Reduce the time spent to build the request when there are a lot of buffers by:
- using the options property on the buffer object to get the mod variable
instead of evaluating getbufvar;
- not computing the buffer filepath if the buffer is not modified;
- passing the number of the unloaded buffer instead of its filepath on the
BufferUnload event. Getting the Python buffer object from its number is
easier than from its filepath.
Now that the server supports Java natively, we need to use a
filetype that does not have native support to ensure that we call the
mocked omnifunc, but also one for which YCM has a semantic trigger.
Rather than picking another random languagse, which might break in the
future, we invent a language (ycmtest) and supply a manual trigger
mapping to the YouCompleteMe object.
[READY] Always supply working directory
This allows completer servers to detect the correct directory to launch
no matter what request initialises the completer server.
# PR Prelude
Thank you for working on YCM! :)
**Please complete these steps and check these boxes (by putting an `x` inside
the brackets) _before_ filing your PR:**
- [X] I have read and understood YCM's [CONTRIBUTING][cont] document.
- [X] I have read and understood YCM's [CODE_OF_CONDUCT][code] document.
- [X] I have included tests for the changes in my PR. If not, I have included a
rationale for why I haven't.
- [X] **I understand my PR may be closed if it becomes obvious I didn't
actually perform all of these steps.**
# Why this change is necessary and useful
This change ensures that the client supplies the working directory to the server on each request, in particular, event notifications; the java and javascript completers use this to start the server in the `FileReadyToParse` event, rather than on construction of the completer. The subtle difference allows them to use the client's working directory, rather than the _server's_ working directory to do things like project detection.
See also:
* This is PR 1 of the set of changes related to #2827 - client changes required to support Java and other language-server protocols.
* ycmd change for javascript that makes use of this now: https://github.com/Valloric/ycmd/pull/886
* updated API doc: http://puremourning.github.io/ycmd-1
The ycmd API change is simply to allow `working_dir` on all requests.
cc for minor optional API change: @abingham @Qusic @LuckyGeck @mawww @richard1122 @jakeanq @orsonteodoro
[cont]: https://github.com/Valloric/YouCompleteMe/blob/master/CONTRIBUTING.md
[code]: https://github.com/Valloric/YouCompleteMe/blob/master/CODE_OF_CONDUCT.md
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2861)
<!-- Reviewable:end -->
When no argument is given to the YcmToggleLogs command, instead of displaying
the list of available logfiles, prompt the user to open (or close if already
open) one of them.
On Windows, Vim returns buffer filepaths with forward slashes instead of
backward ones if the shellslash option is set. Since we always expect backward
slashes from the server, we normalize these paths.
The VimExpressionToPythonType function automatically convert a number
represented as a string to an integer. This causes an error when used to
evaluate a filetype set to a number as the result is split on the dot character
to get a list of filetypes and an integer cannot be split. Use vim.eval and
ToUnicode instead.
If no buffer exists for a given filename, the GetBufferNumberForFilename
function will create a buffer for that file by default. This behavior is
unexpected given the name of that function and may lead to performance issues
when ycmd returns diagnostics for a lot of files with no corresponding buffers.
The default behavior for that function should be to not create a buffer.
On Windows, the options file cannot be deleted while it is still open by
another process. Close the file before starting the server. Do not explicitly
flush the file as closing implies flushing.
[READY] Improve path to python interpreter error handling
YCM returns the cryptic error `YouCompleteMe unavailable: [Errno 2] No such file or directory` when the Python interpreter path used to start the server doesn't exist. See issues https://github.com/Valloric/YouCompleteMe/issues/2773 and https://github.com/Valloric/YouCompleteMe/issues/2775.
This PR improves that by using the `FindExecutable` and `GetExecutable` functions from ycmd to check if the Python interpreter path exists (and is an executable) and by returning a much more helpful message if it doesn't. We use `FindExecutable` instead of `GetExecutable` on the `g:ycm_server_python_interpreter` option so that the user can specify a Python path with just the executable name (e.g. `python`, `python2`, `python3`).
This also fixes a Python traceback in Vim that occurs when, after successfully starting the server, the `g:ycm_server_python_interpreter` option is set to an invalid path and the server is restarted with `:YcmRestartServer`. Steps to reproduce are:
- start Vim with a working YCM;
- type `:let g:ycm_server_python_interpreter = '/invalid/python/path'`;
- type `:YcmRestartServer`.
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2787)
<!-- Reviewable:end -->
Calling directly the omnifunc may move the cursor position. This is the case
with the default Vim omnifunc for C-family languages (ccomplete#Complete) which
calls searchdecl to find a declaration. This function is supposed to move the
cursor to the found declaration but it doesn't when called through the omni
completion mapping (CTRL-X CTRL-O). So, we restore the cursor position after
calling the omnifunc.
[READY] Fix unicode warning when jumping on Python 2
On Python 2, jumping in a file whose path contains non-ASCII characters raises the following warnings:
```
Error detected while processing function <SNR>26_CompleterCommand:
line 18:
python\ycm\vimsupport.py:400: UnicodeWarning: Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
if filename != GetCurrentBufferFilepath():
python\ycm\vimsupport.py:375: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
if win.buffer.name == filepath:
```
This happens because, in the `JumpToLocation` function, we are comparing a unicode object (`filename` and `filepath`) with a Vim buffer name (`vim.current.buffer.name` returned by `GetCurrentBufferFilepath` and `win.buffer.name` where `win` is a Vim window) which is a byte object on Python 2.
For now, this PR adds tests covering the `JumpToLocation` function with unicode paths. They will raise the warnings on Python 2 and will fail because warnings are now treated as errors in tests. I'll update the PR with the fix once the builds are done.
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2702)
<!-- Reviewable:end -->
The 'hidden' option is a global option, not a buffer one. If this option is
false, we should check if the 'bufhidden' option, which is local to the buffer,
is set to 'hide'. If so, the buffer can be hidden despite the 'hidden' option
being false.
Bring fully asynchronous completion by polling for completions with a timer
then calling completefunc once the completions are ready. Use the start column
returned by the server in completefunc. Immediately display the last completion
on the TextChangedI event to prevent the popup menu disappearing while waiting
for the completions. Handle the TextChangedI event not being triggered while
the completion menu is open by closing the menu when inserting a character
through the InsertCharPre event, and when deleting a character on the <BS> and
<C-h> keys.
[READY] Use codepoint offsets in identifier functions
`CurrentIdentifierFinished` and `LastEnteredCharIsIdentifierChar` incorrectly use byte offsets with unicode lines (`CurrentColumn` returns a byte offset and `CurrentLineContents` a unicode string). This leads to weird bugs when there is a non-ASCII character on the current line:
This is fixed by converting byte offsets to codepoint ones through the `ByteOffsetToCodepointOffset` function.
This changes the behavior of these two functions when the current column position is invalid. Both functions returned false in that case. They now return as if the current column were at the end of the line. In practice, this doesn't really matter since the position of the current column should always be valid.
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2690)
<!-- Reviewable:end -->
CurrentIdentifierFinished and LastEnteredCharIsIdentifierChar incorrectly use
byte offsets with unicode lines. Convert those offsets to codepoint offsets.
[READY] Moved change tracking to python. Per buffer diagnostics
Thank you for working on YCM! :)
- [x] I have read and understood YCM's [CONTRIBUTING][cont] document.
- [x] I have read and understood YCM's [CODE_OF_CONDUCT][code] document.
- [x] I have included tests for the changes in my PR. If not, I have included a
rationale for why I haven't.
- [x] **I understand my PR may be closed if it becomes obvious I didn't
actually perform all of these steps.**
Adds an emulation of Vim buffer object and moves change tracking into python.
Now diagnostics are stored per buffer, which effectively solves #2165 .
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2631)
<!-- Reviewable:end -->
coverage.py 4.4 removed the path from the filename attribute in its reports.
This leads to incorrect coverage from codecov as it relies on this attribute to
find the source file. Require coverage.py older than version 4.4.
