package lexer

import (
	"fmt"

	"git.milar.in/milarin/bufr"
)

type Token struct {
	Type  TokenType
	Value string
	Start bufr.Position
	End   bufr.Position
}

func (t Token) String() string {
	return fmt.Sprintf(
		"type: %s | value: '%s' | start: (%d:%d) | end: (%d:%d)",
		t.Type, EscSeqPrintReplacer.Replace(t.Value), t.Start.Line, t.Start.Column, t.End.Line, t.End.Column,
	)
}

type TokenType uint8

const (
	TokenTypeComment TokenType = iota
	TokenTypeKeyword
	TokenTypeIndent
	TokenTypeSeparator
	TokenTypeWord
	TokenTypeOperator
)

func (tt TokenType) String() string {
	switch tt {
	case TokenTypeComment:
		return "comment"
	case TokenTypeKeyword:
		return "keyword"
	case TokenTypeIndent:
		return "indent"
	case TokenTypeSeparator:
		return "separator"
	case TokenTypeWord:
		return "word"
	case TokenTypeOperator:
		return "operator"
	default:
		panic(fmt.Sprintf("invalid token type: %d", tt))
	}
}