Commit Graph

163 Commits

Author SHA1 Message Date
Sam McCall ce94432702 [clangd] Add designator inlay hints for initializer lists.
These make the init lists appear as if designated initialization was used.

Example:
  ExpectedHint{"param: ", "arg"}
becomes
  ExpectedHint{.Label="param: ", .RangeName="arg"}

Differential Revision: https://reviews.llvm.org/D116786
2022-01-26 00:35:29 +01:00
Sam McCall 7c19fdd599 [clangd] Polish clangd/inlayHints and expose them by default.
This means it's a "real feature" in clangd 14, albeit one that requires special
client support.

- remove "preview" from the flag description
- expose the `clangdInlayHints` capability by default
- provide `position` as well as `range`
- support `InlayHintsParams.range` to restrict the range retrieved
- inlay hint list is in document order (sorted by position)

Still to come: control feature via config rather than flag.

Fixes https://github.com/clangd/clangd/issues/313
Protocol doc is in https://github.com/llvm/clangd-www/pull/56/files

Differential Revision: https://reviews.llvm.org/D116699
2022-01-07 15:12:43 +01:00
Kadir Cetinkaya d3606a3375
[clangd] Provide documentation as MarkupContent in signaturehelp
This unifies the behaviour we have in code completion item
documentations and signaturehelp. Providing better line wrapping and detection
of inline code blocks in comments to be renedered appropriately in markdown.

Differential Revision: https://reviews.llvm.org/D115442
2021-12-10 12:58:08 +01:00
Christian Kühnel 75a078455f [NFC] disabling clang-tidy check readability-identifier-naming in Protocol.h
The file follows the LSP syntax, so we're intentially deviating
from the LLVM coding standard.

Differential Revision: https://reviews.llvm.org/D113889
2021-11-16 15:25:43 +00:00
Quinn Pham c71fbdd87b [NFC] Inclusive language: Remove instances of master in URLs
[NFC] This patch fixes URLs containing "master". Old URLs were either broken or
redirecting to the new URL.

Reviewed By: #libc, ldionne, mehdi_amini

Differential Revision: https://reviews.llvm.org/D113186
2021-11-05 08:48:41 -05:00
Nathan Ridge d87d1aa076 [clangd] Deduplicate inlay hints
Duplicates can sometimes appear due to e.g. explicit template
instantiations

Differential Revision: https://reviews.llvm.org/D110051
2021-09-21 03:23:04 -04:00
Kadir Cetinkaya 57346526c8
[clangd] Make use of diagnostic tags for some clang diags
It is not great to list diag ids by hand, but I don't see any other
solution unless diagnostics are annotated with these explicitly, which is a
bigger change in clang and I am not sure if would be worth it.

Diagnostics handled by this patch is by no means exhaustive, there might be
other checks that don't mention "unused"/"deprecated" in their names. But it
feels like this should be enough to catch common diagnostics and can be extended
over time.

Differential Revision: https://reviews.llvm.org/D107040
2021-07-30 15:11:46 +02:00
Kadir Cetinkaya dc10bf1a4e
[clangd][Protocol] Drop optional from WorkspaceEdit::changes
This is causing weird code patterns in various places and I can't see
any difference between None and empty change list. Neither in the current use
cases nor in the spec.

Differential Revision: https://reviews.llvm.org/D103449
2021-06-02 22:59:18 +02:00
Nathan Ridge 0be2657c2f [clangd] Type hints for variables with 'auto' type
Differential Revision: https://reviews.llvm.org/D102148
2021-06-01 02:21:02 -04:00
Christian Kandeler f088af37e6
[clangd] Fix data type of WorkDoneProgressReport::percentage
According to the specification, this should be an unsigned integer.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D101616
2021-05-10 14:57:20 +02:00
Christian Kandeler 81dae18dff [clangd] Allow AST request without range
If no range is given, return the translation unit AST.
This is useful for tooling operations that require e.g. the full path to
a node.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D101057
2021-04-23 21:35:42 +02:00
Nathan Ridge cbc9c4ea90 [clangd] Add support for inline parameter hints
Differential Revision: https://reviews.llvm.org/D98748
2021-04-14 02:31:20 -04:00
Kadir Cetinkaya b5b2c81055
[clangd] Propagate data in diagnostics
Differential Revision: https://reviews.llvm.org/D98505
2021-04-13 17:45:09 +02:00
Sam McCall ca13f5595a [clangd] Add `limit` extension on completion and workspace-symbols
This overrides the --limit-results command-line flag, and is not constrained
by it.
See https://github.com/clangd/clangd/issues/707

Differential Revision: https://reviews.llvm.org/D97801
2021-03-16 12:28:01 +01:00
Sam McCall 3b99731c4e [clangd] Turn off implicit cancellation based on client capabilities
Capability is in upcoming 3.17: https://microsoft.github.io/language-server-protocol/specifications/specification-3-17/

(This is also useful for C++ embedders)

Differential Revision: https://reviews.llvm.org/D98414
2021-03-16 12:27:40 +01:00
Kadir Cetinkaya 1d7b328198
[clangd] Introduce client state invalidation
Clangd can invalidate client state of features like semantic higlighting
without client explicitly triggering, for example after a preamble build
caused by an onSave notification on a different file.

This patch introduces a mechanism to let client know of such actions,
and also calls the workspace/semanticTokens/refresh request to
demonstrate the situation after each preamble build.

Fixes https://github.com/clangd/clangd/issues/699.

Differential Revision: https://reviews.llvm.org/D97548
2021-03-04 11:15:10 +01:00
Sam McCall 1a4990a4f7 [clangd] Fix uninit member 2021-03-03 11:45:16 +01:00
Sam McCall 4d700fb060 [clangd] Pass raw client capabilities to modules. NFC 2021-02-15 20:57:14 +01:00
Sam McCall cea9f05432 [clangd] Move command handlers into a map in ClangdLSPServer. NFC
Differential Revision: https://reviews.llvm.org/D96507
2021-02-12 15:57:43 +01:00
Sam McCall 4dc8365f80 [clangd] Remove support for pre-standard semanticHighlighting notification
This is obsoleted by the standard semanticTokens request family.
As well as the protocol details, this allows us to remove a bunch of plumbing
around pushing highlights to clients.

This should not land until the new protocol has feature parity, see D77702.

Differential Revision: https://reviews.llvm.org/D95576
2021-02-10 22:09:03 +01:00
Sam McCall ff4832dbff [clangd] Respect ReferencesParams.context.includeDeclarations
Unfortunately this treats overrides declarations as declarations, not as
references. I don't plan to land this until I have a fix for that issue.

Differential Revision: https://reviews.llvm.org/D95450
2021-02-01 17:07:02 +01:00
Nathan James 71af5a19cb Reland"[clangd][NFC] Simplify handing on methods with no params"
This reverts commit 9d9ceb3745.

First time round caused some build bot failures due to older compilers not patched with the Defect Report about full specialization being allowed at class scope.
2021-01-25 20:19:57 +00:00
Keith Smiley 9d9ceb3745 Revert "[clangd][NFC] Simplify handing on methods with no params"
This broke the build http://lab.llvm.org:8011/#/builders/7/builds/1405

This reverts commit f05b492aae.

Differential Revision: https://reviews.llvm.org/D95385
2021-01-25 11:56:18 -08:00
Nathan James f05b492aae [clangd][NFC] Simplify handing on methods with no params
Add bind methods handling the case when a method has an empty params interface and when it has no parameters.

Remove ShutdownParams and ExitParams from Protocol, In LSP they aren't defined, instead the methods are defined to have void as the params. This signature now better reflects that.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D95270
2021-01-25 19:08:10 +00:00
Sam McCall 8adc4d1ec7 [clangd] Add textDocument/ast extension method to dump the AST
This is a mass-market version of the "dump AST" tweak we have behind
-hidden-features.
I think in this friendlier form it'll be useful for people outside clang
developers, which would justify making it a real feature.
It could be useful as a step towards lightweight clang-AST tooling in clangd
itself (like matcher-based search).

Advantages over the tweak:
 - simplified information makes it more accessible, likely somewhat useful
   without learning too much clang internals
 - can be shown in a tree view
 - structured information gives some options for presentation (e.g.
   icon + two text colors + tooltip in vscode)
 - clickable nodes jump to the corresponding code
Disadvantages:
 - a bunch of code to handle different node types
 - likely missing some important info vs dump-ast due to brevity/oversight
 - may end up chasing/maintaining support for the long tail of nodes

Demo with VSCode support: https://imgur.com/a/6gKfyIV

Differential Revision: https://reviews.llvm.org/D89571
2020-11-20 01:13:28 +01:00
Nathan Ridge 9d77584fe0 [clangd] Call hierarchy (Protocol layer)
The protocol is based on the spec found here:
https://microsoft.github.io/language-server-protocol/specifications/specification-3-16/#textDocument_prepareCallHierarchy

Differential Revision: https://reviews.llvm.org/D89296
2020-11-18 03:41:31 -05:00
Kadir Cetinkaya 0df197516b
[clangd] Value initialize SymbolIDs
We were default initializing SymbolIDs before, which would leave
indeterminate values in underlying std::array.

This patch updates the underlying data initalization to be value-init and adds a
way to check for validness of a SymbolID.

Differential Revision: https://reviews.llvm.org/D90397
2020-11-02 11:37:47 +01:00
Sam McCall 5627ae6c50 [clangd] Support CodeActionParams.only
Differential Revision: https://reviews.llvm.org/D89126
2020-10-29 09:44:08 +01:00
Kadir Cetinkaya d0f287464d
[clangd] Add $/memoryUsage LSP extension
Performs a detailed profiling of clangd lsp server and conveys the
result to the client as a json object. It is of the form:
   {
     "_self": 0,
     "_total": 8,
     "child1": {
       "_self": 4,
       "_total": 4,
     }
     "child2": {
       "_self": 2,
       "_total": 4,
       "child_deep": {
         "_self": 2,
         "_total": 2,
       }
     }
   }

Differential Revision: https://reviews.llvm.org/D89277
2020-10-19 12:30:25 +02:00
Sam McCall 3cb1220709 [clangd] Add `score` extension to workspace/symbol response.
The protocol doesn't really incorporate ranking.
As with code completion, most clients respect what the server sends, but
VSCode re-ranks items, with predictable results.
See https://github.com/clangd/vscode-clangd/issues/81

There's no filterText field so we may be unable to construct a good workaround.
But expose the score so we may be able to do this on the client in future.

Differential Revision: https://reviews.llvm.org/D88844
2020-10-06 11:57:38 +02:00
Sam McCall 8392685c2b [clangd] Mark code action as "preferred" if it's the sole quickfix action
Differential Revision: https://reviews.llvm.org/D88489
2020-09-30 10:11:30 +02:00
Sam McCall fa69b60806 [JSON] Add error reporting to fromJSON and ObjectMapper
Translating between JSON objects and C++ strutctures is common.
From experience in clangd, fromJSON/ObjectMapper work well and save a lot of
code, but aren't adopted elsewhere at least partly due to total lack of error
reporting beyond "ok"/"bad".

The recently-added error model should be rich enough for most applications.
It requires tracking the path within the root object and reporting local
errors at appropriate places.
To do this, we exploit the fact that the call graph of recursive
parse functions mirror the structure of the JSON itself.
The current path is represented as a linked list of segments, each of which is
on the stack as a parameter. Concretely, fromJSON now looks like:
  bool fromJSON(const Value&, T&, Path);

Beyond the signature change, this is reasonably unobtrusive: building
the path segments is mostly handled by ObjectMapper and the vector<T> fromJSON.
However the root caller of fromJSON must now create a Root object to
store the errors, which is a little clunky.

I've added high-level parse<T>(StringRef) -> Expected<T>, but it's not
general enough to be the primary interface I think (at least, not usable in
clangd).

All existing users (mostly just clangd) are updated in this patch,
making this change backwards-compatible is a bit hairy.

Differential Revision: https://reviews.llvm.org/D88103
2020-09-24 01:20:09 +02:00
Kirill Bobyrev 7a514c9bf8
[clangd] Implement textDocument/foldingRange
Summary:
This patch introduces basic textDocument/foldingRange support. It relies on
textDocument/documentSymbols to collect all symbols and uses takes ranges
to create folds.

The next steps for textDocument/foldingRange support would be:

* Implementing FoldingRangeClientCapabilities and respecting respect client
  preferences
* Specifying folding range kind
* Migrating from DocumentSymbol implementation to custom RecursiveASTVisitor flow that will allow more flexibility
* Supporting more folding range types: comments, PP conditional regions, includes and other code regions (e.g. public/private/protected sections of classes, control flow statement bodies)

Tested: (Neo)Vim (coc-clangd) and VSCode.

Related issue: https://github.com/clangd/clangd/issues/310

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: nridge, ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82436
2020-07-14 09:28:42 +02:00
Sam McCall 5fea54bc05 [clangd] Update semanticTokens support to reflect latest LSP draft
Summary: Mostly a few methods and message names have been renamed.

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83556
2020-07-10 16:52:57 +02:00
Sam McCall a3a27a7aee [clangd] Render code complete documentation as plaintext/markdown.
Summary:
Structure is parsed from the raw comment using the existing heuristics used
for hover.

Reviewers: kadircet

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79157
2020-04-30 19:00:49 +02:00
Sam McCall 596b63ad40 [clangd] Rebuild dependent files when a header is saved.
Summary:
Caveats:
 - only works when the header is changed in the editor and the editor provides
   the notification
 - we revalidate preambles for all open files (stat all their headers) rather
   than taking advantage of the fact that we know which file changed.
   This is much simpler!

Fixes https://github.com/clangd/clangd/issues/107

Reviewers: kadircet

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77847
2020-04-13 22:08:15 +02:00
Sam McCall 31db1e0bd1 [clangd] Send the correct error code when cancelling requests.
Summary:
I couldn't quite bring myself to make Cancellation depend on LSP ErrorCode.
Magic numbers instead...

Reviewers: kadircet

Subscribers: ilya-biryukov, javed.absar, MaskRay, jkorous, arphaman, jfb, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77947
2020-04-13 19:42:38 +02:00
Sam McCall 9e3063eace [clangd] Support textDocument/semanticTokens/edits
Summary:
This returns incremental highlights as a set of edits against the
previous highlights.

Server-side, we compute the full set of highlights, this just saves
wire-format size.

For now, the diff used is trivial: everything from the first change to
the last change is sent as a single edit.

The wire format is grungy - the replacement offset/length refer to
positions in the encoded array instead of the logical list of tokens.
We use token-oriented structs and translating to LSP forms when serializing.
This departs from LSP (but is consistent with semanticTokens today).

Tested in VSCode insiders (with a patched client to enable experimental
features).

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, mgrang, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77225
2020-04-02 17:38:29 +02:00
Sam McCall fc830106e1 [clangd] Don't send semanticHighlights to clients that support semanticTokens.
Summary: This allows the standard mechanism to gracefully displace the old one.

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77206
2020-04-02 17:38:02 +02:00
Sam McCall 71177ac168 [clangd] Support new semanticTokens request from LSP 3.16.
Summary:
This is a simpler request/response protocol.

Reference: https://github.com/microsoft/vscode-languageserver-node/blob/master/protocol/src/protocol.semanticTokens.proposed.ts

No attempt to support incremental formatting (yet).

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76663
2020-03-31 15:14:35 +02:00
Sam McCall edf6a19adf [clangd] Rename theia-derived semantic highlighting protocol. NFC
This feature is being added to LSP with a different (request-response)
protocol in 3.16, so this should avoid some confusion.
2020-03-24 00:39:47 +01:00
Sam McCall 2cd33e6fe6 [clangd] Track document versions, include them with diags, enhance logs
Summary:
This ties to an LSP feature (diagnostic versioning) but really a lot
of the value is in being able to log what's happening with file versions
and queues more descriptively and clearly.

As such it's fairly invasive, for a logging patch :-\

Key decisions:
 - at the LSP layer, we don't reqire the client to provide versions (LSP
   makes it mandatory but we never enforced it). If not provided,
   versions start at 0 and increment. DraftStore handles this.
 - don't propagate magically using contexts, but rather manually:
   addDocument -> ParseInputs -> (ParsedAST, Preamble, various callbacks)
   Context-propagation would hide the versions from ClangdServer, which
   would make producing good log messages hard
 - within ClangdServer, treat versions as opaque and unordered.
   std::string is a convenient type for this, and allows richer versions
   for embedders. They're "mandatory" but "null" is a reasonable default.

Subscribers: ilya-biryukov, javed.absar, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75582
2020-03-05 01:22:32 +01:00
Sam McCall caf5a4d57f [clangd] Propagate versions into DraftStore, assigning where missing. NFC
This prepares for propagating versions through the server so diagnostics
etc can be versioned.
2020-03-03 16:20:13 +01:00
Sam McCall 6525a6b7b2 [clangd] Use structured PublishDiagnosticsParams. NFC 2020-03-03 12:44:40 +01:00
Sam McCall 8a2d294ed0 [clangd] Handle `initialized` notification (no-op to suppress log message) 2020-03-03 12:12:30 +01:00
Kirill Bobyrev 2a095ff6f5
[clangd] Add add commit characters to the server capabilities
Summary:
Make it more convinient for the clients to select completion items by
providing a set of default characters (punctuation).

Related issue: https://github.com/clangd/clangd/issues/284

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74606
2020-02-19 08:32:00 +01:00
Kirill Bobyrev ff7b5bac04
[clangd] Expose Code Completion score to the client
Summary:
Make it possible for the client to adjust the ranking by using the score Clangd
calculates for the completion items.

Reviewers: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74547
2020-02-13 15:05:18 +01:00
David Goldman 6ff0228c6d [clang] Add `forceReload` clangd extension to 'textDocument/didChange'
Summary:
- This option forces a preamble rebuild to handle the odd case
  of a missing header file being added

Reviewers: sammccall

Subscribers: ilya-biryukov, javed.absar, MaskRay, jkorous, arphaman, jfb, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73916
2020-02-10 14:02:02 -05:00
Sam McCall 7d20e80225 [clangd] Show background index status using LSP 3.15 work-done progress notifications
Summary:
It simply shows the completed/total items on the background queue, e.g.
 indexing: 233/1000
The denominator is reset to zero every time the queue goes idle.

The protocol is fairly complicated here (requires creating a remote "progress"
resource before sending updates). We implement the full protocol, but I've added
an extension allowing it to be skipped to reduce the burden on clients - in
particular the lit test takes this shortcut.

The addition of background index progress to DiagnosticConsumer seems ridiculous
at first glance, but I believe that interface is trending in the direction of
"ClangdServer callbacks" anyway. It's due for a rename, but otherwise actually
fits.

Reviewers: kadircet, usaxena95

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

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D73218
2020-01-24 12:21:08 +01:00
Kazuaki Ishizaki b7ecf1c1c3 NFC: Fix trivial typos in comments 2020-01-04 10:28:41 -05:00