public FunctionPointerType()
: base(null)
{
this.function = new MethodReference();
this.function.Name = "method";
this.etype = MD.ElementType.FnPtr;
}
internal MethodSpecification(MethodReference method)
{
if (method == null)
throw new ArgumentNullException("method");
this.method = method;
this.token = new MetadataToken(TokenType.MethodSpec);
}
MethodSpecification ImportMethodSpecification(MethodReference method, ImportGenericContext context)
{
if (!method.IsGenericInstance)
throw new NotSupportedException();
var instance = (GenericInstanceMethod)method;
var element_method = ImportMethod(instance.ElementMethod, context);
var imported_instance = new GenericInstanceMethod(element_method);
var arguments = instance.GenericArguments;
var imported_arguments = imported_instance.GenericArguments;
for (int i = 0; i < arguments.Count; i++)
imported_arguments.Add(ImportType(arguments[i], context));
return imported_instance;
}
public MethodReference ImportMethod(MethodReference method, ImportGenericContext context)
{
if (method.IsGenericInstance)
return ImportMethodSpecification(method, context);
var declaring_type = ImportType(method.DeclaringType, context);
var reference = new MethodReference
{
Name = method.Name,
HasThis = method.HasThis,
ExplicitThis = method.ExplicitThis,
DeclaringType = declaring_type,
CallingConvention = method.CallingConvention,
};
if (method.HasGenericParameters)
ImportGenericParameters(reference, method);
context.Push(reference);
try
{
reference.ReturnType = ImportType(method.ReturnType, context);
if (!method.HasParameters)
return reference;
var reference_parameters = reference.Parameters;
var parameters = method.Parameters;
for (int i = 0; i < parameters.Count; i++)
reference_parameters.Add(
new ParameterDefinition(ImportType(parameters[i].ParameterType, context)));
return reference;
}
finally
{
context.Pop();
}
}
public MethodReference ImportMethod(SR.MethodBase method, ImportGenericContext context, ImportGenericKind import_kind)
{
if (IsMethodSpecification(method) || ImportOpenGenericMethod(method, import_kind))
return ImportMethodSpecification(method, context);
var declaring_type = ImportType(method.DeclaringType, context);
if (IsGenericInstance(method.DeclaringType))
method = method.Module.ResolveMethod(method.MetadataToken);
var reference = new MethodReference
{
Name = method.Name,
HasThis = HasCallingConvention(method, SR.CallingConventions.HasThis),
ExplicitThis = HasCallingConvention(method, SR.CallingConventions.ExplicitThis),
DeclaringType = ImportType(method.DeclaringType, context, ImportGenericKind.Definition),
};
if (HasCallingConvention(method, SR.CallingConventions.VarArgs))
reference.CallingConvention &= MethodCallingConvention.VarArg;
if (method.IsGenericMethod)
ImportGenericParameters(reference, method.GetGenericArguments());
context.Push(reference);
try
{
var method_info = method as SR.MethodInfo;
reference.ReturnType = method_info != null
? ImportType(method_info.ReturnType, context)
: ImportType(typeof(void), default(ImportGenericContext));
var parameters = method.GetParameters();
var reference_parameters = reference.Parameters;
for (int i = 0; i < parameters.Length; i++)
reference_parameters.Add(
new ParameterDefinition(ImportType(parameters[i].ParameterType, context)));
reference.DeclaringType = declaring_type;
return reference;
}
finally
{
context.Pop();
}
}
public GenericInstanceMethod(MethodReference method)
: base(method)
{
}
internal CallSite()
{
this.signature = new MethodReference();
this.signature.token = new MetadataToken(TokenType.Signature, 0);
}
public static MethodDefinition GetMethod(Collection<MethodDefinition> methods, MethodReference reference)
{
for (int i = 0; i < methods.Count; i++)
{
var method = methods[i];
if (method.Name != reference.Name)
continue;
if (method.HasGenericParameters != reference.HasGenericParameters)
continue;
if (method.HasGenericParameters && method.GenericParameters.Count != reference.GenericParameters.Count)
continue;
if (!AreSame(method.ReturnType, reference.ReturnType))
continue;
if (method.HasParameters != reference.HasParameters)
continue;
if (!method.HasParameters && !reference.HasParameters)
return method;
if (!AreSame(method.Parameters, reference.Parameters))
continue;
return method;
}
return null;
}
MethodDefinition GetMethod(TypeDefinition type, MethodReference reference)
{
while (type != null)
{
var method = GetMethod(type.Methods, reference);
if (method != null)
return method;
if (type.BaseType == null)
return null;
type = Resolve(type.BaseType);
}
return null;
}
public virtual MethodDefinition Resolve(MethodReference method)
{
if (method == null)
throw new ArgumentNullException("method");
var type = Resolve(method.DeclaringType);
if (type == null)
return null;
method = method.GetElementMethod();
if (!type.HasMethods)
return null;
return GetMethod(type, method);
}
/// <summary>
/// Determines if two methods matches
/// </summary>
/// <param name="mref1">a method</param>
/// <param name="mref2">a method to compare</param>
/// <returns>true if matches</returns>
private static bool MethodMatches(MethodReference mref1, MethodReference mref2)
{
if ((mref1.Name != mref2.Name) || (mref1.Parameters.Count != mref2.Parameters.Count) ||
(mref1.ReturnType.FullName != mref2.ReturnType.FullName))
return false;
for (var i = 0; i <= mref1.Parameters.Count - 1; i++)
{
if (mref1.Parameters[i].ParameterType.FullName != mref2.Parameters[i].ParameterType.FullName)
return false;
}
return true;
}
private static MethodReference FixMethodImport(ModuleDefinition context, MethodDefinition source,
MethodDefinition target, MethodReference method)
{
if (method.DeclaringType.FullName == source.DeclaringType.FullName)
return FindMatchingMethod(target.DeclaringType, method);
return context.Import(method);
}
/// <summary>
/// Find a similar method in the given type definition
/// </summary>
/// <param name="tdef">Type definition</param>
/// <param name="mref">Method reference</param>
/// <returns>Method definition (or null if not found)</returns>
public static MethodDefinition FindMatchingMethod(TypeDefinition tdef, MethodReference mref)
{
return tdef.Methods.FirstOrDefault(mdef => MethodMatches(mdef, mref));
}
internal CustomAttribute(uint signature, MethodReference constructor)
{
this.signature = signature;
this.constructor = constructor;
this.resolved = false;
}
public CustomAttribute(MethodReference constructor, byte[] blob)
{
this.constructor = constructor;
this.resolved = false;
this.blob = blob;
}
public CustomAttribute(MethodReference constructor)
{
this.constructor = constructor;
this.resolved = true;
}