Function _edit_call

src/tool_system/tools/edit.py:217–335

(tool_input: dict[str, Any], context: ToolContext)

# -- Main call -----------------------------------------------------------------

def _edit_call(tool_input: dict[str, Any], context: ToolContext) -> ToolResult:
    file_path = tool_input["file_path"]
    old_string = tool_input["old_string"]
    new_string = tool_input["new_string"]
    replace_all = bool(tool_input.get("replace_all", False))

    if not isinstance(file_path, str) or not file_path:
        raise ToolInputError("file_path must be a non-empty string")
    if not isinstance(old_string, str):
        raise ToolInputError("old_string must be a string")
    if not isinstance(new_string, str):
        raise ToolInputError("new_string must be a string")
    if old_string == new_string:
        raise ToolInputError("old_string and new_string must differ")

    path = context.ensure_allowed_path(file_path)

    # Reject .ipynb files
    if path.suffix.lower() == ".ipynb":
        raise ToolInputError("Cannot edit .ipynb files with Edit tool. Use the NotebookEdit tool instead.")

    # File creation (empty old_string)
    if old_string == "":
        if path.exists():
            raise ToolInputError("old_string is empty but file already exists -- use non-empty old_string to edit")
        path.parent.mkdir(parents=True, exist_ok=True)
        path.write_text(new_string, encoding="utf-8")
        context.mark_file_read(path)
        return ToolResult(
            name="Edit",
            output={
                "type": "create",
                "filePath": str(path),
                "content": new_string,
                "structuredPatch": [],
            },
        )

    # File existence and type checks
    if not path.exists():
        hint = _find_similar_file(file_path, context.cwd)
        msg = f"file does not exist: {path}"
        if hint:
            msg += f'. Did you mean "{hint}"?'
        raise ToolInputError(msg)
    if not path.is_file():
        raise ToolInputError(f"path is not a file: {path}")

    # File size guard
    try:
        size = path.stat().st_size
    except OSError:
        size = 0
    if size > _MAX_FILE_SIZE:
        raise ToolInputError(f"file is too large ({size} bytes, max {_MAX_FILE_SIZE})")

    # Staleness check
    if not context.was_file_read_and_unchanged(path):