public bool Define (TypeDefinition container, string method_full_name)
{
PendingImplementation pending = container.PendingImplementations;
MethodSpec ambig_iface_method;
bool optional = false;
if (pending != null) {
implementing = pending.IsInterfaceMethod (method.MethodName, member.InterfaceType, this, out ambig_iface_method, ref optional);
if (member.InterfaceType != null) {
if (implementing == null) {
if (member is PropertyBase) {
container.Compiler.Report.Error (550, method.Location,
"`{0}' is an accessor not found in interface member `{1}{2}'",
method.GetSignatureForError (), member.InterfaceType.GetSignatureForError (),
member.GetSignatureForError ().Substring (member.GetSignatureForError ().LastIndexOf ('.')));
} else {
container.Compiler.Report.Error (539, method.Location,
"`{0}.{1}' in explicit interface declaration is not a member of interface",
member.InterfaceType.GetSignatureForError (), member.ShortName);
}
return false;
}
if (implementing.IsAccessor && !method.IsAccessor) {
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Error (683, method.Location,
"`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
member.GetSignatureForError (), implementing.GetSignatureForError ());
return false;
}
} else {
if (implementing != null && !optional) {
if (!method.IsAccessor) {
if (implementing.IsAccessor) {
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Error (470, method.Location,
"Method `{0}' cannot implement interface accessor `{1}'",
method.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
}
} else if (implementing.DeclaringType.IsInterface) {
if (!implementing.IsAccessor) {
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Error (686, method.Location,
"Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
method.GetSignatureForError (), TypeManager.CSharpSignature (implementing), container.GetSignatureForError ());
} else {
PropertyBase.PropertyMethod pm = method as PropertyBase.PropertyMethod;
if (pm != null && pm.HasCustomAccessModifier && (pm.ModFlags & Modifiers.PUBLIC) == 0) {
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Error (277, method.Location,
"Accessor `{0}' must be declared public to implement interface member `{1}'",
method.GetSignatureForError (), implementing.GetSignatureForError ());
}
}
}
}
}
} else {
ambig_iface_method = null;
}
//
// For implicit implementations, make sure we are public, for
// explicit implementations, make sure we are private.
//
if (implementing != null){
if (member.IsExplicitImpl) {
if (method.ParameterInfo.HasParams && !implementing.Parameters.HasParams) {
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Error (466, method.Location,
"`{0}': the explicit interface implementation cannot introduce the params modifier",
method.GetSignatureForError ());
}
if (ambig_iface_method != null) {
container.Compiler.Report.SymbolRelatedToPreviousError (ambig_iface_method);
container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
container.Compiler.Report.Warning (473, 2, method.Location,
"Explicit interface implementation `{0}' matches more than one interface member. Consider using a non-explicit implementation instead",
method.GetSignatureForError ());
}
} else {
//
// Setting implementin to null inside this block will trigger a more
// verbose error reporting for missing interface implementations
//
if (implementing.DeclaringType.IsInterface) {
//
// If this is an interface method implementation,
// check for public accessibility
//
if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public) {
implementing = null;
} else if (optional && (container.Interfaces == null || !container.Definition.Interfaces.Contains (implementing.DeclaringType))) {
//
// We are not implementing interface when base class already implemented it
//
implementing = null;
}
} else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private) {
// We may never be private.
implementing = null;
} else if ((modifiers & Modifiers.OVERRIDE) == 0) {
//
// We may be protected if we're overriding something.
//
implementing = null;
}
}
//
// Static is not allowed
//
if ((modifiers & Modifiers.STATIC) != 0){
implementing = null;
}
}
//
// If implementing is still valid, set flags
//
if (implementing != null){
//
// When implementing interface methods, set NewSlot
// unless, we are overwriting a method.
//
if ((modifiers & Modifiers.OVERRIDE) == 0 && implementing.DeclaringType.IsInterface) {
flags |= MethodAttributes.NewSlot;
}
flags |= MethodAttributes.Virtual | MethodAttributes.HideBySig;
// Set Final unless we're virtual, abstract or already overriding a method.
if ((modifiers & (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE)) == 0)
flags |= MethodAttributes.Final;
//
// clear the pending implementation flag (requires explicit methods to be defined first)
//
pending.ImplementMethod (method.MethodName,
member.InterfaceType, this, member.IsExplicitImpl, out ambig_iface_method, ref optional);
//
// Update indexer accessor name to match implementing abstract accessor
//
if (!implementing.DeclaringType.IsInterface && !member.IsExplicitImpl && implementing.IsAccessor)
method_full_name = implementing.MemberDefinition.Name;
}
full_name = method_full_name;
declaring_type = container.Definition;
return true;
}