362 lines
13 KiB
Python
362 lines
13 KiB
Python
import rope.base.evaluate
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from rope.base import libutils
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from rope.base import (change, pyobjects, exceptions, pynames, worder,
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codeanalyze)
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from rope.refactor import sourceutils, importutils, functionutils, suites
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def create_generate(kind, project, resource, offset):
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"""A factory for creating `Generate` objects
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`kind` can be 'variable', 'function', 'class', 'module' or
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'package'.
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"""
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generate = eval('Generate' + kind.title())
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return generate(project, resource, offset)
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def create_module(project, name, sourcefolder=None):
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"""Creates a module and returns a `rope.base.resources.File`"""
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if sourcefolder is None:
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sourcefolder = project.root
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packages = name.split('.')
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parent = sourcefolder
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for package in packages[:-1]:
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parent = parent.get_child(package)
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return parent.create_file(packages[-1] + '.py')
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def create_package(project, name, sourcefolder=None):
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"""Creates a package and returns a `rope.base.resources.Folder`"""
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if sourcefolder is None:
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sourcefolder = project.root
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packages = name.split('.')
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parent = sourcefolder
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for package in packages[:-1]:
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parent = parent.get_child(package)
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made_packages = parent.create_folder(packages[-1])
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made_packages.create_file('__init__.py')
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return made_packages
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class _Generate(object):
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def __init__(self, project, resource, offset):
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self.project = project
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self.resource = resource
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self.info = self._generate_info(project, resource, offset)
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self.name = self.info.get_name()
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self._check_exceptional_conditions()
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def _generate_info(self, project, resource, offset):
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return _GenerationInfo(project.pycore, resource, offset)
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def _check_exceptional_conditions(self):
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if self.info.element_already_exists():
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raise exceptions.RefactoringError(
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'Element <%s> already exists.' % self.name)
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if not self.info.primary_is_found():
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raise exceptions.RefactoringError(
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'Cannot determine the scope <%s> should be defined in.' %
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self.name)
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def get_changes(self):
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changes = change.ChangeSet('Generate %s <%s>' %
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(self._get_element_kind(), self.name))
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indents = self.info.get_scope_indents()
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blanks = self.info.get_blank_lines()
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base_definition = sourceutils.fix_indentation(self._get_element(),
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indents)
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definition = '\n' * blanks[0] + base_definition + '\n' * blanks[1]
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resource = self.info.get_insertion_resource()
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start, end = self.info.get_insertion_offsets()
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collector = codeanalyze.ChangeCollector(resource.read())
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collector.add_change(start, end, definition)
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changes.add_change(change.ChangeContents(
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resource, collector.get_changed()))
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return changes
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def get_location(self):
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return (self.info.get_insertion_resource(),
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self.info.get_insertion_lineno())
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def _get_element_kind(self):
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raise NotImplementedError()
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def _get_element(self):
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raise NotImplementedError()
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class GenerateFunction(_Generate):
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def _generate_info(self, project, resource, offset):
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return _FunctionGenerationInfo(project.pycore, resource, offset)
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def _get_element(self):
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decorator = ''
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args = []
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if self.info.is_static_method():
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decorator = '@staticmethod\n'
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if self.info.is_method() or self.info.is_constructor() or \
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self.info.is_instance():
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args.append('self')
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args.extend(self.info.get_passed_args())
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definition = '%sdef %s(%s):\n pass\n' % (decorator, self.name,
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', '.join(args))
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return definition
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def _get_element_kind(self):
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return 'Function'
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class GenerateVariable(_Generate):
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def _get_element(self):
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return '%s = None\n' % self.name
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def _get_element_kind(self):
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return 'Variable'
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class GenerateClass(_Generate):
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def _get_element(self):
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return 'class %s(object):\n pass\n' % self.name
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def _get_element_kind(self):
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return 'Class'
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class GenerateModule(_Generate):
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def get_changes(self):
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package = self.info.get_package()
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changes = change.ChangeSet('Generate Module <%s>' % self.name)
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new_resource = self.project.get_file('%s/%s.py' %
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(package.path, self.name))
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if new_resource.exists():
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raise exceptions.RefactoringError(
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'Module <%s> already exists' % new_resource.path)
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changes.add_change(change.CreateResource(new_resource))
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changes.add_change(_add_import_to_module(
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self.project, self.resource, new_resource))
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return changes
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def get_location(self):
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package = self.info.get_package()
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return (package.get_child('%s.py' % self.name), 1)
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class GeneratePackage(_Generate):
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def get_changes(self):
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package = self.info.get_package()
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changes = change.ChangeSet('Generate Package <%s>' % self.name)
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new_resource = self.project.get_folder('%s/%s' %
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(package.path, self.name))
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if new_resource.exists():
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raise exceptions.RefactoringError(
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'Package <%s> already exists' % new_resource.path)
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changes.add_change(change.CreateResource(new_resource))
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changes.add_change(_add_import_to_module(
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self.project, self.resource, new_resource))
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child = self.project.get_folder(package.path + '/' + self.name)
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changes.add_change(change.CreateFile(child, '__init__.py'))
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return changes
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def get_location(self):
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package = self.info.get_package()
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child = package.get_child(self.name)
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return (child.get_child('__init__.py'), 1)
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def _add_import_to_module(project, resource, imported):
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pymodule = project.get_pymodule(resource)
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import_tools = importutils.ImportTools(project)
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module_imports = import_tools.module_imports(pymodule)
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module_name = libutils.modname(imported)
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new_import = importutils.NormalImport(((module_name, None), ))
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module_imports.add_import(new_import)
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return change.ChangeContents(resource, module_imports.get_changed_source())
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class _GenerationInfo(object):
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def __init__(self, pycore, resource, offset):
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self.pycore = pycore
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self.resource = resource
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self.offset = offset
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self.source_pymodule = self.pycore.project.get_pymodule(resource)
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finder = rope.base.evaluate.ScopeNameFinder(self.source_pymodule)
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self.primary, self.pyname = finder.get_primary_and_pyname_at(offset)
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self._init_fields()
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def _init_fields(self):
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self.source_scope = self._get_source_scope()
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self.goal_scope = self._get_goal_scope()
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self.goal_pymodule = self._get_goal_module(self.goal_scope)
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def _get_goal_scope(self):
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if self.primary is None:
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return self._get_source_scope()
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pyobject = self.primary.get_object()
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if isinstance(pyobject, pyobjects.PyDefinedObject):
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return pyobject.get_scope()
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elif isinstance(pyobject.get_type(), pyobjects.PyClass):
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return pyobject.get_type().get_scope()
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def _get_goal_module(self, scope):
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if scope is None:
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return
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while scope.parent is not None:
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scope = scope.parent
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return scope.pyobject
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def _get_source_scope(self):
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module_scope = self.source_pymodule.get_scope()
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lineno = self.source_pymodule.lines.get_line_number(self.offset)
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return module_scope.get_inner_scope_for_line(lineno)
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def get_insertion_lineno(self):
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lines = self.goal_pymodule.lines
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if self.goal_scope == self.source_scope:
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line_finder = self.goal_pymodule.logical_lines
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lineno = lines.get_line_number(self.offset)
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lineno = line_finder.logical_line_in(lineno)[0]
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root = suites.ast_suite_tree(self.goal_scope.pyobject.get_ast())
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suite = root.find_suite(lineno)
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indents = sourceutils.get_indents(lines, lineno)
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while self.get_scope_indents() < indents:
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lineno = suite.get_start()
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indents = sourceutils.get_indents(lines, lineno)
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suite = suite.parent
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return lineno
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else:
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return min(self.goal_scope.get_end() + 1, lines.length())
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def get_insertion_resource(self):
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return self.goal_pymodule.get_resource()
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def get_insertion_offsets(self):
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if self.goal_scope.get_kind() == 'Class':
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start, end = sourceutils.get_body_region(self.goal_scope.pyobject)
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if self.goal_pymodule.source_code[start:end].strip() == 'pass':
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return start, end
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lines = self.goal_pymodule.lines
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start = lines.get_line_start(self.get_insertion_lineno())
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return (start, start)
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def get_scope_indents(self):
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if self.goal_scope.get_kind() == 'Module':
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return 0
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return sourceutils.get_indents(self.goal_pymodule.lines,
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self.goal_scope.get_start()) + 4
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def get_blank_lines(self):
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if self.goal_scope.get_kind() == 'Module':
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base_blanks = 2
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if self.goal_pymodule.source_code.strip() == '':
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base_blanks = 0
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if self.goal_scope.get_kind() == 'Class':
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base_blanks = 1
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if self.goal_scope.get_kind() == 'Function':
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base_blanks = 0
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if self.goal_scope == self.source_scope:
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return (0, base_blanks)
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return (base_blanks, 0)
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def get_package(self):
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primary = self.primary
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if self.primary is None:
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return self.pycore.project.get_source_folders()[0]
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if isinstance(primary.get_object(), pyobjects.PyPackage):
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return primary.get_object().get_resource()
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raise exceptions.RefactoringError(
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'A module/package can be only created in a package.')
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def primary_is_found(self):
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return self.goal_scope is not None
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def element_already_exists(self):
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if self.pyname is None or isinstance(self.pyname, pynames.UnboundName):
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return False
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return self.get_name() in self.goal_scope.get_defined_names()
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def get_name(self):
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return worder.get_name_at(self.resource, self.offset)
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class _FunctionGenerationInfo(_GenerationInfo):
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def _get_goal_scope(self):
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if self.is_constructor():
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return self.pyname.get_object().get_scope()
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if self.is_instance():
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return self.pyname.get_object().get_type().get_scope()
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if self.primary is None:
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return self._get_source_scope()
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pyobject = self.primary.get_object()
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if isinstance(pyobject, pyobjects.PyDefinedObject):
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return pyobject.get_scope()
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elif isinstance(pyobject.get_type(), pyobjects.PyClass):
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return pyobject.get_type().get_scope()
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def element_already_exists(self):
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if self.pyname is None or isinstance(self.pyname, pynames.UnboundName):
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return False
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return self.get_name() in self.goal_scope.get_defined_names()
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def is_static_method(self):
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return self.primary is not None and \
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isinstance(self.primary.get_object(), pyobjects.PyClass)
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def is_method(self):
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return self.primary is not None and \
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isinstance(self.primary.get_object().get_type(), pyobjects.PyClass)
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def is_constructor(self):
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return self.pyname is not None and \
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isinstance(self.pyname.get_object(), pyobjects.PyClass)
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def is_instance(self):
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if self.pyname is None:
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return False
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pyobject = self.pyname.get_object()
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return isinstance(pyobject.get_type(), pyobjects.PyClass)
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def get_name(self):
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if self.is_constructor():
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return '__init__'
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if self.is_instance():
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return '__call__'
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return worder.get_name_at(self.resource, self.offset)
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def get_passed_args(self):
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result = []
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source = self.source_pymodule.source_code
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finder = worder.Worder(source)
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if finder.is_a_function_being_called(self.offset):
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start, end = finder.get_primary_range(self.offset)
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parens_start, parens_end = finder.get_word_parens_range(end - 1)
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call = source[start:parens_end]
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parser = functionutils._FunctionParser(call, False)
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args, keywords = parser.get_parameters()
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for arg in args:
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if self._is_id(arg):
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result.append(arg)
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else:
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result.append('arg%d' % len(result))
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for name, value in keywords:
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result.append(name)
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return result
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def _is_id(self, arg):
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def id_or_underline(c):
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return c.isalpha() or c == '_'
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for c in arg:
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if not id_or_underline(c) and not c.isdigit():
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return False
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return id_or_underline(arg[0])
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