def get_diff(self):
old_lines = split_lines(self._module_node.get_code(), keepends=True)
new_lines = split_lines(self.get_new_code(), keepends=True)
# Add a newline at the end if it's missing. Otherwise the diff will be
# very weird. A `diff -u file1 file2` would show the string:
#
# \ No newline at end of file
#
# This is not necessary IMO, because Medi does not really play with
# newlines and the ending newline does not really matter in Python
# files. ~dave
if old_lines[-1] != '':
old_lines[-1] += '\n'
if new_lines[-1] != '':
new_lines[-1] += '\n'
project_path = self._inference_state.project._path
if self._from_path is None:
from_p = ''
else:
from_p = relpath(self._from_path, project_path)
if self._to_path is None:
to_p = ''
else:
to_p = relpath(self._to_path, project_path)
diff = difflib.unified_diff(
old_lines,
new_lines,
fromfile=from_p,
tofile=to_p,
)
# Apparently there's a space at the end of the diff - for whatever
# reason.
return ''.join(diff).rstrip(' ')
def _split_prefix_at(leaf, until_line):
"""
Returns a tuple of the leaf's prefix, split at the until_line
position.
"""
# second means the second returned part
second_line_count = leaf.start_pos[0] - until_line
lines = split_lines(leaf.prefix, keepends=True)
return ''.join(lines[:-second_line_count]), ''.join(
lines[-second_line_count:])
def get_desired_result(self):
if platform.system().lower() == 'windows' and self.type == 'diff':
# Windows uses backslashes to separate paths.
lines = split_lines(self._desired_result, keepends=True)
for i, line in enumerate(lines):
if re.search(' import_tree/', line):
lines[i] = line.replace('/', '\\')
return ''.join(lines)
return self._desired_result
def cut_value_at_position(leaf, position):
"""
Cuts of the value of the leaf at position
"""
lines = split_lines(leaf.value,
keepends=True)[:position[0] - leaf.line + 1]
column = position[1]
if leaf.line == position[0]:
column -= leaf.column
if not lines:
return ''
lines[-1] = lines[-1][:column]
return ''.join(lines)
def _replace(nodes,
expression_replacement,
extracted,
pos,
insert_before_leaf=None,
remaining_prefix=None):
# Now try to replace the nodes found with a variable and move the code
# before the current statement.
definition = _get_parent_definition(nodes[0])
if insert_before_leaf is None:
insert_before_leaf = definition.get_first_leaf()
first_node_leaf = nodes[0].get_first_leaf()
lines = split_lines(insert_before_leaf.prefix, keepends=True)
if first_node_leaf is insert_before_leaf:
if remaining_prefix is not None:
# The remaining prefix has already been calculated.
lines[:-1] = remaining_prefix
lines[-1:-1] = [indent_block(extracted, lines[-1]) + '\n']
extracted_prefix = ''.join(lines)
replacement_dct = {}
if first_node_leaf is insert_before_leaf:
replacement_dct[nodes[0]] = extracted_prefix + expression_replacement
else:
if remaining_prefix is None:
p = first_node_leaf.prefix
else:
p = remaining_prefix + _get_indentation(nodes[0])
replacement_dct[nodes[0]] = p + expression_replacement
replacement_dct[
insert_before_leaf] = extracted_prefix + insert_before_leaf.value
for node in nodes[1:]:
replacement_dct[node] = ''
return replacement_dct
def _remove_indent_of_prefix(prefix):
r"""
Removes the last indentation of a prefix, e.g. " \n \n " becomes " \n \n".
"""
return ''.join(split_lines(prefix, keepends=True)[:-1])
def _get_indentation(node):
return split_lines(node.get_first_leaf().prefix)[-1]
def __init__(self, code=None, line=None, column=None, path=None,
encoding=None, sys_path=None, environment=None,
project=None, source=None, language="python"):
self._orig_path = path
# An empty path (also empty string) should always result in no path.
self.path = os.path.abspath(path) if path else None
self.language = language
self.grammar = marso.load_grammar(language=self.language)
if encoding is None:
encoding = 'utf-8'
else:
warnings.warn(
"Deprecated since version 0.17.0. You should cast to valid "
"unicode yourself, especially if you are not using utf-8.",
DeprecationWarning,
stacklevel=2
)
if line is not None:
warnings.warn(
"Providing the line is now done in the functions themselves "
"like `Script(...).complete(line, column)`",
DeprecationWarning,
stacklevel=2
)
if column is not None:
warnings.warn(
"Providing the column is now done in the functions themselves "
"like `Script(...).complete(line, column)`",
DeprecationWarning,
stacklevel=2
)
if source is not None:
code = source
warnings.warn(
"Use the code keyword argument instead.",
DeprecationWarning,
stacklevel=2
)
if code is None:
# TODO add a better warning than the traceback!
with open(path, 'rb') as f:
code = f.read()
if sys_path is not None and not is_py3:
sys_path = list(map(force_unicode, sys_path))
if project is None:
# Load the Python grammar of the current interpreter.
project = get_default_project(
self.language,
os.path.dirname(self.path) if path else None
)
# TODO deprecate and remove sys_path from the Script API.
if sys_path is not None:
project._sys_path = sys_path
warnings.warn(
"Deprecated since version 0.17.0. Use the project API instead, "
"which means Script(project=Project(dir, sys_path=sys_path)) instead.",
DeprecationWarning,
stacklevel=2
)
self._inference_state = InferenceState(
project, environment=environment, script_path=self.path
)
debug.speed('init')
self._module_node, code = self._inference_state.parse_and_get_code(
code=code,
path=self.path,
encoding=encoding,
use_latest_grammar=path and path.endswith('.pyi'),
cache=False, # No disk cache, because the current script often changes.
diff_cache=settings.fast_parser,
cache_path=settings.cache_directory,
)
debug.speed('parsed')
self._code_lines = marso.split_lines(code, keepends=True)
self._code = code
self._pos = line, column
cache.clear_time_caches()
debug.reset_time()
