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engines/ultima/ultima8/usecode/uc_machine.h

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ULTIMA8_USECODE_UCMACHINE_H
+#define ULTIMA8_USECODE_UCMACHINE_H
+
+#include "ultima/ultima8/misc/common_types.h"
+#include "ultima/ultima8/misc/set.h"
+#include "ultima/shared/std/string.h"
+#include "ultima/shared/std/containers.h"
+#include "ultima/ultima8/usecode/intrinsics.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+class Debugger;
+class Process;
+class UCProcess;
+class ConvertUsecode;
+class GlobalStorage;
+class UCList;
+class idMan;
+
+class UCMachine {
+	friend class Debugger;
+public:
+	UCMachine(const Intrinsic *iset, unsigned int icount);
+	~UCMachine();
+
+	static UCMachine *get_instance() {
+		return _ucMachine;
+	}
+
+	void reset();
+
+	void execProcess(UCProcess *proc);
+
+	const Std::string &getString(uint16 str) const;
+	UCList *getList(uint16 l);
+
+	void freeString(uint16 s);
+	void freeStringList(uint16 l);
+	void freeList(uint16 l);
+
+	uint16 duplicateString(uint16 str);
+
+	void usecodeStats() const;
+
+	static uint32 listToPtr(uint16 l);
+	static uint32 stringToPtr(uint16 s);
+	static uint32 stackToPtr(uint16 pid, uint16 offset);
+	static uint32 globalToPtr(uint16 offset);
+	static uint32 objectToPtr(uint16 objID);
+
+	static uint16 ptrToObject(uint32 ptr);
+
+	bool assignPointer(uint32 ptr, const uint8 *data, uint32 size);
+	bool dereferencePointer(uint32 ptr, uint8 *data, uint32 size);
+
+	void saveGlobals(Common::WriteStream *ws) const;
+	void saveStrings(Common::WriteStream *ws) const;
+	void saveLists(Common::WriteStream *ws) const;
+
+	bool loadGlobals(Common::ReadStream *rs, uint32 version);
+	bool loadStrings(Common::ReadStream *rs, uint32 version);
+	bool loadLists(Common::ReadStream *rs, uint32 version);
+
+	INTRINSIC(I_true);
+	INTRINSIC(I_false);
+	INTRINSIC(I_dummyProcess);
+	INTRINSIC(I_getName);
+	INTRINSIC(I_urandom);
+	INTRINSIC(I_rndRange);
+	INTRINSIC(I_numToStr);
+
+protected:
+	void loadIntrinsics(const Intrinsic *i, unsigned int icount);
+
+private:
+	ConvertUsecode *_convUse;
+	const Intrinsic *_intrinsics;
+	unsigned int _intrinsicCount;
+
+	GlobalStorage *_globals;
+
+	Common::HashMap<uint16, UCList *> _listHeap;
+	Common::HashMap<uint16, Std::string> _stringHeap;
+
+	// Add a string to the list (copies the string)
+	uint16 assignString(const char *str);
+	uint16 assignList(UCList *l);
+
+	idMan *_listIDs;
+	idMan *_stringIDs;
+
+	static UCMachine *_ucMachine;
+
+	// tracing
+	bool _tracingEnabled;
+	bool _traceAll;
+	Set<ObjId> _traceObjIDs;
+	Set<ProcId> _tracePIDs;
+	Set<uint16> _traceClasses;
+
+	inline bool trace_show(ProcId pid, ObjId objid, uint16 ucclass) {
+		if (!_tracingEnabled) return false;
+		if (_traceAll) return true;
+		if (_traceObjIDs.find(objid) != _traceObjIDs.end()) return true;
+		if (_tracePIDs.find(pid) != _tracePIDs.end()) return true;
+		if (_traceClasses.find(ucclass) != _traceClasses.end()) return true;
+		return false;
+	}
+
+};
+
+} // End of namespace Ultima8
+} // End of namespace Ultima
+
+#endif