Commit Graph

6808 Commits

Author SHA1 Message Date
Nathan James 31732e6f52
[clangd] Remove ScratchFS from tests
This can lead to issues if files in the tmp directory we don't care about / control are found.
This was partially addressed in D94321, but this is a more permanent fix.
Fixes https://github.com/clangd/clangd/issues/354

Reviewed By: adamcz, sammccall

Differential Revision: https://reviews.llvm.org/D94359
2021-01-11 16:14:26 +00:00
Haojian Wu a2dbf3443a [clangd] Fix -check mode doesn't respect any tidy configs.
Differential Revision: https://reviews.llvm.org/D94411
2021-01-11 16:43:33 +01:00
Haojian Wu 1677c86124 [clangd] Add metrics for go-to-implementation.
Differential Revision: https://reviews.llvm.org/D94393
2021-01-11 10:26:50 +01:00
Nathan James 467cbd2981
[clangd][NFC] Remove unnecessary copy in CodeComplete
All tests still pass with ASAN so fairly confident no use-after-free going on here.
2021-01-09 02:32:23 +00:00
Haojian Wu 8e36d21fab [clangd] Add go-to-def metric.
to track the number of different "special" go-to-def request.

Differential Revision: https://reviews.llvm.org/D94289
2021-01-08 21:03:59 +01:00
Adam Czachorowski 2e1bb7940a [clangd] Add missing "override" to fix the build.
Follow-up to d4af86581e

Differential Revision: https://reviews.llvm.org/D94314
2021-01-08 17:24:47 +01:00
Adam Czachorowski d4af86581e [clangd] Fix type printing in the presence of qualifiers
When printing QualType with qualifiers like "const", or pointing to an
elaborated type, we would print garbage like:
  std::const std::vector<int>&
with the initial std:: being calculated correctly, but inserted in the
wrong place and the second std:: not removed (due to elaborated type).

This affected, among others, ExtractFunction and ExpandAuto tweaks.

This change introduces a new callback to PrintingPolicy, which allows us
to influence the printing of namespace qualifiers. In the future, the
same callback can be used to improve handling of "using namespace"
directives as well.

Fixes:
  https://github.com/clangd/clangd/issues/640 (ExtractFunction)
  https://github.com/clangd/clangd/issues/264 (ExpandAuto)
  First point of https://github.com/clangd/clangd/issues/524

Differential Revision: https://reviews.llvm.org/D94259
2021-01-08 17:00:39 +01:00
Haojian Wu ed3b1f9061 [clangd] go-to-implementation on a base class jumps to all subclasses.
Differential Revision: https://reviews.llvm.org/D92749
2021-01-08 13:50:57 +01:00
Haojian Wu c909512fdb [clangd] Cleanup a remaining Optional<SymbolID> usage, NFC. 2021-01-08 13:44:20 +01:00
Haojian Wu b83b7d0873 [clangd] NFC, avoid potential ODR violation. 2021-01-08 13:29:11 +01:00
Sam McCall 213329d7c6 [clangd] Add server capability advertising hot-reloading of CDBs.
Currently some clients watch for CDB changes and restart clangd, now that we
can reload compile_commands.json ourselves this is counterproductive.
The capability allows this behavior to be phased out.

This is going to be a mild regression, as we do not actually watch for files on
disk and so new diagnostics need to wait until a rebuild is requested e.g. due
to file change (and the internal caches have expired).
However this is still a better tradeoff (and if it's important, we can request
the client to watch files for us in the future).

Differential Revision: https://reviews.llvm.org/D94222
2021-01-07 13:39:21 +01:00
Nathan James 3505d8dc07 [clangd][NFC] Use PathRef for getCorrespondingHeaderOrSource 2021-01-07 02:41:19 +00:00
Nathan James 0bfe100145
[NFC] Test case refactor 2021-01-06 20:00:15 +00:00
Aleksandr Platonov 979228f120 [clangd][fuzzyFind] Do not show stale symbols in the result.
This is follow up to D93393.
Without this patch `MergedIndex::fuzzyFind()` returns stale symbols from the static index even if these symbols were removed.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93796
2021-01-06 11:17:12 +03:00
Yitzhak Mandelbaum 9eb2284f60 [clang-tidy] Update uses of deprecated Transformer APIs in StringFindStrContainsCheck.
Migrates `change` to `changeTo`; changes to new constructor API (2-arg construct
+ `setRule`); refactors use of `addInclude` to newer version.

Differential Revision: https://reviews.llvm.org/D93695
2021-01-05 16:49:29 +00:00
Stephen Kelly 53c3acb89f [clang-tidy] Add extra tests
By default, check_clang_tidy runs tests in c++11-or-later mode.

Differential Revision: https://reviews.llvm.org/D94029
2021-01-05 15:43:56 +00:00
Giulio Girardi 2f8d1e9eb2 [clangd] When querying drivers by binary, look in PATH too
Sometimes compile_commands.json databases are created without an
absolute path for the driver in the command field. By default the driver
name is appended to the current directory, however if no driver is found
in that location assume it was in the default PATH and try finding it
there

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93600
2021-01-05 12:54:07 +01:00
Thorsten Schütt 2fd11e0b1e Revert "[NFC, Refactor] Modernize StorageClass from Specifiers.h to a scoped enum (II)"
This reverts commit efc82c4ad2.
2021-01-04 23:17:45 +01:00
Thorsten Schütt efc82c4ad2 [NFC, Refactor] Modernize StorageClass from Specifiers.h to a scoped enum (II)
Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D93765
2021-01-04 22:58:26 +01:00
Nathan James 59810c51e7
[clang-tidy] Fix windows tests
Attempt to fix the 2 failing tests identifier in 48646.
Appears that python3 doesn't like nested double quotes in single quoted strings, hopefully nested single quotes in double quoted strings is a-ok.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D93979
2021-01-04 00:39:34 +00:00
Nathan James 7af6a13450
[NFC] Switch up some dyn_cast calls 2021-01-02 19:56:27 +00:00
Nico Weber b4c5e19da7 Temporarily disable to clang-tidy tests on Windows
They fail at least on my Win bot after switching it to Py3.
See PR48646 for details.
2021-01-01 23:19:48 -05:00
Yang Fan d5324c052b [clang-tidy][NFC] Fix a build warning due to an extra semicolon
Differential Revision: https://reviews.llvm.org/D93961
2021-01-01 16:00:20 +08:00
Nathan James c3b9d85bd4
[clang-tidy][NFC] Remove unnecessary headers 2020-12-28 15:01:51 +00:00
Adam Czachorowski 0999408aea [clangd] Add error handling (elog) in code completion.
Differential Revision: https://reviews.llvm.org/D93220
2020-12-28 15:22:54 +01:00
Sam McCall 74b3acefc7 [clangd] Fix case mismatch crash on in CDB on windows after 92dd077af1
See https://github.com/clangd/clangd/issues/631
2020-12-23 22:42:45 +01:00
Aleksandr Platonov 2522fa053b [clangd] Do not take stale definition from the static index.
This is follow up to D93393.
Without this patch clangd takes the symbol definition from the static index if this definition was removed from the dynamic index.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93683
2020-12-23 18:21:38 +03:00
Sam McCall f7a26127f2 [clangd] Release notes for b8c37153d5 2020-12-22 22:58:45 +01:00
Sam McCall 3dbe471a26 [clangd] Use atomics instead of locks to track periodic memory trimming
Instead of always locking/unlocking a contended mutex, we now do one atomic read
in the common case, and one read + one exchange if the timer has expried.

Also use this for memory profiling which has similar/compatible requirements.

Differential Revision: https://reviews.llvm.org/D93726
2020-12-22 22:32:22 +01:00
Stephen Kelly 7ec7788ac1 Try to fix build on Windows 2020-12-22 20:25:58 +00:00
Stephen Kelly a5311d731e [clang-tidy] Handle template instantiations in container size check
readability-container-size-empty currently modifies source code based on
AST nodes in template instantiations, which means that it makes
transformations based on substituted types.  This can lead to
transforming code to be broken.

Change the matcher implementation to ignore template instantiations
explicitly, and add a matcher to explicitly handle template declarations
instead of instantiations.

Differential Revision: https://reviews.llvm.org/D91302
2020-12-22 18:44:45 +00:00
Arthur Eubanks b2e734d5f4 Revert "[clangd] zap a few warnings"
This reverts commit 95c7b6cadb.

Depends on a reverted change.
2020-12-22 10:34:03 -08:00
Nathan James 4b3633cf2c
[clangd] Reuse buffer for JSONTransport::sendMessage
Allocate a Buffer in the JSONTransport to be used when sending messages to the client.
This gets reused each time a message is sent, reducing in fewer malloc, which is always a bonus.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93531
2020-12-22 11:30:56 +00:00
Quentin Chateau b8c37153d5 [clangd] Trim memory periodically when using glibc malloc
This diff addresses the issue of the ever increasing memory usage of clangd. The key to understand what happens is to use `malloc_stats()`: malloc arenas keep getting bigger, although the actual memory used does not. It seems some operations while bulding the indices (both dynamic and background) create this problem. Specifically, 'FileSymbols::update' and 'FileSymbols::buildIndex' seem especially affected.

This diff adds a call to `malloc_trim()` periodically in
ClangdLSPServer.

Fixes: https://github.com/clangd/clangd/issues/251
Fixes: https://github.com/clangd/clangd/issues/115

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93452
2020-12-22 08:54:28 +01:00
Quentin Chateau 3fa2d37eb3 [clangd][NFC] Improve clangd status messages
clangd actions have various naming schemes, the most
common being PascalCase. This commit applies PascalCase
to all clangd actions, and fix the status rendering
in `renderTUAction` to look more consistent.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93546
2020-12-21 20:19:25 +01:00
Chris Warner 35f2c3a8b4 [clang-tidy] cppcoreguidelines-pro-type-member-init: suppress warning for default member funcs
Modify the cppcoreguidelines-pro-type-member-init checker to ignore warnings from the move and copy-constructors when they are compiler defined with `= default` outside of the type declaration.

Reported as [LLVM bug 36819](https://bugs.llvm.org/show_bug.cgi?id=36819)

Reviewed By: malcolm.parsons

Differential Revision: https://reviews.llvm.org/D93333
2020-12-20 11:22:41 +00:00
Sam McCall 2b62e62328 [clangd] Fix windows path handling in .clang-tidy parsing 2020-12-19 02:24:25 +01:00
Sam McCall 2fced5a07b [clangd] Don't cancel requests based on "updates" with same content
There's an unfortunate collision between two features:
 - we implicitly cancel certain requests when the file changes, to avoid
   the queue getting clogged building old revisions to service stale requests
 - we "reparse-if-needed" by synthesizing a file change, e.g. on didSave

We could explicitly mark these synthetic requests to avoid this, but
looking for changes in file content clutters our APIs less and is
arguably the correct thing to do in any case.

Fixes https://github.com/clangd/clangd/issues/620
2020-12-19 02:03:40 +01:00
Sam McCall b0615642f6 [clangd] Make our printing policies for Hover more consistent, especially tags
Different cases were using a bunch of different variants of the printing policy.
Each of these had something going for it, but the result was inconsistent.

Goals:
  - single printing policy used (almost) everywhere
  - avoid unidiomatic tags like `class vector<class X>`
  - be informative and easy to understand

For tags, the solution I wound up with is: we print only the outer tag and only
in the simplest cases where this elaboration won't cause confusion.

For example:
 - class X
 - enum Foo
 - vector<int>
 - X*

This seems to strike a nice balance of providing plenty of info/context in common
cases while never being confusing.

Differential Revision: https://reviews.llvm.org/D93553
2020-12-19 00:52:55 +01:00
Sam McCall 95c7b6cadb [clangd] zap a few warnings 2020-12-18 16:34:34 +01:00
Quentin Chateau c46c7c9bcf [clangd] Smarter hover on auto and decltype
Only show the keyword as the hover "Name".

Show whether the type is deduced or undeduced as
the hover "Documentation".

Show the deduced type (if any) as the "Definition".

Don't show any hover information for:
- the "auto" word of "decltype(auto)"
- "auto" in lambda parameters
- "auto" in template arguments

---------------

This diff is a suggestion based on what @sammccall  suggested in https://reviews.llvm.org/D92977 about hover on "auto". It somehow "hacks" onto the "Documentation" and "Definition" fields of `HoverInfo`. It sure looks good on VSCode, let me know if this seem acceptable to you.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93227
2020-12-18 16:27:09 +01:00
Sam McCall 0336ff0a17 [clangd] Fix broken JSON test on windows 2020-12-18 15:11:08 +01:00
Frank Derry Wanye e69e551e0e new altera single work item barrier check
This lint check is a part of the FLOCL (FPGA Linters for OpenCL)
project out of the Synergy Lab at Virginia Tech.

FLOCL is a set of lint checks aimed at FPGA developers who write code
in OpenCL.

The altera single work item barrier check finds OpenCL kernel functions
that call a barrier function but do not call an ID function. These
kernel functions will be treated as single work-item kernels, which
could be inefficient or lead to errors.

Based on the "Altera SDK for OpenCL: Best Practices Guide."
2020-12-18 07:52:20 -05:00
Aleksandr Platonov e35f9229dc [clangd] Ignore the static index refs from the dynamic index files.
This patch fixes the following problem:
- open a file with references to the symbol `Foo`
- remove all references to `Foo` (from the dynamic index).
- `MergedIndex::refs()` result will contain positions of removed references (from the static index).

The idea of this patch is to keep a set of files which were used during index build inside the index.
Thus at processing the static index references we can check if the file of processing reference is a part of the dynamic index or not.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93393
2020-12-18 15:36:30 +03:00
Sam McCall 98993193e9 [clangd] Add hot-reload of compile_commands.json and compile_flags.txt
When querying the CDB, we stat the underlying file to check it hasn't changed.
We don't do this every time, but only if we didn't check within 5 seconds.

This behavior only exists for compile_commands.json and compile_flags.txt.
The CDB plugin system doesn't expose enough information to handle others.

Slight behavior change: we now only look for `build/compile_commands.json`
rather than trying every CDB strategy under `build` subdirectories.

Differential Revision: https://reviews.llvm.org/D92663
2020-12-18 11:16:46 +01:00
Nathan James 2808f597f8
[clangd] Print .clang-tidy configuration parsing errors using [ev]?log.
Currently warnings when parsing .clang-tidy are printed directly to errs.
This is less than ideal as there is no synchronisation printing to errs, leading to potential races.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D93436
2020-12-18 02:07:27 +00:00
Nathan James 64badecd44
[clang-tidy][NFC] Reduce copies of Intrusive..FileSystem
Swapped a few instances where a move is more optimal or the target doesn't need to hold a reference.
2020-12-17 14:09:08 +00:00
Sam McCall 894c4761c6 [clangd] Add llvm:: qualifier to work around GCC bug. NFC
Some old GCC versions seem to miss the default template parameter when
using the clang/Basic/LLVM.h forward declarations of SmallVector.

See D92788
2020-12-17 12:51:12 +01:00
Fangrui Song c70f36865e Use basic_string::find(char) instead of basic_string::find(const char *s, size_type pos=0)
Many (StringRef) cannot be detected by clang-tidy performance-faster-string-find.
2020-12-16 23:28:32 -08:00
Nathan James ddffcdf0a6
[clang-tidy] Add a diagnostic callback to parseConfiguration
Currently errors detected when parsing the YAML for .clang-tidy files are always printed to errs.
For clang-tidy binary workflows this usually isn't an issue, but using clang-tidy as a library for integrations may want to handle displaying those errors in their own specific way.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D92920
2020-12-17 00:24:58 +00:00