Zuse
(After Konrad Zuse) A descendant of Ada,
Modula-2, Mesa and Oberon-1, described by Christian
Collberg in his PhD thesis 1991.
Zuse supports several levels of information hiding. The Zuse
type system includes fully hidden types (similar to Modula-2
opaque types but without any implementation restriction),
semi-open pointer types (same as Modula-2 opaque types),
extensible record types (similar to Oberon-1 public
projection types but without the compiler hint), enumeration
types, extensible enumeration types, and extensible subrange
types.
A type can also be protected by specifying the operations that
particular modules may perform (similar to C++ friend
classes and Ada private types). Zuse also includes
hidden and extensible constants and hidden inline procedures.
In order to support the higher levels of information hiding
the implementation employs partial intermediate code linking.
A version for Sun-3 is available.
(1999-02-18)
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