| 1 | "use strict";
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| 2 |
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| 3 | var isArguments = require("es5-ext/function/is-arguments")
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| 4 | , callable = require("es5-ext/object/valid-callable")
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| 5 | , isString = require("es5-ext/string/is-string")
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| 6 | , get = require("./get");
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| 7 |
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| 8 | var isArray = Array.isArray, call = Function.prototype.call, some = Array.prototype.some;
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| 9 |
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| 10 | module.exports = function (iterable, cb /*, thisArg*/) {
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| 11 | var mode, thisArg = arguments[2], result, doBreak, broken, i, length, char, code;
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| 12 | if (isArray(iterable) || isArguments(iterable)) mode = "array";
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| 13 | else if (isString(iterable)) mode = "string";
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| 14 | else iterable = get(iterable);
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| 15 |
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| 16 | callable(cb);
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| 17 | doBreak = function () {
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| 18 | broken = true;
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| 19 | };
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| 20 | if (mode === "array") {
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| 21 | some.call(iterable, function (value) {
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| 22 | call.call(cb, thisArg, value, doBreak);
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| 23 | return broken;
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| 24 | });
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| 25 | return;
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| 26 | }
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| 27 | if (mode === "string") {
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| 28 | length = iterable.length;
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| 29 | for (i = 0; i < length; ++i) {
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| 30 | char = iterable[i];
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| 31 | if (i + 1 < length) {
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| 32 | code = char.charCodeAt(0);
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| 33 | if (code >= 0xd800 && code <= 0xdbff) char += iterable[++i];
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| 34 | }
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| 35 | call.call(cb, thisArg, char, doBreak);
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| 36 | if (broken) break;
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| 37 | }
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| 38 | return;
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| 39 | }
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| 40 | result = iterable.next();
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| 41 |
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| 42 | while (!result.done) {
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| 43 | call.call(cb, thisArg, result.value, doBreak);
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| 44 | if (broken) return;
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| 45 | result = iterable.next();
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| 46 | }
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| 47 | };
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