Compile Time D Expression Parser?

[d coder]

Greetings

I need to parse simple D expressions at compile time. I was wondering if
somebody on the list has some example code that could be of help to me.

I am working on an opensource constraint solver  and expressions that I
need to parse can be reasonably complex such as "x + y*n < 32 && x > 4". I
want to code a string mixin that parses such expressions and writes out
code that creates a parse tree for the given expression.

Thanks and Regards
- Puneet
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