private void ProjectMethods(EmbeddedItem externalItem)
{
Type type = externalItem.HostType;
object obj = externalItem.HostObject;
JsValue typeValue = externalItem.ScriptValue;
IList <JsNativeFunction> nativeFunctions = externalItem.NativeFunctions;
bool instance = externalItem.IsInstance;
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
IEnumerable <MethodInfo> methods = type.GetMethods(defaultBindingFlags)
.Where(ReflectionHelpers.IsFullyFledgedMethod);
IEnumerable <IGrouping <string, MethodInfo> > methodGroups = methods.GroupBy(m => m.Name);
foreach (IGrouping <string, MethodInfo> methodGroup in methodGroups)
{
string methodName = methodGroup.Key;
MethodInfo[] methodCandidates = methodGroup.ToArray();
JsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectMethod, methodName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object[] processedArgs = GetHostItemMemberArguments(args);
var bestFitMethod = (MethodInfo)ReflectionHelpers.GetBestFitMethod(
methodCandidates, processedArgs);
if (bestFitMethod == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateReferenceError(
string.Format(Strings.Runtime_SuitableMethodOfHostObjectNotFound, methodName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitMethod.GetParameters());
object result;
try
{
result = bestFitMethod.Invoke(obj, processedArgs);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
Strings.Runtime_HostObjectMethodInvocationFailed, methodName, e.Message)
:
string.Format(
Strings.Runtime_HostTypeMethodInvocationFailed, methodName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
JsValue resultValue = MapToScriptType(result);
return(resultValue);
};
nativeFunctions.Add(nativeFunction);
JsValue methodValue = JsValue.CreateFunction(nativeFunction);
typeValue.SetProperty(methodName, methodValue, true);
}
}
private static void CreateAndSetTypeError(string message)
{
JsValue errorValue = JsErrorHelpers.CreateTypeError(message);
JsErrorHelpers.SetException(errorValue);
}
private void ProjectProperties(EmbeddedItem externalItem)
{
Type type = externalItem.HostType;
object obj = externalItem.HostObject;
JsValue typeValue = externalItem.ScriptValue;
IList <JsNativeFunction> nativeFunctions = externalItem.NativeFunctions;
bool instance = externalItem.IsInstance;
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
PropertyInfo[] properties = type.GetProperties(defaultBindingFlags);
foreach (PropertyInfo property in properties)
{
string propertyName = property.Name;
JsValue descriptorValue = JsValue.CreateObject();
descriptorValue.SetProperty("enumerable", JsValue.True, true);
if (property.GetGetMethod() != null)
{
JsNativeFunction nativeGetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object result;
try
{
result = property.GetValue(obj, new object[0]);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
Strings.Runtime_HostObjectPropertyGettingFailed, propertyName, e.Message)
:
string.Format(
Strings.Runtime_HostTypePropertyGettingFailed, propertyName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
JsValue resultValue = MapToScriptType(result);
return(resultValue);
};
nativeFunctions.Add(nativeGetFunction);
JsValue getMethodValue = JsValue.CreateFunction(nativeGetFunction);
descriptorValue.SetProperty("get", getMethodValue, true);
}
if (property.GetSetMethod() != null)
{
JsNativeFunction nativeSetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object value = MapToHostType(args[1]);
ReflectionHelpers.FixPropertyValueType(ref value, property);
try
{
property.SetValue(obj, value, new object[0]);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
Strings.Runtime_HostObjectPropertySettingFailed, propertyName, e.Message)
:
string.Format(
Strings.Runtime_HostTypePropertySettingFailed, propertyName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
return(JsValue.Undefined);
};
nativeFunctions.Add(nativeSetFunction);
JsValue setMethodValue = JsValue.CreateFunction(nativeSetFunction);
descriptorValue.SetProperty("set", setMethodValue, true);
}
typeValue.DefineProperty(propertyName, descriptorValue);
}
}
