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- 'use strict';
- var $ = require('../internals/export');
- var FREEZING = require('../internals/freezing');
- var NATIVE_RAW_JSON = require('../internals/native-raw-json');
- var getBuiltIn = require('../internals/get-built-in');
- var call = require('../internals/function-call');
- var uncurryThis = require('../internals/function-uncurry-this');
- var isCallable = require('../internals/is-callable');
- var isRawJSON = require('../internals/is-raw-json');
- var toString = require('../internals/to-string');
- var createProperty = require('../internals/create-property');
- var parseJSONString = require('../internals/parse-json-string');
- var getReplacerFunction = require('../internals/get-json-replacer-function');
- var uid = require('../internals/uid');
- var setInternalState = require('../internals/internal-state').set;
- var $String = String;
- var $SyntaxError = SyntaxError;
- var parse = getBuiltIn('JSON', 'parse');
- var $stringify = getBuiltIn('JSON', 'stringify');
- var create = getBuiltIn('Object', 'create');
- var freeze = getBuiltIn('Object', 'freeze');
- var at = uncurryThis(''.charAt);
- var slice = uncurryThis(''.slice);
- var exec = uncurryThis(/./.exec);
- var push = uncurryThis([].push);
- var MARK = uid();
- var MARK_LENGTH = MARK.length;
- var ERROR_MESSAGE = 'Unacceptable as raw JSON';
- var IS_WHITESPACE = /^[\t\n\r ]$/;
- // `JSON.parse` method
- // https://tc39.es/proposal-json-parse-with-source/#sec-json.israwjson
- // https://github.com/tc39/proposal-json-parse-with-source
- $({ target: 'JSON', stat: true, forced: !NATIVE_RAW_JSON }, {
- rawJSON: function rawJSON(text) {
- var jsonString = toString(text);
- if (jsonString === '' || exec(IS_WHITESPACE, at(jsonString, 0)) || exec(IS_WHITESPACE, at(jsonString, jsonString.length - 1))) {
- throw new $SyntaxError(ERROR_MESSAGE);
- }
- var parsed = parse(jsonString);
- if (typeof parsed == 'object' && parsed !== null) throw new $SyntaxError(ERROR_MESSAGE);
- var obj = create(null);
- setInternalState(obj, { type: 'RawJSON' });
- createProperty(obj, 'rawJSON', jsonString);
- return FREEZING ? freeze(obj) : obj;
- }
- });
- // `JSON.stringify` method
- // https://tc39.es/ecma262/#sec-json.stringify
- // https://github.com/tc39/proposal-json-parse-with-source
- if ($stringify) $({ target: 'JSON', stat: true, arity: 3, forced: !NATIVE_RAW_JSON }, {
- stringify: function stringify(text, replacer, space) {
- var replacerFunction = getReplacerFunction(replacer);
- var rawStrings = [];
- var json = $stringify(text, function (key, value) {
- // some old implementations (like WebKit) could pass numbers as keys
- var v = isCallable(replacerFunction) ? call(replacerFunction, this, $String(key), value) : value;
- return isRawJSON(v) ? MARK + (push(rawStrings, v.rawJSON) - 1) : v;
- }, space);
- if (typeof json != 'string') return json;
- var result = '';
- var length = json.length;
- for (var i = 0; i < length; i++) {
- var chr = at(json, i);
- if (chr === '"') {
- var end = parseJSONString(json, ++i).end - 1;
- var string = slice(json, i, end);
- result += slice(string, 0, MARK_LENGTH) === MARK
- ? rawStrings[slice(string, MARK_LENGTH)]
- : '"' + string + '"';
- i = end;
- } else result += chr;
- }
- return result;
- }
- });
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