1package ssh_config
 2
 3import "fmt"
 4
 5type token struct {
 6	Position
 7	typ tokenType
 8	val string
 9}
10
11func (t token) String() string {
12	switch t.typ {
13	case tokenEOF:
14		return "EOF"
15	}
16	return fmt.Sprintf("%q", t.val)
17}
18
19type tokenType int
20
21const (
22	eof = -(iota + 1)
23)
24
25const (
26	tokenError tokenType = iota
27	tokenEOF
28	tokenEmptyLine
29	tokenComment
30	tokenKey
31	tokenEquals
32	tokenString
33)
34
35func isSpace(r rune) bool {
36	return r == ' ' || r == '\t'
37}
38
39func isKeyStartChar(r rune) bool {
40	return !(isSpace(r) || r == '\r' || r == '\n' || r == eof)
41}
42
43// I'm not sure that this is correct
44func isKeyChar(r rune) bool {
45	// Keys start with the first character that isn't whitespace or [ and end
46	// with the last non-whitespace character before the equals sign. Keys
47	// cannot contain a # character."
48	return !(r == '\r' || r == '\n' || r == eof || r == '=')
49}