mirror of https://github.com/jkjoy/sunpeiwen.git
59 lines
1.6 KiB
JavaScript
59 lines
1.6 KiB
JavaScript
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"use strict";
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module.exports = function(Promise) {
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var util = require("./util");
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var async = Promise._async;
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var tryCatch = util.tryCatch;
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var errorObj = util.errorObj;
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function spreadAdapter(val, nodeback) {
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var promise = this;
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if (!util.isArray(val)) return successAdapter.call(promise, val, nodeback);
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var ret =
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tryCatch(nodeback).apply(promise._boundValue(), [null].concat(val));
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if (ret === errorObj) {
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async.throwLater(ret.e);
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}
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}
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function successAdapter(val, nodeback) {
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var promise = this;
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var receiver = promise._boundValue();
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var ret = val === undefined
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? tryCatch(nodeback).call(receiver, null)
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: tryCatch(nodeback).call(receiver, null, val);
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if (ret === errorObj) {
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async.throwLater(ret.e);
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}
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}
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function errorAdapter(reason, nodeback) {
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var promise = this;
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if (!reason) {
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var newReason = new Error(reason + "");
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newReason.cause = reason;
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reason = newReason;
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}
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var ret = tryCatch(nodeback).call(promise._boundValue(), reason);
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if (ret === errorObj) {
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async.throwLater(ret.e);
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}
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}
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Promise.prototype.asCallback = Promise.prototype.nodeify = function (nodeback,
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options) {
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if (typeof nodeback == "function") {
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var adapter = successAdapter;
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if (options !== undefined && Object(options).spread) {
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adapter = spreadAdapter;
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}
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this._then(
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adapter,
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errorAdapter,
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undefined,
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this,
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nodeback
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);
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}
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return this;
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};
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};
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