[clang-format] Add SpaceBeforeColon option

Summary:
When disabled, this option allows removing the space before colon,
making it act more like the semi-colon. When enabled (default), the
current behavior is not affected.

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

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

Reviewers: krasimir, djasper

Reviewed By: djasper

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

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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@326426 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 0 deletions

diff --git a/docs/ClangFormatStyleOptions.rst b/docs/ClangFormatStyleOptions.rst
index ea43f19a3c..1ddcce8b7a 100644
--- a/docs/ClangFormatStyleOptions.rst
+++ b/docs/ClangFormatStyleOptions.rst
@@ -1681,6 +1681,23 @@ the configuration (without a prefix: ``Auto``).
      int a = 5;                     vs.     int a=5;
      a += 42                                a+=42;
 
+**SpaceBeforeCtorInitializerColon** (``bool``)
+  If ``false``, spaces will be removed before constructor initializer
+  colon.
+
+  .. code-block:: c++
+
+     true:                                  false:
+     Foo::Foo() : a(a) {}                   Foo::Foo(): a(a) {}
+
+**SpaceBeforeInheritanceColon** (``bool``)
+  If ``false``, spaces will be removed before inheritance colon.
+
+  .. code-block:: c++
+
+     true:                                  false:
+     class Foo : Bar {}             vs.     class Foo: Bar {}
+
 **SpaceBeforeParens** (``SpaceBeforeParensOptions``)
   Defines in which cases to put a space before opening parentheses.
 
@@ -1725,6 +1742,15 @@ the configuration (without a prefix: ``Auto``).
 
 
 
+**SpaceBeforeRangeBasedForLoopColon** (``bool``)
+  If ``false``, spaces will be removed before range-based for loop
+  colon.
+
+  .. code-block:: c++
+
+     true:                                  false:
+     for (auto v : values) {}       vs.     for(auto v: values) {}
+
 **SpaceInEmptyParentheses** (``bool``)
   If ``true``, spaces may be inserted into ``()``.