private static void ExtractAttributes(ContextAttributes contextAttributes, Dictionary <string, string[]> attributes)
{
try
{
ExtractAttributes(contextAttributes.HighPriorityAttributes, attributes);
if (contextAttributes != null)
{
contextAttributes.Refresh();
foreach (ContextAttribute attr in contextAttributes)
{
var attrCollection = attr.Values as ICollection;
if (attrCollection != null)
{
string[] values = new string[attrCollection.Count];
int i = 0;
foreach (string value in attrCollection)
{
values[i++] = value;
}
attributes.Add(attr.Name, values);
}
}
}
}
catch { }
}
private static void ExtractAttributes(ContextAttributes contextAttributes, Dictionary<string, string[]> attributes)
{
try
{
ExtractAttributes(contextAttributes.HighPriorityAttributes, attributes);
if (contextAttributes != null)
{
contextAttributes.Refresh();
foreach (ContextAttribute attr in contextAttributes)
{
var attrCollection = attr.Values as ICollection;
if (attrCollection != null)
{
string[] values = new string[attrCollection.Count];
int i = 0;
foreach (string value in attrCollection)
{
values[i++] = value;
}
attributes.Add(attr.Name, values);
}
}
}
}
catch { }
}
private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic> customAttributeProviders)
{
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute != null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (customAttributeProviders != null)
{
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 };
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (OriginalType.GetTypeInfo().IsValueType)
{
OriginalNullability = Nullability.NotNullable;
}
else
{
var nullableFlag = _nullableFlags.Length > nullableFlagsIndex ? _nullableFlags[nullableFlagsIndex] : _nullableFlags.Last();
nullableFlagsIndex++;
OriginalNullability = nullableFlag == 0 ? Nullability.Unknown :
nullableFlag == 1 ? Nullability.NotNullable :
nullableFlag == 2 ? Nullability.Nullable :
Nullability.Unknown;
}
}
private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic> customAttributeProviders)
{
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute != null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (customAttributeProviders != null)
{
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 };
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (OriginalType.GetTypeInfo() is var typeInfo && typeInfo.IsValueType)
{
if (typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() != typeof(Nullable <>))
{
nullableFlagsIndex++;
}
OriginalNullability = Nullability.NotNullable;
}
private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic>?customAttributeProviders)
{
var typeInfo = OriginalType.GetTypeInfo();
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute is not null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (typeInfo.IsGenericParameter)
{
nullableAttribute = typeInfo.GetCustomAttributes().FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute is not null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else
{
// Default nullability (NullableContextAttribute) from the context
_nullableFlags = GetFlagsFromCustomAttributeProviders(typeInfo.DeclaringType.IsNested ? new dynamic[] { typeInfo.DeclaringType, typeInfo.DeclaringType.DeclaringType } : new dynamic[] { typeInfo.DeclaringType });
}
}
else if (customAttributeProviders is not null)
{
// Default nullability (NullableContextAttribute) from the context
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 }; // Unknown
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (typeInfo.IsValueType)
{
if (typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() != typeof(Nullable <>))
{
nullableFlagsIndex++;
}
OriginalNullability = Nullability.NotNullable;
}
else
{
var nullableFlag = _nullableFlags.Length > nullableFlagsIndex ? _nullableFlags[nullableFlagsIndex] : _nullableFlags.Last();
nullableFlagsIndex++;
OriginalNullability = nullableFlag == 0 ? Nullability.Unknown :
nullableFlag == 1 ? Nullability.NotNullable :
nullableFlag == 2 ? Nullability.Nullable :
Nullability.Unknown;
}
}
/// <summary>
/// Gets the attributes of the given type which are defined on the context or on the type.
/// </summary>
/// <typeparam name="T">The attribute type.</typeparam>
/// <returns>The attributes.</returns>
public IEnumerable <T> GetAttributes <T>()
{
return(ContextAttributes.OfType <T>().Concat(TypeAttributes.OfType <T>()));
}
/// <summary>
/// Gets an attribute of the given type which is defined on the context or on the type.
/// </summary>
/// <typeparam name="T">The attribute type.</typeparam>
/// <returns>The attribute or null.</returns>
public T?GetAttribute <T>()
{
return(ContextAttributes.OfType <T>().Concat(TypeAttributes.OfType <T>()).FirstOrDefault());
}
/// <summary>
/// Gets an attribute of the given type which is defined on the context (property, field, parameter or contextual generic argument type).
/// </summary>
/// <typeparam name="T">The attribute type.</typeparam>
/// <returns>The attribute or null.</returns>
public T?GetContextAttribute <T>()
{
return(ContextAttributes.OfType <T>().SingleOrDefault());
}
/// <summary>Implements the Exec method of the IDTCommandTarget interface. This is called when the command is invoked.</summary>
/// <param term='commandName'>The name of the command to execute.</param>
/// <param term='executeOption'>Describes how the command should be run.</param>
/// <param term='varIn'>Parameters passed from the caller to the command handler.</param>
/// <param term='varOut'>Parameters passed from the command handler to the caller.</param>
/// <param term='handled'>Informs the caller if the command was handled or not.</param>
/// <seealso class='Exec' />
public void Exec(string commandName, vsCommandExecOption executeOption, ref object varIn, ref object varOut, ref bool handled)
{
if (executeOption == vsCommandExecOption.vsCommandExecOptionDoDefault)
{
if (commandName == "ReplaceF1.Connect.ReplaceF1")
{
// Get a reference to Solution Explorer.
Window activeWindow = _applicationObject.ActiveWindow;
ContextAttributes contextAttributes = activeWindow.DTE.ContextAttributes;
contextAttributes.Refresh();
List <string> attributes = new List <string>();
try
{
ContextAttributes highPri = contextAttributes == null ? null : contextAttributes.HighPriorityAttributes;
highPri.Refresh();
if (highPri != null)
{
foreach (ContextAttribute CA in highPri)
{
List <string> values = new List <string>();
foreach (string value in (ICollection)CA.Values)
{
values.Add(value);
}
string attribute = CA.Name + "=" + String.Join(";", values.ToArray());
attributes.Add(CA.Name + "=");
}
}
}
catch (System.Runtime.InteropServices.COMException e)
{
// ignore this exception-- means there's no High Pri values here
string x = e.Message;
}
catch (System.Reflection.TargetInvocationException e)
{
// ignore this exception-- means there's no High Pri values here
string x = e.Message;
}
catch (System.Exception e)
{
System.Windows.Forms.MessageBox.Show(e.Message);
// ignore this exception-- means there's no High Pri values here
string x = e.Message;
}
// fetch context attributes that are not high-priority
foreach (ContextAttribute CA in contextAttributes)
{
List <string> values = new List <string>();
foreach (string value in (ICollection)CA.Values)
{
values.Add(value);
}
string attribute = CA.Name + "=" + String.Join(";", values.ToArray());
attributes.Add(attribute);
}
// Replace this call with whatever you want to do with the help context info
HelpHandler.HandleF1(attributes);
}
}
}
