| from gast.astn import AstToGAst, GAstToAst |
| import gast |
| import ast |
| import sys |
|
|
|
|
| class Ast3ToGAst(AstToGAst): |
| if sys.version_info.minor < 9: |
|
|
| def visit_ExtSlice(self, node): |
| new_node = gast.Tuple(self._visit(node.dims), gast.Load()) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Index(self, node): |
| return self._visit(node.value) |
|
|
| if sys.version_info.minor < 8: |
| def visit_Module(self, node): |
| new_node = gast.Module( |
| self._visit(node.body), |
| [] |
| ) |
| return new_node |
|
|
| def visit_Num(self, node): |
| new_node = gast.Constant( |
| node.n, |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Ellipsis(self, node): |
| new_node = gast.Constant( |
| Ellipsis, |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| new_node.end_lineno = new_node.end_col_offset = None |
| return new_node |
|
|
| def visit_Str(self, node): |
| new_node = gast.Constant( |
| node.s, |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Bytes(self, node): |
| new_node = gast.Constant( |
| node.s, |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_FunctionDef(self, node): |
| new_node = gast.FunctionDef( |
| self._visit(node.name), |
| self._visit(node.args), |
| self._visit(node.body), |
| self._visit(node.decorator_list), |
| self._visit(node.returns), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncFunctionDef(self, node): |
| new_node = gast.AsyncFunctionDef( |
| self._visit(node.name), |
| self._visit(node.args), |
| self._visit(node.body), |
| self._visit(node.decorator_list), |
| self._visit(node.returns), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_For(self, node): |
| new_node = gast.For( |
| self._visit(node.target), |
| self._visit(node.iter), |
| self._visit(node.body), |
| self._visit(node.orelse), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncFor(self, node): |
| new_node = gast.AsyncFor( |
| self._visit(node.target), |
| self._visit(node.iter), |
| self._visit(node.body), |
| self._visit(node.orelse), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_With(self, node): |
| new_node = gast.With( |
| self._visit(node.items), |
| self._visit(node.body), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncWith(self, node): |
| new_node = gast.AsyncWith( |
| self._visit(node.items), |
| self._visit(node.body), |
| None, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Call(self, node): |
| if sys.version_info.minor < 5: |
| if node.starargs: |
| star = gast.Starred(self._visit(node.starargs), |
| gast.Load()) |
| gast.copy_location(star, node) |
| starred = [star] |
| else: |
| starred = [] |
|
|
| if node.kwargs: |
| kw = gast.keyword(None, self._visit(node.kwargs)) |
| gast.copy_location(kw, node.kwargs) |
| kwargs = [kw] |
| else: |
| kwargs = [] |
| else: |
| starred = kwargs = [] |
|
|
| new_node = gast.Call( |
| self._visit(node.func), |
| self._visit(node.args) + starred, |
| self._visit(node.keywords) + kwargs, |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_NameConstant(self, node): |
| if node.value is None: |
| new_node = gast.Constant(None, None) |
| elif node.value is True: |
| new_node = gast.Constant(True, None) |
| elif node.value is False: |
| new_node = gast.Constant(False, None) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_arguments(self, node): |
| new_node = gast.arguments( |
| self._visit(node.args), |
| [], |
| self._visit(node.vararg), |
| self._visit(node.kwonlyargs), |
| self._visit(node.kw_defaults), |
| self._visit(node.kwarg), |
| self._visit(node.defaults), |
| ) |
| gast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Name(self, node): |
| new_node = gast.Name( |
| self._visit(node.id), |
| self._visit(node.ctx), |
| None, |
| None, |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_arg(self, node): |
| if sys.version_info.minor < 8: |
| extra_args = [None] |
| else: |
| extra_args = [self._visit(node.type_comment)] |
|
|
| new_node = gast.Name( |
| self._visit(node.arg), |
| gast.Param(), |
| self._visit(node.annotation), |
| *extra_args |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_ExceptHandler(self, node): |
| if node.name: |
| new_node = gast.ExceptHandler( |
| self._visit(node.type), |
| gast.Name(node.name, gast.Store(), None, None), |
| self._visit(node.body)) |
| ast.copy_location(new_node, node) |
| return new_node |
| else: |
| return self.generic_visit(node) |
|
|
| if sys.version_info.minor < 6: |
|
|
| def visit_comprehension(self, node): |
| new_node = gast.comprehension( |
| target=self._visit(node.target), |
| iter=self._visit(node.iter), |
| ifs=self._visit(node.ifs), |
| is_async=0, |
| ) |
| return ast.copy_location(new_node, node) |
|
|
|
|
| class GAstToAst3(GAstToAst): |
| if sys.version_info.minor < 9: |
| def visit_Subscript(self, node): |
| def adjust_slice(s): |
| if isinstance(s, ast.Slice): |
| return s |
| else: |
| return ast.Index(s) |
| if isinstance(node.slice, gast.Tuple): |
| if any(isinstance(elt, gast.slice) for elt in node.slice.elts): |
| new_slice = ast.ExtSlice( |
| [adjust_slice(x) for x in |
| self._visit(node.slice.elts)]) |
| else: |
| value = ast.Tuple(self._visit(node.slice.elts), ast.Load()) |
| ast.copy_location(value, node.slice) |
| new_slice = ast.Index(value) |
| else: |
| new_slice = adjust_slice(self._visit(node.slice)) |
| ast.copy_location(new_slice, node.slice) |
|
|
| new_node = ast.Subscript( |
| self._visit(node.value), |
| new_slice, |
| self._visit(node.ctx), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| if sys.version_info.minor < 8: |
|
|
| def visit_Module(self, node): |
| new_node = ast.Module(self._visit(node.body)) |
| return new_node |
|
|
| def visit_Constant(self, node): |
| if node.value is None: |
| new_node = ast.NameConstant(node.value) |
| elif node.value is Ellipsis: |
| new_node = ast.Ellipsis() |
| elif isinstance(node.value, bool): |
| new_node = ast.NameConstant(node.value) |
| elif isinstance(node.value, (int, float, complex)): |
| new_node = ast.Num(node.value) |
| elif isinstance(node.value, str): |
| new_node = ast.Str(node.value) |
| else: |
| new_node = ast.Bytes(node.value) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def _make_arg(self, node): |
| if node is None: |
| return None |
|
|
| if sys.version_info.minor < 8: |
| extra_args = tuple() |
| else: |
| extra_args = self._visit(node.type_comment), |
|
|
| new_node = ast.arg( |
| self._visit(node.id), |
| self._visit(node.annotation), |
| *extra_args |
| ) |
| return ast.copy_location(new_node, node) |
|
|
| def visit_Name(self, node): |
| new_node = ast.Name( |
| self._visit(node.id), |
| self._visit(node.ctx), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_ExceptHandler(self, node): |
| if node.name: |
| new_node = ast.ExceptHandler( |
| self._visit(node.type), |
| node.name.id, |
| self._visit(node.body)) |
| return ast.copy_location(new_node, node) |
| else: |
| return self.generic_visit(node) |
|
|
| if sys.version_info.minor < 5: |
|
|
| def visit_Call(self, node): |
| if node.args and isinstance(node.args[-1], gast.Starred): |
| args = node.args[:-1] |
| starargs = node.args[-1].value |
| else: |
| args = node.args |
| starargs = None |
|
|
| if node.keywords and node.keywords[-1].arg is None: |
| keywords = node.keywords[:-1] |
| kwargs = node.keywords[-1].value |
| else: |
| keywords = node.keywords |
| kwargs = None |
|
|
| new_node = ast.Call( |
| self._visit(node.func), |
| self._visit(args), |
| self._visit(keywords), |
| self._visit(starargs), |
| self._visit(kwargs), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_ClassDef(self, node): |
| self.generic_visit(node) |
| new_node = ast.ClassDef( |
| name=self._visit(node.name), |
| bases=self._visit(node.bases), |
| keywords=self._visit(node.keywords), |
| body=self._visit(node.body), |
| decorator_list=self._visit(node.decorator_list), |
| starargs=None, |
| kwargs=None, |
| ) |
| return ast.copy_location(new_node, node) |
|
|
| elif sys.version_info.minor < 8: |
|
|
| def visit_FunctionDef(self, node): |
| new_node = ast.FunctionDef( |
| self._visit(node.name), |
| self._visit(node.args), |
| self._visit(node.body), |
| self._visit(node.decorator_list), |
| self._visit(node.returns), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncFunctionDef(self, node): |
| new_node = ast.AsyncFunctionDef( |
| self._visit(node.name), |
| self._visit(node.args), |
| self._visit(node.body), |
| self._visit(node.decorator_list), |
| self._visit(node.returns), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_For(self, node): |
| new_node = ast.For( |
| self._visit(node.target), |
| self._visit(node.iter), |
| self._visit(node.body), |
| self._visit(node.orelse), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncFor(self, node): |
| new_node = ast.AsyncFor( |
| self._visit(node.target), |
| self._visit(node.iter), |
| self._visit(node.body), |
| self._visit(node.orelse), |
| None, |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_With(self, node): |
| new_node = ast.With( |
| self._visit(node.items), |
| self._visit(node.body), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_AsyncWith(self, node): |
| new_node = ast.AsyncWith( |
| self._visit(node.items), |
| self._visit(node.body), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_Call(self, node): |
| new_node = ast.Call( |
| self._visit(node.func), |
| self._visit(node.args), |
| self._visit(node.keywords), |
| ) |
| ast.copy_location(new_node, node) |
| return new_node |
|
|
| def visit_arguments(self, node): |
| extra_args = [self._make_arg(node.vararg), |
| [self._make_arg(n) for n in node.kwonlyargs], |
| self._visit(node.kw_defaults), |
| self._make_arg(node.kwarg), |
| self._visit(node.defaults), ] |
| if sys.version_info.minor >= 8: |
| new_node = ast.arguments( |
| [self._make_arg(arg) for arg in node.posonlyargs], |
| [self._make_arg(n) for n in node.args], |
| *extra_args |
| ) |
| else: |
| new_node = ast.arguments( |
| [self._make_arg(n) for n in node.args], |
| *extra_args |
| ) |
| return new_node |
|
|
|
|
| def ast_to_gast(node): |
| return Ast3ToGAst().visit(node) |
|
|
|
|
| def gast_to_ast(node): |
| return GAstToAst3().visit(node) |
|
|