public MethodSpec CreateHoistedBaseCallProxy (ResolveContext rc, MethodSpec method)
{
Method proxy_method;
//
// One proxy per base method is enough
//
if (hoisted_base_call_proxies == null) {
hoisted_base_call_proxies = new Dictionary<MethodSpec, Method> ();
proxy_method = null;
} else {
hoisted_base_call_proxies.TryGetValue (method, out proxy_method);
}
if (proxy_method == null) {
string name = CompilerGeneratedClass.MakeName (method.Name, null, "BaseCallProxy", hoisted_base_call_proxies.Count);
var base_parameters = new Parameter[method.Parameters.Count];
for (int i = 0; i < base_parameters.Length; ++i) {
var base_param = method.Parameters.FixedParameters[i];
base_parameters[i] = new Parameter (new TypeExpression (method.Parameters.Types[i], Location),
base_param.Name, base_param.ModFlags, null, Location);
base_parameters[i].Resolve (this, i);
}
var cloned_params = ParametersCompiled.CreateFullyResolved (base_parameters, method.Parameters.Types);
if (method.Parameters.HasArglist) {
cloned_params.FixedParameters[0] = new Parameter (null, "__arglist", Parameter.Modifier.NONE, null, Location);
cloned_params.Types[0] = Module.PredefinedTypes.RuntimeArgumentHandle.Resolve (Location);
}
GenericMethod generic_method;
MemberName member_name;
if (method.IsGeneric) {
//
// Copy all base generic method type parameters info
//
var hoisted_tparams = method.GenericDefinition.TypeParameters;
var targs = new TypeArguments ();
var type_params = new TypeParameter[hoisted_tparams.Length];
for (int i = 0; i < type_params.Length; ++i) {
var tp = hoisted_tparams[i];
targs.Add (new TypeParameterName (tp.Name, null, Location));
type_params[i] = new TypeParameter (tp, null, null, new MemberName (tp.Name), null);
}
member_name = new MemberName (name, targs, Location);
generic_method = new GenericMethod (NamespaceEntry, this, member_name, type_params,
new TypeExpression (method.ReturnType, Location), cloned_params);
} else {
member_name = new MemberName (name);
generic_method = null;
}
// Compiler generated proxy
proxy_method = new Method (this, generic_method, new TypeExpression (method.ReturnType, Location),
Modifiers.PRIVATE | Modifiers.COMPILER_GENERATED | Modifiers.DEBUGGER_HIDDEN,
member_name, cloned_params, null);
var block = new ToplevelBlock (Compiler, proxy_method.ParameterInfo, Location);
var mg = MethodGroupExpr.CreatePredefined (method, method.DeclaringType, Location);
mg.InstanceExpression = new BaseThis (method.DeclaringType, Location);
// Get all the method parameters and pass them as arguments
var real_base_call = new Invocation (mg, block.GetAllParametersArguments ());
Statement statement;
if (method.ReturnType == TypeManager.void_type)
statement = new StatementExpression (real_base_call);
else
statement = new Return (real_base_call, Location);
block.AddStatement (statement);
proxy_method.Block = block;
methods.Add (proxy_method);
proxy_method.Define ();
hoisted_base_call_proxies.Add (method, proxy_method);
}
return proxy_method.Spec;
}