Abstract: A method and system for interfacing to type libraries are provided. In a preferred embodiment, the present invention defines an interface to a type library. The interface has a plurality of interface methods through which type information can be stored in and retrieved from the type library. A plurality of implementations of the defined interface are provided. A computer program is compiled using the defined interfaces to access the type information. When the compiled computer program is executed, it accesses the type information using one of the plurality of implementations. In a preferred embodiment, a type library contains type information to allow a compiler to bind to an instance of type at compile type (early binding).

Abstract: A compiler and compiling method minimizes recompilation of a computer program after an edit. The program is organized in plural program units, such as modules. The units are each compiled through a sequence of compilation states, including plural intermediate compilation states. In compiling each of the program units, dependencies between units are recorded in a table. When an edit to a program unit is later attempted, the edited unit is decompiled to one of various intermediate compilation states according to the edit performed. Units dependent of the edited unit are decompiled to one of various intermediate compilation states according to the dependency of the dependent unit on the edited unit. When next compiling the program, the units are compiled from their respective intermediate compilation state. Units also can be saved in various intermediate compilation states to minimize compiling when the program is again loaded.