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import sys

import os

# Add the lib path to our sys path so jedi_language_server can find its references

EXTENSION_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

sys.path.insert(0, os.path.join(EXTENSION_ROOT, "pythonFiles", "lib", "python"))

import pygls.protocol

try:

unicode

except Exception:

unicode = str

def is_json_basic_type(obj):

"""Checks if the object is an int, float, bool, or str."""

if isinstance(obj, (int, float, bool, str)):

return True

return sys.version_info < (3,) and isinstance(obj, unicode)

def handle_null_fields(obj, obj_field_name=None):

"""Removes fields with a 'None' value.

The LS Client in VS Code expects optional fields that are not needed

to be omitted. Unfortunately, pygls uses 'null' in these instances.

"""

# This is a temporary workaround to address the following issues:

# https://github.com/microsoft/vscode-languageserver-node/issues/740#issuecomment-773967897

# https://github.com/pappasam/jedi-language-server/issues/60

# https://github.com/openlawlibrary/pygls/issues/145

# https://github.com/microsoft/vscode-languageserver-node/issues/740

if is_json_basic_type(obj):

return

elif isinstance(obj, list):

for o in obj:

handle_null_fields(o, obj_field_name)

return

elif isinstance(obj, dict):

for k, v in obj.items():

handle_null_fields(v, k)

important_attribute = lambda x: not x.startswith("_") and not callable(

getattr(obj, x)

)

for attr in filter(important_attribute, dir(obj)):

member = getattr(obj, attr)

if member is None:

# This is a special condition to handle VersionedTextDocumentIdentifier object.

# See issues:

# https://github.com/pappasam/jedi-language-server/issues/61

# https://github.com/openlawlibrary/pygls/issues/146

#

# The version field should either use `0` or the value received from `client`.

# Seems like using `null` or removing this causes VS Code to ignore

# code actions.

if (

attr == "version"

and obj_field_name == "textDocument"

and "uri" in dir(obj)

):

setattr(obj, "version", 0)

else:

delattr(obj, attr)

elif is_json_basic_type(member):

continue

else:

handle_null_fields(member, attr)

def patched_without_none_fields(resp):

"""Monkeypatch for `JsonRPCResponseMessage.without_none_fields` to remove `None` results."""

if resp.error is None:

del resp.error

if hasattr(resp, "result"):

handle_null_fields(resp.result)

else:

del resp.result

return resp

pygls.protocol.JsonRPCResponseMessage.without_none_fields = patched_without_none_fields

from jedi_language_server.cli import cli

sys.exit(cli())