Commit Graph

338 Commits

Author SHA1 Message Date
Manuel Klimek 45ab559ee7 Refactor ContinuationIndenter's breakProtrudingToken logic.
Create more orthogonal pieces. The restructuring made it easy to try out
several alternatives to D33589, and while none of the alternatives
turned out to be the right solution, the underlying simplification of
the structure is helpful.

Differential Revision: https://reviews.llvm.org/D39900

llvm-svn: 318141
2017-11-14 09:19:53 +00:00
Krasimir Georgiev 0fcb580bb1 [clang-format] Fix argument name comment, NFC
llvm-svn: 317783
2017-11-09 13:19:14 +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 35599fdfa0 [clang-format] Break non-trailing comments, try 2
Summary:
This patch enables `BreakableToken` to manage the formatting of non-trailing
block comments. It is a refinement of https://reviews.llvm.org/D37007.
We discovered that the optimizer outsmarts us on cases where breaking the comment
costs considerably less than breaking after the comment. This patch addresses
this by ensuring that a newline is inserted between a block comment and the next
token.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D37695

llvm-svn: 315893
2017-10-16 09:08:53 +00:00
Manuel Klimek 89628f6414 clang-format clang-format.
llvm-svn: 313744
2017-09-20 09:51:03 +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
Martin Probst c10d97f924 clang-format: [JS] simplify template string wrapping.
Summary:
Previously, clang-format would try to wrap template string substitutions
by indenting relative to the openening `${`. This helped with
indenting structured strings, such as strings containing HTML, as the
substitutions would be aligned according to the structure of the string.

However it turns out that the overwhelming majority of template string +
substitution usages are for substitutions into non-structured strings,
e.g. URLs or just plain messages. For these situations, clang-format
would often produce very ugly indents, in particular for strings
containing no line breaks:

    return `<a href='http://google3/${file}?l=${row}'>${file}</a>(${
                                                                    row
                                                                  },${
                                                                      col
                                                                    }): `;

This change makes clang-format indent template string substitutions as
if they were string concatenation operations. It wraps +4 on overlong
lines and keeps all operands on the same line:

    return `<a href='http://google3/${file}?l=${row}'>${file}</a>(${
        row},${col}): `;

While this breaks some lexical continuity between the `${` and `row}`
here, the overall effects are still a huge improvement, and users can
still manually break the string using `+` if desired.

Reviewers: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D37142

llvm-svn: 311988
2017-08-29 08:30:07 +00:00
Krasimir Georgiev c602af9a5e Revert "[clang-format] Break non-trailing block comments"
This reverts commit r311457. It reveals some dormant bugs in comment
reflowing, like breaking a single line jsdoc type annotation before a
parameter into multiple lines.

llvm-svn: 311641
2017-08-24 08:55:07 +00:00
Krasimir Georgiev fe268fc1c8 [clang-format] Break non-trailing block comments
Summary:
This patch is an alternative to https://reviews.llvm.org/D36614, by resolving a
non-idempotency issue by breaking non-trailing comments:

Consider formatting the following code with column limit at `V`:
```
                    V
const /* comment comment */ A = B;
```
The comment is not a trailing comment, breaking before it doesn't bring it under
the column limit. The formatter breaks after it, resulting in:

```
                    V
const /* comment comment */
    A = B;
```
For a next reformat, the formatter considers the comment as a trailing comment,
so it is free to break it further, resulting in:

```
                    V
const /* comment
         comment */
    A = B;
```
This patch improves the situation by directly producing the third case.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D37007

llvm-svn: 311457
2017-08-22 14:40:05 +00:00
Krasimir Georgiev 3b86534a63 [clang-format] Put '/**' and '*/' on own lines in jsdocs ending in comment pragmas
Summary:
This handles a case where the trailing '*/' of a multiline jsdoc eding in a
comment pragma wouldn't be put on a new line.

Reviewers: mprobst

Reviewed By: mprobst

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D36359

llvm-svn: 310458
2017-08-09 09:42:32 +00:00
Krasimir Georgiev ddb19248eb [clang-format] Fix indent of 'key <...>' and 'key {...}' in text protos
Summary:
This patch fixes the indentation of the code pattern `key <...>`and `key {...}` in text protos.
Previously, such line would be alinged depending on the column of the previous
colon, which usually indents too much.

I'm gonna go ahead and commit this since it's a straightforward bugfix.

Reviewers: djasper, klimek

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D36143

llvm-svn: 309941
2017-08-03 14:17:29 +00:00
Krasimir Georgiev 22d7e6b08d [clang-format] Put '/**' and '*/' on own lines in multiline jsdocs
Reviewers: mprobst

Reviewed By: mprobst

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D35683

llvm-svn: 308684
2017-07-20 22:29:39 +00:00
Krasimir Georgiev 26b144cc32 [clang-format] Support text proto messages
Summary: This patch adds support for textual protocol buffer messages.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek, mgorny

Differential Revision: https://reviews.llvm.org/D34441

llvm-svn: 307029
2017-07-03 15:05:14 +00:00
Francois Ferrand d2130f51a1 clang-format: Do not binpack initialization lists
Summary:
This patch tries to avoid binpacking when initializing lists/arrays, to allow things like:

  static int types[] = {
      registerType1(),
      registerType2(),
      registerType3(),
  };
  std::map<int, std::string> x = {
      { 0, "foo fjakfjaklf kljj" },
      { 1, "bar fjakfjaklf kljj" },
      { 2, "stuff fjakfjaklf kljj" },
  };

This is similar to how dictionnaries are formatted, and actually corresponds to the same conditions: when initializing a container (and not just 'calling' a constructor).

Such formatting involves 2 things:
* Line breaks around the content of the block. This can be forced by adding a comma or comment after the last element
* Elements should not be binpacked

This patch considers the block is an initializer list if it either ends with a comma, or follows an assignment, which seems to provide a sensible approximation.

Reviewers: krasimir, djasper

Reviewed By: djasper

Subscribers: malcolm.parsons, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D34238

llvm-svn: 306868
2017-06-30 20:00:02 +00:00
Krasimir Georgiev ff747be4d5 [clang-format] Support <>-style proto message fields
Summary:
This patch adds support for <>-style proto message fields inside proto options.
Previously these were wrongly treated as binary operators and as such were
working only by chance for a limited number of cases.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D34621

llvm-svn: 306406
2017-06-27 13:43:07 +00:00
Francois Ferrand 5f07f443be clang-format: Fix C99 designated initializers corner cases
Summary:
This fixes the missing space before the designated initializer when `Cpp11BracedListStyle=false` :

  const struct A a = { .a = 1, .b = 2 };
                      ^

Also, wrapping between opening brace and designated array initializers used to have an excessive penalty (like breaking between an expression and the subscript operator), leading to unexpected wrapping:

  const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa =
      {[1] = aaaaaaaaaaaaaaaaaaaaaaaaaaa,
       [2] = bbbbbbbbbbbbbbbbbbbbbbbbbbb};

instead of:

  const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {
      [1] = aaaaaaaaaaaaaaaaaaaaaaaaaaa,
      [2] = bbbbbbbbbbbbbbbbbbbbbbbbbbb};

Finally, designated array initializers are not binpacked, just like designated member initializers.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, krasimir, klimek

Differential Revision: https://reviews.llvm.org/D33491

llvm-svn: 305696
2017-06-19 14:41:21 +00:00
Daniel Jasper 6a7d5a7a22 clang-format: Handle "if constexpr".
c++1z adds the following constructions to the language:

  if constexpr (cond)
    statement1;
  else if constexpr (cond)
    statement2;
  else if constexpr (cond)
    statement3;
  else
    statement4;

A first version of this was proposed in reviews.llvm.org/D26953 by
Francis Visoiu Mistrih, but never commited. This patch additionally
fixes the behavior when allowing short if statements on a single line
and was authored by Jacob Bandes-Storch. Thank you to both authors.

llvm-svn: 305666
2017-06-19 07:40:49 +00:00
Martin Probst 384232766b clang-format: [JS] Correctly Indent Nested JavaScript Literals.
Nested literals are sometimes only indented by 2 spaces, instead of
respecting the IndentWidth option.
There are existing unit tests (FormatTestJS.ArrayLiterals) that only
pass because the style used to test them uses an IndentWidth of 2.
This change removes the magic 2 and always uses the IndentWidth.
I've added 6 tests. The first 4 of these tests fail before this change,
while the last 2 already pass, but were added just to make sure it the
change works with all types of braces.

Patch originally by Jared Neil, thanks!

Differential Revision: https://reviews.llvm.org/D33857

llvm-svn: 304791
2017-06-06 12:38:29 +00:00
Martin Probst b2f06eae8d clang-format: [JS] fix indenting bound functions.
Summary:
The previous fix to force build style wrapping if the previous token is a closing parenthesis broke a peculiar pattern where users parenthesize the function declaration in a bind call:
    fn((function() { ... }).bind(this));

This restores the previous behaviour by reverting that change, but narrowing the special case for unindenting closing parentheses to those followed by semicolons and opening braces, i.e. immediate calls and function declarations.

Reviewers: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D33640

llvm-svn: 304135
2017-05-29 07:50:52 +00:00
Francois Ferrand a6b6d51ba4 clang-format: Introduce BreakConstructorInitializers option
Summary:
This option replaces the BreakConstructorInitializersBeforeComma option with an enum, thus introducing a mode where the colon stays on the same line as constructor declaration:

  // When it fits on line:
  Constructor() : initializer1(), initializer2() {}

  // When it does not fit:
  Constructor() :
      initializer1(), initializer2()
  {}

  // When ConstructorInitializerAllOnOneLineOrOnePerLine = true:
  Constructor() :
      initializer1(),
      initializer2()
  {}

Reviewers: krasimir, djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D32479

llvm-svn: 303739
2017-05-24 11:36:58 +00:00
Martin Probst ab60acb698 clang-format: [JS] avoid line breaks before unindented r_parens.
The change that enabled wrapping at the previous scope's indentation had
unintended side-effects in that clang-format would prefer to wrap
closing parentheses to the next line if it avoided a wrap on the next
line (assuming very narrow lines):

    fooObject
        .someCall(barbazbam)
        .then(bam);

Would get formatted as:

    fooObject.someCall(barbazbam
    ).then(bam);

Because the ')' is now indented at the parent level (fooObject).

Normally formatting a builder pattern style call sequence like that is
outlawed in clang-format anyway. However for JavaScript this is special
cased to support trailing .bind calls.

This change disallows this special case when following a closing ')' to
avoid the problem.

Included are some random comment fixes.

Reviewers: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D33399

llvm-svn: 303557
2017-05-22 14:58:26 +00:00
Krasimir Georgiev a1c30937ce [clang-format] Handle trailing comment sections in import statement lines
Summary:
This patch updates the handling of multiline trailing comment sections in
import statement lines to make it more consistent with the case in general.
This includes updating the parsing logic to collect the trailing comment
sections and the formatting logic to not insert escaped newlines at the end of
comment lines in import statement lines.

Specifically, before this patch this code:
```
#include <a> // line 1
             // line 2
```
will be turned into two unwrapped lines, whereas this code:
```
int i; // line 1
       // line 2
```
is turned into a single unwrapped line, enabling reflowing across comments.

An example where the old behaviour is bad is when partially formatting the lines
3 to 4 of this code:
```
#include <a> // line 1
             // line 2

int i;
```
which gets turned into:
```
#include <a> // line 1
             // line 2

             int i;
```
because the two comment lines were independent and the indent was copied.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D33351

llvm-svn: 303415
2017-05-19 10:34:57 +00:00
Martin Probst 2c1cdae2df JavaScript allows parameter lists to include trailing commas:
myFunction(param1, param2,);

For symmetry with other parenthesized lists ([...], {...}), clang-format should
wrap parenthesized lists one-per-line if they contain a trailing comma:

    myFunction(
        param1,
        param2,
    );

This is particularly useful in function declarations or calls with many
arguments, e.g. commonly in constructors.

Differential Revision: https://reviews.llvm.org/D33023

llvm-svn: 303049
2017-05-15 11:15:29 +00:00
Daniel Jasper 988e7e4fe8 [clang-format] Don’t propagate AvoidBinPacking into argument
subexpressions

This is an attempt to fix the issue described in a recent email:
http://lists.llvm.org/pipermail/cfe-dev/2017-April/053632.html

Patch by jtbandes. Thank you!
Review: https://reviews.llvm.org/D32475

llvm-svn: 302427
2017-05-08 15:07:52 +00:00
Daniel Jasper cab4617132 clang-format: Fix bad corner case in formatting of function types.
Before:
  std::function<
      LoooooooooooongTemplatedType<SomeType>*(
          LooooooooooooooooooooongType
              type)>
      function;

After:
  std::function<
      LoooooooooooongTemplatedType<
          SomeType>*(
          LooooooooooooooooongType type)>
      function;

clang-format generally avoids having lines like "SomeType>*(" as they
lead to parameter lists that don't belong together to be aligned. However, in
case it is better than the alternative, which can even be violating the column
limit.

llvm-svn: 301182
2017-04-24 14:28:49 +00:00
Alexander Kornienko d4fa2e6348 [clang-format] Handle NSString literals by merging tokens.
Summary:
This fixes a few outstanding bugs:
  * incorrect breaking of NSString literals containing double-width characters;
  * inconsistent formatting of ObjC dictionary literals containing NSString
    literals;
  * AlwaysBreakBeforeMultilineStrings ignoring implicitly-concatenated NSString
    literals.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D31706

llvm-svn: 299927
2017-04-11 09:55:00 +00:00
Daniel Jasper 1dbc2105dc clang-format: Fix post-commit review comment of r299204, use Style.isCpp().
Also, while at it, s/IsCpp/isCpp/ so that it follows LLVM style.

llvm-svn: 299214
2017-03-31 13:30:24 +00:00
Daniel Jasper 04bbda9923 clang-format: Fix bug in wrapping behavior of operators.
Before (even violating the column limit):
  auto Diag =
      diag()
      << aaaaaaaaaaaaaaaa(aaaaaaaaaaaa, aaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  auto Diag = diag() << aaaaaaaaaaaaaaaa(aaaaaaaaaaaa, aaaaaaaaaaaaa,
                                         aaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 297931
2017-03-16 07:54:11 +00:00
Andi-Bogdan Postelnicu 0ef8ee19f8 [clang-format] Add option to break before inheritance separation operator in class declaration.
Differential Revision: https://reviews.llvm.org/D30487

llvm-svn: 297467
2017-03-10 15:10:37 +00:00
Krasimir Georgiev bc05ebaa5a [clang-format] Look at NoLineBreak and NoLineBreakInOperand before breakProtrudingToken
Summary:
This patch makes ContinuationIndenter call breakProtrudingToken only if
NoLineBreak and NoLineBreakInOperand is false.

Previously, clang-format required two runs to converge on the following example with 24 columns:
Note that the second operand shouldn't be splitted according to NoLineBreakInOperand, but the
token breaker doesn't take that into account:
```
func(a, "long long long long", c);
```
After first run:
```
func(a, "long long "
        "long long",
         c);
```
After second run, where NoLineBreakInOperand is taken into account:
```
func(a,
     "long long "
     "long long",
     c);
```

With the patch, clang-format now obtains in one run:
```
func(a,
     "long long long"
     "long",
     c);
```
which is a better token split overall.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D30575

llvm-svn: 297274
2017-03-08 12:54:50 +00:00
Krasimir Georgiev 17725d8391 [clang-format] Enable comment reflowing in multiline comments containing pragmas
Summary:
This patch enables comment reflowing of lines not matching the comment pragma regex
in multiline comments containing comment pragma lines. Previously, these comments
were dumped without being reindented to the result.

Reviewers: djasper, mprobst

Reviewed By: mprobst

Subscribers: klimek, mprobst, cfe-commits

Differential Revision: https://reviews.llvm.org/D30697

llvm-svn: 297261
2017-03-08 08:55:12 +00:00
Nico Weber d96ae86735 clang-format: Fix many Objective-C formatting regressions from r289428
r289428 added a separate language kind for Objective-C, but kept many
"Language == LK_Cpp" checks untouched.  This introduced a "IsCpp()"
method that returns true for both C++ and Objective-C++, and replaces
all comparisons of Language with LK_Cpp with calls to this new method.

Also add a lot more test coverge for formatting things in LK_ObjC mode,
by having FormatTest's verifyFormat() test for LK_ObjC everything that's
being tested for LK_Cpp at the moment.

Fixes PR32060 and many other things.

llvm-svn: 296160
2017-02-24 19:10:12 +00:00
Daniel Jasper 98e0b12d13 clang-format: [JS] Improve line-wrapping behavior of template strings.
Specifically, similar to other blocks, clang-format now wraps both
after "${" and before the corresponding "}", if the contained
expression spans multiple lines.

llvm-svn: 295663
2017-02-20 14:51:16 +00:00
Daniel Jasper d9b319e3e3 clang-format: Prevent weird line-wraps in complex lambda introducers
Before:
  aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
      [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]() -> ::std::
	  unordered_set<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {
	    //
	  });

After:
  aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
      [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]()
	  -> ::std::unordered_set<
	      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {
	//
      });

llvm-svn: 295659
2017-02-20 12:43:48 +00:00
Daniel Jasper c06f6da34e clang-format: [JS] Fix bugs in parsing and aligning template strings.
llvm-svn: 294009
2017-02-03 14:32:38 +00:00
Krasimir Georgiev 00c5c72d0e [clang-format] Don't reflow across comment pragmas.
Summary:
The comment reflower wasn't taking comment pragmas as reflow stoppers. This patch fixes that.

source:
```
// long long long long
// IWYU pragma:
```
format with column limit  = 20 before:
```
// long long long
// long IWYU pragma:
```
format with column limit  = 20 after:
```
// long long long
// long
// IWYU pragma:
```

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D29450

llvm-svn: 293898
2017-02-02 15:32:19 +00:00
Daniel Jasper c3aa05c01b clang-format: Do not use two-argument/operand special case with no alignment
Without alignment, there is no clean separation between the arguments, even if
there are only two.

Before:
  aaaaaaaaaaaaaa(
      aaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  aaaaaaaaaaaaaa(aaaaaaaaaaaa,
                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 293875
2017-02-02 08:30:21 +00:00
Daniel Jasper b127039c77 clang-format: Fix incorrect line breaks after forced operator wraps.
Before:
  bool x = aaaaa //
           ||
           bbbbb
           //
           || cccc;

After:
  bool x = aaaaa //
           || bbbbb
           //
           || cccc;

llvm-svn: 293839
2017-02-01 23:27:37 +00:00
Daniel Jasper 21f7dea5f5 clang-format: Don't force-wrap multiline RHSs for 2-operand experssions.
This rows back on r288120, r291801 and r292110. I apologize in advance
for the churn. All of those revisions where meant to make the wrapping
of RHS expressions more consistent. However, now that they are
consistent, we seem to be a bit too eager.

The reasoning here is that I think it is generally correct that we want
to line-wrap before multiline RHS expressions (or multiline arguments to
a function call). However, if there are only two of such operands or
arguments, there is always a clear vertical separation between them and
the additional line break seems much less desirable.

Somewhat good examples are expressions like:

  EXPECT_EQ(2, someLongExpression(
                   orCall));

llvm-svn: 293752
2017-02-01 09:23:39 +00:00
Daniel Jasper 3f11941d8a clang-format: [JS] Indent expressions in ${} relative to their surrounding
This only affects expressions inside ${} scopes of template strings.
Here, we want to indent relative to the surrounding template string and
not the surrounding expression. Otherwise, this can create quite a mess.

Before:
  var f = `
    aaaaaaaaaaaaaaaaaa: ${someFunction(
      aaaaa +  //
      bbbb)}`;

After:
  var f = `
    aaaaaaaaaaaaaaaaaa: ${someFunction(
                              aaaaa +  //
                              bbbb)}`;

llvm-svn: 293636
2017-01-31 14:39:33 +00:00
Daniel Jasper 7d42f3f746 [clang-format] Refactor WhitespaceManager and friends
The main motivation behind this is to cleanup the WhitespaceManager and
make it more extensible for future alignment etc. features.
Specifically, WhitespaceManager has started to copy more and more code
that is already present in FormatToken. Instead, I think it makes more
sense to actually store a reference to each FormatToken for each change.

This has as a consequence led to a change in the calculation of indent
levels. Now, we actually compute them for each Token ahead of time,
which should be more efficient as it removes an unsigned value for the
ParenState, which is used during the combinatorial exploration of the
solution space.

No functional changes intended.

Review: https://reviews.llvm.org/D29300
llvm-svn: 293616
2017-01-31 11:25:01 +00:00
Daniel Jasper 51c868e9aa clang-format: [JavaScript] Undo r291974 for JavaScript.
This had significant negative consequences and I don't have a good
solution for it yet.

Before:
  var string =
      [
        'aaaaaa',
        'bbbbbb',
      ]
          .join('+');

After:
  var string = [
    'aaaaaa',
    'bbbbbb',
  ].join('+');

llvm-svn: 293465
2017-01-30 07:08:40 +00:00
Krasimir Georgiev 91834227a3 [clang-format] Implement comment reflowing.
Summary:
This presents a version of the comment reflowing with less mutable state inside
the comment breakable token subclasses. The state has been pushed into the
driving breakProtrudingToken method. For this, the API of BreakableToken is enriched
by the methods getSplitBefore and getLineLengthAfterSplitBefore.

Reviewers: klimek

Reviewed By: klimek

Subscribers: djasper, klimek, mgorny, cfe-commits, ioeric

Differential Revision: https://reviews.llvm.org/D28764

llvm-svn: 293055
2017-01-25 13:58:58 +00:00
Daniel Jasper 240527ca99 clang-format: Always wrap before multi-line parameters/operands.
Before:
  aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::
                                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                     aaaaaaaaaaaaaaaaaaaaa);

After:
  aaaaaaaaaaaaaaaaaa(aaaaaaaa,
                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::
                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                     aaaaaaaaaaaaaaaaaaaaa);

No new test cases, as the existing ones cover this fairly well.

llvm-svn: 292110
2017-01-16 13:13:15 +00:00
Daniel Jasper e61f9f9949 clang-format: Fix bug in making line break decisions.
Here, the optimization to not line wrap when it would not lead to a
reduction in columns was overwriting and enforced break that we want to
do no matter what.

Before:
  int i = someFunction(
              aaaaaaa,
              0).aaa(aaaaaaaaaaaaa) *
              aaaaaaa +
          aaaaaaa;

After:
  int i = someFunction(aaaaaaa, 0)
                  .aaa(aaaaaaaaaaaaa) *
              aaaaaaa +
          aaaaaaa;

llvm-svn: 291974
2017-01-13 23:18:16 +00:00
Daniel Jasper e37101076c clang-format: Fix regression introduced by r291801.
Uncovered by polly tests.

Before:
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,
                                 {}, aaaaaaaaaaaaaaaaaaaaaaa);

After:
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa, {},
                                 aaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 291807
2017-01-12 20:06:28 +00:00
Daniel Jasper d1a9d8acdf clang-format: Treat braced lists like other complex parameters.
Specifically, wrap before them if they are multi-line so that we don't
create long hanging indents. This prevents having a lot of code
indented a lot in some cases.

Before:
  someFunction(Param, {List1, List2,
                       List3});

After:
  someFunction(Param,
               {List1, List2,
                List3});

llvm-svn: 291801
2017-01-12 19:35:26 +00:00
Daniel Jasper 7aacf468c0 clang-format: Slightly tweak the behavior of <<-wrapping.
Before:
  SomeLongLoggingStatementOrMacro() << "Some long text "
                                    << some_variable << "\n";

Before:
  SomeLongLoggingStatementOrMacro()
      << "Some long text " << some_variable << "\n";

Short logging statements are already special cased in a different part
of the code.

llvm-svn: 290094
2016-12-19 11:14:23 +00:00
Daniel Jasper 03a04fe95f clang-format: Separate out a language kind for ObjC.
While C(++) and ObjC are generally formatted the same way and can be
mixed, people might want to choose different styles based on the
language. This patch recognizes .m and .mm files as ObjC and also
implements a very crude detection of whether or not a .h file contains
ObjC code. This can be improved over time.

Also move most of the ObjC tests into their own test file to keep file
size maintainable.

llvm-svn: 289428
2016-12-12 12:42:29 +00:00
Daniel Jasper 22ed262c23 clang-format: Wrap complex binary expressions on the RHS of a comma.
Specifically, if the RHS of a comma is a complex binary expression and
spans multiple lines, insert a line break before it. This usually is
often more readable compared to producing a hanging indent. See changes
in FormatTest.cpp for examples.

llvm-svn: 288120
2016-11-29 09:40:32 +00:00
Daniel Jasper 35e4122f48 clang-format: Fix unnnecessary line break.
Before:
  aaaaaaaaaa(aaaa(aaaa,
		  aaaa), //
	     aaaa,
             aaaaa);

After:
  aaaaaaaaaa(aaaa(aaaa,
		  aaaa), //
	     aaaa, aaaaa);

llvm-svn: 288119
2016-11-29 09:40:01 +00:00
Daniel Jasper fd36f0b504 clang-format: Support ObjC selectors with unnamed parameters.
This fixes llvm.org/PR28063.

llvm-svn: 286715
2016-11-12 07:38:22 +00:00
Mehdi Amini 9670f847b8 [NFC] Header cleanup
Summary: Removed unused headers, replaced some headers with forward class declarations

Patch by: Eugene <claprix@yandex.ru>

Differential Revision: https://reviews.llvm.org/D20100

llvm-svn: 275882
2016-07-18 19:02:11 +00:00
Daniel Jasper 87448c5548 clang-format: Don't indent lambda body relative to its return type.
Before:
  []()  //
      -> int {
        return 1;  //
      };

After:
  []()  //
      -> int {
    return 1;  //
  };

llvm-svn: 272535
2016-06-13 07:48:45 +00:00
Daniel Jasper acadc8e0d6 clang-format: Fix incorrect calculation of "length" of /**/ comments.
This could lead to column limit violations.

llvm-svn: 272125
2016-06-08 09:45:08 +00:00
Daniel Jasper e77f19c0af clang-format: Fix segfault introduced by allowing wraps after comments.
llvm-svn: 271191
2016-05-29 22:07:22 +00:00
Eric Liu 635423e618 Addressed reviewer's post-submission comments from http://reviews.llvm.org/D18551.
Summary: Make SourceManager in Environment, WhitespaceManager, and FormatTokenAnalyzer etc constant members.

Reviewers: djasper, klimek

Subscribers: cfe-commits, klimek

Differential Revision: http://reviews.llvm.org/D19587

llvm-svn: 267859
2016-04-28 07:52:03 +00:00
Martin Probst 5f8445b32a clang-format: [JS] generator and async functions.
For generators, see:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators
async functions are not quite in the spec yet, but stage 3 and already widely used:
http://tc39.github.io/ecmascript-asyncawait/

Reviewers: djasper

Subscribers: klimek

Differential Revision: http://reviews.llvm.org/D19204

llvm-svn: 267368
2016-04-24 22:05:09 +00:00
Daniel Jasper 710f8493c8 clang-format: Slightly weaken AlignAfterOpenBracket=AlwaysBreak.
If a call takes a single argument, using AlwaysBreak can lead to lots
of wasted lines and additional indentation without improving the
readability in a significant way.

Before:
  caaaaaaaaaaaall(
      caaaaaaaaaaaall(
          caaaaaaaaaaaall(
              caaaaaaaaaaaaaaaaaaaaaaall(aaaaaaaaaaaaaa, aaaaaaaaa))));

After:
  caaaaaaaaaaaall(caaaaaaaaaaaall(caaaaaaaaaaaall(
      caaaaaaaaaaaaaaaaaaaaaaall(aaaaaaaaaaaaaa, aaaaaaaaa))));

llvm-svn: 263709
2016-03-17 12:00:22 +00:00
Daniel Jasper 04b4e10873 clang-format: Correctly apply wrap before multi-line RHS rule to
ternary expressions.

Before:
  return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaa : bbbbbbbbbbbbbbb +
							     cccccccccccccccc;

After:
  return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?
	     aaaaa :
	     bbbbbbbbbbbbbbb + cccccccccccccccc;

llvm-svn: 262293
2016-03-01 04:19:59 +00:00
Daniel Jasper 602a727add clang-format: Make indentation after "<<" more consistent.
Before:
  Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)
      << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);
  Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)
      << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
      << aaa;

After:
  Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)
      << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);
  Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)
      << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
      << aaa;

llvm-svn: 260517
2016-02-11 13:15:14 +00:00
Daniel Jasper 2a9f720129 clang-format: Fix weird alignment when not aligning after brackets.
Before:
  bbbbbbbbbbbb(aaaaaaaaaaaaaaaaaaaaaaaa, //
      ccccccc(aaaaaaaaaaaaaaaaa, //
	           b));

After:
  bbbbbbbbbbbb(aaaaaaaaaaaaaaaaaaaaaaaa, //
      ccccccc(aaaaaaaaaaaaaaaaa, //
     	  b));

This fixes llvm.org/PR24905.

llvm-svn: 260080
2016-02-08 09:52:54 +00:00
Daniel Jasper 0c9772e874 clang-format: Fix corner case in template detection.
Before:
  f(a.operator() < A > ());

After:
  f(a.operator()<A>());

llvm-svn: 259884
2016-02-05 14:17:16 +00:00
Daniel Jasper 45860fac37 clang-format: Fix formatting of ternary expressions with comments.
Before:
  int i = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?
	      /*bbbbbbbbbbbbbbbbbbbb=*/bbbbbbbbbbbbbbbbbbbbbbbbb :
				       ccccccccccccccccccccccccccc;

After:
  int i = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?
	      /*bbbbbbbbbbbbbbbbbbbb=*/bbbbbbbbbbbbbbbbbbbbbbbbb :
              ccccccccccccccccccccccccccc;

llvm-svn: 259670
2016-02-03 17:27:10 +00:00
Daniel Jasper b618a98582 clang-format: Make AlignAfterOpenBracket also affect angle brackets.
Patch by Matthew Whitehead, thank you.

llvm-svn: 259487
2016-02-02 10:28:11 +00:00
Daniel Jasper e1a7b76338 clang-format: Add option to disable string literal formatting.
llvm-svn: 259352
2016-02-01 11:21:02 +00:00
Daniel Jasper 15b01116d9 clang-format: [Java] Remove unnecessary line break after complex annotations
Before:
  @Annotation("Some"
      + " text")
  List<Integer>
      list;

After:
  @Annotation("Some"
      + " text")
  List<Integer> list;

llvm-svn: 258981
2016-01-27 20:14:23 +00:00
Daniel Jasper a3cd216483 clang-format: Fix incorrectly enforced linebreak with ColumnLimit 0.
Before:
  aaaa[bbbb]
      .cccc();

After:
  aaaa[bbbb].cccc();

llvm-svn: 257763
2016-01-14 13:36:46 +00:00
Daniel Jasper 50780ce110 clang-format: [ObjC+JS] Allow bin-packing of array literals.
After reading the style guides again, they don't actually say how to
pack or not pack array literals. Based on some user reports, array
initializers can unnecessarily get quite long if they contain many
small elements. Array literals with trailing commas are still formatted
one per line so that users have a way to opt out of the packing.

Before:
  var array = [
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa,
    aaaaaa
  ];

After:
  var array = [
    aaaaaa, aaaaaa, aaaaaa, aaaaaa, aaaaaa, aaaaaa, aaaaaa, aaaaaa, aaaaaa,
    aaaaaa, aaaaaa
  ];

llvm-svn: 257615
2016-01-13 16:41:34 +00:00
Daniel Jasper 06ca0fc69d clang-format: Slightly row back on r257257.
r257257 change the way clang-format enforces line breaks after a
templated type has been line-wrapped. This was to fix an incorrect line
break if BinPackParameters is set to false. However, it also leads to
an unwanted line break in a different case. Thus, for now, only do this
when BinPackParameters is false. This isn't ideal yet, but helps us
until we have a better solution.

With BinPackParameters:
Before:
  void fffffffffff(aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa,
                                               aaaaaaaaaa> aaaaaaaaaa);

After:
  void fffffffffff(
      aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaa>
          aaaaaaaaaa);

llvm-svn: 257325
2016-01-11 11:01:05 +00:00
Daniel Jasper 2802456097 clang-format: [JS] Improve line-flow when calling functions on array literals.
Before:
  return [
    aaaaaaaaaaaaaaaaaaaaaa
  ].aaaaaaa(function() {
     //
   })
   .bbbbbb();

After:
  return [aaaaaaaaaaaaaaaaaaaaaa]
      .aaaaaaa(function() {
	//
      })
      .bbbbbb();

llvm-svn: 257324
2016-01-11 11:00:58 +00:00
Daniel Jasper 00693b08cf clang-format: Fix incorrect line break in certain configurations.
Before:
  void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                          vector<int>
                              bbbbbbbbbbbbbbb);

After:
  void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                          vector<int> bbbbbbbbbbbbbbb);

llvm-svn: 257257
2016-01-09 15:56:47 +00:00
Daniel Jasper 804a276fcf clang-format: Support definitions/declarations of operator,.
Before:
  bool operator, ();

After:
  bool operator,();

llvm-svn: 257256
2016-01-09 15:56:40 +00:00
Daniel Jasper 7bec87c998 clang-format: Fix corner case in one-per-line formatting.
Before (example is JS, but also applies to C++):
  return [
    aaaa()
        .bbbbbbbb('A'),
    aaaa().bbbbbbbb('B'),
    aaaa().bbbbbbbb('C'),
  ];

After:
  return [
    aaaa().bbbbbbbb('A'),
    aaaa().bbbbbbbb('B'),
    aaaa().bbbbbbbb('C'),
  ];

llvm-svn: 257079
2016-01-07 18:11:54 +00:00
Daniel Jasper 411af72e8c clang-format: Fix corner case in "if it saves columns"-calculation.
Before:
  aaaa
      .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
      .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
	  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
      .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 256841
2016-01-05 16:10:39 +00:00
Daniel Jasper 0a589416e8 clang-format: Handle \n the same way as std::endl with stream operator.
clang-format breaks multi-line streams after std::endl.
It now also break for '\n', the suggested replacement for std::endl:

  http://llvm.org/docs/CodingStandards.html#avoid-std-endl

Before:
  llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << '\n' << bbbbbbbbbbbbbbbbbbbbbb
               << '\n';
  llvm::errs() << aaaa << "aaaaaaaaaaaaaaaaaa\n" << bbbb
               << "bbbbbbbbbbbbbbbbbb\n";

After:
  llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << '\n'
               << bbbbbbbbbbbbbbbbbbbbbb << '\n';
  llvm::errs() << aaaa << "aaaaaaaaaaaaaaaaaa\n"
               << bbbb << "bbbbbbbbbbbbbbbbbb\n";

This changeset ensure that multiline streams have a line break after:
  - std::endl
  - '\n'
  - "\n"
  - "Some Text\n"

Patch by Jean-Philippe Dufraigne, thank you.

llvm-svn: 256832
2016-01-05 13:06:27 +00:00
Daniel Jasper 801cdb27e4 clang-format: Avoid creating hanging indents in call sequences.
Before:
  aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaa(
                      aaaaaaaaaaaaaaaaaaaa)
        .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  aaaaaaaaaaaaaaaa
        .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)
        .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 256831
2016-01-05 13:03:59 +00:00
Daniel Jasper 00492f96bf clang-format: Improve line wrapping behavior in call sequences.
r256750 has been leading to an undesired behavior:

  aaaaaaaaaa
      .aaaaaaaaaaaaaaaaaaaaaaaa.aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

This change increases penalty for wrapping before member accesses that aren't
calls. Thus, this is again formatted as (as it has been before r256750):

  aaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaa.aaaaaa(
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 256830
2016-01-05 13:03:50 +00:00
Daniel Jasper 06a269574c clang-format: Fix corner-case in ObjC method declaration formatting
Before:
  - (void)shortf:(GTMFoo *)theFoo
     longKeyword:(NSRect)theRect
   longerKeyword:(float)theInterval
           error:(NSError **)theError {
  }

After:
  - (void)shortf:(GTMFoo *)theFoo
        longKeyword:(NSRect)theRect
      longerKeyword:(float)theInterval
              error:(NSError **)theError {
  }

llvm-svn: 256738
2016-01-04 07:29:07 +00:00
Daniel Jasper ccff4d1e60 clang-format: [Proto] Improve wrapping of message field attributes.
Before:
  optional AAA aaa = 1 [foo =
			    {
			      key: "a"  //
			    },
			bar = {
			  key: "a"  //
			}];

After:
  optional AAA aaa = 1 [
    foo = {
      key: "a"  //
    },
    bar = {
      key: "a"  //
    }
  ];

llvm-svn: 256736
2016-01-04 07:27:33 +00:00
Zachary Turner 448592eeac Support AlwaysBreakAfterReturnType
This changes the behavior of AlwaysBreakAfterDeclarationReturnType
so that it supports breaking after declarations, definitions, or
both.

Differential Revision: http://reviews.llvm.org/D10370
Reviewed By: Daniel Jasper

llvm-svn: 256046
2015-12-18 22:20:15 +00:00
Daniel Jasper a0a5039d2e clang-format: Make it possible to turn off comment reflowing.
llvm-svn: 254414
2015-12-01 13:28:53 +00:00
Daniel Jasper 253dad2323 clang-format: If the template list of a variable declaration spans
multiple lines, also break before the variable name.

Before:
  std::vector<aaaaaa, // wrap
              aa> aaa;

After:
  std::vector<aaaaaa, // wrap
              aa>
      aaa;

llvm-svn: 253871
2015-11-23 15:55:45 +00:00
Daniel Jasper bd73bcf84a clang-format: Undo unwanted format change done in r251405.
Specifically, don't wrap between the {} of an empty constructor if the
"}" falls on column 81 and ConstructorInitializerAllOnOneLineOrOnePerLine
is set.

llvm-svn: 251406
2015-10-27 13:42:08 +00:00
Daniel Jasper 6501f7e8fd clang-format: Add an additional value to AlignAfterOpenBracket: AlwaysBreak.
Summary:
If this option is set, clang-format will always insert a line wrap, e.g.
before the first parameter of a function call unless all parameters fit
on the same line. This obviates the need to make a decision on the
alignment itself.

Use this style for Google's JavaScript style and add some minor tweaks
to correctly handle nested blocks etc. with it. Don't use this option
for for/while loops.

Reviewers: klimek

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D14104

llvm-svn: 251405
2015-10-27 12:38:37 +00:00
Daniel Jasper 7b259cda96 clang-format: Don't let a leading "template <..>" lead to wrapped initializers.
Before:
  Constructor() : initializer(0) {}

  template <typename T>
  Constructor()
      : initializer(0) {}

After:
  Constructor() : initializer(0) {}

  template <typename T>
  Constructor() : initializer(0) {}

llvm-svn: 246146
2015-08-27 11:59:31 +00:00
Daniel Jasper 100ffc632a clang-format: Be more conservative about specially indenting blocks in C++.
This is a bit of a step back of what we did in r222531, as there are
some corner cases in C++, where this kind of formatting is really bad.

Example:
Before:
  virtual aaaaaaaaaaaaaaaa(std::function<bool()> IsKindWeWant = [&]() {
    return true;
  }, aaaaa aaaaaaaaa);

After:
  virtual aaaaaaaaaaaaaaaa(std::function<bool()> IsKindWeWant =
                               [&]() { return true; },
                           aaaaa aaaaaaaaa);

The block formatting logic in JavaScript will probably go some other changes,
too, and we'll potentially be able to make the rules more consistent again. For
now, this seems to be the best approach for C++.

llvm-svn: 245694
2015-08-21 11:44:57 +00:00
Daniel Jasper 3c44c220f5 clang-format: Respect IndentWrappedFunctionNames when aligning colons
Before:
  - (void)shortf:(GTMFoo *)theFoo
  dontAlignNamef:(NSRect)theRect {
  }

After:
  - (void)shortf:(GTMFoo *)theFoo
      dontAlignNamef:(NSRect)theRect {
  }

Patch by Kwasi Mensah, thank you!

llvm-svn: 242484
2015-07-16 22:58:24 +00:00
Birunthan Mohanathas 525579d41c clang-format: Fix return type breaking with overloaded operator functions
Differential Revision: http://reviews.llvm.org/D11177

llvm-svn: 242316
2015-07-15 19:11:58 +00:00
Daniel Jasper ea40cee24d clang-format: Fix formatting of multiple lambdas in initializers.
Before:
  SomeFunction({[&] {
    // comment
  },
                [&] {
                  // comment
                }});

After:
  SomeFunction({[&] {
                  // comment
                },
                [&] {
                  // comment
                }});

llvm-svn: 242138
2015-07-14 11:26:14 +00:00
Daniel Jasper b2328b1e7f clang-format: [JS] Prevent confusing TypeScript parameters wraps.
Before:
  aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa:
                     aaaaaaaaaaaaaaaaaa): aaaaaaaaaaaaaaaaaaaaaa {}

After:
  aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa,
                     aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa):
      aaaaaaaaaaaaaaaaaaaaaa {}

llvm-svn: 241444
2015-07-06 14:07:51 +00:00
Birunthan Mohanathas a0388a8af2 clang-format: Add option to break after definition return type for top-level functions only
Differential Revision: http://reviews.llvm.org/D10774

llvm-svn: 240959
2015-06-29 15:30:42 +00:00
Daniel Jasper 739b85f2e7 clang-format: Don't indent relative to unary operators (some more).
Before:
  long aaaaaaaa = !aaaa( // break
                      aaaaaa);
  long aaaaaaaa = !aa.aa( // break
      aaaaaa);

After:
  long aaaaaaaa = !aaaa( // break
      aaaaaa);
  long aaaaaaaa = !aa.aa( // break
      aaaaaa);

llvm-svn: 240934
2015-06-29 10:42:59 +00:00
Daniel Jasper 9fb676a254 clang-format: Make exception to AlwaysBreakBeforeMultilineStrings more
conservative.

In particular, this fixes an unwanted corner case.

Before:
  string s =
      someFunction("aaaa"
                   "bbbb");

After:
  string s = someFunction(
      "aaaa"
      "bbbb");

llvm-svn: 240129
2015-06-19 10:32:28 +00:00
Daniel Jasper 1bf729cee1 clang-format: Row back on the AlwaysBreakBeforeMultilineStrings change.
It was a bit too aggressive.

With this patch, we keep on breaking here:
  aaaaaaaaaaaaa(aaaaaaa,
                "aaaaaaa"
                "bbbbbbb");

But don't break in:
  aaaaaaaaaaaaa(aaaaaaa, aaaaaaaa("aaaaaaa"
                                  "bbbbbbb"));

llvm-svn: 240024
2015-06-18 16:05:17 +00:00
Daniel Jasper ed3f395773 clang-format: [JS] Add a special case for indenting function literals.
Before:
  var func =
      function() {
        doSomething();
      };

After:
  var func =
      function() {
    doSomething();
  };

This is a very narrow special case which fixes most of the discrepency
with what our users do. In the long run, we should try to come up with
a more generic fix for indenting these.

llvm-svn: 240014
2015-06-18 12:32:59 +00:00
Daniel Jasper 2aaedd3a7e clang-format: Make AlwaysBreakBeforeMultilineStrings more conservative.
In essence this is meant to consistently indent multiline strings by a
fixed amount of spaces from the start of the line. Don't do this in
cases where it wouldn't help anyway.

Before:
  someFunction(aaaaa,
               "aaaaa"
               "bbbbb");

After:
  someFunction(aaaaa, "aaaaa"
                      "bbbbb");

llvm-svn: 240004
2015-06-18 09:12:47 +00:00
Daniel Jasper e6fcf7d372 clang-format: clang-format (NFC)
llvm-svn: 239903
2015-06-17 13:08:06 +00:00
Daniel Jasper b2ad4d4c26 clang-format: [JS] Tweak behavior for multiline array initializer parameters
Before:
  var someVariable = SomeFuntion(aaaa, [
    aaaaaaaaaaaaaaaaaaaaaaaaaaa,
    bbbbbbbbbbbbbbbbbbbbbbbbbbb,
    ccccccccccccccccccccccccccc
  ],
                                 aaaa);

After:
  var someVariable = SomeFuntion(aaaa,
                                 [
                                   aaaaaaaaaaaaaaaaaaaaaaaaaaa,
                                   bbbbbbbbbbbbbbbbbbbbbbbbbbb,
                                   ccccccccccccccccccccccccccc
                                 ],
                                 aaaa);

llvm-svn: 239722
2015-06-15 09:23:17 +00:00
Daniel Jasper 6f2b88a398 clang-format: More eagerly wrap trailing return types.
Before:
  template <typename T>
  auto aaaaaaaaaaaaaaaaaaaaaa(T t) -> decltype(eaaaaaaaaaaaaaaa<T>(t.a)
                                                   .aaaaaaaa());

After:
  template <typename T>
  auto aaaaaaaaaaaaaaaaaaaaaa(T t)
      -> decltype(eaaaaaaaaaaaaaaa<T>(t.a).aaaaaaaa());

Also add a test case for a difficult template parsing case I stumbled accross.
Needs fixing.

llvm-svn: 239149
2015-06-05 13:18:09 +00:00