448 lines
16 KiB
Python
448 lines
16 KiB
Python
from collections.abc import Generator
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from dataclasses import dataclass, field
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from logging import INFO, basicConfig, debug, error, getLogger, info, warning
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from re import findall, finditer, fullmatch, match as rematch
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from time import time
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from lsprotocol.types import (
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INLAY_HINT_RESOLVE,
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TEXT_DOCUMENT_DID_CHANGE,
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TEXT_DOCUMENT_DID_OPEN,
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TEXT_DOCUMENT_DID_SAVE,
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TEXT_DOCUMENT_DOCUMENT_SYMBOL,
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TEXT_DOCUMENT_HOVER,
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TEXT_DOCUMENT_INLAY_HINT,
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WORKSPACE_INLAY_HINT_REFRESH,
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WORKSPACE_SEMANTIC_TOKENS_REFRESH,
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CompletionItem,
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Diagnostic,
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DiagnosticSeverity,
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DidChangeTextDocumentParams,
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DidOpenTextDocumentParams,
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DidSaveTextDocumentParams,
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DocumentSymbol,
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DocumentSymbolParams,
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Hover,
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HoverParams,
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InlayHint,
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InlayHintKind,
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InlayHintParams,
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MessageType,
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Position,
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Range,
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SymbolKind,
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)
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from pygls.server import LanguageServer
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from pygls.workspace import TextDocument
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from skillls.parsing.iterative import IterativeParser, TokenParser
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from .cache import Cache
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URI = str
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basicConfig(filename="skillls.log", filemode="w", level=INFO)
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cache: Cache[str, CompletionItem] = Cache()
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def in_range(what: Position, area: Range) -> bool:
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return (what >= area.start) and (what <= area.end)
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def find_end(start: Position, lines: list[str]) -> Position:
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count = 0
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in_str: bool = False
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last = ""
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for row, line in enumerate(lines[start.line :]):
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if row == 0:
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line = line[start.character :]
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row += start.character
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for col, char in enumerate(line[start.character :] if row == 0 else line):
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match char:
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case "(":
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if not in_str:
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count += 1
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case ")":
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if not in_str:
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if count > 0:
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count -= 1
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if count == 0:
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return Position(start.line + row, col)
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case '"':
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if not (in_str and last == "\\"):
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in_str = not in_str
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case _:
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last = char
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last = char
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error(f"did not fin end for start at {start}")
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return Position(len(lines), len(lines[-1]))
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@dataclass(frozen=True)
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class Environment:
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range: Range
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@dataclass(frozen=True)
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class LetEnvironment(Environment):
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locals: set[str] = field(default_factory=set)
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#
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# @dataclass(frozen=True)
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# class ProcEnvironment(Environment):
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# name: str
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# args: tuple[DocumentSymbol, ...]
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# kwargs: tuple[DocumentSymbol, ...]
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# rest: DocumentSymbol | None = None
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#
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# @property
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# def locals(self) -> tuple[DocumentSymbol, ...]:
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# ret = [*self.args, *self.kwargs]
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# if self.rest:
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# ret.append(self.rest)
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#
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# return tuple(ret)
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class SkillLanguageServer(LanguageServer):
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lets: list[DocumentSymbol] = []
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procs: list[DocumentSymbol] = []
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defs: list[DocumentSymbol] = []
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globals: list[DocumentSymbol] = []
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@property
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def envs(self) -> tuple[DocumentSymbol, ...]:
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return (
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*self.procs,
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*self.lets,
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)
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def _diagnose_parens(self, doc: TextDocument) -> Generator[Diagnostic, None, None]:
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open: list[tuple[int, int]] = []
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in_str: bool = False
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last = ""
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for row, line in enumerate(doc.lines):
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for col, char in enumerate(line):
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match char:
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case "(":
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if not in_str:
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open.append((row, col))
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case ")":
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if not in_str:
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if len(open) > 0:
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open.pop()
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else:
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yield (
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Diagnostic(
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Range(
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Position(row, col),
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Position(row, col),
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),
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"unopened ) encountered",
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)
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)
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case '"':
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if not (in_str and last == "\\"):
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in_str = not in_str
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case _:
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last = char
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last = char
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if len(open) > 0:
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for row, col in open:
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yield (
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Diagnostic(
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Range(Position(row, col), Position(row, col)),
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"unclosed ) encountered",
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)
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)
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def _diagnose_cisms(self, doc: TextDocument) -> Generator[Diagnostic, None, None]:
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for row, line in enumerate(doc.lines):
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for m in finditer(
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r"(?P<proc>procedure\s+|;.*)?([a-zA-Z_][a-zA-Z_0-9]+)\(", line
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):
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if not m.group("proc"):
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yield Diagnostic(
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Range(Position(row, m.start()), Position(row, m.end())),
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f"change `{m.group(2)}(` to `( {m.group(2)}`",
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DiagnosticSeverity.Hint,
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)
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def diagnose(self, doc: TextDocument) -> None:
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diags: list[Diagnostic] = []
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diags.extend(self._diagnose_parens(doc))
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diags.extend(self._diagnose_cisms(doc))
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self.publish_diagnostics(doc.uri, diags)
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def parse(self, doc: TextDocument) -> None:
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self.lets = []
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self._parse_let(doc.lines)
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self.procs = []
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self._parse_proc(doc.lines, doc.uri)
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self.globals = []
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self._parse_assigns(doc.lines)
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def _parse_assigns(self, lines: list[str]) -> None:
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for row, line in enumerate(lines):
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for found in finditer(r"([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s+", line):
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token = found.group(1)
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token_range = Range(
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Position(row, found.start()),
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Position(row, found.start() + len(token)),
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)
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if any(
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in_range(token_range.start, let.range)
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and (token in (child.name for child in (let.children or [])))
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for let in self.lets
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):
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pass
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else:
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self.globals.append(
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DocumentSymbol(
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token, SymbolKind.Variable, token_range, token_range
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)
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)
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def _parse_let(self, lines: list[str]) -> None:
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active_let: DocumentSymbol
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for row, line in enumerate(lines):
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for found in finditer(r"(\(\s*let\s+|\blet\(\s+)\((.*)\)", line):
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start = Position(row, found.start())
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end = find_end(start, lines)
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children: list[DocumentSymbol] = []
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active_let = DocumentSymbol(
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"let",
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SymbolKind.Namespace,
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Range(start, end),
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Range(start, end),
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children=children,
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)
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self.lets.append(active_let)
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offset = len(found.group(1)) + 3
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for local_var in finditer(
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r"([a-zA-Z_][a-zA-Z0-9_]*|\([a-zA-Z_][a-zA-Z0-9_]*\s+.+\))",
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found.group(2),
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):
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if local_var.group(1).startswith("("):
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if m := fullmatch(
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r"\(([a-zA-Z_][a-zA-Z0-9_]*)\s+.+\)",
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local_var.group(1),
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):
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children.append(
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DocumentSymbol(
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m.group(1),
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SymbolKind.Variable,
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Range(
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Position(row, offset + local_var.start() + 1),
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Position(
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row,
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offset
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+ local_var.start()
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+ 1
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+ len(m.string),
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),
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),
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Range(
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Position(row, offset + local_var.start() + 1),
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Position(
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row,
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offset
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+ local_var.start()
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+ 1
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+ len(m.group(1)),
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),
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),
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)
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)
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else:
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assert isinstance(active_let.children, list)
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active_let.children.append(
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DocumentSymbol(
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local_var.group(1),
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SymbolKind.Variable,
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Range(
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Position(row, offset + local_var.start()),
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Position(row, offset + local_var.end()),
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),
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Range(
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Position(row, offset + local_var.start()),
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Position(row, offset + local_var.end()),
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),
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)
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)
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def _parse_proc(self, lines: list[str], uri: str) -> None:
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for row, line in enumerate(lines):
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for found in finditer(
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r"(\(\s*procedure|\bprocedure\()(\s+)([a-zA-Z_][a-zA-Z0-9_]*)\((.*)\)",
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line,
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):
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start = Position(row, found.start())
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end = find_end(start, lines)
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if "@option" in found.group(4) and "@key" in found.group(4):
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self.publish_diagnostics(
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uri,
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[
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Diagnostic(
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Range(start, Position(row, len(line))),
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"`@key` and `@option` used in same definition",
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severity=DiagnosticSeverity.Error,
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)
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],
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)
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return
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args: list[DocumentSymbol] = []
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kwargs: list[DocumentSymbol] = []
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rest: list[DocumentSymbol] = []
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params_start = found.end() - len(found.group(4))
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for part in finditer(
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r"(@(option|key)(\s\(\w+\s+.+\))+|@rest \w+|(\w+\s*))",
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found.group(4),
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):
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if part.group(1).startswith("@rest"):
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rest_var_name = part.group(1).split()[1]
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rest_var_range = Range(
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Position(
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row,
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params_start + part.end() - len(rest_var_name),
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),
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Position(row, params_start + part.end()),
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)
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rest.append(
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DocumentSymbol(
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rest_var_name,
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kind=SymbolKind.Variable,
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range=rest_var_range,
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selection_range=rest_var_range,
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)
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)
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elif part.group(1).startswith("@"):
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for kwarg in finditer(r"(\((\w+)\s+[^\)]+\))", part.group(1)):
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kwargs.append(
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DocumentSymbol(
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kwarg.group(2),
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kind=SymbolKind.Variable,
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range=Range(
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Position(
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row,
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params_start + part.start() + kwarg.start(),
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),
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Position(
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row,
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params_start + part.start() + kwarg.end(),
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),
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),
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selection_range=Range(
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Position(
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row,
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params_start + part.start() + kwarg.start(),
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),
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Position(
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row,
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params_start
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+ part.start()
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+ kwarg.start()
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+ len(kwarg.group(2)),
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),
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),
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)
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)
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else:
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for arg in finditer(r"(\w+)", part.group(1)):
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arg_range = Range(
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Position(
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row,
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params_start + part.start() + arg.start() - 1,
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),
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Position(
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row,
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params_start + part.start() + arg.end() - 1,
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),
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)
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args.append(
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DocumentSymbol(
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arg.group(1),
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kind=SymbolKind.Variable,
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range=arg_range,
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selection_range=arg_range,
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)
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)
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self.procs.append(
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DocumentSymbol(
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found.group(3),
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kind=SymbolKind.Function,
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range=Range(start, end),
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selection_range=Range(start, Position(row, len(line))),
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children=args + rest + kwargs,
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)
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)
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def _hint_let(self) -> Generator[InlayHint, None, None]:
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for let in self.lets:
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if let.children:
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for child in let.children:
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yield InlayHint(child.selection_range.end, "|l")
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def _hint_proc(self) -> Generator[InlayHint, None, None]:
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for proc in self.procs:
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warning(proc)
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if proc.children:
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for child in proc.children:
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yield InlayHint(child.selection_range.end, "|l")
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def _hint_globals(self) -> Generator[InlayHint, None, None]:
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for glbl in self.globals:
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yield InlayHint(glbl.selection_range.end, "|g")
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def hint(self, doc: TextDocument, area: Range) -> list[InlayHint]:
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hints: list[InlayHint] = []
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hints.extend(self._hint_proc())
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hints.extend(self._hint_let())
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hints.extend(self._hint_globals())
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return hints
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server = SkillLanguageServer("skillls", "v0.3")
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@server.feature(TEXT_DOCUMENT_DID_SAVE)
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@server.feature(TEXT_DOCUMENT_DID_OPEN)
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@server.feature(TEXT_DOCUMENT_DID_CHANGE)
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def on_open(ls: SkillLanguageServer, params: DidSaveTextDocumentParams) -> None:
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doc = server.workspace.get_text_document(params.text_document.uri)
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if not ls.diagnose(doc):
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ls.parse(doc)
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ls.lsp.send_request_async(WORKSPACE_INLAY_HINT_REFRESH)
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@server.feature(TEXT_DOCUMENT_INLAY_HINT)
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def inlay_hints(ls: SkillLanguageServer, params: InlayHintParams) -> list[InlayHint]:
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doc = server.workspace.get_text_document(params.text_document.uri)
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return ls.hint(doc, params.range)
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@server.feature(TEXT_DOCUMENT_DOCUMENT_SYMBOL)
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def doc_symbols(
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ls: SkillLanguageServer,
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params: DocumentSymbolParams,
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) -> list[DocumentSymbol]:
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return ls.procs + ls.lets + ls.defs + ls.globals
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def main():
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server.start_io()
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