Commit Graph

21 Commits

Author SHA1 Message Date
Ilya Biryukov 8a0f76b855 [clangd] Fetch documentation from the Index during signature help
Summary:
Sema can only be used for documentation in the current file, other doc
comments should be fetched from the index.

Reviewers: hokein, ioeric, kadircet

Reviewed By: hokein, kadircet

Subscribers: MaskRay, jkorous, mgrang, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D50727

llvm-svn: 340005
2018-08-17 09:32:30 +00:00
Kirill Bobyrev 8e35f1e7cb NFC: Enforce good formatting across multiple clang-tools-extra files
This patch improves readability of multiple files in clang-tools-extra
and enforces LLVM Coding Guidelines.

Reviewed by: ioeric

Differential Revision: https://reviews.llvm.org/D50707

llvm-svn: 339687
2018-08-14 16:03:32 +00:00
Kadir Cetinkaya a9c9d00016 [clangd] Support textEdit in addition to insertText.
Summary:
Completion replies contains textEdits as well. Note that this change
relies on https://reviews.llvm.org/D50443.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: mgrang, ioeric, MaskRay, jkorous, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D50449

llvm-svn: 339543
2018-08-13 08:23:01 +00:00
Kadir Cetinkaya 2f84d91131 Added functionality to suggest FixIts for conversion of '->' to '.' and vice versa.
Summary: Added functionality to suggest FixIts for conversion of '->' to '.' and vice versa.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: yvvan, ioeric, jkorous, arphaman, cfe-commits, kadircet

Differential Revision: https://reviews.llvm.org/D50193

llvm-svn: 339224
2018-08-08 08:59:29 +00:00
Eric Liu 5d2a807f25 [clangd] Penalize non-instance members when accessed via class instances.
Summary:
The following are metrics for explicit member access completions. There is no
noticeable impact on other completion types.

Before:
EXPLICIT_MEMBER_ACCESS
  Total measurements: 24382
  All measurements: MRR: 62.27	Top10: 80.21%	Top-100: 94.48%
  Full identifiers: MRR: 98.81	Top10: 99.89%	Top-100: 99.95%
  0-5 filter len:
	MRR:  13.25	46.31	62.47	67.77	70.40	81.91
	Top-10:  29%	74%	84%	91%	91%	97%
	Top-100:  67%	99%	99%	99%	99%	100%

After:
EXPLICIT_MEMBER_ACCESS
  Total measurements: 24382
  All measurements: MRR: 63.18	Top10: 80.58%	Top-100: 95.07%
  Full identifiers: MRR: 98.79	Top10: 99.89%	Top-100: 99.95%
  0-5 filter len:
	MRR:  13.84	48.39	63.55	68.83	71.28	82.64
	Top-10:  30%	75%	84%	91%	91%	97%
	Top-100:  70%	99%	99%	99%	99%	100%

* Top-N: wanted result is found in the first N completion results.
* MRR: Mean reciprocal rank.

Remark: the change seems to have minor positive impact. Although the improvement
is relatively small, down-ranking non-instance members in instance member access
should reduce noise in the completion results.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D49543

llvm-svn: 337681
2018-07-23 10:56:37 +00:00
Sam McCall 2161ec7ee2 [clangd] Track origins of symbols (various indexes, Sema).
Summary: Surface it in the completion items C++ API, and when a flag is set.

Reviewers: ioeric

Subscribers: ilya-biryukov, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48938

llvm-svn: 336309
2018-07-05 06:20:41 +00:00
Sam McCall 3f0243fdaf [clangd] Incorporate transitive #includes into code complete proximity scoring.
Summary:
We now compute a distance from the main file to the symbol header, which
is a weighted count of:
 - some number of #include traversals from source file --> included file
 - some number of FS traversals from file --> parent directory
 - some number of FS traversals from parent directory --> child file/dir
This calculation is performed in the appropriate URI scheme.

This means we'll get some proximity boost from header files in main-file
contexts, even when these are in different directory trees.

This extended file proximity model is not yet incorporated in the index
interface/implementation.

Reviewers: ioeric

Subscribers: mgorny, ilya-biryukov, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48441

llvm-svn: 336177
2018-07-03 08:09:29 +00:00
Sam McCall e746a2b4f7 [clangd] ClangdServer::codeComplete return CodeCompleteResult, not LSP struct.
Summary:
This provides more structured information that embedders can use for rendering.
ClangdLSPServer continues to call render(), so NFC.

The patch is:
 - trivial changes to ClangdServer/ClangdLSPServer
 - mostly-mechanical updates to CodeCompleteTests etc for the new API
 - new direct tests of render() in CodeCompleteTests
 - tiny cleanups to CodeCompletionItem (operator<< and missing initializers)

Reviewers: ioeric

Subscribers: ilya-biryukov, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48821

llvm-svn: 336094
2018-07-02 11:13:16 +00:00
Sam McCall 27c979ace0 [clangd] codeComplete returns more structured completion items, LSP. NFC.
Summary:
LSP has some presentational fields with limited semantics (e.g. 'detail') and
doesn't provide a good place to return information like namespace.

Some places where more detailed information is useful:
 - tools like quality analysis
 - alternate frontends that aren't strictly LSP
 - code completion unit tests

In this patch, ClangdServer::codeComplete still return LSP CompletionList, but
I plan to switch that soon (should be a no-op for ClangdLSPServer).

Deferring this makes it clear that we don't change behavior (tests stay the
same) and also keeps the API break to a small patch which can be reverted.

Reviewers: ioeric

Subscribers: ilya-biryukov, MaskRay, cfe-commits, jkorous

Differential Revision: https://reviews.llvm.org/D48762

llvm-svn: 335980
2018-06-29 14:47:57 +00:00
Eric Liu 8f3678dbab [clangd] UI for completion items that would trigger include insertion.
Summary:
For completion items that would trigger include insertions (i.e. index symbols
that are not #included yet), add a visual indicator "+" before the completion
label. The inserted headers will appear in the completion detail.

Open to suggestions for better visual indicators; "+" was picked because it
seems cleaner than a few other candidates I've tried (*, #, @ ...).

The displayed header would be like a/b/c.h (without quote) or <vector> for system
headers. I didn't add quotation or "#include" because they can take up limited
space and do not provide additional information after users know what the
headers are. I think a header alone should be obvious for users to infer that
this is an include header..

To align indentation, also prepend ' ' to labels of candidates that would not
trigger include insertions (only for completions where index results are
possible).

Vim:
{F6357587}

vscode:
{F6357589}
{F6357591}

Reviewers: sammccall, ilya-biryukov, hokein

Reviewed By: sammccall

Subscribers: MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48163

llvm-svn: 334828
2018-06-15 13:34:18 +00:00
Sam McCall c18c280d23 [clangd] Add option to fold overloads into a single completion item.
Summary:
Adds a CodeCompleteOption to folds together compatible function/method overloads
into a single item. This feels pretty good (for editors with signatureHelp
support), but has limitations.

This happens in the code completion merge step, so there may be inconsistencies
(e.g. if only one overload made it into the index result list, no folding).

We don't want to bundle together completions that have different side-effects
(include insertion), because we can't constructo a coherent CompletionItem.
This may be confusing for users, as the reason for non-bundling may not
be immediately obvious. (Also, the implementation seems a little fragile)

Subscribers: ilya-biryukov, ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D47957

llvm-svn: 334822
2018-06-15 11:06:29 +00:00
Marc-Andre Laperle 945b5a3df0 [clangd] Add "member" symbols to the index
Summary:
This adds more symbols to the index:
- member variables and functions
- enum constants in scoped enums

The code completion behavior should remain intact but workspace symbols should
now provide much more useful symbols.
Other symbols should be considered such as the ones in "main files" (files not
being included) but this can be done separately as this introduces its fair
share of problems.

Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>

Reviewers: ioeric, sammccall

Reviewed By: ioeric, sammccall

Subscribers: hokein, sammccall, jkorous, klimek, ilya-biryukov, jkorous-apple, ioeric, MaskRay, cfe-commits

Differential Revision: https://reviews.llvm.org/D44954

llvm-svn: 334017
2018-06-05 14:01:40 +00:00
Ilya Biryukov 43714504a8 [clangd] Retrieve minimally formatted comment text in completion.
Summary:
Previous implementation used to extract brief text from doxygen comments.
Brief text parsing slows down completion and is not suited for
non-doxygen comments.

This commit switches to providing comments that mimic the ones
originally written in the source code, doing minimal reindenting and
removing the comments markers to make the output more user-friendly.

It means we lose support for doxygen-specific features, e.g. extracting
brief text, but provide useful results for non-doxygen comments.
Switching the doxygen support back is an option, but I suggest to see
whether the current approach gives more useful results.

Reviewers: sammccall, hokein, ioeric

Reviewed By: sammccall

Subscribers: klimek, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D45999

llvm-svn: 332459
2018-05-16 12:32:44 +00:00
Eric Liu 63f419a5c6 [clangd] Populate #include insertions as additional edits in completion items.
Summary:
o Remove IncludeInsertion LSP command.
o Populate include insertion edits synchromously in completion items.
o Share the code completion compiler instance and precompiled preamble to get existing inclusions in main file.
o Include insertion logic lives only in CodeComplete now.
o Use tooling::HeaderIncludes for inserting new includes.
o Refactored tests.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: klimek, ilya-biryukov, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D46497

llvm-svn: 332363
2018-05-15 15:29:32 +00:00
Sam McCall d1a7a37c22 [clangd] Pass Context implicitly using TLS.
Summary:
Instead of passing Context explicitly around, we now have a thread-local
Context object `Context::current()` which is an implicit argument to
every function.
Most manipulation of this should use the WithContextValue helper, which
augments the current Context to add a single KV pair, and restores the
old context on destruction.

Advantages are:
- less boilerplate in functions that just propagate contexts
- reading most code doesn't require understanding context at all, and
  using context as values in fewer places still
- fewer options to pass the "wrong" context when it changes within a
  scope (e.g. when using Span)
- contexts pass through interfaces we can't modify, such as VFS
- propagating contexts across threads was slightly tricky (e.g.
  copy vs move, no move-init in lambdas), and is now encapsulated in
  the threadpool

Disadvantages are all the usual TLS stuff - hidden magic, and
potential for higher memory usage on threads that don't use the
context. (In practice, it's just one pointer)

Reviewers: ilya-biryukov

Subscribers: klimek, jkorous-apple, ioeric, cfe-commits

Differential Revision: https://reviews.llvm.org/D42517

llvm-svn: 323872
2018-01-31 13:40:48 +00:00
Sam McCall d8169a85cc [clangd] Remove unused IncludeGlobals completion option, always pass true to sema
llvm-svn: 322856
2018-01-18 15:31:30 +00:00
Sam McCall 0faecf0c33 [clangd] Merge results from static/dynamic index.
Summary:
We now hide the static/dynamic split from the code completion, behind a
new implementation of the SymbolIndex interface. This will reduce the
complexity of the sema/index merging that needs to be done by
CodeComplete, at a fairly small cost in flexibility.

Reviewers: hokein

Subscribers: klimek, mgorny, ilya-biryukov, cfe-commits

Differential Revision: https://reviews.llvm.org/D42049

llvm-svn: 322480
2018-01-15 12:33:00 +00:00
Haojian Wu ba28e9ac5d [clangd] Add static index for the global code completion.
Summary:
Use the YAML-format symbols (generated by the global-symbol-builder tool) to
do the global code completion.
It is **experimental** only , but it allows us to experience global code
completion on a relatively small project.

Tested with LLVM project.

Reviewers: sammccall, ioeric

Reviewed By: sammccall, ioeric

Subscribers: klimek, ilya-biryukov, cfe-commits

Differential Revision: https://reviews.llvm.org/D41668

llvm-svn: 322191
2018-01-10 14:44:34 +00:00
Eric Liu 6f648df1b9 [clangd] Index-based code completion.
Summary: Use symbol index to populate completion results for qualfified IDs e.g. "nx::A^".

Reviewers: ilya-biryukov, sammccall

Reviewed By: ilya-biryukov, sammccall

Subscribers: rwols, klimek, mgorny, cfe-commits, sammccall

Differential Revision: https://reviews.llvm.org/D41281

llvm-svn: 321083
2017-12-19 16:50:37 +00:00
Ilya Biryukov 940901e8b1 [clangd] Implemented logging using Context
Reviewers: sammccall, ioeric, hokein

Reviewed By: sammccall

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D40486

llvm-svn: 320576
2017-12-13 12:51:22 +00:00
Sam McCall 98775c5055 [clangd] Split CodeComplete into a separate file. NFC
Summary: Shared details of ClangdUnit and CodeComplete moved to a new Compiler file.

Reviewers: ilya-biryukov

Subscribers: klimek, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D40719

llvm-svn: 319655
2017-12-04 13:49:59 +00:00