/// <summary>
/// C# allows this kind of scenarios:
/// interface I { void M (); }
/// class X { public void M (); }
/// class Y : X, I { }
///
/// For that case, we create an explicit implementation function
/// I.M in Y.
/// </summary>
void DefineProxy(TypeSpec iface, MethodSpec base_method, MethodSpec iface_method)
{
// TODO: Handle nested iface names
string proxy_name;
var ns = iface.MemberDefinition.Namespace;
if (string.IsNullOrEmpty(ns))
{
proxy_name = iface.MemberDefinition.Name + "." + iface_method.Name;
}
else
{
proxy_name = ns + "." + iface.MemberDefinition.Name + "." + iface_method.Name;
}
var param = iface_method.Parameters;
MethodBuilder proxy = container.TypeBuilder.DefineMethod(
proxy_name,
MethodAttributes.Private |
MethodAttributes.HideBySig |
MethodAttributes.NewSlot |
MethodAttributes.CheckAccessOnOverride |
MethodAttributes.Virtual | MethodAttributes.Final,
CallingConventions.Standard | CallingConventions.HasThis,
base_method.ReturnType.GetMetaInfo(), param.GetMetaInfo());
if (iface_method.IsGeneric)
{
var gnames = iface_method.GenericDefinition.TypeParameters.Select(l => l.Name).ToArray();
proxy.DefineGenericParameters(gnames);
}
for (int i = 0; i < param.Count; i++)
{
string name = param.FixedParameters [i].Name;
ParameterAttributes attr = ParametersCompiled.GetParameterAttribute(param.FixedParameters [i].ModFlags);
proxy.DefineParameter(i + 1, attr, name);
}
int top = param.Count;
var ec = new EmitContext(new ProxyMethodContext(container), proxy.GetILGenerator(), null);
ec.EmitThis();
// TODO: GetAllParametersArguments
for (int i = 0; i < top; i++)
{
ec.EmitArgumentLoad(i);
}
ec.Emit(OpCodes.Call, base_method);
ec.Emit(OpCodes.Ret);
container.TypeBuilder.DefineMethodOverride(proxy, (MethodInfo)iface_method.GetMetaInfo());
}
public void EmitAddressOf(EmitContext ec)
{
if ((ModFlags & Modifier.RefOutMask) != 0)
{
ec.EmitArgumentLoad(idx);
}
else
{
ec.EmitArgumentAddress(idx);
}
}
protected override void DoEmit(EmitContext ec)
{
for (int i = 0; i < fields.Length; ++i)
{
var field = fields[i];
if (field == null)
{
continue;
}
ec.EmitArgumentLoad(thisParameterIndex);
ec.EmitArgumentLoad(i);
if (parametersTypes[i] is ReferenceContainer)
{
ec.EmitLoadFromPtr(field.MemberType);
}
ec.Emit(OpCodes.Stfld, field);
}
}
/// <summary>
/// C# allows this kind of scenarios:
/// interface I { void M (); }
/// class X { public void M (); }
/// class Y : X, I { }
///
/// For that case, we create an explicit implementation function
/// I.M in Y.
/// </summary>
void DefineProxy (TypeSpec iface, MethodSpec base_method, MethodSpec iface_method)
{
// TODO: Handle nested iface names
string proxy_name;
var ns = iface.MemberDefinition.Namespace;
if (string.IsNullOrEmpty (ns))
proxy_name = iface.MemberDefinition.Name + "." + iface_method.Name;
else
proxy_name = ns + "." + iface.MemberDefinition.Name + "." + iface_method.Name;
var param = iface_method.Parameters;
MethodBuilder proxy = container.TypeBuilder.DefineMethod (
proxy_name,
MethodAttributes.Private |
MethodAttributes.HideBySig |
MethodAttributes.NewSlot |
MethodAttributes.CheckAccessOnOverride |
MethodAttributes.Virtual | MethodAttributes.Final,
CallingConventions.Standard | CallingConventions.HasThis,
base_method.ReturnType.GetMetaInfo (), param.GetMetaInfo ());
if (iface_method.IsGeneric) {
var gnames = iface_method.GenericDefinition.TypeParameters.Select (l => l.Name).ToArray ();
proxy.DefineGenericParameters (gnames);
}
for (int i = 0; i < param.Count; i++) {
string name = param.FixedParameters [i].Name;
ParameterAttributes attr = ParametersCompiled.GetParameterAttribute (param.FixedParameters [i].ModFlags);
proxy.DefineParameter (i + 1, attr, name);
}
int top = param.Count;
var ec = new EmitContext (new ProxyMethodContext (container), proxy.GetILGenerator (), null);
ec.EmitThis ();
// TODO: GetAllParametersArguments
for (int i = 0; i < top; i++)
ec.EmitArgumentLoad (i);
ec.Emit (OpCodes.Call, base_method);
ec.Emit (OpCodes.Ret);
container.TypeBuilder.DefineMethodOverride (proxy, (MethodInfo) iface_method.GetMetaInfo ());
}
public void EmitAddressOf (EmitContext ec)
{
if ((ModFlags & Modifier.RefOutMask) != 0) {
ec.EmitArgumentLoad (idx);
} else {
ec.EmitArgumentAddress (idx);
}
}
public void Emit (EmitContext ec)
{
ec.EmitArgumentLoad (idx);
}
public void Emit(EmitContext ec)
{
ec.EmitArgumentLoad(idx);
}