pythonVSCode/pythonFiles/rope/base/pycore.py at master · modulexcite/pythonVSCode · GitHub

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import bisect

import difflib

import sys

import warnings

import rope.base.libutils

import rope.base.resourceobserver

import rope.base.resources

import rope.base.oi.doa

import rope.base.oi.objectinfo

import rope.base.oi.soa

from rope.base import builtins

from rope.base import exceptions

from rope.base import stdmods

from rope.base import taskhandle

from rope.base import utils

from rope.base.exceptions import ModuleNotFoundError

from rope.base.pyobjectsdef import PyModule, PyPackage

class PyCore(object):

def __init__(self, project):

self.project = project

self._init_resource_observer()

self.cache_observers = []

self.module_cache = _ModuleCache(self)

self.extension_cache = _ExtensionCache(self)

self.object_info = rope.base.oi.objectinfo.ObjectInfoManager(project)

self._init_python_files()

self._init_automatic_soa()

def _init_python_files(self):

self.python_matcher = None

patterns = self.project.prefs.get('python_files', None)

if patterns is not None:

self.python_matcher = rope.base.resources._ResourceMatcher()

self.python_matcher.set_patterns(patterns)

def _init_resource_observer(self):

callback = self._invalidate_resource_cache

observer = rope.base.resourceobserver.ResourceObserver(

changed=callback, moved=callback, removed=callback)

self.observer = \

rope.base.resourceobserver.FilteredResourceObserver(observer)

self.project.add_observer(self.observer)

def _init_automatic_soa(self):

if not self.automatic_soa:

return

callback = self._file_changed_for_soa

observer = rope.base.resourceobserver.ResourceObserver(

changed=callback, moved=callback, removed=callback)

self.project.add_observer(observer)

@property

def automatic_soa(self):

auto_soa = self.project.prefs.get('automatic_soi', None)

return self.project.prefs.get('automatic_soa', auto_soa)

def _file_changed_for_soa(self, resource, new_resource=None):

old_contents = self.project.history.\

contents_before_current_change(resource)

if old_contents is not None:

perform_soa_on_changed_scopes(self.project, resource, old_contents)

def is_python_file(self, resource):

if resource.is_folder():

return False

if self.python_matcher is None:

return resource.name.endswith('.py')

return self.python_matcher.does_match(resource)

@utils.deprecated('Use `project.get_module` instead')

def get_module(self, name, folder=None):

"""Returns a `PyObject` if the module was found."""

return self.project.get_module(name, folder)

def _builtin_submodules(self, modname):

result = {}

for extension in self.extension_modules:

if extension.startswith(modname + '.'):

name = extension[len(modname) + 1:]

if '.' not in name:

result[name] = self.builtin_module(extension)

return result

def builtin_module(self, name):

return self.extension_cache.get_pymodule(name)

@utils.deprecated('Use `project.get_relative_module` instead')

def get_relative_module(self, name, folder, level):

return self.project.get_relative_module(name, folder, level)

@utils.deprecated('Use `libutils.get_string_module` instead')

def get_string_module(self, code, resource=None, force_errors=False):

"""Returns a `PyObject` object for the given code

If `force_errors` is `True`, `exceptions.ModuleSyntaxError` is

raised if module has syntax errors. This overrides

``ignore_syntax_errors`` project config.

"""

return PyModule(self, code, resource, force_errors=force_errors)

@utils.deprecated('Use `libutils.get_string_scope` instead')

def get_string_scope(self, code, resource=None):

"""Returns a `Scope` object for the given code"""

return rope.base.libutils.get_string_scope(code, resource)

def _invalidate_resource_cache(self, resource, new_resource=None):

for observer in self.cache_observers:

observer(resource)

@utils.deprecated('Use `project.get_python_path_folders` instead')

def get_python_path_folders(self):

return self.project.get_python_path_folders()

@utils.deprecated('Use `project.find_module` instead')

def find_module(self, modname, folder=None):

"""Returns a resource corresponding to the given module

returns None if it can not be found

"""

return self.project.find_module(modname, folder)

@utils.deprecated('Use `project.find_relative_module` instead')

def find_relative_module(self, modname, folder, level):

return self.project.find_relative_module(modname, folder, level)

# INFO: It was decided not to cache source folders, since:

# - Does not take much time when the root folder contains

# packages, that is most of the time

# - We need a separate resource observer; `self.observer`

# does not get notified about module and folder creations

@utils.deprecated('Use `project.get_source_folders` instead')

def get_source_folders(self):

"""Returns project source folders"""

return self.project.get_source_folders()

def resource_to_pyobject(self, resource, force_errors=False):

return self.module_cache.get_pymodule(resource, force_errors)

@utils.deprecated('Use `project.get_python_files` instead')

def get_python_files(self):

"""Returns all python files available in the project"""

return self.project.get_python_files()

def _is_package(self, folder):

if folder.has_child('__init__.py') and \

not folder.get_child('__init__.py').is_folder():

return True

else:

return False

def _find_source_folders(self, folder):

for resource in folder.get_folders():

if self._is_package(resource):

return [folder]

result = []

for resource in folder.get_files():

if resource.name.endswith('.py'):

result.append(folder)

break

for resource in folder.get_folders():

result.extend(self._find_source_folders(resource))

return result

def run_module(self, resource, args=None, stdin=None, stdout=None):

"""Run `resource` module

Returns a `rope.base.oi.doa.PythonFileRunner` object for

controlling the process.

"""

perform_doa = self.project.prefs.get('perform_doi', True)

perform_doa = self.project.prefs.get('perform_doa', perform_doa)

receiver = self.object_info.doa_data_received

if not perform_doa:

receiver = None

runner = rope.base.oi.doa.PythonFileRunner(

self, resource, args, stdin, stdout, receiver)

runner.add_finishing_observer(self.module_cache.forget_all_data)

runner.run()

return runner

def analyze_module(self, resource, should_analyze=lambda py: True,

search_subscopes=lambda py: True, followed_calls=None):

"""Analyze `resource` module for static object inference

This function forces rope to analyze this module to collect

information about function calls. `should_analyze` is a

function that is called with a `PyDefinedObject` argument. If

it returns `True` the element is analyzed. If it is `None` or

returns `False` the element is not analyzed.

`search_subscopes` is like `should_analyze`; The difference is

that if it returns `False` the sub-scopes are all ignored.

That is it is assumed that `should_analyze` returns `False`

for all of its subscopes.

`followed_calls` override the value of ``soa_followed_calls``

project config.

"""

if followed_calls is None:

followed_calls = self.project.prefs.get('soa_followed_calls', 0)

pymodule = self.resource_to_pyobject(resource)

self.module_cache.forget_all_data()

rope.base.oi.soa.analyze_module(

self, pymodule, should_analyze, search_subscopes, followed_calls)

def get_classes(self, task_handle=taskhandle.NullTaskHandle()):

warnings.warn('`PyCore.get_classes()` is deprecated',

DeprecationWarning, stacklevel=2)

return []

def __str__(self):

return str(self.module_cache) + str(self.object_info)

@utils.deprecated('Use `libutils.modname` instead')

def modname(self, resource):

return rope.base.libutils.modname(resource)

@property

@utils.cacheit

def extension_modules(self):

result = set(self.project.prefs.get('extension_modules', []))

if self.project.prefs.get('import_dynload_stdmods', False):

result.update(stdmods.dynload_modules())

return result

class _ModuleCache(object):

def __init__(self, pycore):

self.pycore = pycore

self.module_map = {}

self.pycore.cache_observers.append(self._invalidate_resource)

self.observer = self.pycore.observer

def _invalidate_resource(self, resource):

if resource in self.module_map:

self.forget_all_data()

self.observer.remove_resource(resource)

del self.module_map[resource]

def get_pymodule(self, resource, force_errors=False):

if resource in self.module_map:

return self.module_map[resource]

if resource.is_folder():

result = PyPackage(self.pycore, resource,

force_errors=force_errors)

else:

result = PyModule(self.pycore, resource=resource,

force_errors=force_errors)

if result.has_errors:

return result

self.module_map[resource] = result

self.observer.add_resource(resource)

return result

def forget_all_data(self):

for pymodule in self.module_map.values():

pymodule._forget_concluded_data()

def __str__(self):

return 'PyCore caches %d PyModules\n' % len(self.module_map)

class _ExtensionCache(object):

def __init__(self, pycore):

self.pycore = pycore

self.extensions = {}

def get_pymodule(self, name):

if name == '__builtin__':

return builtins.builtins

allowed = self.pycore.extension_modules

if name not in self.extensions and name in allowed:

self.extensions[name] = builtins.BuiltinModule(name, self.pycore)

return self.extensions.get(name)

def perform_soa_on_changed_scopes(project, resource, old_contents):

pycore = project.pycore

if resource.exists() and pycore.is_python_file(resource):

try:

new_contents = resource.read()

# detecting changes in new_contents relative to old_contents

detector = _TextChangeDetector(new_contents, old_contents)

def search_subscopes(pydefined):

scope = pydefined.get_scope()

return detector.is_changed(scope.get_start(), scope.get_end())

def should_analyze(pydefined):

scope = pydefined.get_scope()

start = scope.get_start()

end = scope.get_end()

return detector.consume_changes(start, end)

pycore.analyze_module(resource, should_analyze, search_subscopes)

except exceptions.ModuleSyntaxError:

pass

class _TextChangeDetector(object):

def __init__(self, old, new):

self.old = old

self.new = new

self._set_diffs()

def _set_diffs(self):

differ = difflib.Differ()

self.lines = []

lineno = 0

for line in differ.compare(self.old.splitlines(True),

self.new.splitlines(True)):

if line.startswith(' '):

lineno += 1

elif line.startswith('-'):

lineno += 1

self.lines.append(lineno)

def is_changed(self, start, end):

"""Tell whether any of start till end lines have changed

The end points are inclusive and indices start from 1.

"""

left, right = self._get_changed(start, end)

if left < right:

return True

return False

def consume_changes(self, start, end):

"""Clear the changed status of lines from start till end"""

left, right = self._get_changed(start, end)

if left < right:

del self.lines[left:right]

return left < right

def _get_changed(self, start, end):

left = bisect.bisect_left(self.lines, start)

right = bisect.bisect_right(self.lines, end)

return left, right

pythonVSCode/pythonFiles/rope/base/pycore.py at master · modulexcite/pythonVSCode · GitHub

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