| 1978 | // Public: Initializes JSON 3 using the given `context` object, attaching the |
| 1979 | // `stringify` and `parse` functions to the specified `exports` object. |
| 1980 | function runInContext(context, exports) { |
| 1981 | context || (context = root["Object"]()); |
| 1982 | exports || (exports = root["Object"]()); |
| 1983 | |
| 1984 | // Native constructor aliases. |
| 1985 | var Number = context["Number"] || root["Number"], |
| 1986 | String = context["String"] || root["String"], |
| 1987 | Object = context["Object"] || root["Object"], |
| 1988 | Date = context["Date"] || root["Date"], |
| 1989 | SyntaxError = context["SyntaxError"] || root["SyntaxError"], |
| 1990 | TypeError = context["TypeError"] || root["TypeError"], |
| 1991 | Math = context["Math"] || root["Math"], |
| 1992 | nativeJSON = context["JSON"] || root["JSON"]; |
| 1993 | |
| 1994 | // Delegate to the native `stringify` and `parse` implementations. |
| 1995 | if (typeof nativeJSON == "object" && nativeJSON) { |
| 1996 | exports.stringify = nativeJSON.stringify; |
| 1997 | exports.parse = nativeJSON.parse; |
| 1998 | } |
| 1999 | |
| 2000 | // Convenience aliases. |
| 2001 | var objectProto = Object.prototype, |
| 2002 | getClass = objectProto.toString, |
| 2003 | isProperty, forEach, undef; |
| 2004 | |
| 2005 | // Test the `Date#getUTC*` methods. Based on work by @Yaffle. |
| 2006 | var isExtended = new Date(-3509827334573292); |
| 2007 | try { |
| 2008 | // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical |
| 2009 | // results for certain dates in Opera >= 10.53. |
| 2010 | isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 && |
| 2011 | // Safari < 2.0.2 stores the internal millisecond time value correctly, |
| 2012 | // but clips the values returned by the date methods to the range of |
| 2013 | // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]). |
| 2014 | isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708; |
| 2015 | } catch (exception) {} |
| 2016 | |
| 2017 | // Internal: Determines whether the native `JSON.stringify` and `parse` |
| 2018 | // implementations are spec-compliant. Based on work by Ken Snyder. |
| 2019 | function has(name) { |
| 2020 | if (has[name] !== undef) { |
| 2021 | // Return cached feature test result. |
| 2022 | return has[name]; |
| 2023 | } |
| 2024 | var isSupported; |
| 2025 | if (name == "bug-string-char-index") { |
| 2026 | // IE <= 7 doesn't support accessing string characters using square |
| 2027 | // bracket notation. IE 8 only supports this for primitives. |
| 2028 | isSupported = "a"[0] != "a"; |
| 2029 | } else if (name == "json") { |
| 2030 | // Indicates whether both `JSON.stringify` and `JSON.parse` are |
| 2031 | // supported. |
| 2032 | isSupported = has("json-stringify") && has("json-parse"); |
| 2033 | } else { |
| 2034 | var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}'; |
| 2035 | // Test `JSON.stringify`. |
| 2036 | if (name == "json-stringify") { |
| 2037 | var stringify = exports.stringify, stringifySupported = typeof stringify == "function" && isExtended; |