Initial commit

venv/lib/python3.8/site-packages/astroid/brain/brain_qt.py

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+# Copyright (c) 2015-2016, 2018 Claudiu Popa <pcmanticore@gmail.com>
+# Copyright (c) 2016 Ceridwen <ceridwenv@gmail.com>
+# Copyright (c) 2017 Roy Wright <roy@wright.org>
+# Copyright (c) 2018 Ashley Whetter <ashley@awhetter.co.uk>
+# Copyright (c) 2019 Antoine Boellinger <aboellinger@hotmail.com>
+
+# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER
+
+"""Astroid hooks for the PyQT library."""
+
+from astroid import MANAGER, register_module_extender
+from astroid.builder import AstroidBuilder
+from astroid import nodes
+from astroid import parse
+
+
+def _looks_like_signal(node, signal_name="pyqtSignal"):
+    if "__class__" in node.instance_attrs:
+        try:
+            cls = node.instance_attrs["__class__"][0]
+            return cls.name == signal_name
+        except AttributeError:
+            # return False if the cls does not have a name attribute
+            pass
+    return False
+
+
+def transform_pyqt_signal(node):
+    module = parse(
+        """
+    class pyqtSignal(object):
+        def connect(self, slot, type=None, no_receiver_check=False):
+            pass
+        def disconnect(self, slot):
+            pass
+        def emit(self, *args):
+            pass
+    """
+    )
+    signal_cls = module["pyqtSignal"]
+    node.instance_attrs["emit"] = signal_cls["emit"]
+    node.instance_attrs["disconnect"] = signal_cls["disconnect"]
+    node.instance_attrs["connect"] = signal_cls["connect"]
+
+
+def transform_pyside_signal(node):
+    module = parse(
+        """
+    class NotPySideSignal(object):
+        def connect(self, receiver, type=None):
+            pass
+        def disconnect(self, receiver):
+            pass
+        def emit(self, *args):
+            pass
+    """
+    )
+    signal_cls = module["NotPySideSignal"]
+    node.instance_attrs["connect"] = signal_cls["connect"]
+    node.instance_attrs["disconnect"] = signal_cls["disconnect"]
+    node.instance_attrs["emit"] = signal_cls["emit"]
+
+
+def pyqt4_qtcore_transform():
+    return AstroidBuilder(MANAGER).string_build(
+        """
+
+def SIGNAL(signal_name): pass
+
+class QObject(object):
+    def emit(self, signal): pass
+"""
+    )
+
+
+register_module_extender(MANAGER, "PyQt4.QtCore", pyqt4_qtcore_transform)
+MANAGER.register_transform(nodes.FunctionDef, transform_pyqt_signal, _looks_like_signal)
+MANAGER.register_transform(
+    nodes.ClassDef,
+    transform_pyside_signal,
+    lambda node: node.qname() in ("PySide.QtCore.Signal", "PySide2.QtCore.Signal"),
+)