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68 lines
1.9 KiB
68 lines
1.9 KiB
var Class = require('./Class');
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var safeSet = require('./safeSet');
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var safeGet = require('./safeGet');
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var map = require('./map');
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var filter = require('./filter');
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var isFn = require('./isFn');
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var safeDel = require('./safeDel');
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var toArr = require('./toArr');
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var each = require('./each');
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exports = Class({
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className: 'JsonTransformer',
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initialize: function(data) {
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this._data = data || {};
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},
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set: function(key, val) {
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if (arguments.length === 1) {
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this._data = key;
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return this;
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}
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safeSet(this._data, key, val);
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return this;
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},
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get: function(key) {
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if (key == null) return this._data;
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return safeGet(this._data, key);
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},
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map: function(from, to, fn) {
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if (isFn(from)) return this.set(map(this._data, from, this));
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if (isFn(to)) {
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fn = to;
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to = from;
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}
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return this.set(to, map(this.get(from), fn, this));
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},
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filter: function(from, to, fn) {
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if (isFn(from)) return this.set(filter(this._data, from, this));
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if (isFn(to)) {
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fn = to;
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to = from;
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}
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return this.set(to, filter(this.get(from), fn, this));
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},
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remove: function(keys) {
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keys = toArr(keys);
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var data = this._data;
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each(keys, function(key) {
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safeDel(data, key);
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});
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return this;
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},
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compute: function(from, to, fn) {
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if (isFn(from)) return this.set(from.call(this, this._data));
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if (isFn(to)) return this.set(from, to.call(this, this.get(from)));
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from = map(
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toArr(from),
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function(key) {
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return safeGet(this._data, key);
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},
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this
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);
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return this.set(to, fn.apply(this, from));
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},
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toString: function() {
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return JSON.stringify(this._data);
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}
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});
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module.exports = exports;
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