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comparison vendor/github.com/yosssi/gcss/line.go @ 66:787b5ee0289d draft

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Use vendored modules Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>
author yakumo.izuru
date Sun, 23 Jul 2023 13:18:53 +0000
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65:6d985efa0f7a 66:787b5ee0289d
1 package gcss
2
3 import (
4 "fmt"
5 "strings"
6 )
7
8 const unicodeSpace = 32
9
10 const indentTop = 0
11
12 // line represents a line of codes.
13 type line struct {
14 no int
15 s string
16 indent int
17 }
18
19 // isEmpty returns true if the line's s is zero value.
20 func (ln *line) isEmpty() bool {
21 return strings.TrimSpace(ln.s) == ""
22 }
23
24 // isTopIndent returns true if the line's indent is the top level.
25 func (ln *line) isTopIndent() bool {
26 return ln.indent == indentTop
27 }
28
29 // childOf returns true if the line is a child of the parent.
30 func (ln *line) childOf(parent element) (bool, error) {
31 var ok bool
32 var err error
33
34 switch pIndent := parent.Base().ln.indent; {
35 case ln.indent == pIndent+1:
36 ok = true
37 case ln.indent > pIndent+1:
38 err = fmt.Errorf("indent is invalid [line: %d]", ln.no)
39 }
40
41 return ok, err
42 }
43
44 // isDeclaration returns true if the line is a declaration.
45 func (ln *line) isDeclaration() bool {
46 _, _, err := declarationPV(ln)
47 return err == nil
48 }
49
50 // isAtRule returns true if the line is an at-rule.
51 func (ln *line) isAtRule() bool {
52 return strings.HasPrefix(strings.TrimSpace(ln.s), atMark)
53 }
54
55 // isVariable returns true if the line is a variable.
56 func (ln *line) isVariable() bool {
57 if !ln.isTopIndent() {
58 return false
59 }
60
61 _, _, err := variableNV(ln)
62
63 return err == nil
64 }
65
66 // isMixinDeclaration returns true if the line is a mixin declaration.
67 func (ln *line) isMixinDeclaration() bool {
68 if !ln.isTopIndent() {
69 return false
70 }
71
72 _, _, err := mixinNP(ln, true)
73
74 return err == nil
75 }
76
77 // isMixinInvocation returns true if the line is a mixin invocation.
78 func (ln *line) isMixinInvocation() bool {
79 if ln.isTopIndent() {
80 return false
81 }
82
83 _, _, err := mixinNP(ln, false)
84
85 return err == nil
86 }
87
88 // isComment returns true if the line is a comment.
89 func (ln *line) isComment() bool {
90 return strings.HasPrefix(strings.TrimSpace(ln.s), doubleSlash)
91 }
92
93 // newLine creates and returns a line.
94 func newLine(no int, s string) *line {
95 return &line{
96 no: no,
97 s: s,
98 indent: indent(s),
99 }
100 }
101
102 // indent returns the string's indent.
103 func indent(s string) int {
104 var i int
105
106 for _, b := range s {
107 if b != unicodeSpace {
108 break
109 }
110 i++
111 }
112
113 return i / 2
114 }