Commit Graph

521 Commits

Author SHA1 Message Date
Sam McCall a68951e37e [clangd] More precise representation of symbol names/labels in the index.
Summary:
Previously, the strings matched LSP completion pretty closely.
The completion label was a single string, for instance. This made
implementing completion itself easy but makes it hard to use the names
in other way, e.g. pretty-printed name in synthesized
documentation/hover.

It also limits our introspection into completion items, which can only
be as precise as the indexed symbols. This change is a prerequisite to
improvements to overload bundling which need to inspect e.g. signature
structure.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D48475

llvm-svn: 335360
2018-06-22 16:11:35 +00:00
Eric Liu 7ad1696900 [clangd] Expose qualified symbol names in CompletionItem (C++ structure only, no json).
Summary:
The qualified name can be used to match a completion item to its corresponding
symbol. This can be useful for tools that measure code completion quality.
Qualified names are not precise for identifying symbols; we need to figure out a
better way to identify completion items.

Reviewers: sammccall

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D48425

llvm-svn: 335334
2018-06-22 10:46:59 +00:00
Sam McCall 032db94ac9 [clangd] Remove FilterText from the index.
Summary:
It's almost always identical to Name, and in fact we never used it (we used name
instead).
The only case where they differ is objc method selectors (foo: vs foo:bar:).
We can live with the latter for both name and filterText, so I've made that
change too.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D48375

llvm-svn: 335321
2018-06-22 06:41:43 +00:00
Eric Liu 8763e48727 [clangd] Expose 'shouldCollectSymbol' helper from SymbolCollector.
Summary: This allows tools to examine symbols that would be collected in a symbol index. For example, a tool that measures index-based completion quality would be interested in references to symbols that are collected in the index.

Reviewers: sammccall

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D48418

llvm-svn: 335218
2018-06-21 12:12:26 +00:00
Eric Liu ffaaf7d642 [clangd] Fix proximity signal output format. NFC
llvm-svn: 335212
2018-06-21 09:51:28 +00:00
Eric Liu 53425f297b [clangd] Use workspace root path as hint path for resolving URIs in workspace/symbol
Summary:
Some URI schemes require a hint path to be provided, and workspace root
path seems to be a good fit.

Reviewers: sammccall, malaperle

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D48290

llvm-svn: 335035
2018-06-19 09:33:53 +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 599a3831ad [clangd] context key constructor is constexpr. NFC
llvm-svn: 334824
2018-06-15 12:39:21 +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
Haojian Wu 7943d4fb19 [clangd] Fix buildbot error.
llvm-svn: 334812
2018-06-15 09:32:36 +00:00
Eric Liu 09c3c37b72 [clangd] Boost completion score according to file proximity.
Summary:
Also move unittest: URI scheme to TestFS so that it can be shared by
different tests.

Reviewers: sammccall

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D47935

llvm-svn: 334810
2018-06-15 08:58:12 +00:00
Eric Liu 13e503f68a [clangd] Customizable URI schemes for dynamic index.
Summary:
This allows dynamic index to have consistent URI schemes with the
static index which can have customized URI schemes, which would make file
proximity scoring based on URIs easier.

Reviewers: sammccall

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D47931

llvm-svn: 334809
2018-06-15 08:55:00 +00:00
Ilya Biryukov 89fcf6b2b6 [clangd] Do not report comments that only have special chars.
Summary:
Like the following:
  // -------
  // =======
  // *******

It does not cover all the cases, but those are definitely not very
useful.

Reviewers: sammccall, ioeric, hokein

Reviewed By: sammccall

Subscribers: MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48171

llvm-svn: 334807
2018-06-15 08:31:17 +00:00
Sam McCall 8b2dcc1f6f [clangd] FuzzyMatch: forbid tail-tail matches after a miss: [pat] !~ "panther"
Summary:
This is a small code change but vastly reduces noise in code completion results.
The intent of allowing this was to let [sc] ~ "strncpy" and [strcpy] ~ "strncpy"
however the benefits for unsegmented names aren't IMO worth the costs.

Test cases should be representative of the changes here.

Reviewers: ilya-biryukov

Subscribers: ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D47950

llvm-svn: 334712
2018-06-14 13:50:30 +00:00
Sam McCall c3b5bad723 [clangd] Boost keyword completions.
Summary: These have few signals other than being keywords, so the boost is high.

Reviewers: ilya-biryukov

Subscribers: ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48083

llvm-svn: 334711
2018-06-14 13:42:21 +00:00
Sam McCall 0f8df3e35a Revert "[clangd] Log completion context type. NFC"
This reverts commit r334572, which has a potential use-after-free.

llvm-svn: 334589
2018-06-13 11:31:20 +00:00
Ilya Biryukov b10ef47a68 [clangd] Move caching of compile args out of ClangdServer.
Summary:
Caching is now handled by ClangdLSPServer and hidden behind the
GlobalCompilationDatabase interface. This simplifies ClangdServer.
This change also removes the SkipCache flag from addDocument,
which is now obsolete.

No behavioral changes are intended, the clangd binary still caches the
compile commands on the first read.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: mgorny, ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48068

llvm-svn: 334585
2018-06-13 09:20:41 +00:00
Sam McCall 2b45492247 [clangd] Log completion context type. NFC
llvm-svn: 334572
2018-06-13 06:25:36 +00:00
Ilya Biryukov 9d8f61ad60 [clangd] Trace time the operations wait on Semaphore.
The Semaphore is currently used to limit the number of concurrently
running tasks. Tracing the wait times will allow to find out how much
time is wasted waiting on other operations to complete.

llvm-svn: 334495
2018-06-12 11:56:21 +00:00
Eric Liu 6de95ece44 [clangd] Support proximity paths in index fuzzy find.
Reviewers: sammccall

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

Differential Revision: https://reviews.llvm.org/D47937

llvm-svn: 334485
2018-06-12 08:48:20 +00:00
Sam McCall 8330589d59 [clangd] Deduplicate CompletionItemKind conversion.
llvm-svn: 334323
2018-06-08 21:17:19 +00:00
Sam McCall 9e5eafbaa8 [clangd] Fix fuzzer after r333993
llvm-svn: 334315
2018-06-08 20:25:05 +00:00
Sam McCall 80ad707288 [clangd] Require case-insensitive prefix match for macro completions.
Summary: Macros are terribly spammy at the moment and this offers some relief.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47936

llvm-svn: 334287
2018-06-08 13:32:25 +00:00
Sam McCall e018b36cea [clangd] Downrank symbols with reserved names (score *= 0.1)
Reviewers: ilya-biryukov

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

Differential Revision: https://reviews.llvm.org/D47707

llvm-svn: 334274
2018-06-08 09:36:34 +00:00
Zachary Turner 1f67a3cba9 [FileSystem] Split up the OpenFlags enumeration.
This breaks the OpenFlags enumeration into two separate
enumerations: OpenFlags and CreationDisposition.  The first
controls the behavior of the API depending on whether or not
the target file already exists, and is not a flags-based
enum.  The second controls more flags-like values.

This yields a more easy to understand API, while also allowing
flags to be passed to the openForRead api, where most of the
values didn't make sense before.  This also makes the apis more
testable as it becomes easy to enumerate all the configurations
which make sense, so I've added many new tests to exercise all
the different values.

llvm-svn: 334221
2018-06-07 19:58:58 +00:00
Sam McCall 4caa85129f [clangd] Code completion: drop explicit injected names/operators, ignore Sema priority
Summary:
Now we have most of Sema's code completion signals incorporated in Quality,
which will allow us to give consistent ranking to sema/index results.

Therefore we can/should stop using Sema priority as an explicit signal.
This fixes some issues like namespaces always having a terrible score.

The most important missing signals are:
 - Really dumb/rarely useful completions like:
    SomeStruct().^SomeStruct
    SomeStruct().^operator=
    SomeStruct().~SomeStruct()
   We already filter out destructors, this patch adds injected names and
   operators to that list.
 - type matching the expression context.
   Ilya has a plan to add this in a way that's compatible with indexes
   (design doc should be shared real soon now!)

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47871

llvm-svn: 334192
2018-06-07 12:49:17 +00:00
Haojian Wu 6138b78672 [clangd] Fix using the incorrect Index for go-to-definition.
Reviewers: sammccall

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

Differential Revision: https://reviews.llvm.org/D47869

llvm-svn: 334176
2018-06-07 08:49:55 +00:00
Sam McCall c22c9aa414 [clangd] fix unintended fallthrough in scope-based scoring
llvm-svn: 334170
2018-06-07 08:16:36 +00:00
Sam McCall 203cdee0ec [clangd] Make workspace/symbols actually rank its results.
Summary: The index doesn't actually return results in ranked order.

Reviewers: hokein

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

Differential Revision: https://reviews.llvm.org/D47821

llvm-svn: 334162
2018-06-07 06:55:59 +00:00
Tim Northover 0698e967a1 Add semicolon to recent MSVC fix.
llvm-svn: 334093
2018-06-06 13:28:49 +00:00
Simon Pilgrim 0c9e1c8d61 Fix MSVC 'implicit double to float truncation and 'not all control paths return a value' warnings. NFCI.
llvm-svn: 334091
2018-06-06 12:48:27 +00:00
Sam McCall bc7cbb7895 [clangd] Boost fuzzy match score by 2x (so a maximum of 2) when the query is the full identifier name.
Summary: Fix a couple of bugs in tests an in Quality to keep tests passing.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47815

llvm-svn: 334089
2018-06-06 12:38:37 +00:00
Sam McCall 4a3c69ba6e Adjust symbol score based on crude symbol type.
Summary: Numbers are guesses to be adjusted later.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47787

llvm-svn: 334074
2018-06-06 08:53:36 +00:00
Sam McCall 89f529356a [clangd] Fix inverted test again, sigh
llvm-svn: 334033
2018-06-05 18:00:48 +00:00
Sam McCall 661d89c324 [clangd] Quality fixes (uninit var, missing debug output, pattern decl CCRs).
llvm-svn: 334032
2018-06-05 17:58:12 +00:00
Sam McCall d9b54f0025 [clangd] Boost code completion results that are narrowly scoped (local, members)
Summary:
This signal is considered a relevance rather than a quality signal because it's
dependent on the query (the fact that it's completion, and implicitly the query
context).

This is part of the effort to reduce reliance on Sema priority, so we can have
consistent ranking between Index and Sema results.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47762

llvm-svn: 334026
2018-06-05 16:30:25 +00:00
Marc-Andre Laperle d41bc70094 [clangd] Remove unused variables
Summary: Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>

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

Differential Revision: https://reviews.llvm.org/D47737

llvm-svn: 334018
2018-06-05 14:07:45 +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
Sam McCall db41e1c6da [clangd] Test tweaks (consistency, shorter, doc). NFC
llvm-svn: 334014
2018-06-05 12:22:43 +00:00
Sam McCall 27a07cf84f [clangd] Rewrite JSON dispatcher loop using C IO (FILE*) instead of std::istream.
Summary:
The EINTR loop around getline was added to fix an issue with mac gdb, but seems
to loop infinitely in rare cases on linux where the parent editor exits (most
reports with VSCode).
I can't work out how to fix this in a portable way with std::istream, but the
C APIs have clearer contracts and LLVM has a RetryAfterSignal function for use
with them which seems battle-tested.

While here, clean up some inconsistency around \n in log messages (now
add it only after JSON payloads), and reduce the scope of the
long-message handling which was only really added to fight fuzzers.

Reviewers: malaperle, ilya-biryukov

Subscribers: klimek, ioeric, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D47643

llvm-svn: 333993
2018-06-05 09:34:46 +00:00
Ilya Biryukov f029646fa3 [clangd] Boost scores for decls from current file in completion
Summary: This should, arguably, give better ranking.

Reviewers: ioeric, sammccall

Reviewed By: sammccall

Subscribers: mgorny, klimek, MaskRay, jkorous, mgrang, cfe-commits

Differential Revision: https://reviews.llvm.org/D46943

llvm-svn: 333906
2018-06-04 14:50:59 +00:00
Eric Liu 77d1811e96 [clangd] Avoid indexing decls associated with friend decls.
Summary:
These decls are sometime used as the canonical declarations (e.g. for go-to-def),
which seems to be bad.

- friend decls that are not definitions should be ignored for indexing purposes
- this means they should never be selected as canonical decl
- if the friend decl is the only decl, then the symbol should not be indexed

Reviewers: sammccall

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D47623

llvm-svn: 333885
2018-06-04 11:31:55 +00:00
Haojian Wu cc8da4ebed [clangd] Remove the dead offset fields in Symbol.
Reviewers: sammccall

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

Differential Revision: https://reviews.llvm.org/D47699

llvm-svn: 333882
2018-06-04 10:43:59 +00:00
Sam McCall 682cfe704d [clangd] Hover should return null when not hovering over anything.
Summary: Also made JSON serialize Optional<T> to simplify this.

Reviewers: ioeric

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

Differential Revision: https://reviews.llvm.org/D47701

llvm-svn: 333881
2018-06-04 10:37:16 +00:00
Eric Liu 528eb6599f Reland "[clangd] Adapt file migration in r332720"
This reverts commit r333535.

llvm-svn: 333877
2018-06-04 09:04:28 +00:00
Eric Liu a1dee23b89 Revert "Reland "[clangd] Adapt file migration in r332720""
This reverts commit r333533.

llvm-svn: 333876
2018-06-04 09:04:25 +00:00
Eric Liu 719674bdf1 Reland "[clangd] Adapt file migration in r332720"
This reverts commit r332752 (i.e. reland r332721).

llvm-svn: 333875
2018-06-04 09:04:19 +00:00
Ilya Biryukov 0da27c7c8a [clangd] Compute better estimates for memory usage of the AST
Also fix the return value of IdleASTs::getUsedBytes().
It was 'bool' instead of 'size_t' *facepalm*.

llvm-svn: 333758
2018-06-01 14:44:57 +00:00
Ilya Biryukov cd16e559d2 [clangd] Attempt the fix the buildbots after r333737
llvm-svn: 333742
2018-06-01 12:03:16 +00:00
Ilya Biryukov 823b056f58 [clangd] Keep only a limited number of idle ASTs in memory
Summary:
After this commit, clangd will only keep the last 3 accessed ASTs in
memory. Preambles for each of the opened files are still kept in
memory to make completion and AST rebuilds fast.

AST rebuilds are usually fast enough, but having the last ASTs in
memory still considerably improves latency of operations like
findDefinition and documeneHighlight, which are often sent multiple
times a second when moving around the code. So keeping some of the last
accessed ASTs in memory seems like a reasonable tradeoff.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: malaperle, arphaman, klimek, javed.absar, ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D47063

llvm-svn: 333737
2018-06-01 10:08:43 +00:00