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import asyncio
from typing import (
Dict,
Sequence,
Union,
Optional,
Any,
TypeVar,
Callable,
Mapping,
List,
)
from lsprotocol.types import (
DidOpenTextDocumentParams,
DidChangeTextDocumentParams,
TEXT_DOCUMENT_DID_CHANGE,
TEXT_DOCUMENT_DID_OPEN,
TEXT_DOCUMENT_COMPLETION,
CompletionList,
CompletionItem,
CompletionParams,
TEXT_DOCUMENT_HOVER,
TEXT_DOCUMENT_FOLDING_RANGE,
FoldingRange,
FoldingRangeParams,
TEXT_DOCUMENT_SEMANTIC_TOKENS_FULL,
SemanticTokensParams,
SemanticTokens,
Hover,
TEXT_DOCUMENT_CODE_ACTION,
Command,
CodeAction,
TextDocumentCodeActionRequest,
CodeActionParams,
SemanticTokensRegistrationOptions,
)
from debputy import __version__
from debputy.lsp.lsp_features import (
DIAGNOSTIC_HANDLERS,
COMPLETER_HANDLERS,
HOVER_HANDLERS,
SEMANTIC_TOKENS_FULL_HANDLERS,
CODE_ACTION_HANDLERS,
SEMANTIC_TOKENS_LEGEND,
)
from debputy.util import _info
_DOCUMENT_VERSION_TABLE: Dict[str, int] = {}
try:
from pygls.server import LanguageServer
DEBPUTY_LANGUAGE_SERVER = LanguageServer("debputy", f"v{__version__}")
except ImportError:
class Mock:
def feature(self, *args, **kwargs):
return lambda x: x
DEBPUTY_LANGUAGE_SERVER = Mock()
P = TypeVar("P")
R = TypeVar("R")
def is_doc_at_version(uri: str, version: int) -> bool:
dv = _DOCUMENT_VERSION_TABLE.get(uri)
return dv == version
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_DID_OPEN)
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_DID_CHANGE)
async def _open_or_changed_document(
ls: "LanguageServer",
params: Union[DidOpenTextDocumentParams, DidChangeTextDocumentParams],
) -> None:
version = params.text_document.version
doc_uri = params.text_document.uri
doc = ls.workspace.get_text_document(doc_uri)
_DOCUMENT_VERSION_TABLE[doc_uri] = version
handler = DIAGNOSTIC_HANDLERS.get(doc.language_id)
if handler is None:
_info(
f"Opened/Changed document: {doc.path} ({doc.language_id}) - no diagnostics handler"
)
return
_info(
f"Opened/Changed document: {doc.path} ({doc.language_id}) - running diagnostics for doc version {version}"
)
last_publish_count = -1
diagnostics_scanner = handler(ls, params)
async for diagnostics in diagnostics_scanner:
await asyncio.sleep(0)
if not is_doc_at_version(doc_uri, version):
# This basically happens with very edit, so lets not notify the client
# for that.
_info(
f"Cancel (obsolete) diagnostics for doc version {version}: document version changed"
)
break
if diagnostics is None or last_publish_count != len(diagnostics):
last_publish_count = len(diagnostics) if diagnostics is not None else 0
ls.publish_diagnostics(
doc.uri,
diagnostics,
)
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_COMPLETION)
def _completions(
ls: "LanguageServer",
params: CompletionParams,
) -> Optional[Union[CompletionList, Sequence[CompletionItem]]]:
return _dispatch_standard_handler(
ls,
params.text_document.uri,
params,
COMPLETER_HANDLERS,
"Complete request",
)
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_HOVER)
def _hover(
ls: "LanguageServer",
params: CompletionParams,
) -> Optional[Hover]:
return _dispatch_standard_handler(
ls,
params.text_document.uri,
params,
HOVER_HANDLERS,
"Hover doc request",
)
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_CODE_ACTION)
def _code_actions(
ls: "LanguageServer",
params: CodeActionParams,
) -> Optional[List[Union[Command, CodeAction]]]:
return _dispatch_standard_handler(
ls,
params.text_document.uri,
params,
CODE_ACTION_HANDLERS,
"Code action request",
)
@DEBPUTY_LANGUAGE_SERVER.feature(TEXT_DOCUMENT_FOLDING_RANGE)
def _folding_ranges(
ls: "LanguageServer",
params: FoldingRangeParams,
) -> Optional[Sequence[FoldingRange]]:
return _dispatch_standard_handler(
ls,
params.text_document.uri,
params,
HOVER_HANDLERS,
"Folding range request",
)
@DEBPUTY_LANGUAGE_SERVER.feature(
TEXT_DOCUMENT_SEMANTIC_TOKENS_FULL,
SemanticTokensRegistrationOptions(
SEMANTIC_TOKENS_LEGEND,
full=True,
),
)
def _semantic_tokens_full(
ls: "LanguageServer",
params: SemanticTokensParams,
) -> Optional[SemanticTokens]:
return _dispatch_standard_handler(
ls,
params.text_document.uri,
params,
SEMANTIC_TOKENS_FULL_HANDLERS,
"Semantic tokens request",
)
def _dispatch_standard_handler(
ls: "LanguageServer",
doc_uri: str,
params: P,
handler_table: Mapping[str, Callable[["LanguageServer", P], R]],
request_type: str,
) -> R:
doc = ls.workspace.get_text_document(doc_uri)
handler = handler_table.get(doc.language_id)
if handler is None:
_info(
f"{request_type} for document: {doc.path} ({doc.language_id}) - no handler"
)
return
_info(
f"{request_type} for document: {doc.path} ({doc.language_id}) - delegating to handler"
)
return handler(
ls,
params,
)
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