mirror of https://github.com/jkjoy/sunpeiwen.git
56 lines
1.7 KiB
JavaScript
56 lines
1.7 KiB
JavaScript
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"use strict";
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module.exports =
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function(Promise, INTERNAL, tryConvertToPromise, apiRejection, debug) {
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var util = require("./util");
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var tryCatch = util.tryCatch;
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Promise.method = function (fn) {
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if (typeof fn !== "function") {
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throw new Promise.TypeError("expecting a function but got " + util.classString(fn));
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}
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return function () {
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var ret = new Promise(INTERNAL);
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ret._captureStackTrace();
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ret._pushContext();
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var value = tryCatch(fn).apply(this, arguments);
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var promiseCreated = ret._popContext();
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debug.checkForgottenReturns(
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value, promiseCreated, "Promise.method", ret);
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ret._resolveFromSyncValue(value);
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return ret;
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};
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};
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Promise.attempt = Promise["try"] = function (fn) {
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if (typeof fn !== "function") {
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return apiRejection("expecting a function but got " + util.classString(fn));
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}
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var ret = new Promise(INTERNAL);
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ret._captureStackTrace();
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ret._pushContext();
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var value;
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if (arguments.length > 1) {
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debug.deprecated("calling Promise.try with more than 1 argument");
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var arg = arguments[1];
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var ctx = arguments[2];
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value = util.isArray(arg) ? tryCatch(fn).apply(ctx, arg)
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: tryCatch(fn).call(ctx, arg);
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} else {
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value = tryCatch(fn)();
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}
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var promiseCreated = ret._popContext();
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debug.checkForgottenReturns(
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value, promiseCreated, "Promise.try", ret);
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ret._resolveFromSyncValue(value);
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return ret;
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};
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Promise.prototype._resolveFromSyncValue = function (value) {
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if (value === util.errorObj) {
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this._rejectCallback(value.e, false);
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} else {
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this._resolveCallback(value, true);
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}
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};
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};
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