public MethodMetadataICodeElementAdapter(Method method, TypeDefinition typeDefinition, IList<TypeDescriptor> genericTypes, MetadataReader reader)
: base(typeDefinition, genericTypes, reader)
{
if (method == null)
{
throw new ArgumentNullException("method");
}
this.Method = method;
}
public Property GetPropertyProperties(int token)
{
// The Property's name will be stored in this array. The 1024 is a "magical number", seems like a type's name can be maximum this long. The corhlpr.h also defines a suspicious constant like this: #define MAX_CLASSNAME_LENGTH 1024
var propertyName = new char[1024];
var typeDefToken = 0;
// Number of how many characters were filled in the typeName array.
var nameLength = 0;
// A pointer to the binary metadata signature of the property.
var sigBlob = new IntPtr(0);
var sigBlobLength = 0;
// Property's flags.
var propertyFlags = 0;
// A flag that marks a ValueType
var cplusTypeFlag = 0;
// A constant string value returned by this member.
var defaultValue = new IntPtr(0);
var defaultValueLength = 0;
// method token AddOn
var methodTokenGetter = 0;
// method token RemoveOn
var methodTokenSetter = 0;
var otherMethodTokens = new int[1024];
var otherMethodTokensCount = 0;
// Get the Property's properties.
var hresult = this.import.GetPropertyProps(
token,
ref typeDefToken,
propertyName,
propertyName.Length,
ref nameLength,
ref propertyFlags,
ref sigBlob,
ref sigBlobLength,
ref cplusTypeFlag,
ref defaultValue,
ref defaultValueLength,
ref methodTokenSetter,
ref methodTokenGetter,
otherMethodTokens,
1024,
ref otherMethodTokensCount);
if (hresult != 0)
{
Marshal.ThrowExceptionForHR(hresult);
}
// supress names "" & "\0";
if (nameLength <= 1)
{
// return null for this, we do not need to know about empty base
return null;
}
// Get the Property's name.
var fullTypeName = new string(propertyName, 0, nameLength - 1);
var sigBlobBytes = new byte[sigBlobLength];
for (var byteIndex = 0; byteIndex < sigBlobLength; byteIndex++)
{
sigBlobBytes[byteIndex] = Marshal.ReadByte(sigBlob, byteIndex);
}
var defaultValueBytes = new byte[defaultValueLength];
for (var byteIndex = 0; byteIndex < defaultValueLength; byteIndex++)
{
defaultValueBytes[byteIndex] = Marshal.ReadByte(defaultValue, byteIndex);
}
var otherMethods = new Method[otherMethodTokensCount];
for (var otherMethodTokenIndex = 0; otherMethodTokenIndex < otherMethodTokensCount; otherMethodTokenIndex++)
{
otherMethods[otherMethodTokenIndex] = this.GetMethodProperties(otherMethodTokens[otherMethodTokenIndex]);
}
var propertyProperties = new Property
{
Token = token,
FullName = fullTypeName,
Flags = (CorPropertyAttr)propertyFlags,
CPlusTypeFlag = (CorElementType)cplusTypeFlag,
DefaultValue = defaultValueBytes,
SignatureBlob = sigBlobBytes,
Getter = this.GetMethodProperties(methodTokenGetter),
Setter = methodTokenSetter.IsNotEmpty(CorTokenType.MethodDef) ? this.GetMethodProperties(methodTokenSetter) : null,
Other = otherMethods
};
propertyProperties.ReadSignature(this);
return propertyProperties;
}
public Method GetMethodProperties(int token)
{
object metadataObject = null;
if (this.metadataObjectsCache.TryGetValue(token, out metadataObject))
{
return (Method)metadataObject;
}
// The Method's name will be stored in this array. The 1024 is a "magical number", seems like a type's name can be maximum this long. The corhlpr.h also defines a suspicious constant like this: #define MAX_CLASSNAME_LENGTH 1024
var methodName = new char[1024];
var typeDefToken = 0;
// Number of how many characters were filled in the typeName array.
var nameLength = 0;
// Method's flags.
var attr = 0;
// A pointer to the binary metadata signature of the Method.
var sigBlob = new IntPtr(0);
var sigBlobLength = 0;
// A pointer to the relative virtual address of the Method.
var codeRva = 0;
var methodImplementationFlags = 0;
// Get the Method's properties.
var hresult = this.import.GetMethodProps(
token,
ref typeDefToken,
methodName,
methodName.Length,
ref nameLength,
ref attr,
ref sigBlob,
ref sigBlobLength,
ref codeRva,
ref methodImplementationFlags);
if (hresult != 0)
{
Marshal.ThrowExceptionForHR(hresult);
}
// supress names "" & "\0";
if (nameLength <= 1)
{
// return null for this, we do not need to know about empty base
return null;
}
// Get the Method's name.
var fullTypeName = new string(methodName, 0, nameLength - 1);
var sigBlobBytes = new byte[sigBlobLength];
for (var byteIndex = 0; byteIndex < sigBlobLength; byteIndex++)
{
sigBlobBytes[byteIndex] = Marshal.ReadByte(sigBlob, byteIndex);
}
var methodProperties = new Method
{
Token = token,
FullName = fullTypeName,
Flags = (CorMethodAttr)attr,
SignatureBlob = sigBlobBytes,
CodeRva = codeRva,
ImplementationFlags = (CorMethodImpl)methodImplementationFlags
};
// read method params
methodProperties.Params = this.EnumerateParams(methodProperties).ToArray();
methodProperties.ReadSignature(this);
return methodProperties;
}
public Event GetEventProperties(int token)
{
// The Event's name will be stored in this array. The 1024 is a "magical number", seems like a type's name can be maximum this long. The corhlpr.h also defines a suspicious constant like this: #define MAX_CLASSNAME_LENGTH 1024
var eventName = new char[1024];
var typeDefToken = 0;
// Number of how many characters were filled in the typeName array.
var nameLength = 0;
// Event's flags.
var eventFlags = 0;
// A pointer to a TypeRef or TypeDef metadata token representing the Delegate type of the event.
var eventTypeToken = 0;
// method token AddOn
var methodTokenAddOn = 0;
// method token RemoveOn
var methodTokenRemoveOn = 0;
// method token Fire
var methodTokenFire = 0;
var otherMethodTokens = new int[1024];
var otherMethodTokensCount = 0;
// Get the Event's properties.
var hresult = this.import.GetEventProps(
token,
ref typeDefToken,
eventName,
eventName.Length,
ref nameLength,
ref eventFlags,
ref eventTypeToken,
ref methodTokenAddOn,
ref methodTokenRemoveOn,
ref methodTokenFire,
otherMethodTokens,
1024,
ref otherMethodTokensCount);
if (hresult != 0)
{
Marshal.ThrowExceptionForHR(hresult);
}
// supress names "" & "\0";
if (nameLength <= 1)
{
// return null for this, we do not need to know about empty base
return null;
}
// Get the Event's name.
var fullTypeName = new string(eventName, 0, nameLength - 1);
var otherMethods = new Method[otherMethodTokensCount];
for (var otherMethodTokenIndex = 0; otherMethodTokenIndex < otherMethodTokensCount; otherMethodTokenIndex++)
{
otherMethods[otherMethodTokenIndex] = this.GetMethodProperties(otherMethodTokens[otherMethodTokenIndex]);
}
var eventProperties = new Event
{
Token = token,
FullName = fullTypeName,
Flags = (CorEventAttr)eventFlags,
Type =
eventTypeToken.Is(CorTokenType.TypeDef)
? (object)this.GetTypeDefinitionProperties(eventTypeToken)
: (object)this.GetTypeReferenceProperties(eventTypeToken),
AddOn = this.GetMethodProperties(methodTokenAddOn),
RemoveOn = this.GetMethodProperties(methodTokenRemoveOn),
Fire = methodTokenFire.IsNotEmpty(CorTokenType.MethodDef) ? this.GetMethodProperties(methodTokenFire) : null,
Other = otherMethods
};
return eventProperties;
}
/// <summary>
/// Enumerates ParamDef tokens representing Params of the specified type.
///
/// To enumerate inherited Params, the caller must explicitly walk the inheritance chain.
/// </summary>
/// <param name="method"> A ReturnTypeDefinition representing the type whose Params are to be enumerated</param>
/// <returns>the enumerator</returns>
public IEnumerable<Param> EnumerateParams(Method method)
{
// Handle of the enumeration.
var enumHandle = 0;
// We will read maximum 10 Params at once which will be stored in this array.
var @params = new int[10];
// Number of read Params.
var count = 0;
var hresult = this.import.EnumParams(ref enumHandle, method.Token, @params, @params.Length, ref count);
if (hresult != 0)
{
Marshal.ThrowExceptionForHR(hresult);
}
// Continue reading Params' while the Params array contains any new Param.
while (count > 0)
{
for (uint paramsIndex = 0; paramsIndex < count; paramsIndex++)
{
yield return this.GetParamProperties(@params[paramsIndex]);
}
hresult = this.import.EnumParams(ref enumHandle, method.Token, @params, @params.Length, ref count);
if (hresult != 0)
{
Marshal.ThrowExceptionForHR(hresult);
}
}
this.import.CloseEnum(enumHandle);
}
