796 Commits

Author SHA1 Message Date
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
Eric Liu
7129e63bcc [Tooling] Pull #include manipulation code from clangFormat into libToolingCore.
Summary: Also pull #include related style out of FormatStyle as tooling::IncludeStyle.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: klimek, mgorny, cfe-commits, djasper

Differential Revision: https://reviews.llvm.org/D46496

llvm-svn: 332287
2018-05-14 20:17:53 +00:00
Eric Liu
9d92c027e8 [clang-format] Move #include related style to libToolingCore
Summary: This will be shared by include insertion/deletion library.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: mgorny, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D46758

llvm-svn: 332284
2018-05-14 19:51:33 +00:00
Eric Liu
2e538089fa Add SourceManagerForFile helper which sets up SourceManager and dependencies for a single file with code snippet
Summary: This can be used to create a virtual environment (incl. VFS, source manager) for code snippets.

Reviewers: sammccall, klimek

Reviewed By: sammccall

Subscribers: klimek, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D46176

llvm-svn: 331923
2018-05-09 21:35:52 +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
Eric Liu
bf4c41c7e1 [clang-format] Refactor #include insertion/deletion functionality into a class.
Summary:
The class will be moved into libToolingCore as followup.

The new behaviors in this patch:
- New #include is inserted in the right position in a #include block to
preserver sorted #includes. This is best effort - only works when the
block is already sorted.
- When inserting multiple #includes to the end of a file which doesn't
end with a "\n" character, a "\n" will be prepended to each #include.
This is a special and rare case that was previously handled. This is now
relaxed to avoid complexity as it's rare in practice.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: klimek, cfe-commits, djasper

Differential Revision: https://reviews.llvm.org/D46180

llvm-svn: 331544
2018-05-04 17:55:13 +00:00
Krasimir Georgiev
5559cc3b75 [clang-format] Start formatting cpp code in raw strings in google style
Summary: This adds some delimiters to detect cpp code in raw strings.

Reviewers: klimek

Reviewed By: klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D46062

llvm-svn: 330832
2018-04-25 14:56:19 +00:00
Manuel Klimek
0dddcf78b8 Format closing braces when reformatting the line containing the opening brace.
This required a couple of yaks to be shaved:
1. MatchingOpeningBlockLineIndex was misused to also store the
   closing index; instead, use a second variable, as this doesn't
   work correctly for "} else {".
2. We needed to change the API of AffectedRangeManager to not
   use iterators; we always passed in begin / end for the whole
   container before, so there was no mismatch in generality.
3. We need an extra check to discontinue formatting at the top
   level, as we now sometimes change the indent of the closing
   brace, but want to bail out immediately afterwards, for
   example:
     void f() {
       if (a) {
     }
     void g();
   Previously:
     void f() {
       if (a) {
     }
     void g();
   Now:
     void f() {
       if (a) {
       }
     void g();

Differential Revision: https://reviews.llvm.org/D45726

llvm-svn: 330573
2018-04-23 09:34:26 +00:00
Ben Hamilton
b1a7919e4c [clang-format] Improve ObjC guessing heuristic by supporting all @keywords
Summary:
This diff improves the Objective-C guessing heuristic by
replacing the hard-coded list of a subset of Objective-C @keywords
with a general check which supports all @keywords.

I also added a few more Foundation keywords which were missing from
the heuristic.

Test Plan: Unit 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/D45521

llvm-svn: 329918
2018-04-12 15:11:53 +00:00
Ben Hamilton
ea7a27b847 [clang-format] Refine ObjC guesser to handle child lines of child lines
Summary:
This fixes an issue brought up by djasper@ in his review of D44790. We
handled top-level child lines, but if those child lines themselves
had child lines, we didn't handle them.

Rather than use recursion (which could blow out the stack), I use a
DenseSet to hold the set of lines we haven't yet checked (since order
doesn't matter), and update the set to add the children of each
line as we check it.

Test Plan: New tests added. Confirmed tests failed before fix
  and passed after fix.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44831

llvm-svn: 328628
2018-03-27 15:01:21 +00:00
Ben Hamilton
6432afe50c [clang-format] Fix ObjC style guesser to also iterate over child lines
Summary:
When I wrote `ObjCHeaderStyleGuesser`, I incorrectly assumed the
correct way to iterate over all tokens in `AnnotatedLine` was to
iterate over the linked list tokens starting with
`AnnotatedLine::First`.

However, `AnnotatedLine` also contains a vector
`AnnotedLine::Children` with child `AnnotedLine`s which have their own
tokens which we need to iterate over.

Because I didn't iterate over the tokens in the children lines, the
ObjC style guesser would fail on syntax like:

  #define FOO ({ NSString *s = ... })

as the statement(s) inside { ... } are child lines.

This fixes the bug and adds a test. I confirmed the test
failed before the fix, and passed after the fix.

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/D44790

llvm-svn: 328220
2018-03-22 17:37:19 +00:00
Ben Hamilton
19c782d520 [clang-format] Add a few more Core Graphics identifiers to ObjC heuristic
Summary:
We received reports of the Objective-C style guesser getting a false
negative on header files like:

CGSize SizeOfThing(MyThing thing);

This adds more Core Graphics identifiers to the Objective-C style
guesser.

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

Reviewers: jolesiak, djasper

Reviewed By: jolesiak, djasper

Subscribers: krasimir, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44632

llvm-svn: 328175
2018-03-22 03:25:22 +00:00
Benjamin Kramer
f76861c231 [format] Eliminate global destructors.
llvm-svn: 328047
2018-03-20 21:52:19 +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
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
Ben Hamilton
6e066350d8 [clang-format] Tidy up new API guessLanguage()
Summary:
This fixes a few issues djasper@ brought up in his review of D43522.

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

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43598

llvm-svn: 326205
2018-02-27 15:56:40 +00:00
Ben Hamilton
07e5836521 [clang-format] Fix regression when getStyle() called with empty filename
Summary:
D43522 caused an assertion failure when getStyle() was called with
an empty filename:

P8065

This adds a test to reproduce the failure and fixes the issue by
ensuring we never pass an empty filename to
Environment::CreateVirtualEnvironment().

Test Plan: New test added. Ran test with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests
  Before diff, test failed with P8065. Now, test passes.

Reviewers: vsapsai, jolesiak, krasimir

Reviewed By: vsapsai

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43590

llvm-svn: 325722
2018-02-21 21:27:27 +00:00
Ben Hamilton
3b345c3677 [clang-format] New API guessLanguage()
Summary:
For clients which don't have a filesystem, calling getStyle() doesn't
make much sense (there's no .clang-format files to search for).

In this diff, I hoist out the language-guessing logic from getStyle()
and move it into a new API guessLanguage().

I also added support for guessing the language of files which have no
extension (they could be C++ or ObjC).

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

Reviewers: jolesiak, krasimir

Reviewed By: jolesiak, krasimir

Subscribers: klimek, cfe-commits, sammccall

Differential Revision: https://reviews.llvm.org/D43522

llvm-svn: 325691
2018-02-21 15:54:31 +00:00
Krasimir Georgiev
2fac8d94a9 [clang-format] Enable google text proto formatting in R"proto('s
llvm-svn: 325336
2018-02-16 12:10:06 +00:00
Jacek Olesiak
ce4f0af302 [clang-format] Improve ObjC headers detection
Summary: Detect ObjC characteristic types when they start a line and add additional keywords.

Reviewers: benhamilton

Reviewed By: benhamilton

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43124

llvm-svn: 325221
2018-02-15 08:47:56 +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
Ben Hamilton
3a47fddfd3 [clang-format] Set ObjCBinPackProtocolList to Never for google style
Summary:
This is split off from D42650, and sets ObjCBinPackProtocolList
to Never for the google style.

Depends On D42650

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

Reviewers: krasimir, jolesiak, stephanemoore

Reviewed By: krasimir, jolesiak, stephanemoore

Subscribers: klimek, cfe-commits, hokein, Wizard

Differential Revision: https://reviews.llvm.org/D42708

llvm-svn: 324553
2018-02-08 01:49:10 +00:00
Ben Hamilton
4dc658ca52 [clang-format] New format param ObjCBinPackProtocolList
Summary:
This is an alternative approach to D42014 after some
investigation by stephanemoore@ and myself.

Previously, the format parameter `BinPackParameters` controlled both
C function parameter list bin-packing and Objective-C protocol conformance
list bin-packing.

We found in the Google style, some teams were changing
`BinPackParameters` from its default (`true`) to `false` so they could
lay out Objective-C protocol conformance list items one-per-line
instead of bin-packing them into as few lines as possible.

To allow teams to use one-per-line Objective-C protocol lists without
changing bin-packing for other areas like C function parameter lists,
this diff introduces a new LibFormat parameter
`ObjCBinPackProtocolList` to control the behavior just for ObjC
protocol conformance lists.

The new parameter is an enum which defaults to `Auto` to keep the
previous behavior (delegating to `BinPackParameters`).

Depends On D42649

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

Reviewers: jolesiak, stephanemoore, djasper

Reviewed By: stephanemoore

Subscribers: Wizard, hokein, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D42650

llvm-svn: 324131
2018-02-02 20:15:14 +00:00
Krasimir Georgiev
c209180828 [clang-format] Adds space around braces in text protos
Summary:
This patch modifies the text proto Google style to add spaces around braces.

I investigated using something different than Cpp11BracedListStyle, but it turns out it's what we want and also the java and js styles also depend on that.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42685

llvm-svn: 323860
2018-01-31 10:14:10 +00:00
Krasimir Georgiev
a83d3c576a [clang-format] Disable some text proto delimiters and functions for google style
Summary:
This disables some of the most commonly used text proto delimiters and functions
for google style until we resolve several style options for that style.
In particular, wheter there should be a space surrounding braces ``msg { sub { key : value } }``
and the extent of packing of submessages on a same line.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42651

llvm-svn: 323678
2018-01-29 19:28:05 +00:00
Krasimir Georgiev
eda222e7be [clang-format] Disable string literal breaking for text protos
Summary:
Commonly string literals in protos are already multiline, so breaking them
further is undesirable.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42373

llvm-svn: 323319
2018-01-24 11:18:39 +00:00
Krasimir Georgiev
412ed095f7 [clang-format] Adds a canonical delimiter to raw string formatting
Summary:
This patch adds canonical delimiter support to the raw string formatting.
This allows matching delimiters to be updated to the canonical one.

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42187

llvm-svn: 322956
2018-01-19 16:18:47 +00:00
Ben Hamilton
f84f118eb8 [ClangFormat] ObjCSpaceBeforeProtocolList should be true in the google style
Summary:
The Google style guide is neutral on whether there should be a
space before the protocol list in an Objective-C @interface or
@implementation.

The majority of Objective-C code in both Apple's public
header files and Google's open-source uses a space before
the protocol list, so this changes the google style to
default ObjCSpaceBeforeProtocolList to true.

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

Reviewers: krasimir, djasper, klimek

Reviewed By: krasimir

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D41074

llvm-svn: 322873
2018-01-18 18:37:16 +00:00
Krasimir Georgiev
8e21678d5b [clang-format] Replace unordered_set with an array
Summary: This replaces an unordered_set from r322690 with an array and binary search.

Reviewers: bkramer, benhamilton

Reviewed By: bkramer, benhamilton

Subscribers: jolesiak, benhamilton, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42189

llvm-svn: 322749
2018-01-17 20:01:02 +00:00
Ben Hamilton
e2e3e67cf1 [Format] Improve ObjC header guessing heuristic
Summary:
This improves upon the previous Objective-C header guessing heuristic
from rC320479.

Now, we run the lexer on C++ header files and look for Objective-C
keywords and syntax. We also look for Foundation types.

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

Reviewers: jolesiak, krasimir

Reviewed By: jolesiak

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42135

llvm-svn: 322690
2018-01-17 17:33:08 +00:00
Krasimir Georgiev
2537e22094 [clang-format] adds enclosing function detection to raw string formatting
Summary: This patch adds enclosing function detection to raw string formatting.

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D42167

llvm-svn: 322678
2018-01-17 16:17:26 +00:00
Krasimir Georgiev
4527f13a10 [clang-format] Reorganize RawStringFormat based on language
Summary:
This patch changes the structure for raw string formatting options by making it
language based (enumerate delimiters per language) as opposed to delimiter-based
(specify the language for a delimiter). The raw string formatting now uses an
appropriate style from the .clang-format file, if exists.

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D42098

llvm-svn: 322634
2018-01-17 12:24:59 +00:00
Krasimir Georgiev
54076fe17c [clang-format] Adds a FormatStyleSet
Summary:
This patch adds a FormatStyleSet for storing per-language FormatStyles for the
purposes of formatting code blocks inside the main code.

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: klimek, djasper, bkramer, cfe-commits

Differential Revision: https://reviews.llvm.org/D41487

llvm-svn: 322479
2018-01-15 12:06:16 +00:00
Ben Hamilton
5b0c3ad564 Revert "[ClangFormat] IndentWrappedFunctionNames should be true in the google ObjC style"
This reverts commit 37e69667f748e1458b46483b7c1b8f9ba33eec44.

We're going to discuss its ramifications further before making a
conclusion.

llvm-svn: 320747
2017-12-14 21:44:11 +00:00
Ben Hamilton
687e5fa936 [ClangFormat] IndentWrappedFunctionNames should be true in the google ObjC style
Summary:
If we write the following code, it goes over 100 columns, so we need to wrap it:

```
- (VeryLongReturnTypeName)veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
                              longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

Currently, clang-format with the google style aligns the method parameter names on the first column:

```
- (VeryLongReturnTypeName)
veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
    longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

We'd like clang-format in the google style to align these to column 4 for Objective-C:

```
- (VeryLongReturnTypeName)
    veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
            longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

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

Reviewers: krasimir, djasper, klimek

Reviewed By: djasper

Subscribers: cfe-commits, thakis

Differential Revision: https://reviews.llvm.org/D41195

llvm-svn: 320714
2017-12-14 16:17:38 +00:00
Richard Smith
c70f1d63f8 [c++20] P0515R3: Parsing support and basic AST construction for operator <=>.
Adding the new enumerator forced a bunch more changes into this patch than I
would have liked. The -Wtautological-compare warning was extended to properly
check the new comparison operator, clang-format needed updating because it uses
precedence levels as weights for determining where to break lines (and several
operators increased their precedence levels with this change), thread-safety
analysis needed changes to build its own IL properly for the new operator.

All "real" semantic checking for this operator has been deferred to a future
patch. For now, we use the relational comparison rules and arbitrarily give
the builtin form of the operator a return type of 'void'.

llvm-svn: 320707
2017-12-14 15:16:18 +00:00
Krasimir Georgiev
11ef531b5c [clang-format] Improve ObjC headers detection.
This patch improves detection of ObjC header files.
Right now many ObjC headers, especially short ones, are categorized as C/C++.

Way of filtering still isn't the best, as most likely it should be token-based.

Contributed by jolesiak!

llvm-svn: 320479
2017-12-12 13:43:59 +00:00
Aaron Ballman
c351fba69e Now that C++17 is official (https://www.iso.org/standard/68564.html), start changing the C++1z terminology over to C++17. NFC intended, these are all mechanical changes.
llvm-svn: 319688
2017-12-04 20:27:34 +00:00
Krasimir Georgiev
4c2c9c3620 [clang-format] Add option to group multiple #include blocks when sorting includes
Summary:
This patch allows grouping multiple #include blocks together and sort all includes as one big block.
Additionally, sorted includes can be regrouped after sorting based on configured categories.

Contributed by @KrzysztofKapusta!

Reviewers: krasimir

Reviewed By: krasimir

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D40288

llvm-svn: 319024
2017-11-27 13:23:45 +00:00
Krasimir Georgiev
6649665d5a [clang-format] Add text proto filename detection
Summary: Adds text proto filename detection.

Reviewers: klimek

Reviewed By: klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D40120

llvm-svn: 318525
2017-11-17 15:10:49 +00:00
Krasimir Georgiev
1696bb6523 [clang-format] Apply a clang-tidy suggestion, NFC
llvm-svn: 317793
2017-11-09 15:12:17 +00:00
NAKAMURA Takumi
057a942d9e clang/lib/Format/Format.cpp: Fix warnings introduced in rL316903. [-Wpedantic]
llvm-svn: 317075
2017-11-01 04:43:22 +00:00
Krasimir Georgiev
e56e9a4fef Keep MSVC2015 happy after r316903
llvm-svn: 316906
2017-10-30 14:30:14 +00:00
Krasimir Georgiev
9ad83fe7f6 [clang-format] Format raw string literals
Summary:
This patch adds raw string literal formatting.

Reviewers: djasper, klimek

Reviewed By: klimek

Subscribers: klimek, mgorny

Differential Revision: https://reviews.llvm.org/D35943

llvm-svn: 316903
2017-10-30 14:01:50 +00:00
Krasimir Georgiev
a84e78700f [clang-format] Add ext/ to google include categories
Summary: This adds an ext/ header include category for google style.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D38243

llvm-svn: 314211
2017-09-26 14:58:29 +00:00
Manuel Klimek
89628f6414 clang-format clang-format.
llvm-svn: 313744
2017-09-20 09:51:03 +00:00
Krasimir Georgiev
d6ce937f49 [clang-format] New flag - BraceWrapping.AfterExternBlock
Summary:
Bug: https://bugs.llvm.org/show_bug.cgi?id=34016 - **"extern C part"**

**Problem:**

Due to the lack of "brace wrapping extern" flag, clang format does parse the block after **extern** keyword moving the opening bracket to the header line always!

**Patch description:**

A new style added, new configuration flag - **BraceWrapping.AfterExternBlock** that allows us to decide whether we want a break before brace or not.

Reviewers: djasper, krasimir

Reviewed By: krasimir

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D37845

Contributed by @PriMee!

llvm-svn: 313354
2017-09-15 11:23:50 +00:00
Sylvestre Ledru
82c9a0ec12 SplitEmptyFunction should be true in the Mozilla coding style
Summary:
As defined here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Classes
See for the downstream bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=1399359

Reviewers: Typz, djasper

Reviewed By: Typz

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D37795

llvm-svn: 313182
2017-09-13 20:03:29 +00:00
Krasimir Georgiev
ad47c90767 clang-format: Add preprocessor directive indentation
Summary:
This is an implementation for [bug 17362](https://bugs.llvm.org/attachment.cgi?bugid=17362) which adds support for indenting preprocessor statements inside if/ifdef/endif. This takes previous work from fmauch (https://github.com/fmauch/clang/tree/preprocessor_indent) and makes it into a full feature.
The context of this patch is that I'm a VMware intern, and I implemented this because VMware needs the feature. As such, some decisions were made based on what VMware wants, and I would appreciate suggestions on expanding this if necessary to use-cases other people may want.

This adds a new enum config option, `IndentPPDirectives`. Values are:

* `PPDIS_None` (in config: `None`):
```
    #if FOO
    #if BAR
    #include <foo>
    #endif
    #endif
```
* `PPDIS_AfterHash` (in config: `AfterHash`):
```
    #if FOO
    #  if BAR
    #    include <foo>
    #  endif
    #endif
```
This is meant to work whether spaces or tabs are used for indentation. Preprocessor indentation is independent of indentation for non-preprocessor lines.

Preprocessor indentation also attempts to ignore include guards with the checks:
1. Include guards cover the entire file
2. Include guards don't have `#else`
3. Include guards begin with
```
#ifndef <var>
#define <var>
```

This patch allows `UnwrappedLineParser::PPBranchLevel` to be decremented to -1 (the initial value is -1) so the variable can be used for indent tracking.

Defects:
* This patch does not handle the case where there's code between the `#ifndef` and `#define` but all other conditions hold. This is because when the #define line is parsed, `UnwrappedLineParser::Lines` doesn't hold the previous code line yet, so we can't detect it. This is out of the scope of this patch.

* This patch does not handle cases where legitimate lines may be outside an include guard. Examples are `#pragma once` and `#pragma GCC diagnostic`, or anything else that does not change the meaning of the file if it's included multiple times.

* This does not detect when there is a single non-preprocessor line in front of an include-guard-like structure where other conditions hold because `ScopedLineState` hides the line.

* Preprocessor indentation throws off `TokenAnnotator::setCommentLineLevels` so the indentation of comments immediately before indented preprocessor lines is toggled on each run. Fixing this issue appears to be a major change and too much complexity for this patch.

Contributed by @euhlmann!

Reviewers: djasper, klimek, krasimir

Reviewed By: djasper, krasimir

Subscribers: krasimir, mzeren-vmw, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D35955

llvm-svn: 312125
2017-08-30 14:34:57 +00:00
Krasimir Georgiev
86873030ae [clang-format] Refactor likely xml a bit, NFC
llvm-svn: 312000
2017-08-29 13:57:31 +00:00