Zakaria
79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
"""Format LSP diagnostics for inclusion in tool output.
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The model sees a compact, severity-filtered, line-bounded summary of
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diagnostics introduced by the latest edit. Format matches what
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OpenCode's ``lsp/diagnostic.ts`` and Claude Code's
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``formatDiagnosticsSummary`` produce — ``<diagnostics>`` blocks with
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1-indexed line/column, capped at ``MAX_PER_FILE`` errors.
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"""
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from __future__ import annotations
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from typing import Any, Dict, List
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# Severity-1 only by default — warnings/info/hints would flood the
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# agent. Lift this in config under ``lsp.severities`` if needed.
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SEVERITY_NAMES = {1: "ERROR", 2: "WARN", 3: "INFO", 4: "HINT"}
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DEFAULT_SEVERITIES = frozenset({1}) # ERROR only
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MAX_PER_FILE = 20
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MAX_TOTAL_CHARS = 4000
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def format_diagnostic(d: Dict[str, Any]) -> str:
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"""One-line representation of a single diagnostic."""
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sev = SEVERITY_NAMES.get(d.get("severity") or 1, "ERROR")
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rng = d.get("range") or {}
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start = rng.get("start") or {}
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line = int(start.get("line", 0)) + 1
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col = int(start.get("character", 0)) + 1
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msg = str(d.get("message") or "").rstrip()
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code = d.get("code")
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code_part = f" [{code}]" if code not in {None, ""} else ""
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source = d.get("source")
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source_part = f" ({source})" if source else ""
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return f"{sev} [{line}:{col}] {msg}{code_part}{source_part}"
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def report_for_file(
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file_path: str,
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diagnostics: List[Dict[str, Any]],
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*,
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severities: frozenset = DEFAULT_SEVERITIES,
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max_per_file: int = MAX_PER_FILE,
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) -> str:
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"""Build a ``<diagnostics file=...>`` block for one file.
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Returns an empty string when no diagnostics pass the severity
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filter, so callers can do ``if block:`` to skip empty cases.
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"""
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if not diagnostics:
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return ""
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filtered = [d for d in diagnostics if (d.get("severity") or 1) in severities]
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if not filtered:
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return ""
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limited = filtered[:max_per_file]
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extra = len(filtered) - len(limited)
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lines = [format_diagnostic(d) for d in limited]
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body = "\n".join(lines)
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if extra > 0:
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body += f"\n... and {extra} more"
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return f"<diagnostics file=\"{file_path}\">\n{body}\n</diagnostics>"
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def truncate(s: str, *, limit: int = MAX_TOTAL_CHARS) -> str:
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"""Hard-cap a formatted summary string."""
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if len(s) <= limit:
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return s
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marker = "\n…[truncated]"
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return s[: limit - len(marker)] + marker
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__all__ = [
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"SEVERITY_NAMES",
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"DEFAULT_SEVERITIES",
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"MAX_PER_FILE",
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"format_diagnostic",
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"report_for_file",
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"truncate",
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]
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