+36
-10
lines changedFilter options
+36
-10
lines changed Original file line number Diff line number Diff line change
@@ -131,13 +131,22 @@ end
131 131
---@param offset_encoding string utf-8|utf-16|utf-32|nil (fallback to utf-8)
132 132
---@returns table<int, int> line_idx, byte_idx, and char_idx of first change position
133 133
local function compute_start_range(prev_lines, curr_lines, firstline, lastline, new_lastline, offset_encoding)
134 +
local char_idx
135 +
local byte_idx
134 136
-- If firstline == lastline, no existing text is changed. All edit operations
135 137
-- occur on a new line pointed to by lastline. This occurs during insertion of
136 138
-- new lines(O), the new newline is inserted at the line indicated by
137 139
-- new_lastline.
140 +
if firstline == lastline then
141 +
local line = prev_lines[firstline - 1]
142 +
byte_idx = #line + 1
143 +
char_idx = compute_line_length(line, offset_encoding) + 1
144 +
return { line_idx = firstline - 1, byte_idx = byte_idx, char_idx = char_idx }
145 +
end
146 + 138 147
-- If firstline == new_lastline, the first change occurred on a line that was deleted.
139 148
-- In this case, the first byte change is also at the first byte of firstline
140 -
if firstline == new_lastline or firstline == lastline then
149 +
if firstline == new_lastline then
141 150
return { line_idx = firstline, byte_idx = 1, char_idx = 1 }
142 151
end
143 152
@@ -158,8 +167,6 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline,
158 167
end
159 168 160 169
-- Convert byte to codepoint if applicable
161 -
local char_idx
162 -
local byte_idx
163 170
if start_byte_idx == 1 or (#prev_line == 0 and start_byte_idx == 1)then
164 171
byte_idx = start_byte_idx
165 172
char_idx = 1
@@ -207,16 +207,16 @@ describe('incremental synchronization', function()
207 207
{
208 208
range = {
209 209
['start'] = {
210 -
character = 0,
211 -
line = 1
210 +
character = 11,
211 +
line = 0,
212 212
},
213 213
['end'] = {
214 214
character = 0,
215 215
line = 1
216 216
}
217 217
},
218 -
rangeLength = 0,
219 -
text = 'hello world\n'
218 +
rangeLength = 1,
219 +
text = '\nhello world\n'
220 220
}
221 221
}
222 222
test_edit({"hello world"}, {"yyp"}, expected_text_changes, 'utf-16', '\n')
@@ -226,19 +226,38 @@ describe('incremental synchronization', function()
226 226
{
227 227
range = {
228 228
['start'] = {
229 +
character = 11,
230 +
line = 0
231 +
},
232 +
['end'] = {
229 233
character = 0,
230 234
line = 1
235 +
}
236 +
},
237 +
rangeLength = 1,
238 +
text = '\n\n'
239 +
}
240 +
}
241 +
test_edit({"hello world"}, {"o"}, expected_text_changes, 'utf-16', '\n')
242 +
end)
243 +
it('adding a line to an empty buffer', function()
244 +
local expected_text_changes = {
245 +
{
246 +
range = {
247 +
['start'] = {
248 +
character = 0,
249 +
line = 0
231 250
},
232 251
['end'] = {
233 252
character = 0,
234 253
line = 1
235 254
}
236 255
},
237 -
rangeLength = 0,
238 -
text = '\n'
256 +
rangeLength = 1,
257 +
text = '\n\n'
239 258
}
240 259
}
241 -
test_edit({"hello world"}, {"o"}, expected_text_changes, 'utf-16', '\n')
260 +
test_edit({""}, {"o"}, expected_text_changes, 'utf-16', '\n')
242 261
end)
243 262
end)
244 263
describe('multi line edit', function()
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