/*
Copyright 2023 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package ini

// Copy from https://github.com/aws/aws-sdk-go
// May have been modified by Beijing Volcanoengine Technology Ltd.

// skipper is used to skip certain blocks of an ini file.
// Currently skipper is used to skip nested blocks of ini
// files. See example below
//
//	[ foo ]
//	nested = ; this section will be skipped
//		a=b
//		c=d
//	bar=baz ; this will be included
type skipper struct {
	shouldSkip bool
	TokenSet   bool
	prevTok    Token
}

func newSkipper() skipper {
	return skipper{
		prevTok: emptyToken,
	}
}

func (s *skipper) ShouldSkip(tok Token) bool {
	if s.shouldSkip &&
		s.prevTok.Type() == TokenNL &&
		tok.Type() != TokenWS {

		s.Continue()
		return false
	}
	s.prevTok = tok

	return s.shouldSkip
}

func (s *skipper) Skip() {
	s.shouldSkip = true
	s.prevTok = emptyToken
}

func (s *skipper) Continue() {
	s.shouldSkip = false
	s.prevTok = emptyToken
}