init() — langchain Function Reference

Architecture documentation for the __init__() function in file_search.py from the langchain codebase.

Function python LangChainCore Runnables calls 2

Entity Profile

LangChainCore→ Runnables→ __init__() — langchain Function Reference

Dependency Diagram

graph TD
  5e762dee_61b5_cd13_bdc0_96a8285f41ee["__init__()"]
  90afd8f3_1e0a_8505_387a_6cda18a008c3["StateFileSearchMiddleware"]
  5e762dee_61b5_cd13_bdc0_96a8285f41ee -->|defined in| 90afd8f3_1e0a_8505_387a_6cda18a008c3
  8a879678_2844_abbb_fe87_14ae1c8a856c["_handle_glob_search()"]
  5e762dee_61b5_cd13_bdc0_96a8285f41ee -->|calls| 8a879678_2844_abbb_fe87_14ae1c8a856c
  9c9a2eda_be6c_5f6f_9a0a_3f3e5575dc2e["_handle_grep_search()"]
  5e762dee_61b5_cd13_bdc0_96a8285f41ee -->|calls| 9c9a2eda_be6c_5f6f_9a0a_3f3e5575dc2e
  style 5e762dee_61b5_cd13_bdc0_96a8285f41ee fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/anthropic/langchain_anthropic/middleware/file_search.py lines 116–199

    def __init__(
        self,
        *,
        state_key: str = "text_editor_files",
    ) -> None:
        """Initialize the search middleware.

        Args:
            state_key: State key to search

                Use `'memory_files'` to search memory tool files.
        """
        self.state_key = state_key

        # Create tool instances
        @tool
        def glob_search(  # noqa: D417
            runtime: ToolRuntime[None, AnthropicToolsState],
            pattern: str,
            path: str = "/",
        ) -> str:
            """Fast file pattern matching tool that works with any codebase size.

            Supports glob patterns like `**/*.js` or `src/**/*.ts`.

            Returns matching file paths sorted by modification time.

            Use this tool when you need to find files by name patterns.

            Args:
                pattern: The glob pattern to match files against.
                path: The directory to search in.

                    If not specified, searches from root.

            Returns:
                Newline-separated list of matching file paths, sorted by modification
                    time (most recently modified first).

                    Returns `'No files found'` if no matches.
            """
            return self._handle_glob_search(pattern, path, runtime.state)

        @tool
        def grep_search(  # noqa: D417
            runtime: ToolRuntime[None, AnthropicToolsState],
            pattern: str,
            path: str = "/",
            include: str | None = None,
            output_mode: Literal[
                "files_with_matches", "content", "count"
            ] = "files_with_matches",
        ) -> str:
            """Fast content search tool that works with any codebase size.

            Searches file contents using regular expressions.

            Supports full regex syntax and filters files by pattern with the include
            parameter.

            Args:
                pattern: The regular expression pattern to search for in file contents.
                path: The directory to search in. If not specified, searches from root.
                include: File pattern to filter (e.g., `'*.js'`, `'*.{ts,tsx}'`).
                output_mode: Output format.

                    Options:

                    - `'files_with_matches'`: Only file paths containing matches
                    - `'content'`: Matching lines with file:line:content format
                    - `'count'`: Count of matches per file

            Returns:
                Search results formatted according to `output_mode`.

                    Returns `'No matches found'` if no results.
            """
            return self._handle_grep_search(
                pattern, path, include, output_mode, runtime.state
            )