Re: recursive comments and Re: Techniques for writing an interpreter

Stefan Monnier <monnier+comp/compilers/news/@tequila.cs.yale.edu> writes:


| What languages allow recursive comments ?


Haskell does:


> {- this {- stuff {- is -} a -} nested comment -}
>
> -- a couple of strings:
> str1 = "-}"
> str2 = "--"


| What languages enforce a "lexing" of the content of comments (so that an
| end-comment inside a string inside a comment is ignored) ?


Haskell does not do this. Commenting out str1 above using {- ... -}
gives a compiler error. Details are in Sec. 2.2 of the Haskell
Report: http://www.haskell.org/onlinereport/lexemes.html


    Bjarte
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