token

type Boolean struct {
	Offset int
	Value  bool
}

type Identifier struct {
	Offset int
	Value  string
}

type Keyword struct {
	Offset int
	Value  string
}

type Newline struct {
	Offset int
}

type Null struct {
	Offset int
}

type Number struct {
	Offset int
	Value  float64
}

type Punctuator struct {
	Offset int
	Value  string
}

type String struct {
	Offset int
	Value  string
}

type Template struct {
	Offset int
	Value  string
}

type TemplateHead struct {
	Offset int
	Value  string
}

type TemplateMiddle struct {
	Offset int
	Value  string
}

type TemplateTail struct {
	Offset int
	Value  string
}

type Token interface {
	VisitToken(TokenVisitor)
}

type TokenVisitor struct {
	Newline        func(Newline)
	Keyword        func(Keyword)
	Identifier     func(Identifier)
	Punctuator     func(Punctuator)
	Number         func(Number)
	String         func(String)
	Boolean        func(Boolean)
	Null           func(Null)
	Template       func(Template)
	TemplateHead   func(TemplateHead)
	TemplateMiddle func(TemplateMiddle)
	TemplateTail   func(TemplateTail)
}