@amaui/hash-table/amaui-hash-table.js

Hash table

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("@amaui/utils");
class AmauiHashTable {
    constructor(limit) {
        this.value = [];
        this.length = 0;
        // ASCII character code range 0-127
        this.limit = 127;
        if ((0, utils_1.is)('number', limit) && limit > 0)
            this.limit = limit;
        this.value = new Array(this.limit);
    }
    // Override for a custom hashing method
    hash(property) {
        let value = 0;
        if ((0, utils_1.is)('string', property)) {
            for (let i = 0; i < property.length; i++)
                value += property[i].charCodeAt(0);
        }
        return value % this.limit;
    }
    get(property) {
        var _a;
        const index = this.hash(property);
        const values = this.value[index] || [];
        return (_a = values.find(item => item[0] === property)) === null || _a === void 0 ? void 0 : _a[1];
    }
    set(property, value) {
        const index = this.hash(property);
        if (!this.value[index])
            this.value[index] = [];
        const values = this.value[index];
        values.push([property, value]);
        this.length++;
        return this;
    }
    remove(property) {
        const index = this.hash(property);
        const values = this.value[index];
        if (values) {
            const valueIndex = values.findIndex(item => item[0] === property);
            if (valueIndex > -1) {
                values.splice(valueIndex, 1);
                this.length--;
                return true;
            }
        }
        return false;
    }
    clear() {
        this.value = new Array(this.limit);
        this.length = 0;
        return this;
    }
}
exports.default = AmauiHashTable;