This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated. The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.
This is part of an effort to migrate from llvm::Optional to
std::optional:
https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
This is mostly a mechanical change to adapt standard type hierarchy
support proposed in LSP 3.17 on top of clangd's existing extension support.
This does mainly two things:
- Incorporate symbolids for all the parents inside resolution parameters, so
that they can be retrieved from index later on. This is a new code path, as
extension always resolved them eagerly.
- Propogate parent information when resolving children, so that at least one
branch of parents is always preserved. This is to address a shortcoming in the
extension.
This doesn't drop support for the extension, but it's deprecated from now on and
will be deleted in upcoming releases. Currently we use the same struct
internally but don't serialize extra fields.
Fixes https://github.com/clangd/clangd/issues/826.
Differential Revision: https://reviews.llvm.org/D131385
Building preambles is the most resource-intensive thing clangd does, driving
peak RAM and sustained CPU usage.
In a hosted environment where multiple clangd instances are packed into the same
container, it's useful to be able to limit the *aggregate* resource peaks.
Differential Revision: https://reviews.llvm.org/D129100
Tracked down the crash, which was argument-evaluation-order UB
in the wrapping indexStandardLibrary().
Sorry for the churn!
This reverts commit 77533ea443.
This reverts commit ccdb56ac10.
Still seeing windows failures on GN bots: http://45.33.8.238/win/58316/step_9.txt
Unfortunately I can't debug these at all - it's a bare unsymbolized
stacktrace, and I can't reproduce the failure.
This provides a nice "warm start" with all headers indexed, not just
those included so far.
The standard library is indexed after a preamble is parsed, using that
file's configuration. The result is pushed into the dynamic index.
If we later see a higher language version, we reindex it.
It's configurable as Index.StandardLibrary, off by default for now.
Based on D105177 by @kuhnel
Fixes https://github.com/clangd/clangd/issues/618
Differential Revision: https://reviews.llvm.org/D115232
I am working on support for forwarding parameter names in make_unique-like functions, first for inlay hints, later maybe for signature help.
For that to work generically, I'd like to parse all of these functions in the preamble. Not sure how this impacts performance on large codebases though.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D124688
Adds a option `use-dirty-preambles` to enable using unsaved in editor contents when building pre-ambles.
This enables a more seamless user experience when switching between header and implementation files and forgetting to save inbetween.
It's also in line with the LSP spec that states open files in the editor should be used instead of on the contents on disk - https://microsoft.github.io/language-server-protocol/overviews/lsp/overview/
For now the option is defaulted to off and hidden, Though I have a feeling it should be moved into the `.clangd` config and possibly defaulted to true.
Addresses https://github.com/clangd/clangd/issues/488
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D95046
This is a workaround (adding a newline to the eof) in clangd to avoid the code
completion crash, see https://github.com/clangd/clangd/issues/332.
In principle, this is a clang bug, we should fix it in clang, but it is not
trivial.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D117456
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
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
Some tweaks might edit file types not supported by clang-format. This
patch gives them a way to signal that they do not require formatting.
Differential Revision: https://reviews.llvm.org/D105039
Previously notification of the Server about semantic happened strictly
before notification of the AST thread.
Hence a racy Server could make a request (like semantic tokens) after
the notification, with the assumption that it'll be served fresh
content. But it wasn't true if AST thread wasn't notified about the
change yet.
This change reverses the order of those notifications to prevent racy
interactions.
Differential Revision: https://reviews.llvm.org/D102761
Due to a somewhat annoying, but necessary, shortfall in -Wunused-lambda-capture, These unused captures aren't warned about.
Reviewed By: kadircet
Differential Revision: https://reviews.llvm.org/D101611
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
Cross file tweaks can now use the dirty buffer contents easily when performing cross file effects.
This can be noted on the DefineOutline tweak, now working when the target file is unsaved
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D93978
These can be invoked at different stages while building an AST to let
FeatureModules implement features on top of it. The patch also
introduces a sawDiagnostic hook, which can mutate the final clangd::Diag
while reading a clang::Diagnostic.
Differential Revision: https://reviews.llvm.org/D98499
First patch to enable diagnostic fix generation through modules. The
workflow will look like:
- ASTWorker letting modules know about diagnostics while building AST,
modules can read clang::Diagnostic and mutate clangd::Diagnostic through
that hook.
- Modules can implement and expose tweaks to fix diagnostics or act as
general refactorings.
- Tweak::Selection will contain information about the diagnostic
associated with the codeAction request to enable modules to fail their
diagnostic fixing tweakson prepare if need be.
Differential Revision: https://reviews.llvm.org/D98498
Dummy is a word with inappropriate associations. This patch updates the
references to it in clangd code base with more precise ones.
The only user-visible change is the default variable name used when extracting a
variable. It will be named as `placeholder` from now on.
Differential Revision: https://reviews.llvm.org/D99065
Implement initial support for pull-based diagnostics in ClangdServer.
This is planned for LSP 3.17, and initial proposal is in
d15eb0671e/protocol/src/common/proposed.diagnostic.ts (L111).
We chose to serve the requests only when clangd has a fresh preamble
available. In case of a stale preamble we just drop the request on the
floor.
This patch doesn't plumb this to LSP layer yet, as pullDiags is still a
proposal with only an implementation in vscode.
Differential Revision: https://reviews.llvm.org/D98623
Refactor cross file rename to use a Filesystem instead of a function for getting buffer contents of open files.
Depends on D94554
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D95043
Create a `ThreadsafeFS` in the `DraftStore` that overlays the dirty file contents over another `ThreadsafeFS`.
This provides a nice thread-safe interface for using dirty file contents throughout the codebase, for example cross file refactoring.
Creating a Filesystem view will overlay a snapshot of the current contents, so if the draft store is updated while the view is being used, it will contain stale contents.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D94554
As pointed out in D96244, "Module" is already pretty overloaded to refer
to clang and llvm modules. (And clangd deals directly with the former).
FeatureModule is a bit of a mouthful but it's pretty self-descriptive.
I think it might be better than "Component" which doesn't really capture
the "common interface" aspect - it's IMO confusing to refer to
"components" but exclude CDB for example.
Differential Revision: https://reviews.llvm.org/D97950
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
ClangdServer already gets notified of every change, so it makes sense for it to
be the source of truth.
This is a step towards having ClangdServer expose a FS that includes dirty
buffers: D94554
Related changes:
- version is now optional for ClangdServer, to preserve our existing fuzziness
in this area (missing version ==> autoincrement)
- ClangdServer::format{File,Range} are now more regular ClangdServer functions
that don't need the code passed in. While here, combine into one function.
- incremental content update logic is moved from DraftStore to
ClangdLSPServer, with most of the implementation in SourceCode.cpp.
DraftStore is now fairly trivial, and will probably ultimately be
*replaced* by the dirty FS stuff.
Differential Revision: https://reviews.llvm.org/D97738
blockUntilIdle of a parent can't always be correctly implemented as
return ChildA.blockUntilIdle() && ChildB.blockUntilIdle()
The problem is that B can schedule work on A while we're waiting on it.
I believe this is theoretically possible today between CDB and background index.
Modules open more possibilities and it's hard to reason about all of them.
I don't have a perfect fix, and the abstraction is too good to lose. this patch:
- calls out why we block on workscheduler first, and asserts correctness
- documents the issue
- reduces the practical possibility of spuriously returning true significantly
This function is ultimately only for testing, so we're driving down flake rate.
Differential Revision: https://reviews.llvm.org/D96856
Kazu Hirata