QSTATE s0(QEVENT const *e); QSTATE s1(QEVENT const *e); QSTATE s2(QEVENT const *e); QSTATE s11(QEVENT const *e); QSTATE s21(QEVENT const *e); QSTATE s211(QEVENT const *e); QSTATE Q_Top(QEVENT const *e); static void Initial(QEVENT const *e); static bool bFoo;
enum QSignals { A_SIG = Q_USER_SIG,
B_SIG, C_SIG, D_SIG, E_SIG, F_SIG, G_SIG, H_SIG };
static const QEVENT testQEvt[] = {
{A_SIG, 0, 0}, {B_SIG, 0, 0}, {C_SIG, 0, 0}, {D_SIG, 0, 0}, {E_SIG, 0, 0}, {F_SIG, 0, 0}, {G_SIG, 0, 0}, {H_SIG, 0, 0} };
int main() {
printf(\
Initial(0); // trigger initial transition for (;;) {
char c;
printf(\ c = getc(stdin);
getc(stdin); // discard '\\n' if (c < 'a' || 'h' < c) { return 0;
}
Q_Dispatch(&testQEvt[c - 'a']); // dispatch }
return 0; }
static QSTATE Q_Top(QEVENT const *e) {
return 0; }
void Initial(QEVENT const *e) {
bFoo = false; Q_Init((QSTATE)s0); }
QSTATE s0(QEVENT const *e) { if (e != NULL) {
switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0;
case Q_INIT_SIG: printf(\return 0; case E_SIG: printf(\return 0; } }
return (QSTATE)Q_Top; }
QSTATE s1(QEVENT const *e) { switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0;
case Q_INIT_SIG: printf(\return 0; case A_SIG: printf(\return 0; case B_SIG: printf(\return 0; case C_SIG: printf(\return 0; case D_SIG: printf(\return 0; case F_SIG: printf(\return 0; }
return (QSTATE)s0; }
QSTATE s11(QEVENT const *e) { switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0; case G_SIG: printf(\return 0;
case H_SIG: // internal transition with a guard if (bFoo)
{ // test the guard condition printf(\ bFoo = false; return 0; } break; }
return (QSTATE)s1; }
QSTATE s2( QEVENT const *e) { switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0;
case Q_INIT_SIG: printf(\return 0; case C_SIG: printf(\return 0; case F_SIG: printf(\return 0; }
return (QSTATE)s0; }
QSTATE s21(QEVENT const *e) { switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0;
case Q_INIT_SIG:printf(\return 0; case B_SIG: printf(\return 0; case H_SIG: // self transition with a guard if (!bFoo)
{ // test the guard condition printf(\ bFoo = true;
Q_TRAN(s21); // self transition return 0; }
break; //break to return the superstate }
return (QSTATE)s2; }
QSTATE s211(QEVENT const *e) { switch (e->sig) {
case Q_ENTRY_SIG: printf(\return 0; case Q_EXIT_SIG: printf(\return 0; case D_SIG: printf(\return 0; case G_SIG: printf(\return 0; }
return (QSTATE)s21; }
(3) 输出结果：
Hiberarchy state machine testing
Top_Init;s0-ENTRY;s0-INIT;s1-ENTRY;s1-INIT;s11-ENTRY; Signal<-a
s1-A;s11-EXIT;s1-EXIT;s1-ENTRY;s1-INIT;s11-ENTRY; Signal<-e
s0-E;s11-EXIT;s1-EXIT;s2-ENTRY;s21-ENTRY;s211-ENTRY; Signal<-e
s0-E;s211-EXIT;s21-EXIT;s2-EXIT;s2-ENTRY;s21-ENTRY;s211-ENTRY; Signal<-a Signal<-h
s21-H;s211-EXIT;s21-EXIT;s21-ENTRY;s21-INIT;s211-ENTRY; Signal<-h Signal<-x
说明：上面功能都是通过C语言实现的，大家可以将其用C++实现，共享一下。
