|
public static CreateFunction ( IeJsNativeFunction function ) : |
||
| function | IeJsNativeFunction | The method to call when the function is invoked |
| return | ||
private IeJsValue CreateFunctionFromDelegate(Delegate value)
{
IeJsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
object[] processedArgs = MapToHostType(args.Skip(1).ToArray());
ParameterInfo[] parameters = value.GetMethodInfo().GetParameters();
IeJsValue undefinedValue = IeJsValue.Undefined;
ReflectionHelpers.FixArgumentTypes(ref processedArgs, parameters);
object result;
try
{
result = value.DynamicInvoke(processedArgs);
}
catch (Exception e)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateError(
string.Format(NetCoreStrings.Runtime_HostDelegateInvocationFailed, e.Message));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
IeJsValue resultValue = MapToScriptType(result);
return(resultValue);
};
_nativeFunctions.Add(nativeFunction);
IeJsValue functionValue = IeJsValue.CreateFunction(nativeFunction);
return(functionValue);
}
private void ProjectMethods(IeJsValue target, Type type, bool instance)
{
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
MethodInfo[] methods = type.GetMethods(defaultBindingFlags);
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();
IeJsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
IeJsValue thisValue = args[0];
IeJsValue undefinedValue = IeJsValue.Undefined;
object thisObj = null;
if (instance)
{
if (!thisValue.HasExternalData)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateTypeError(
string.Format(NetCoreStrings.Runtime_InvalidThisContextForHostObjectMethod, methodName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
thisObj = MapToHostType(thisValue);
}
object[] processedArgs = MapToHostType(args.Skip(1).ToArray());
var bestFitMethod = (MethodInfo)ReflectionHelpers.GetBestFitMethod(
methodCandidates, processedArgs);
if (bestFitMethod == null)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateReferenceError(
string.Format(NetCoreStrings.Runtime_SuitableMethodOfHostObjectNotFound, methodName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitMethod.GetParameters());
object result;
try
{
result = bestFitMethod.Invoke(thisObj, processedArgs);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
NetCoreStrings.Runtime_HostObjectMethodInvocationFailed, methodName, e.Message)
:
string.Format(
NetCoreStrings.Runtime_HostTypeMethodInvocationFailed, methodName, typeName, e.Message)
;
IeJsValue errorValue = IeJsErrorHelpers.CreateError(errorMessage);
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
IeJsValue resultValue = MapToScriptType(result);
return(resultValue);
};
_nativeFunctions.Add(nativeFunction);
IeJsValue methodValue = IeJsValue.CreateFunction(nativeFunction);
target.SetProperty(methodName, methodValue, true);
}
}
private void ProjectProperties(IeJsValue target, Type type, bool instance)
{
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
PropertyInfo[] properties = type.GetProperties(defaultBindingFlags);
foreach (PropertyInfo property in properties)
{
string propertyName = property.Name;
IeJsValue descriptorValue = IeJsValue.CreateObject();
descriptorValue.SetProperty("enumerable", IeJsValue.True, true);
if (property.GetGetMethod() != null)
{
IeJsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
IeJsValue thisValue = args[0];
IeJsValue undefinedValue = IeJsValue.Undefined;
object thisObj = null;
if (instance)
{
if (!thisValue.HasExternalData)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateTypeError(
string.Format(NetCoreStrings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
thisObj = MapToHostType(thisValue);
}
object result;
try
{
result = property.GetValue(thisObj, new object[0]);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
NetCoreStrings.Runtime_HostObjectPropertyGettingFailed, propertyName, e.Message)
:
string.Format(
NetCoreStrings.Runtime_HostTypePropertyGettingFailed, propertyName, typeName, e.Message)
;
IeJsValue errorValue = IeJsErrorHelpers.CreateError(errorMessage);
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
IeJsValue resultValue = MapToScriptType(result);
return(resultValue);
};
_nativeFunctions.Add(nativeFunction);
IeJsValue getMethodValue = IeJsValue.CreateFunction(nativeFunction);
descriptorValue.SetProperty("get", getMethodValue, true);
}
if (property.GetSetMethod() != null)
{
IeJsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
IeJsValue thisValue = args[0];
IeJsValue undefinedValue = IeJsValue.Undefined;
object thisObj = null;
if (instance)
{
if (!thisValue.HasExternalData)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateTypeError(
string.Format(NetCoreStrings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
thisObj = MapToHostType(thisValue);
}
object value = MapToHostType(args.Skip(1).First());
ReflectionHelpers.FixPropertyValueType(ref value, property);
try
{
property.SetValue(thisObj, value, new object[0]);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
NetCoreStrings.Runtime_HostObjectPropertySettingFailed, propertyName, e.Message)
:
string.Format(
NetCoreStrings.Runtime_HostTypePropertySettingFailed, propertyName, typeName, e.Message)
;
IeJsValue errorValue = IeJsErrorHelpers.CreateError(errorMessage);
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
return(undefinedValue);
};
_nativeFunctions.Add(nativeFunction);
IeJsValue setMethodValue = IeJsValue.CreateFunction(nativeFunction);
descriptorValue.SetProperty("set", setMethodValue, true);
}
target.DefineProperty(propertyName, descriptorValue);
}
}
private IeJsValue CreateConstructor(Type type)
{
TypeInfo typeInfo = type.GetTypeInfo();
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(true);
ConstructorInfo[] constructors = type.GetConstructors(defaultBindingFlags);
IeJsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
IeJsValue resultValue;
IeJsValue undefinedValue = IeJsValue.Undefined;
object[] processedArgs = MapToHostType(args.Skip(1).ToArray());
object result;
if (processedArgs.Length == 0 && typeInfo.IsValueType)
{
result = Activator.CreateInstance(type);
resultValue = MapToScriptType(result);
return(resultValue);
}
if (constructors.Length == 0)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateError(
string.Format(NetCoreStrings.Runtime_HostTypeConstructorNotFound, typeName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
var bestFitConstructor = (ConstructorInfo)ReflectionHelpers.GetBestFitMethod(
constructors, processedArgs);
if (bestFitConstructor == null)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateReferenceError(
string.Format(NetCoreStrings.Runtime_SuitableConstructorOfHostTypeNotFound, typeName));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitConstructor.GetParameters());
try
{
result = bestFitConstructor.Invoke(processedArgs);
}
catch (Exception e)
{
IeJsValue errorValue = IeJsErrorHelpers.CreateError(
string.Format(NetCoreStrings.Runtime_HostTypeConstructorInvocationFailed, typeName, e.Message));
IeJsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
resultValue = MapToScriptType(result);
return(resultValue);
};
_nativeFunctions.Add(nativeFunction);
IeJsValue constructorValue = IeJsValue.CreateFunction(nativeFunction);
return(constructorValue);
}
