GitHub/gf-core
1
0
Fork 1
mirror of https://github.com/GrammaticalFramework/gf-core.git synced 2026-04-22 19:22:50 -06:00
Code Issues Packages Projects Releases Wiki Activity

some work on evaluation with abstract expressions in PGF

Browse Source
This commit is contained in:
krasimir
2009-05-22 18:54:51 +00:00
parent f29bdd762e
commit f9c877eec6
32 changed files with 207 additions and 154 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/GF/Compile/Update.hs
View File

@@ -163,7 +163,7 @@ extendMod gr isCompl (name,cond) base old new = foldM try new $ Map.toList old
(b,n') = case info of
ResValue _ -> (True,n)
ResParam _ -> (True,n)
AbsFun _ Nothing -> (True,n)
AbsFun _ _ Nothing -> (True,n)
AnyInd b k -> (b,k)
_ -> (False,n) ---- canonical in Abs
@@ -171,8 +171,8 @@ unifyAnyInfo :: Ident -> Info -> Info -> Err Info
unifyAnyInfo m i j = case (i,j) of
(AbsCat mc1 mf1, AbsCat mc2 mf2) ->
liftM2 AbsCat (unifMaybe mc1 mc2) (unifConstrs mf1 mf2) -- adding constrs
(AbsFun mt1 md1, AbsFun mt2 md2) ->
liftM2 AbsFun (unifMaybe mt1 mt2) (unifAbsDefs md1 md2) -- adding defs
(AbsFun mt1 ma1 md1, AbsFun mt2 ma2 md2) ->
liftM3 AbsFun (unifMaybe mt1 mt2) (unifAbsArrity ma1 ma2) (unifAbsDefs md1 md2) -- adding defs
(ResParam mt1, ResParam mt2) -> liftM ResParam $ unifMaybe mt1 mt2
(ResValue mt1, ResValue mt2) ->
@@ -203,6 +203,14 @@ unifMaybe (Just p1) (Just p2)
| p1==p2 = return (Just p1)
| otherwise = fail ""
unifAbsArrity :: Maybe Int -> Maybe Int -> Err (Maybe Int)
unifAbsArrity Nothing Nothing = return Nothing
unifAbsArrity (Just a ) Nothing = return (Just a )
unifAbsArrity Nothing (Just a ) = return (Just a )
unifAbsArrity (Just a1) (Just a2)
| a1==a2 = return (Just a1)
| otherwise = fail ""
unifAbsDefs :: Maybe [Equation] -> Maybe [Equation] -> Err (Maybe [Equation])
unifAbsDefs Nothing Nothing = return Nothing
unifAbsDefs (Just _ ) Nothing = fail ""