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by lispm
5718 days ago
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Usually these languages like Python are implemented on top of Lisp using a special parser. Of that there are many, from C, Python to special research languages. Then there are a lot of languages with lispy syntax. Typical examples were Prolog dialects with Lisp syntax (and optional Prolog syntax). The example that languages are embedded into a single s-expression (like in the LOOP macro) is also possible, but different. It would not make sense to use Python that way, since the low level syntax of Python is different from what Lisp s-expressions provide. For example s-expressions are not preserving any textual layout (indentation) when read - something that a language that uses indentation in its syntax would need, but would not get from being embedded in a single s-expression. |
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I came to conclusion that it is easier to do external DSL, not embedded. Parse source code on Pascal and then translate it into S-expressions. Am I right?
Btw, if I'm gonna write external DSL, I can do that in any language for example on Python. So, what's the difference?