Hi everyone,
I am working on a DSL embedded in Racket (for the curious, it's on
GitHub: https://github.com/khinsen/leibniz) and as I am starting to use
my DSL in practice, I wish my implementation had better error reporting.
My DSL consists of a bunch of syntax transformers that expand to Racket
code that constructs some complex data structure. The errors I care
about are not syntax errors, but inconsistencies detected during the
construction of the data structures. I would like those error messages
to refer to the source of the input language, rather than to the code of
the DSL implementation, which a DSL user shouldn't have to know about.
I can think of a few approaches, such as redefining
error-display-handler in the expanded code, but I suspect that others
have already found better solutions to this problem. I'd be grateful for
any pointers.
Konrad.
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