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workspace.py
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workspace.py
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# Copyright 2017 Palantir Technologies, Inc.
import io
import logging
import pathlib
import mpfmc
import mpf
import os
import re
from mpf.core.utility_functions import Util
from mpf.file_interfaces.yaml_interface import YamlInterface
from mpf.file_interfaces.yaml_roundtrip import YamlRoundtrip
from mpf.parsers.event_reference_parser import EventReferenceParser, EventReference
from typing import List
from . import lsp, uris, _utils
log = logging.getLogger(__name__)
# TODO: this is not the best e.g. we capture numbers
RE_START_WORD = re.compile('[A-Za-z_0-9]*$')
RE_END_WORD = re.compile('^[A-Za-z_0-9]*')
TYPE_MACHINE = "machine"
TYPE_MODE = "mode"
TYPE_SHOW = "show"
class Workspace(object):
M_PUBLISH_DIAGNOSTICS = 'textDocument/publishDiagnostics'
M_APPLY_EDIT = 'workspace/applyEdit'
M_SHOW_MESSAGE = 'window/showMessage'
def __init__(self, root_uri, endpoint):
self._root_uri = root_uri
self._endpoint = endpoint
self._root_uri_scheme = uris.urlparse(self._root_uri)[0]
self._root_path = uris.to_fs_path(self._root_uri)
self._docs = {}
self._cached_config = {}
self.mpf_path = str(pathlib.Path(mpf.__file__).parent.absolute())
self.mc_path = str(pathlib.Path(mpfmc.__file__).parent.absolute())
self.config_path = os.path.join(self._root_path, "config")
self.mode_path = os.path.join(self._root_path, "modes")
self.show_path = os.path.join(self._root_path, "shows")
self._device_events = None
def get_root_document(self):
return self.get_document(uris.from_fs_path(os.path.join(self.config_path, "config.yaml")))
def get_mpf_config(self):
return self.get_document(uris.from_fs_path(os.path.join(self.mpf_path, "mpfconfig.yaml")))
def get_mc_config(self):
return self.get_document(uris.from_fs_path(os.path.join(self.mc_path, "mcconfig.yaml")))
def get_device_events(self) -> List[EventReference]:
if self._device_events is not None:
return self._device_events
event_parser = EventReferenceParser()
self._device_events = event_parser.get_events_from_path([self.mpf_path, self.mc_path, self._root_path])
return self._device_events
def get_complete_config(self):
if self._cached_config:
return self._cached_config
root_document = self.get_root_document()
config = self._load_document_and_subconfigs(self.get_mpf_config())
config = Util.dict_merge(config, self._load_document_and_subconfigs(root_document))
if "modes" in config:
for mode in config['modes']:
path = os.path.join(self.mode_path, mode, "config", "{}.yaml".format(mode))
if os.path.exists(path):
mode_document = self.get_document(uris.from_fs_path(path))
mode_config = self._load_document_and_subconfigs(mode_document)
mode_config.pop("mode", None)
config = Util.dict_merge(config, mode_config)
self._cached_config = config
return config
def _load_document_and_subconfigs(self, root_document):
config = root_document.config_simple
if 'config' in config:
for file in Util.string_to_list(config['config']):
path = os.path.join(os.path.split(root_document.path)[0], file)
if os.path.exists(path):
sub_document = self.get_document(uris.from_fs_path(path))
sub_config = self._load_document_and_subconfigs(sub_document)
config = Util.dict_merge(config, sub_config)
return config
@property
def documents(self):
return self._docs
@property
def root_path(self):
return self._root_path
@property
def root_uri(self):
return self._root_uri
def is_local(self):
return (self._root_uri_scheme == '' or self._root_uri_scheme == 'file') and os.path.exists(self._root_path)
def get_document(self, doc_uri):
"""Return a managed document if-present, else create one pointing at disk.
See https://github.com/Microsoft/language-server-protocol/issues/177
"""
doc = self._docs.get(doc_uri)
if doc:
return doc
doc = self._docs[doc_uri] = self._create_document(doc_uri)
return doc
def put_document(self, doc_uri, source, version=None):
self._docs[doc_uri] = self._create_document(doc_uri, source=source, version=version)
def rm_document(self, doc_uri):
self._docs.pop(doc_uri)
def update_document(self, doc_uri, change, version=None):
self._cached_config = {}
self._docs[doc_uri].apply_change(change)
self._docs[doc_uri].version = version
def apply_edit(self, edit):
return self._endpoint.request(self.M_APPLY_EDIT, {'edit': edit})
def publish_diagnostics(self, doc_uri, diagnostics):
self._endpoint.notify(self.M_PUBLISH_DIAGNOSTICS, params={'uri': doc_uri, 'diagnostics': diagnostics})
def show_message(self, message, msg_type=lsp.MessageType.Info):
self._endpoint.notify(self.M_SHOW_MESSAGE, params={'type': msg_type, 'message': message})
def source_roots(self, document_path):
"""Return the source roots for the given document."""
files = _utils.find_parents(self._root_path, document_path, ['config', 'modes']) or []
return list(set((os.path.dirname(project_file) for project_file in files))) or [self._root_path]
def _create_document(self, doc_uri, source=None, version=None):
path = uris.to_fs_path(doc_uri)
if not path.startswith(os.path.abspath(self.root_path) + os.sep) and \
not path.startswith(self.mpf_path + os.sep) and \
not path.startswith(self.mc_path + os.sep):
self.show_message("{} is not in workspace {}. MPF Language Server will not work.".format(path,
self.root_path))
if path.find(os.sep + 'shows' + os.sep) != -1:
config_type = TYPE_SHOW
elif path.startswith(self.mode_path + os.sep):
config_type = TYPE_MODE
else:
config_type = TYPE_MACHINE
return Document(
doc_uri, source=source, version=version, config_type=config_type
)
class Document(object):
def __init__(self, uri, config_type, source=None, version=None, local=True, extra_sys_path=None):
self.uri = uri
self.version = version
self.path = uris.to_fs_path(uri)
self.filename = os.path.basename(self.path)
self._local = local
self._source = source
self._extra_sys_path = extra_sys_path or []
self._config_simple = {}
self._config_roundtrip = {}
self._last_config_simple = {}
self._last_config_roundtrip = {}
self._loader_roundtrip = YamlRoundtrip()
self._loader_simple = YamlInterface()
self.config_type = config_type
def invalidate_config(self):
self._last_config_simple = {}
self._config_roundtrip = {}
@property
def parsing_failed(self):
return self._parsing_failed
@property
def config_roundtrip(self):
if not self._config_roundtrip:
self._load_config_roundtrip()
if not self._config_roundtrip:
if not self._last_config_roundtrip:
return {}
return self._last_config_roundtrip
else:
return self._config_roundtrip
def _load_config_roundtrip(self):
try:
self._config_roundtrip = self._loader_roundtrip.process(self.source)
except:
self._parsing_failed = True
else:
self._parsing_failed = False
self._last_config_roundtrip = self._config_roundtrip
@property
def config_simple(self):
if not self._config_simple:
self._load_config_simple()
if not self._config_simple:
if not self._last_config_simple:
return {}
return self._last_config_simple
else:
return self._config_simple
def _load_config_simple(self):
try:
self._config_simple = self._loader_simple.process(self.source)
except:
self._parsing_failed = True
else:
self._parsing_failed = False
self._last_config_simple = self._config_simple
def __str__(self):
return str(self.uri)
@property
def lines(self):
return self.source.splitlines(True)
@property
def source(self):
if self._source is None:
with io.open(self.path, 'r', encoding='utf-8') as f:
return f.read()
return self._source
def apply_change(self, change):
"""Apply a change to the document."""
text = change['text']
change_range = change.get('range')
if not change_range:
# The whole file has changed
self._source = text
self.invalidate_config()
return
start_line = change_range['start']['line']
start_col = change_range['start']['character']
end_line = change_range['end']['line']
end_col = change_range['end']['character']
# Check for an edit occuring at the very end of the file
if start_line == len(self.lines):
self._source = self.source + text
self.invalidate_config()
return
new = io.StringIO()
# Iterate over the existing document until we hit the edit range,
# at which point we write the new text, then loop until we hit
# the end of the range and continue writing.
for i, line in enumerate(self.lines):
if i < start_line:
new.write(line)
continue
if i > end_line:
new.write(line)
continue
if i == start_line:
new.write(line[:start_col])
new.write(text)
if i == end_line:
new.write(line[end_col:])
self._source = new.getvalue()
self.invalidate_config()
def offset_at_position(self, position):
"""Return the byte-offset pointed at by the given position."""
return position['character'] + len(''.join(self.lines[:position['line']]))
def word_at_position(self, position):
"""Get the word under the cursor returning the start and end positions."""
if position['line'] >= len(self.lines):
return ''
line = self.lines[position['line']]
i = position['character']
# Split word in two
start = line[:i]
end = line[i:]
# Take end of start and start of end to find word
# These are guaranteed to match, even if they match the empty string
m_start = RE_START_WORD.findall(start)
m_end = RE_END_WORD.findall(end)
return m_start[0] + m_end[-1]
def sys_path(self):
# Copy our extra sys path
path = list(self._extra_sys_path)
return path