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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: I1d572e8cc3e76ef6bbae720e3c3482292aab9609
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Change-Id: I554b5e9e3f1ef7c167fa45b5cd0c230fdf63073b
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>

Change-Id: Iac6c9fe1ada27ac0d96417e490cc5723e6969541
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

In test_includeGroups_detectIncludeGroupsByIncludeType the test file was
not removed and thus subsequent and isolated executions of this test
failed.

Change-Id: I5eeb4f004f5b146ac794ca913b4092629131fca3
Reviewed-by: Erik Verbruggen <erik.verbruggen@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>

This caused displaced highlighting of macro uses after #if constructs.

MacroUse::utf16charBegin() was based on the last "continuation token",
which was wrong.

Change-Id: I89983d82fcf804ba853c04a59a7533c489785d05
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: I9a05a92c1adc37db0c918127715714d1f6d2a78d
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

...of type 'No such file or directory' to the CPlusPlus::Document. Only
the first one was added and as a result, the editor only wavely
underlined that one.

Add also diagnostic messages if it's not possible to get the file
contents.

Change-Id: I8389d8e6af9480ea6712759ce5e130e1dd8912f1
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

...in CPlusPlus::Document due to cyclic includes.

Task-number: QTCREATORBUG-11457
Change-Id: I1ca19c901c26d9984d795a61879dd6b41c57096c
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

Use QCOMPARE instead of QVERIFY where appropriate.

Change-Id: I7965a00fd004b8c3a20186bb692bf541f154d12b
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

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

Change-Id: I232194e2693a8024ff67945cbc70049e52b9ef5d
Reviewed-by: David Schulz <david.schulz@digia.com>

Change-Id: Ia36e7e7142dbc030a428369ed04e76e70e8eef0b
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>