lan-manager/web/node_modules/@antv/graphlib/lib/algorithm/floyd-warshall.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.floydWarshall = void 0;
var DEFAULT_WEIGHT_FUNC = function () { return 1; };
function floydWarshall(graph, weightFn, edgeFn) {
    return runFloydWarshall(graph, weightFn || DEFAULT_WEIGHT_FUNC, edgeFn ||
        function (v) {
            return graph.outEdges(v);
        });
}
exports.floydWarshall = floydWarshall;
function runFloydWarshall(graph, weightFn, edgeFn) {
    var results = {};
    var nodes = graph.nodes();
    nodes.forEach(function (node) {
        var v = String(node);
        results[v] = {};
        results[v][v] = { distance: 0 };
        nodes.forEach(function (w) {
            if (node !== w) {
                results[v][String(w)] = { distance: Number.POSITIVE_INFINITY };
            }
        });
        edgeFn(node).forEach(function (edge) {
            var w = edge.v === node ? edge.w : edge.v;
            var d = weightFn(edge);
            results[v][String(w)] = { distance: d, predecessor: node };
        });
    });
    nodes.forEach(function (nodek) {
        var k = String(nodek);
        var rowK = results[k];
        nodes.forEach(function (nodei) {
            var i = String(nodei);
            var rowI = results[i];
            nodes.forEach(function (nodej) {
                var j = String(nodej);
                var ik = rowI[k];
                var kj = rowK[j];
                var ij = rowI[j];
                var altDistance = ik.distance + kj.distance;
                if (altDistance < ij.distance) {
                    ij.distance = altDistance;
                    ij.predecessor = kj.predecessor;
                }
            });
        });
    });
    return results;
}
exports.default = floydWarshall;