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"use strict";
module.exports = function(Promise, NEXT_FILTER, tryConvertToPromise) {
var util = require("./util.js");
var isPrimitive = util.isPrimitive;
var thrower = util.thrower;
function returnThis() {
return this;
}
function throwThis() {
throw this;
}
function return$(r) {
return function() {
return r;
};
}
function throw$(r) {
return function() {
throw r;
};
}
function promisedFinally(ret, reasonOrValue, isFulfilled) {
var then;
if (isPrimitive(reasonOrValue)) {
then = isFulfilled ? return$(reasonOrValue) : throw$(reasonOrValue);
} else {
then = isFulfilled ? returnThis : throwThis;
}
return ret._then(then, thrower, undefined, reasonOrValue, undefined);
}
function finallyHandler(reasonOrValue) {
var promise = this.promise;
var handler = this.handler;
var ret = promise._isBound()
? handler.call(promise._boundTo)
: handler();
if (ret !== undefined) {
var maybePromise = tryConvertToPromise(ret, promise);
if (maybePromise instanceof Promise) {
maybePromise = maybePromise._target();
return promisedFinally(maybePromise, reasonOrValue,
promise.isFulfilled());
}
}
if (promise.isRejected()) {
NEXT_FILTER.e = reasonOrValue;
return NEXT_FILTER;
} else {
return reasonOrValue;
}
}
function tapHandler(value) {
var promise = this.promise;
var handler = this.handler;
var ret = promise._isBound()
? handler.call(promise._boundTo, value)
: handler(value);
if (ret !== undefined) {
var maybePromise = tryConvertToPromise(ret, promise);
if (maybePromise instanceof Promise) {
maybePromise = maybePromise._target();
return promisedFinally(maybePromise, value, true);
}
}
return value;
}
Promise.prototype._passThroughHandler = function (handler, isFinally) {
if (typeof handler !== "function") return this.then();
var promiseAndHandler = {
promise: this,
handler: handler
};
return this._then(
isFinally ? finallyHandler : tapHandler,
isFinally ? finallyHandler : undefined, undefined,
promiseAndHandler, undefined);
};
Promise.prototype.lastly =
Promise.prototype["finally"] = function (handler) {
return this._passThroughHandler(handler, true);
};
Promise.prototype.tap = function (handler) {
return this._passThroughHandler(handler, false);
};
};
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