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Use LCLR algorithm for eliminating left-recursion, with lambda terms in SISR for getting trees right.

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bringert
2006-12-20 20:10:15 +00:00
parent 5b8680b8fd
commit cb70ffadaa
14 changed files with 541 additions and 308 deletions
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2
src/GF/Speech/CFGToFiniteState.hs
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@@ -76,7 +76,7 @@ makeRegular g = groupProds $ concatMap trSet (mutRecCats True g)
| otherwise = concatMap handleCat csl
where csl = Set.toList cs
rs = catSetRules g cs
handleCat c = [CFRule c' [] (mkName (c++"-empty"))] -- introduce A' -> e
handleCat c = [CFRule c' [] (mkCFTerm (c++"-empty"))] -- introduce A' -> e
++ concatMap (makeRightLinearRules c) (catRules g c)
where c' = newCat c
makeRightLinearRules b' (CFRule c ss n) =