Create hinting stubs for Python IDEs

This implementation formats all signatures in a way
that is known as type hinting files (.pyi).

Usage
-----

The script is to be called by the same Python interpreter that
was used to build PySide. It works with Python 2 and 3.
On Python 3, it performs a self-test.

    python3  sources/pyside2/PySide2/support/generate_pyi.py run

will generate .pyi files for all compiled PySide modules
and places them into site packages to the binaries.
An optional outpath can be specified.

It is planned to call this script automatically after install.

o Local constants are not included, yet.
  Maybe they never will, unless requested.

o The keyword "from" appears 43 times in argument lists.
  It is fixed in Python, only which does not matter.

o When using Python 3.7 or above, it respects Pep 563 and
  avoids imports which are deferred to runtime.

Task-number: PYSIDE-735
Change-Id: I3bcd5d9284b853fe955376bf35c7897e3698da2b
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

3 files changed, 57 insertions, 2 deletions

diff --git a/sources/pyside2/PySide2/support/signature/__init__.py b/sources/pyside2/PySide2/support/signature/__init__.py
index d587a4d62..5a87a814a 100644
--- a/sources/pyside2/PySide2/support/signature/__init__.py
+++ b/sources/pyside2/PySide2/support/signature/__init__.py
@@ -41,6 +41,6 @@ from __future__ import print_function, absolute_import
 
 # Trigger initialization phase 2.
 _ = type.__signature__
-from signature_loader import get_signature, inspect
+from signature_loader import get_signature, inspect, typing
 
-__all__ = "get_signature inspect layout mapping lib".split()
+__all__ = "get_signature inspect typing layout mapping lib".split()
diff --git a/sources/pyside2/PySide2/support/signature/mapping.py b/sources/pyside2/PySide2/support/signature/mapping.py
index 15727cb6a..cf5857c65 100644
--- a/sources/pyside2/PySide2/support/signature/mapping.py
+++ b/sources/pyside2/PySide2/support/signature/mapping.py
@@ -218,6 +218,7 @@ def init_QtCore():
 
 def init_QtGui():
     import PySide2.QtGui
+    from PySide2.QtGui import QPageLayout, QPageSize # 5.12 macOS
     type_map.update({
         "QVector< QTextLayout.FormatRange >()": [], # do we need more structure?
         "USHRT_MAX": ushort_max,
@@ -398,4 +399,16 @@ def init_QtWinExtras():
     })
     return locals()
 
+# from 5.12, macOS
+def init_QtDataVisualization():
+    from PySide2.QtDataVisualization import QtDataVisualization
+    QtDataVisualization.QBarDataRow = typing.List[QtDataVisualization.QBarDataItem]
+    QtDataVisualization.QBarDataArray = typing.List[QtDataVisualization.QBarDataRow]
+    QtDataVisualization.QSurfaceDataRow = typing.List[QtDataVisualization.QSurfaceDataItem]
+    QtDataVisualization.QSurfaceDataArray = typing.List[QtDataVisualization.QSurfaceDataRow]
+    type_map.update({
+        "100.0f": 100.0,
+    })
+    return locals()
+
 # end of file
diff --git a/sources/pyside2/PySide2/support/signature/typing.py b/sources/pyside2/PySide2/support/signature/typing.py
new file mode 100644
index 000000000..dd52a2c45
--- /dev/null
+++ b/sources/pyside2/PySide2/support/signature/typing.py
@@ -0,0 +1,42 @@
+#############################################################################
+##
+## Copyright (C) 2018 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of Qt for Python.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 3 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL3 included in the
+## packaging of this file. Please review the following information to
+## ensure the GNU Lesser General Public License version 3 requirements
+## will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 2.0 or (at your option) the GNU General
+## Public license version 3 or any later version approved by the KDE Free
+## Qt Foundation. The licenses are as published by the Free Software
+## Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-2.0.html and
+## https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+from __future__ import print_function, absolute_import
+
+from signature_loader.typing import *