-
Notifications
You must be signed in to change notification settings - Fork 0
/
parse.go
125 lines (103 loc) · 2.73 KB
/
parse.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
package snippet
import (
"bytes"
"fmt"
"strings"
"github.com/lunjon/gokdl"
)
var emptySnippet = Snippet{}
func parseKDL(bs []byte) ([]Snippet, error) {
doc, err := gokdl.Parse(bytes.NewReader(bs))
if err != nil {
return nil, err
}
snippets := []Snippet{}
for _, node := range doc.Nodes() {
sn, err := parseNode(node)
if err != nil {
return nil, err
}
snippets = append(snippets, sn)
}
return snippets, nil
}
func parseNode(node gokdl.Node) (Snippet, error) {
var aliases []string
var argSnippet string
var childSnippet string
errReturn := func(msg ...string) (Snippet, error) {
m := strings.Join(msg, " ")
return Snippet{}, fmt.Errorf("invalid snippet: %s: %s", node.Name, m)
}
if len(node.Args) == 1 {
val, ok := node.Args[0].Value.(string)
if !ok {
return errReturn("argument must be string")
}
argSnippet = val
}
if argSnippet == "" && len(node.Children) == 0 {
return errReturn("no snippet body found")
}
if len(node.Children) > 0 {
options := map[string]bool{}
for _, child := range node.Children {
key := child.Name
if options[key] {
return errReturn("duplicate option:", key)
}
switch key {
case "snippet":
// Check that there's a string arg, else invalid
if len(child.Args) != 1 {
return errReturn("expected snippet key to have one string argument")
}
val, ok := child.Args[0].Value.(string)
if !ok {
return errReturn("argument must be string")
}
childSnippet = val
options[key] = true
case "aliases":
fmt.Println("ALIAS", len(child.Args), len(child.Children))
if len(child.Children) > 0 {
return errReturn("invalid aliases: expected no children")
}
if len(child.Args) == 0 {
return errReturn("invalid aliases: no arguments")
}
for _, arg := range child.Args {
fmt.Println(arg.Value)
val, ok := arg.Value.(string)
if !ok {
return errReturn("alias must have type string")
}
val = strings.TrimSpace(val)
if val == "" {
return errReturn("invalid alias: empty string")
}
aliases = append(aliases, val)
}
default:
return errReturn("unknown option:", key)
}
}
}
argSnippet = strings.TrimSpace(argSnippet)
childSnippet = strings.TrimSpace(childSnippet)
var snippet string
if argSnippet != "" && childSnippet != "" {
return emptySnippet, fmt.Errorf("invalid snippet: %s: must not set snippet in arg and child", node.Name)
} else if argSnippet == "" && childSnippet == "" {
return emptySnippet, fmt.Errorf("invalid snippet: %s: no snippet body found", node.Name)
} else if argSnippet != "" {
snippet = argSnippet
} else {
snippet = childSnippet
}
return Snippet{
trigger: node.Name,
snippet: snippet,
aliases: aliases,
}, nil
}