package shell

type Block struct {
	BaseToken
}

type DollarBlock struct {
	BaseToken
}

type BlockParameters struct{}
type DollarBlockParameters struct {
	BlockParameters
}

func (p *BlockParameters) Enter(i *CharIterator) error {
	return i.Next()
}

func (p *DollarBlockParameters) SubParsers() []Parser {
	return []Parser{
		&BaseParser{
			parameters: &WordParameters{},
		},
	}
}

func (p *DollarBlockParameters) MakeToken() Token {
	return &DollarBlock{}
}

func (p *BlockParameters) SubParsers() []Parser {
	return []Parser{
		&BaseParser{
			parameters: &StatementParameters{},
		},
	}
}

func (p *BlockParameters) Supports(charsBefore []rune, r rune) bool {
	if r == '{' {
		return len(charsBefore) == 0 ||
			countBackslashSuffixes(charsBefore)%2 == 0
	}

	return false
}

func (p *BlockParameters) ShouldLeave(charsBefore []rune, r rune) bool {
	if r == '}' {
		return len(charsBefore) == 0 ||
			countBackslashSuffixes(charsBefore)%2 == 0
	}

	return false
}

func (p *BlockParameters) MakeToken() Token {
	return &Block{}
}