Você não pode selecionar mais de 25 tópicos
Os tópicos devem começar com uma letra ou um número, podem incluir traços ('-') e podem ter até 35 caracteres.
270 linhas
8.7 KiB
270 linhas
8.7 KiB
"""Method implementations for the Elpy JSON-RPC server.
|
|
|
|
This file implements the methods exported by the JSON-RPC server. It
|
|
handles backend selection and passes methods on to the selected
|
|
backend.
|
|
|
|
"""
|
|
import io
|
|
import os
|
|
import pydoc
|
|
|
|
from elpy.pydocutils import get_pydoc_completions
|
|
from elpy.rpc import JSONRPCServer, Fault
|
|
from elpy.auto_pep8 import fix_code
|
|
from elpy.yapfutil import fix_code as fix_code_with_yapf
|
|
from elpy.blackutil import fix_code as fix_code_with_black
|
|
|
|
|
|
try:
|
|
from elpy import jedibackend
|
|
except ImportError: # pragma: no cover
|
|
jedibackend = None
|
|
|
|
|
|
class ElpyRPCServer(JSONRPCServer):
|
|
"""The RPC server for elpy.
|
|
|
|
See the rpc_* methods for exported method documentation.
|
|
|
|
"""
|
|
def __init__(self, *args, **kwargs):
|
|
super(ElpyRPCServer, self).__init__(*args, **kwargs)
|
|
self.backend = None
|
|
self.project_root = None
|
|
|
|
def _call_backend(self, method, default, *args, **kwargs):
|
|
"""Call the backend method with args.
|
|
|
|
If there is currently no backend, return default."""
|
|
meth = getattr(self.backend, method, None)
|
|
if meth is None:
|
|
return default
|
|
else:
|
|
return meth(*args, **kwargs)
|
|
|
|
def rpc_echo(self, *args):
|
|
"""Return the arguments.
|
|
|
|
This is a simple test method to see if the protocol is
|
|
working.
|
|
|
|
"""
|
|
return args
|
|
|
|
def rpc_init(self, options):
|
|
self.project_root = options["project_root"]
|
|
|
|
if jedibackend:
|
|
self.backend = jedibackend.JediBackend(self.project_root)
|
|
else:
|
|
self.backend = None
|
|
|
|
return {
|
|
'jedi_available': (self.backend is not None)
|
|
}
|
|
|
|
def rpc_get_calltip(self, filename, source, offset):
|
|
"""Get the calltip for the function at the offset.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_calltip", None, filename,
|
|
get_source(source), offset)
|
|
|
|
def rpc_get_oneline_docstring(self, filename, source, offset):
|
|
"""Get a oneline docstring for the symbol at the offset.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_oneline_docstring", None, filename,
|
|
get_source(source), offset)
|
|
|
|
def rpc_get_completions(self, filename, source, offset):
|
|
"""Get a list of completion candidates for the symbol at offset.
|
|
|
|
"""
|
|
results = self._call_backend("rpc_get_completions", [], filename,
|
|
get_source(source), offset)
|
|
# Uniquify by name
|
|
results = list(dict((res['name'], res) for res in results)
|
|
.values())
|
|
results.sort(key=lambda cand: _pysymbol_key(cand["name"]))
|
|
return results
|
|
|
|
def rpc_get_completion_docstring(self, completion):
|
|
"""Return documentation for a previously returned completion.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_completion_docstring",
|
|
None, completion)
|
|
|
|
def rpc_get_completion_location(self, completion):
|
|
"""Return the location for a previously returned completion.
|
|
|
|
This returns a list of [file name, line number].
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_completion_location", None,
|
|
completion)
|
|
|
|
def rpc_get_definition(self, filename, source, offset):
|
|
"""Get the location of the definition for the symbol at the offset.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_definition", None, filename,
|
|
get_source(source), offset)
|
|
|
|
def rpc_get_assignment(self, filename, source, offset):
|
|
"""Get the location of the assignment for the symbol at the offset.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_assignment", None, filename,
|
|
get_source(source), offset)
|
|
|
|
def rpc_get_docstring(self, filename, source, offset):
|
|
"""Get the docstring for the symbol at the offset.
|
|
|
|
"""
|
|
return self._call_backend("rpc_get_docstring", None, filename,
|
|
get_source(source), offset)
|
|
|
|
def rpc_get_pydoc_completions(self, name=None):
|
|
"""Return a list of possible strings to pass to pydoc.
|
|
|
|
If name is given, the strings are under name. If not, top
|
|
level modules are returned.
|
|
|
|
"""
|
|
return get_pydoc_completions(name)
|
|
|
|
def rpc_get_pydoc_documentation(self, symbol):
|
|
"""Get the Pydoc documentation for the given symbol.
|
|
|
|
Uses pydoc and can return a string with backspace characters
|
|
for bold highlighting.
|
|
|
|
"""
|
|
try:
|
|
docstring = pydoc.render_doc(str(symbol),
|
|
"Elpy Pydoc Documentation for %s",
|
|
False)
|
|
except (ImportError, pydoc.ErrorDuringImport):
|
|
return None
|
|
else:
|
|
if isinstance(docstring, bytes):
|
|
docstring = docstring.decode("utf-8", "replace")
|
|
return docstring
|
|
|
|
def rpc_get_refactor_options(self, filename, start, end=None):
|
|
"""Return a list of possible refactoring options.
|
|
|
|
This list will be filtered depending on whether it's
|
|
applicable at the point START and possibly the region between
|
|
START and END.
|
|
|
|
"""
|
|
try:
|
|
from elpy import refactor
|
|
except:
|
|
raise ImportError("Rope not installed, refactorings unavailable")
|
|
ref = refactor.Refactor(self.project_root, filename)
|
|
return ref.get_refactor_options(start, end)
|
|
|
|
def rpc_refactor(self, filename, method, args):
|
|
"""Return a list of changes from the refactoring action.
|
|
|
|
A change is a dictionary describing the change. See
|
|
elpy.refactor.translate_changes for a description.
|
|
|
|
"""
|
|
try:
|
|
from elpy import refactor
|
|
except:
|
|
raise ImportError("Rope not installed, refactorings unavailable")
|
|
if args is None:
|
|
args = ()
|
|
ref = refactor.Refactor(self.project_root, filename)
|
|
return ref.get_changes(method, *args)
|
|
|
|
def rpc_get_usages(self, filename, source, offset):
|
|
"""Get usages for the symbol at point.
|
|
|
|
"""
|
|
source = get_source(source)
|
|
if hasattr(self.backend, "rpc_get_usages"):
|
|
return self.backend.rpc_get_usages(filename, source, offset)
|
|
else:
|
|
raise Fault("get_usages not implemented by current backend",
|
|
code=400)
|
|
|
|
def rpc_get_names(self, filename, source, offset):
|
|
"""Get all possible names
|
|
|
|
"""
|
|
source = get_source(source)
|
|
if hasattr(self.backend, "rpc_get_names"):
|
|
return self.backend.rpc_get_names(filename, source, offset)
|
|
else:
|
|
raise Fault("get_names not implemented by current backend",
|
|
code=400)
|
|
|
|
def rpc_fix_code(self, source, directory):
|
|
"""Formats Python code to conform to the PEP 8 style guide.
|
|
|
|
"""
|
|
source = get_source(source)
|
|
return fix_code(source, directory)
|
|
|
|
def rpc_fix_code_with_yapf(self, source, directory):
|
|
"""Formats Python code to conform to the PEP 8 style guide.
|
|
|
|
"""
|
|
source = get_source(source)
|
|
return fix_code_with_yapf(source, directory)
|
|
|
|
def rpc_fix_code_with_black(self, source, directory):
|
|
"""Formats Python code to conform to the PEP 8 style guide.
|
|
|
|
"""
|
|
source = get_source(source)
|
|
return fix_code_with_black(source, directory)
|
|
|
|
|
|
def get_source(fileobj):
|
|
"""Translate fileobj into file contents.
|
|
|
|
fileobj is either a string or a dict. If it's a string, that's the
|
|
file contents. If it's a string, then the filename key contains
|
|
the name of the file whose contents we are to use.
|
|
|
|
If the dict contains a true value for the key delete_after_use,
|
|
the file should be deleted once read.
|
|
|
|
"""
|
|
if not isinstance(fileobj, dict):
|
|
return fileobj
|
|
else:
|
|
try:
|
|
with io.open(fileobj["filename"], encoding="utf-8",
|
|
errors="ignore") as f:
|
|
return f.read()
|
|
finally:
|
|
if fileobj.get('delete_after_use'):
|
|
try:
|
|
os.remove(fileobj["filename"])
|
|
except: # pragma: no cover
|
|
pass
|
|
|
|
|
|
def _pysymbol_key(name):
|
|
"""Return a sortable key index for name.
|
|
|
|
Sorting is case-insensitive, with the first underscore counting as
|
|
worse than any character, but subsequent underscores do not. This
|
|
means that dunder symbols (like __init__) are sorted after symbols
|
|
that start with an alphabetic character, but before those that
|
|
start with only a single underscore.
|
|
|
|
"""
|
|
if name.startswith("_"):
|
|
name = "~" + name[1:]
|
|
return name.lower()
|