package nginx

import (
	"io"
)

// LineType enumerates available line types
type LineType byte

const (
	// NONE is the default line type (invalid syntax)
	NONE LineType = iota
	// COMMENT represents a #-comment
	COMMENT
	// COLONCOMMENT represents a ;-comment
	COLONCOMMENT
	// ASSIGNMENT line
	ASSIGNMENT
	// INCLUDE  line
	INCLUDE
	// SECTION start
	SECTION
	// SECTIONEND line '}'
	SECTIONEND
)

// Line represents a meaningful line
type Line struct {
	// Number of the line in the input file
	Number int

	// Type of line
	Type LineType

	// Path is the absolute dot-separated path to this line
	// ""    | at the root of the file
	// "a.b" | inside the 'a' section inside the 'a' section
	Path string

	// Components of the line
	Components []string

	// Lines children of the current section (nil if not a section)
	Lines []*Line

	// Indent is the indentation characters
	Indent string
}

type nginx struct {
	Lines []*Line
}

// NewDecoder implements parser.T
func (n *nginx) NewDecoder(r io.Reader) *decoder {
	return &decoder{reader: r}
}