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Diffstat (limited to 'tools/qtpy2cpp_lib/visitor.py')
| -rw-r--r-- | tools/qtpy2cpp_lib/visitor.py | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/tools/qtpy2cpp_lib/visitor.py b/tools/qtpy2cpp_lib/visitor.py deleted file mode 100644 index d17d5f53c..000000000 --- a/tools/qtpy2cpp_lib/visitor.py +++ /dev/null @@ -1,260 +0,0 @@ -############################################################################# -## -## 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. -## -## $QT_END_LICENSE$ -## -############################################################################# - -"""AST visitor printing out C++""" - -import ast -import sys -import tokenize -import warnings - -from .formatter import (CppFormatter, format_for_loop, - format_function_def_arguments, format_inheritance, - format_literal, format_reference, - format_start_function_call, - write_import, write_import_from) - -from .nodedump import debug_format_node - - -class ConvertVisitor(ast.NodeVisitor, CppFormatter): - """AST visitor printing out C++ - Note on implementation: - - Any visit_XXX() overridden function should call self.generic_visit(node) - to continue visiting - - When controlling the visiting manually (cf visit_Call()), - self.visit(child) needs to be called since that dispatches to - visit_XXX(). This is usually done to prevent undesired output - for example from references of calls, etc. - """ - - debug = False - - def __init__(self, output_file): - ast.NodeVisitor.__init__(self) - CppFormatter.__init__(self, output_file) - self._class_scope = [] # List of class names - self._stack = [] # nodes - self._debug_indent = 0 - - @staticmethod - def create_ast(filename): - """Create an Abstract Syntax Tree on which a visitor can be run""" - node = None - with tokenize.open(filename) as file: - node = ast.parse(file.read(), mode="exec") - return node - - def generic_visit(self, node): - parent = self._stack[-1] if self._stack else None - if self.debug: - self._debug_enter(node, parent) - self._stack.append(node) - try: - super().generic_visit(node) - except Exception as e: - line_no = node.lineno if hasattr(node, 'lineno') else -1 - message = 'Error "{}" at line {}'.format(str(e), line_no) - warnings.warn(message) - self._output_file.write(f'\n// {message}\n') - del self._stack[-1] - if self.debug: - self._debug_leave(node) - - def visit_Add(self, node): - self.generic_visit(node) - self._output_file.write(' + ') - - def visit_Assign(self, node): - self._output_file.write('\n') - self.INDENT() - for target in node.targets: - if isinstance(target, ast.Tuple): - warnings.warn('List assignment not handled (line {}).'. - format(node.lineno)) - elif isinstance(target, ast.Subscript): - warnings.warn('Subscript assignment not handled (line {}).'. - format(node.lineno)) - else: - self._output_file.write(format_reference(target)) - self._output_file.write(' = ') - self.visit(node.value) - self._output_file.write(';\n') - - def visit_Attribute(self, node): - """Format a variable reference (cf visit_Name)""" - self._output_file.write(format_reference(node)) - - def visit_BinOp(self, node): - # Parentheses are not exposed, so, every binary operation needs to - # be enclosed by (). - self._output_file.write('(') - self.generic_visit(node) - self._output_file.write(')') - - def visit_Call(self, node): - self._output_file.write(format_start_function_call(node)) - # Manually do visit(), skip the children of func - for i, arg in enumerate(node.args): - if i > 0: - self._output_file.write(', ') - self.visit(arg) - self._output_file.write(')') - - def visit_ClassDef(self, node): - # Manually do visit() to skip over base classes - # and annotations - self._class_scope.append(node.name) - self.write_class_def(node) - self.indent() - for b in node.body: - self.visit(b) - self.dedent() - self.indent_line('};') - del self._class_scope[-1] - - def visit_Expr(self, node): - self._output_file.write('\n') - self.INDENT() - self.generic_visit(node) - self._output_file.write(';\n') - - def visit_Gt(self, node): - self.generic_visit(node) - self._output_file.write('>') - - def visit_For(self, node): - # Manually do visit() to get the indentation right. - # TODO: what about orelse? - self.indent_line(format_for_loop(node)) - self.indent() - for b in node.body: - self.visit(b) - self.dedent() - self.indent_line('}') - - def visit_FunctionDef(self, node): - class_context = self._class_scope[-1] if self._class_scope else None - self.write_function_def(node, class_context) - self.indent() - self.generic_visit(node) - self.dedent() - self.indent_line('}') - - def visit_If(self, node): - # Manually do visit() to get the indentation right. Note: - # elsif() is modelled as nested if. - self.indent_string('if (') - self.visit(node.test) - self._output_file.write(') {\n') - self.indent() - for b in node.body: - self.visit(b) - self.dedent() - self.indent_string('}') - if node.orelse: - self._output_file.write(' else {\n') - self.indent() - for b in node.orelse: - self.visit(b) - self.dedent() - self.indent_string('}') - self._output_file.write('\n') - - def visit_Import(self, node): - write_import(self._output_file, node) - - def visit_ImportFrom(self, node): - write_import_from(self._output_file, node) - - def visit_List(self, node): - # Manually do visit() to get separators right - self._output_file.write('{') - for i, el in enumerate(node.elts): - if i > 0: - self._output_file.write(', ') - self.visit(el) - self._output_file.write('}') - - def visit_Lt(self, node): - self.generic_visit(node) - self._output_file.write('<') - - def visit_Mult(self, node): - self.generic_visit(node) - self._output_file.write(' * ') - - def visit_Name(self, node): - """Format a variable reference (cf visit_Attribute)""" - self._output_file.write(format_reference(node)) - - def visit_NameConstant(self, node): - self.generic_visit(node) - if node.value is None: - self._output_file.write('nullptr') - elif not node.value: - self._output_file.write('false') - else: - self._output_file.write('true') - - def visit_Num(self, node): - self.generic_visit(node) - self._output_file.write(format_literal(node)) - - def visit_Str(self, node): - self.generic_visit(node) - self._output_file.write(format_literal(node)) - - def visit_UnOp(self, node): - self.generic_visit(node) - - def _debug_enter(self, node, parent=None): - message = '{}>generic_visit({})'.format(' ' * self ._debug_indent, - debug_format_node(node)) - if parent: - message += ', parent={}'.format(debug_format_node(parent)) - message += '\n' - sys.stderr.write(message) - self._debug_indent += 1 - - def _debug_leave(self, node): - self._debug_indent -= 1 - message = '{}<generic_visit({})\n'.format(' ' * self ._debug_indent, - type(node).__name__) - sys.stderr.write(message) |