Use PDM (#66)
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Regen
259
cmake_language_server/server.py
Normal file
259
cmake_language_server/server.py
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import logging
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import re
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import shutil
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import subprocess
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from pathlib import Path
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from typing import Any, Callable, List, Optional, Tuple
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from pygls.lsp.methods import (
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COMPLETION,
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FORMATTING,
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HOVER,
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INITIALIZE,
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INITIALIZED,
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TEXT_DOCUMENT_DID_SAVE,
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)
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from pygls.lsp.types import (
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CompletionItem,
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CompletionItemKind,
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CompletionList,
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CompletionOptions,
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CompletionParams,
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CompletionTriggerKind,
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DocumentFormattingParams,
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Hover,
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InitializeParams,
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MarkupContent,
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MarkupKind,
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Position,
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Range,
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TextDocumentPositionParams,
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TextDocumentSaveRegistrationOptions,
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TextEdit,
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)
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from pygls.server import LanguageServer
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from .api import API
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logger = logging.getLogger(__name__)
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class CMakeLanguageServer(LanguageServer):
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_api: Optional[API]
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def __init__(self, *args: Any) -> None:
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super().__init__(*args)
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self._api = None
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@self.feature(INITIALIZE)
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def initialize(params: InitializeParams) -> None:
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opts = params.initialization_options
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cmake = getattr(opts, "cmakeExecutable", "cmake")
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builddir = getattr(opts, "buildDirectory", "")
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logging.info(f"cmakeExecutable={cmake}, buildDirectory={builddir}")
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self._api = API(cmake, Path(builddir))
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self._api.parse_doc()
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trigger_characters = ["{", "("]
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@self.feature(
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COMPLETION, CompletionOptions(trigger_characters=trigger_characters)
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)
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def completions(params: CompletionParams) -> CompletionList:
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assert self._api is not None
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if (
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params.context is not None
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and params.context.trigger_kind
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== CompletionTriggerKind.TriggerCharacter
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):
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token = ""
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trigger = params.context.trigger_character
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else:
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line = self._cursor_line(params.text_document.uri, params.position)
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idx = params.position.character - 1
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if 0 <= idx < len(line) and line[idx] in trigger_characters:
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token = ""
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trigger = line[idx]
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else:
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word = self._cursor_word(
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params.text_document.uri, params.position, False
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)
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token = "" if word is None else word[0]
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trigger = None
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items: List[CompletionItem] = []
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if trigger is None:
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commands = self._api.search_command(token)
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items.extend(
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CompletionItem(
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label=x,
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kind=CompletionItemKind.Function,
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documentation=self._api.get_command_doc(x),
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insert_text=x,
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)
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for x in commands
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)
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if trigger is None or trigger == "{":
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variables = self._api.search_variable(token)
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items.extend(
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CompletionItem(
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label=x,
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kind=CompletionItemKind.Variable,
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documentation=self._api.get_variable_doc(x),
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insert_text=x,
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)
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for x in variables
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)
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if trigger is None:
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targets = self._api.search_target(token)
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items.extend(
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CompletionItem(
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label=x, kind=CompletionItemKind.Class, insert_text=x
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)
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for x in targets
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)
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if trigger == "(":
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func = self._cursor_function(params.text_document.uri, params.position)
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if func is not None:
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func = func.lower()
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if func == "include":
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modules = self._api.search_module(token, False)
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items.extend(
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CompletionItem(
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label=x,
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kind=CompletionItemKind.Module,
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documentation=self._api.get_module_doc(x, False),
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insert_text=x,
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)
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for x in modules
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)
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elif func == "find_package":
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modules = self._api.search_module(token, True)
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items.extend(
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CompletionItem(
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label=x,
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kind=CompletionItemKind.Module,
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documentation=self._api.get_module_doc(x, True),
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insert_text=x,
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)
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for x in modules
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)
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return CompletionList(is_incomplete=False, items=items)
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if shutil.which("cmake-format") is not None:
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@self.feature(FORMATTING)
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def formatting(
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params: DocumentFormattingParams,
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) -> Optional[List[TextEdit]]:
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doc = self.workspace.get_document(params.text_document.uri)
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content = doc.source
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formatted = subprocess.check_output(
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["cmake-format", "-"],
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cwd=str(Path(doc.path).parent),
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input=content,
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universal_newlines=True,
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)
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lines = content.count("\n")
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return [
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TextEdit(
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range=Range(
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start=Position(line=0, character=0),
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end=Position(line=lines + 1, character=0),
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),
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new_text=formatted,
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)
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]
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@self.feature(HOVER)
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def hover(params: TextDocumentPositionParams) -> Optional[Hover]:
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assert self._api is not None
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api = self._api
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word = self._cursor_word(params.text_document.uri, params.position, True)
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if not word:
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return None
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candidates: List[Callable[[str], Optional[str]]] = [
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lambda x: api.get_command_doc(x.lower()),
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lambda x: api.get_variable_doc(x),
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lambda x: api.get_module_doc(x, False),
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lambda x: api.get_module_doc(x, True),
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]
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for c in candidates:
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doc = c(word[0])
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if doc is None:
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continue
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return Hover(
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contents=MarkupContent(kind=MarkupKind.Markdown, value=doc),
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range=word[1],
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)
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return None
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@self.thread()
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@self.feature(
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TEXT_DOCUMENT_DID_SAVE,
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TextDocumentSaveRegistrationOptions(include_text=False),
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)
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@self.feature(INITIALIZED)
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def run_cmake(*args: Any) -> None:
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assert self._api is not None
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if self._api.query():
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self._api.read_reply()
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def _cursor_function(self, uri: str, position: Position) -> Optional[str]:
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doc = self.workspace.get_document(uri)
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lines = doc.source.split("\n")[: position.line + 1]
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lines[-1] = lines[-1][: position.character - 1].strip()
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words = re.split(r"[\s\n()]+", "\n".join(lines))
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return words[-1] if words else None
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def _cursor_line(self, uri: str, position: Position) -> str:
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doc = self.workspace.get_document(uri)
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content = doc.source
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line = content.split("\n")[position.line]
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return str(line)
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def _cursor_word(
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self, uri: str, position: Position, include_all: bool = True
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) -> Optional[Tuple[str, Range]]:
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line = self._cursor_line(uri, position)
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cursor = position.character
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for m in re.finditer(r"\w+", line):
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end = m.end() if include_all else cursor
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if m.start() <= cursor <= m.end():
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word = (
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line[m.start() : end],
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Range(
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start=Position(line=position.line, character=m.start()),
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end=Position(line=position.line, character=end),
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),
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)
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return word
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return None
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def main() -> None:
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from argparse import ArgumentParser
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from . import __version__
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parser = ArgumentParser(description="CMake Language Server")
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parser.add_argument(
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"--version", action="version", version=f"%(prog)s {__version__}"
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)
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parser.parse_args()
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logging.basicConfig(level=logging.INFO)
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logging.getLogger("pygls").setLevel(logging.WARNING)
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CMakeLanguageServer().start_io() # type: ignore
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