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a partial support for def rules in the C runtime

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The def rules are now compiled to byte code by the compiler and then to
native code by the JIT compiler in the runtime. Not all constructions
are implemented yet. The partial implementation is now in the repository
but it is not activated by default since this requires changes in the
PGF format. I will enable it only after it is complete.
This commit is contained in:
kr.angelov
2014-08-11 10:59:10 +00:00
parent 02dda1e66f
commit 584d589041
37 changed files with 707 additions and 455 deletions
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30
src/runtime/haskell/PGF/Expr.hs
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@@ -21,6 +21,7 @@ module PGF.Expr(Tree, BindType(..), Expr(..), Literal(..), Patt(..), Equation(..
import PGF.CId
import PGF.Type
import PGF.ByteCode
import Data.Char
--import Data.Maybe
@@ -324,21 +325,22 @@ data Value
| VClosure Env Expr
| VImplArg Value
type Sig = ( Map.Map CId (Type,Int,Maybe [Equation],Double,Int) -- type and def of a fun
, Int -> Maybe Expr -- lookup for metavariables
type Sig = ( Map.Map CId (Type,Int,Maybe ([Equation],[Instr]),Double) -- type and def of a fun
, Int -> Maybe Expr -- lookup for metavariables
)
type Env = [Value]
eval :: Sig -> Env -> Expr -> Value
eval sig env (EVar i) = env !! i
eval sig env (EFun f) = case Map.lookup f (fst sig) of
Just (_,a,meqs,_,_) -> case meqs of
Just eqs -> if a == 0
then case eqs of
Equ [] e : _ -> eval sig [] e
_ -> VConst f []
else VApp f []
Nothing -> VApp f []
Just (_,a,meqs,_) -> case meqs of
Just (eqs,_)
-> if a == 0
then case eqs of
Equ [] e : _ -> eval sig [] e
_ -> VConst f []
else VApp f []
Nothing -> VApp f []
Nothing -> error ("unknown function "++showCId f)
eval sig env (EApp e1 e2) = apply sig env e1 [eval sig env e2]
eval sig env (EAbs b x e) = VClosure env (EAbs b x e)
@@ -353,11 +355,11 @@ apply :: Sig -> Env -> Expr -> [Value] -> Value
apply sig env e [] = eval sig env e
apply sig env (EVar i) vs = applyValue sig (env !! i) vs
apply sig env (EFun f) vs = case Map.lookup f (fst sig) of
Just (_,a,meqs,_,_) -> case meqs of
Just eqs -> if a <= length vs
then match sig f eqs vs
else VApp f vs
Nothing -> VApp f vs
Just (_,a,meqs,_) -> case meqs of
Just (eqs,_) -> if a <= length vs
then match sig f eqs vs
else VApp f vs
Nothing -> VApp f vs
Nothing -> error ("unknown function "++showCId f)
apply sig env (EApp e1 e2) vs = apply sig env e1 (eval sig env e2 : vs)
apply sig env (EAbs b x e) (v:vs) = case (b,v) of