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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
package editor
import (
"regexp"
"strings"
"glint/internal/spell"
)
// urlRe matches URLs and bare emails so their letters aren't spellchecked.
var urlRe = regexp.MustCompile(`(?:https?://|www\.|mailto:)\S+|\S+@\S+\.\S+`)
// wordRe matches a candidate word: a letter followed by letters or apostrophes
// (straight or curly), so possessives ride along with their base.
var wordRe = regexp.MustCompile(`\p{L}[\p{L}'’]*`)
// SetDict gives the editor a loaded dictionary; spellcheck is inert until one is
// set. SetSpell toggles the user preference.
func (e *Editor) SetDict(d *spell.Dict) {
e.dict = d
e.spellCache = map[string]bool{}
e.invalidate()
}
// SetSpell sets whether spellcheck is enabled for the session.
func (e *Editor) SetSpell(on bool) { e.spellOn = on; e.invalidate() }
// ToggleSpell flips spellcheck and returns the new state.
func (e *Editor) ToggleSpell() bool { e.spellOn = !e.spellOn; e.invalidate(); return e.spellOn }
// SpellEnabled reports the user's session toggle (independent of whether a dict
// is loaded or the file is code).
func (e *Editor) SpellEnabled() bool { return e.spellOn }
// spellActive reports whether spellcheck should actually run: enabled, a
// dictionary is loaded, and the buffer is prose (not a recognized code file,
// which reuses the TASK-018 extension routing via codeFile).
func (e *Editor) spellActive() bool {
return e.spellOn && e.dict != nil && e.codeFile == ""
}
// AddToDictionary adds the word to the personal dictionary and invalidates the
// spell cache so its underline clears on the next render.
func (e *Editor) AddToDictionary(word string) error {
if e.dict == nil {
return nil
}
err := e.dict.Add(word)
e.spellCache = map[string]bool{} // membership changed; drop cached verdicts
e.invalidate()
return err
}
// spellKnown is a cached membership test; the cache is dropped when the personal
// dictionary changes. Session-ignored words always count as known.
func (e *Editor) spellKnown(word string) bool {
lw := strings.ToLower(word)
if e.spellIgnore[lw] {
return true
}
if v, ok := e.spellCache[lw]; ok {
return v
}
k := e.dict.Known(lw)
if e.spellCache == nil {
e.spellCache = map[string]bool{}
}
e.spellCache[lw] = k
return k
}
// IgnoreWord marks word correct for this session only (the popup's Ignore
// action); it is not written to the personal dictionary.
func (e *Editor) IgnoreWord(word string) {
if e.spellIgnore == nil {
e.spellIgnore = map[string]bool{}
}
e.spellIgnore[strings.ToLower(word)] = true
e.invalidate()
}
// Suggest returns up to max spelling corrections for word, or nil without a
// dictionary.
func (e *Editor) Suggest(word string, max int) []string {
if e.dict == nil {
return nil
}
return e.dict.Suggest(word, max)
}
// FlaggedWordAt returns the misspelled word covering rune column col on the given
// row (inclusive of the column just past the word, so a cursor resting at the
// word's end still resolves it), plus its rune range [start,end). ok is false
// when spellcheck is inactive or no flagged word is there.
func (e *Editor) FlaggedWordAt(row, col int) (word string, start, end int, ok bool) {
if !e.spellActive() || row < 0 || row >= len(e.Lines) {
return "", 0, 0, false
}
all := ScanLines(e.Lines, e.theme)
all = e.spellPass(all)
pos := 0
for _, sp := range all[row] {
n := len([]rune(sp.Text))
if sp.Wavy && col >= pos && col <= pos+n {
return sp.Text, pos, pos + n, true
}
pos += n
}
return "", 0, 0, false
}
// ReplaceWordAt swaps the rune range [start,end) on row for replacement, parks
// the cursor after it, marks the buffer dirty, and records an undo checkpoint.
func (e *Editor) ReplaceWordAt(row, start, end int, replacement string) {
if row < 0 || row >= len(e.Lines) {
return
}
e.PushUndo()
r := []rune(e.Lines[row])
if start < 0 || end > len(r) || start > end {
return
}
e.Lines[row] = string(r[:start]) + replacement + string(r[end:])
e.invalidate()
e.Cursor = Position{Row: row, Col: start + len([]rune(replacement))}
e.anchor = nil
e.Dirty = true
e.setGoal()
e.followCursor()
}
// spellPass splits every prose span into words and re-emits misspelled ones as
// Wavy (undercurl) spans, leaving all other spans untouched. The per-line span
// text is unchanged, so the markup-visible invariant holds.
func (e *Editor) spellPass(all [][]Span) [][]Span {
for li, spans := range all {
var out []Span
changed := false
for _, sp := range spans {
if !sp.Prose {
out = append(out, sp)
continue
}
split := e.splitProse(sp)
if len(split) != 1 {
changed = true
}
out = append(out, split...)
}
if changed {
all[li] = out
}
}
return all
}
// splitProse partitions one prose span's text, marking misspelled words with the
// theme's undercurl. Words inside URLs/emails, acronyms, camel/brand casing, and
// words under three letters are left alone. When nothing is misspelled the
// original span is returned unchanged.
func (e *Editor) splitProse(sp Span) []Span {
text := sp.Text
skips := urlRe.FindAllStringIndex(text, -1)
var out []Span
last := 0
emit := func(s string, wavy bool) {
if s == "" {
return
}
ns := sp
ns.Text = s
ns.Wavy = wavy
if wavy {
ns.UnderColor = e.theme.Spell
}
out = append(out, ns)
}
for _, w := range wordRe.FindAllStringIndex(text, -1) {
word := text[w[0]:w[1]]
if overlapsAny(w, skips) || !checkableWord(word) || e.spellKnown(word) {
continue
}
emit(text[last:w[0]], false)
emit(word, true)
last = w[1]
}
if last == 0 {
return []Span{sp} // nothing flagged
}
emit(text[last:], false)
return out
}
// overlapsAny reports whether byte range r overlaps any range in rs.
func overlapsAny(r []int, rs [][]int) bool {
for _, s := range rs {
if r[0] < s[1] && s[0] < r[1] {
return true
}
}
return false
}
// checkableWord filters out tokens that aren't ordinary prose words: anything
// under three letters, all-caps acronyms (NASA, API), and internal-capital
// brand/camelCase (iOS, GitHub). Only the first letter may be uppercase.
func checkableWord(w string) bool {
r := []rune(w)
if len(r) < 3 {
return false
}
allUpper := true
for i, c := range r {
if c >= 'a' && c <= 'z' || c == '\'' || c == '’' {
allUpper = false
}
if i > 0 && c >= 'A' && c <= 'Z' {
return false // internal uppercase: brand / camelCase
}
}
return !allUpper
}
|