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a major refactoring in the C and the Haskell runtimes. Note incompatible change in the PGF format!!!

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The following are the outcomes:

   - Predef.nonExist is fully supported by both the Haskell and the C runtimes

   - Predef.BIND is now an internal compiler defined token. For now
     it behaves just as usual for the Haskell runtime, i.e. it generates &+.
     However, the special treatment will let us to handle it properly in 
     the C runtime.

   - This required a major change in the PGF format since both 
     nonExist and BIND may appear inside 'pre' and this was not supported
     before.
This commit is contained in:
kr.angelov
2013-09-27 15:09:48 +00:00
parent b138899512
commit 426bc49a52
28 changed files with 330 additions and 371 deletions
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6
src/compiler/GF/Compile/PGFtoProlog.hs
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@@ -136,9 +136,9 @@ instance PLPrint Symbol where
plp (SymCat n l) = plOper ":" (show n) (show l)
plp (SymLit n l) = plTerm "lit" [show n, show l]
plp (SymVar n l) = plTerm "var" [show n, show l]
plp (SymKS ts) = prTList "," (map plAtom ts)
plp (SymKP ts alts) = plTerm "pre" [plList (map plAtom ts), plList (map plAlt alts)]
where plAlt (Alt ps ts) = plOper "/" (plList (map plAtom ps)) (plList (map plAtom ts))
plp (SymKS t) = plAtom t
plp (SymKP ts alts) = plTerm "pre" [plList (map plp ts), plList (map plAlt alts)]
where plAlt (ps,ts) = plOper "/" (plList (map plp ps)) (plList (map plAtom ts))
class PLPrint a where
plp :: a -> String