Commit Graph

515 Commits

Author SHA1 Message Date
Daniel Jasper 1cb530f1e0 Always format entire macro definitions.
Thereby, the macro is consistently formatted (including the trailing
escaped newlines) even if clang-format is invoked only on single lines
of the macro.

llvm-svn: 181590
2013-05-10 13:00:49 +00:00
Alexander Kornienko 49149677d9 Config file support for clang-format, part 2.
Summary:
Adds actual config file reading to the clang-format utility.
Configuration file name is .clang-format. It is looked up for each input file
in its parent directories starting from immediate one. First found .clang-format
file is used. When using standard input, .clang-format is searched starting from
the current directory.
Added -dump-config option to easily create configuration files.

Reviewers: djasper, klimek

Reviewed By: klimek

CC: cfe-commits, jordan_rose, kimgr

Differential Revision: http://llvm-reviews.chandlerc.com/D758

llvm-svn: 181589
2013-05-10 11:56:10 +00:00
Daniel Jasper 8f9624b3bc Fix bug when formatting overloaded operators.
Before, the actual operator of an overloaded operator declaration was
handled as a binary operator an thus, clang-format could not find valid
formattings for many examples, e.g.:

template <typename AAAAAAA, typename BBBBBBB>
AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);

llvm-svn: 181585
2013-05-10 07:59:58 +00:00
Daniel Jasper 2f34cacc3b Further fix to pointer to member formatting.
With style where the *s go with the type:
Before: typedef bool* (Class:: *Member)() const;
After:  typedef bool* (Class::*Member)() const;

llvm-svn: 181439
2013-05-08 15:06:58 +00:00
Daniel Jasper cfda517ea8 Fix formatting of pointers to members.
Before: int(S::*func)(void *);
After:  int (S::*func)(void *);
llvm-svn: 181438
2013-05-08 14:58:20 +00:00
Daniel Jasper d69fc77b9e Improve line breaking in binary expressions.
If the LHS of a binary expression is broken, clang-format should also
break after the operator as otherwise:
- The RHS can be easy to miss
- It can look as if clang-format doesn't understand operator precedence

Before:
bool aaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=
                                 bbbbbbbbbbbbbbbbbb && ccccccccc == ddddddddddd;
After:
bool aaaaaaaaaaaaaaaaaaaaa =
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&
    ccccccccc == ddddddddddd;

As an additional note, clang-format would also be ok with the following
formatting, it just has a higher penalty (IMO correctly so).
bool aaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=
                                 bbbbbbbbbbbbbbbbbb &&
                             ccccccccc == ddddddddddd;

llvm-svn: 181430
2013-05-08 14:12:04 +00:00
Daniel Jasper 0f0234e16e Change indentation of multi-line nested name specifiers.
Before:
aaaaaaaa::
    aaaaaaaa::
    aaaaaaaa();
After:
aaaaaaaa::
    aaaaaaaa::
        aaaaaaaa();

The reason for the change is that:
a) we are not sure which is better
b) it is a really rare edge case
c) it simplifies the code
d) it currently causes problems with memoization

llvm-svn: 181421
2013-05-08 10:00:18 +00:00
Alexander Kornienko d6538338fd Config file support for clang-format, part 1.
Summary:
Added parseConfiguration method, which reads FormatStyle from YAML
string. This supports all FormatStyle fields and an additional BasedOnStyle
field, which can be used to specify base style.

Reviewers: djasper, klimek

Reviewed By: djasper

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D754

llvm-svn: 181326
2013-05-07 15:32:14 +00:00
Daniel Jasper 990ff9729b Correctly recognize dereference after 'delete'.
With certain styles:
Before: delete* x;
After:  delete *x;

llvm-svn: 181318
2013-05-07 14:17:18 +00:00
Alexander Kornienko c860266e0f Added Mozilla style, cleaned get*Style methods.
Summary: Patch based on a patch by Ehsan Akhgari.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D750

llvm-svn: 181196
2013-05-06 14:11:27 +00:00
Daniel Jasper 4a4be01818 Don't break comments after includes.
LLVM/Clang basically don't use such comments and for Google-style,
include-lines are explicitly exempt from the column limit. Also, for
most cases, where the column limit is violated, the "better" solution
would be to move the comment to before the include, which clang-format
cannot do (yet).

llvm-svn: 181191
2013-05-06 10:24:51 +00:00
Daniel Jasper 8e35769b24 Change indentation when breaking after a type.
clang-format did not indent any declarations/definitions when breaking
after the type. With this change, it indents for all declarations but
does not indent for function definitions, i.e.:

Before:
const SomeLongTypeName&
some_long_variable_name;
typedef SomeLongTypeName
SomeLongTypeAlias;
const SomeLongReturnType*
SomeLongFunctionName();
const SomeLongReturnType*
SomeLongFunctionName() { ... }

After:
const SomeLongTypeName&
    some_long_variable_name;
typedef SomeLongTypeName
    SomeLongTypeAlias;
const SomeLongReturnType*
    SomeLongFunctionName();
const SomeLongReturnType*
SomeLongFunctionName() { ... }

While it might seem inconsistent to indent function declarations, but
not definitions, there are two reasons for that:
- Function declarations are very similar to declarations of function
type variables, so there is another side to consistency to consider.
- There can be many function declarations on subsequent lines and not
indenting can make them harder to identify. Function definitions
are already separated by their body and not indenting
makes the function name slighly easier to find.

llvm-svn: 181187
2013-05-06 08:27:33 +00:00
Daniel Jasper a61aefb367 Break the class-inheritance ":" to the new line.
This seems to be more common in LLVM, Google and Chromium.

Before:
class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA :
    public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,
    public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {
};

After:
class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,
      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {
};

llvm-svn: 181183
2013-05-06 06:45:09 +00:00
Daniel Jasper 10cd581f95 Don't put a space before ellipsis.
Before: template <class ... Ts> void Foo(Ts ... ts) { Foo(ts ...); }
After:  template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }
llvm-svn: 181182
2013-05-06 06:35:44 +00:00
Daniel Jasper 72463d32e0 Add space between ; and (.
Before: for (int i = 0;(i < 10); ++i) {}
After:  for (int i = 0; (i < 10); ++i) {}
llvm-svn: 181020
2013-05-03 14:50:50 +00:00
Daniel Jasper c37de30219 Fix expression recognition in for-loops.
Before: for (; a&& b;) {}
After:  for (; a && b;) {}
llvm-svn: 181017
2013-05-03 14:41:24 +00:00
Daniel Jasper e3c0e0144e Improve clang-format's memoization behavior.
Deeply nested expressions basically break clang-format's memoization.
This patch slightly improves the situations and makes expressions like

  aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
      aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
          aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
              aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
                  aaaaa(aaaaa())))))))))))))))))))))))))))))))))))))));

work.

llvm-svn: 180264
2013-04-25 13:31:51 +00:00
Daniel Jasper 6fe2f009df Add option to align escaped newlines left.
This enables formattings like:

  #define A   \
    int aaaa; \
    int b;    \
    int ccc;  \
    int dddddddddd;

Enabling this for Google/Chromium styles only as I don't know whether it
is desired for Clang/LLVM.

llvm-svn: 180253
2013-04-25 08:56:26 +00:00
Daniel Jasper 085a2edaea Flip flag to merge short if-statements into one line for Google style.
This now allows clang-format to do:
if (a) return;

llvm-svn: 180187
2013-04-24 13:46:00 +00:00
Daniel Jasper 770eb7c5f9 Fix comment alignment behavior.
In the following snippet, clang-format incorrectly aligned the
trailing comment, when only the last line was formatted:

  int aaaaaa; // comment
  int b;
  int c; // Formatting only this line moved this comment.

llvm-svn: 180173
2013-04-24 06:33:59 +00:00
Daniel Jasper 4431aa99ab Fix formatting of complex #if expressions.
Before:
  #if !defined(AAAAAAAAAAAAAAAA) && (defined CCCCCCCC ||                         \
                                     defined DDDDDDDD) && defined(BBBBBBBB)

After:
  #if !defined(AAAAAAAAAAAAAAAA) && (defined CCCCCCCC || defined DDDDDDDD) &&    \
      defined(BBBBBBBB)

This fixes llvm.org/PR15828.

llvm-svn: 180105
2013-04-23 13:54:04 +00:00
Daniel Jasper cc960fa645 Fix bin-packing behavior of constructor initialziers.
In Google style, constructor initializers need to be all on one line or
one initializer per line if that does not fit. Without this patch, this
non-bin-packing-behavior incorrectly extends to the parameters of the
initializers.

Before:
Constructor()
    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa,
            aaaaaaaaaaaaaaaaaaaaaa,
            aaaaaaaaaaaaaaaaaaaaaa) {}

After:
Constructor()
    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,
            aaaaaaaaaaaaaaaaaaaaaa) {}

llvm-svn: 180001
2013-04-22 07:59:53 +00:00
Alexander Kornienko 9e90b62e01 Unified token breaking logic: support for line comments.
Summary:
Added BreakableLineComment, moved common code from
BreakableBlockComment to newly added BreakableComment. As a side-effect of the
rewrite, found another problem with escaped newlines and had to change
code which removes trailing whitespace from line comments not to break after
this patch.

Reviewers: klimek, djasper

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D682

llvm-svn: 179693
2013-04-17 17:34:05 +00:00
Daniel Jasper 1b8e76f14e Break after multiline parameters.
We do this in general, but missed a few cases.

Before:
void aaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbb bbbb);

After:
void aaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
    bbbb bbbb);

llvm-svn: 179570
2013-04-15 22:36:37 +00:00
Alexander Kornienko c3c8affc06 Fix unused variable warning with assertions disabled.
llvm-svn: 179531
2013-04-15 15:47:34 +00:00
Alexander Kornienko cb45bc1861 Unified token breaking logic for strings and block comments.
Summary:
Both strings and block comments are broken into lines in
breakProtrudingToken. Logic specific for strings or block comments is abstracted
in implementations of the BreakToken interface. Among other goodness, this
change fixes placement of backslashes after a block comment inside a
preprocessor directive (see removed FIXMEs in unit tests).

The code is far from being polished, and some parts of it will be changed for
line comments support.

Reviewers: klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D665

llvm-svn: 179526
2013-04-15 14:28:00 +00:00
Manuel Klimek 1a18c40468 Revamps structural error detection / handling.
Previously we'd only detect structural errors on the very first level.
This leads to incorrectly balanced braces not being discovered, and thus
incorrect indentation.

This change fixes the problem by:
- changing the parser to use an error state that can be detected
  anywhere inside the productions, for example if we get an eof on
  SOME_MACRO({ some block <eof>
- previously we'd never break lines when we discovered a structural
  error; now we break even in the case of a structural error if there
  are two unwrapped lines within the same line; thus,
  void f() { while (true) { g(); y(); } }
  will still be re-formatted, even if there's missing braces somewhere
  in the file
- still exclude macro definitions from generating structural error;
  macro definitions are inbalanced snippets

llvm-svn: 179379
2013-04-12 14:13:36 +00:00
Daniel Jasper 6728fc11bc Change clang-format's affinity for breaking after return types.
Function declarations are now broken with the following preferences:
1) break amongst arguments.
2) break after return type.
3) break after (.
4) break before after nested name specifiers.

Options #2 or #3 are preferred over #1 only if a substantial number of
lines can be saved by that.

llvm-svn: 179287
2013-04-11 14:29:13 +00:00
Daniel Jasper 6e8f4edf2d Fix formatting of overloaded assignment operators.
Before: SomeType &operator=(const SomeType & S);
After:  SomeType &operator=(const SomeType &S);
llvm-svn: 179270
2013-04-11 08:48:20 +00:00
Manuel Klimek a3ff45ebed Fixes recovering from errors when parsing braced init lists.
Before we would build huge unwrapped lines which take a long time
to optimze.

llvm-svn: 179168
2013-04-10 09:52:05 +00:00
Daniel Jasper c04baae34a Fix labels with trailing comments and cleanup.
Before:
class A {
public : // test
};

After:
class A {
public: // test
};

Also remove duplicate methods calculating properties of AnnotatedTokens
and make them members of AnnotatedTokens so that they are in a common
place.

llvm-svn: 179167
2013-04-10 09:49:49 +00:00
Daniel Jasper b67cc423eb Fix comments before labels.
Before:
switch (...) {
  // a
  // b
// c
case first:
  break;
}

After:
switch (...) {
// a
// b
// c
case first:
  break;
}

llvm-svn: 179107
2013-04-09 17:46:55 +00:00
Alexander Kornienko a04e5e213b Again macros without trailing semicolons: don't care about declaration context.
Summary:
Some codebases use these kinds of macros in functions, e.g. Chromium's
IPC_BEGIN_MESSAGE_MAP, IPC_BEGIN_MESSAGE_HANDLER, etc.

Reviewers: djasper, klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D645

llvm-svn: 179099
2013-04-09 16:15:19 +00:00
Alexander Kornienko de64427ac6 Recognize function-like macro usages without semicolon in declaration context.
Summary:
Preserve line breaks after function-like macro usages without
semicolon, e.g.:

QQQ(xxx)
class X {
};

Reviewers: djasper, klimek

Reviewed By: djasper

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D638

llvm-svn: 179064
2013-04-08 22:16:06 +00:00
Daniel Jasper 6bee682fae Revamp indentation behavior for complex binary expressions.
The idea is to indent according to operator precedence and pretty much
identical to how stuff would be indented with parenthesis.

Before:
bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *
             bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +
             bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >
             ccccccccccccccccccccccccccccccccccccccccc;

After:
  bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==
                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *
                           bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +
                       bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&
               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *
                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >
                   ccccccccccccccccccccccccccccccccccccccccc;

llvm-svn: 179049
2013-04-08 20:33:42 +00:00
Daniel Jasper e7de2a3013 Revert accidental commit r179015.
llvm-svn: 179016
2013-04-08 10:45:44 +00:00
Daniel Jasper bd16eea59f x
llvm-svn: 179015
2013-04-08 10:36:32 +00:00
Daniel Jasper 8319360099 Allow breaking after 'class' for classes with looong names.
(Don't ask, this was a user request).

llvm-svn: 178888
2013-04-05 17:22:09 +00:00
Daniel Jasper 54ac820890 Fix bad formatting of overloaded operator definitions.
Before:
bool operator<
    (const aaaaaaaaaaaaaaaaaaaaa &left, const aaaaaaaaaaaaaaaaaaaaa &right) {
  return left.group < right.group;
}

After:
bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,
               const aaaaaaaaaaaaaaaaaaaaa &right) {
  return left.group < right.group;
}

llvm-svn: 178887
2013-04-05 17:21:59 +00:00
Daniel Jasper 31c96b9c7e Improve formatting of multi-variable DeclStmts.
This fixed llvm.org/PR15670

Before:
aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,
                                    c = cccccccccccccccccccc,
                                    d = dddddddddddddddddddd;
aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,
                                     *c = ccccccccccccccccccc,
                                      *d = ddddddddddddddddddd;

After:
aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,
          c = cccccccccccccccccccc, d = dddddddddddddddddddd;
aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,
          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;

llvm-svn: 178860
2013-04-05 09:38:50 +00:00
Daniel Jasper 6daabe3716 Fix bug discovered with address sanitizer.
Now, this works again with an empty stack.

llvm-svn: 178779
2013-04-04 19:31:00 +00:00
Daniel Jasper a628c98bd3 Improve formatting of for loops and multi-variable DeclStmts.
This combines several related changes:
a) Don't break before after the variable types in for loops with a
   single variable.
b) Better indent DeclStmts defining multiple variables.

Before:
bool aaaaaaaaaaaaaaaaaaaaaaaaa =
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),
     bbbbbbbbbbbbbbbbbbbbbbbbb =
         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);
for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
         aaaaaaaaaaa = aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;
     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {
}

After:
bool aaaaaaaaaaaaaaaaaaaaaaaaa =
         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),
     bbbbbbbbbbbbbbbbbbbbbbbbb =
         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);
for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =
         aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;
     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {
}

llvm-svn: 178641
2013-04-03 13:36:17 +00:00
Alexander Kornienko b1be9d6e74 Even better way to handle comments adjacent to preprocessor directives.
Summary:
It turns out that we don't need to store CommentsBeforeNextToken in the
line state, but rather flush them before we start parsing preprocessor
directives. This fixes wrong comment indentation in code blocks in macro calls
(the test is included).

Reviewers: klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D617

llvm-svn: 178638
2013-04-03 12:38:53 +00:00
Daniel Jasper 5188e6b295 Cleanup, add comments and address review comments.
No functional changes.

llvm-svn: 178626
2013-04-03 07:21:51 +00:00
Daniel Jasper c238c87e12 Fix some inconsistent use of indentation.
Basically we have always special-cased the top-level statement of an
unwrapped line (the one with ParenLevel == 0) and that lead to several
inconsistencies. All added tests were formatted in a strange way, for
example:

Before:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();
if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
            .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
                .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {
}

After:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();
if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {
}

llvm-svn: 178542
2013-04-02 14:33:13 +00:00
Alexander Kornienko b5dad75e38 Alternative handling of comments adjacent to preprocessor directives.
Summary: Store comments in ScopedLineState

Reviewers: klimek, djasper

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D609

llvm-svn: 178537
2013-04-02 13:04:06 +00:00
Daniel Jasper 6e42b1eb8b Improve formatting of function types.
Before: void * (*a)(int *, SomeType *);
After:  void *(*a)(int *, SomeType *);
llvm-svn: 178474
2013-04-01 17:13:26 +00:00
Alexander Kornienko efd98385c0 Fixed handling of comments before preprocessor directives.
Comments before preprocessor directives used to be stored with InPPDirective
flag set, which prevented correct comment splitting in this case. Fixed by
flushing comments before switching on InPPDirective. Added a new test and fixed
one of the existing tests.

llvm-svn: 178261
2013-03-28 18:40:55 +00:00
Alexander Kornienko fd433365e0 Insert extra new line before access specifiers.
Summary: Insert extra new line before access specifiers.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D581

llvm-svn: 178149
2013-03-27 17:08:02 +00:00
Alexander Kornienko ffd6d04a43 Split line comments
Summary:
Split line comments that exceed column limit + fixed leading whitespace
handling when splitting block comments.

Reviewers: djasper, klimek

Reviewed By: djasper

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D577

llvm-svn: 178133
2013-03-27 11:52:18 +00:00
Daniel Jasper dd9276e464 Better fix for r177725.
It turns out that

-foo;

can be an objective C method declaration. So instead of the previous
solution, recognize objective C methods only if we are in a declaration
scope.

llvm-svn: 177740
2013-03-22 16:55:40 +00:00
Daniel Jasper bc0fa39d69 Align comments to surrounding unformatted comments.
Before:
int a; // not formatted
// formatting this line only

After:
int a; // not formatted
       // formatting this line only

This makes clang-format stable independent of whether the whole
file or single lines are formatted in most cases.

llvm-svn: 177739
2013-03-22 16:25:51 +00:00
Daniel Jasper 399d1ee5a0 More precisely recognize ObjC method declarations.
Otherwise, +/- and the beginning of constants can be recognized
incorrectly.

Before:  #define A - 1
After:   #define A -1
llvm-svn: 177725
2013-03-22 10:44:43 +00:00
Daniel Jasper 5521365248 Make clang-format understand more line comments.
Apparently one needs to set LangOptions.LineComment.

Before "//* */" got reformatted to "/ /* */" as the lexer was returning
the token sequence (slash, comment). This could also lead to weird other
stuff, e.g. for people that like to using comments like:
//****************

llvm-svn: 177720
2013-03-22 10:01:29 +00:00
Alexander Kornienko 547a9f5264 Better block comment formatting.
Summary:
1. When splitting one-line block comment, use indentation and *s.
2. Remove trailing whitespace from all lines of a comment, not only the ones being splitted.
3. Add backslashes for all lines if a comment is used insed a preprocessor directive.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D557

llvm-svn: 177635
2013-03-21 12:28:10 +00:00
Alexander Kornienko 674be0a3da Support for pointers-to-members usage via .*
Summary: Added support for pointers-to-members usage via .* and a few tests.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D556

llvm-svn: 177537
2013-03-20 16:41:56 +00:00
Daniel Jasper 291f936351 Remove assertion that can be triggered on bad input.
clang-format can't do anything useful, so it should leave the remainder
of the line unchanged, but it should not assert/segfault.

llvm-svn: 177530
2013-03-20 15:58:10 +00:00
Daniel Jasper 1a32a61ad4 Fix infinite-loop in unwrapped line parser.
Discovered when accidentally formatting a python file :-).

llvm-svn: 177527
2013-03-20 15:12:38 +00:00
Daniel Jasper 66dc2ec30b Do not consider comments when adjusting to local indent style.
Before (when only reformatting "int b"):
int a; // comment
       // comment
       int b;

After:
int a; // comment
       // comment
int b;

This also fixes llvm.org/PR15433.

llvm-svn: 177524
2013-03-20 14:31:47 +00:00
Daniel Jasper aab220f307 Reduce penalty for breaks after "(" for functions with parameters.
Before:
  aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);
After:
  aaaaaaaaaaaaaaaaa(
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 177521
2013-03-20 13:53:11 +00:00
Daniel Jasper d1ae3588c6 Add extra indentation for multiline comparisons.
This seems to be generally more desired.

Before:
if (aaaaaaaa &&
    bbbbbbbb >
    cccccccc) {}
After:
if (aaaaaaaa &&
    bbbbbbbb >
        cccccccc) {}

Also: Some formatting cleanup on clang-format's files.
llvm-svn: 177514
2013-03-20 12:37:50 +00:00
Daniel Jasper a127512cb4 Don't remove all indentation when in #defines.
Otherwise, this can become hard to read.

Before: #define A \
        case 1:
After:  #define A \
           case 1:
llvm-svn: 177509
2013-03-20 10:23:53 +00:00
Daniel Jasper b8914dd471 Improve formatting of function types in template parameters.
Before: A<int * (int)>;
After:  A<int *(int)>;
llvm-svn: 177505
2013-03-20 09:53:18 +00:00
Daniel Jasper 2bd32ca92a Fix indentation for case: // comment.
Before:
switch (x) {
case 1:
    // Do amazing stuff
    {
  g();
  f();
}
}

After:
switch (x) {
case 1:
  // Do amazing stuff
  {
    g();
    f();
  }
}

llvm-svn: 177420
2013-03-19 18:33:58 +00:00
Alexander Kornienko afcef33de7 Split long lines in multi-line comments.
Summary: This is implementation for /* */ comments only.

Reviewers: djasper, klimek

Reviewed By: djasper

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D547

llvm-svn: 177415
2013-03-19 17:41:36 +00:00
Daniel Jasper 850677d94a Fix clang-format segfault.
When annotating "lines" starting with ":", clang-format would segfault.
This could actually happen in valid code, e.g.
  #define A :

llvm-svn: 177283
2013-03-18 12:50:26 +00:00
Daniel Jasper 9b33424d6f Improve formatting of chained calls.
clang-format already prevented sequences like:
  ...
  SomeParameter).someFunction(
  ...

as those are quite confusing. This failed on:
  ...
  SomeParameter).someFunction(otherFunction(
  ...

Fixed in this patch.

llvm-svn: 177157
2013-03-15 14:57:30 +00:00
Alexander Kornienko 79d6c72e0e Indent all lines in a multi-line comment by the same amount.
Summary:
Do this to avoid spoling nicely formatted multi-line comments (e.g.
with code examples or similar stuff).

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D544

llvm-svn: 177153
2013-03-15 13:42:02 +00:00
Alexander Kornienko dd8ed854a0 Multi-line comment alignment
Summary:
Aligns continuation lines of multi-line comments to the base
indentation level +1:
class A {
  /*
   * test
   */
  void f() {}
};

The first revision is work in progress. The implementation is not yet complete.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D541

llvm-svn: 177080
2013-03-14 16:10:54 +00:00
Daniel Jasper f38a0ace2d Slightly improve formatting of longer pipe statements.
The stronger binding of a string ending in :/= does not really make
sense if it is the only character.

Before:
llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa
             << "=" << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;

After:
llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << "="
             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;

llvm-svn: 177075
2013-03-14 14:00:17 +00:00
Daniel Jasper 40aacf4872 Basic support for formatting asm() statments.
llvm-svn: 177073
2013-03-14 13:45:21 +00:00
Daniel Jasper ae9076457e Fix dereference formatting in for-loops.
Before: for (char **a = b; * a; ++a) {}
After:  for (char **a = b; *a; ++a) {}
llvm-svn: 177037
2013-03-14 10:50:25 +00:00
Daniel Jasper bf4755bb28 Improve formatting of trailing annotations.
Before:
bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((
    unused));

After:
bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    __attribute__((unused));

llvm-svn: 177034
2013-03-14 09:50:46 +00:00
Daniel Jasper 8a68b95d9e Fix incorrect cast identification.
Before: int a = sizeof(int *)+ b;"
After:  int a = sizeof(int *) + b;
llvm-svn: 176957
2013-03-13 17:13:53 +00:00
Daniel Jasper 0f8ed9e4e1 Fix comment indentation before labels.
Before:
switch (x) {
  // if 1, do f()
case 1:
  f();
}

After:
switch (x) {
// if 1, do f()
case 1:
  f();
}

llvm-svn: 176953
2013-03-13 15:53:12 +00:00
Daniel Jasper 8f6ae19129 Fix formatting issue with builder-type calls.
Before:
->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() - aaaaaaaaa()->aaaaaa()
                                                             ->aaaaa());

After:
a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() -
                         aaaaaaaaa()->aaaaaa()->aaaaa());

llvm-svn: 176952
2013-03-13 15:37:48 +00:00
Alexander Kornienko 62b85b9610 Added AnnotatedToken::isOneOf + a few other refactorings
Summary: <subj>

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D536

llvm-svn: 176951
2013-03-13 14:41:29 +00:00
Daniel Jasper 97b894849e Fix formatting of new arrays of pointers.
Before:
A = new SomeType * [Length];
A = new SomeType *[Length]();

After:
A = new SomeType *[Length];
A = new SomeType *[Length]();

Small formatting cleanups with clang-format.

llvm-svn: 176936
2013-03-13 07:49:51 +00:00
Alexander Kornienko a5151271e6 Implemented formatting of rvalue references
Summary:
Handle "&&" usage as rvalue reference, added tests and fixed incorrect
tests that interfere with this feature.

http://llvm.org/bugs/show_bug.cgi?id=15051

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D531

llvm-svn: 176874
2013-03-12 16:28:18 +00:00
Daniel Jasper 181046566c Remove bad space after "default".
Before:
switch (x) {
default : {}
}

After:
switch (x) {
default: {}
}

llvm-svn: 176861
2013-03-12 12:26:55 +00:00
Manuel Klimek 5085d9b275 Fixes breaking of string literals.
1. We now ignore all non-default string literals, including raw
literals.
2. We do not break inside escape sequences any more.

FIXME: We still break in trigraphs.
llvm-svn: 176710
2013-03-08 18:59:48 +00:00
Daniel Jasper f71cf3bd3e Remove unncessary whitespace when triggered on empty line.
With the cursor located at "I", clang-format would not do anything to:

int a;

   I

  int b;

With this patch, it reduces the number of empty lines as necessary, and
removes unnecessary whitespace. It does not change/reformat "int a;" or
"int b;".

llvm-svn: 176650
2013-03-07 20:50:00 +00:00
Manuel Klimek abf6e03bc1 Make sure to not split string literals at the first character.
llvm-svn: 176447
2013-03-04 20:03:38 +00:00
Daniel Jasper 973c9420e1 Format a line if a range in its leading whitespace was selected.
With [] marking the selected range, clang-format invoked on

    [  ]   int a;

Would so far not reformat anything. With this patch, it formats a
line if its leading whitespace is touched.

llvm-svn: 176435
2013-03-04 13:43:19 +00:00
Daniel Jasper a79064a88f Remove whitespace at end of file.
This fixes the rest of llvm.org/PR15062.

llvm-svn: 176361
2013-03-01 18:11:39 +00:00
Daniel Jasper 8eb371b3cc Correctly format arrays of pointers and function types.
Before:
void f(Type(*parameter)[10]) {}
int(*func)(void *);

After:
void f(Type (*parameter)[10]) {}
int (*func)(void *);

llvm-svn: 176356
2013-03-01 17:13:29 +00:00
Daniel Jasper f9a84b5f57 Normal indent for last element of builder-type call.
In builder type call, we indent to the laster function calls.
However, for the last element of such a call, we don't need to do
so, as that normally just wastes space and does not increase
readability.

Before:
aaaaaa->aaaaaa->aaaaaa( // break
                  aaaaaa);
aaaaaaaaaaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaa
    ->aaaaaaaaaaaaaaaaaaaaaaaaaa(
        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
aaaaaa->aaaaaa->aaaaaa( // break
    aaaaaa);
aaaaaaaaaaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 176352
2013-03-01 16:48:32 +00:00
Daniel Jasper 3324cbefcd Remove trailing whitespace of line comments.
This fixed llvm.org/PR15378.

llvm-svn: 176351
2013-03-01 16:45:59 +00:00
Manuel Klimek e317d1b1e8 Implements breaking string literals at slashes.
We now break at a slash if we do not find a space to break on.

Also fixes a bug where we would go over the limit when breaking the
second line.

llvm-svn: 176350
2013-03-01 13:29:19 +00:00
Manuel Klimek b176cff89d Implement fallback split point for string literals.
If we don't find a natural split point (currently space) in a string
literal protruding over the line, we just split at the last possible
point.

llvm-svn: 176349
2013-03-01 13:14:08 +00:00
Daniel Jasper a400cab43a Reduce penalty for splitting after "{" in static initializers.
This fixes llvm.org/PR15379.

Before:
const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = { 0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x00,                  // comment
                                            0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x00,                  // comment
                                            0x00, 0x00, 0x00, 0x00 // comment
};

After:
const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment
  0x00, 0x00, 0x00, 0x00              // comment
};

llvm-svn: 176262
2013-02-28 15:04:12 +00:00
Daniel Jasper 9a23be7451 Dont break between (( in __attribute__((.
Before:
void aaaaaaaaaaaaaaaaaa() __attribute__(
    (aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaa,
     aaaaaaaaaaaaaaaaaaaaaaaaa));

After:
void aaaaaaaaaaaaaaaaaa()
    __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaa,
                   aaaaaaaaaaaaaaaaaaaaaaaaa));

llvm-svn: 176260
2013-02-28 14:44:25 +00:00
Daniel Jasper ff6c3a9525 No spaces around pointers to members.
Before: (a ->* f)()
After:  (a->*f)()
llvm-svn: 176252
2013-02-28 13:40:17 +00:00
Daniel Jasper c22f5b4abb Improve formatting of #defines.
Two improvements:
1) Always leave at least one space before "\". Otherwise is can look bad
   and there is a risk of unwillingly joining to characters to a different
   token.
2) Use the full column limit for single-line #defines.
   Fixes llvm.org/PR15148

llvm-svn: 176245
2013-02-28 11:05:57 +00:00
Daniel Jasper 57d4a5821d Fix bug when formatting "A<A<A>>".
Before:
A<A<A>> ReadKansas(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,
                     int aaaaaaaaaaaaaaaaaaaaaaa);
Before:
A<A<A>> ReadKansas(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,
                   int aaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 176244
2013-02-28 10:06:05 +00:00
Daniel Jasper ead41b6b8f Fix incorrect recognition of bin-packing.
Before (in Google style):
Constructor()
    : aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(
          aaaaaa) {}

After:
Constructor()
    : aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa) {}

llvm-svn: 176242
2013-02-28 09:39:12 +00:00
Daniel Jasper d8ffcfa9b8 Fix spacing after binary operator as macro parameter.
Before: COMPARE(a, == , b);
After:  COMPARE(a, ==, b);
llvm-svn: 176241
2013-02-28 09:21:10 +00:00
Daniel Jasper 8e55927153 Fix formatting of multiplications in array subscripts.
Before:
a[a* a] = 1;

After:
a[a * a] = 1;

llvm-svn: 176180
2013-02-27 11:43:50 +00:00
Daniel Jasper 2cf17bfcc1 Enable bin-packing in Google style.
After some discussions, it seems that this is the better path in
the long run. Does not change Chromium style, as there, bin packing
is forbidden by the style guide.

Also fix two minor bugs wrt. formatting:
1. If a call parameter is a function call itself and is split before
   the "." or "->", split before the next parameter.
2. If a call parameter is string literal that has to be split onto
   two lines, split before the next parameter.

llvm-svn: 176177
2013-02-27 09:47:53 +00:00
Daniel Jasper 70bc87420a Fix bad line break decision.
Before:
if (Intervals[i].getRange().getFirst() < Intervals[i - 1]
                                             .getRange().getLast()) {}

After:
if (Intervals[i].getRange().getFirst() <
    Intervals[i - 1].getRange().getLast()) {}

llvm-svn: 176092
2013-02-26 13:59:14 +00:00
Daniel Jasper 16b3562f00 In range-based for-loops, prefer splitting after ":".
Before:
for (const aaaaaaaaaaaaaaaaaaaaa &
         aaaaaaaaa : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}

After:
for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}

llvm-svn: 176087
2013-02-26 13:18:08 +00:00
Daniel Jasper fb5e241183 Only keep empty lines in unwrapped lines if they preceed a line comment.
Empty lines followed by line comments are often used to highlight the
comment. Empty lines somewhere else are usually left over from manual or
automatic formatting and should probably be removed.

Before (clang-format would keep):
S s = {
  a,

  b
};

After:
S s = { a, b };

llvm-svn: 176086
2013-02-26 13:10:34 +00:00
Daniel Jasper 5497fce41c Only break string literals as a last resort.
We might want to move towards doing this if the formatting can be
significantly improved, but we need to carefully evaluate the different
situations first.

Before (the string literal was split by clang-format here):
aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaa("aaa aaaaa aaa aaa aaaaa aaa "
                                                  "aaaaa aaa aaa aaaaaa"));

After:
aaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaa,
    aaaaaa("aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa"));

llvm-svn: 176084
2013-02-26 12:52:34 +00:00
Daniel Jasper 62e681744c Re-add hack that caused regression.
This fixes llvm.org/PR15350.

Before:
Constructor(int Parameter = 0)
    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),
                aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}

After:
Constructor(int Parameter = 0)
    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),
      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}

I think the correct solution is to put the VariablePos into
ParenState, not LineState. Added FIXME.

llvm-svn: 176027
2013-02-25 15:59:54 +00:00
Daniel Jasper 26d1b1db23 Allow breaking between a type and name in variable declarations.
This fixes llvm.org/PR14967 and is generall necessary to avoid
situations where the column limit is exceeded. The challenge is
restricting such lines splits, otherwise clang-format suddenly starts
breaking at bad places.

Before:
ReallyLongReturnType<TemplateParam1, TemplateParam2>
ReallyReallyLongFunctionName(
    const std::string &SomeParameter,
    const SomeType<string,
                   SomeOtherTemplateParameter> &ReallyReallyLongParameterName,
    const SomeType<string,
                   SomeOtherTemplateParameter> &AnotherLongParameterName) {}

After:
ReallyLongReturnType<TemplateParam1, TemplateParam2>
ReallyReallyLongFunctionName(
    const std::string &SomeParameter,
    const SomeType<string, SomeOtherTemplateParameter> &
        ReallyReallyLongParameterName,
    const SomeType<string, SomeOtherTemplateParameter> &
        AnotherLongParameterName) {}

llvm-svn: 175999
2013-02-24 18:54:32 +00:00
Daniel Jasper cd8599e8c9 Better formatting of conditional expressions.
In conditional expressions, if the condition is split over multiple
lines, also break before both operands.

This prevents formattings like:

  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ? b : c;

Which are bad, because they suggestion incorrect operator precedence:

  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==
      (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ? b : c);

This lead to the discovery that the expression parser incorrectly
handled conditional operators and that it could also handle semicolons
(which in turn reduced the amount of special casing for for-loops). As a
side-effect, we can now apply the bin-packing configuration to the
sections of for-loops.

llvm-svn: 175973
2013-02-23 21:01:55 +00:00
Daniel Jasper ba0bda9739 Don't recognize unnamed pointer parameters as casts.
This fixes llvm.org/PR15061.

Before: virtual void f(int *)const;
After:  virtual void f(int *) const;
llvm-svn: 175960
2013-02-23 08:07:18 +00:00
Daniel Jasper af5ba0ed8c Allow splitting between string literals and identifiers.
Also don't break in long include directives as that is not desired.

We can now format:

  #include "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
  #define LL_FORMAT "ll"
  printf("aaaaa: %d, bbbbbbbbb: %" LL_FORMAT "d, cccccccc: %" LL_FORMAT
         "d, ddddddddd: %" LL_FORMAT "d\n");

Before, this led to weird results.

llvm-svn: 175959
2013-02-23 07:46:38 +00:00
Daniel Jasper d15b78b921 Remove accidentally introduced no-op line.
Was used during experiments, but another if-statements a few lines
before makes it (intentionally) useless.

llvm-svn: 175803
2013-02-21 21:40:48 +00:00
Daniel Jasper 12ef4e59ef Consistently put {} onto the same line for empty functions.
This fixes llvm.org/PR15167.

Before:
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL()
    : AAAAAAAA(10), BBBBBBBBB(10) {
}
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL() : AAAAAAAA(10) {}

After:
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL()
    : AAAAAAAA(10), BBBBBBBBB(10) {}
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL() : AAAAAAAA(10) {}

llvm-svn: 175800
2013-02-21 21:33:55 +00:00
Daniel Jasper 37905f711c Allow breaking between type and name in for loops.
This fixes llvm.org/PR15033.

Also: Always break before a parameter, if the previous parameter was
split over multiple lines. This was necessary to make the right
decisions in for-loops, almost always makes the code more readable and
also fixes llvm.org/PR14873.

Before:
for (llvm::ArrayRef<NamedDecl *>::iterator I = FD->getDeclsInPrototypeScope()
         .begin(), E = FD->getDeclsInPrototypeScope().end();
     I != E; ++I) {
}
foo(bar(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
        ccccccccccccccccccccccccccccc), d, bar(e, f));

After:
for (llvm::ArrayRef<NamedDecl *>::iterator
         I = FD->getDeclsInPrototypeScope().begin(),
         E = FD->getDeclsInPrototypeScope().end();
     I != E; ++I) {
}
foo(bar(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
        ccccccccccccccccccccccccccccc),
    d, bar(e, f));

llvm-svn: 175741
2013-02-21 15:00:29 +00:00
Manuel Klimek 0c91571d33 Fix regression in string literal alignment.
Now correctly indents (again):
a = a + "a"
        "a"
        "a";

llvm-svn: 175630
2013-02-20 15:32:58 +00:00
Manuel Klimek 02f640a3ab Fixes bug in string literal alignment.
We now indent the following correctly:
1. some + "literal" /* comment */
          "literal";
2. breaking string literals after which we have another string literal.

llvm-svn: 175628
2013-02-20 15:25:48 +00:00
Daniel Jasper dc7d5817e2 Don't remove blank lines within unwrapped lines.
If the code author decides to put empty lines anywhere into the code we
should treat them equally, i.e. reduce them to the configured
MaxEmptyLinesToKeep.

With this change, we e.g. keep the newline in:
SomeType ST = {
  // First value
  a,

  // Second value
  b
};

llvm-svn: 175620
2013-02-20 12:56:39 +00:00
Manuel Klimek 1998ea2c7e Implements breaking of string literals if they stick out.
An alternative strategy to calculating the break on demand when hitting
a token that would need to be broken would be to put all possible breaks
inside the token into the optimizer.

Currently only supports breaking at spaces; more break points to come.

llvm-svn: 175613
2013-02-20 10:15:13 +00:00
Daniel Jasper 6db1b7ca16 Add missing clang-format null pointer check..
.. and a test that triggers it in valid albeit questionable code.

llvm-svn: 175554
2013-02-19 20:05:41 +00:00
Daniel Jasper 0047596cb0 Correctly format macro with unfinished template declaration.
We can now format:
  #define A template <typename T>

Before this created a segfault :-/.

llvm-svn: 175533
2013-02-19 17:14:38 +00:00
Daniel Jasper 58f427ee41 Fix bug in LineState comparison function.
The key bug was

  if (Other.StartOfLineLevel < StartOfLineLevel) ..

instead of

  if (Other.StartOfLineLevel != StartOfLineLevel) ..

Also cleaned up the function to be more consistent in the comparisons.

llvm-svn: 175500
2013-02-19 09:28:55 +00:00
Daniel Jasper e53beb2647 Improve indentation of builder type calls.
In builder-type calls, it can be very confusing to just indent
parameters from the start of the line. Instead, indent 4 from the
correct function call.

Before:
aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break
    aaaaaaaaaaaaaa);
aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()->aaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
    ->aaaaaaaaaaaaaaaaa();

After:
aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break
                                        aaaaaaaaaaaaaa);
aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()
    ->aaaaaaaaaaaaaaaa(
        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
    ->aaaaaaaaaaaaaaaaa();

llvm-svn: 175444
2013-02-18 13:52:06 +00:00
Daniel Jasper 9ed9ade0ef Improve formatting of builder-type calls.
Before:
aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaa(aaaaaaaaaaaaaaa);

After:
aaaaaaa->aaaaaaa
    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
    ->aaaaaaaa(aaaaaaaaaaaaaaa);

llvm-svn: 175441
2013-02-18 13:24:21 +00:00
Daniel Jasper 55d7ba6b66 Reformat lines if they were "moved around".
An unwrapped line can get moved around if there is no newline before
it and the previous line was formatted.

Example:

  template<typename T>  // Cursor is on this line when hitting "format"
  T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }

"return .." is the second unwrapped line in this scenario. I does not
touch any reformatted region. Thus, the result of formatting is:

  template <typename T> T *getFETokenInfo() const { return static_cast<T *>(FETokenInfo); }

After second format (and arguably desired end-result):

  template <typename T> T *getFETokenInfo() const {
      return static_cast<T *>(FETokenInfo);
  }

This fixes: llvm.org/PR15060.

llvm-svn: 175440
2013-02-18 13:08:03 +00:00
Daniel Jasper 5065bc4b2c Correctly determine */& usage in more cases.
This fixes llvm.org/PR15248.

Before:
Test::Test(int b) : a(b *b) {}
for (int i = 0; i < a *a; ++i) {}

After:
Test::Test(int b) : a(b * b) {}
for (int i = 0; i < a * a; ++i) {}

llvm-svn: 175439
2013-02-18 12:44:35 +00:00
Daniel Jasper 2ec3ffb86e Always break after multi-line string literals.
Otherwise, other parameters can be quite hidden.
Reformatted unittests/Format/FormatTest.cpp after this.

Before:
someFunction("Always break between multi-line"
             " string literals", and, other, parameters);

After:
someFunction("Always break between multi-line"
             " string literals",
             and, other, parameters);

llvm-svn: 175436
2013-02-18 11:59:17 +00:00
Daniel Jasper 40c36c54ca Prevent line breaks that make stuff hard to read.
Before:
aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa).aaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaa).aaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)
    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)
    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,
                         aaaaaaaaaaaaaaaaaaa,
                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 175432
2013-02-18 11:05:07 +00:00
Dmitri Gribenko 97499ed60e Use the correct type to hold enumeration values
llvm-svn: 175374
2013-02-16 20:03:26 +00:00
Daniel Jasper eb50c676ba Recognize < and > as binary expressions in builder-type calls.
The current heuristic assumes that there can't be binary operators in
builder-type calls (excluding assigments). However, it also excluded
< and > in general, which is wrong. Now they are only excluded if they
are template parameters.

Before:
return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa()i
       .aaaaaa() < aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();

After:
return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <
       aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();

llvm-svn: 175291
2013-02-15 20:33:06 +00:00
Daniel Jasper 0af92ebb20 Done break between 'operator' and '<<'.
Before:
ostream &operator
    <<(ostream &out, some::ns::SomeReallyLongType WithSomeReallyLongValue);

After:
ostream &operator<<(ostream &out,
                    some::ns::SomeReallyLongType WithSomeReallyLongValue);

llvm-svn: 175286
2013-02-15 19:24:08 +00:00
Daniel Jasper 23e8e0c7ea Re-enable ConstructorInitializerAllOnOneLineOrOnePerLine option.
This got lost and was untested as the same effect is achieved by
avoiding bin packing, which is active in Google style by default.
However, moving forward, we want more control over the bin packing
option(s) and thus, this flag should work as expected.

llvm-svn: 175277
2013-02-15 16:49:44 +00:00
Daniel Jasper 54a8602aef Prevent only breaking before "?" in conditional expressions.
This is almost always more readable.

Before:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaaaaaaaaaaaaaaaa;

After:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa
    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;

llvm-svn: 175262
2013-02-15 11:07:25 +00:00
Daniel Jasper e11095aff1 Fix counting of parameters so that r175162 works as expected.
Before:
aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()
                              .aaaaaaaaaaaaaaaaa());

After:
aaaaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());

Not sure which of the formattings above is better, but we should not pick
one by accident.

llvm-svn: 175165
2013-02-14 15:01:34 +00:00
Daniel Jasper 687af3bb53 Reduce penalty for breaking before ./-> after complex calls.
This gives a clearer separation of the context, e.g. in GMOCK
statements.

Before:
EXPECT_CALL(SomeObject,
            SomeFunction(Parameter)).WillRepeatedly(Return(SomeValue));

After:
EXPECT_CALL(SomeObject, SomeFunction(Parameter))
    .WillRepeatedly(Return(SomeValue));

Minor format cleanups.

llvm-svn: 175162
2013-02-14 14:26:07 +00:00
Daniel Jasper 2457010b1c Remove the trailing whitespace of formatted lines.
So far, clang-format has always assumed the whitespace belonging to the
subsequent token. This has the negative side-effect that when
clang-format formats a line, it does not remove its trailing whitespace,
as it belongs to the next token.

Thus, this patch fixes most of llvm.org/PR15062.

We are not zapping a file's trailing whitespace so far, as this does not
belong to any token we see during formatting. We need to fix this in a
subsequent patch.

llvm-svn: 175152
2013-02-14 09:58:41 +00:00
Daniel Jasper 66e9dee707 Get less confused by trailing comma in Google style.
The formatter can now format:
void aaaaaaaaaaaaaaaaaa(int level,
                        double *min_x,
                        double *max_x,
                        double *min_y,
                        double *max_y,
                        double *min_z,
                        double *max_z, ) {
}

Although this is invalid code, it frequently happens during development and
clang-format should be nicer :-).

llvm-svn: 175151
2013-02-14 09:19:04 +00:00
Daniel Jasper eead02b1b5 Align superclasses for multiple inheritence.
This fixes llvm.org/PR15179.

Before:
class ColorChooserMac : public content::ColorChooser,
    public content::WebContentsObserver {
};

After:
class ColorChooserMac : public content::ColorChooser,
                        public content::WebContentsObserver {
};

llvm-svn: 175147
2013-02-14 08:42:54 +00:00
Daniel Jasper b9caeacd02 Allow breaking after the return type in function declarations.
This has so far been disabled for Google style, but should be done
before breaking at nested name specifiers or in template parameters.

Before (in Google style):
template <typename T>
aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaaaaaaaa<
    T>::aaaaaaa() {}

After:
template <typename T>
aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>
aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}

llvm-svn: 175074
2013-02-13 20:33:44 +00:00
Daniel Jasper 525264c369 Fix comment alignment close to the column limit.
Due to an error in one of the expressions, we used to not align comments
although it would have been possible.

llvm-svn: 175068
2013-02-13 19:25:54 +00:00
Manuel Klimek af491072ee Pull search state out as class members.
Fix some comments.

llvm-svn: 175052
2013-02-13 10:54:19 +00:00
Manuel Klimek 2ef908e4e2 An attempt to make the search algorithm easier to understand.
- clear ownership: the SpecificBumpPtrAllocator owns all StateNodes
- this allows us to simplify the memoization data structure into a
  std::set (FIXME: figure out whether we want to use a hash based
  data structure).
- introduces StateNode as recursive data structure, instead of using
  Edge and the Seen-map combined to drill through the graph
- using a count to stabilize the penalty instead of relying on the
  container
- pulled out a method to forward-apply states in the end

This leads to a ~40% runtime decrease on Nico's benchmark.

Main FiXME is that the parameter lists of some function get too long.
I'd vote for either pulling the Queue etc into the Formatter proper,
or creating an inner class just for the search algorithm.

llvm-svn: 175051
2013-02-13 10:46:36 +00:00
Nico Weber c6fe2165c9 Formatter: Refactor the cast detection code to be a bit more readable.
No functionality change. Also add another cast test.

llvm-svn: 175029
2013-02-13 04:13:13 +00:00
Nico Weber a789239c64 Formatter: Detect ObjC method expressions after casts.
Not all casts are correctly detected yet, but it helps in some cases.

llvm-svn: 175028
2013-02-13 03:48:27 +00:00
Dmitri Gribenko 64bbf7e5f3 Replace 'signed' with 'int'. 'signed' is not typical for LLVM style
llvm-svn: 175015
2013-02-12 22:40:22 +00:00
Daniel Jasper f52ab8d60c Fix crash for incomplete labels in macros.
Still the formatting can be improved, but at least we don't assert any
more. This happened when trying to format lib/Sema/SemaType.cpp.

llvm-svn: 175003
2013-02-12 20:17:17 +00:00
Aaron Ballman 396088cdb5 Fixing the MSVC compiler warning a different way; removed use of static_cast and instead used a signed integer parameter.
llvm-svn: 174996
2013-02-12 19:20:48 +00:00
Aaron Ballman cd9e4e6063 Removing a signed/unsigned mismatch warning triggered in MSVC 11.
llvm-svn: 174986
2013-02-12 18:39:15 +00:00
Daniel Jasper 2204562acd Fix bug in the adjustment to existing lines.
Before (if only the second line was reformatted):
void f() {}
          void g() {}

After:
void f() {}
void g() {}

llvm-svn: 174978
2013-02-12 16:51:23 +00:00
Nico Weber 4444917f5c Formatter: Correctly format stars in `sizeof(int**)` and similar places.
This redoes how '*' and '&' are classified as pointer / reference markers when
followed by ')', '>', or ','.

Previously, determineStarAmpUsage() marked a single '*' and '&' followed by
')', '>', or ',' as pointer or reference marker. Now, all '*'s and '&'s
preceding ')', '>', or ',' are marked as pointer / reference markers. Fixes
PR14884.

Since only the last '*' in 'int ***' was marked as pointer before (the rest
were unary operators, which don't reach spaceRequiredBetween()),
spaceRequiredBetween() now had to be thought about handing multiple '*'s in
sequence.

Before:
  return sizeof(int * *);
  Type **A = static_cast<Type * *>(P);

Now:
  return sizeof(int**);
  Type **A = static_cast<Type **>(P);

While here, also make all methods of AnnotatingParser except parseLine()
private.

Review URL: http://llvm-reviews.chandlerc.com/D384

llvm-svn: 174975
2013-02-12 16:17:07 +00:00
Nico Weber 29f9dea1ab Formatter: Detect ObjC message expressions after 'in' in loop
Before:
  for (id foo in[self getStuffFor : bla]) {
  }

Now:
  for (id foo in [self getStuffFor:bla]) {
  }

"in" is treated as loop keyword if the line starts with "for", and as a
regular identifier else. To check for "in", its IdentifierInfo is handed
through a few layers.

llvm-svn: 174889
2013-02-11 15:32:15 +00:00
Manuel Klimek 2549956ee3 Get rid of manual debug output, now that the test runner supports it.
You can run tests with -debug instead now.

llvm-svn: 174880
2013-02-11 12:37:30 +00:00
Daniel Jasper eef30490fd Fix invalid formatting with spaces before trailing comments.
In google style, trailing comments are separated by two spaces. This
patch fixes the counting of these spaces and prevents clang-format from
creating a line with 81 columns.

llvm-svn: 174879
2013-02-11 12:36:37 +00:00
Manuel Klimek 0c13795f68 Fixes handling of empty lines in macros.
Now correctly formats:
 #define A \
   \
   b;
to
 #define A b;

Added the state whether an unwrapped line is a macro to the debug
output.

llvm-svn: 174878
2013-02-11 12:33:24 +00:00