in places where we do not need it

Change-Id: Ibf35f8144da859fffa3e0a7b6bb262284ec2292a
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

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

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

Affected functionality was, among others:
 * Getting the correct project part when opening a file
 * Fallback project part (merged defines/includes) not up to date
 * Fallback for "Switch Header/Source" not up to date

In the early days sessions switching was probably implemented by "close
all projects of session X, open all projects of session Y". That's not
the case anymore today.

Change-Id: I4c6a80e2eb219615d3ea6fcf07be7c05072c8832
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

* Update files in src/plugins

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

Also extracting inline HeaderPath class and change projects list in vector
because the size is  larger than a pointer.

Change-Id: I885fdff3fe9bccc877634d1615249755f5b674fd
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

This removes also the need to close editor documents.

Change-Id: I96c68105bceb37841053f3dbd8a264e059a02cb8
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

...so the built-in parser can handle them.

Change-Id: Iff69638f8939c3c4dced99699a3357dd94b23c71
Task-number: QTCREATORBUG-15431
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

We reparse first the current and then the visible translation units before
we reparse all other units.

The signals connections are queued to wait for the visible editor update.

Change-Id: I5e2b8bc80568450268ca24e26720b3f5af640995
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

Related to

    commit c47079f97f7d42db0c581525a2ce6fddbc0995f2
    Clang: Activate the code model with a check box

Change-Id: Ief11768ba0dd27788032e2dd3ad9b7ae39a8f52b
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

...when acessing m_headerPaths, m_projectFiles or m_definedMacros from
different threads.

ensureUpdated() locked the mutex before writing the variables, but
reading them happened with an unlocked mutex.

Change-Id: I4951fd58f1939e4e50534a018dd600004789668e
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

Provide the language option (e.g. "-x c++-header") when registering a
translation unit for the editor.

Task-number: QTCREATORBUG-14787
Change-Id: Ie06f9fdab302f1b21ba72cdb65b6aabf9f7bc04c
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

...with the clang code model.

In updateProjectInfo() we lock the project mutex and emit a signal.
However, the correspondig slot in the clang code model will call back
into a function that needs to lock the mutex, too:

    CppTools::CppModelManager::workingCopy // dead locks here
    CppTools::BaseEditorDocumentParser::InMemoryInfo::InMemoryInfo
    ClangCodeModel::Internal::ClangEditorDocumentProcessor::run
    ClangCodeModel::Internal::ModelManagerSupportClang::unregisterTranslationUnitsWithProjectParts
    ClangCodeModel::Internal::ModelManagerSupportClang::onProjectPartsRemoved
     ...
    CppTools::CppModelManager::projectPartsRemoved
    CppTools::CppModelManager::updateProjectInfo // emits here

Fixed by emitting the signal after releasing the mutex.

Change-Id: Id3f3cd22b0604f343ada56ea13c26f0dc1a75bd6
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

Finding the class definition for a forward declaration or finding the
function definition from its declaration is mostly determined by the
file iteration order. Documents with the most common path prefix are
checked first.

This works fine as long as the files of your project have a common
ancestor. If that's not the case, FollowSymbol might take you to the
definition within another project.

Fix that issue by considering the project part id when constructing the
file iteration order. Since the cached file iteration order now depends
on the projects, ensure to clear it if projects are added, changed or
removed.

Task-number: QTCREATORBUG-15116
Change-Id: I529166bac363959c9fee0b946747fd0370a88809
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

...to it can be reused by other clients more easily. Also, in a
follow-up change it will have a project part dependency that can be
cleared inside the CppModelManager more easily.

Change-Id: Ic9f2ce5212a94fd05ab0571e9ad99d0a25f5bc5c
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

It crashed in some places on our code-base due to the so-called "static
initialization order fiasco".
As a solution, it turns the variable into a function. This shouldn't have
a penalty due to QStringLiteral.

Change-Id: I9f8a955afdff878dc2f0db16fec861d81250c243
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

Didn't work if there was any folded text before the #include.

Change-Id: I8f16205f06bfaa8b8541401a9ebd5995c15b2227
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>

Change-Id: Ica1a33b2619f64746b8671bff2856503775a40bf
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

It compared pointers, not ids.

Change-Id: Ic77c64e452f8abfe9a35b74591f0f3baeebcf7f0
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

File paths are not unique since e.g. each qbs group in a file is mapped
to a project part.

Change-Id: I7df3f224dd23046b869f2588b8a34eb26cfc0b1a
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

Needed for ClangCodeModel.

If the content changes, we want to send it immediately to the
codemodelbackend process.

Change-Id: Iedf16930b494ccb5e91f1bc435db026067d98613
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>

Quitting Qt Creator before the project was loaded from the project
manager triggers the assert because the updateProjectInfo() call was not
yet made by the project manager.

Change-Id: I23c660971e48d007d1bae00ecf8ed5c2ad3d4071
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

This makes us independent of libclang crashes for completion.
Re-parsing for highlighting still happens in the Qt Creator process.

Run in verbose mode:
    qtc.clangcodemodel.ipc=true

Run tests:
    -test "ClangCodeModel"

Task-number: QTCREATORBUG-14108
Task-number: QTCREATORBUG-12819
Change-Id: Id3e95bd2afdb6508bbd1d35fddc69534a909b905
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

...with the environment variable QTC_CPP_FILE_SIZE_LIMIT_MB.

Task-number: QTCREATORBUG-14390
Change-Id: Iaefaa1a3db023b58f9351b96e1b9e2139797e280
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

For indexing we used a custom revision that was updated on each
modelManager BuiltinIndexingSupport::refreshSourceFiles() call. This
could lead to rejection of updated documents triggered by refactoring
actions, like for the following case:

 1. Open a project containing a.h and a.cpp
 2. Open a.cpp, insert some new lines, save and close the document
 3. Open a.h and rename a function that is defined in a.cpp
    --> The refactoring action modifies a.h and a.cpp, so re-indexing
        of those is triggered. Since a.cpp has already a higher revision
        (step 2) than the updated document, the updated document is
        discarded. As a consequence find usages and follow symbol fails
        for the renamed function.

Now the document call back provided to CppSourceProcessor is responsible
for updating the document revision based on the latest revision in the
global snapshot.

Change-Id: I4dfa0a4d34991655acfa749109f00c47b0fbfdbe
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

When the configuration (defines and includes dirs) did not change, we
only updated the m_projectToProjectsInfo data structure, but not the
others (m_projectFileToProjectPart, m_fileToProjectParts).

Change-Id: I0ca235ea4bbe4556bd8b6d36897dedd6482f86a0
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

Change-Id: I0144ac33e88980c431c54a6d69bbde28da4b1967
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

These operators led to parse errors, most prominently in Q_OBJECT uses
since this macro nowdays uses these operators.

Task-number: QTCREATORBUG-13905
Change-Id: I65632820d02ca5c5ef0b98f5d969cdc516d7f5b0
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

Change-Id: I1e7dd34ba5a51fb0b34d137dc03add4457b32ed1
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

Task-number: QTCREATORBUG-8007
Change-Id: Ic96aaa433442812a99bac9d16bb9124d66762e8c
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@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>

...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 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: Ib99eefcf3440d4383f624a614a3093f427efffbd
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

... by keying on Utils::FileName

Task-number: QTCREATORBUG-12390
Change-Id: Ia98afb5a9160a7fd9225a2f9e02539ff3c35ae86
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>

This fixes

    SOFT ASSERT: "!filePath.isEmpty()" in file
    /home/nik/dev/creator/creator-ut/src/plugins/cpptools/cppmodelmanager.cpp,
    line 467

which can be triggered by e.g. a "git show" document
(onCurrentEditorChanged does not check for an empty file path).

Change-Id: If4ed8e552069b290cb4ac93da52427b7ed2b91e8
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>

A DiffEditorDocument has an empty file path.

Change-Id: If097497514afa82b1ed220a37cae410f4a81aa9a
Task-number: QTCREATORBUG-13489
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>