commit

node_modules/bluebird/js/main/map.js

@@ -0,0 +1,133 @@
+"use strict";
+module.exports = function(Promise,
+                          PromiseArray,
+                          apiRejection,
+                          tryConvertToPromise,
+                          INTERNAL) {
+var getDomain = Promise._getDomain;
+var async = require("./async.js");
+var util = require("./util.js");
+var tryCatch = util.tryCatch;
+var errorObj = util.errorObj;
+var PENDING = {};
+var EMPTY_ARRAY = [];
+
+function MappingPromiseArray(promises, fn, limit, _filter) {
+    this.constructor$(promises);
+    this._promise._captureStackTrace();
+    var domain = getDomain();
+    this._callback = domain === null ? fn : domain.bind(fn);
+    this._preservedValues = _filter === INTERNAL
+        ? new Array(this.length())
+        : null;
+    this._limit = limit;
+    this._inFlight = 0;
+    this._queue = limit >= 1 ? [] : EMPTY_ARRAY;
+    async.invoke(init, this, undefined);
+}
+util.inherits(MappingPromiseArray, PromiseArray);
+function init() {this._init$(undefined, -2);}
+
+MappingPromiseArray.prototype._init = function () {};
+
+MappingPromiseArray.prototype._promiseFulfilled = function (value, index) {
+    var values = this._values;
+    var length = this.length();
+    var preservedValues = this._preservedValues;
+    var limit = this._limit;
+    if (values[index] === PENDING) {
+        values[index] = value;
+        if (limit >= 1) {
+            this._inFlight--;
+            this._drainQueue();
+            if (this._isResolved()) return;
+        }
+    } else {
+        if (limit >= 1 && this._inFlight >= limit) {
+            values[index] = value;
+            this._queue.push(index);
+            return;
+        }
+        if (preservedValues !== null) preservedValues[index] = value;
+
+        var callback = this._callback;
+        var receiver = this._promise._boundValue();
+        this._promise._pushContext();
+        var ret = tryCatch(callback).call(receiver, value, index, length);
+        this._promise._popContext();
+        if (ret === errorObj) return this._reject(ret.e);
+
+        var maybePromise = tryConvertToPromise(ret, this._promise);
+        if (maybePromise instanceof Promise) {
+            maybePromise = maybePromise._target();
+            if (maybePromise._isPending()) {
+                if (limit >= 1) this._inFlight++;
+                values[index] = PENDING;
+                return maybePromise._proxyPromiseArray(this, index);
+            } else if (maybePromise._isFulfilled()) {
+                ret = maybePromise._value();
+            } else {
+                return this._reject(maybePromise._reason());
+            }
+        }
+        values[index] = ret;
+    }
+    var totalResolved = ++this._totalResolved;
+    if (totalResolved >= length) {
+        if (preservedValues !== null) {
+            this._filter(values, preservedValues);
+        } else {
+            this._resolve(values);
+        }
+
+    }
+};
+
+MappingPromiseArray.prototype._drainQueue = function () {
+    var queue = this._queue;
+    var limit = this._limit;
+    var values = this._values;
+    while (queue.length > 0 && this._inFlight < limit) {
+        if (this._isResolved()) return;
+        var index = queue.pop();
+        this._promiseFulfilled(values[index], index);
+    }
+};
+
+MappingPromiseArray.prototype._filter = function (booleans, values) {
+    var len = values.length;
+    var ret = new Array(len);
+    var j = 0;
+    for (var i = 0; i < len; ++i) {
+        if (booleans[i]) ret[j++] = values[i];
+    }
+    ret.length = j;
+    this._resolve(ret);
+};
+
+MappingPromiseArray.prototype.preservedValues = function () {
+    return this._preservedValues;
+};
+
+function map(promises, fn, options, _filter) {
+    var limit = typeof options === "object" && options !== null
+        ? options.concurrency
+        : 0;
+    limit = typeof limit === "number" &&
+        isFinite(limit) && limit >= 1 ? limit : 0;
+    return new MappingPromiseArray(promises, fn, limit, _filter);
+}
+
+Promise.prototype.map = function (fn, options) {
+    if (typeof fn !== "function") return apiRejection("fn must be a function\u000a\u000a    See http://goo.gl/916lJJ\u000a");
+
+    return map(this, fn, options, null).promise();
+};
+
+Promise.map = function (promises, fn, options, _filter) {
+    if (typeof fn !== "function") return apiRejection("fn must be a function\u000a\u000a    See http://goo.gl/916lJJ\u000a");
+    return map(promises, fn, options, _filter).promise();
+};
+
+
+};