Commit Graph

938 Commits

Author SHA1 Message Date
Paul Hoad 375a84bb75 [clang-format] SpacesInSquareBrackets should affect lambdas with parameters too
Summary:
This patch makes the `SpacesInSquareBrackets` setting also apply to C++ lambdas with parameters.

Looking through the revision history, it appears support for only array brackets was added, and lambda brackets were ignored. Therefore, I am inclined to think it was simply an omission, rather than a deliberate choice.

See https://bugs.llvm.org/show_bug.cgi?id=17887 and https://reviews.llvm.org/D4944.

Reviewers: MyDeveloperDay, reuk, owenpan

Reviewed By: MyDeveloperDay

Subscribers: cfe-commits

Patch by: mitchell-stellar

Tags: #clang-format, #clang

Differential Revision: https://reviews.llvm.org/D68473

llvm-svn: 373821
2019-10-05 09:55:23 +00:00
Paul Hoad cccf5aa081 [clang-format] C++11 braced lists should respect the SpacesInParentheses setting
Summary:
According to the clang-format documentation, "Fundamentally, C++11 braced lists are formatted exactly like function calls would be formatted in their place. If the braced list follows a name (e.g. a type or variable name), clang-format formats as if the `{}` were the parentheses of a function call with that name."

This patch furthers the treatment of C++11 braced list braces as parentheses by respecting the `SpacesInParentheses` setting.

Reviewers: MyDeveloperDay, reuk, owenpan

Reviewed By: MyDeveloperDay

Subscribers: cfe-commits

Tags: #clang-format, #clang

Patch By: mitchell-stellar

Differential Revision: https://reviews.llvm.org/D68415

llvm-svn: 373751
2019-10-04 14:25:20 +00:00
Paul Hoad ba12cec21f [clang-format] [PR43531] clang-format damages "alternative representations" for operators
Summary:
https://bugs.llvm.org/show_bug.cgi?id=43531

Fix for clang-format incorrectly handles "alternative operators" as described by https://en.cppreference.com/w/cpp/language/operator_alternative

compl = ~
not = !

these are unary operators, and clang-format will remove the space between them and a numeric constant

this incorrectly formats the following code

```
int a compl 5;
int a not 5;
```

into:

```
int a compl5;
int a not5;
```

The code adds FIXME unit tests for "alternative token" representations for {} [] and # as defined by the same link, which would require a more detailed change to the FormatTokenLexer

Reviewers: klimek, reuk, owenpan, mitchell-stellar, STL_MSFT

Reviewed By: mitchell-stellar

Subscribers: cfe-commits

Tags: #clang-format, #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D68332

llvm-svn: 373750
2019-10-04 14:16:59 +00:00
Paul Hoad a37a6dcd04 [clang-format] [PR42417] clang-format inserts a space after '->' for operator->() overloading
Summary:
https://bugs.llvm.org/show_bug.cgi?id=42417

This revision removes the extra space between the opertor-> and the parens ()

```
class Bug {
    auto operator-> () -> int*;
    auto operator++(int) -> int;
};
```

Reviewers: klimek, owenpan, byoungyoung, mitchell-stellar

Reviewed By: mitchell-stellar

Subscribers: cfe-commits

Tags: #clang-format, #clang

Differential Revision: https://reviews.llvm.org/D68242

llvm-svn: 373746
2019-10-04 13:24:15 +00:00
Paul Hoad 4c05658354 [clang-format] [PR43338] C# clang format has space issues betweern C# only keywords
Summary:
When formatting C# there can be issues with a lack of spaces between `using (` , `foreach (` and generic types

The C# code

```
public class Foo
{
    Dictionary<string,string> foo;
}

```
will be formatted as

```
public class Foo
{
    Dictionary<string, string>foo;
                           ^^^^^   missing a space
}
```

This revision also reverts some of {D66662} in order to make this cleaner and resolve an issues seen by @owenpan that the formatting didn't add a space when not in a code block

This also transforms C# foreach commands to be seen as tok::kw_for commands (to ensure foreach gets the same Brace Wrapping behavior as for without littering the code with `if(Style.isCSharp())`

Reviewers: owenpan, klimek, russellmcc, mitchell-stellar

Reviewed By: mitchell-stellar

Subscribers: cfe-commits

Tags: #clang, #clang-format

Differential Revision: https://reviews.llvm.org/D67660

llvm-svn: 373709
2019-10-04 08:10:22 +00:00
Paul Hoad a2f963bb61 [clang-format] [PR43333] Fix C# breaking before function name when using Attributes
Summary:
This is  a fix for https://bugs.llvm.org/show_bug.cgi?id=43333

This comes with 3 main parts

  - C# attributes cause function names on a new line even when AlwaysBreakAfterReturnType is set to None
  - Add AlwaysBreakAfterReturnType  to None by default in the Microsoft style,
  - C# unit tests are not using Microsoft style (which we created to define the default C# style to match a vanilla C# project).

Reviewers: owenpan, klimek, russellmcc, mitchell-stellar

Reviewed By: mitchell-stellar

Subscribers: cfe-commits

Tags: #clang-tools-extra, #clang, #clang-format

Differential Revision: https://reviews.llvm.org/D67629

llvm-svn: 373707
2019-10-04 07:56:49 +00:00
Paul Hoad 83476b813e [clang-format] Reference qualifiers in member templates causing extra indentation.
Summary:
The following code

```
struct f {
  template <class T>
  void bar() && noexcept {}
};
```

will be formatted to the following with LLVM style, and
`AlwaysBreakTemplateDeclarations: Yes`

```
struct f {
  template <class T>
      void bar() && noexcept {}
};
```

The indentation of the `void bar()` line is wrong.

Reviewers: klimek, owenpan, krasimir, timwoj, MyDeveloperDay

Reviewed By: klimek, MyDeveloperDay

Subscribers: MyDeveloperDay, ilya-biryukov, llvm-commits, cfe-commits

Patch By: AndWass

Tags: #clang-format, #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68072

llvm-svn: 373165
2019-09-29 13:45:38 +00:00
Ilya Biryukov 4627bdedd9 Revert r373056: [clang-format] Reference qualifiers in member templates causing extra indentation
Reason: this breaks unit tests.
llvm-svn: 373059
2019-09-27 09:49:20 +00:00
Ilya Biryukov c5343e721b [clang-format] Reference qualifiers in member templates causing extra indentation
The following code

```
struct f {
  template <class T>
  void bar() && noexcept {}
};
```

will be formatted to the following with LLVM style, and
`AlwaysBreakTemplateDeclarations: Yes`

```
struct f {
  template <class T>
      void bar() && noexcept {}
};
```

The indentation of the `void bar()` line is wrong.

Patch by Andreas Wass (AndWass)!

Differential Revision: https://reviews.llvm.org/D68072

llvm-svn: 373056
2019-09-27 09:24:58 +00:00
Paul Hoad a767a0688b [clang-format][PR41899] PointerAlignment: Left leads to useless space in lambda intializer expression
Summary:
https://bugs.llvm.org/show_bug.cgi?id=41899

```auto lambda = [&a = a]() { a = 2; };```

is formatted as

```auto lambda = [& a = a]() { a = 2; };```

With an extra space if PointerAlignment is set to Left

> The space "& a" looks strange when there is no type in the lambda's intializer expression. This can be worked around with by setting "PointerAlignment: Right", but ideally "PointerAlignment: Left" would not add a space in this case.

Reviewers: klimek, owenpan, krasimir, timwoj

Reviewed By: klimek

Subscribers: cfe-commits

Tags: #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D67718

llvm-svn: 372249
2019-09-18 19:11:40 +00:00
Nico Weber 41f4d68a50 clang-format: Add support for formatting (some) lambdas with explicit template parameters.
This patch makes cases work where the lambda's template list doesn't
contain any of + - ! ~ / % << | || && ^ == != >= <= ? : true false
(see added FIXME).

Ports r359967 to clang-format.

Differential Revision: https://reviews.llvm.org/D67246

llvm-svn: 371854
2019-09-13 13:18:55 +00:00
Paul Hoad 719087bbb7 [clang-format] [PR43100] clang-format C# support does not add a space between "using" and paren
Summary:
Addresses https://bugs.llvm.org/show_bug.cgi?id=43100

Formatting using statement in C# with clang-format removes the space between using and paren even when SpaceBeforeParens is !

```
using(FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize : 1))
```

this change simply overcomes this for when using C# settings in the .clang-format file

```
using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize : 1))
```

All FormatTests pass..

```
[==========] 688 tests from 21 test cases ran. (88508 ms total)
[  PASSED  ] 688 tests.
```

Reviewers: djasper, klimek, owenpan

Reviewed By: owenpan

Subscribers: llvm-commits, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66662

llvm-svn: 371720
2019-09-12 10:18:53 +00:00
Martin Probst 5836472ac4 clang-format: [JS] handle `as const`.
Summary:
TypeScript 3.4 supports casting into a const type using `as const`:

    const x = {x: 1} as const;

Previously, clang-format would insert a space after the `const`. With
this patch, no space is inserted after the sequence `as const`.

Reviewers: krasimir

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66736

llvm-svn: 369916
2019-08-26 15:37:05 +00:00
Owen Pan 37860d524e [clang-format] Fix a bug that joins template closer and =
Also fixes the documentation for SpaceBeforeAssignmentOperators.

See discussions at https://reviews.llvm.org/D66332

Differential Revision: https://reviews.llvm.org/D66384

llvm-svn: 369214
2019-08-18 18:51:39 +00:00
Owen Pan ac67414618 [clang-format] Fix the bug that joins template closer and > or >>
Also fixes a buggy test case.

See PR42404

Differential Revision: https://reviews.llvm.org/D66332

llvm-svn: 369157
2019-08-16 21:49:17 +00:00
Owen Pan 10234da71d [clang-format] Expand AllowShortBlocksOnASingleLine for WebKit
See PR40840

Differential Revision: https://reviews.llvm.org/D66059

llvm-svn: 368539
2019-08-11 17:48:36 +00:00
Krasimir Georgiev 9ab051bdda [clang-format] fix crash involving invalid preprocessor line
Summary:
This (invalid) fragment is crashing clang-format:
```
#if 1
int x;
#elif
int y;
#endif
```

The reason being that the parser expects a token after `#elif`, and the
subsequent parsing of the next line does not check if `CurrentToken` is null.

Reviewers: gribozavr

Reviewed By: gribozavr

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65940

llvm-svn: 368280
2019-08-08 11:56:18 +00:00
Nico Weber 1361a4c2d8 clang-format: Support `if CONSTEXPR` if CONSTEXPR is a macro.
This is like r305666 (which added support for `if constexpr`) except
that it allows a macro name after the if.

This is slightly tricky for two reasons:

1. r305666 didn't add test coverage for all cases where it added a
   kw_constexpr, so I had to figure out what all the added cases were
   for. I now added tests for all `if constexpr` bits that didn't have
   tests. (This took a while, see e.g. https://reviews.llvm.org/D65223)

2. Parsing `if <ident> (` as an if means that `#if defined(` and
   `#if __has_include(` parse as ifs too. Add some special-case code
   to prevent this from happening where it's incorrect.

Fixes PR39248.

Differential Revision: https://reviews.llvm.org/D65227

llvm-svn: 367167
2019-07-27 02:41:40 +00:00
Fangrui Song 00e8ac3beb [Format] Make it easy to add new format::FormatStyle::LanguageStandard. NFCI
Preparatory change for D65043.

We current use `!=LS_Cpp03` to enable language standards 11,14,17, and
2a. `>=LS_Cpp11` is better if we decide to add new LanguageStandard in
the future.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D65183

llvm-svn: 366876
2019-07-24 08:04:29 +00:00
Ben Hamilton 86383e6626 [Format/ObjC] Avoid breaking between unary operators and operands
Summary:
Test Plan:
  New tests added. Ran tests with:
  % ninja FormatTests && ./tools/clang/unittests/Format/FormatTests
  Confirmed tests failed before change and passed after change.

Reviewers: krasimir, djasper, sammccall, klimek

Reviewed By: sammccall

Subscribers: klimek, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64775

llvm-svn: 366592
2019-07-19 16:50:24 +00:00
Ben Hamilton f4c2d57f76 [clang-format] Don't detect call to ObjC class method as C++11 attribute specifier
Summary:
Previously, clang-format detected something like the following as a C++11 attribute specifier.

  @[[NSArray class]]

instead of an array with an Objective-C method call inside. In general, when the attribute specifier checking runs, if it sees 2 identifiers in a row, it decides that the square brackets represent an Objective-C method call. However, here, `class` is tokenized as a keyword instead of an identifier, so this check fails.

To fix this, the attribute specifier first checks whether the first square bracket has an "@" before it. If it does, then that square bracket is not the start of a attribute specifier because it is an Objective-C array literal. (The assumption is that @[[.*]] is not valid C/C++.)

Contributed by rkgibson2.

Reviewers: benhamilton

Reviewed By: benhamilton

Subscribers: aaron.ballman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64632

llvm-svn: 366267
2019-07-16 21:29:40 +00:00
Francois Ferrand e8a301f87f clang-format: better handle namespace macros
Summary:
Other macros are used to declare namespaces, and should thus be handled
similarly. This is the case for crpcut's TESTSUITE macro, or for
unittest-cpp's SUITE macro:

      TESTSUITE(Foo) {
      TEST(MyFirstTest) {
        assert(0);
      }
      } // TESTSUITE(Foo)

This patch deals with this cases by introducing a new option to specify
lists of namespace macros. Internally, it re-uses the system already in
place for foreach and statement macros, to ensure there is no impact on
performance.

Reviewers: krasimir, djasper, klimek

Reviewed By: klimek

Subscribers: acoomans, cfe-commits, klimek

Tags: #clang

Differential Revision: https://reviews.llvm.org/D37813

llvm-svn: 362740
2019-06-06 20:06:23 +00:00
Francois Ferrand c5227a1f53 [clang-format] Allow configuring list of function-like macros that resolve to a type
Summary:
Adds a `TypenameMacros` configuration option that causes certain identifiers to be handled in a way similar to `typeof()`.

This is enough to:
- Prevent misinterpreting declarations of pointers to such types as expressions (`STACK_OF(int) * foo` -> `STACK_OF(int) *foo`),
- Avoid surprising line breaks in variable/struct field declarations (`STACK_OF(int)\nfoo;` -> `STACK_OF(int) foo;`, see https://bugs.llvm.org/show_bug.cgi?id=30353).

Reviewers: Typz, krasimir, djasper

Reviewed By: Typz

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57184

llvm-svn: 361986
2019-05-29 16:30:47 +00:00
Krasimir Georgiev 4dea1378ea Revert "Revert "[clang-format] Keep protobuf "package" statement on one line""
Summary:
Top-level "package" and "import" statements should generally be kept on
one line, for all languages.

----

This reverts commit rL356912.
The regression from rL356835 was fixed via rC358275.

Reviewers: krasimir, sammccall, MyDeveloperDay, xinz, dchai, klimek

Reviewed By: krasimir, xinz, dchai

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D60661

llvm-svn: 360411
2019-05-10 09:15:11 +00:00
Krasimir Georgiev 69150467b0 [clang-format] Use SpacesBeforeTrailingComments for "option" directive
Summary:
AnnotatingParser::next() is needed to implicitly set TT_BlockComment
versus TT_LineComment.  On most other paths through
AnnotatingParser::parseLine(), all tokens are consumed to achieve that.
This change updates one place where this wasn't done.

Contributed by @dchai!

Reviewers: krasimir

Reviewed By: krasimir

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D60541

llvm-svn: 358275
2019-04-12 10:11:34 +00:00
Reuben Thomas 91f60b4495 [clang-format] Optionally insert a space after unary ! operator
llvm-svn: 357908
2019-04-08 12:54:48 +00:00
Paul Hoad 1db96ac88b [clang-format] BreakAfterReturnType ignored on functions with numeric template parameters
Summary:
Addresses PR40696 - https://bugs.llvm.org/show_bug.cgi?id=40696

The BreakAfterReturnType didn't work if it had a single arguments which was a template with an integer template parameter

```
int  foo(A<8> a) { return a; }
```

When run with the Mozilla style. would not break after the `int`

```
int TestFn(A<8> a)
{
  return a;
}

```

This revision resolves this issue by allowing numeric constants to be considered function parameters if if seen inside `<>`

Reviewers: djasper, klimek, JonasToth, krasimir, reuk, alexfh

Reviewed By: klimek

Subscribers: cfe-commits, llvm-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D59309

llvm-svn: 357837
2019-04-06 10:13:04 +00:00
Reuben Thomas 08a940d629 [clang-format]: Add NonEmptyParentheses spacing option
This patch aims to add support for the following rules from the JUCE coding standards:

- Always put a space before an open parenthesis that contains text - e.g. foo (123);
- Never put a space before an empty pair of open/close parenthesis - e.g. foo();

Patch by Reuben Thomas

Differential Revision: https://reviews.llvm.org/D55170

llvm-svn: 357344
2019-03-30 12:32:35 +00:00
Ronald Wampler a83e2dbb1e [clang-format] Add style option AllowShortLambdasOnASingleLine
Summary:
This option `AllowShortLambdasOnASingleLine` similar to the other `AllowShort*` options, but applied to C++ lambdas.

Reviewers: djasper, klimek

Reviewed By: klimek

Subscribers: MyDeveloperDay, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57687

llvm-svn: 357027
2019-03-26 20:18:14 +00:00
Krasimir Georgiev fc67176eec [clang-format] Refine structured binding detection
Summary:
Revision r356575 had the unfortunate consequence that now clang-format never
detects an ObjC call expression after `&&`.

This patch tries harder to distinguish between C++17 structured bindings and
ObjC call expressions and adds a few regression tests.

Reviewers: klimek

Reviewed By: klimek

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59774

llvm-svn: 356928
2019-03-25 17:29:16 +00:00
Haojian Wu ae3fefe397 Revert "[clang-format] Keep protobuf "package" statement on one line"
This reverts commit r356835. This patch causes a regression, see the
test below:

verifyFormat("// Detached comment\n\n"
             "// Leading comment\n"
             "syntax = \"proto2\"; // trailing comment\n\n"
             "// in foo.bar package\n"
             "package foo.bar; // foo.bar package\n");

llvm-svn: 356912
2019-03-25 15:46:07 +00:00
Paul Hoad f5e52738fe [clang-format] Keep protobuf "package" statement on one line
Summary:
Top-level "package" and "import" statements should generally be kept on one
line, for all languages.

Reviewers: sammccall, krasimir, MyDeveloperDay

Reviewed By: MyDeveloperDay

Subscribers: MyDeveloperDay, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59627

Patch By: dchai (Donald Chai)

llvm-svn: 356835
2019-03-23 14:43:41 +00:00
Paul Hoad cbb726d0c5 [clang-format] Add basic support for formatting C# files
Summary:

This revision adds basic support for formatting C# files with clang-format, I know the barrier to entry is high here  so I'm sending this revision in to test the water as to whether this might be something we'd consider landing.

Tracking in Bugzilla as:
https://bugs.llvm.org/show_bug.cgi?id=40850

Justification:
C# code just looks ugly in comparison to the C++ code in our source tree which is clang-formatted.

I've struggled with Visual Studio reformatting to get a clean and consistent style, I want to format our C# code on saving like I do now for C++ and i want it to have the same style as defined in our .clang-format file, so it consistent as it can be with C++.  (Braces/Breaking/Spaces/Indent etc..)

Using clang format without this patch leaves the code in a bad state, sometimes when the BreakStringLiterals is set, it  fails to compile.

Mostly the C# is similar to Java, except instead of JavaAnnotations I try to reuse the TT_AttributeSquare.

Almost the most valuable portion is to have a new Language in order to partition the configuration for C# within a common .clang-format file, with the auto detection on the .cs extension. But there are other C# specific styles that could be added later if this is accepted. in particular how  `{ set;get }` is formatted.

Reviewers: djasper, klimek, krasimir, benhamilton, JonasToth

Reviewed By: klimek

Subscribers: llvm-commits, mgorny, jdoerfert, cfe-commits

Tags: #clang, #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D58404

llvm-svn: 356662
2019-03-21 13:09:22 +00:00
Paul Hoad 701a0d7e47 [clang-format] BeforeHash added to IndentPPDirectives
Summary:
The option BeforeHash added to IndentPPDirectives.
Fixes Bug 36019. https://bugs.llvm.org/show_bug.cgi?id=36019

Reviewers: djasper, klimek, krasimir, sammccall, mprobst, Nicola, MyDeveloperDay

Reviewed By: klimek, MyDeveloperDay

Subscribers: kadircet, MyDeveloperDay, mnussbaum, geleji, ufna, cfe-commits

Patch by to-mix.

Differential Revision: https://reviews.llvm.org/D52150

llvm-svn: 356613
2019-03-20 20:49:43 +00:00
Paul Hoad db19741970 [clang-format] structured binding in range for detected as Objective C
Summary:
Sometime after 6.0.0 and the current trunk 9.0.0 the following code would be considered as objective C and not C++

Reported by: https://twitter.com/mattgodbolt/status/1096188576503644160

$ clang-format.exe test.h
Configuration file(s) do(es) not support Objective-C: C:\clang\build\.clang-format

--- test.h --
```

std::vector<std::pair<std::string,std::string>> C;

void foo()
{
   for (auto && [A,B] : C)
   {
       std::string D = A + B;
   }
}
```
The following code fixes this issue of incorrect detection

Reviewers: djasper, klimek, JonasToth, reuk

Reviewed By: klimek

Subscribers: cfe-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D59546

llvm-svn: 356575
2019-03-20 17:10:23 +00:00
Martin Probst b274d3d799 [clang-format] [JS] Don't break between template string and tag
Before:
    const x = veryLongIdentifier
        `hello`;
After:
    const x =
        veryLongIdentifier`hello`;

While it's allowed to have the template string and tag identifier
separated by a line break, currently the clang-format output is not
stable when a break is forced. Additionally, disallowing a line break
makes it clear that the identifier is actually a tag for a template
string.

Patch originally by mitchellwills (thanks!).

llvm-svn: 356447
2019-03-19 11:15:52 +00:00
Paul Hoad 5bcf99b4bd [clang-format] [NFC] clang-format the Format library
Previously revisions commited non-clang-formatted changes to the Format library, this means submitting any revision e.g. {D55170} can cause additional whitespace changes to potentially be included in a revision.

Commit a non functional change using latest build Windows clang-format r351376 with no other changes, to remove these differences

All FormatTests
pass [==========] 652 tests from 20 test cases ran.

llvm-svn: 355182
2019-03-01 09:09:54 +00:00
Andrew Ng 301f304949 [clang-format] SpaceBeforeParens for lambda expressions
Add support for lambda expressions to the SpaceBeforeParens formatting
option.

Differential Revision: https://reviews.llvm.org/D58241

llvm-svn: 354880
2019-02-26 14:34:49 +00:00
Ben Hamilton 30b7d09d7a [Format/ObjC] Fix [foo bar]->baz formatting as lambda arrow
Summary:
Currently, `UnwrappedLineParser` thinks an arrow token after
an ObjC method expression is a C++ lambda arrow, so it formats:

```
[foo bar]->baz
```

as:

```
[foo bar] -> baz
```

Because `UnwrappedLineParser` runs before `TokenAnnotator`, it can't
know if the arrow token is after an ObjC method expression or not.

This diff makes `TokenAnnotator` remove the TT_LambdaArrow on
the arrow token if it follows an ObjC method expression.

Test Plan: New test added. Ran test with:
  % ninja FormatTests && ./tools/clang/unittests/Format/FormatTests
  Confirmed test failed before diff and passed after diff.

Reviewers: krasimir, djasper, sammccall

Reviewed By: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57923

llvm-svn: 353531
2019-02-08 15:55:18 +00:00
Krasimir Georgiev 20bef459fc [clang-format] Fix breaking of qualified operator
Summary:
From https://bugs.llvm.org/show_bug.cgi?id=40516
```
$ cat a.cpp
const NamespaceName::VeryLongClassName &NamespaceName::VeryLongClassName::myFunction() {
  // do stuff
}

const NamespaceName::VeryLongClassName &NamespaceName::VeryLongClassName::operator++() {
  // do stuff
}
$ ~/ll/build/opt/bin/clang-format -style=LLVM a.cpp
const NamespaceName::VeryLongClassName &
NamespaceName::VeryLongClassName::myFunction() {
  // do stuff
}

const NamespaceName::VeryLongClassName &NamespaceName::VeryLongClassName::
operator++() {
  // do stuff
}
```
What was happening is that the split penalty before `operator` was being set to
a smaller value by a prior if block. Moved checks around to fix this and added a
regression test.

Reviewers: djasper

Reviewed By: djasper

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57604

llvm-svn: 353033
2019-02-04 09:56:16 +00:00
Alex Lorenz 9d53cb8f83 [clang-format] square parens with one token are not Objective-C message sends
The commit r322690 introduced support for ObjC detection in header files.
Unfortunately some C headers that use designated initializers are now
incorrectly detected as Objective-C.
This commit fixes it by ensuring that `[ token ]` is not annotated as an
Objective-C message send.

rdar://45504376

Differential Revision: https://reviews.llvm.org/D56226

llvm-svn: 352125
2019-01-24 23:07:58 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Martin Probst 55b6d4b9f9 clang-format: [JS] support goog.requireType.
Summary:
It's a new primitive for importing symbols, and should be treated like
the (previously handled) `goog.require` and `goog.forwardDeclare`.

Reviewers: krasimir

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D56385

llvm-svn: 350516
2019-01-07 13:12:50 +00:00
Krasimir Georgiev 56904bf8a7 [clang-format] Do not treat asm clobber [ as ObjCExpr, refined
Summary:
r346756 refined clang-format to not treat the `[` in `asm (...: [] ..)` as an
ObjCExpr. However that's not enough, as we might have a comma-separated list of
such clobbers as in the newly added test.
This updates the detection to instead look at the Line's first token being `asm`
and not mark `[`-s as ObjCExprs in this case.

Reviewers: djasper, benhamilton

Reviewed By: djasper, benhamilton

Subscribers: benhamilton, cfe-commits

Differential Revision: https://reviews.llvm.org/D54795

llvm-svn: 347465
2018-11-22 14:49:55 +00:00
Krasimir Georgiev c1631019a8 [clang-format] JS: don't treat is: as a type matcher
Summary:
Clang-format is treating all occurences of `is` in js as type matchers. In some
cases this is wrong, as it might be a dict key.

Reviewers: mprobst

Reviewed By: mprobst

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D54753

llvm-svn: 347307
2018-11-20 14:22:43 +00:00
Krasimir Georgiev 28e2dbb14d [clang-format] Do not treat the asm clobber [ as ObjCExpr
Summary:
The opening square of an inline asm clobber was being annotated as an ObjCExpr.
This caused, amongst other things, the ObjCGuesser to guess header files
containing that pattern as ObjC files.

Reviewers: benhamilton

Reviewed By: benhamilton

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D54111

llvm-svn: 346756
2018-11-13 15:38:12 +00:00
Jordan Rupprecht 054dc28afa [clang-format] Support breaking consecutive string literals for TableGen
Summary:
clang-format can get confused by string literals in TableGen: it knows that strings can be broken up, but doesn't seem to understand how that can be indented across line breaks, and arranges them in a weird triangular pattern. Take this output example from `clang-format tools/llvm-objcopy/ObjcopyOpts.td` (which has now been formatted in rL345896 with this patch applied):

```
defm keep_global_symbols
: Eq<
      "keep-global-symbols", "Reads a list of symbols from <filename> and "
                             "runs as if " "--keep-global-symbol=<symbol> "
                                           "is set for each one. "
                                           "<filename> " "contains one "
                                                         "symbol per line "
                                                         "and may contain "
                                                         "comments "
                                                         "beginning " "with"
                                                                      " '#'"
                                                                      ". "
                                                                      "Lead"
                                                                      "ing "
```

Reviewers: alexshap, MaskRay, djasper

Reviewed By: MaskRay

Subscribers: krasimir, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D53952

llvm-svn: 346687
2018-11-12 18:15:04 +00:00
Yan Zhang e2d56dcc03 Fix ClangFormat issue of recognizing ObjC subscript as C++ attributes when message target is a result of a C-style method.
Summary:
The issue is that for array subscript like:

```
arr[[Foo() bar]];
```
ClangFormat will recognize it as C++11 attribute syntax and put a space between 'arr' and first '[', like:

```
arr [[Foo() bar]];
```

Now it is fixed. Tested with:
```
ninja FormatTests
```

Reviewers: benhamilton

Reviewed By: benhamilton

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D54288

llvm-svn: 346566
2018-11-09 23:19:14 +00:00
Krasimir Georgiev 5528cace04 [clang-format] tweaked another case of lambda formatting
Summary:
This is done in order to improve cases where the lambda's body is moved too far to the right. Consider the following snippet with column limit set to 79:

```
void f() {
  leader::MakeThisCallHere(&leader_service_,
                           cq_.get(),
                           [this, liveness](const leader::ReadRecordReq& req,
                                            std::function<void()> done) {
                             logger_->HandleReadRecord(
                                 req, resp, std::move(done));
                           });

  leader::MakeAnother(&leader_service_,
                      cq_.get(),
                      [this, liveness](const leader::ReadRecordReq& req,
                                       std::function<void()> done) {
                        logger_->HandleReadRecord(
                            req, resp, std::move(done), a);
                      });
}
```

The tool favors extra indentation for the lambda body and so the code incurs extra wrapping and adjacent calls are indented to a different level. I find this behavior annoying and I'd like the tool to favor new lines and, thus, use the extra width.

The fix, reduced, brings the following formatting.

Before:

    function(1,
             [] {
               DoStuff();
               //
             },
             1);

After:

    function(
        1,
        [] {
          DoStuff();
          //
        },
        1);

Refer to the new tests in FormatTest.cpp

Contributed by oleg.smolsky!

Reviewers: djasper, klimek, krasimir

Subscribers: cfe-commits, owenpan

Tags: #clang

Differential Revision: https://reviews.llvm.org/D52676

llvm-svn: 345753
2018-10-31 17:56:57 +00:00
Nico Weber 208661b206 clang-format: Don't insert spaces in front of :: for Java 8 Method References.
The existing code kept the space if it was there for identifiers, and it didn't
handle `this`. After this patch, for Java `this` is handled in addition to
identifiers, and existing space is always stripped between identifier and `::`.

Also accept `::` in addition to `.` in front of `<` in `foo::<T>bar` generic
calls.

Differential Revision: https://reviews.llvm.org/D52842

llvm-svn: 343872
2018-10-05 18:22:21 +00:00
Martin Probst 3315aed44a clang-format: [JS] conditional types.
Summary:
This change adds some rudimentary support for conditional types.
Specifically it avoids breaking before `extends` and `infer` keywords,
which are subject to Automatic Semicolon Insertion, so breaking before
them creates incorrect syntax.

The actual formatting of the type expression is odd, but there is as of
yet no clear idea on how to format these.

See https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-8.html#conditional-types.

Reviewers: krasimir

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52536

llvm-svn: 343179
2018-09-27 06:48:13 +00:00
Martin Probst cc525e7b8d clang-format: [JS] space after parameter naming.
Summary:
Previously:
    foo(/*bar=*/baz);

Now:
    foo(/*bar=*/ baz);

The run-in parameter naming comment is not intended in JS.

Reviewers: mboehme

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52535

llvm-svn: 343080
2018-09-26 08:28:33 +00:00
Jacek Olesiak 6b475b730b [clang-format/ObjC] Improve split priorities for ObjC methods
Reduce penalty for aligning ObjC method arguments using the colon alignment as
this is the canonical way.

Trying to fit a whole expression into one line should not force other line
breaks (e.g. when ObjC method expression is a part of other expression).

llvm-svn: 336520
2018-07-09 06:54:52 +00:00
Jacek Olesiak 27a5579f15 [clang-format/ObjC] Fix counting selector name parts for ObjC
Summary:
Counts selector parts also for method declarations and counts correctly for methods without arguments.
This is an internal change and doesn't influence formatting on its own (at the current state). Its lack would be visible after applying D48719.

Reviewers: benhamilton, klimek

Reviewed By: benhamilton

Subscribers: acoomans, cfe-commits

Differential Revision: https://reviews.llvm.org/D48716

llvm-svn: 336518
2018-07-09 05:58:51 +00:00
Ben Hamilton 3007b385fa [clang-format/ObjC] Fix NS_SWIFT_NAME(foo(bar:baz:)) after ObjC method decl
Summary:
In D44638, I partially fixed `NS_SWIFT_NAME(foo(bar:baz:))`-style
annotations on C functions, but didn't add a test for Objective-C
method declarations.

For ObjC method declarations which are annotated with `NS_SWIFT_NAME(...)`,
we currently fail to annotate the final component of the selector
name as `TT_SelectorName`.

Because the token type is left unknown, clang-format will happily
cause a compilation error when it changes the following:

```
@interface Foo
- (void)doStuffWithFoo:(id)name
                   bar:(id)bar
                   baz:(id)baz
    NS_SWIFT_NAME(doStuff(withFoo:bar:baz:));
@end
```

to:

```
@interface Foo
- (void)doStuffWithFoo:(id)name
                   bar:(id)bar
                   baz:(id)baz
    NS_SWIFT_NAME(doStuff(withFoo:bar:baz
:));
@end
```

(note the linebreak before the final `:`).

The logic which decides whether or not to annotate the token before a
`:` with `TT_SelectorName` is pretty fragile, and has to handle some
pretty odd cases like pair-parameters:

```
[I drawRectOn:surface ofSize:aa:bbb atOrigin:cc:dd];
```

So, to minimize the effect of this change, I decided to only annotate
unknown identifiers before a `:` as `TT_SelectorName` for Objective-C
declaration lines.

Test Plan: New tests included. Confirmed tests failed before change and
  passed after change. Ran tests with:
  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, krasimir, jolesiak

Reviewed By: krasimir

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D48679

llvm-svn: 335983
2018-06-29 15:26:37 +00:00
Krasimir Georgiev da5cca4f43 [clang-format] Keep @message together in text protos
Summary:
In C++ code snippets of the form `@field` are common. This makes clang-format
keep them together in text protos, whereas before it would break them.

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D48543

llvm-svn: 335459
2018-06-25 12:43:12 +00:00
Hans Wennborg bfc3406530 [clang-format] Add SpaceBeforeCpp11BracedList option.
WebKit C++ style for object initialization is as follows:

  Foo foo { bar };

Yet using clang-format -style=webkit changes this to:

  Foo foo{ bar };

As there is no existing combination of rules that will ensure a space
before a braced list in this fashion, this patch adds a new
SpaceBeforeCpp11BracedList rule.

Patch by Ross Kirsling!

Differential Revision: https://reviews.llvm.org/D46024

llvm-svn: 334692
2018-06-14 08:01:09 +00:00
Krasimir Georgiev 70a9e47f53 [clang-format] Discourage breaks in submessage entries, hard rule
Summary:
Currently clang-format allows this for text protos:
```
submessage:
    { key: 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' }
```
when it is under the column limit and when putting it all on one line exceeds the column limit.

This is not a very intuitive formatting, so I'd prefer having
```
submessage: {
  key: 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
}
```
instead, even if it takes one line more.

This patch prevents clang-format from inserting a break between `: {` and similar cases.

Reviewers: djasper, sammccall

Reviewed By: sammccall

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D48063

llvm-svn: 334517
2018-06-12 17:26:31 +00:00
Martin Probst c8b7a41a00 clang-format: [JS] strict prop init annotation.
Summary:
TypeScript uses the `!` token for strict property initialization
assertions, as in:

    class X {
      strictPropAsserted!: string;
    }

Previously, clang-format would wrap between the `!` and the `:` for
overly long lines. This patch fixes that by generally preventing the
wrap in that location.

Reviewers: krasimir

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D48030

llvm-svn: 334415
2018-06-11 16:20:13 +00:00
Francois Ferrand 6bb103f9fa clang-format: Introduce BreakInheritanceList option
Summary:
This option replaces the BreakBeforeInheritanceComma option with an
enum, thus introducing a mode where the colon stays on the same line as
constructor declaration:

  // When it fits on line:
  class A : public B, public C {
    ...
  };

  // When it does not fit:
  class A :
      public B,
      public C {
    ...
  };

This matches the behavior of the `BreakConstructorInitializers` option,
introduced in https://reviews.llvm.org/D32479.

Reviewers: djasper, klimek

Reviewed By: djasper

Subscribers: mzeren-vmw, cfe-commits

Differential Revision: https://reviews.llvm.org/D43015

llvm-svn: 334408
2018-06-11 14:41:26 +00:00
Krasimir Georgiev 8b98f5517f [clang-format] text protos: put entries on separate lines if there is a submessage
Summary:
This patch updates clang-format text protos to put entries of a submessage into separate lines if the submessage contains at least two entries and contains at least one submessage entry.

For example, the entries here are kept on separate lines even if putting them on a single line would be under the column limit:
```
message: {
  entry: 1
  submessage: { key: value }
}
```

Messages containing a single submessage or several scalar entries can still be put on one line if they fit:
```
message { submessage { key: value } }
message { x: 1 y: 2 z: 3 }
```

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D46757

llvm-svn: 334401
2018-06-11 12:53:25 +00:00
Martin Probst 7ebad4ea81 clang-format: [JS] do not wrap before any `is`.
Summary:
`is` type annotations can occur at any nesting level. For example:

    function x() {
      return function y(): a is B { ... };
    }

Breaking before the `is` above breaks TypeScript parsing the code. This
change prevents the wrap.

Reviewers: krasimir

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D47193

llvm-svn: 332968
2018-05-22 10:39:07 +00:00
Ben Hamilton 962b911af1 [clang-format/ObjC] Correctly annotate single-component ObjC method invocations
Summary:
Previously, clang-format's parser would fail to annotate the
selector in a single-component Objective-C method invocation with
`TT_SelectorName`. For example, the following:

  [foo bar];

would parse `bar` as `TT_Unknown`:

  M=0 C=1 T=Unknown S=0 B=0 BK=0 P=140 Name=identifier L=34 PPK=2
  FakeLParens= FakeRParens=0 II=0x559d5db51770 Text='bar'

This caused us to fail to insert a space after a closing cast rparen,
so the following:

  [((Foo *)foo) bar];

would format as:

  [((Foo *)foo)bar];

This diff fixes the issue by ensuring we annotate the selector
in a single-component Objective-C method invocation as
`TT_SelectorName`.

Test Plan: New tests added. Ran tests with:
  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak

Reviewed By: jolesiak

Subscribers: Wizard, klimek, hokein, cfe-commits

Differential Revision: https://reviews.llvm.org/D47028

llvm-svn: 332727
2018-05-18 15:27:02 +00:00
Francois Ferrand 58e6fe5b54 clang-format: Allow optimizer to break template declaration.
Summary:
Introduce `PenaltyBreakTemplateDeclaration` to control the penalty,
and change `AlwaysBreakTemplateDeclarations` to an enum with 3 modes:
* `No` for regular, penalty based, wrapping of template declaration
* `MultiLine` for always wrapping before multi-line declarations (e.g.
  same as legacy behavior when `AlwaysBreakTemplateDeclarations=false`)
* `Yes` for always wrapping (e.g. same as legacy behavior when
  `AlwaysBreakTemplateDeclarations=true`)

Reviewers: krasimir, djasper, klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D42684

llvm-svn: 332436
2018-05-16 08:25:03 +00:00
Francois Ferrand f92f806aa4 clang-format: tweak formatting of variable initialization blocks
Summary:
This patch changes the behavior of PenaltyBreakBeforeFirstCallParameter
so that is does not apply after a brace, when Cpp11BracedListStyle is
false.

This way, variable initialization is wrapped more like an initializer
than like a function call, which is more consistent with user
expectations for this braced list style.

With PenaltyBreakBeforeFirstCallParameter=200, this gives the following
code: (with Cpp11BracedListStyle=false)

Before :

  const std::unordered_map<std::string, int> Something::MyHashTable =
      { { "aaaaaaaaaaaaaaaaaaaaa", 0 },
        { "bbbbbbbbbbbbbbbbbbbbb", 1 },
        { "ccccccccccccccccccccc", 2 } };

After :

  const std::unordered_set<std::string> Something::MyUnorderedSet = {
    { "aaaaaaaaaaaaaaaaaaaaa", 0 },
    { "bbbbbbbbbbbbbbbbbbbbb", 1 },
    { "ccccccccccccccccccccc", 2 }
  };

Reviewers: krasimir, djasper, klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D43290

llvm-svn: 332434
2018-05-16 08:03:52 +00:00
Nicola Zaghen 3538b39ed5 [clang] Update uses of DEBUG macro to LLVM_DEBUG.
The DEBUG() macro is very generic so it might clash with other projects.
The renaming was done as follows:
- git grep -l 'DEBUG' | xargs sed -i 's/\bDEBUG\s\?(/LLVM_DEBUG(/g'
- git diff -U0 master | ../clang/tools/clang-format/clang-format-diff.py -i -p1 -style LLVM

Explicitly avoided changing the strings in the clang-format tests.

Differential Revision: https://reviews.llvm.org/D44975

llvm-svn: 332350
2018-05-15 13:30:56 +00:00
Adrian Prantl 9fc8faf9e6 Remove \brief commands from doxygen comments.
This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

for i in $(git grep -l '\@brief'); do perl -pi -e 's/\@brief //g' $i & done
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46320

llvm-svn: 331834
2018-05-09 01:00:01 +00:00
Ben Hamilton 345f8739d8 [clang-format/ObjC] Use getIdentifierInfo() instead of tok::identifier
Summary:
Previously, we checked tokens for `tok::identifier` to see if they
were identifiers inside an Objective-C selector.

However, this missed C++ keywords like `new` and `delete`.

To fix this, this diff uses `getIdentifierInfo()` to find
identifiers or keywords inside Objective-C selectors.

Test Plan: New tests added. Ran tests with:
  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D46143

llvm-svn: 331067
2018-04-27 18:51:12 +00:00
Krasimir Georgiev d6824876c2 Revert "[clang-format] Improve Incomplete detection for (text) protos"
This reverts commit r330016.
The incomplete detection has too many false positives, picking up typos
for hard failures and refusing to format anything in that case.

llvm-svn: 330569
2018-04-23 08:50:36 +00:00
Krasimir Georgiev f28347ea7d [clang-format] Improve Incomplete detection for (text) protos
Summary:
This patch improves detection of incomplete code for protos and text protos.
This is especially important for text protos in raw string literals, since they
might be partial strings concatenated, and we'd like to disable formatting in
these cases.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44203

llvm-svn: 330016
2018-04-13 13:37:09 +00:00
Ben Hamilton 01cbd5aa68 [clang-format] Do not break after ObjC category open paren
Summary:
Previously, `clang-format` would break Objective-C
category extensions after the opening parenthesis to avoid
breaking the protocol list:

```
% echo "@interface ccccccccccccc (ccccccccccc) <ccccccccccccc> { }" | \
  clang-format -assume-filename=foo.h -style="{BasedOnStyle: llvm, \
  ColumnLimit: 40}"
@interface ccccccccccccc (
    ccccccccccc) <ccccccccccccc> {
}
```

This looks fairly odd, as we could have kept the category extension
on the previous line.

Category extensions are a single item, so they are generally very
short compared to protocol lists. We should prefer breaking after the
opening `<` of the protocol list over breaking after the opening `(`
of the category extension.

With this diff, we now avoid breaking after the category extension's
open paren, which causes us to break after the protocol list's
open angle bracket:

```
% echo "@interface ccccccccccccc (ccccccccccc) <ccccccccccccc> { }" | \
  ./bin/clang-format -assume-filename=foo.h -style="{BasedOnStyle: llvm, \
  ColumnLimit: 40}"
@interface ccccccccccccc (ccccccccccc) <
    ccccccccccccc> {
}
```

Test Plan: New test added. Confirmed test failed before diff and
  passed after diff by running:
  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D45526

llvm-svn: 329919
2018-04-12 15:11:55 +00:00
Ben Hamilton df72e9851a [clang-format] Don't insert space between ObjC class and lightweight generic
Summary:
In D45185, I added clang-format parser support for Objective-C
generics. However, I didn't touch the whitespace logic, so they
got the same space logic as Objective-C protocol lists.

In every example in the Apple SDK and in the documentation,
there is no space between the class name and the opening `<`
for the lightweight generic specification, so this diff
removes the space and updates the tests.

Test Plan: Tests updated. Ran tests with:
  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D45498

llvm-svn: 329917
2018-04-12 15:11:51 +00:00
Ben Hamilton f90ad9cdac [clang-format] Ensure ObjC selectors with 0 args are annotated correctly
Summary:
Previously, clang-format would incorrectly annotate 0-argument
Objective-C selector names as TT_TrailingAnnotation:

```
% echo "-(void)foo;" > /tmp/test.m
% ./bin/clang-format -debug /tmp/test.m
Language: Objective-C
----
Line(0, FSC=0): minus[T=68, OC=0] l_paren[T=68, OC=1] void[T=68, OC=2]
r_paren[T=68, OC=6] identifier[T=68, OC=7] semi[T=68, OC=10]
Line(0, FSC=0): eof[T=68, OC=0]
Run 0...
AnnotatedTokens(L=0):
 M=0 C=0 T=ObjCMethodSpecifier S=1 B=0 BK=0 P=0 Name=minus L=1 PPK=2
 FakeLParens= FakeRParens=0 Text='-'
 M=0 C=1 T=Unknown S=1 B=0 BK=0 P=33 Name=l_paren L=3 PPK=2
 FakeLParens= FakeRParens=0 Text='('
 M=0 C=1 T=Unknown S=0 B=0 BK=0 P=140 Name=void L=7 PPK=2 FakeLParens=
 FakeRParens=0 Text='void'
 M=0 C=0 T=CastRParen S=0 B=0 BK=0 P=43 Name=r_paren L=8 PPK=2
 FakeLParens= FakeRParens=0 Text=')'
 M=0 C=1 T=TrailingAnnotation S=0 B=0 BK=0 P=120 Name=identifier L=11
 PPK=2 FakeLParens= FakeRParens=0 Text='foo'
 M=0 C=0 T=Unknown S=0 B=0 BK=0 P=23 Name=semi L=12 PPK=2 FakeLParens=
 FakeRParens=0 Text=';'
```

This caused us to incorrectly indent 0-argument wrapped selectors
when Style.IndentWrappedFunctionNames was false, as we thought
the 0-argument ObjC selector name was actually a trailing
annotation (which is always indented).

This diff fixes the issue and adds tests.

Test Plan: New tests added. Confirmed tests failed before diff.
  After diff, tests passed. Ran tests with:
  % make -j12 FormatTests &&
  ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak

Reviewed By: djasper, jolesiak

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44996

llvm-svn: 329297
2018-04-05 15:26:23 +00:00
Krasimir Georgiev 44e2e9f1c5 [clang-format] Preserve spaces before a percent in (text) protos
This makes sure that we do not change the meaning of pieces of text with
format specifiers.

llvm-svn: 329263
2018-04-05 09:33:03 +00:00
Ben Hamilton 9dc7816346 [clang-format/ObjC] Do not detect "[]" as ObjC method expression
Summary:
The following C++ code was being detected by
`guessLanguage()` as Objective-C:

  #define FOO(...) auto bar = [] __VA_ARGS__;

This was because `[] __VA_ARGS__` is not currently detected as a C++
lambda expression (it has no parens or braces), so
`TokenAnnotator::parseSquare()` incorrectly treats the opening square
as an ObjC method expression.

We have two options to fix this:

1. Parse `[] __VA_ARGS__` explicitly as a C++ lambda
2. Make it so `[]` is never parsed as an Objective-C method expression

This diff implements option 2, which causes the `[` to be parsed
as `TT_ArraySubscriptLSquare` instead of `TT_ObjCMethodExpr`.

Note that when I fixed this, it caused one change in formatting
behavior, where the following was implicitly relying on the `[`
being parsed as `TT_ObjCMethodExpr`:

  A<int * []> a;

becomes:

  A<int *[]> a;

with `Style.PointerAlignment = Middle`.

I don't really know what the desired format is for this syntax; the
test was added by Janusz Sobczak and integrated by @djasper in
b511fe9818
.

I went ahead and changed the test for now.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Fixes: https://bugs.llvm.org/show_bug.cgi?id=36248

Reviewers: djasper, jolesiak

Reviewed By: djasper

Subscribers: klimek, cfe-commits, djasper

Differential Revision: https://reviews.llvm.org/D45169

llvm-svn: 329070
2018-04-03 14:07:11 +00:00
Ben Hamilton 1915d2ac4f [clang-format/ObjC] Do not insert space after opening brace of ObjC dict literal
Summary:
D44816 attempted to fix a few cases where `clang-format` incorrectly
inserted a space before the closing brace of an Objective-C dictionary
literal.

This revealed there were still a few cases where we inserted a space
after the opening brace of an Objective-C dictionary literal.

This fixes the formatting to be consistent and adds more tests.

Test Plan: New tests added. Confirmed tests failed before
  diff and passed after diff.
  Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak, krasimir

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D45168

llvm-svn: 329069
2018-04-03 14:07:09 +00:00
Ben Hamilton d54e7aa9e2 [clang-format] Do not insert space before closing brace in ObjC dict literal
Summary:
Previously, `clang-format` would sometimes insert a space
before the closing brace in an Objective-C dictionary literal.

Unlike array literals (which obey `Style.SpacesInContainerLiterals`
to add a space after `[` and before `]`), Objective-C dictionary
literals currently are not meant to insert a space after `{` and before
`}`, regardless of `Style.SpacesInContainerLiterals`.

However, some constructs like `@{foo : @(bar)}` caused `clang-format`
to insert a space between `)` and `}`.

This fixes the issue and adds tests. (I understand the behavior is
not consistent between array literals and dictionary literals, but
that's existing behavior that's a much larger change.)

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak, Wizard

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44816

llvm-svn: 328627
2018-03-27 15:01:17 +00:00
Daniel Jasper fd327674dd clang-format: Narrow down raw string literal line break exception.
For multiline raw string literals, we generally want to respect the
author's choice of linebreak before the 'R"(' as the rest of the raw
string might be aligned to it and we cannot (commonly) modify the
content.

For single-line raw string literals, this doesn't make any sense and so
we should just treat them as regular string literals in this regard.

llvm-svn: 328201
2018-03-22 14:43:54 +00:00
Daniel Jasper d5e9ff4fe2 clang-format: Fix SpacesInParentheses with fully qualified names.
When SpacesInParentheses is set to true clang-format does not add a
space before fully qualified names. For example:

  do_something(::globalVar );

Fix by Darby Payne. Thank you!

llvm-svn: 328200
2018-03-22 14:30:28 +00:00
Ben Hamilton 5f91134344 [clang-format] Don't insert space between r_paren and 'new' in ObjC decl
Summary:
Previously, clang-format would insert a space between
the closing parenthesis and 'new' in the following valid Objective-C
declaration:

  + (instancetype)new;

This was because 'new' is treated as a keyword, not an identifier.

TokenAnnotator::spaceRequiredBefore() already handled the case where
r_paren came before an identifier, so this diff extends it to
handle r_paren before 'new'.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak, stephanemoore

Reviewed By: djasper, jolesiak, stephanemoore

Subscribers: stephanemoore, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44692

llvm-svn: 328174
2018-03-22 03:23:53 +00:00
Ben Hamilton ad991868c1 [clang-format] Fix ObjC selectors with multiple params passed to macro
Summary:
Objective-C selectors with arguments take the form of:

foo:
foo:bar:
foo:bar:baz:

These can be passed to a macro, like NS_SWIFT_NAME():

https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html

and must never have spaces inserted around the colons.

Previously, there was logic in TokenAnnotator's tok::colon parser to
handle the single-argument case, but it failed for the
multiple-argument cases.

This diff fixes the bug and adds more tests.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: jolesiak, djasper, Wizard

Reviewed By: jolesiak, Wizard

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44638

llvm-svn: 327986
2018-03-20 14:53:25 +00:00
Krasimir Georgiev abbd54ce00 [clang-format] Disallow breaks before ']' in text proto extensions
Summary: This disallows patterns like `[ext.name\n]` in text protos.

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44569

llvm-svn: 327716
2018-03-16 15:23:22 +00:00
Ben Hamilton 788a2227b7 [clang-format] Improve detection of Objective-C block types
Summary:
Previously, clang-format would detect the following as an
Objective-C block type:

  FOO(^);

when it actually must be a C or C++ macro dealing with an XOR
statement or an XOR operator overload.

According to the Clang Block Language Spec:

https://clang.llvm.org/docs/BlockLanguageSpec.html

block types are of the form:

  int (^)(char, float)

and block variables of block type are of the form:

  void (^blockReturningVoidWithVoidArgument)(void);
  int (^blockReturningIntWithIntAndCharArguments)(int, char);
  void (^arrayOfTenBlocksReturningVoidWithIntArgument[10])(int);

This tightens up the detection so we don't unnecessarily detect
C macros which pass in the XOR operator.

Depends On D43904

Test Plan: New tests added. Ran tests with:
  make -j12 FormatTests &&
  ./tools/clang/unittests/Format/FormatTests

Reviewers: krasimir, jolesiak, djasper

Reviewed By: djasper

Subscribers: djasper, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D43906

llvm-svn: 327285
2018-03-12 15:42:40 +00:00
Ben Hamilton b060ad870f [clang-format] Don't detect C++11 attribute specifiers as ObjC
Summary:
Previously, clang-format would detect C++11 and C++17 attribute
specifiers like the following as Objective-C method invocations:

  [[noreturn]];
  [[clang::fallthrough]];
  [[noreturn, deprecated("so sorry")]];
  [[using gsl: suppress("type")]];

To fix this, I ported part of the logic from
tools/clang/lib/Parse/ParseTentative.cpp into TokenAnnotator.cpp so we
can explicitly parse and identify C++11 attribute specifiers.

This allows the guessLanguage() and getStyle() APIs to correctly
guess files containing the C++11 attribute specifiers as C++,
not Objective-C.

Test Plan: New tests added. Ran tests with:
  make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: krasimir, jolesiak, djasper

Reviewed By: djasper

Subscribers: aaron.ballman, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D43902

llvm-svn: 327284
2018-03-12 15:42:38 +00:00
Daniel Jasper 9c95dfe658 clang-format: Properly handle implicit string concatenation in text protos
Three issues to fix:
- char_constants weren't properly treated as string literals
- Prevening the break after "label: " does not make sense in concunction
  with AlwaysBreakBeforeMultilineStrings. It leads to situations where
  clang-format just cannot find a viable format (it must break and yet
  it must not break).
- AlwaysBreakBeforeMultilineStrings should not be on for LK_TextProto in
  Google style.

llvm-svn: 327255
2018-03-12 10:32:18 +00:00
Krasimir Georgiev 9ad7af6423 [clang-format] Break consecutive string literals in text protos
Summary:
This patch fixes a bug where consecutive string literals in text protos were
put on the same line.

Reviewers: alexfh

Reviewed By: alexfh

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44204

llvm-svn: 326945
2018-03-07 21:30:38 +00:00
Ben Hamilton 1d6c6ee1cf [clang-format] Improve detection of ObjC for-in statements
Summary:
Previously, clang-format would detect the following as an
Objective-C for-in statement:

  for (int x = in.value(); ...) {}

because the logic only decided a for-loop was definitely *not*
an Objective-C for-in loop after it saw a semicolon or a colon.

To fix this, I delayed the decision of whether this was a for-in
statement until after we found the matching right-paren, at which
point we know if we've seen a semicolon or not.

Test Plan: New tests added. Ran tests with:
  make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: krasimir, jolesiak

Reviewed By: jolesiak

Subscribers: djasper, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D43904

llvm-svn: 326815
2018-03-06 17:21:42 +00:00
Krasimir Georgiev 446d6ec996 [clang-format] fix handling of consecutive unary operators
Summary:
Code that used to be formatted as `if (! + object) {` is now formatted as `if (!+object) {`
(we have a particular object in our codebase where unary `operator+` is overloaded to return the underlying value, which in this case is a `bool`)

We still preserve the TypeScript behavior where `!` is a trailing non-null operator. (This is already tested by an existing unit test in `FormatTestJS.cpp`)

It doesn't appear like handling of consecutive unary operators are tested in general, so I added another test for completeness

Patch contributed by @kevinl!

Reviewers: krasimir

Reviewed By: krasimir

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43312

llvm-svn: 326792
2018-03-06 13:56:28 +00:00
Francois Ferrand 2a9ea781f3 [clang-format] Add SpaceBeforeColon option
Summary:
When disabled, this option allows removing the space before colon,
making it act more like the semi-colon. When enabled (default), the
current behavior is not affected.

This mostly affects C++11 loop, initializer list, inheritance list and
container literals:

  class Foo: Bar {}
  Foo::Foo(): a(a) {}
  for (auto i: myList) {}
  f({a: 1, b: 2, c: 3});

Reviewers: krasimir, djasper

Reviewed By: djasper

Subscribers: xvallspl, teemperor, karies, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D32525

llvm-svn: 326426
2018-03-01 10:09:13 +00:00
Krasimir Georgiev 0aa4b4cb2e [clang-format] Format operator key in protos
Summary: This fixes a glitch where ``operator: value`` in a text proto would mess up the underlying formatting since it gets parsed as a kw_operator instead of an identifier.

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43830

llvm-svn: 326227
2018-02-27 19:07:47 +00:00
Krasimir Georgiev 9b2aa42f00 [clang-format] Fixup a case of text proto message attributes
Summary: This patch fixes a case where a proto message attribute is wrongly identified as an text proto extension.

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43465

llvm-svn: 325509
2018-02-19 15:31:25 +00:00
Martin Probst 110ecc7002 clang-format: [JS] fix `of` detection.
Summary:
`of` is only a keyword when after an identifier, but not when after
an actual keyword.

Before:
    return of (a, b, c);
After:
    return of(a, b, c);

Reviewers: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D43440

llvm-svn: 325489
2018-02-19 12:32:13 +00:00
Krasimir Georgiev b79987a95b [clang-format] Support repeated field lists in protos
Summary:
This patch adds support for list initialization of proto repeated fields:
```
keys: [1, 2, 3]
```

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43298

llvm-svn: 325252
2018-02-15 15:30:22 +00:00
Krasimir Georgiev 76064a4b1e [clang-format] Recognize percents as format specifiers in protos
Summary:
Frequently, a percent in protos denotes a formatting specifier for string replacement.
Thus it is desirable to keep the percent together with what follows after it.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43294

llvm-svn: 325159
2018-02-14 19:47:58 +00:00
Krasimir Georgiev 4e290648ae [clang-format] Support text proto extensions
Summary:
This adds support for text proto extensions, like:
```
msg {
  [type.type/ext] {
    key: value
  }
}
```

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43180

llvm-svn: 324995
2018-02-13 10:20:39 +00:00
Francois Ferrand 38d8013458 clang-format: keep ObjC colon alignment with short object name
Summary:
When the target object expression is short and the first selector name
is long, clang-format used to break the colon alignment:

  [I performSelectorOnMainThread:@selector(loadAccessories)
                       withObject:nil
                    waitUntilDone:false];

This happens because the colon is placed at `ContinuationIndent +
LongestObjCSelectorName`, so that any selector can be wrapped. This is
however not needed in case the longest selector is the firstone, and
not wrapped.

To overcome this, this patch does not include the first selector in
`LongestObjCSelectorName` computation (in TokenAnnotator), and lets
`ContinuationIndenter` decide how to account for the first selector
when wrapping. (Note this was already partly the case, see line 521
of ContinuationIndenter.cpp)

This way, the code gets properly aligned whenever possible without
breaking the continuation indent.

  [I performSelectorOnMainThread:@selector(loadAccessories)
                      withObject:nil
                   waitUntilDone:false];
  [I // force break
      performSelectorOnMainThread:@selector(loadAccessories)
                       withObject:nil
                    waitUntilDone:false];
  [I perform:@selector(loadAccessories)
      withSelectorOnMainThread:true
                 waitUntilDone:false];

Reviewers: krasimir, djasper, klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D43121

llvm-svn: 324741
2018-02-09 15:41:56 +00:00
Krasimir Georgiev 374e6de8e0 [clang-format] Do not break before long string literals in protos
Summary:
This patch is a follow-up to r323319 (which disables string literal breaking for
text protos) and it disables breaking before long string literals.

For example this:
```
keyyyyy: "long string literal"
```
used to get broken into:
```
keyyyyy:
    "long string literal"
```

While at it, I also enabled it for LK_Proto and fixed a bug in the mustBreak code.

Reviewers: djasper, sammccall

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42957

llvm-svn: 324591
2018-02-08 10:47:12 +00:00
Jacek Olesiak fb7f5c08b9 [clang-format] Fix ObjC message arguments formatting.
Summary:
Fixes formatting of ObjC message arguments when inline block is a first
argument.

Having inline block as a first argument when method has multiple parameters is
discouraged by Apple:
"It’s best practice to use only one block argument to a method. If the
method also needs other non-block arguments, the block should come last"
(https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/WorkingwithBlocks/WorkingwithBlocks.html#//apple_ref/doc/uid/TP40011210-CH8-SW7),
it should be correctly formatted nevertheless.

Current formatting:
```
[object blockArgument:^{
  a = 42;
}
    anotherArg:42];
```

Fixed (colon alignment):
```
[object
  blockArgument:^{
    a = 42;
  }
     anotherArg:42];
```

Test Plan: make -j12 FormatTests && tools/clang/unittests/Format/FormatTests

Reviewers: krasimir, benhamilton

Reviewed By: krasimir, benhamilton

Subscribers: benhamilton, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42493

llvm-svn: 324469
2018-02-07 10:35:08 +00:00
Krasimir Georgiev a79d62d2f5 [clang-format] Adds space around angle brackets in text protos
Summary:
This patch adds spaces around angle brackets in text proto Google style.
Previously these were detected as template openers and closers, which happened
to have the expected effect. Now we detect them as scope openers and closers
similarly to the way braces are handled in this context.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42727

llvm-svn: 324337
2018-02-06 11:34:34 +00:00
Mark Zeren d2b2ac6886 [clang-format] Align preprocessor comments with #
Summary:
r312125, which introduced preprocessor indentation, shipped with a known
issue where "indentation of comments immediately before indented
preprocessor lines is toggled on each run". For example these two forms
toggle:

  #ifndef HEADER_H
  #define HEADER_H
  #if 1
  // comment
  #   define A 0
  #endif
  #endif

  #ifndef HEADER_H
  #define HEADER_H
  #if 1
     // comment
  #   define A 0
  #endif
  #endif

This happens because we check vertical alignment against the '#' yet
indent to the level of the 'define'. This patch resolves this issue by
aligning against the '#'.

Reviewers: krasimir, klimek, djasper

Reviewed By: krasimir

Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D42408

llvm-svn: 323904
2018-01-31 20:05:50 +00:00