt und der Aufruf kann erfolgen. - -#define BS_LOG_PREFIX "CALLBACKREGISTRY" - -#include "sword25/kernel/callbackregistry.h" - -namespace Sword25 { - -bool CallbackRegistry::registerCallbackFunction(const Common::String &name, CallbackPtr ptr) { - if (name == "") { - BS_LOG_ERRORLN("The empty string is not allowed as a callback function name."); - return false; - } - - if (findPtrByName(name) != 0) { - BS_LOG_ERRORLN("There is already a callback function with the name \"%s\".", name.c_str()); - return false; - } - if (findNameByPtr(ptr) != "") { - BS_LOG_ERRORLN("There is already a callback function with the pointer 0x%x.", ptr); - return false; - } - - storeCallbackFunction(name, ptr); - - return true; -} - -CallbackPtr CallbackRegistry::resolveCallbackFunction(const Common::String &name) const { - CallbackPtr result = findPtrByName(name); - - if (!result) { - BS_LOG_ERRORLN("There is no callback function with the name \"%s\".", name.c_str()); - } - - return result; -} - -Common::String CallbackRegistry::resolveCallbackPointer(CallbackPtr ptr) const { - const Common::String &result = findNameByPtr(ptr); - - if (result == "") { - BS_LOG_ERRORLN("There is no callback function with the pointer 0x%x.", ptr); - } - - return result; -} - -CallbackPtr CallbackRegistry::findPtrByName(const Common::String &name) const { - // Eintrag in der Map finden und den Pointer zurückgeben. - NameToPtrMap::const_iterator it = _nameToPtrMap.find(name); - return it == _nameToPtrMap.end() ? 0 : it->_value; -} - -Common::String CallbackRegistry::findNameByPtr(CallbackPtr ptr) const { - // Eintrag in der Map finden und den Namen zurückgeben. - PtrToNameMap::const_iterator it = _ptrToNameMap.find(ptr); - return it == _ptrToNameMap.end() ? "" : it->_value; -} - -void CallbackRegistry::storeCallbackFunction(const Common::String &name, CallbackPtr ptr) { - // Callback-Funktion in beide Maps eintragen. - _nameToPtrMap[name] = ptr; - _ptrToNameMap[ptr] = name; -} - -} // End of namespace Sword25 diff --git a/engines/sword25/kernel/callbackregistry.h b/engines/sword25/kernel/callbackregistry.h deleted file mode 100644 index f73a1341f7..0000000000 --- a/engines/sword25/kernel/callbackregistry.h +++ /dev/null @@ -1,84 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - */ - -/* - * This code is based on Broken Sword 2.5 engine - * - * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer - * - * Licensed under GNU GPL v2 - * - */ - -#ifndef SWORD25_CALLBACK_REGISTRY_H -#define SWORD25_CALLBACK_REGISTRY_H - -#include "common/scummsys.h" -#include "common/str.h" -#include "common/hash-str.h" -#include "common/hashmap.h" -#include "sword25/kernel/common.h" - -namespace Sword25 { - -typedef void (*CallbackPtr)(int command); - -class CallbackRegistry { -public: - static CallbackRegistry &instance() { - static CallbackRegistry _instance; - return _instance; - } - - bool registerCallbackFunction(const Common::String &name, CallbackPtr ptr); - CallbackPtr resolveCallbackFunction(const Common::String &name) const; - Common::String resolveCallbackPointer(CallbackPtr ptr) const; - -private: - typedef Common::HashMap<Common::String, CallbackPtr, Common::CaseSensitiveString_Hash, Common::CaseSensitiveString_EqualTo> NameToPtrMap; - NameToPtrMap _nameToPtrMap; - - struct CallbackPtr_EqualTo { - bool operator()(CallbackPtr x, CallbackPtr y) const { - return x == y; - } - }; - struct CallbackPtr_Hash { - uint operator()(CallbackPtr x) const { - return *(uint *)&x; - } - }; - - typedef Common::HashMap<CallbackPtr, Common::String, CallbackPtr_Hash, CallbackPtr_EqualTo> PtrToNameMap; - PtrToNameMap _ptrToNameMap; - - CallbackPtr findPtrByName(const Common::String &name) const; - Common::String findNameByPtr(CallbackPtr ptr) const; - void storeCallbackFunction(const Common::String &name, CallbackPtr ptr); -}; - -} // End of namespace Sword25 - -#endif |