Function GetTransition

strings/ahocorasick/shared.go:121–130

GetTransition Returns ending state for transition σ(fromState,overChar), '-1' if there is none.

(fromState int, overChar uint8, at map[int]map[uint8]int)

// GetTransition Returns ending state for transition σ(fromState,overChar), '-1' if there is none.
func GetTransition(fromState int, overChar uint8, at map[int]map[uint8]int) (toState int) {
	if !StateExists(fromState, at) {
		return -1
	}
	toState, ok := at[fromState][overChar]
	if !ok {
		return -1
	}
	return toState
}

// StateExists Checks if state 'state' exists. Returns 'true' if it does, 'false' otherwise.
func StateExists(state int, at map[int]map[uint8]int) bool {