Module calc 

Graph calculation for commit visualization.

This module is adapted from Serie by Kyosuke Fujimoto, licensed under the MIT License. The algorithm calculates x,y positions for commits and edges to visualize the commit DAG.

Key changes from Serie:

• Uses CommitCid instead of CommitHash
• Uses VoidCommit instead of git Commit
• Simplified repository interface via GraphContext

Structs

Edge

A visual edge segment in the graph.

Graph

Calculated graph structure for rendering.

OwnedGraph

Owned graph structure (no lifetime parameter).

SimpleGraphContext

Simple in-memory graph context built from a commit list.

Enums

EdgeType

Edge type determines the character used for rendering.

Traits

GraphContext

Context providing commit relationships for graph calculation.

Functions

calc_graph

Calculate the graph layout for a list of commits.

calc_graph_owned

Calculate graph layout and return an owned structure.