#4168: Add StringPrimL to template-haskell
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Reporter: ekmett | Owner:
Type: feature request | Status: new
Priority: normal | Component: Compiler
Version: 6.12.3 | Keywords:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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In designing a template haskell lexer, you cannot get the same performance
as alex, due to the fact that you cannot encode a `"string"#` literal to
house the lookup tables for the encoded lexer.
Proposal: add `"string"#` literals to `template-haskell` as `StringPrimL`
(or another suitable constructor) to Lit.
Then the quasiquoter can emit a data type that contains `Addr#` references
to the link-time-locatable `"string"#`s permitting constant folding and
inlining away the particular link time choice of `Addr#`.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4168>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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