wearei
theLCAofsrcStatea
dtarget
assertee
trysizeofe
trysizeofe
trye
tryfits
whilese

retracethee
trypathi
reverseorder
Q_TRIGGERsQ_ENTRY_SIG
e
ters

actStatetarget
updatecurre
tstate
while0Q_TRIGGERtargetQ_INIT_SIG

i
itialtra
sitio
mustgoo
eleveldeep
asserttargetQ_TRIGGERactStateQ_EMPTY_SIG
targetactState
Q_TRIGGERtargetQ_ENTRY_SIG
e
tertarget

3范例：1范例状态图
2范例代码
i
cludestdiohi
clude