148 lines
2.6 KiB
JavaScript
148 lines
2.6 KiB
JavaScript
/*!
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* coinview.js - coinview object for bcoin
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* Copyright (c) 2014-2016, Christopher Jeffrey (MIT License).
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* https://github.com/bcoin-org/bcoin
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*/
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'use strict';
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var assert = require('assert');
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var Coins = require('./coins-old');
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/**
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* A collections of {@link Coins} objects.
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* @exports CoinView
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* @constructor
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* @param {Object} coins - A hash-to-coins map.
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* @property {Object} coins
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*/
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function CoinView(coins) {
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if (!(this instanceof CoinView))
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return new CoinView(coins);
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this.coins = coins || {};
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}
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/**
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* Add coins to the collection.
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* @param {Coins} coins
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*/
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CoinView.prototype.add = function add(coins) {
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this.coins[coins.hash] = coins;
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};
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/**
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* Add a coin to the collection.
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* @param {Coin} coin
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*/
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CoinView.prototype.addCoin = function addCoin(coin) {
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assert(typeof coin.hash === 'string');
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if (!this.coins[coin.hash])
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this.coins[coin.hash] = new Coins();
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this.coins[coin.hash].add(coin);
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};
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/**
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* Add a tx to the collection.
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* @param {TX} tx
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*/
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CoinView.prototype.addTX = function addTX(tx) {
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this.add(Coins.fromTX(tx));
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};
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/**
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* Get a coin.
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* @param {Hash} hash
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* @param {Number} index
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* @returns {Coin}
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*/
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CoinView.prototype.get = function get(hash, index) {
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var coins = this.coins[hash];
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if (!coins)
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return;
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return coins.get(index);
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};
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/**
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* Test whether the collection has a coin.
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* @param {Hash} hash
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* @param {Number} index
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* @returns {Boolean}
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*/
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CoinView.prototype.has = function has(hash, index) {
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var coins = this.coins[hash];
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if (!coins)
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return false;
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return coins.has(index);
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};
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/**
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* Remove a coin and return it.
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* @param {Hash} hash
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* @param {Number} index
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* @returns {Coin}
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*/
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CoinView.prototype.spend = function spend(hash, index) {
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var coins = this.coins[hash];
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if (!coins)
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return;
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return coins.spend(index);
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};
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/**
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* Fill transaction(s) with coins.
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* @param {TX} tx
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* @returns {Boolean} True if all inputs were filled.
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*/
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CoinView.prototype.fillCoins = function fillCoins(tx) {
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var i, input, prevout;
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for (i = 0; i < tx.inputs.length; i++) {
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input = tx.inputs[i];
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prevout = input.prevout;
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input.coin = this.spend(prevout.hash, prevout.index);
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if (!input.coin)
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return false;
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}
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return true;
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};
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/**
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* Convert collection to an array.
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* @returns {Coins[]}
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*/
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CoinView.prototype.toArray = function toArray() {
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var keys = Object.keys(this.coins);
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var out = [];
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var i, hash;
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for (i = 0; i < keys.length; i++) {
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hash = keys[i];
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out.push(this.coins[hash]);
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}
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return out;
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};
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/*
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* Expose
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*/
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module.exports = CoinView;
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