129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <assert.h>
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#include "FSM_private.h"
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#include "FSM_protected.h"
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#include "FSM_public.h"
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/*
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protected 函数
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*/
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void resetBaseFSM(FSM *pFSM)
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{
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if (pFSM->privateVars.fcns.exitActionTable[pFSM->privateVars.curState] != NULL)
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pFSM->privateVars.fcns.exitActionTable[pFSM->privateVars.curState](pFSM);
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pFSM->privateVars.curState = 0;
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}
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void stepBaseFSM(FSM *pFSM)
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{
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int index = pFSM->privateVars.curState * pFSM->privateVars.numEvent + pFSM->privateVars.curEvent;
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if (pFSM->privateVars.fcns.transitionTable[index] != NULL)
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{
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if (pFSM->privateVars.fcns.exitActionTable[pFSM->privateVars.curState] != NULL)
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pFSM->privateVars.fcns.exitActionTable[pFSM->privateVars.curState](pFSM);
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pFSM->privateVars.curState = (*pFSM->privateVars.fcns.transitionTable[index])(pFSM);
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if (pFSM->privateVars.fcns.enterActionTable[pFSM->privateVars.curState] != NULL)
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pFSM->privateVars.fcns.enterActionTable[pFSM->privateVars.curState](pFSM);
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}
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else if(pFSM->privateVars.curState == 0){
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pFSM->privateVars.curState = pFSM->privateVars.defaultState;
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if (pFSM->privateVars.fcns.enterActionTable[pFSM->privateVars.curState] != NULL)
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pFSM->privateVars.fcns.enterActionTable[pFSM->privateVars.curState](pFSM);
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}
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else
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{
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if (pFSM->privateVars.fcns.duringActionTable[pFSM->privateVars.curState] != NULL)
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pFSM->privateVars.fcns.duringActionTable[pFSM->privateVars.curState](pFSM);
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}
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}
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FSM* newBaseFSM(int numState, int numEvent, int defaultState){
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typedef void (*StateFuncPtr)(FSM* pFSM);
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typedef int (*TransitionFuncPtr)(FSM* pFSM);
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FSM *pFSM = calloc(1, sizeof(FSM));
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pFSM->privateVars.curEvent = 0;
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pFSM->privateVars.curState = 0;
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pFSM->privateVars.numEvent = numEvent;
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pFSM->privateVars.defaultState = defaultState;
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pFSM->privateVars.numChild = 0;
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pFSM->privateVars.fcns.duringActionTable = calloc(numState, sizeof(StateFuncPtr));
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pFSM->privateVars.fcns.enterActionTable = calloc(numState, sizeof(StateFuncPtr));
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pFSM->privateVars.fcns.exitActionTable = calloc(numState, sizeof(StateFuncPtr));
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pFSM->privateVars.fcns.transitionTable = calloc(numState * numEvent, sizeof(TransitionFuncPtr));
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FSMVtbl vtbl = {
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.reset = resetBaseFSM,
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.step = stepBaseFSM,
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.selectEvent = NULL,
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.setupHandler = NULL,
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.initData = NULL,
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};
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pFSM->vtbl = vtbl;
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return pFSM;
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}
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void constructFSM(FSM* pFSM){
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assert(pFSM->vtbl.setupHandler);
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assert(pFSM->vtbl.initData);
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pFSM->vtbl.setupHandler(&pFSM->privateVars.fcns);
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pFSM->vtbl.initData(pFSM);
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}
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/*
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public 函数
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*/
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int getFSMCurState(FSM *pFSM){
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return pFSM->privateVars.curState;
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}
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int getFSMCurEvent(FSM *pFSM){
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return pFSM->privateVars.curEvent;
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}
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void setEvent(FSM* pFSM){
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assert(pFSM->vtbl.selectEvent);
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pFSM->privateVars.curEvent = pFSM->vtbl.selectEvent(pFSM->data);
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if(0 == pFSM->privateVars.numChild){
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return;
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}
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for (int i = 0; i < pFSM->privateVars.numChild; i++)
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{
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FSM *cFSM = pFSM->privateVars.childFSM[i];
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setEvent(cFSM);
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}
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}
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void setChildNum(FSM *pFSM, int num){
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pFSM->privateVars.numChild = num;
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pFSM->privateVars.childFSM = (FSM **)calloc(num, sizeof(FSM *));
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}
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void registerChildFSM(FSM *parent, FSM *child, int index){
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parent->privateVars.childFSM[index] = child;
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}
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void *getData(FSM* pFSM){
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return pFSM->data;
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}
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FSMVtbl *vptrFSM(FSM* pFSM){
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return &pFSM->vtbl;
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}
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