diff options
Diffstat (limited to 'runtime/lua/vim/lsp/sync.lua')
| -rw-r--r-- | runtime/lua/vim/lsp/sync.lua | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/runtime/lua/vim/lsp/sync.lua b/runtime/lua/vim/lsp/sync.lua index f185e3973f..9955fff3e2 100644 --- a/runtime/lua/vim/lsp/sync.lua +++ b/runtime/lua/vim/lsp/sync.lua @@ -74,6 +74,7 @@ local function byte_to_utf(line, byte, offset_encoding) return utf_idx + 1 end +---@private local function compute_line_length(line, offset_encoding) local length local _ @@ -104,15 +105,16 @@ local function align_end_position(line, byte, offset_encoding) char = compute_line_length(line, offset_encoding) + 1 else -- Modifying line, find the nearest utf codepoint - local offset = str_utf_end(line, byte) + local offset = str_utf_start(line, byte) -- If the byte does not fall on the start of the character, then -- align to the start of the next character. - if offset > 0 then - char = byte_to_utf(line, byte, offset_encoding) + 1 - byte = byte + offset - else + if offset < 0 then + byte = byte + str_utf_end(line, byte) + 1 + end + if byte <= #line then char = byte_to_utf(line, byte, offset_encoding) - byte = byte + offset + else + char = compute_line_length(line, offset_encoding) + 1 end -- Extending line, find the nearest utf codepoint for the last valid character end @@ -129,13 +131,30 @@ end ---@param offset_encoding string utf-8|utf-16|utf-32|nil (fallback to utf-8) ---@returns table<int, int> line_idx, byte_idx, and char_idx of first change position local function compute_start_range(prev_lines, curr_lines, firstline, lastline, new_lastline, offset_encoding) + local char_idx + local byte_idx -- If firstline == lastline, no existing text is changed. All edit operations -- occur on a new line pointed to by lastline. This occurs during insertion of -- new lines(O), the new newline is inserted at the line indicated by -- new_lastline. - -- If firstline == new_lastline, the first change occured on a line that was deleted. + if firstline == lastline then + local line_idx + local line = prev_lines[firstline - 1] + if line then + line_idx = firstline - 1 + byte_idx = #line + 1 + char_idx = compute_line_length(line, offset_encoding) + 1 + else + line_idx = firstline + byte_idx = 1 + char_idx = 1 + end + return { line_idx = line_idx, byte_idx = byte_idx, char_idx = char_idx } + end + + -- If firstline == new_lastline, the first change occurred on a line that was deleted. -- In this case, the first byte change is also at the first byte of firstline - if firstline == new_lastline or firstline == lastline then + if firstline == new_lastline then return { line_idx = firstline, byte_idx = 1, char_idx = 1 } end @@ -156,8 +175,6 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline, end -- Convert byte to codepoint if applicable - local char_idx - local byte_idx if start_byte_idx == 1 or (#prev_line == 0 and start_byte_idx == 1)then byte_idx = start_byte_idx char_idx = 1 @@ -166,7 +183,7 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline, char_idx = compute_line_length(prev_line, offset_encoding) + 1 else byte_idx = start_byte_idx + str_utf_start(prev_line, start_byte_idx) - char_idx = byte_to_utf(prev_line, start_byte_idx, offset_encoding) + char_idx = byte_to_utf(prev_line, byte_idx, offset_encoding) end -- Return the start difference (shared for new and prev lines) @@ -187,7 +204,7 @@ end ---@param offset_encoding string ---@returns (int, int) end_line_idx and end_col_idx of range local function compute_end_range(prev_lines, curr_lines, start_range, firstline, lastline, new_lastline, offset_encoding) - -- If firstline == new_lastline, the first change occured on a line that was deleted. + -- If firstline == new_lastline, the first change occurred on a line that was deleted. -- In this case, the last_byte... if firstline == new_lastline then return { line_idx = (lastline - new_lastline + firstline), byte_idx = 1, char_idx = 1 }, { line_idx = firstline, byte_idx = 1, char_idx = 1 } @@ -296,7 +313,7 @@ end ---@private -- rangelength depends on the offset encoding --- bytes for utf-8 (clangd with extenion) +-- bytes for utf-8 (clangd with extension) -- codepoints for utf-16 -- codeunits for utf-32 -- Line endings count here as 2 chars for \r\n (dos), 1 char for \n (unix), and 1 char for \r (mac) |