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transducers.js
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transducers.js
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// transducers-js 0.4.174
// http://github.com/cognitect-labs/transducers-js
//
// Copyright 2014-2015 Cognitect. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License..
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return null === a;
};
goog.isDefAndNotNull = function(a) {
return null != a;
};
goog.isArray = function(a) {
return "array" == goog.typeOf(a);
};
goog.isArrayLike = function(a) {
var b = goog.typeOf(a);
return "array" == b || "object" == b && "number" == typeof a.length;
};
goog.isDateLike = function(a) {
return goog.isObject(a) && "function" == typeof a.getFullYear;
};
goog.isString = function(a) {
return "string" == typeof a;
};
goog.isBoolean = function(a) {
return "boolean" == typeof a;
};
goog.isNumber = function(a) {
return "number" == typeof a;
};
goog.isFunction = function(a) {
return "function" == goog.typeOf(a);
};
goog.isObject = function(a) {
var b = typeof a;
return "object" == b && null != a || "function" == b;
};
goog.getUid = function(a) {
return a[goog.UID_PROPERTY_] || (a[goog.UID_PROPERTY_] = ++goog.uidCounter_);
};
goog.hasUid = function(a) {
return !!a[goog.UID_PROPERTY_];
};
goog.removeUid = function(a) {
"removeAttribute" in a && a.removeAttribute(goog.UID_PROPERTY_);
try {
delete a[goog.UID_PROPERTY_];
} catch (b) {
}
};
goog.UID_PROPERTY_ = "closure_uid_" + (1E9 * Math.random() >>> 0);
goog.uidCounter_ = 0;
goog.getHashCode = goog.getUid;
goog.removeHashCode = goog.removeUid;
goog.cloneObject = function(a) {
var b = goog.typeOf(a);
if ("object" == b || "array" == b) {
if (a.clone) {
return a.clone();
}
var b = "array" == b ? [] : {}, c;
for (c in a) {
b[c] = goog.cloneObject(a[c]);
}
return b;
}
return a;
};
goog.bindNative_ = function(a, b, c) {
return a.call.apply(a.bind, arguments);
};
goog.bindJs_ = function(a, b, c) {
if (!a) {
throw Error();
}
if (2 < arguments.length) {
var d = Array.prototype.slice.call(arguments, 2);
return function() {
var c = Array.prototype.slice.call(arguments);
Array.prototype.unshift.apply(c, d);
return a.apply(b, c);
};
}
return function() {
return a.apply(b, arguments);
};
};
goog.bind = function(a, b, c) {
Function.prototype.bind && -1 != Function.prototype.bind.toString().indexOf("native code") ? goog.bind = goog.bindNative_ : goog.bind = goog.bindJs_;
return goog.bind.apply(null, arguments);
};
goog.partial = function(a, b) {
var c = Array.prototype.slice.call(arguments, 1);
return function() {
var b = c.slice();
b.push.apply(b, arguments);
return a.apply(this, b);
};
};
goog.mixin = function(a, b) {
for (var c in b) {
a[c] = b[c];
}
};
goog.now = goog.TRUSTED_SITE && Date.now || function() {
return +new Date;
};
goog.globalEval = function(a) {
if (goog.global.execScript) {
goog.global.execScript(a, "JavaScript");
} else {
if (goog.global.eval) {
if (null == goog.evalWorksForGlobals_ && (goog.global.eval("var _et_ = 1;"), "undefined" != typeof goog.global._et_ ? (delete goog.global._et_, goog.evalWorksForGlobals_ = !0) : goog.evalWorksForGlobals_ = !1), goog.evalWorksForGlobals_) {
goog.global.eval(a);
} else {
var b = goog.global.document, c = b.createElement("SCRIPT");
c.type = "text/javascript";
c.defer = !1;
c.appendChild(b.createTextNode(a));
b.body.appendChild(c);
b.body.removeChild(c);
}
} else {
throw Error("goog.globalEval not available");
}
}
};
goog.evalWorksForGlobals_ = null;
goog.getCssName = function(a, b) {
var c = function(a) {
return goog.cssNameMapping_[a] || a;
}, d = function(a) {
a = a.split("-");
for (var b = [], d = 0;d < a.length;d++) {
b.push(c(a[d]));
}
return b.join("-");
}, d = goog.cssNameMapping_ ? "BY_WHOLE" == goog.cssNameMappingStyle_ ? c : d : function(a) {
return a;
};
return b ? a + "-" + d(b) : d(a);
};
goog.setCssNameMapping = function(a, b) {
goog.cssNameMapping_ = a;
goog.cssNameMappingStyle_ = b;
};
!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING && (goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING);
goog.getMsg = function(a, b) {
b && (a = a.replace(/\{\$([^}]+)}/g, function(a, d) {
return d in b ? b[d] : a;
}));
return a;
};
goog.getMsgWithFallback = function(a, b) {
return a;
};
goog.exportSymbol = function(a, b, c) {
goog.exportPath_(a, b, c);
};
goog.exportProperty = function(a, b, c) {
a[b] = c;
};
goog.inherits = function(a, b) {
function c() {
}
c.prototype = b.prototype;
a.superClass_ = b.prototype;
a.prototype = new c;
a.prototype.constructor = a;
a.base = function(a, c, f) {
for (var g = Array(arguments.length - 2), h = 2;h < arguments.length;h++) {
g[h - 2] = arguments[h];
}
return b.prototype[c].apply(a, g);
};
};
goog.base = function(a, b, c) {
var d = arguments.callee.caller;
if (goog.STRICT_MODE_COMPATIBLE || goog.DEBUG && !d) {
throw Error("arguments.caller not defined. goog.base() cannot be used with strict mode code. See http://www.ecma-international.org/ecma-262/5.1/#sec-C");
}
if (d.superClass_) {
for (var e = Array(arguments.length - 1), f = 1;f < arguments.length;f++) {
e[f - 1] = arguments[f];
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}
e = Array(arguments.length - 2);
for (f = 2;f < arguments.length;f++) {
e[f - 2] = arguments[f];
}
for (var f = !1, g = a.constructor;g;g = g.superClass_ && g.superClass_.constructor) {
if (g.prototype[b] === d) {
f = !0;
} else {
if (f) {
return g.prototype[b].apply(a, e);
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if (a[b] === d) {
return a.constructor.prototype[b].apply(a, e);
}
throw Error("goog.base called from a method of one name to a method of a different name");
};
goog.scope = function(a) {
a.call(goog.global);
};
COMPILED || (goog.global.COMPILED = COMPILED);
goog.defineClass = function(a, b) {
var c = b.constructor, d = b.statics;
c && c != Object.prototype.constructor || (c = function() {
throw Error("cannot instantiate an interface (no constructor defined).");
});
c = goog.defineClass.createSealingConstructor_(c, a);
a && goog.inherits(c, a);
delete b.constructor;
delete b.statics;
goog.defineClass.applyProperties_(c.prototype, b);
null != d && (d instanceof Function ? d(c) : goog.defineClass.applyProperties_(c, d));
return c;
};
goog.defineClass.SEAL_CLASS_INSTANCES = goog.DEBUG;
goog.defineClass.createSealingConstructor_ = function(a, b) {
if (goog.defineClass.SEAL_CLASS_INSTANCES && Object.seal instanceof Function) {
if (b && b.prototype && b.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_]) {
return a;
}
var c = function() {
var b = a.apply(this, arguments) || this;
b[goog.UID_PROPERTY_] = b[goog.UID_PROPERTY_];
this.constructor === c && Object.seal(b);
return b;
};
return c;
}
return a;
};
goog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = "constructor hasOwnProperty isPrototypeOf propertyIsEnumerable toLocaleString toString valueOf".split(" ");
goog.defineClass.applyProperties_ = function(a, b) {
for (var c in b) {
Object.prototype.hasOwnProperty.call(b, c) && (a[c] = b[c]);
}
for (var d = 0;d < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length;d++) {
c = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[d], Object.prototype.hasOwnProperty.call(b, c) && (a[c] = b[c]);
}
};
goog.tagUnsealableClass = function(a) {
!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES && (a.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = !0);
};
goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = "goog_defineClass_legacy_unsealable";
var com = {cognitect:{}};
com.cognitect.transducers = {};
var TRANSDUCERS_DEV = !0, TRANSDUCERS_NODE_TARGET = !1, TRANSDUCERS_BROWSER_TARGET = !0, TRANSDUCERS_BROWSER_AMD_TARGET = !1;
com.cognitect.transducers.ITER_SYMBOL = "undefined" != typeof Symbol ? Symbol.iterator : "@@iterator";
com.cognitect.transducers.ITransformer = function() {
};
com.cognitect.transducers.ITransformer.prototype["@@transducer/init"] = function() {
};
com.cognitect.transducers.ITransformer.prototype["@@transducer/result"] = function(a) {
};
com.cognitect.transducers.ITransformer.prototype["@@transducer/step"] = function(a, b) {
};
com.cognitect.transducers.IReduced = function() {
};
com.cognitect.transducers.isString = function(a) {
return "string" == typeof a;
};
com.cognitect.transducers.isArray = "undefined" != typeof Array.isArray ? function(a) {
return Array.isArray(a);
} : function(a) {
return "array" == goog.typeOf(a);
};
com.cognitect.transducers.isObject = function(a) {
return "object" == goog.typeOf(a);
};
com.cognitect.transducers.isIterable = function(a) {
return a[com.cognitect.transducers.ITER_SYMBOL] || a.next;
};
com.cognitect.transducers.slice = function(a, b, c) {
return null == c ? Array.prototype.slice.call(a, b) : Array.prototype.slice.call(a, b, c);
};
com.cognitect.transducers.complement = function(a) {
return function(b) {
return !a.apply(null, com.cognitect.transducers.slice(arguments, 0));
};
};
com.cognitect.transducers.Wrap = function(a) {
this.stepFn = a;
};
com.cognitect.transducers.Wrap.prototype["@@transducer/init"] = function() {
throw Error("init not implemented");
};
com.cognitect.transducers.Wrap.prototype["@@transducer/result"] = function(a) {
return a;
};
com.cognitect.transducers.Wrap.prototype["@@transducer/step"] = function(a, b) {
return this.stepFn(a, b);
};
com.cognitect.transducers.wrap = function(a) {
return "function" == typeof a ? new com.cognitect.transducers.Wrap(a) : a;
};
com.cognitect.transducers.Reduced = function(a) {
this["@@transducer/reduced"] = !0;
this["@@transducer/value"] = a;
};
com.cognitect.transducers.reduced = function(a) {
return new com.cognitect.transducers.Reduced(a);
};
com.cognitect.transducers.isReduced = function(a) {
return a instanceof com.cognitect.transducers.Reduced || a && a["@@transducer/reduced"];
};
com.cognitect.transducers.ensureReduced = function(a) {
return com.cognitect.transducers.isReduced(a) ? a : com.cognitect.transducers.reduced(a);
};
com.cognitect.transducers.deref = function(a) {
return a["@@transducer/value"];
};
com.cognitect.transducers.unreduced = function(a) {
return com.cognitect.transducers.isReduced(a) ? com.cognitect.transducers.deref(a) : a;
};
com.cognitect.transducers.identity = function(a) {
return a;
};
com.cognitect.transducers.comp = function(a) {
var b = arguments.length;
if (2 == b) {
var c = arguments[0], d = arguments[1];
return function(a) {
return c(d.apply(null, com.cognitect.transducers.slice(arguments, 0)));
};
}
if (2 < b) {
return com.cognitect.transducers.reduce(com.cognitect.transducers.comp, arguments[0], com.cognitect.transducers.slice(arguments, 1));
}
if (TRANSDUCERS_DEV) {
throw Error("comp must given at least 2 arguments");
}
};
com.cognitect.transducers.Map = function(a, b) {
this.f = a;
this.xf = b;
};
com.cognitect.transducers.Map.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.Map.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.Map.prototype["@@transducer/step"] = function(a, b) {
return this.xf["@@transducer/step"](a, this.f(b));
};
com.cognitect.transducers.map = function(a) {
if (TRANSDUCERS_DEV && null == a) {
throw Error("At least one argument must be supplied to map");
}
return function(b) {
return new com.cognitect.transducers.Map(a, b);
};
};
com.cognitect.transducers.Filter = function(a, b) {
this.pred = a;
this.xf = b;
};
com.cognitect.transducers.Filter.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.Filter.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.Filter.prototype["@@transducer/step"] = function(a, b) {
return this.pred(b) ? this.xf["@@transducer/step"](a, b) : a;
};
com.cognitect.transducers.filter = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("filter must be given a function");
}
return function(b) {
return new com.cognitect.transducers.Filter(a, b);
};
};
com.cognitect.transducers.remove = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("remove must be given a function");
}
return com.cognitect.transducers.filter(com.cognitect.transducers.complement(a));
};
com.cognitect.transducers.Take = function(a, b) {
this.n = a;
this.xf = b;
};
com.cognitect.transducers.Take.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.Take.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.Take.prototype["@@transducer/step"] = function(a, b) {
a = 0 < this.n ? this.xf["@@transducer/step"](a, b) : com.cognitect.transducers.ensureReduced(a);
this.n--;
return a;
};
com.cognitect.transducers.take = function(a) {
if (TRANSDUCERS_DEV && "number" != typeof a) {
throw Error("take must be given an integer");
}
return function(b) {
return new com.cognitect.transducers.Take(a, b);
};
};
com.cognitect.transducers.TakeWhile = function(a, b) {
this.pred = a;
this.xf = b;
};
com.cognitect.transducers.TakeWhile.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.TakeWhile.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.TakeWhile.prototype["@@transducer/step"] = function(a, b) {
return this.pred(b) ? this.xf["@@transducer/step"](a, b) : com.cognitect.transducers.reduced(a);
};
com.cognitect.transducers.takeWhile = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("takeWhile must given a function");
}
return function(b) {
return new com.cognitect.transducers.TakeWhile(a, b);
};
};
com.cognitect.transducers.TakeNth = function(a, b) {
this.i = -1;
this.n = a;
this.xf = b;
};
com.cognitect.transducers.TakeNth.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.TakeNth.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.TakeNth.prototype["@@transducer/step"] = function(a, b) {
this.i++;
return 0 == this.i % this.n ? this.xf["@@transducer/step"](a, b) : a;
};
com.cognitect.transducers.takeNth = function(a) {
if (TRANSDUCERS_DEV && "number" != typeof a) {
throw Error("takeNth must be given a number");
}
return function(b) {
return new com.cognitect.transducers.TakeNth(a, b);
};
};
com.cognitect.transducers.Drop = function(a, b) {
this.n = a;
this.xf = b;
};
com.cognitect.transducers.Drop.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.Drop.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.Drop.prototype["@@transducer/step"] = function(a, b) {
return 0 < this.n ? (this.n--, a) : this.xf["@@transducer/step"](a, b);
};
com.cognitect.transducers.drop = function(a) {
if (TRANSDUCERS_DEV && "number" !== typeof a) {
throw Error("drop must be given an integer");
}
return function(b) {
return new com.cognitect.transducers.Drop(a, b);
};
};
com.cognitect.transducers.DropWhile = function(a, b) {
this.drop = !0;
this.pred = a;
this.xf = b;
};
com.cognitect.transducers.DropWhile.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.DropWhile.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.DropWhile.prototype["@@transducer/step"] = function(a, b) {
if (this.drop && this.pred(b)) {
return a;
}
this.drop && (this.drop = !1);
return this.xf["@@transducer/step"](a, b);
};
com.cognitect.transducers.dropWhile = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("dropWhile must be given a function");
}
return function(b) {
return new com.cognitect.transducers.DropWhile(a, b);
};
};
com.cognitect.transducers.NONE = {};
com.cognitect.transducers.PartitionBy = function(a, b) {
this.f = a;
this.xf = b;
this.a = [];
this.pval = com.cognitect.transducers.NONE;
};
com.cognitect.transducers.PartitionBy.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.PartitionBy.prototype["@@transducer/result"] = function(a) {
0 < this.a.length && (a = com.cognitect.transducers.unreduced(this.xf["@@transducer/step"](a, this.a)), this.a = []);
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.PartitionBy.prototype["@@transducer/step"] = function(a, b) {
var c = this.pval, d = this.f(b);
this.pval = d;
if (c == com.cognitect.transducers.NONE || c == d) {
return this.a.push(b), a;
}
c = this.xf["@@transducer/step"](a, this.a);
this.a = [];
com.cognitect.transducers.isReduced(c) || this.a.push(b);
return c;
};
com.cognitect.transducers.partitionBy = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("partitionBy must be given an function");
}
return function(b) {
return new com.cognitect.transducers.PartitionBy(a, b);
};
};
com.cognitect.transducers.PartitionAll = function(a, b) {
this.n = a;
this.xf = b;
this.a = [];
};
com.cognitect.transducers.PartitionAll.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.PartitionAll.prototype["@@transducer/result"] = function(a) {
0 < this.a.length && (a = com.cognitect.transducers.unreduced(this.xf["@@transducer/step"](a, this.a)), this.a = []);
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.PartitionAll.prototype["@@transducer/step"] = function(a, b) {
this.a.push(b);
if (this.n == this.a.length) {
var c = this.a;
this.a = [];
return this.xf["@@transducer/step"](a, c);
}
return a;
};
com.cognitect.transducers.partitionAll = function(a) {
if (TRANSDUCERS_DEV && "number" != typeof a) {
throw Error("partitionAll must be given a number");
}
return function(b) {
return new com.cognitect.transducers.PartitionAll(a, b);
};
};
com.cognitect.transducers.Keep = function(a, b) {
this.f = a;
this.xf = b;
};
com.cognitect.transducers.Keep.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.Keep.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.Keep.prototype["@@transducer/step"] = function(a, b) {
return null == this.f(b) ? a : this.xf["@@transducer/step"](a, b);
};
com.cognitect.transducers.keep = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("keep must be given a function");
}
return function(b) {
return new com.cognitect.transducers.Keep(a, b);
};
};
com.cognitect.transducers.KeepIndexed = function(a, b) {
this.i = -1;
this.f = a;
this.xf = b;
};
com.cognitect.transducers.KeepIndexed.prototype["@@transducer/init"] = function() {
return this.xf["@@transducer/init"]();
};
com.cognitect.transducers.KeepIndexed.prototype["@@transducer/result"] = function(a) {
return this.xf["@@transducer/result"](a);
};
com.cognitect.transducers.KeepIndexed.prototype["@@transducer/step"] = function(a, b) {
this.i++;
return null == this.f(this.i, b) ? a : this.xf["@@transducer/step"](a, b);
};
com.cognitect.transducers.keepIndexed = function(a) {
if (TRANSDUCERS_DEV && "function" != typeof a) {
throw Error("keepIndexed must be given a function");
}
return function(b) {
return new com.cognitect.transducers.KeepIndexed(a, b);
};
};
com.cognitect.transducers.preservingReduced = function(a) {
return {"@@transducer/init":function() {
return a["@@transducer/init"]();
}, "@@transducer/result":function(a) {
return a;
}, "@@transducer/step":function(b, c) {
var d = a["@@transducer/step"](b, c);
return com.cognitect.transducers.isReduced(d) ? com.cognitect.transducers.reduced(d) : d;
}};
};
com.cognitect.transducers.cat = function(a) {
var b = com.cognitect.transducers.preservingReduced(a);
return {"@@transducer/init":function() {
return a["@@transducer/init"]();
}, "@@transducer/result":function(b) {
return a["@@transducer/result"](b);
}, "@@transducer/step":function(a, d) {
return com.cognitect.transducers.reduce(b, a, d);
}};
};
com.cognitect.transducers.mapcat = function(a) {
return com.cognitect.transducers.comp(com.cognitect.transducers.map(a), com.cognitect.transducers.cat);
};