100 lines
9.8 KiB
Plaintext
100 lines
9.8 KiB
Plaintext
define(['exports', 'module', '../utils', '../exception'], function (exports, module, _utils, _exception) {
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'use strict';
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// istanbul ignore next
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
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var _Exception = _interopRequireDefault(_exception);
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module.exports = function (instance) {
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instance.registerHelper('each', function (context, options) {
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if (!options) {
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throw new _Exception['default']('Must pass iterator to #each');
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}
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var fn = options.fn,
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inverse = options.inverse,
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i = 0,
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ret = '',
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data = undefined,
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contextPath = undefined;
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if (options.data && options.ids) {
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contextPath = _utils.appendContextPath(options.data.contextPath, options.ids[0]) + '.';
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}
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if (_utils.isFunction(context)) {
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context = context.call(this);
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}
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if (options.data) {
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data = _utils.createFrame(options.data);
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}
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function execIteration(field, index, last) {
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if (data) {
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data.key = field;
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data.index = index;
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data.first = index === 0;
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data.last = !!last;
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if (contextPath) {
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data.contextPath = contextPath + field;
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}
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}
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ret = ret + fn(context[field], {
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data: data,
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blockParams: _utils.blockParams([context[field], field], [contextPath + field, null])
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});
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}
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if (context && typeof context === 'object') {
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if (_utils.isArray(context)) {
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for (var j = context.length; i < j; i++) {
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if (i in context) {
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execIteration(i, i, i === context.length - 1);
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}
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}
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} else if (global.Symbol && context[global.Symbol.iterator]) {
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var newContext = [];
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var iterator = context[global.Symbol.iterator]();
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for (var it = iterator.next(); !it.done; it = iterator.next()) {
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newContext.push(it.value);
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}
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context = newContext;
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for (var j = context.length; i < j; i++) {
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execIteration(i, i, i === context.length - 1);
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}
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} else {
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(function () {
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var priorKey = undefined;
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Object.keys(context).forEach(function (key) {
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// We're running the iterations one step out of sync so we can detect
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// the last iteration without have to scan the object twice and create
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// an itermediate keys array.
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if (priorKey !== undefined) {
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execIteration(priorKey, i - 1);
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}
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priorKey = key;
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i++;
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});
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if (priorKey !== undefined) {
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execIteration(priorKey, i - 1, true);
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}
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})();
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}
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}
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if (i === 0) {
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ret = inverse(this);
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}
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return ret;
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});
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};
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});
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