private static object GetMemberValue(object obj, string memberInfo)
{
// Check whether we are getting member value from a dynamic object
var dynamicObject = obj as DynamicObject;
if (dynamicObject != null)
{
// Get or create a new call site for property getter
var getter = CallSiteCache.GetOrCreatePropertyGetter(memberInfo);
if (getter == null)
{
throw new ScriptIdNotFoundException(memberInfo);
}
// get property value from dynamic object
return(getter.Target(getter, obj));
}
var bind = RuntimeHost.Binder.BindToMember(obj, memberInfo, true);
if (bind == null)
{
throw new ScriptIdNotFoundException(memberInfo);
}
return(bind.GetValue());
}
private void SetMember(IScriptContext context, object obj, object value)
{
// Check whether we are setting member value for a dynamic object
var dynamicObject = obj as DynamicObject;
if (dynamicObject != null)
{
// Get or create a new call site for a setter
var setter = CallSiteCache.GetOrCreatePropertySetter(_identifier);
if (setter == null)
{
throw new ScriptIdNotFoundException(_identifier);
}
// set property value for the dynamic object
setter.Target(setter, obj, value);
}
else
{
IMemberBinding bind = RuntimeHost.Binder.BindToMember(obj, _identifier, true);
if (bind == null)
{
throw new ScriptIdNotFoundException(_identifier);
}
bind.SetValue(value);
}
context.Result = value;
}
public CallSite(Symbol methodName,
Visibility visibility = Visibility.Public,
IEnumerable <ArgumentKind> argumentKinds = null)
{
MethodName = methodName;
Visibility = visibility;
ArgumentKinds = System.Array.AsReadOnly(argumentKinds?.ToArray() ?? System.Array.Empty <ArgumentKind>());
CallCache = new EmptyCallSiteCache(this);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
// Logic adapted from JsonSerializerInternalReader.CreateDynamic()
// https://github.com/JamesNK/Newtonsoft.Json/blob/master/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalReader.cs#L1751
// By James Newton-King https://github.com/JamesNK
var contract = (JsonDynamicContract)serializer.ContractResolver.ResolveContract(objectType);
if (reader.TokenType == JsonToken.Null)
{
return(null);
}
var jObj = JObject.Load(reader);
var used = new HashSet <string>();
var obj = CreateObject(jObj, objectType, serializer, used);
foreach (var jProperty in jObj.Properties())
{
var memberName = jProperty.Name;
if (used.Contains(memberName))
{
continue;
}
// first attempt to find a settable property, otherwise fall back to a dynamic set without type
JsonProperty property = contract.Properties.GetClosestMatchProperty(memberName);
if (property != null && property.Writable && !property.Ignored)
{
var propertyValue = jProperty.Value.ToObject(property.PropertyType, serializer);
property.ValueProvider.SetValue(obj, propertyValue);
}
else
{
object propertyValue;
if (jProperty.Value.Type == JTokenType.Null)
{
propertyValue = null;
}
else if (jProperty.Value is JValue)
{
// Primitive
propertyValue = ((JValue)jProperty.Value).Value;
}
else
{
propertyValue = jProperty.Value.ToObject <IDynamicMetaObjectProvider>(serializer);
}
// Unfortunately the following is not public!
// contract.TrySetMember(obj, memberName, propertyValue);
// So we have to duplicate the logic of what Json.NET has already done.
CallSiteCache.SetValue(memberName, obj, propertyValue);
}
}
return(obj);
}
public override IMessage Invoke(IMessage msg)
{
var call = msg as IMethodCallMessage;
if (call == null)
{
throw new ArgumentException("QueryLanguageProxy only supports call messages");
}
if (!Session.Current.IsCapturing)
{
return(ForwardCall(call));
}
var method = (System.Reflection.MethodInfo)call.MethodBase;
int skipFrames;
// Walk the stack until we find the first invocation to IQueryLanguage, this is expensive
// but fortunately unique per method so we can cache it.
if (!_skipFrameCount.TryGetValue(method, out skipFrames))
{
skipFrames = -1;
var trace = new StackTrace(0, false);
var frames = trace.GetFrames();
for (int i = 0; i < frames.Length; i++)
{
var dt = frames[i].GetMethod();
if (IsRemotingWrapper(dt))
{
for (; i < frames.Length; i++)
{
if (!IsRemotingWrapper(frames[i].GetMethod()))
{
skipFrames = _skipFrameCount.GetOrAdd(method, i + 1);
break;
}
}
break;
}
}
}
var callSite = skipFrames == -1 ? null : CallSiteCache.Get(skipFrames + 1);
var handler = GetHandler(call, method, callSite);
return(handler(call));
}
public static CallSite Create(MethodInfo info, ushort id, CallSiteCache cache)
{
Type[] args = new Type[7];
var parameters = info.GetParameters();
int i = 0;
if(!info.IsStatic)
{
args[i] = info.DeclaringType;
i++;
}
for (int x = 0; x < parameters.Length; x++, i++)
{
args[i] = parameters[x].ParameterType;
}
for (; i < args.Length; i++)
{
args[i] = typeof(DBNull);
}
var type = typeof(CallSite<,,,,,,>).MakeGenericType(args);
var result = (CallSite)Activator.CreateInstance(type);
result.Arguments = args;
result.Build(info, id, cache);
return result;
}
public override object this[object target, string name]
{
get { return(CallSiteCache.GetValue(name, target)); }
set { CallSiteCache.SetValue(name, target, value); }
}
public abstract void Build(MethodInfo info, ushort id, CallSiteCache cache);
