I would like to add my new language to Haskell using the Quasiquotes, but the language itself uses |] as a keyword.
Is there some way, how to:
a) Escape |], so it is passed to my language
b) Let the parser of my language decide, when the quasiquotation ends itself
Thanks.
Short answer: slightly modify the embedded language.
The User's Guide on QuasiQuoters explains that no escaping can done for the |]:
The quoted
⟨string⟩finishes at the first occurrence of the two-character sequence"|]". Absolutely no escaping is performed. If you want to embed that character sequence in the string, you must invent your own escape convention (such as, say, using the string"|~]"instead), and make your quoter function interpret"|~]"as"|]".
Your parser can not decide when the quasiquoters ends, because the substring is passed to the quasiquoter that started after the [quasiquoter|… part and before the …|] part.
You thus should slightly alter your language and thus for example work with a pre-processor that translate |~] (which is not considered the end of the quasiquoted string) to |] instead.
