Commit Graph

80 Commits

Author SHA1 Message Date
David Goldman 2982bd9e9b [clangd] Use the active file's language for hover code blocks
This helps improve the syntax highlighting for Objective-C code,
although it currently doesn't work well in VS Code with
methods/properties/ivars since we don't currently include the proper
decl context (e.g. class).

Differential Revision: https://reviews.llvm.org/D108584
2021-09-03 11:38:27 -04:00
Christian Kandeler f9c8602b53 clangd: Provide hover info for include directives
It's quite useful to be able to hover over an #include and see the full
path to the header file.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D107137
2021-08-13 00:07:23 +02:00
Sam McCall 18f9e25ce1 [AST][clangd] Expose documentation of Attrs on hover.
This adds a method to Attr to get at the documentation programmatically.

Differential Revision: https://reviews.llvm.org/D107703
2021-08-12 21:16:37 +02:00
Sam McCall bb81e7083d [clangd] Add basic support for attributes (selection, hover)
These aren't terribly common, but we currently mishandle them badly.
Not only do we not recogize the attributes themselves, but we often end up
selecting some node other than the parent (because source ranges aren't accurate
in the presence of attributes).

Differential Revision: https://reviews.llvm.org/D89785
2021-08-06 22:49:14 +02:00
Sam McCall b447445eaa [clangd] Show padding following a field on field hover.
This displays as: `Size: 4 bytes (+4 padding)`

Also stop showing (byte) offset/size for bitfields. They're not
meaningful and using them to calculate padding is dangerous!

Differential Revision: https://reviews.llvm.org/D98377
2021-06-30 17:50:59 +02:00
Simon Pilgrim 61cdaf66fe [ADT] Remove APInt/APSInt toString() std::string variants
<string> is currently the highest impact header in a clang+llvm build:

https://commondatastorage.googleapis.com/chromium-browser-clang/llvm-include-analysis.html

One of the most common places this is being included is the APInt.h header, which needs it for an old toString() implementation that returns std::string - an inefficient method compared to the SmallString versions that it actually wraps.

This patch replaces these APInt/APSInt methods with a pair of llvm::toString() helpers inside StringExtras.h, adjusts users accordingly and removes the <string> from APInt.h - I was hoping that more of these users could be converted to use the SmallString methods, but it appears that most end up creating a std::string anyhow. I avoided trying to use the raw_ostream << operators as well as I didn't want to lose having the integer radix explicit in the code.

Differential Revision: https://reviews.llvm.org/D103888
2021-06-11 13:19:15 +01:00
Pratyush Das 99d63ccff0 Add type information to integral template argument if required.
Non-comprehensive list of cases:
 * Dumping template arguments;
 * Corresponding parameter contains a deduced type;
 * Template arguments are for a DeclRefExpr that hadMultipleCandidates()

Type information is added in the form of prefixes (u8, u, U, L),
suffixes (U, L, UL, LL, ULL) or explicit casts to printed integral template
argument, if MSVC codeview mode is disabled.

Differential revision: https://reviews.llvm.org/D77598
2021-05-12 19:00:08 +00:00
Kadir Cetinkaya f800ac8309
[clangd] Fix hover crash on broken code
Differential Revision: https://reviews.llvm.org/D101743
2021-05-04 11:42:31 +02:00
Sam McCall 289fee4ab7 [clangd] Show hex value of numeric constants
Don't show negative numbers
Don't show numbers <10 (hex is the same as decimal)
Show numeric enum values in hex too

Differential Revision: https://reviews.llvm.org/D97226
2021-03-02 16:33:02 +01:00
Nathan Ridge 9510b09402 [clangd] Factor out the heuristic resolver code into its own class
The patch also does some cleanup on the interface of the entry
points from TargetFinder into the heuristic resolution code.

Since the heuristic resolver is created in a place where the
ASTContext is available, it can store the ASTContext and the
NameFactory hack can be removed.

Differential revision: https://reviews.llvm.org/D92290
2021-02-16 04:10:52 -05:00
David Goldman 07c5a800dc Improve hover scopes for Objective-C code
- Instead of `AppDelegate::application:didFinishLaunchingWithOptions:` you
will now see `-[AppDelegate application:didFinishLaunchingWithOptions:]`

- Also include categories in the name when printing the scopes, e.g. `Class(Category)` and `-[Class(Category) method]`

Differential Revision: https://reviews.llvm.org/D68590
2021-02-12 10:27:32 -05:00
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
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
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
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
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
Richard Smith efeb65d53b Fix up clangd after Clang 038edf6029.
Now that Clang is able to constant-evaluate void-typed expressions,
disable showing hover-card values for them. It's not useful to say that
an expression cast to void has value '<no value>', even if we can
constant-evaluate it to that result!
2020-08-20 16:36:25 -07:00
Haojian Wu 015a0faa5e [clangd] Fix hover crash on InitListExpr.
Fixes https://github.com/clangd/clangd/issues/455

Differential Revision: https://reviews.llvm.org/D83546
2020-07-10 16:18:16 +02:00
Haojian Wu 254b016c65 [clangd] More complete fix for hover crashes on invalid record.
We should not call getFieldOffset on invalid record decls.

Differential Revision: https://reviews.llvm.org/D83189
2020-07-06 17:12:39 +02:00
Kadir Cetinkaya 50ba9f994c
[clangd] Fix hover crash on invalid decls
Summary: This also changes the way we display Size and Offset to be independent.

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83143
2020-07-03 22:51:04 +02:00
Adam Czachorowski 5c46fefdba
[clangd] Improve hover on arguments to function call
Summary:
In cases like:
  foo(a, ^b);
We now additionally show the name and type of the parameter to foo that
corresponds that "b" is passed as.

The name should help with understanding what it's used for and type can
be useful to find out if call to foo() can mutate variable "b" or not
(i.e. if it is pass by value, reference, const reference, etc).

Patch By: adamcz@ !

Reviewers: kadircet

Reviewed By: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D81169
2020-07-03 11:51:15 +02:00
Kadir Cetinkaya 117b9230a7
[clangd][Hover] Dont crash on null types
Reviewers: hokein, sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82701
2020-06-29 09:10:03 +02:00
Kadir Cetinkaya 6a3cffce3e
[clangd] Disable printing of Value for tag-types on hover
Summary: This is both confusing and crashy.

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82326
2020-06-24 17:32:19 +02:00
Eric Christopher f92011d875 As part of using inclusive language within the llvm project,
migrate away from the use of blacklist and whitelist.
2020-06-19 15:12:18 -07:00
Kadir Cetinkaya 538c2753f3
[clangd] locateMacroAt handles patched macros
Summary: Depends on D79992.

This patch changes locateMacroAt to perform #line directive substitution
for macro identifier locations.

We first check whether a location is inside a file included through
built-in header. If so we check whether line directive maps it back to
the main file, and afterwards use TokenBuffers to find exact location of
the identifier on the line.

Instead of performing the mapping in locateMacroAt, we could also store
a mapping inside the ParsedAST whenever we use a patched preamble. But
that would imply adding more responsibility to ParsedAST and paying for
the mapping even when it is not going to be used.

====

Go-To-Definition:

Later on these locations are used for serving go-to-definition requests,
this enables jumping to definition inside the preamble section in
presence of patched macros.

=====

Go-To-Refs:

Macro references in main file are collected separetely and stored as a
map from macro's symbol id to reference ranges. Those ranges are
computed inside PPCallbacks, hence we don't have access to TokenBuffer.

In presence of preamble patch, any reference to a macro inside the
preamble section will unfortunately have the wrong range. They'll point
into the patch rather than the main file. Hence during findReferences,
we won't get any ranges reported for those.

Fixing those requires:
- Lexing the preamble section to figure out "real range" of a patched
  macro definition
- Postponing range/location calculations until a later step in which we
  have access to tokenbuffers.

This patch trades some accuracy in favor of code complexity. We don't do
any patching for references inside the preamble patch but get any
reference inside the main file for free.

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D80198
2020-05-29 12:46:54 +02:00
Daniel Martín 6407aa9d2e
[clangd] Add access specifier information to hover contents
Summary:
For https://github.com/clangd/clangd/issues/382

This commit adds access specifier information to the hover
contents. For example, the hover information of a class field or
member function will now indicate if the field or member is private,
public, or protected. This can be particularly useful when a developer
is in the implementation file and wants to know if a particular member
definition is public or private.

Reviewers: kadircet

Reviewed By: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D80472
2020-05-27 19:36:46 +02:00
Haojian Wu fcf0764998 [AST] Fix an assertion violation in FieldDecl::getParent.
Summary:
FieldDecl::getParent assumes that the FiledDecl::getDeclContext returns a
RecordDecl, this is true for C/C++, but not for ObjCIvarDecl:

The Decls hierarchy is like following

FieldDecl <-- ObjCIvarDecl

DeclContext <-- ObjCContainerDecl <-- ObjCInterfaceDecl
         ^
         |----- TagDecl <-- RecordDecl

calling getParent() on ObjCIvarDecl will:
1. invoke getDeclContext(), which returns a DeclContext*, which points to an ObjCInterfaceDecl;
2. then downcast the "DeclContext" pointer to a RecordDecl*, and we will hit
the "is_a<RecordDecl>" assertion in llvm::cast (undefined behavior
in release build without assertion enabled);

Fixes https://github.com/clangd/clangd/issues/369

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: rsmith, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79627
2020-05-19 15:35:04 +02:00
Sam McCall fa1f4cf843 [clangd] Rename FormattedString -> Markup, move to support. NFC 2020-05-02 14:53:47 +02:00
Sam McCall ec170b7ccd [clangd] Fix whitespace between chunks in markdown paragraphs.
Summary:
Old model: chunks are always separated by one space.
           This makes it impossible to render "Foo `bar`." correctly.

New model: chunks are separated by space if the left had trailing space, or
           the right had leading space, or space was explicitly requested.
           (Only leading/trailing space in plaintext chunks count, not code)

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79139
2020-05-02 14:39:54 +02:00
Sam McCall 2cf93ef9fe [clangd] Render doc-comment code spans with `backticks` in plaintext mode
Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79142
2020-04-30 20:16:51 +02:00
Sam McCall a3a27a7aee [clangd] Render code complete documentation as plaintext/markdown.
Summary:
Structure is parsed from the raw comment using the existing heuristics used
for hover.

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79157
2020-04-30 19:00:49 +02:00
Sam McCall 30d17d8852 [clangd] Parse `foo` in documentation comments and render as code.
Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77456
2020-04-30 00:22:15 +02:00
Sam McCall ad97ccf6b2 [clangd] Move non-clang base pieces into separate support/ lib. NFCI
Summary:
This enforces layering, reduces a sprawling clangd/ directory, and makes life
easier for embedders.

Reviewers: kbobyrev

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79014
2020-04-29 15:57:12 +02:00
Sam McCall c1a00b89ad [clangd] show layout info when hovering on a class/field definition.
Summary:
This triggers only on the definition itself, not on references (probably too
noisy). Inspecting the definition seems like a decent hint for being interested
in layout.

Reviewers: kadircet

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77355
2020-04-08 13:41:51 +02:00
Kazuaki Ishizaki dd5571d51a [clang-tools-extra] NFC: Fix trivial typo in documents and comments
Differential Revision: https://reviews.llvm.org/D77458
2020-04-05 15:28:40 +09:00
Sam McCall ebd522aaa8 [clangd] Tweak parseDocumentation loop to use raw lines. NFC
This clears the way for the raw lines themselves to be parsed easily.

(Okay, one functional change: fix punctuation linebreaks with trailing WS)
2020-04-04 08:07:51 +02:00
Sam McCall a975fde23a [clang] Annotate trivial getters and setters on hover.
Summary: (Only if their definitions are visible and they have no other docs)

Reviewers: kadircet

Subscribers: jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77408
2020-04-04 07:15:12 +02:00
Karl-Johan Karlsson 7055cd42b5 Remove extra ';', NFC
Fixed gcc -Wpedantic warning about extra ';'
2020-03-26 11:23:59 +01:00
Lorenz Junglas b194e7d631 [clangd] Change line break behaviour for hoverinfo
`parseDocumentation` retains hard line breaks and removes soft line
breaks inside documentation comments.
Wether a line break is hard or soft is determined by the following rules
(some of which have been discussed in
https://github.com/clangd/clangd/issues/95):

Line breaks that are preceded by a punctuation are retained
Line breaks that are followed by "interesting characters" (e.g. Markdown
syntax, doxygen commands) are retained
All other line breaks are removed

Related issue: https://github.com/clangd/clangd/issues/95

Differential Revision: https://reviews.llvm.org/D76094
2020-03-24 12:41:08 +01:00
Kadir Cetinkaya 3755039c99
[clangd] Get rid of getTokenRange helper
Summary:

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75474
2020-03-03 14:30:42 +01:00
Kadir Cetinkaya 3ae2fc7a8b
[clangd] Get rid of lexer usage in locateMacroAt
Reviewers: sammccall, hokein

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75331
2020-03-02 13:31:12 +01:00
Kadir Cetinkaya 2bb7774ddf
[clangd] Get rid of getBeginningOfIdentifier helper
Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75176
2020-02-27 09:34:45 +01:00
Sam McCall be6d07c920 [clangd] Reapply b60896fad9 Fall back to selecting token-before-cursor if token-after-cursor fails.
This reverts commit b4b9706d5d.
Now avoiding expected<vector<selection>> in favor of expected<vector<unique_ptr<selection>>>
2020-02-23 20:17:30 +01:00
Sam McCall b4b9706d5d Revert "[clangd] Reapply b60896fad9 Fall back to selecting token-before-cursor if token-after-cursor fails."
This reverts commit a2ce807eb7.

Buildbot failures on GCC due to SelectionTree not being copyable, and
instantiating vector<Selection> in the tweak-handling in ClangdServer.
2020-02-23 16:34:49 +01:00
Sam McCall a2ce807eb7 [clangd] Reapply b60896fad9 Fall back to selecting token-before-cursor if token-after-cursor fails.
This reverts commit 6af1ad20d6.
2020-02-23 16:17:46 +01:00
Kadir Cetinkaya 84240e0db8
[clang][Index] Introduce a TemplateParm SymbolKind
Summary:
Currently template parameters has symbolkind `Unknown`. This patch
introduces a new kind `TemplateParm` for templatetemplate, templatetype and
nontypetemplate parameters.

Also adds tests in clangd hover feature.

Reviewers: sammccall

Subscribers: kristof.beyls, ilya-biryukov, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73696
2020-02-14 13:20:34 +01:00
Kadir Cetinkaya 9c903d0373
[clangd][Hover] Handle uninstantiated default args
Summary:
Default args might exist but be unparsed or uninstantiated.
getDefaultArg asserts on those. This patch makes sure we don't crash in such
scenarios.

Reviewers: sammccall, ilya-biryukov

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73723
2020-01-31 15:03:33 +01:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
Kadir Cetinkaya a31a61dafe
[clangd][Hover] Handle uninstantiated templates
Summary: Fixes https://github.com/clangd/clangd/issues/263

Reviewers: hokein, sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73344
2020-01-28 11:22:02 +01:00
Kadir Cetinkaya 1b996faa15
[clangd][Hover] Change arrow in return type back to →
Summary:
Currently 🡺 is used in hover response to represent return types, but it
is not widely available. Changing this back to original to support more clients.

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73336
2020-01-24 13:05:21 +01:00