/* ES5 15.12.2. */
JSBool
js_json_parse(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
/* Step 1. */
JSString *str = (argc >= 1) ? ToString(cx, args[0]) : cx->names().undefined;
if (!str)
return false;
JSStableString *stable = str->ensureStable(cx);
if (!stable)
return false;
JS::Anchor<JSString *> anchor(stable);
RootedValue reviver(cx, (argc >= 2) ? args[1] : UndefinedValue());
/* Steps 2-5. */
return ParseJSONWithReviver(cx, stable->chars(), stable->length(), reviver, args.rval());
}
bool
JSStructuredCloneReader::startRead(Value *vp)
{
uint32_t tag, data;
if (!in.readPair(&tag, &data))
return false;
switch (tag) {
case SCTAG_NULL:
vp->setNull();
break;
case SCTAG_UNDEFINED:
vp->setUndefined();
break;
case SCTAG_BOOLEAN:
case SCTAG_BOOLEAN_OBJECT:
vp->setBoolean(!!data);
if (tag == SCTAG_BOOLEAN_OBJECT && !js_PrimitiveToObject(context(), vp))
return false;
break;
case SCTAG_STRING:
case SCTAG_STRING_OBJECT: {
JSString *str = readString(data);
if (!str)
return false;
vp->setString(str);
if (tag == SCTAG_STRING_OBJECT && !js_PrimitiveToObject(context(), vp))
return false;
break;
}
case SCTAG_NUMBER_OBJECT: {
double d;
if (!in.readDouble(&d) || !checkDouble(d))
return false;
vp->setDouble(d);
if (!js_PrimitiveToObject(context(), vp))
return false;
break;
}
case SCTAG_DATE_OBJECT: {
double d;
if (!in.readDouble(&d) || !checkDouble(d))
return false;
if (!IsNaN(d) && d != TimeClip(d)) {
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL, JSMSG_SC_BAD_SERIALIZED_DATA,
"date");
return false;
}
JSObject *obj = js_NewDateObjectMsec(context(), d);
if (!obj)
return false;
vp->setObject(*obj);
break;
}
case SCTAG_REGEXP_OBJECT: {
RegExpFlag flags = RegExpFlag(data);
uint32_t tag2, nchars;
if (!in.readPair(&tag2, &nchars))
return false;
if (tag2 != SCTAG_STRING) {
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL, JSMSG_SC_BAD_SERIALIZED_DATA,
"regexp");
return false;
}
JSString *str = readString(nchars);
if (!str)
return false;
JSStableString *stable = str->ensureStable(context());
if (!stable)
return false;
size_t length = stable->length();
const StableCharPtr chars = stable->chars();
RegExpObject *reobj = RegExpObject::createNoStatics(context(), chars.get(), length, flags, NULL);
if (!reobj)
return false;
vp->setObject(*reobj);
break;
}
case SCTAG_ARRAY_OBJECT:
case SCTAG_OBJECT_OBJECT: {
JSObject *obj = (tag == SCTAG_ARRAY_OBJECT)
? NewDenseEmptyArray(context())
: NewBuiltinClassInstance(context(), &ObjectClass);
if (!obj || !objs.append(ObjectValue(*obj)))
return false;
vp->setObject(*obj);
break;
}
case SCTAG_BACK_REFERENCE_OBJECT: {
if (data >= allObjs.length()) {
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL,
JSMSG_SC_BAD_SERIALIZED_DATA,
"invalid back reference in input");
return false;
}
*vp = allObjs[data];
return true;
}
case SCTAG_TRANSFER_MAP_HEADER:
// A map header cannot be here but just at the beginning of the buffer.
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL,
JSMSG_SC_BAD_SERIALIZED_DATA,
"invalid input");
return false;
case SCTAG_TRANSFER_MAP:
// A map cannot be here but just at the beginning of the buffer.
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL,
JSMSG_SC_BAD_SERIALIZED_DATA,
"invalid input");
return false;
case SCTAG_ARRAY_BUFFER_OBJECT:
if (!readArrayBuffer(data, vp))
return false;
break;
case SCTAG_TYPED_ARRAY_OBJECT:
// readTypedArray adds the array to allObjs
uint64_t arrayType;
if (!in.read(&arrayType))
return false;
return readTypedArray(arrayType, data, vp);
break;
default: {
if (tag <= SCTAG_FLOAT_MAX) {
double d = ReinterpretPairAsDouble(tag, data);
if (!checkDouble(d))
return false;
vp->setNumber(d);
break;
}
if (SCTAG_TYPED_ARRAY_V1_MIN <= tag && tag <= SCTAG_TYPED_ARRAY_V1_MAX) {
// A v1-format typed array
// readTypedArray adds the array to allObjs
return readTypedArray(TagToV1ArrayType(tag), data, vp, true);
}
if (!callbacks || !callbacks->read) {
JS_ReportErrorNumber(context(), js_GetErrorMessage, NULL, JSMSG_SC_BAD_SERIALIZED_DATA,
"unsupported type");
return false;
}
JSObject *obj = callbacks->read(context(), this, tag, data, closure);
if (!obj)
return false;
vp->setObject(*obj);
}
}
if (vp->isObject() && !allObjs.append(*vp))
return false;
return true;
}