VXIcharToJschar(const VXIchar * x) : cstr(NULL), len(0)
{
if (x == NULL) return;
len = wcslen(x);
cstr = new jschar[len + 1];
if (cstr == NULL) return;
for (unsigned int i = 0; i < len + 1; ++i)
// We throw out any surrogate characters (0xD800 - 0xDFFF)
cstr[i] = ((x[i] ^ 0xD800) < 0x0100) ? jschar(0xBF) : jschar(x[i]);
}
JSBool
js_Stringify(JSContext *cx, jsval *vp, JSObject *replacer,
JSONWriteCallback callback, void *data, uint32 depth)
{
if (depth > JSON_MAX_DEPTH)
return JS_FALSE; /* encoding error */
JSBool ok = JS_TRUE;
JSObject *obj = JSVAL_TO_OBJECT(*vp);
JSBool isArray = JS_IsArrayObject(cx, obj);
jschar output = jschar(isArray ? '[' : '{');
if (!callback(&output, 1, data))
return JS_FALSE;
JSObject *iterObj = NULL;
jsint i = 0;
jsuint length = 0;
if (isArray) {
if (!JS_GetArrayLength(cx, obj, &length))
return JS_FALSE;
} else {
if (!js_ValueToIterator(cx, JSITER_ENUMERATE, vp))
return JS_FALSE;
iterObj = JSVAL_TO_OBJECT(*vp);
}
jsval outputValue = JSVAL_VOID;
JSAutoTempValueRooter tvr(cx, 1, &outputValue);
jsval key;
JSBool memberWritten = JS_FALSE;
do {
outputValue = JSVAL_VOID;
if (isArray) {
if ((jsuint)i >= length)
break;
ok = JS_GetElement(cx, obj, i++, &outputValue);
} else {
ok = js_CallIteratorNext(cx, iterObj, &key);
if (!ok)
break;
if (key == JSVAL_HOLE)
break;
JSString *ks;
if (JSVAL_IS_STRING(key)) {
ks = JSVAL_TO_STRING(key);
} else {
ks = JS_ValueToString(cx, key);
if (!ks) {
ok = JS_FALSE;
break;
}
}
ok = JS_GetUCProperty(cx, obj, JS_GetStringChars(ks),
JS_GetStringLength(ks), &outputValue);
}
if (!ok)
break;
// if this is an array, holes are transmitted as null
if (isArray && outputValue == JSVAL_VOID) {
outputValue = JSVAL_NULL;
} else if (JSVAL_IS_OBJECT(outputValue)) {
ok = js_TryJSON(cx, &outputValue);
if (!ok)
break;
}
// elide undefined values
if (outputValue == JSVAL_VOID)
continue;
// output a comma unless this is the first member to write
if (memberWritten) {
output = jschar(',');
ok = callback(&output, 1, data);
if (!ok)
break;
}
memberWritten = JS_TRUE;
JSType type = JS_TypeOfValue(cx, outputValue);
// Can't encode these types, so drop them
if (type == JSTYPE_FUNCTION || type == JSTYPE_XML)
break;
// Be careful below, this string is weakly rooted.
JSString *s;
// If this isn't an array, we need to output a key
if (!isArray) {
s = JS_ValueToString(cx, key);
if (!s) {
ok = JS_FALSE;
break;
}
ok = write_string(cx, callback, data, JS_GetStringChars(s), JS_GetStringLength(s));
if (!ok)
break;
output = jschar(':');
ok = callback(&output, 1, data);
if (!ok)
break;
}
if (!JSVAL_IS_PRIMITIVE(outputValue)) {
// recurse
ok = js_Stringify(cx, &outputValue, replacer, callback, data, depth + 1);
} else {
JSString *outputString;
s = JS_ValueToString(cx, outputValue);
if (!s) {
ok = JS_FALSE;
break;
}
if (type == JSTYPE_STRING) {
ok = write_string(cx, callback, data, JS_GetStringChars(s), JS_GetStringLength(s));
if (!ok)
break;
continue;
}
if (type == JSTYPE_NUMBER) {
if (JSVAL_IS_DOUBLE(outputValue)) {
jsdouble d = *JSVAL_TO_DOUBLE(outputValue);
if (!JSDOUBLE_IS_FINITE(d))
outputString = JS_NewStringCopyN(cx, "null", 4);
else
outputString = s;
} else {
outputString = s;
}
} else if (type == JSTYPE_BOOLEAN) {
outputString = s;
} else if (JSVAL_IS_NULL(outputValue)) {
outputString = JS_NewStringCopyN(cx, "null", 4);
} else {
ok = JS_FALSE; // encoding error
break;
}
ok = callback(JS_GetStringChars(outputString), JS_GetStringLength(outputString), data);
}
} while (ok);
if (iterObj) {
// Always close the iterator, but make sure not to stomp on OK
js_CloseIteratorState(cx, iterObj);
// encoding error or propagate? FIXME: Bug 408838.
}
if (!ok) {
JS_ReportError(cx, "Error during JSON encoding.");
return JS_FALSE;
}
output = jschar(isArray ? ']' : '}');
ok = callback(&output, 1, data);
return ok;
}
JSBool
js_TryJSON(JSContext *cx, jsval *vp)
{
// Checks whether the return value implements toJSON()
JSBool ok = JS_TRUE;
if (!JSVAL_IS_PRIMITIVE(*vp)) {
JSObject *obj = JSVAL_TO_OBJECT(*vp);
ok = js_TryMethod(cx, obj, cx->runtime->atomState.toJSONAtom, 0, NULL, vp);
}
return ok;
}
static const jschar quote = jschar('"');
static const jschar backslash = jschar('\\');
static const jschar unicodeEscape[] = {'\\', 'u', '0', '0'};
static JSBool
write_string(JSContext *cx, JSONWriteCallback callback, void *data, const jschar *buf, uint32 len)
{
if (!callback("e, 1, data))
return JS_FALSE;
uint32 mark = 0;
uint32 i;
for (i = 0; i < len; ++i) {
if (buf[i] == quote || buf[i] == backslash) {
if (!callback(&buf[mark], i - mark, data) || !callback(&backslash, 1, data) ||
!callback(&buf[i], 1, data)) {
