VertexViewer Class — langchain Architecture

Source Code

libs/core/langchain_core/runnables/graph_ascii.py lines 27–54

class VertexViewer:
    """VertexViewer class.

    Class to define vertex box boundaries that will be accounted for during
    graph building by grandalf.
    """

    HEIGHT = 3  # top and bottom box edges + text
    """Height of the box."""

    def __init__(self, name: str) -> None:
        """Create a VertexViewer.

        Args:
            name: name of the vertex.
        """
        self._h = self.HEIGHT  # top and bottom box edges + text
        self._w = len(name) + 2  # right and left bottom edges + text

    @property
    def h(self) -> int:
        """Height of the box."""
        return self._h

    @property
    def w(self) -> int:
        """Width of the box."""
        return self._w