Generalized A->B Translator based on a script

Does anyone know the best way to generate a language A-> language B
transformation based on a script which defines the transformation?


The script could be a (semi) formal way of representing the patterns
in, for example, Ada Records and the second family of patterns the
same data structures would represent in C structs or C++ classes. The
software tool would input the two sets of patterns and perfotransform
the tramsformation from C/C++ to Ada of from Ada to C++. There is a
need to be able to quickly compile legacy computer programs into
equivalently functioning programs in modern languages.


Thanks


Milt Benjamin
Lockheed Martin
[I suggested that the translation problem was hard enough, due to
subtle but important differences in the semantics of languages, that
it's usually not possible to translate completely
automatically. -John]
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