Commit Graph

949 Commits

Author SHA1 Message Date
Sam McCall 0336ff0a17 [clangd] Fix broken JSON test on windows 2020-12-18 15:11:08 +01:00
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 dfac97d557
[clangd] Validate clang-tidy Checks in clangd config.
Add instrumentation in ConfigCompile to validate that items in ClangTidy:[Add|Remove] correspond to actual clang-tidy checks.
If they don't a warning will be presented to the user.

This is especially useful for catching typos in the glob items.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92874
2020-12-15 21:10:57 +00:00
Nathan James cfa1010c42
[clangd] Provide suggestions with invalid config keys
Update the config file warning when an unknown key is detected which is likely a typo by suggesting the likely key.
This won't suggest a key that has already been seen in the block.

Appends the fix to the diag, however right now there is no support for presenting that fix to the user.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92990
2020-12-15 18:16:17 +00:00
Quentin Chateau bda7d0af97 [clangd] Improve goToDefinition on auto and dectype
locateSymbolAt (used in goToDeclaration) follows the
deduced type instead of failing to locate the declaration.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92977
2020-12-15 16:32:22 +01:00
xndcn 9c328e7afa [clangd] Add hover info for `this` expr
How about add hover information for `this` expr?
It seems useful to show related information about the class for `this` expr sometimes.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92041
2020-12-15 09:47:29 +01:00
Haojian Wu 63ec9e40d1 [clangd] Go-to-definition on pure virtual method decls jumps to all overrides.
Reviewed By: usaxena95

Differential Revision: https://reviews.llvm.org/D92299
2020-12-14 08:56:24 +01:00
Nathan Ridge fef242c32e [clangd] Fix locateMacroAt() for macro definition outside preamble
Fixes https://github.com/clangd/clangd/issues/577

Differential Revision: https://reviews.llvm.org/D91025
2020-12-13 18:33:33 -05:00
Nathan James a0cf2b8f71
[clangd][NFC] Remove unnecessary vector.
As pointed out in D92788.

Reviewed By: kbobyrev

Differential Revision: https://reviews.llvm.org/D92986
2020-12-10 14:59:17 +00:00
Kirill Bobyrev ee02e20c08
[clangd] NFC: Use SmallVector<T> where possible
SmallVector<T> with default size is now the recommended version (D92522).

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92788
2020-12-10 13:36:49 +01:00
Duncan P. N. Exon Smith 028e55d2d4 clangd: Migrate to FileEntryRef in TweakTests, NFC 2020-12-09 17:00:42 -08:00
Adam Czachorowski 5934a79196 [clangd] Split tweak tests into one file per tweak.
No changes to the tests themselves, other than some auto -> const auto
diagnostic fixes and formatting.

Differential Revision: https://reviews.llvm.org/D92939
2020-12-09 17:17:06 +01:00
Adam Czachorowski 3c5bed734f [clangd] ExpandAutoType: Do not offer code action on lambdas.
We can't expand lambda types anyway. Now we simply not offer the code
action instead of showing it and then returning an error in apply().

Differential Revision: https://reviews.llvm.org/D92847
2020-12-08 20:03:16 +01:00
Adam Czachorowski f6b205dae1 [clangd] ExtractFunction: disable on regions that sometimes, but not always return.
apply() will fail in those cases, so it's better to detect it in
prepare() already and hide code action from the user.

This was especially annoying on code bases that use a lot of
RETURN_IF_ERROR-like macros.

Differential Revision: https://reviews.llvm.org/D92408
2020-12-08 15:55:32 +01:00
Sam McCall 2542ef83ed [clangd] Fix windows slashes in project config diagnostics 2020-12-07 12:54:38 +01:00
Sam McCall f1357264b8 [clangd] Temporarily test that uncovered broken behavior on windows 2020-12-07 12:34:17 +01:00
Sam McCall fed9af29c2 [clangd] Publish config file errors over LSP
We don't act as a language server for these files (e.g. don't get open/close
notifications for them), but just blindly publish diagnostics for them.

This works reasonably well in coc.nvim and vscode: they show up in the
workspace diagnostic list and when you open the file.
The only update after the file is reparsed, not as you type which is a bit
janky, but seems a lot better than nothing.

Fixes https://github.com/clangd/clangd/issues/614

Differential Revision: https://reviews.llvm.org/D92704
2020-12-07 11:07:32 +01:00
Haojian Wu 1df0677e6a [clangd] Add language metrics for recovery AST usage.
Differential Revision: https://reviews.llvm.org/D92157
2020-12-07 10:52:05 +01:00
Haojian Wu 445289aa63 [clangd] Fix an assertion violation in rename.
NamedDecl::getName() asserts the name must be an identifier.

Differential Revision: https://reviews.llvm.org/D92642
2020-12-04 12:23:26 +01:00
Adam Czachorowski c282b7de5a [clangd] AddUsing: Fix a crash on ElaboratedTypes without NestedNameSpecfiiers.
Differential Revision: https://reviews.llvm.org/D92579
2020-12-03 20:25:38 +01:00
Adam Czachorowski 517828a31b [clangd] Bundle code completion items when the include paths differ, but resolve to the same file.
This can happen when, for example, merging results from an external
index that generates IncludeHeaders with full URI rather than just
literal include.

Differential Revision: https://reviews.llvm.org/D92494
2020-12-03 16:33:15 +01:00
Haojian Wu a59e504a61 [clangd] Fix a nullptr-access crash in canonicalRenameDecl. 2020-12-03 12:59:00 +01:00
Nathan Ridge f15b7869e5 [clang-tidy] [clangd] Avoid multi-line diagnostic range for else-after-return diagnostic
Fixes https://bugs.llvm.org/show_bug.cgi?id=47809

Differential Revision: https://reviews.llvm.org/D92272
2020-11-29 18:32:23 -05:00
Kirill Bobyrev 4169c520f6
[clangd] Add symbol origin for remote index
Makes it easier to diagnose remote index issues with --debug-origins flag.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D92202
2020-11-28 15:38:11 +01:00
Kirill Bobyrev abfcb606c2
[clangd] Add support for within-file rename of complicated fields
This was originally a part of D71880 but is separated for simplicity and ease
of reviewing.

Fixes: https://github.com/clangd/clangd/issues/582

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D91952
2020-11-27 03:59:28 +01:00
Adam Czachorowski 9d87739f66 [clangd] AddUsing: do not crash on non-namespace using decls.
Differential Revision: https://reviews.llvm.org/D92186
2020-11-26 20:07:56 +01:00
Nathan Ridge d1fd91ddaf [clangd] Do not treat line as inactive if skipped range ends at character position 0
Fixes https://github.com/clangd/clangd/issues/602

Differential Revision: https://reviews.llvm.org/D92148
2020-11-26 03:42:42 -05:00
Nathan Ridge c6cb47b640 [clangd] Collect main file refs by default
This is needed for call hierarchy to be able to find callers of
main-file-only functions.

Differential Revision: https://reviews.llvm.org/D92000
2020-11-25 20:33:57 -05:00
Nathan James 73fdd99870
[clangd] Implement clang-tidy options from config
Added some new ClangTidyOptionsProvider like classes designed for clangd work flow.
These providers are designed to source the options on the worker thread but in a thread safe manner.
This is done through making the options getter take a pointer to the filesystem used by the worker thread which natuarally is from a ThreadsafeFS.
Internal caching in the providers is also guarded.

The providers don't inherit from `ClangTidyOptionsProvider` instead they share a base class which is able to create a provider for the `ClangTidyContext` using a specific FileSystem.
This approach means one provider can be used for multiple contexts even though `ClangTidyContext` owns its provider.

Depends on D90531

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D91029
2020-11-25 18:35:35 +00:00
Adam Czachorowski f6970503d2 [clangd] PopulateSwitch: disable on dependent enums.
If the enum is a dependent type, we would crash somewhere in
getIntWidth(). -Wswitch diagnostic doesn't work on dependent enums
either.

Differential Revision: https://reviews.llvm.org/D92051
2020-11-25 14:12:29 +01:00
Sam McCall d95db1693c [clangd] Extract common file-caching logic from ConfigProvider.
The plan is to use this to use this for .clang-format, .clang-tidy, and
compile_commands.json. (Currently the former two are reparsed every
time, and the latter is cached forever and changes are never seen).

Differential Revision: https://reviews.llvm.org/D88172
2020-11-25 12:09:13 +01:00
Haojian Wu 0cb38699a0 [clangd] Fix a tsan failure.
Tracer must be set up before calling any clangd-specific functions.
2020-11-25 11:47:44 +01:00
Haojian Wu fb6f425d1b [clangd] Add metrics for invalid name.
Differential Revision: https://reviews.llvm.org/D92082
2020-11-25 10:50:43 +01:00
Nathan Ridge 3d2c681f28 [clangd] Avoid type hierarchy crash on incomplete type
Fixes https://github.com/clangd/clangd/issues/597

Differential Revision: https://reviews.llvm.org/D92077
2020-11-25 03:45:00 -05:00
Adam Czachorowski a200501bca [clangd] Addusing tweak: find insertion point after definition
When type/function is defined in the middle of the file, previuosly we
would sometimes insert a "using" line before that definition, leading to
a compilation error. With this fix, we pick a point after such
definition in translation unit.

This is not a perfect solution. For example, it still doesn't handle
"using namespace" directives. It is, however, a significant improvement.

Differential Revision: https://reviews.llvm.org/D92053
2020-11-24 22:57:02 +01:00
Adam Czachorowski f6e59294b6 [clangd] AddUsing: Used spelled text instead of type name.
This improves the behavior related to type aliases, as well as cases of
typo correction.

Differential Revision: https://reviews.llvm.org/D91966
2020-11-24 18:59:09 +01:00
Sam McCall 9e83d0bcdf [clangd] Mention when CXXThis is implicit in exposed AST.
Seeing an implicit this in the AST is pretty confusing I think.
While here, also mention when `this` is const.

Differential Revision: https://reviews.llvm.org/D91868
2020-11-24 16:57:56 +01:00
Kadir Cetinkaya f726101b62
[clangd] Fix shared-lib builds
Differential Revision: https://reviews.llvm.org/D91859
2020-11-24 13:05:20 +01:00
Nathan Ridge 5b6f47595b [clangd] Sort results of incomingCalls request by container name
Differential Revision: https://reviews.llvm.org/D92009
2020-11-24 03:29:02 -05:00
Nathan Ridge 0a4f99c494 [clangd] Call hierarchy (ClangdLSPServer layer)
Differential Revision: https://reviews.llvm.org/D91124
2020-11-23 20:44:07 -05:00
Nathan Ridge 3e6e6a2db6 [clangd] Call hierarchy (XRefs layer, incoming calls)
Support for outgoing calls is left for a future change.

Differential Revision: https://reviews.llvm.org/D91122
2020-11-23 20:43:38 -05:00
Kadir Cetinkaya 61e538b15d
Revert "[clangd] testPath's final result agrees with the passed in Style"
This reverts commit 8cec8de2a4 as it
breaks windows buildbots.
2020-11-23 13:12:59 +01:00
Kadir Cetinkaya 8cec8de2a4
[clangd] testPath's final result agrees with the passed in Style
This was confusing, as testRoot on windows results in C:\\clangd-test
and testPath generated with posix explicitly still contained backslashes.

This patch ensures not only the relative part, but the whole final result
respects passed in Style.

Differential Revision: https://reviews.llvm.org/D91947
2020-11-23 12:45:06 +01:00
Kadir Cetinkaya fee78fb004
[clangd] Second attempt at fixing windows buildbots 2020-11-23 10:06:48 +01:00
Kadir Cetinkaya 0dc2589d4a
[clangd] Attempt at fixing ExternalIndex tests on windows 2020-11-23 09:16:06 +01:00
Kadir Cetinkaya 655360096f
[clangd] Fix use-after-free in ProjectAwareIndex tests 2020-11-22 21:29:45 +01:00
Kadir Cetinkaya 067ffbfe60
[clangd] Introduce ProjectAwareIndex
An index implementation that can dispatch to a variety of indexes
depending on the file path. Enables clangd to work with multiple indexes in the
same instance, configured via config files.

Depends on D90749, D90746

Differential Revision: https://reviews.llvm.org/D90750
2020-11-22 20:59:37 +01:00
Kadir Cetinkaya c9776c8d4e
[clangd] Introduce config compilation for External blocks
Compilation logic for External blocks. A few of the high level points:
- Requires exactly one-of File/Server at a time:
  - Server is ignored in case of both, with a warning.
  - Having none is an error, would render ExternalBlock void.
- Ensures mountpoint is an absolute path:
  - Interprets it as relative to FragmentDirectory.
  - Defaults to FragmentDirectory when empty.
- Marks Background as Skip.

Depends on D90748.

Differential Revision: https://reviews.llvm.org/D90749
2020-11-22 20:59:37 +01:00
Kadir Cetinkaya 359e2f988d
[clangd] Introduce config parsing for External blocks
Enable configuration of remote and static indexes through config files
in addition to command line arguments.

Differential Revision: https://reviews.llvm.org/D90748
2020-11-22 20:59:37 +01:00
Nathan James 20b69af7c9
[clangd] Add clang-tidy options to config
First step of implementing clang-tidy configuration into clangd config.
This is just adding support for reading and verifying the clang tidy options from the config fragments.
No support is added for actually using the options within clang-tidy yet.

That will be added in a follow up as its a little more involved.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D90531
2020-11-22 10:04:01 +00:00
Kirill Bobyrev da14ae23a5
[clangd] NFC: Reorder headers in tests accordig to Clang-Tidy 2020-11-20 10:38:41 +01:00
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
Sam McCall ad5a195ae5 [clangd] Express ASAN interactions of tests more clearly. NFC 2020-11-19 20:14:51 +01:00
Sam McCall d7747dacba [clangd] Also detect corrupt stri table size.
Differential Revision: https://reviews.llvm.org/D91299
2020-11-19 20:11:14 +01:00
Haojian Wu 734d2f98f6 [clangd] No crash on "-verify" mode.
If there is a "-verify" flag in the compile command, clangd will crash
(hit the assertion) inside the `~VerifyDiagnosticConsumer` (Looks like our
compiler invocation doesn't setup correctly?).

This patch disables the verify mode as it is rarely useful in clangd.

Differential Revision: https://reviews.llvm.org/D91777
2020-11-19 15:51:53 +01:00
Kirill Bobyrev 140783347a [clangd] Disable SerializationTest.NoCrashOnBadArraySize with ASAN
Address Sanitizer crashes on large allocations:

```c++
// Try to crash rather than hang on large allocation.
ScopedMemoryLimit MemLimit(1000 * 1024 * 1024); // 1GB
```
2020-11-19 13:24:55 +01:00
Kadir Cetinkaya 7c2990b8af
[clangd] Fix data race in GoToInclude.All test 2020-11-19 08:47:43 +01:00
Utkarsh Saxena 130da802ff Revert "Revert "[clangd] Implement textDocument/implementation (Xref layer)""
This reverts commit 0016ab6f36.

Fix: Consume error from Expected<T>.
2020-11-18 19:09:16 +01:00
Utkarsh Saxena 0016ab6f36 Revert "[clangd] Implement textDocument/implementation (Xref layer)"
This reverts commit 43243208fa.
2020-11-18 18:05:16 +01:00
Utkarsh Saxena 43243208fa
[clangd] Implement textDocument/implementation (Xref layer)
Xref layer changes for textdocument/implementation (https://microsoft.github.io/language-server-protocol/specification#textDocument_implementation)

This currently shows all functions (implementations) that overrides a virtual function.

Differential Revision: https://reviews.llvm.org/D91702
2020-11-18 17:06:47 +01:00
Utkarsh Saxena 4bc085f5b3 [clangd] Add OverridenBy Relation to index.
This was previously explored in reviews.llvm.org/D69094.

Differential Revision: https://reviews.llvm.org/D91610
2020-11-18 06:59:49 +01:00
Kadir Cetinkaya 6e7dd1e3e1
[clangd] Assert on varint encoding
5th byte of a varint can't be bigger than 0x0f, fix a test and add an
assertion.

Differential Revision: https://reviews.llvm.org/D91405
2020-11-13 17:01:07 +01:00
Kirill Bobyrev a115248282
[clangd] Add missing tests to rename feature
This adds a couple of missed tests from existing clang-rename ones and
introduces several new ones (e.g. static class member). This patch is required
to ensure feature parity for migration off Clang-Rename API D71880.

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D91337
2020-11-13 12:27:40 +01:00
Sam McCall 3c09103291 [clangd] Sanity-check array sizes read from disk before allocating them.
Previously a corrupted index shard could cause us to resize arrays to an
arbitrary int32. This tends to be a huge number, and can render the
system unresponsive.

Instead, cap this at the amount of data that might reasonably be read
(e.g. the #bytes in the file). If the specified length is more than that,
assume the data is corrupt.

Differential Revision: https://reviews.llvm.org/D91258
2020-11-11 23:16:53 +01:00
Kirill Bobyrev 91ce6fb5a6
[clangd] Abort rename when given the same name
When user wants to rename the symbol to the same name we shouldn't do any work.
Bail out early and return error to save compute.

Resolves: https://github.com/clangd/clangd/issues/580

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D91134
2020-11-11 11:13:47 +01:00
Kirill Bobyrev ca892f46fe
[clangd] Enhance Clangd rename testing coverage
We plan to eliminate error-prone and obsolete Clang-Rename API from Clangd. To
do that, we will introduce Decl canonicalization rules that will make renaming
code simpler and easier to maintain (D71880).

To ensure smooth transition to the new implementation, many Clang-Rename tests
will be adopted in Clangd to prevent any possible regressions. This patch is
the first in the chain of test migration patches. It improves existing tests
and adopts tests from Clang-Rename's alias, class and enum testing files.

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D91102
2020-11-10 10:08:49 +01:00
Haojian Wu daa736da10 [clangd] Add basic conflict detection for the rename.
With this patch, we reject the rename if the new name would conflict with
any other decls in the decl context of the renamed decl.

Differential Revision: https://reviews.llvm.org/D89790
2020-11-10 08:52:30 +01:00
Nathan James 5918ef8b1a
[clangd] Handle duplicate enum constants in PopulateSwitch tweak
If an enum has different names for the same constant, make sure only the first one declared gets added into the switch. Failing to do so results in a compiler error as 2 case labels can't represent the same value.

```
lang=c
enum Numbers{
One,
Un = One,
Two,
Deux = Two,
Three,
Trois = Three
};

// Old behaviour
switch (<Number>) {
  case One:
  case Un:
  case Two:
  case Duex:
  case Three:
  case Trois: break;
}

// New behaviour
switch (<Number>) {
  case One:
  case Two:
  case Three: break;
}
```

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D90555
2020-11-09 12:14:53 +00:00
Nathan Ridge 3bec07f91f [clangd] Store the containing symbol for refs
This is needed to implement call hierarchy.

Differential Revision: https://reviews.llvm.org/D89670
2020-11-04 03:21:45 -05:00
Kadir Cetinkaya 7f059a258a
[clangd] Handle absolute/relative path specifications in Config
This introduces a mechanism for providers to interpret paths specified
in a fragment either as absolute or relative to fragment location.
This information should be used during compile stage to handle blocks correctly.

Differential Revision: https://reviews.llvm.org/D90270
2020-11-03 21:45:35 +01:00
Sam McCall 65eaec9bd3 [clangd] Add -log=public to redact all request info from index server logs
The index server has access to potentially-sensitive information, e.g. a
sequence of fuzzyFind requests reveals details about code completions in the
editor which in turn reveals details about the code being edited.
This information is necessary to provide the service, and our intention[1] is it
should never be retained beyond the scope of the request (e.g. not logged).

At the same time, some log messages should be exposed:
 - server startup/index reloads etc that don't pertain to a user request
 - basic request logs (method, latency, #results, error code) for monitoring
 - errors while handling requests, without request-specific data
The -log=public design accommodates these by allowing three types of logs:
 - those not associated with any user RPC request (via context-propagation)
 - those explicitly tagged as [public] in the log line
 - logging of format strings only, with no interpolated data (error level only)

[1] Specifically: Google is likely to run public instances of this server
for LLVM and potentially other projects, they will run in this configuration.
The details agreed in a Google-internal privacy review.
As clangd developers, we'd encourage others to use this configuration for public
instances too.

Differential Revision: https://reviews.llvm.org/D90526
2020-11-02 21:25:12 +01:00
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
Ilya Golovenko 6d15a28a85 [clangd] Fix ParsedASTTest.TopLevelDecls test.
Google test matcher `DeclKind` uses `NamedDecl::getDeclKindName()` to compare its result with expected declaration name.
Both, returned value of this function and the expected kind name argument have type `const char *`, so this matcher effectively
compares two pointers instead of the respective strings.

The test was passing on most platforms because compilers mostly were able to coalesce these string literals.

Patch By: Ilya Golovenko

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D90384
2020-11-02 08:37:04 +01:00
Simon Pilgrim 888969f62a [clangd] Fix MSVC implicit capture build failure.
MSVC builds were failing because the constexpr wasn't couldn't be captured by the lamdba.

Fix an implicit double to float truncation warning as well.
2020-10-30 11:36:59 +00:00
Utkarsh Saxena 7df80a1204 [clangd] Add support for multiple DecisionForest model experiments.
With every incremental change, one needs to check-in new model upstream.
This also significantly increases the size of the git repo with every
new model.
Testing and comparing the old and previous model is also not possible as
we run only a single model at any point.

One solution is to have a "staging" decision forest which can be
injected into clangd without pushing it to upstream. Compare the
performance of the staging model with the live model. After a couple of
enhancements have been done to staging model, we can then replace the
live model upstream with the staging model. This reduces upstream churn
and also allows us to compare models with current baseline model.

This is done by having a callback in CodeCompleteOptions which is called
only when we want to use a decision forest ranking model. This allows us
to inject different completion model internally.

Differential Revision: https://reviews.llvm.org/D90014
2020-10-29 19:49:40 +01:00
Sam McCall 0e94836989 [clangd] Go-to-definition from non-renaming alias is unambiguous.
It's not helpful to show the alias itself as an option.
This fixes a regression accepted in f24649b77d.

Differential Revision: https://reviews.llvm.org/D89238
2020-10-28 20:17:35 +01:00
Sam McCall 87f03e13ce [clangd] Don't offer to expand auto in structured binding declarations.
auto must be used for the code to parse.

Differential Revision: https://reviews.llvm.org/D89700
2020-10-28 18:55:23 +01:00
Kadir Cetinkaya 68b48339e5
[clangd] Fix a null dereference in tests. 2020-10-28 18:24:26 +01:00
Kirill Bobyrev 5ad6bbacf0
[clangd] Start using SyntaxTrees for folding ranges feature
This is an initial attempt to start using Syntax Trees in clangd while improving state of folding ranges feature and experimenting with Syntax Tree capabilities.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D88553
2020-10-27 16:47:35 +01:00
Nathan Ridge aaa8b44d19 [clangd] Add a TestWorkspace utility
TestWorkspace allows easily writing tests involving multiple
files that can have inclusion relationships between them.

BackgroundIndexTest.RelationsMultiFile is refactored to use
TestWorkspace, and moved to FileIndexTest as it no longer
depends on BackgroundIndex.

Differential Revision: https://reviews.llvm.org/D89297
2020-10-24 20:15:17 -04:00
Sam McCall ce63383e45 [clangd] Drop version from remote index proto names, fix clangd-index-server
We only need to version these messages if they actually diverge.
Unlike the service, the namespace name isn't part of the wire format.

clangd-index-server was broken by 81e5f298c4
as the namespace names weren't updated there, this fixes it (by adding
them for the service, and not requiring them elsewhere).
2020-10-23 15:28:11 +02:00
Kirill Bobyrev 81e5f298c4 [clangd] Give the server information about client's remote index protocol version
And also introduce Protobuf package versioning, it will help to deal
with breaking changes. Inroducing package version itself is a breaking
change, clients and servers need to be updated.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D89862
2020-10-22 21:35:18 +02:00
David Goldman d5c022d846 [clangd][ObjC] Support nullability annotations
Nullability annotations are implmented using attributes; previusly
clangd would skip over AttributedTypeLoc since their location
points to the attribute instead of the modified type.

Also add some test cases for this.

Differential Revision: https://reviews.llvm.org/D89579
2020-10-20 17:36:32 -04:00
Aleksandr Platonov d99b2a976a [clangd][remote] Add Windows paths support
Without this patch 6 marshalling tests fail on Windows.
This patch contains the following changes:
- Allow paths with Windows slashes (convert to the POSIX style instead of assertion)
- Add support for URI with Windows path.
- Change the value of the second parameter of several `llvm::sys::path::convert_to_slash()` calls: we should use `windows` instead of `posix` to ensure UNIX slashes in the path.
- Port `RemoteMarshallingTest::IncludeHeaderURI` test to Windows.

Reviewed By: kbobyrev

Differential Revision: https://reviews.llvm.org/D89529
2020-10-20 13:04:20 +03:00
Sam McCall cf814fcd39 [clangd] Add test for structured-binding completion. NFC 2020-10-19 16:45:51 +02:00
Kadir Cetinkaya 4074914103
[clangd] Rename edge name for filesymbols to slabs in memorytree
This was causing duplicate `symbols` components on the path as both the
edge from an index to filesymbols and filesymbols to symbolslabs were named
symbols.

Differential Revision: https://reviews.llvm.org/D89685
2020-10-19 16:09:46 +02:00
Kadir Cetinkaya fc2fb60bab
[clangd] clang-format TweakTests, NFC 2020-10-14 18:14:27 +02:00
Kadir Cetinkaya 82a71822a5
[clangd] Disable extract variable for RHS of assignments
Differential Revision: https://reviews.llvm.org/D89307
2020-10-14 14:22:47 +02:00
Haojian Wu 3fcca804b2 [clangd] Refine recoveryAST flags in clangd
so that we could start experiment for C.

Previously, these flags in clangd were only meaningful for C++. We need
to flip them for C, this patch repurpose these flags.

- if true, just set it.
- if false, just respect the value in clang.

this would allow us to keep flags on for C++, and optionally flip them on for C.

Differential Revision: https://reviews.llvm.org/D89233
2020-10-14 13:42:11 +02:00
Nathan Ridge b764edc59f [clangd] Try harder to get accurate ranges for documentSymbols in macros
Fixes https://github.com/clangd/clangd/issues/500

Differential Revision: https://reviews.llvm.org/D88463
2020-10-12 19:26:36 -04:00
Nathan Ridge 1b962fdd5f [clangd] Heuristic resolution for dependent type and template names
Fixes https://github.com/clangd/clangd/issues/543

Differential Revision: https://reviews.llvm.org/D88469
2020-10-12 13:37:22 -04:00
Haojian Wu 16a4b0f0e3 [clangd] Disable a failure TopLevelDecls test.
The test fails on clang-ppc64le-rhel buildbot, needs further
investigation.
2020-10-12 16:03:52 +02:00
Haojian Wu b144cd867b Dump decl when the test matcher fails. 2020-10-12 15:42:18 +02:00
Kadir Cetinkaya 35871fde55
[clangd] Record memory usages after each notification
Depends on D88415

Differential Revision: https://reviews.llvm.org/D88417
2020-10-12 15:25:29 +02:00
Kadir Cetinkaya 23a53301c5
[clangd] Introduce memory usage dumping to TUScheduler, for Preambles and ASTCache
File-granular information is considered details.

Depends on D88411

Differential Revision: https://reviews.llvm.org/D88415
2020-10-12 15:25:29 +02:00
Kadir Cetinkaya a74d594948
[clangd] Introduce memory dumping to FileIndex, FileSymbols and BackgroundIndex
File-granular information is considered details.

Depends on D88411

Differential Revision: https://reviews.llvm.org/D88414
2020-10-12 15:25:29 +02:00
Kadir Cetinkaya c9d2876da9
[clangd] Add a metric for tracking memory usage
Differential Revision: https://reviews.llvm.org/D88413
2020-10-12 15:25:29 +02:00
Kadir Cetinkaya f9317f7bf6
[clangd] Introduce MemoryTrees
A structure that can be used to represent memory usage of a nested
set of systems.

Differential Revision: https://reviews.llvm.org/D88411
2020-10-12 15:25:29 +02:00
Sam McCall 8f1de22c76 [clangd] Stop capturing trace args if the tracer doesn't need them.
The tracer is now expected to allocate+free the args itself.

Differential Revision: https://reviews.llvm.org/D89135
2020-10-12 13:43:05 +02:00
Haojian Wu f1bf41e433 Fix buildbot failure for 702529d899. 2020-10-12 12:04:44 +02:00
Haojian Wu 702529d899 [clang] Fix returning the underlying VarDecl as top-level decl for VarTemplateDecl.
Given the following VarTemplateDecl AST,

```
VarTemplateDecl col:26 X
|-TemplateTypeParmDecl typename depth 0 index 0
`-VarDecl X 'bool' cinit
  `-CXXBoolLiteralExpr 'bool' true
```

previously, we returned the VarDecl as the top-level decl, which was not
correct, the top-level decl should be VarTemplateDecl.

Differential Revision: https://reviews.llvm.org/D89098
2020-10-12 10:46:18 +02:00
Nathan Ridge f82346fd73 [clangd] Avoid relations being overwritten in a header shard
Fixes https://github.com/clangd/clangd/issues/510

Differential Revision: https://reviews.llvm.org/D87256
2020-10-11 15:32:54 -04:00
Kadir Cetinkaya 6f1a56d37a
[clangd] Enable partial namespace matches for workspace symbols
This will enable queries like "clangd::" to find symbols under clangd
namespace, without requiring full "clang::clangd::" qualification.

Since Fuzzyfind performs the search under all scopes and only boosts the symbols
from relevant namespaces, we might get symbols from non-matching namespaces.
This patch chooses to drop those as they clearly do not match the query.

Fixes https://github.com/clangd/clangd/issues/550.

Differential Revision: https://reviews.llvm.org/D88814
2020-10-09 10:20:41 +02:00
Kadir Cetinkaya 2ff44935a5
[clangd] Reduce availability of extract function
This patch introduces hoisting detection logic into prepare state with
a partial AST traversal of the enclosing function.

We had some complaints from the users about this code action being almost always
available but failing most of the time. Hopefully this should reduce that noise.

The latency/correctness tradeoff is a bunch of hand-waving, but at least today
we don't have any other actions that are available on selection of statements,
so when we get to do the traversal it is quite likely that all the other checks
will bail out early. But this is still up for discussion, I am happy to abandon
the patch if you believe this is not practical.

Differential Revision: https://reviews.llvm.org/D85354
2020-10-09 10:12:48 +02:00
Haojian Wu efd8c9ed72 [clangd] Add more incomplete_type diagnostics that could be fixed by include-fixer.
Differential Revision: https://reviews.llvm.org/D89036
2020-10-09 08:51:18 +02:00
Haojian Wu a4e27220c2 [clangd] Add a missing include-fixer test for incomplete_type, NFC.
Also sort the list to make it easier to verify with the implementation
code.

Differential Revision: https://reviews.llvm.org/D88964
2020-10-08 13:33:38 +02:00
Haojian Wu 9c09e2055e [clangd] Add a NewName optional parameter to clangdServer::prepareRename.
If the NewName is provided, prepareRename would perform a name
validation.

The motivation is to allow our internal embeder implement the customized
"canRenameInto" functionality on top of prepareRename.

Differential Revision: https://reviews.llvm.org/D88881
2020-10-07 21:18:51 +02:00
Sam McCall 69daa368ca [clangd] Disambiguate overloads of std::move for header insertion.
Up until now, we relied on matching the filename.
This depends on unstable details of libstdc++ and doesn't work well on other
stdlibs. Also we'd like to remove it (see D88204).

Differential Revision: https://reviews.llvm.org/D88885
2020-10-07 19:42:41 +02:00
Haojian Wu f24649b77d [clangd] Don't set the Underlying bit on targets of UsingDecls.
With this patch, we don't treat `using ns::X` as a first-class declaration like `using Z = ns::Y`, reference to X that goes through this using-decl is considered a direct reference (without the Underlying bit).

Fix the workaround in https://reviews.llvm.org/D87225 and https://reviews.llvm.org/D74054.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D88472
2020-10-07 10:01:04 +02:00
Haojian Wu 8a3cbb1535 [clangd] Add basic keyword-name-validation in rename.
Differential Revision: https://reviews.llvm.org/D88875
2020-10-06 15:47:57 +02:00
Haojian Wu 48a82c4245 [clangd] Verify the diagnostic code in include-fixer diagnostic tests, NFC.
Make it easier to spot which diagnostics in the include-fixer list are tested.

Differential Revision: https://reviews.llvm.org/D88828
2020-10-06 11:02:22 +02:00
Haojian Wu 1425c72236 [clangd] Add isKeyword function.
This will be used in rename for doing basic name validation.

Differential Revision: https://reviews.llvm.org/D88810
2020-10-05 15:11:24 +02:00
Haojian Wu 96c8a17c80 [clangd] Remove unused using-decls in TypeHierarchyTests, NFC. 2020-10-05 13:14:53 +02:00
Haojian Wu 0f0cbcc4b1 [clangd] Extend the rename API.
several changes:
- return a structure result in rename API;
- prepareRename now returns more information (main-file occurrences);
- remove the duplicated detecting-touch-identifier code in prepareRename (which is implemented in rename API);

Differential Revision: https://reviews.llvm.org/D88634
2020-10-02 16:03:44 +02:00
Sam McCall 216af81c39 [clangd] Fix invalid UTF8 when extracting doc comments.
Differential Revision: https://reviews.llvm.org/D88567
2020-09-30 16:05:12 +02:00
Sam McCall 7ba0779fbb [clangd] Extract options struct for ClangdLSPServer. NFC
In preparation for making moving TweakFilter from ClangdServer::Options to
a ClangdLSPServer option, and letting it vary per-request.
(In order to implement CodeActionParams.only)

Also a general overdue cleanup.

Differential Revision: https://reviews.llvm.org/D88470
2020-09-30 10:09:52 +02:00
Nathan James 01a30fa678
[clangd] Trivial setter support when moving items to fields
Extend the Trivial setter documentation to support cases where the value is moved into a field using `std::move`.

Reviewed By: sammccall, kadircet

Differential Revision: https://reviews.llvm.org/D88297
2020-09-29 21:51:15 +01:00
Aleksandr Platonov d8ba6b4ab3 [clangd] findNearbyIdentifier(): guaranteed to give up after 2^N lines
As @kadircet mentions in D84912#2184144, `findNearbyIdentifier()` traverses the whole file if there is no identifier for the word.
This patch ensures give up after 2^N lines in any case.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D87891
2020-09-29 19:54:55 +03:00
Tadeo Kondrak 4fb303f340 [clangd] Improve PopulateSwitch tweak to work on non-empty switches
Improve the recently-added PopulateSwitch tweak to work on non-empty switches.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D88434
2020-09-29 16:37:51 +02:00
Nathan Ridge cc6d1f8029 [clangd] When finding refs for a renaming alias, do not return refs to underlying decls
Fixes https://github.com/clangd/clangd/issues/515

Differential Revision: https://reviews.llvm.org/D87225
2020-09-28 21:18:31 -04:00
Utkarsh Saxena 9b1666f3ce [clangd] Rename evaluate() to evaluateHeuristics()
Since we have 2 scoring functions (heuristics and decision forest),
renaming the existing evaluate() function to be more descriptive of the
Heuristics being evaluated in it.

Differential Revision: https://reviews.llvm.org/D88431
2020-09-28 20:05:01 +02:00
Utkarsh Saxena a8b55b6939 [clangd] Use Decision Forest to score code completions.
By default clangd will score a code completion item using heuristics model.

Scoring can be done by Decision Forest model by passing `--ranking_model=decision_forest` to
clangd.

Features omitted from the model:
- `NameMatch` is excluded because the final score must be multiplicative in `NameMatch` to allow rescoring by the editor.
- `NeedsFixIts` is excluded because the generating dataset that needs 'fixits' is non-trivial.

There are multiple ways (heuristics) to combine the above two features with the prediction of the DF:
- `NeedsFixIts` is used as is with a penalty of `0.5`.

Various alternatives of combining NameMatch `N` and Decision forest Prediction `P`
- N * scale(P, 0, 1): Linearly scale the output of model to range [0, 1]
- N * a^P:
  - More natural: Prediction of each Decision Tree can be considered as a multiplicative boost (like NameMatch)
  - Ordering is independent of the absolute value of P. Order of two items is proportional to `a^{difference in model prediction score}`. Higher `a` gives higher weightage to model output as compared to NameMatch score.

Baseline MRR = 0.619
MRR for various combinations:
N * P = 0.6346, advantage%=2.5768
N * 1.1^P = 0.6600, advantage%=6.6853
N * **1.2**^P = 0.6669, advantage%=**7.8005**
N * **1.3**^P = 0.6668, advantage%=**7.7795**
N * **1.4**^P = 0.6659, advantage%=**7.6270**
N * 1.5^P = 0.6646, advantage%=7.4200
N * 1.6^P = 0.6636, advantage%=7.2671
N * 1.7^P = 0.6629, advantage%=7.1450
N * 2^P = 0.6612, advantage%=6.8673
N * 2.5^P = 0.6598, advantage%=6.6491
N * 3^P = 0.6590, advantage%=6.5242
N * scaled[0, 1] = 0.6465, advantage%=4.5054

Differential Revision: https://reviews.llvm.org/D88281
2020-09-28 18:59:29 +02:00
Tadeo Kondrak 018066d947 [clangd] Add a tweak for filling in enumerators of a switch statement.
Add a tweak that populates an empty switch statement of an enumeration type with all of the enumerators of that type.

Before:
```
enum Color { RED, GREEN, BLUE };
void f(Color color) {
  switch (color) {}
}
```

After:
```
enum Color { RED, GREEN, BLUE };
void f(Color color) {
  switch (color) {
  case RED:
  case GREEN:
  case BLUE:
    break;
  }
}
```

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D88383
2020-09-28 13:37:18 +02:00
Kadir Cetinkaya 64168c6d99
[clangd] Disable suffix matching fallback for C during include insertion
Clangd currently doesn't respect language and breaks the builds with
include insertion for C. This patch aims to stop the bleeding by not mapping
back to CPP standard library headers.

Improves https://github.com/clangd/clangd/issues/376.

Differential Revision: https://reviews.llvm.org/D88144
2020-09-24 10:46:10 +02:00
Nathan Ridge aa3c7638ba [clang] Traverse init-captures while indexing
Fixes https://github.com/clangd/clangd/issues/496

Differential Revision: https://reviews.llvm.org/D87257
2020-09-22 02:32:09 -04:00
Utkarsh Saxena 985deba931 Revert "Temporarily Revert "[clangd] Add Random Forest runtime for code completion.""
We intend to replace heuristics based code completion ranking with a Decision Forest Model.

This patch introduces a format for representing the model and an inference runtime that is code-generated at build time.
- Forest.json contains all the trees as an array of trees.
- Features.json describes the features to be used.
- Codegen file takes the above two files and generates CompletionModel containing Feature struct and corresponding Evaluate function.
   The Evaluate function maps a feature to a real number describing the relevance of this candidate.
- The codegen is part of build system and these files are generated at build time.
- Proposes a way to test the generated runtime using a test model.
  - Replicates the model structure in unittests.
  - unittest tests both the test model (for correct tree traversal) and the real model (for sanity).

This reverts commit 549e55b3d5.
2020-09-19 10:54:04 +02:00
Eric Christopher 549e55b3d5 Temporarily Revert "[clangd] Add Random Forest runtime for code completion."
as a header doesn't appear to have made it into the commit.

This reverts commit 9b6765e784 and followup
2020-09-18 14:47:43 -07:00
Utkarsh Saxena 9b6765e784 [clangd] Add Random Forest runtime for code completion.
Summary:
[WIP]
- Proposes a json format for representing Random Forest model.
- Proposes a way to test the generated runtime using a test model.

TODO:
- Add generated source code snippet for easier review.
- Fix unused label warning.
- Figure out required using declarations for CATEGORICAL columns from Features.json.
- Necessary Google3 internal modifications for blaze before landing.
- Add documentation for format of the model.
- Document more.

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83814
2020-09-18 19:25:56 +02:00
Adam Czachorowski c894bfd1f5 [clangd] Add option for disabling AddUsing tweak on some namespaces.
For style guides forbid "using" declarations for namespaces like "std".
With this new config option, AddUsing can be selectively disabled on
those.

Differential Revision: https://reviews.llvm.org/D87775
2020-09-18 16:46:09 +02:00
Adam Czachorowski 7029e5d4ca [clangd] Actually parse Index section of the YAML file.
This fixes a bug in dbf486c0de, which
introduced the Index section of the config, but did not register the
parse method, so it didn't work in a YAML file (but did in a test).

Differential Revision: https://reviews.llvm.org/D87710
2020-09-16 13:11:02 +02:00
Sam McCall 687e1d7121 [clangd] makeStringError,make_error<StringError> -> error() 2020-09-14 11:48:31 +02:00
Sam McCall 30667c967d [clangd] Add error() function for creating formatv-style llvm::Errors. NFC
Summary:
This is considerably terser than the makeStringError and friends, and
avoids verbosity cliffs that discourage adding log information.

It follows the syntax used in log/elog/vlog/dlog that have been successful.

The main caveats are:
 - it's strictly out-of-place in logger.h, though kind of fits thematically and
   in implementation
 - it claims the "error" identifier, which seems a bit too opinionated
   to put higher up in llvm

I've updated some users of StringError mostly at random - there are lots
more mechanical changes but I'd like to get this reviewed before making
them all.

Reviewers: kbobyrev, hokein

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83419
2020-09-14 10:43:42 +02:00
Nathan Ridge ca842c825a [clangd] Handle templates more consistently in type hierarchy
If the tree includes types derived from all specializations of
a template, do not misleadingly label the root node with the
name of a single specialization.

Fixes https://github.com/clangd/clangd/issues/507

Differential Revision: https://reviews.llvm.org/D86861
2020-09-01 19:18:37 -04:00
Haojian Wu 0aaa2acc4c [clangd] Compute the inactive code range for semantic highlighting.
Differential Revision: https://reviews.llvm.org/D85635
2020-08-26 10:50:31 +02:00
Adam Czachorowski 4d90ff59ac [clangd] When inserting "using", add "::" in front if that's the style.
We guess the style based on the existing using declarations. If there
are any and they all start with ::, we add it to the newly added one
too.

Differential Revision: https://reviews.llvm.org/D86473
2020-08-25 14:07:49 +02:00
Adam Czachorowski b488935320 [clangd] Discard diagnostics from another SourceManager.
This can happen when building implicit modules, as demonstrated in test.
The CompilerInstance uses the same StoredDiags, but different
SourceManager. This used to crash clangd when it tried to relocate the
diagnostic to the main file, which, according to SourceManager from the
diagnostic, is a fake <module-includes> file.

Differential Revision: https://reviews.llvm.org/D85753
2020-08-21 13:11:21 +02:00
Aleksandr Platonov 4457398265 [clangd] Don't crash on `#pragma clang __debug parser_crash`
Currently, clangd crashes when opening a file with `#pragma clang __debug parser_crash` (e.g. clang/test/Modules/Inputs/crash.h).
This patch disables these crashes.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D86279
2020-08-20 15:53:21 +03:00
Adam Czachorowski 707138d677 [clangd] Remove useless stderr logging.
This was accidentally added in 53b9199a5c

Differential Revision: https://reviews.llvm.org/D86284
2020-08-20 14:52:04 +02:00
Adam Czachorowski baeff989b0 [clang] When loading preamble from AST file, re-export modules in Sema.
This addresses a FIXME in ASTReader.

Modules were already re-exported for Preprocessor, but not for Sema.
The result was that, with -fmodules-local-submodule-visibility, all AST
nodes belonging to a module that was loaded in a premable where not
accesible from the main part of the file and a diagnostic recommending
importing those modules would be generated.

Differential Revision: https://reviews.llvm.org/D86069
2020-08-20 14:19:52 +02:00
Adam Czachorowski 53b9199a5c [clangd] Fix crash-bug in preamble indexing when using modules.
When preamble contains #undef, indexing code finds the matching #define
and uses that during indexing. However, it would only look for local
definitions. If the macro was defined in a module, MacroInfo
would be nullptr and clangd would crash.

This change makes clangd ignore any #undef without a matching #define
inside the same TU.

The indexing of macros happens for preamble only, so then #undef must be
in the preamble, which is why we need two .h files in a test.

Note that clangd is currently not ready for module support, but this
brings us one step closer.

This was previously attempted in
4061d9e42c, but had to be reverted due to
broken test. This version fixes that test-only bug by setting a custom module
cache path to avoid re-use of modules across test invocations.

Differential Revision: https://reviews.llvm.org/D85923
2020-08-20 14:19:52 +02:00
Nathan Ridge e33ec9d904 [clangd] Target member of dependent base made visible via a using-decl
Fixes https://github.com/clangd/clangd/issues/307

Differential Revision: https://reviews.llvm.org/D86047
2020-08-18 03:03:49 -04:00
Nathan Ridge 00d7b7d014 [clang] Fix visitation of ConceptSpecializationExpr in constrained-parameter
Summary: RecursiveASTVisitor needs to traverse TypeConstraint::ImmediatelyDeclaredConstraint

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D84136
2020-08-18 00:32:34 -04:00
Nathan Ridge 15673d748a [clangd] Index refs to main-file symbols as well
Summary: This will be needed to support call hierarchy

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83536
2020-08-18 00:30:07 -04:00
Kadir Cetinkaya 53c593c2c8
[clang] Make signature help work with dependent args
Fixes https://github.com/clangd/clangd/issues/490

Differential Revision: https://reviews.llvm.org/D85826
2020-08-17 10:06:36 +02:00
zacharyselk caac40fa5a [clang-tools-extra] Added missing comma
The new diagnostic tool (D85545) caught a missing comma, adding one to fix the warning.

Differential Revision: https://reviews.llvm.org/D85978
2020-08-14 12:27:30 -06:00
Kadir Cetinkaya 0464acd019
[clangd] Move clang-tidy check modifications into ClangdServer
Summary:
This enables sharing the logic between standalone clangd and embedders
of it. The new approach should be same performance-wise, as it is only called
once per addDocument call.

This patch also introduces a blacklisting code path for disabling crashy or
high-noise tests, until we figure out a way to make them work with clangd-setup.

The biggest difference is the way we make use of preambles, hence those checks
can't see directives coming from the preamble section of the file. The second
thing is the fact that code might-not be compiling while clangd is trying to
build an AST, hence some checks might choke on those incomplete ASTs.

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83224
2020-08-13 18:32:59 +02:00
Kadir Cetinkaya 66a2e3a525
[clangd] Send EOF before resetting diagnostics consumer
Summary:
Some clang-tidy checkers, e.g. llvm-include-order can emit diagnostics
at this callback (as mentioned in the comments).

Clangd was resetting diag consumer to IgnoreDiags before sending EOF, hence we
were unable to emit diagnostics for such checkers.

This patch changes the order of that reset and preprocosser event to make sure
we emit that diag.

Fixes https://github.com/clangd/clangd/issues/314.

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83178
2020-08-13 18:32:59 +02:00
Sam McCall b36e22d644 [clangd] Extract BackgroundIndex::Options struct. NFC
I've dropped the background context parameter, since we in practice just pass the
current context there, and we now have a different way to specify context too.
While here, clean up a couple of comments.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D83157
2020-08-13 18:12:54 +02:00
Sam McCall 98cf77e337 [clangd] Clean up old test fixture/names a little. NFC 2020-08-13 17:43:11 +02:00