[clang-format] Update dump_format_style.py to indent nested fields

Summary:
This updates the format options documentation script to indent the
documentation of nested fields. The previous format caused some problems,
as when a bulleted list ends with a multiline comment. See the buildbot failure
http://lab.llvm.org:8011/builders/clang-sphinx-docs/builds/10020/steps/docs-clang-html/logs/stdio

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D34552

llvm-svn: 306093

clang/docs/ClangFormatStyleOptions.rst

@@ -538,158 +538,158 @@ the configuration (without a prefix: ``Auto``).
 
   * ``bool AfterClass`` Wrap class definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    class foo {};
+      true:
+      class foo {};
 
-    false:
-    class foo
-    {};
+      false:
+      class foo
+      {};
 
   * ``bool AfterControlStatement`` Wrap control statements (``if``/``for``/``while``/``switch``/..).
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    if (foo())
-    {
-    } else
-    {}
-    for (int i = 0; i < 10; ++i)
-    {}
+      true:
+      if (foo())
+      {
+      } else
+      {}
+      for (int i = 0; i < 10; ++i)
+      {}
 
-    false:
-    if (foo()) {
-    } else {
-    }
-    for (int i = 0; i < 10; ++i) {
-    }
+      false:
+      if (foo()) {
+      } else {
+      }
+      for (int i = 0; i < 10; ++i) {
+      }
 
   * ``bool AfterEnum`` Wrap enum definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    enum X : int
-    {
-      B
-    };
+      true:
+      enum X : int
+      {
+        B
+      };
 
-    false:
-    enum X : int { B };
+      false:
+      enum X : int { B };
 
   * ``bool AfterFunction`` Wrap function definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    void foo()
-    {
-      bar();
-      bar2();
-    }
+      true:
+      void foo()
+      {
+        bar();
+        bar2();
+      }
 
-    false:
-    void foo() {
-      bar();
-      bar2();
-    }
+      false:
+      void foo() {
+        bar();
+        bar2();
+      }
 
   * ``bool AfterNamespace`` Wrap namespace definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    namespace
-    {
-    int foo();
-    int bar();
-    }
+      true:
+      namespace
+      {
+      int foo();
+      int bar();
+      }
 
-    false:
-    namespace {
-    int foo();
-    int bar();
-    }
+      false:
+      namespace {
+      int foo();
+      int bar();
+      }
 
   * ``bool AfterObjCDeclaration`` Wrap ObjC definitions (``@autoreleasepool``, interfaces, ..).
 
   * ``bool AfterStruct`` Wrap struct definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    struct foo
-    {
-      int x;
-    };
+      true:
+      struct foo
+      {
+        int x;
+      };
 
-    false:
-    struct foo {
-      int x;
-    };
+      false:
+      struct foo {
+        int x;
+      };
 
   * ``bool AfterUnion`` Wrap union definitions.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    union foo
-    {
-      int x;
-    }
+      true:
+      union foo
+      {
+        int x;
+      }
 
-    false:
-    union foo {
-      int x;
-    }
+      false:
+      union foo {
+        int x;
+      }
 
   * ``bool BeforeCatch`` Wrap before ``catch``.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    try {
-      foo();
-    }
-    catch () {
-    }
+      true:
+      try {
+        foo();
+      }
+      catch () {
+      }
 
-    false:
-    try {
-      foo();
-    } catch () {
-    }
+      false:
+      try {
+        foo();
+      } catch () {
+      }
 
   * ``bool BeforeElse`` Wrap before ``else``.
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    true:
-    if (foo()) {
-    }
-    else {
-    }
+      true:
+      if (foo()) {
+      }
+      else {
+      }
 
-    false:
-    if (foo()) {
-    } else {
-    }
+      false:
+      if (foo()) {
+      } else {
+      }
 
   * ``bool IndentBraces`` Indent the wrapped braces themselves.
 
   * ``bool SplitEmptyFunctionBody`` If ``false``, empty function body can be put on a single line.
-  This option is used only if the opening brace of the function has
-  already been wrapped, i.e. the `AfterFunction` brace wrapping mode is
-  set, and the function could/should not be put on a single line (as per
-  `AllowShortFunctionsOnASingleLine` and constructor formatting options).
+    This option is used only if the opening brace of the function has
+    already been wrapped, i.e. the `AfterFunction` brace wrapping mode is
+    set, and the function could/should not be put on a single line (as per
+    `AllowShortFunctionsOnASingleLine` and constructor formatting options).
 
-  .. code-block:: c++
+    .. code-block:: c++
 
-    int f()   vs.   inf f()
-    {}              {
-                    }
+      int f()   vs.   inf f()
+      {}              {
+                      }
 
 
 **BreakAfterJavaFieldAnnotations** (``bool``)

clang/docs/tools/dump_format_style.py

@@ -24,10 +24,10 @@ def doxygen2rst(text):
   text = re.sub(r'\\\w+ ', '', text)
   return text
 
-def indent(text, columns):
+def indent(text, columns, indent_first_line=True):
   indent = ' ' * columns
   s = re.sub(r'\n([^\n])', '\n' + indent + '\\1', text, flags=re.S)
-  if s.startswith('\n'):
+  if not indent_first_line or s.startswith('\n'):
     return s
   return indent + s
 
@@ -64,7 +64,9 @@ class NestedField:
     self.comment = comment.strip()
 
   def __str__(self):
-    return '\n* ``%s`` %s' % (self.name, doxygen2rst(self.comment))
+    return '\n* ``%s`` %s' % (
+        self.name,
+        doxygen2rst(indent(self.comment, 2, indent_first_line=False)))
 
 class Enum:
   def __init__(self, name, comment):
@@ -179,7 +181,7 @@ def read_options(header):
       if enums.has_key(option.type):
         option.enum = enums[option.type]
       elif nested_structs.has_key(option.type):
-        option.nested_struct = nested_structs[option.type];
+        option.nested_struct = nested_structs[option.type]
       else:
         raise Exception('Unknown type: %s' % option.type)
   return options
@@ -195,4 +197,3 @@ contents = substitute(contents, 'FORMAT_STYLE_OPTIONS', options_text)
 
 with open(DOC_FILE, 'wb') as output:
   output.write(contents)
-