| | |
| | | var global = require('../internals/global'); |
| | | var bind = require('../internals/function-bind-context'); |
| | | var call = require('../internals/function-call'); |
| | | var anObject = require('../internals/an-object'); |
| | | var tryToString = require('../internals/try-to-string'); |
| | | var isArrayIteratorMethod = require('../internals/is-array-iterator-method'); |
| | | var lengthOfArrayLike = require('../internals/length-of-array-like'); |
| | | var bind = require('../internals/function-bind-context'); |
| | | var isPrototypeOf = require('../internals/object-is-prototype-of'); |
| | | var getIterator = require('../internals/get-iterator'); |
| | | var getIteratorMethod = require('../internals/get-iterator-method'); |
| | | var iteratorClose = require('../internals/iterator-close'); |
| | | |
| | | var TypeError = global.TypeError; |
| | | |
| | | var Result = function (stopped, result) { |
| | | this.stopped = stopped; |
| | | this.result = result; |
| | | }; |
| | | |
| | | var ResultPrototype = Result.prototype; |
| | | |
| | | module.exports = function (iterable, unboundFunction, options) { |
| | | var that = options && options.that; |
| | | var AS_ENTRIES = !!(options && options.AS_ENTRIES); |
| | | var IS_ITERATOR = !!(options && options.IS_ITERATOR); |
| | | var INTERRUPTED = !!(options && options.INTERRUPTED); |
| | | var fn = bind(unboundFunction, that, 1 + AS_ENTRIES + INTERRUPTED); |
| | | var fn = bind(unboundFunction, that); |
| | | var iterator, iterFn, index, length, result, next, step; |
| | | |
| | | var stop = function (condition) { |
| | |
| | | iterator = iterable; |
| | | } else { |
| | | iterFn = getIteratorMethod(iterable); |
| | | if (!iterFn) throw TypeError(String(iterable) + ' is not iterable'); |
| | | if (!iterFn) throw TypeError(tryToString(iterable) + ' is not iterable'); |
| | | // optimisation for array iterators |
| | | if (isArrayIteratorMethod(iterFn)) { |
| | | for (index = 0, length = lengthOfArrayLike(iterable); length > index; index++) { |
| | | result = callFn(iterable[index]); |
| | | if (result && result instanceof Result) return result; |
| | | if (result && isPrototypeOf(ResultPrototype, result)) return result; |
| | | } return new Result(false); |
| | | } |
| | | iterator = getIterator(iterable, iterFn); |
| | | } |
| | | |
| | | next = iterator.next; |
| | | while (!(step = next.call(iterator)).done) { |
| | | while (!(step = call(next, iterator)).done) { |
| | | try { |
| | | result = callFn(step.value); |
| | | } catch (error) { |
| | | iteratorClose(iterator, 'throw', error); |
| | | } |
| | | if (typeof result == 'object' && result && result instanceof Result) return result; |
| | | if (typeof result == 'object' && result && isPrototypeOf(ResultPrototype, result)) return result; |
| | | } return new Result(false); |
| | | }; |