Method restoreState

compiler/parser/parser.go:25063–25069

restore parser current state to the state storeDict. every restoreState should applied only one time for every cloned state

(state storeDict)

// restore parser current state to the state storeDict.
// every restoreState should applied only one time for every cloned state
func (p *parser) restoreState(state storeDict) {
	if p.debug {
		defer p.out(p.in("restoreState"))
	}
	p.cur.state.Discard()
	p.cur.state = state
}

// get the slice of bytes from the savepoint start to the current position.
func (p *parser) sliceFrom(start savepoint) []byte {