135 Commits

Author SHA1 Message Date
frayien
147bce7858
[clangd] textDocument/documentLink to support include statements with macro argument (#137550)
See issue https://github.com/clangd/clangd/issues/2375

The clangd textDocument/documentLink request does not support include
statements with macro argument and fails by returning an invalid range.

This PR adds support for macro argument by detecting what form of
include statement is currently being processed and returning a range
accordingly

First time contributing to LLVM, so if you have advice, questions or if
I messed up procedure please tell me !

---------

Co-authored-by: Adrien Garbani <garbani.adrien@frayien.fr>
2025-08-04 11:37:37 +02:00
Aleksandr Platonov
ca5040990e
[clangd] Collect references in array designators (#140356) 2025-06-13 18:32:42 +03:00
Christian Kandeler
a35f940b87
[clangd] Support operators new and delete in textDocument/references (#135620) 2025-04-22 10:42:56 +02:00
Nathan Ridge
fa0498fdae
[clang][HeuristicResolver] Apply default argument heuristic in resolveDeclRefExpr as well (#132576)
This is a follow-up to https://github.com/llvm/llvm-project/pull/131074.

After moving the default argument heuristic to `simplifyType` in that
patch, the heuristic no longer applied to the 
`DependentScopeDeclRefExpr` case, because that wasn't using
`simplifyType`.

This patch fixes that, with an added testcase.
2025-04-11 02:35:04 -04:00
Sirraide
b0210fee94
[Clang] [NFC] Fix more -Wreturn-type warnings in tests everywhere (#123470)
With the goal of eventually being able to make `-Wreturn-type` default to an 
error in all language modes, this is a follow-up to #123464 and updates even
more tests, mainly clang-tidy and clangd tests.
2025-02-20 19:49:37 +01:00
David Goldman
1841bcd5d1
[clangd] Update XRefs to support overridden ObjC methods (#127109)
- Support finding implementors of a protocol and discovering subclasses for ObjC interfaces via the implementations call
- Support jumping to the overridden method when you trigger goto definition on an override
- Properly find references to overridden methods
2025-02-19 13:21:41 -05:00
Nathan Ridge
9ccde12f5e
[clang] Compute accurate begin location for CallExpr with explicit object parameter (#117841)
The explicit object parameter is written before the callee expression,
so the begin location should come from the explicit object parameter.

Fixes https://github.com/llvm/llvm-project/issues/116335
2024-12-05 19:52:23 -05:00
Mital Ashok
482c41e992
[Clang] [Sema] Diagnose unknown std::initializer_list layout in SemaInit (#95580)
This checks if the layout of `std::initializer_list` is something Clang
can handle much earlier and deduplicates the checks in
CodeGen/CGExprAgg.cpp and AST/ExprConstant.cpp

Also now diagnose `union initializer_list` (Fixes #95495), bit-field for
the size (Fixes a crash that would happen during codegen if it were
unnamed), base classes (that wouldn't be initialized) and polymorphic
classes (whose vtable pointer wouldn't be initialized).
2024-06-20 19:44:06 +02:00
Utkarsh Saxena
5f1adf0433
[clangd] Fix crash with null check for Token at Loc (#94528)
Fixes https://github.com/llvm/llvm-project/issues/94599
2024-06-07 11:08:25 +02:00
Nathan Ridge
f0f53cb4bf [clangd] Do not ignore qualifier in heuristic resolution of dependent MemberExpr
Fixes https://github.com/llvm/llvm-project/issues/64841

Differential Revision: https://reviews.llvm.org/D158873
2023-08-25 16:54:29 -04:00
Christian Kandeler
535f34dd80 [index][clangd] Consider labels when indexing function bodies
It's valuable to have document highlights for labels and be able to find
references to them.

Reviewed By: nridge

Differential Revision: https://reviews.llvm.org/D150124
2023-08-01 09:07:05 +02:00
Sam McCall
d9d9a2cb2f [clangd] Use index for go-to-type
This ensures it finds the definition even if not visible.

Differential Revision: https://reviews.llvm.org/D155898
2023-07-21 23:10:33 +02:00
Viktoriia Bakalova
96e50797d6 [clangd] Fix the range for include reference to itself.
Differential Revision: https://reviews.llvm.org/D155215
2023-07-14 12:51:14 +00:00
Viktoriia Bakalova
9e9b1effac [clangd] Implement cross reference request for #include lines.
Differential Revision: https://reviews.llvm.org/D147044
2023-04-20 07:11:48 +00:00
Kazu Hirata
f71ffd3b73 [clang-tools-extra] Use std::optional instead of llvm::Optional (NFC)
This patch replaces (llvm::|)Optional< with std::optional<.  I'll post
a separate patch to clean up the "using" declarations, #include
"llvm/ADT/Optional.h", etc.

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
2023-01-07 20:19:42 -08:00
Kazu Hirata
71f557355d [clang-tools-extra] Add #include <optional> (NFC)
This patch adds #include <optional> to those files containing
llvm::Optional<...> or Optional<...>.

I'll post a separate patch to actually replace llvm::Optional with
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
2023-01-07 20:02:20 -08:00
Tom Praschan
d408c34d1f [clangd] Add extension for adding context (enclosing function or class) in references results
Relevant issue: https://github.com/clangd/clangd/issues/177

Reviewed By: nridge

Differential Revision: https://reviews.llvm.org/D137894
2023-01-01 15:25:18 +01:00
Fangrui Song
8310bec568 [clangd] Migrate uses of operator<<(raw_ostream &OS, const Optional<T> &O) to std::optional 2022-12-16 19:46:01 +00:00
Kazu Hirata
f7dffc28b3 Don't include None.h (NFC)
I've converted all known uses of None to std::nullopt, so we no longer
need to include None.h.

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
2022-12-10 11:24:26 -08:00
Kazu Hirata
649ef3386b [clang-tools-extra] Use std::nullopt instead of llvm::None (NFC)
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
2022-12-05 21:49:31 -08:00
Sam McCall
283b6dec8d [clangd] Make go-to-type work on member function calls 2022-09-26 04:18:43 +02:00
Denis Fatkulin
ee648c0ce0 [clang][index] Index unresolved member expression as reference
Unresolved member expressions aren't indexed as references.

Example code:

```
struct Foo {
  template <typename T> void bar(T t);
};
template <typename T> void test(Foo F, T t) {
  F.bar(t); // Not indexed
}
```

Reviewed By: hokein

Differential Revision: https://reviews.llvm.org/D131091
2022-08-19 19:02:42 +03:00
Gabriel Ravier
0ed2bd9311
[clang-tools-extra] Fixed a number of typos
I went over the output of the following mess of a command:

`(ulimit -m 2000000; ulimit -v 2000000; git ls-files -z | parallel --xargs -0 cat | aspell list --mode=none --ignore-case | grep -E '^[A-Za-z][a-z]*$' | sort | uniq -c | sort -n | grep -vE '.{25}' | aspell pipe -W3 | grep : | cut -d' ' -f2 | less)`

and proceeded to spend a few days looking at it to find probable typos
and fixed a few hundred of them in all of the llvm project (note, the
ones I found are not anywhere near all of them, but it seems like a
good start).

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D130826
2022-08-01 15:32:25 +02:00
David Goldman
88a2ac6ad6 [clangd] Improve XRefs support for ObjCMethodDecl
- Correct nameLocation to point to the first selector fragment instead
  of the - or +

- getDefinition now searches through the proper impl decls to find
  the definition of the ObjCMethodDecl if one exists

Differential Revision: https://reviews.llvm.org/D130095
2022-07-26 12:11:26 -04:00
Tom Praschan
cd85d9aeef Go-to-type on smart_ptr<Foo> now also shows Foo
Fixes clangd/clangd#1026

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D128826
2022-07-11 12:13:47 +02:00
Ilya Biryukov
2b833d4086 [AST] Improve traversal of concepts and concept requirements
- Do not traverse concept decl inside `AutoType`. We only traverse
  declaration and definitions, not references to a declaration.
- Do not visit implicit AST node the relevant traversal mode.
- Add traversal extension points for concept requirements.
- Renamed `TraverseConceptReference` to mark as helper to share
  the code. Having an extension point there seems confusing given that
  there are many concept refences in the AST that do not call the
  helper. Those are `AutoType`, `AutoTypeLoc` and constraint requirements.

Only clangd code requires an update.

There are no use-cases for concept requirement traversals yet, but
I added them in the earlier version of the patch and decided to keep
them for completeness.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D124532
2022-04-28 09:33:26 +00:00
Ilya Biryukov
75e16fd2c6 [Index] [clangd] Support for concept declarations and requires expressions
Add support for concepts and requires expression in the clang index.
Genarate USRs for concepts.

Also change how `RecursiveASTVisitor` handles return type requirement in
requires expressions. The new code unpacks the synthetic template parameter
list used for storing the actual expression. This simplifies
implementation of the indexing. No code seems to depend on the original
traversal anyway and the synthesized template parameter list is easily
accessible from inside the requires expression if needed.

Add tests in the clangd codebase.

Fixes https://github.com/clangd/clangd/issues/1103.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D124441
2022-04-26 13:50:01 +00:00
Sam McCall
4d006520b8 [clangd] Clean up unused includes. NFCI
Add includes where needed to fix build.
Haven't systematically added used headers, so there is still accidental
dependency on transitive includes.
2022-02-26 12:00:16 +01:00
Sam McCall
b9b6938183 [clangd] Treat 'auto' params as deduced if there's a single instantiation.
This makes hover/go-to-definition/expand-auto etc work for auto params in many
common cases.
This includes when a generic lambda is passed to a function accepting
std::function. (The tests don't use this case, it requires a lot of setup).

Note that this doesn't affect the AST of the function body itself, cause its
nodes not to be dependent, improve code completion etc.
(These sort of improvements seem possible, in a similar "if there's a single
instantiation, traverse it instead of the primary template" way).

Fixes https://github.com/clangd/clangd/issues/493
Fixes https://github.com/clangd/clangd/issues/1015

Differential Revision: https://reviews.llvm.org/D119537
2022-02-21 13:24:11 +01:00
Christian Kühnel
8edfc2f814 [clangd] Cleanup of readability-identifier-naming
Auto-generated patch based on clang-tidy readability-identifier-naming.
Only some manual cleanup for `extern "C"` declarations and a GTest change was required.

I'm not sure if this cleanup is actually very useful. It cleans up clang-tidy findings to the number of warnings from clang-tidy should be lower.  Since it was easy to do and required only little cleanup I thought I'd upload it for discussion.

One pattern that keeps recurring: Test **matchers** are also supposed to start with a lowercase letter as per LLVM convention. However GTest naming convention for matchers start with upper case. I would propose to keep stay consistent with the GTest convention there. However that would imply a lot of `//NOLINT` throughout these files.

To re-product this patch run:
```
run-clang-tidy -checks="-*,readability-identifier-naming" -fix -format ./clang-tools-extra/clangd
```

To convert the macro names, I was using this script with some manual cleanup afterwards:
https://gist.github.com/ChristianKuehnel/a01cc4362b07c58281554ab46235a077

Differential Revision: https://reviews.llvm.org/D115634
2022-02-01 13:31:52 +00:00
Sam McCall
71a082f726 [clangd] Implement textDocument/typeDefinition
This reuses the type=>decl mapping from go-to-definition on auto.
(Which could stand some improvement, but that can happen later).

Fixes https://github.com/clangd/clangd/issues/367

Differential Revision: https://reviews.llvm.org/D116443
2022-01-13 22:15:10 +01:00
Sam McCall
af27466c50 Reland "[AST] Add UsingType: a sugar type for types found via UsingDecl"
This reverts commit cc56c66f27e131b914082d3bd21180646e842e9a.
Fixed a bad assertion, the target of a UsingShadowDecl must not have
*local* qualifiers, but it can be a typedef whose underlying type is qualified.
2021-12-20 18:03:15 +01:00
Sam McCall
cc56c66f27 Revert "[AST] Add UsingType: a sugar type for types found via UsingDecl"
This reverts commit e1600db19d6303f84b995acb9340459694e06ea9.

Breaks sanitizer tests, at least on windows:
https://lab.llvm.org/buildbot/#/builders/127/builds/21592/steps/4/logs/stdio
2021-12-20 17:53:56 +01:00
Sam McCall
e1600db19d [AST] Add UsingType: a sugar type for types found via UsingDecl
Currently there's no way to find the UsingDecl that a typeloc found its
underlying type through. Compare to DeclRefExpr::getFoundDecl().

Design decisions:
- a sugar type, as there are many contexts this type of use may appear in
- UsingType is a leaf like TypedefType, the underlying type has no TypeLoc
- not unified with UnresolvedUsingType: a single name is appealing,
  but being sometimes-sugar is often fiddly.
- not unified with TypedefType: the UsingShadowDecl is not a TypedefNameDecl or
  even a TypeDecl, and users think of these differently.
- does not cover other rarer aliases like objc @compatibility_alias,
  in order to be have a concrete API that's easy to understand.
- implicitly desugared by the hasDeclaration ASTMatcher, to avoid
  breaking existing patterns and following the precedent of ElaboratedType.

Scope:
- This does not cover types associated with template names introduced by
  using declarations. A future patch should introduce a sugar TemplateName
  variant for this. (CTAD deduced types fall under this)
- There are enough AST matchers to fix the in-tree clang-tidy tests and
  probably any other matchers, though more may be useful later.

Caveats:
- This changes a fairly common pattern in the AST people may depend on matching.
  Previously, typeLoc(loc(recordType())) matched whether a struct was
  referred to by its original scope or introduced via using-decl.
  Now, the using-decl case is not matched, and needs a separate matcher.
  This is similar to the case of typedefs but nevertheless both adds
  complexity and breaks existing code.

Differential Revision: https://reviews.llvm.org/D114251
2021-12-20 17:15:38 +01:00
Adam Czachorowski
97fbc975fa [clangd] Find definition of ClassTemplate without going through index.
I noticed that, while go-to-def works on cases like:

namespace ns {
  template<typename T> struct Foo {};
}
using ::ns::Fo^o;

it only works because of the FileIndex. We can get definition location
directly from AST too.

Differential Revision: https://reviews.llvm.org/D113029
2021-11-04 15:25:21 +01:00
Kadir Cetinkaya
9ab9caf214
[clang] Visit enum base specifiers in libIndex
Fixes https://github.com/clangd/clangd/issues/878.

Differential Revision: https://reviews.llvm.org/D111260
2021-10-25 13:16:14 +02:00
Kadir Cetinkaya
4e4511df8d
[clang] Traverse enum base specifier in RAV 2021-10-25 13:16:14 +02:00
Utkarsh Saxena
6831c1d868 [clangd] Include refs of base method in refs for derived method.
Addresses https://github.com/clangd/clangd/issues/881

Includes refs of base class method in refs of derived class method.
Previously we reported base class method's refs only for decl of derived
class method. Ideally this should work for all usages of derived class method.

Related patch:
fbeff2ec2b.

Differential Revision: https://reviews.llvm.org/D111039
2021-10-05 17:39:49 +02:00
Kadir Cetinkaya
512aa84850
[clangd] Handle members of anon structs in SelectionTree
References to fields inside anon structs contain an implicit children
for the container, which has the same SourceLocation with the field.
This was resulting in SelectionTree always picking the anon-struct rather than
the field as the selection.

This patch prevents that by claiming the range for the field early.

https://github.com/clangd/clangd/issues/877.

Differential Revision: https://reviews.llvm.org/D110825
2021-10-01 12:38:18 +02:00
Christian Kandeler
eb209c13cc clangd: Do not report inline overrides twice
... in textDocument/references.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D110324
2021-09-23 16:09:13 +02:00
Sam McCall
bb41f85691 [clangd] Correct SelectionTree behavior around anonymous field access.
struct A { struct { int b; }; };
A().^b;

This should be considered a reference to b, but currently it's
considered a reference to the anonymous struct field.

Fixes https://github.com/clangd/clangd/issues/798

Differential Revision: https://reviews.llvm.org/D104376
2021-06-30 17:34:48 +02:00
Utkarsh Saxena
d7cb2305a1
[clangd] Add SymbolID to LocatedSymbol.
This is useful for running in batch mode.
Getting the SymbolID from via getSymbolInfo may give SymbolID
of a symbol different from that located by LocateSymbolAt (they
have different semantics of choosing the symbol.)

Differential Revision: https://reviews.llvm.org/D101388
2021-04-28 15:05:53 +02:00
Sam McCall
7d2fba8ddb [clangd] ObjC fixes for semantic highlighting and xref highlights
- highlight references to protocols in class/protocol/extension decls
- support multi-token selector highlights in semantic + xref highlights
  (method calls and declarations only)
- In `@interface I(C)`, I now references the interface and C the category
- highlight uses of interfaces as types
- added semantic highlightings of protocol names (as "interface") and
  category names (as "namespace").
  These are both standard kinds, maybe "extension" will be standardized...
- highlight `auto` as "class" when it resolves to an ObjC pointer
- don't highlight `self` as a variable even though the AST models it as one

Not fixed: uses of protocols in type names (needs some refactoring of
unrelated code first)

Differential Revision: https://reviews.llvm.org/D97617
2021-03-03 20:16:08 +01:00
Haojian Wu
6c47eafb39 [clang][index] report references from unreslovedLookupExpr.
Fix https://github.com/clangd/clangd/issues/675

Differential Revision: https://reviews.llvm.org/D96262
2021-02-11 11:08:26 +01:00
Sam McCall
bda5e57742 [clangd] Remove redundant -fno-delayed-template-parsing in tests. NFCI
We now (since a while) turn this off centrally in ParsedAST and CodeComplete.
2021-02-10 22:20:23 +01:00
Utkarsh Saxena
54afcade3b
[clangd] Report xref for base methods.
See: https://github.com/clangd/clangd/issues/668

```
struct A { virtual void foo() = 0; };
struct B : A { void foo() override; };
```

Find refs on `B::foo()` will show:
- decls of `A::foo()` (new)
- decls of `B::foo()`
- refs to `A::foo()` (new)
- refs to `B::foo()`.

Differential Revision: https://reviews.llvm.org/D95852
2021-02-03 12:07:43 +01:00
Utkarsh Saxena
fbeff2ec2b
[clangd] Report only decl of overridding method in xref.
See: https://github.com/clangd/clangd/issues/668

```
struct A { virtual void foo() = 0; };
struct B : A { void foo() override; };
```

Find refs on `A::foo()` will show:
- decls of `A::foo()`
- decls of `B::foo()`
- refs to `A::foo()`
- no refs to `B::foo()`.

Differential Revision: https://reviews.llvm.org/D95812
2021-02-02 13:06:20 +01:00
Sam McCall
8712df7a62 [clangd] references: decls of overrides of x are refs to x, not decls
This requires a second index query for refs to overrides, as the refs
call doesn't tell you which ref points at which symbol.

Differential Revision: https://reviews.llvm.org/D95451
2021-02-01 17:19:19 +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
Haojian Wu
42830f8bdc [clangd] Extend find-refs to include overrides.
find-references on `virtual void meth^od() = 0` will include override references.

Differential Revision: https://reviews.llvm.org/D94390
2021-01-20 13:23:20 +01:00