Commit Graph

9 Commits

Author SHA1 Message Date
Sam McCall 7d1b499cae Revert "[clangd] Extract symbol-scope logic out of Quality, add tests. NFC"
On second thought, this can't properly be reused for highlighting.

Consider this example, which Quality wants to consider function-scope,
but highlighting must consider class-scope:

void foo() {
  class X {
    int ^y;
  };
}
2021-01-29 14:59:16 +01:00
Sam McCall d0817b5f18 [clangd] Extract symbol-scope logic out of Quality, add tests. NFC
This prepares for reuse from the semantic highlighting code.

There's a bit of yak-shaving here:
 - when the enum is moved into the clangd namespace, promote it to a
   scoped enum. This means teaching the decision forest infrastructure
   to deal with scoped enums.
 - AccessibleScope isn't quite the right name: e.g. public class members
   are treated as accessible, but still have class scope. So rename to
   SymbolScope.
 - Rename some QualitySignals members to avoid name conflicts.
   (the string) SymbolScope -> Scope
   (the enum) Scope -> ScopeKind
2021-01-29 14:44:28 +01:00
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
Sam McCall d3260bf5b2 [clangd] Errors in TestTU cause test failures unless suppressed with error-ok.
Summary:
The historic behavior of TestTU is to gather diagnostics and otherwise ignore
them. So if a test has a syntax error, and doesn't assert diagnostics, it
silently misbehaves.
This can be annoying when developing tests, as evidenced by various tests
gaining "assert no diagnostics" where that's not really the point of the test.

This patch aims to make that default behavior. For the first error
(not warning), TestTU will call ADD_FAILURE().

This can be suppressed with a comment containing "error-ok". For now that will
suppress any errors in the TU. We can make this stricter later -verify style.
(-verify itself is hard to reuse because of DiagnosticConsumer interfaces...)
A magic-comment was chosen over a TestTU option because of table-driven tests.

In addition to the behavior change, this patch:
  - adds //error-ok where we're knowingly testing invalid code
    (e.g. for diagnostics, crash-resilience, or token-level tests)
  - fixes a bunch of errors in the checked-in tests, mostly trivial (missing ;)
  - removes a bunch of now-redundant instances of "assert no diagnostics"

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73199
2020-01-24 11:16:27 +01:00
Kadir Cetinkaya b2eaac3e3e
[clangd] Replace shortenNamespace with getQualification
Reviewers: ilya-biryukov

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71652
2020-01-03 09:05:30 +01:00
Kadir Cetinkaya 97d6e8e0f3
[clangd] Helper for getting nested namespace qualification
Summary:
Introduce a new helper for getting minimally required qualifiers
necessary to spell a name at a point in a given DeclContext. Currently takes
using directives and nested namespecifier of DeclContext itself into account.

Initially will be used in define inline and outline actions.

Reviewers: ilya-biryukov

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D69608
2019-11-25 10:42:13 +01:00
Sam McCall 765b1250f6 [clangd] Untangle Hover from XRefs, move into own file.
Summary:
This is mostly mechanical, with a few exceptions:
 - getDeducedType moved into AST.h where it belongs. It now takes
   ASTContext instead of ParsedAST, and avoids using the preprocessor.
 - hover now uses SelectionTree directly rather than via
   getDeclAtPosition helper
 - hover on 'auto' used to find the decl that contained the 'auto' and
   use that to set Kind and documentation for the hover result.
   Now we use targetDecl() to find the decl matching the deduced type instead.
   This changes tests, e.g. 'variable' -> class for auto on lambdas.
   I think this is better, but the motivation was to avoid depending on
   the internals of DeducedTypeVisitor. This functionality is removed
   from the visitor.

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70357
2019-11-19 15:11:37 +01:00
Sam McCall 489cc589c5 [clangd] Add targetDecl(), which determines what declaration an AST node refers to.
Summary:
This is the first part of an effort to "unbundle" our libIndex use into separate
concerns (AST traversal, token<->node mapping, node<->decl mapping,
decl<->decl relationshipes).

Currently, clangd relies on libIndex to associate tokens, AST nodes, and decls.
This leads to rather convoluted implementations of e.g. hover and
extract-function, which are not naturally thought of as indexing applications.

The idea is that by decoupling different concerns, we make them easier
to use, test, and combine, and more efficient when only one part is needed.
There are some synergies between e.g. traversal and finding
relationships between decls, hopefully the benefits outweight these.

Reviewers: kadircet, ilya-biryukov

Subscribers: mgorny, MaskRay, jkorous, arphaman, jfb, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66751

llvm-svn: 370746
2019-09-03 11:35:50 +00:00
Sam McCall 9470142ca5 [clangd] Implementation of auto type expansion.
Add a tweak for clangd to replace an auto keyword to the deduced type.

This way a user can declare something with auto and then have the
IDE/clangd replace auto with whatever type clangd thinks it is. In case
of long/complext types this makes is reduces writing effort for the
user.

The functionality is similar to the hover over the auto keyword.

Example (from the header):

```
/// Before:
///    auto x = Something();
///    ^^^^
/// After:
///    MyClass x = Something();
///    ^^^^^^^
```

Patch by kuhnel! (Christian Kühnel)
Differential Revision: https://reviews.llvm.org/D62855

llvm-svn: 365792
2019-07-11 16:04:18 +00:00