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comparison vendor/github.com/yosssi/gcss/mixin_declaration.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 "io"
6 "strings"
7 )
8
9 // mixinDeclaration represents a mixin declaration.
10 type mixinDeclaration struct {
11 elementBase
12 name string
13 paramNames []string
14 }
15
16 // WriteTo writes the selector to the writer.
17 func (md *mixinDeclaration) WriteTo(w io.Writer) (int64, error) {
18 return 0, nil
19 }
20
21 // mixinNP extracts a mixin name and parameters from the line.
22 func mixinNP(ln *line, isDeclaration bool) (string, []string, error) {
23 s := strings.TrimSpace(ln.s)
24
25 if !strings.HasPrefix(s, dollarMark) {
26 return "", nil, fmt.Errorf("mixin must start with %q [line: %d]", dollarMark, ln.no)
27 }
28
29 s = strings.TrimPrefix(s, dollarMark)
30
31 np := strings.Split(s, openParenthesis)
32
33 if len(np) != 2 {
34 return "", nil, fmt.Errorf("mixin's format is invalid [line: %d]", ln.no)
35 }
36
37 paramsS := strings.TrimSpace(np[1])
38
39 if !strings.HasSuffix(paramsS, closeParenthesis) {
40 return "", nil, fmt.Errorf("mixin must end with %q [line: %d]", closeParenthesis, ln.no)
41 }
42
43 paramsS = strings.TrimSuffix(paramsS, closeParenthesis)
44
45 if strings.Index(paramsS, closeParenthesis) != -1 {
46 return "", nil, fmt.Errorf("mixin's format is invalid [line: %d]", ln.no)
47 }
48
49 var params []string
50
51 if paramsS != "" {
52 params = strings.Split(paramsS, comma)
53 }
54
55 for i, p := range params {
56 p = strings.TrimSpace(p)
57
58 if isDeclaration {
59 if !strings.HasPrefix(p, dollarMark) {
60 return "", nil, fmt.Errorf("mixin's parameter must start with %q [line: %d]", dollarMark, ln.no)
61 }
62
63 p = strings.TrimPrefix(p, dollarMark)
64 }
65
66 params[i] = p
67 }
68
69 return np[0], params, nil
70 }
71
72 // newMixinDeclaration creates and returns a mixin declaration.
73 func newMixinDeclaration(ln *line, parent element) (*mixinDeclaration, error) {
74 name, paramNames, err := mixinNP(ln, true)
75
76 if err != nil {
77 return nil, err
78 }
79
80 return &mixinDeclaration{
81 elementBase: newElementBase(ln, parent),
82 name: name,
83 paramNames: paramNames,
84 }, nil
85 }