79 lines
2.1 KiB
JavaScript
79 lines
2.1 KiB
JavaScript
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Elm.Native.Json = function(elm) {
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'use strict';
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var Maybe = Elm.Maybe(elm);
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var Dict = Elm.Dict(elm);
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var List = Elm.List(elm);
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var JS = Elm.JavaScript(elm);
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function fromValue(v) {
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switch (v.ctor) {
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case 'Null' : return null;
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case 'String' : return JS.fromString(v._0);
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case 'Object' :
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var obj = {};
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var array = JS.fromList(Dict.toList(v._0));
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for (var i = arr.length; i--; ) {
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obj[JS.fromString(array[i]._0)] = fromValue(array[i]._1);
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}
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return obj;
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case 'Array' :
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var array = JS.fromList(v._0);
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for (var i = array.length; i--; ) {
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array[i] = fromValue(array[i]);
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}
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return array;
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default :
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return v._0;
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}
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}
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function toPrettyJSString(sep, obj) {
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return JSON.stringify(fromValue(obj), null, JS.fromString(sep));
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}
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function toValue(v) {
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switch (typeof v) {
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case 'string' : return { ctor:"String", _0: JS.toString(v) };
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case 'number' : return { ctor:"Number", _0: JS.toFloat(v) };
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case 'boolean': return { ctor:"Bool" , _0: JS.toBool(v) };
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case 'object' :
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if (v === null) return { ctor:"Null" };
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if (v instanceof Array) {
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for (var i = v.length; i--; ) { v[i] = toValue(v[i]); }
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return { ctor:"Array", _0: JS.toList(v) };
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}
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var array = [];
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for (var k in v) array.push(Tuple2(JS.toString(k), toValue(v[k])));
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return { ctor:"Object", _0: Dict.fromList(JS.toList(array)) };
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}
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}
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function fromJSString(str) {
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try {
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return Maybe.Just(toValue(JSON.parse(str)));
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} catch (e) {
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return Maybe.Nothing;
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}
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}
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function recordFromJSString(str) {
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try {
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return Maybe.Just(JS.toRecord(JSON.parse(str)));
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} catch (e) {
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return Maybe.Nothing;
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}
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}
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function recordToPrettyJSString(sep, rec) {
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return JSON.stringify(JS.fromRecord(rec), null, JS.fromString(sep));
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}
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return elm.Native.Json = {
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toPrettyJSString : F2(toPrettyJSString),
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fromJSString : fromJSString,
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recordToPrettyJSString : F2(recordToPrettyJSString),
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recordFromJSString : recordFromJSString
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};
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};
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