forked from VimPlug/jedi
101 lines
3.1 KiB
Python
101 lines
3.1 KiB
Python
from os.path import dirname, basename, join
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import re
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import difflib
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from parso import split_lines
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class ChangedFile(object):
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def __init__(self, grammar, path, module_node, node_to_str_map):
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self._grammar = grammar
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self._path = path
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self._module_node = module_node
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self._node_to_str_map = node_to_str_map
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def get_diff(self):
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old_lines = split_lines(self._module_node.get_code(), keepends=True)
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new_lines = split_lines(self.get_code(), keepends=True)
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diff = difflib.unified_diff(
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old_lines, new_lines,
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fromfile=self._path,
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tofile=self._path
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)
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# Apparently there's a space at the end of the diff - for whatever
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# reason.
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return ''.join(diff).rstrip(' ')
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def get_code(self):
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return self._grammar.refactor(self._module_node, self._node_to_str_map)
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def apply(self):
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with open(self._path, 'w') as f:
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f.write(self.get_code())
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def __repr__(self):
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return '<%s: %s>' % (self.__class__.__name__, self._path)
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class Refactoring(object):
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def __init__(self, grammar, file_to_node_changes, renames=()):
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self._grammar = grammar
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self._renames = renames
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self._file_to_node_changes = file_to_node_changes
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def get_changed_files(self):
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return [
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ChangedFile(
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self._grammar, path,
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module_node=next(iter(map_)).get_root_node(),
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node_to_str_map=map_
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) for path, map_ in self._file_to_node_changes.items()
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]
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def get_renames(self):
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"""
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Files can be renamed in a refactoring.
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Returns ``Iterable[Tuple[str, str]]``.
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"""
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return sorted(self._renames)
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def get_diff(self):
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text = ''
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for from_, to in self.get_renames():
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text += 'rename from %s\nrename to %s\n' % (from_, to)
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return text + ''.join(f.get_diff() for f in self.get_changed_files())
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def apply(self):
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for old, new in self.get_renames():
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rename(old, new)
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for f in self.get_changed_files():
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f.apply()
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def _calculate_rename(path, new_name):
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name = basename(path)
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dir_ = dirname(path)
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if name in ('__init__.py', '__init__.pyi'):
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parent_dir = dirname(dir_)
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return dir_, join(parent_dir, new_name, name)
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ending = re.search(r'\.pyi?$', name).group(0)
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return path, join(dir_, new_name + ending)
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def rename(grammar, definitions, new_name):
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file_renames = set()
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file_tree_name_map = {}
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for d in definitions:
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tree_name = d._name.tree_name
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if d.type == 'module' and tree_name is None:
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file_renames.add(_calculate_rename(d.module_path, new_name))
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else:
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# This private access is ok in a way. It's not public to
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# protect Jedi users from seeing it.
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if tree_name is not None:
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fmap = file_tree_name_map.setdefault(d.module_path, {})
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fmap[tree_name] = tree_name.prefix + new_name
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return Refactoring(grammar, file_tree_name_map, file_renames)
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