Method Resolution Clause

You can override the default name-based mappings by including method resolution clauses in a class declaration. When a class implements two or more interfaces that have identically named methods, use method resolution clauses to resolve the naming conflicts.

A method resolution clause has the form procedure interface.interfaceMethod = implementingMethod;

or function interface.interfaceMethod = implementingMethod;

where implementingMethod is a method declared in the class or one of its ancestors. The implementingMethod can be a method declared later in the class declaration, but cannot be a private method of an ancestor class declared in another module.

For example, the class declaration type

TMemoryManager = class(TInterfacedObject, IMalloc, IErrorInfo) function IMalloc.Alloc = Allocate; procedure IMalloc.Free = Deallocate;

end;

maps IMalloc's Alloc and Free methods onto TMemoryManager's Allocate and Deallocate methods.

A method resolution clause cannot alter a mapping introduced by an ancestor class.

Project Management Made Easy

Project Management Made Easy

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