79 lines
3.0 KiB
JavaScript
79 lines
3.0 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.UniqueMapTree = void 0;
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//================================================================
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/**
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* @packageDocumentation
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* @module std.internal
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*/
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//================================================================
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var MapTree_1 = require("./MapTree");
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var UniqueMapTree = /** @class */ (function (_super) {
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__extends(UniqueMapTree, _super);
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/* ---------------------------------------------------------
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CONSTRUCTOR
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--------------------------------------------------------- */
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function UniqueMapTree(source, comp) {
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return _super.call(this, source, comp, function (x, y) { return comp(x.first, y.first); }) || this;
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}
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/* ---------------------------------------------------------
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FINDERS
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--------------------------------------------------------- */
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UniqueMapTree.prototype.nearest_by_key = function (key) {
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// NEED NOT TO ITERATE
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if (this.root_ === null)
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return null;
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//----
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// ITERATE
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//----
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var ret = this.root_;
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while (true) {
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// UNTIL MEET THE MATCHED VALUE OR FINAL BRANCH
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var it = ret.value;
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var my_node = null;
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// COMPARE
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if (this.key_comp()(key, it.first))
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my_node = ret.left;
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else if (this.key_comp()(it.first, key))
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my_node = ret.right;
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else
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return ret; // MATCHED VALUE
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// FINAL BRANCH? OR KEEP GOING
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if (my_node === null)
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break;
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else
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ret = my_node;
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}
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return ret; // DIFFERENT NODE
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};
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UniqueMapTree.prototype.upper_bound = function (key) {
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// FIND MATCHED NODE
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var node = this.nearest_by_key(key);
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if (node === null)
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return this.source().end();
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// MUST BE it.first > key
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var it = node.value;
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if (this.key_comp()(key, it.first))
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return it;
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else
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return it.next();
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};
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return UniqueMapTree;
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}(MapTree_1.MapTree));
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exports.UniqueMapTree = UniqueMapTree;
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//# sourceMappingURL=UniqueMapTree.js.map
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