Second Life viewer sources 1.13.2.12

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diff --git a/linden/indra/llcharacter/llstatemachine.h b/linden/indra/llcharacter/llstatemachine.h
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+/** 
+ * @file llstatemachine.h
+ * @brief LLStateMachine class header file.
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#ifndef LL_LLSTATEMACHINE_H
+#define LL_LLSTATEMACHINE_H
+
+#include <string>
+
+#include "llassoclist.h"
+#include "llerror.h"
+#include <map>
+
+class LLUniqueID
+{
+        friend bool     operator==(const LLUniqueID &a, const LLUniqueID &b);
+        friend bool     operator!=(const LLUniqueID &a, const LLUniqueID &b);
+protected:
+        static U32      sNextID;
+        U32                     mId;
+public:
+        LLUniqueID(){mId = sNextID++;}
+        virtual ~LLUniqueID(){}
+        U32             getID() {return mId;}
+};
+
+class LLFSMTransition : public LLUniqueID
+{
+public:
+        LLFSMTransition() : LLUniqueID(){};
+        virtual std::string getName(){ return "unnamed"; }
+};
+
+class LLFSMState : public LLUniqueID
+{
+public:
+        LLFSMState() : LLUniqueID(){};
+        virtual void onEntry(void *){};
+        virtual void onExit(void *){};
+        virtual void execute(void *){};
+        virtual std::string getName(){ return "unnamed"; }
+};
+
+class LLStateDiagram
+{
+typedef std::map<LLFSMTransition*, LLFSMState*> Transitions;
+
+friend std::ostream& operator<<(std::ostream &s, LLStateDiagram &FSM);
+friend class LLStateMachine;
+
+protected:
+        typedef std::map<LLFSMState*, Transitions> StateMap;
+        StateMap                        mStates;
+        Transitions                     mDefaultTransitions;
+        LLFSMState*                     mDefaultState;
+        BOOL                            mUseDefaultState;
+
+public:
+        LLStateDiagram();
+        virtual ~LLStateDiagram();
+
+protected:
+        // add a state to the state graph, executed implicitly when adding transitions
+        BOOL addState(LLFSMState *state);
+
+        // add a directed transition between 2 states
+        BOOL addTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
+
+        // add an undirected transition between 2 states
+        BOOL addUndirectedTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
+
+        // add a transition that is taken if none other exist
+        void addDefaultTransition(LLFSMState& end_state, LLFSMTransition& transition);
+
+        // process a possible transition, and get the resulting state
+        LLFSMState* processTransition(LLFSMState& start_state, LLFSMTransition& transition);
+
+        // add a transition that exists for every state
+        void setDefaultState(LLFSMState& default_state);
+
+        // return total number of states with no outgoing transitions
+        S32 numDeadendStates();
+
+        // does this state exist in the state diagram?
+        BOOL stateIsValid(LLFSMState& state);
+
+        // get a state pointer by ID
+        LLFSMState* getState(U32 state_id);
+
+public:
+        // save the graph in a DOT file for rendering and visualization
+        BOOL saveDotFile(const char* filename);
+};
+
+class LLStateMachine
+{
+protected:
+        LLFSMState*                     mCurrentState;
+        LLFSMState*                     mLastState;
+        LLFSMTransition*        mLastTransition;
+        LLStateDiagram*         mStateDiagram;
+
+public:
+        LLStateMachine();
+        virtual ~LLStateMachine();
+
+        // set state diagram
+        void setStateDiagram(LLStateDiagram* diagram);
+
+        // process this transition
+        void processTransition(LLFSMTransition &transition, void* user_data);
+
+        // returns current state
+        LLFSMState*     getCurrentState() const;
+
+        // execute current state
+        void runCurrentState(void *data);
+
+        // set state by state pointer
+        BOOL setCurrentState(LLFSMState *initial_state, void* user_data, BOOL skip_entry = TRUE);
+
+        // set state by unique ID
+        BOOL setCurrentState(U32 state_id, void* user_data, BOOL skip_entry = TRUE);
+};
+
+#endif //_LL_LLSTATEMACHINE_H