Function LastLexicalToken

postgres/parser/parser/scan.go:1061–1071

LastLexicalToken returns the last lexical token. If the string has no lexical tokens, returns 0 and ok=false.

(sql string)

// LastLexicalToken returns the last lexical token. If the string has no lexical
// tokens, returns 0 and ok=false.
func LastLexicalToken(sql string) (lastTok int, ok bool) {
	s := makeScanner(sql)
	var lval sqlSymType
	for {
		last := lval.id
		s.scan(&lval)
		if lval.id == 0 {
			return int(last), last != 0
		}
	}
}