1 files changed, 86 insertions, 0 deletions
diff --git a/tools/qtpy2cpp_lib/nodedump.py b/tools/qtpy2cpp_lib/nodedump.py
new file mode 100644
index 000000000..5cb7c3f2d
--- /dev/null
+++ b/tools/qtpy2cpp_lib/nodedump.py
@@ -0,0 +1,86 @@
+#############################################################################
+##
+## Copyright (C) 2020 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the Qt for Python project.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## 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.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+"""Helper to dump AST nodes for debugging"""
+
+
+import ast
+
+
+def to_string(node):
+    """Helper to retrieve a string from the (Lists of )Name/Attribute
+       aggregated into some nodes"""
+    if isinstance(node, ast.Name):
+        return node.id
+    if isinstance(node, ast.Attribute):
+        return node.attr
+    return ''
+
+
+def debug_format_node(node):
+    """Format AST node for debugging"""
+    if isinstance(node, ast.alias):
+        return f'alias("{node.name}")'
+    if isinstance(node, ast.arg):
+        return f'arg({node.arg})'
+    if isinstance(node, ast.Attribute):
+        if isinstance(node.value, ast.Name):
+            nested_name = debug_format_node(node.value)
+            return f'Attribute("{node.attr}", {nested_name})'
+        return f'Attribute("{node.attr}")'
+    if isinstance(node, ast.Call):
+        return 'Call({}({}))'.format(to_string(node.func), len(node.args))
+    if isinstance(node, ast.ClassDef):
+        base_names = [to_string(base) for base in node.bases]
+        bases = ': ' + ','.join(base_names) if base_names else ''
+        return f'ClassDef({node.name}{bases})'
+    if isinstance(node, ast.ImportFrom):
+        return f'ImportFrom("{node.module}")'
+    if isinstance(node, ast.FunctionDef):
+        arg_names = [a.arg for a in node.args.args]
+        return 'FunctionDef({}({}))'.format(node.name, ', '.join(arg_names))
+    if isinstance(node, ast.Name):
+        return 'Name("{}", Ctx={})'.format(node.id, type(node.ctx).__name__)
+    if isinstance(node, ast.NameConstant):
+        return f'NameConstant({node.value})'
+    if isinstance(node, ast.Num):
+        return f'Num({node.n})'
+    if isinstance(node, ast.Str):
+        return f'Str("{node.s}")'
+    return type(node).__name__