Mostly done using the following ruby script:
Dir.glob('**/*.cpp').each { |file|
  next if file =~ %r{src/shared/qbs|/qmljs/}
  s = File.read(file)
  s.scan(/^using namespace (.*);$/) {
    ns = $1
    t = s.gsub(/^(.*)\b#{ns}::((?!Const)[A-Z])/) { |m|
      before = $1
      char = $2
      if before =~ /"|\/\/|\\|using|SIGNAL|SLOT|Q_/
        m
      else
        before + char
      end
    }
    if t != s
      puts file
      File.open(file, 'w').write(t)
    end
  }
}

Change-Id: I6fbe13ddc1485efe95c3156097bf41d90c0febac
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

Change-Id: I4852ff215abf25649fc5eac1e922ae901839ca3d
Reviewed-by: hjk <hjk@theqtcompany.com>

...and related functions. For clarity in client code.

Change-Id: Icad6fc7b1eee2ce46a2eba8435359837a23409c8
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

Change-Id: I85f7398aee59d0d36f0e5c3bf88ff3c96002e394
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

Instead, always write into a unique temporary directory in
QDir::tempPath().

Where applicable, read the test source from files instead of first
writing the file.

Some clean ups in test_codegen*.

Change-Id: Id48dc50c6ca16252edfd9fc8a86ba0de9f9be486
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

The GenericProjectManager tests left over some state in CppModelManager.

Change-Id: I3f5c5bf27b9443e6753eb6c24114e2e5b99e7372
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

The test was broken since the QmakeProject was changed to work
asynchronously.

FAIL!  : CppTools::Internal::CppToolsPlugin::test_modelmanager_extraeditorsupport_uiFiles() Compared values are not the same
   Actual   (workingCopy.size()): 1
   Expected (2)                 : 2

Change-Id: I6f7d05fb70af3def5fc371a9783b606309686e32
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

...instead of going through CppModelManager::projectInfo().

Now CppModelManager::projectInfo() returns an invalid ProjectInfo in
case there is no valid data for the given Project.

Change-Id: I11908bf2ddf865b1d3d71ff176eaf4139292b21c
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

... by keying on Utils::FileName

Task-number: QTCREATORBUG-12390
Change-Id: Ia1a59d2e422b4f92300ac6a8e0e52dd7456a6e70
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

...since this will confuse the completer.

Task-number: QTCREATORBUG-13567
Change-Id: I4172d433f23f3907690d4c00f92fadb68fa354e8
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

...if the project was updated in the meanwhile.

If a project is updated mark invisible editor documents dirty and update
them if they get focus.

This also fixes document highlighting when restoring a session for
documents that the user "switched away" before the project info is
pushed to CppModelManager.

This completes

    CppTools: Update visible documents on project update
    commit c2eb91e0

which only takes care of visible documents.

Task-number: QTCREATORBUG-13270
Change-Id: Id445e7f509deac5d03194aecc54ce4629b7926ce
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

This fixes a crash if the include hierarchy sidebar is invoked with the
clang code model. BuiltinEditorDocumentParser::get(editorFilePath)
returns 0 in that case.

Task-number: QTCREATORBUG-13553
Change-Id: I9292691c8156bdaaffcac1c3864201ba8a6cbdef
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

Faster.

Change-Id: I91aa67462e11ff3258600d7f158de79942d0dc81
Reviewed-by: Marc Reilly <marc.reilly@gmail.com>
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

Superseded by commit

    commit 89bd4ee3
    C++: Base parsing on editor document instead of widget

Change-Id: Iffa6e47bddc0fa3de1eab9b65fe8f711520d2d7f
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

Change-Id: I3c22ef2685d7aa589f5d0ab74d693653a4c32082
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

Change-Id: I19c423dd9f6cbaecbaa925df0090af001b951601
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

Change-Id: Ie6aaaa5d99ba3823d9d42331f45b2dcab397e1cd
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

Adjust caller sites and surroundings.

Change-Id: I6c3c80e42f35eabedc1f89c8c42cca1025aca12f
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

Replace the CppModelManagerInterface/derived CppModelManager
combo by a more common CppModelManager/CppModelManagerPrivate
pimpl pattern.

Change-Id: Ia4582845ed94d5ef60b8571bab9b2260c6290287
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

.. because they now hold only files for a single language+extensions
combination.

Task-number: QTCREATORBUG-11709
Task-number: QTCREATORBUG-12818
Change-Id: If294f6de07d60126be733d98de12b89b8af3efce
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

So that recalculating the information is not O(n^2) but linear.

Change-Id: I69903e0b5ad321d071804d782ad634a3f300e71a
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

This eliminates a bunch of list->set->list conversions. Especially the
ProjectInfo::appendProjectPart takes lots of time converting for every
part added.

Change-Id: Ib3c8cd4b0ad6c012ccbeed12ebedd46b9b6cca95
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

Change-Id: I94ca7b239e974b6b400933466ee2ef5ae4def336
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

This mainly takes CppEditorSupport apart.

* Parsing is now invoked by CPPEditorDocument itself by listening to
  QTextDocument::contentsChanged().

* Upon construction and destruction CPPEditorDocument creates and
  deletes an EditorDocumentHandle for (un)registration in the model
  manager. This handle provides everything to generate the working copy
  and to access the editor document processor.

* A CPPEditorDocument owns a BaseEditorDocumentProcessor instance that
  controls parsing, semantic info recalculation and the semantic
  highlighting for the document. This is more or less what is left from
  CppEditorSupport and can be considered as the backend of a
  CPPEditorDocument. CPPEditorDocument itself is quite small.

    * BuiltinEditorDocumentProcessor and ClangEditorDocumentProcessor
      derive from BaseEditorDocumentProcessor and implement the gaps.

    * Since the semantic info calculation was bound to the widget, it
      also calculated the local uses, which depend on the cursor
      position. This calculation got moved into the extracted class
      UseSeletionsUpdater in the cppeditor plugin, which is run once the
      cursor position changes or the semantic info document is updated.

    * Some more logic got extracted:
	- SemanticInfoUpdater (logic was in CppEditorSupport)
	- SemanticHighlighter (logic was in CppEditorSupport)

    * The *Parser and *Processor classes can be easily accessed by the
      static function get().

* CppHighlightingSupport is gone since it turned out to be useless.

* The editor dependency in CompletionAssistProviders is gone since we
  actually only need the file path now.

Change-Id: I49d3a7bd138c5ed9620123e34480772535156508
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: I554b5e9e3f1ef7c167fa45b5cd0c230fdf63073b
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: Ieff216017b9da1e6a12121688ea9572bdd81fd9b
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: I447acf28849bffb52c1e6b6eafdde221ec0b179e
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

This is the first step in actually making "closeEditor(s)" close editors
instead of documents.

Change-Id: I02761e0cef950b8fc093f65a90df04a9a7550681
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

So far the pre-compiled headers were processed (thus defines from those
headers were visible), but the actual includes for the documents were
not added, which is necessary for lookup/completion.

Note that this will be only done if pre-compiled headers are not ignored
(Options > C++ > Code Model > [] Ignore pre-compiled headers).

Change-Id: I54a8e6b00597af164d958e3e9f2a1075ea187788
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Instead of having two lists of paths, now only one list is used where
both include paths and framework paths can be mixed. This reflects the
way the compiler is invoked, and retains the (correct) search order.

Task-number: QTCREATORBUG-11599
Change-Id: I373953e3e305df5b7a0d10920e12d146584adf9f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

...since it does quite a bit more than only preprocessing, as the name
suggests. We use that class to process source files in general. The
output is not a preprocessed source, but a set of CPlusPlus::Documents
with symbols.

Change-Id: I787d0f22f9f042ddf0c99e8c2f0bdb9aa7001735
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

...instead CppModelManager::snapshot().document().

Change-Id: If79bc03d062d309bbf6d4b229255ba281cddf8d5
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: I9843c4163aad3fa3f1bfa33060c76328fc2dc25a
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: I3e703c923f6e1a14a89c76f394a070184db0c7bf
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

Move item model implementation to private, adjust user code.

Change-Id: Ifbe94e7c7b9b1e8be1b4c531958dbd7a9413af13
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

Change-Id: Ib5423fdd064e4546f848c0b640b0ed0514c26d3a
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

The example project parts had no project file set and thus the "right"
project part could not be determined in cppeditor.cpp:718.

Change-Id: I088571e9d3c3c8790670bbdd8e68190835a85ad5
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Closing an editor might trigger a timer which leads to the invocation of
the garbage collector. This is unfavourable for the plugin tests since a
test function closing an editor might influence a subsequent test
function (e.g. files get removed from the global snapshot although they
were added shortly before).

Change-Id: Ia80c11f99e2437fe145dc2d983b21962539b5181
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

* Unify class names
* Fix coding style

Change-Id: I7498192ba9e6b9fc0e97d3d4f0dbb30f1853a0c9
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Move common functionality of the 12 test classes into base classes.

Change-Id: If64d3cec876807ac6f991151189860a99b8ff4ca
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>