Without this, too many threads are spawned, and loading a project takes
forever.

Change-Id: I3c22557ddd7bfb0c70f7b089c276432e3b003097
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

Change-Id: Ifcc2a34e3478eb84f95221b79e39f7a670e6b2e0
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

* Update files in src/plugins

Change-Id: Ia5d77fad7d19d4bb3498e78661982f68729adb22
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

This reverts the changes

    commit beac7b95
    C++: Fix highlighting after "invalid code"

    commit 78ab287f
    C++: Stop parsing a declaration after two tries

which were a work around for QTCREATORBUG-12890.

A follow-up patch provides a proper fix.

Task-number: QTCREATORBUG-12890
Change-Id: I2650a8e41c8ff1180cad9f069e463fc51bd2f1b1
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

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: I711d5fb475ef814a1dc9d2822740e827f3f67125
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

For the semantic info document we do not expand function like macros and
because of that certain macro invocations lead to invalid code that we
need to handle, e.g.:

	Q_GLOBAL_STATIC(CppTools::SymbolFinder, symbolFinder)
	class Foo {};

This change makes parsing Foo in the semantic info document successfully
again, which affects highlighting of that class.

Change-Id: I389265ac64d3f0b8b8f406d38fa58d78820b14ba
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

...for document processing and highlighting.

Change-Id: I31d42a5a5010260643ec76688080fd14a486f7e3
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

Change-Id: I0acde2c3b995693de682679471f03af85bdd0a61
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

Changes from the current editor snapshot to the previous one represent
dependency changes (include paths, defines, ...) for the document. Use
this to stop the semantic info updater from re-using the previous
document for highlighthing.

Task-number: QTCREATORBUG-12267
Change-Id: I91308700122ded7c458c267b685c00b966874a64
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

This patch removes src/libs/utils/qtcoverride.h
and uses Q_DECL_OVERRIDE from Qt 5 instead.

Change-Id: I61ffa539648ffe996dc061eec7708c04580c0f09
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

...so that SemanticInfoUpdater does not depend anymore on the
EditorDocumentParser. Accessing the snapshot was a blocking operation
that delayed the semantic info update longer than actually needed.

Change-Id: I348d22ef83ab310d4319b2e8b9678fe90ee24d6a
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.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>