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fix(lsp): handle encoding bounds in str_utfindex_enc

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Problem:
str_utfindex_enc could return an error if the index was longer than the
line length. This was handled in each of the calls to it individually

Solution:
* Fix the call at the source level so that if the index is higher than
  the line length, utf length is returned
This commit is contained in:
tris203 2024-09-09 22:39:02 +01:00 committed by Mathias Fußenegger
parent 9ddfcb64bf
commit f279d1ae33
1 changed files with 9 additions and 8 deletions
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17
runtime/lua/vim/lsp/util.lua
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@ -119,6 +119,7 @@ end
---@param encoding string|nil utf-8|utf-16|utf-32|nil defaults to utf-16
---@return integer `encoding` index of `index` in `line`
function M._str_utfindex_enc(line, index, encoding)
local len32, len16 = vim.str_utfindex(line)
if not encoding then
encoding = 'utf-16'
end
@ -129,9 +130,15 @@ function M._str_utfindex_enc(line, index, encoding)
return #line
end
elseif encoding == 'utf-16' then
if not index or index > len16 then
return len16
end
local _, col16 = vim.str_utfindex(line, index)
return col16
elseif encoding == 'utf-32' then
if not index or index > len32 then
return len32
end
local col32, _ = vim.str_utfindex(line, index)
return col32
else
@ -171,8 +178,6 @@ function M._str_byteindex_enc(line, index, encoding)
end
end
local _str_utfindex_enc = M._str_utfindex_enc
--- Replaces text in a range with new text.
---
--- CAUTION: Changes in-place!
@ -1928,7 +1933,7 @@ local function make_position_param(window, offset_encoding)
return { line = 0, character = 0 }
end
col = _str_utfindex_enc(line, col, offset_encoding)
col = M._str_utfindex_enc(line, col, offset_encoding)
return { line = row, character = col }
end
@ -2110,11 +2115,7 @@ function M.character_offset(buf, row, col, offset_encoding)
)
offset_encoding = vim.lsp.get_clients({ bufnr = buf })[1].offset_encoding
end
-- If the col is past the EOL, use the line length.
if col > #line then
return _str_utfindex_enc(line, nil, offset_encoding)
end
return _str_utfindex_enc(line, col, offset_encoding)
return M._str_utfindex_enc(line, col, offset_encoding)
end
--- Helper function to return nested values in language server settings