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-rw-r--r--tools/qtpy2cpp_lib/astdump.py149
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diff --git a/tools/qtpy2cpp_lib/astdump.py b/tools/qtpy2cpp_lib/astdump.py
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-#############################################################################
-##
-## 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.
-##
-## $QT_END_LICENSE$
-##
-#############################################################################
-
-"""Tool to dump a Python AST"""
-
-
-from argparse import ArgumentParser, RawTextHelpFormatter
-import ast
-from enum import Enum
-import sys
-import tokenize
-
-
-from nodedump import debug_format_node
-
-DESCRIPTION = "Tool to dump a Python AST"
-
-
-_source_lines = []
-_opt_verbose = False
-
-
-def first_non_space(s):
- for i, c in enumerate(s):
- if c != ' ':
- return i
- return 0
-
-
-class NodeType(Enum):
- IGNORE = 1
- PRINT_ONE_LINE = 2 # Print as a one liner, do not visit children
- PRINT = 3 # Print with opening closing tag, visit children
- PRINT_WITH_SOURCE = 4 # Like PRINT, but print source line above
-
-
-def get_node_type(node):
- if isinstance(node, (ast.Load, ast.Store, ast.Delete)):
- return NodeType.IGNORE
- if isinstance(node, (ast.Add, ast.alias, ast.arg, ast.Eq, ast.Gt, ast.Lt,
- ast.Mult, ast.Name, ast.NotEq, ast.NameConstant, ast.Not,
- ast.Num, ast.Str)):
- return NodeType.PRINT_ONE_LINE
- if not hasattr(node, 'lineno'):
- return NodeType.PRINT
- if isinstance(node, (ast.Attribute)):
- return NodeType.PRINT_ONE_LINE if isinstance(node.value, ast.Name) else NodeType.PRINT
- return NodeType.PRINT_WITH_SOURCE
-
-
-class DumpVisitor(ast.NodeVisitor):
- def __init__(self):
- ast.NodeVisitor.__init__(self)
- self._indent = 0
- self._printed_source_lines = {-1}
-
- def generic_visit(self, node):
- node_type = get_node_type(node)
- if _opt_verbose and node_type in (NodeType.IGNORE, NodeType.PRINT_ONE_LINE):
- node_type = NodeType.PRINT
- if node_type == NodeType.IGNORE:
- return
- self._indent = self._indent + 1
- indent = ' ' * self._indent
-
- if node_type == NodeType.PRINT_WITH_SOURCE:
- line_number = node.lineno - 1
- if line_number not in self._printed_source_lines:
- self._printed_source_lines.add(line_number)
- line = _source_lines[line_number]
- non_space = first_non_space(line)
- print('{:04d} {}{}'.format(line_number, '_' * non_space,
- line[non_space:]))
-
- if node_type == NodeType.PRINT_ONE_LINE:
- print(indent, debug_format_node(node))
- else:
- print(indent, '>', debug_format_node(node))
- ast.NodeVisitor.generic_visit(self, node)
- print(indent, '<', type(node).__name__)
-
- self._indent = self._indent - 1
-
-
-def parse_ast(filename):
- node = None
- with tokenize.open(filename) as f:
- global _source_lines
- source = f.read()
- _source_lines = source.split('\n')
- node = ast.parse(source, mode="exec")
- return node
-
-
-def create_arg_parser(desc):
- parser = ArgumentParser(description=desc,
- formatter_class=RawTextHelpFormatter)
- parser.add_argument('--verbose', '-v', action='store_true',
- help='Verbose')
- parser.add_argument('source', type=str, help='Python source')
- return parser
-
-
-if __name__ == '__main__':
- arg_parser = create_arg_parser(DESCRIPTION)
- options = arg_parser.parse_args()
- _opt_verbose = options.verbose
- title = f'AST tree for {options.source}'
- print('=' * len(title))
- print(title)
- print('=' * len(title))
- tree = parse_ast(options.source)
- DumpVisitor().visit(tree)