std::string Value::toJSONString(unsigned indent) const {
JSValueRef exn;
auto stringToAdopt = JSC_JSValueCreateJSONString(m_context, m_value, indent, &exn);
if (!stringToAdopt) {
throw JSException(m_context, exn, "Exception creating JSON string");
}
return String::adopt(m_context, stringToAdopt).str();
}
void Object::setProperty(const String& propName, const Value& value) {
JSValueRef exn = nullptr;
JSC_JSObjectSetProperty(m_context, m_obj, propName, value, kJSPropertyAttributeNone, &exn);
if (exn) {
throw JSException(m_context, exn, folly::to<std::string>(
"Failed to set property '", propName.str(), "'").c_str());
}
}
void Object::setPropertyAtIndex(unsigned int index, const Value& value) {
JSValueRef exn = nullptr;
JSC_JSObjectSetPropertyAtIndex(m_context, m_obj, index, value, &exn);
if (exn) {
throw JSException(m_context, exn, folly::to<std::string>(
"Failed to set property at index ", index).c_str());
}
}
Value Object::callAsFunction(JSObjectRef thisObj, int nArgs, const JSValueRef args[]) const {
JSValueRef exn;
JSValueRef result = JSC_JSObjectCallAsFunction(m_context, m_obj, thisObj, nArgs, args, &exn);
if (!result) {
throw JSException(m_context, exn, "Exception calling object as function");
}
return Value(m_context, result);
}
Object Object::callAsConstructor(std::initializer_list<JSValueRef> args) const {
JSValueRef exn;
JSObjectRef result = JSC_JSObjectCallAsConstructor(m_context, m_obj, args.size(), args.begin(), &exn);
if (!result) {
throw JSException(m_context, exn, "Exception calling object as constructor");
}
return Object(m_context, result);
}
String Value::toString() const {
JSValueRef exn;
JSStringRef jsStr = JSC_JSValueToStringCopy(context(), m_value, &exn);
if (!jsStr) {
throw JSException(m_context, exn, "Failed to convert to string");
}
return String::adopt(context(), jsStr);
}
Object Value::asObject() const {
JSValueRef exn;
JSObjectRef jsObj = JSC_JSValueToObject(context(), m_value, &exn);
if (!jsObj) {
throw JSException(m_context, exn, "Failed to convert to object");
}
return Object(context(), jsObj);
}
JSValueRef evaluateSourceCode(JSContextRef context, JSSourceCodeRef source, JSStringRef sourceURL) {
JSValueRef exn, result;
result = JSEvaluateSourceCode(context, source, NULL, &exn);
if (result == nullptr) {
throw JSException(context, exn, sourceURL);
}
return result;
}
JSValueRef evaluateScript(JSContextRef context, JSStringRef script, JSStringRef sourceURL) {
JSValueRef exn, result;
result = JSC_JSEvaluateScript(context, script, NULL, sourceURL, 0, &exn);
if (result == nullptr) {
throw JSException(context, exn, sourceURL);
}
return result;
}
/* static */
Value Value::fromJSON(JSContextRef ctx, const String& json) {
auto result = JSC_JSValueMakeFromJSONString(ctx, json);
if (!result) {
throw JSException(folly::to<std::string>(
"Failed to create Value from JSON: ", json.str()).c_str());
}
return Value(ctx, result);
}
Value Object::getPropertyAtIndex(unsigned int index) const {
JSValueRef exn;
JSValueRef property = JSC_JSObjectGetPropertyAtIndex(m_context, m_obj, index, &exn);
if (!property) {
throw JSException(m_context, exn, folly::to<std::string>(
"Failed to get property at index ", index).c_str());
}
return Value(m_context, property);
}
Value Object::getProperty(const String& propName) const {
JSValueRef exn;
JSValueRef property = JSC_JSObjectGetProperty(m_context, m_obj, propName, &exn);
if (!property) {
throw JSException(m_context, exn, folly::to<std::string>(
"Failed to get property '", propName.str(), "'").c_str());
}
return Value(m_context, property);
}
Value Value::makeError(JSContextRef ctx, const char *error)
{
JSValueRef exn;
JSValueRef args[] = { Value(ctx, String(ctx, error)) };
JSObjectRef errorObj = JSC_JSObjectMakeError(ctx, 1, args, &exn);
if (!errorObj) {
throw JSException(ctx, exn, "Exception making error");
}
return Value(ctx, errorObj);
}
Value Value::makeError(JSContextRef ctx, const char *error, const char *stack)
{
auto errorMsg = Value(ctx, String(ctx, error));
JSValueRef args[] = {errorMsg};
if (stack) {
// Using this instead of JSObjectMakeError to actually get a stack property.
// MakeError only sets it stack when returning from the invoked function, so we
// can't extend it here.
auto errorConstructor = Object::getGlobalObject(ctx).getProperty("Error").asObject();
auto jsError = errorConstructor.callAsConstructor({errorMsg});
auto fullStack = std::string(stack) + jsError.getProperty("stack").toString().str();
jsError.setProperty("stack", String(ctx, fullStack.c_str()));
return jsError;
} else {
JSValueRef exn;
JSObjectRef errorObj = JSC_JSObjectMakeError(ctx, 1, args, &exn);
if (!errorObj) {
throw JSException(ctx, exn, "Exception making error");
}
return Value(ctx, errorObj);
}
}