Simplify RstContentCreator

Import and use ViewList & textwrap directly instead of going through a
layer of indirection. I initially did stuff like this out of a belief
that it made it more testable as it was easy to mock out the stuff being
passed in. However I haven't written any tests and even if I did, I
wouldn't mock 'dedent'.

For #236

breathe/directives.py

@@ -17,7 +17,6 @@
 from .project import ProjectInfoFactory, ProjectError
 
 from docutils.parsers.rst.directives import unchanged_required, unchanged, flag
-from docutils.statemachine import ViewList
 from sphinx.domains import cpp, c, python
 from sphinx.writers.text import TextWriter
 from sphinx.builders.text import TextBuilder
@@ -29,7 +28,6 @@
 import os
 import fnmatch
 import re
-import textwrap
 import collections
 import subprocess
 
@@ -867,7 +865,7 @@ def setup(app):
     math_nodes.displaymath = sphinx.ext.mathbase.displaymath
     node_factory = NodeFactory(docutils.nodes, sphinx.addnodes, math_nodes)
 
-    rst_content_creator = RstContentCreator(ViewList, textwrap.dedent)
+    rst_content_creator = RstContentCreator()
     renderer_factory_creator_constructor = DoxygenToRstRendererFactoryCreatorConstructor(
         node_factory,
         parser_factory,

breathe/renderer/__init__.py

@@ -1,29 +1,26 @@
 
+import textwrap
+
 from .base import Renderer
 from . import index as indexrenderer
 from . import compound as compoundrenderer
 
 from docutils import nodes
-import textwrap
+from docutils.statemachine import ViewList
 
 
 class RstContentCreator(object):
 
-    def __init__(self, list_type, dedent):
-
-        self.list_type = list_type
-        self.dedent = dedent
-
     def __call__(self, text):
 
         # Remove the first line which is "embed:rst[:leading-asterisk]"
         text = "\n".join(text.split(u"\n")[1:])
 
         # Remove starting whitespace
-        text = self.dedent(text)
+        text = textwrap.dedent(text)
 
         # Inspired by autodoc.py in Sphinx
-        result = self.list_type()
+        result = ViewList()
         for line in text.split("\n"):
             result.append(line, "<breathe>")