AlkantarClanX12
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"use strict";
module.exports = function(Promise, INTERNAL) {
var THIS = {};
var util = require("./util");
var nodebackForPromise = require("./nodeback");
var withAppended = util.withAppended;
var maybeWrapAsError = util.maybeWrapAsError;
var canEvaluate = util.canEvaluate;
var TypeError = require("./errors").TypeError;
var defaultSuffix = "Async";
var defaultPromisified = {__isPromisified__: true};
var noCopyProps = [
"arity", "length",
"name",
"arguments",
"caller",
"callee",
"prototype",
"__isPromisified__"
];
var noCopyPropsPattern = new RegExp("^(?:" + noCopyProps.join("|") + ")$");
var defaultFilter = function(name) {
return util.isIdentifier(name) &&
name.charAt(0) !== "_" &&
name !== "constructor";
};
function propsFilter(key) {
return !noCopyPropsPattern.test(key);
}
function isPromisified(fn) {
try {
return fn.__isPromisified__ === true;
}
catch (e) {
return false;
}
}
function hasPromisified(obj, key, suffix) {
var val = util.getDataPropertyOrDefault(obj, key + suffix,
defaultPromisified);
return val ? isPromisified(val) : false;
}
function checkValid(ret, suffix, suffixRegexp) {
for (var i = 0; i < ret.length; i += 2) {
var key = ret[i];
if (suffixRegexp.test(key)) {
var keyWithoutAsyncSuffix = key.replace(suffixRegexp, "");
for (var j = 0; j < ret.length; j += 2) {
if (ret[j] === keyWithoutAsyncSuffix) {
throw new TypeError("Cannot promisify an API that has normal methods with '%s'-suffix\u000a\u000a See http://goo.gl/MqrFmX\u000a"
.replace("%s", suffix));
}
}
}
}
}
function promisifiableMethods(obj, suffix, suffixRegexp, filter) {
var keys = util.inheritedDataKeys(obj);
var ret = [];
for (var i = 0; i < keys.length; ++i) {
var key = keys[i];
var value = obj[key];
var passesDefaultFilter = filter === defaultFilter
? true : defaultFilter(key, value, obj);
if (typeof value === "function" &&
!isPromisified(value) &&
!hasPromisified(obj, key, suffix) &&
filter(key, value, obj, passesDefaultFilter)) {
ret.push(key, value);
}
}
checkValid(ret, suffix, suffixRegexp);
return ret;
}
var escapeIdentRegex = function(str) {
return str.replace(/([$])/, "\\$");
};
var makeNodePromisifiedEval;
if (!false) {
var switchCaseArgumentOrder = function(likelyArgumentCount) {
var ret = [likelyArgumentCount];
var min = Math.max(0, likelyArgumentCount - 1 - 3);
for(var i = likelyArgumentCount - 1; i >= min; --i) {
ret.push(i);
}
for(var i = likelyArgumentCount + 1; i <= 3; ++i) {
ret.push(i);
}
return ret;
};
var argumentSequence = function(argumentCount) {
return util.filledRange(argumentCount, "_arg", "");
};
var parameterDeclaration = function(parameterCount) {
return util.filledRange(
Math.max(parameterCount, 3), "_arg", "");
};
var parameterCount = function(fn) {
if (typeof fn.length === "number") {
return Math.max(Math.min(fn.length, 1023 + 1), 0);
}
return 0;
};
makeNodePromisifiedEval =
function(callback, receiver, originalName, fn, _, multiArgs) {
var newParameterCount = Math.max(0, parameterCount(fn) - 1);
var argumentOrder = switchCaseArgumentOrder(newParameterCount);
var shouldProxyThis = typeof callback === "string" || receiver === THIS;
function generateCallForArgumentCount(count) {
var args = argumentSequence(count).join(", ");
var comma = count > 0 ? ", " : "";
var ret;
if (shouldProxyThis) {
ret = "ret = callback.call(this, {{args}}, nodeback); break;\n";
} else {
ret = receiver === undefined
? "ret = callback({{args}}, nodeback); break;\n"
: "ret = callback.call(receiver, {{args}}, nodeback); break;\n";
}
return ret.replace("{{args}}", args).replace(", ", comma);
}
function generateArgumentSwitchCase() {
var ret = "";
for (var i = 0; i < argumentOrder.length; ++i) {
ret += "case " + argumentOrder[i] +":" +
generateCallForArgumentCount(argumentOrder[i]);
}
ret += " \n\
default: \n\
var args = new Array(len + 1); \n\
var i = 0; \n\
for (var i = 0; i < len; ++i) { \n\
args[i] = arguments[i]; \n\
} \n\
args[i] = nodeback; \n\
[CodeForCall] \n\
break; \n\
".replace("[CodeForCall]", (shouldProxyThis
? "ret = callback.apply(this, args);\n"
: "ret = callback.apply(receiver, args);\n"));
return ret;
}
var getFunctionCode = typeof callback === "string"
? ("this != null ? this['"+callback+"'] : fn")
: "fn";
var body = "'use strict'; \n\
var ret = function (Parameters) { \n\
'use strict'; \n\
var len = arguments.length; \n\
var promise = new Promise(INTERNAL); \n\
promise._captureStackTrace(); \n\
var nodeback = nodebackForPromise(promise, " + multiArgs + "); \n\
var ret; \n\
var callback = tryCatch([GetFunctionCode]); \n\
switch(len) { \n\
[CodeForSwitchCase] \n\
} \n\
if (ret === errorObj) { \n\
promise._rejectCallback(maybeWrapAsError(ret.e), true, true);\n\
} \n\
if (!promise._isFateSealed()) promise._setAsyncGuaranteed(); \n\
return promise; \n\
}; \n\
notEnumerableProp(ret, '__isPromisified__', true); \n\
return ret; \n\
".replace("[CodeForSwitchCase]", generateArgumentSwitchCase())
.replace("[GetFunctionCode]", getFunctionCode);
body = body.replace("Parameters", parameterDeclaration(newParameterCount));
return new Function("Promise",
"fn",
"receiver",
"withAppended",
"maybeWrapAsError",
"nodebackForPromise",
"tryCatch",
"errorObj",
"notEnumerableProp",
"INTERNAL",
body)(
Promise,
fn,
receiver,
withAppended,
maybeWrapAsError,
nodebackForPromise,
util.tryCatch,
util.errorObj,
util.notEnumerableProp,
INTERNAL);
};
}
function makeNodePromisifiedClosure(callback, receiver, _, fn, __, multiArgs) {
var defaultThis = (function() {return this;})();
var method = callback;
if (typeof method === "string") {
callback = fn;
}
function promisified() {
var _receiver = receiver;
if (receiver === THIS) _receiver = this;
var promise = new Promise(INTERNAL);
promise._captureStackTrace();
var cb = typeof method === "string" && this !== defaultThis
? this[method] : callback;
var fn = nodebackForPromise(promise, multiArgs);
try {
cb.apply(_receiver, withAppended(arguments, fn));
} catch(e) {
promise._rejectCallback(maybeWrapAsError(e), true, true);
}
if (!promise._isFateSealed()) promise._setAsyncGuaranteed();
return promise;
}
util.notEnumerableProp(promisified, "__isPromisified__", true);
return promisified;
}
var makeNodePromisified = canEvaluate
? makeNodePromisifiedEval
: makeNodePromisifiedClosure;
function promisifyAll(obj, suffix, filter, promisifier, multiArgs) {
var suffixRegexp = new RegExp(escapeIdentRegex(suffix) + "$");
var methods =
promisifiableMethods(obj, suffix, suffixRegexp, filter);
for (var i = 0, len = methods.length; i < len; i+= 2) {
var key = methods[i];
var fn = methods[i+1];
var promisifiedKey = key + suffix;
if (promisifier === makeNodePromisified) {
obj[promisifiedKey] =
makeNodePromisified(key, THIS, key, fn, suffix, multiArgs);
} else {
var promisified = promisifier(fn, function() {
return makeNodePromisified(key, THIS, key,
fn, suffix, multiArgs);
});
util.notEnumerableProp(promisified, "__isPromisified__", true);
obj[promisifiedKey] = promisified;
}
}
util.toFastProperties(obj);
return obj;
}
function promisify(callback, receiver, multiArgs) {
return makeNodePromisified(callback, receiver, undefined,
callback, null, multiArgs);
}
Promise.promisify = function (fn, options) {
if (typeof fn !== "function") {
throw new TypeError("expecting a function but got " + util.classString(fn));
}
if (isPromisified(fn)) {
return fn;
}
options = Object(options);
var receiver = options.context === undefined ? THIS : options.context;
var multiArgs = !!options.multiArgs;
var ret = promisify(fn, receiver, multiArgs);
util.copyDescriptors(fn, ret, propsFilter);
return ret;
};
Promise.promisifyAll = function (target, options) {
if (typeof target !== "function" && typeof target !== "object") {
throw new TypeError("the target of promisifyAll must be an object or a function\u000a\u000a See http://goo.gl/MqrFmX\u000a");
}
options = Object(options);
var multiArgs = !!options.multiArgs;
var suffix = options.suffix;
if (typeof suffix !== "string") suffix = defaultSuffix;
var filter = options.filter;
if (typeof filter !== "function") filter = defaultFilter;
var promisifier = options.promisifier;
if (typeof promisifier !== "function") promisifier = makeNodePromisified;
if (!util.isIdentifier(suffix)) {
throw new RangeError("suffix must be a valid identifier\u000a\u000a See http://goo.gl/MqrFmX\u000a");
}
var keys = util.inheritedDataKeys(target);
for (var i = 0; i < keys.length; ++i) {
var value = target[keys[i]];
if (keys[i] !== "constructor" &&
util.isClass(value)) {
promisifyAll(value.prototype, suffix, filter, promisifier,
multiArgs);
promisifyAll(value, suffix, filter, promisifier, multiArgs);
}
}
return promisifyAll(target, suffix, filter, promisifier, multiArgs);
};
};