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https://github.com/catseye/SixtyPical.git
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Lift block-level decls to top-level; still needs to rename them.
--HG-- rename : src/SixtyPical/Checker.hs => src/SixtyPical/Transformer.hs
This commit is contained in:
Cat's Eye Technologies
parent
aaec12d5e5
commit
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@ -3,6 +3,7 @@
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module SixtyPical.Checker where
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import SixtyPical.Model
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import SixtyPical.Transformer
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allTrue = foldl (&&) True
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@ -50,141 +51,6 @@ noUseOfUndeclaredRoutines p@(Program decls routines) =
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False -> error ("undeclared routine '" ++ routName ++ "'") -- acc + 1
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checkInstr other acc = acc
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-- -- -- -- -- --
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-- in the following "number" means "assign a unique ID to" and "loop"
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-- means "REPEAT or IF" (because i'm in such a good mood)
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numberProgramLoops :: Program -> Program
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numberProgramLoops (Program decls routines) =
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let
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(routines', _) = numberRoutinesLoops routines 0
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in
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(Program decls routines')
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numberRoutinesLoops :: [Routine] -> InternalID -> ([Routine], InternalID)
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numberRoutinesLoops [] iid = ([], iid)
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numberRoutinesLoops (routine:routines) iid =
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let
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(routine', iid') = numberRoutineLoops routine iid
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(routines', iid'') = numberRoutinesLoops routines iid'
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in
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((routine':routines'), iid'')
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numberRoutineLoops :: Routine -> InternalID -> (Routine, InternalID)
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numberRoutineLoops (Routine name outputs block) iid =
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let
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(block', iid') = numberBlockLoops block iid
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in
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((Routine name outputs block'), iid')
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numberBlockLoops :: Block -> InternalID -> (Block, InternalID)
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numberBlockLoops block iid =
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let
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(Block decls instrs) = block
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(instrs', iid') = numberInstrsLoops instrs iid
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block' = Block decls instrs'
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in
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(block', iid')
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numberInstrsLoops :: [Instruction] -> InternalID -> ([Instruction], InternalID)
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numberInstrsLoops [] iid = ([], iid)
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numberInstrsLoops (instr:instrs) iid =
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let
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(instr', iid') = numberInstruction instr iid
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(instrs', iid'') = numberInstrsLoops instrs iid'
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in
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((instr':instrs'), iid'')
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numberInstruction :: Instruction -> InternalID -> (Instruction, InternalID)
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numberInstruction (IF _ branch b1 b2) iid =
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let
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(b1', iid') = numberBlockLoops b1 iid
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(b2', iid'') = numberBlockLoops b2 iid'
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newIid = iid'' + 1
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newInstr = IF newIid branch b1' b2'
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in
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(newInstr, newIid)
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numberInstruction (REPEAT _ branch blk) iid =
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let
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(blk', iid') = numberBlockLoops blk iid
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newIid = iid' + 1
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newInstr = REPEAT newIid branch blk'
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in
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(newInstr, newIid)
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numberInstruction i iid = (i, iid)
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-- -- --
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fillOutNamedLocationTypes p@(Program decls routines) =
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mapProgramRoutines (xform) p
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where
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xform (COPY src dest) =
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typeMatch src dest (COPY)
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xform (CMP dest other) =
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typeMatch dest other (CMP)
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xform (ADD dest other) =
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typeMatch dest other (ADD)
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xform (AND dest other) =
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typeMatch dest other (AND)
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xform (SUB dest other) =
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typeMatch dest other (SUB)
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xform (OR dest other) =
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typeMatch dest other (OR)
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xform (JMPVECTOR dest) =
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case (resolve dest) of
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d@(NamedLocation (Just Vector) _) ->
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JMPVECTOR d
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_ ->
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error ("jmp to non-vector '" ++ (show dest) ++ "'")
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xform (IF iid branch b1 b2) =
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IF iid branch (mapBlock xform b1) (mapBlock xform b2)
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xform (REPEAT iid branch blk) =
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REPEAT iid branch (mapBlock xform blk)
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xform (DELTA dest val) =
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DELTA (resolve dest) val
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xform (WITH SEI blk) =
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WITH SEI (mapBlock xform blk)
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xform (WITH (PUSH val) blk) =
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WITH (PUSH (resolve val)) (mapBlock xform blk)
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xform (COPYROUTINE name dest) =
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COPYROUTINE name (resolve dest)
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xform other =
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other
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getType (NamedLocation (Just t) _) = t
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getType A = Byte
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getType X = Byte
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getType Y = Byte
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getType (Immediate x) =
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if x > 255 then Word else Byte
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getType _ = Byte
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typeMatch x y constructor =
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let
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rx = resolve x
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ry = resolve y
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typeRx = getType rx
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typeRy = getType ry
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in
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case (typeRx == typeRy, typeRx, typeRy) of
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(True, _, _) -> constructor rx ry
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(_, Byte, (ByteTable _)) -> constructor rx ry
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(_, (ByteTable _), Byte) -> constructor rx ry
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_ -> error ("incompatible types '" ++ (show typeRx) ++ "' and '" ++ (show typeRy) ++ "'")
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resolve (NamedLocation Nothing name) =
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case lookupDecl p name of
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Just decl ->
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(NamedLocation (Just $ getDeclLocationType decl) name)
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_ ->
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error ("undeclared location '" ++ name ++ "'")
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resolve (Indirect loc) =
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(Indirect (resolve loc))
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resolve (Indexed loc reg) =
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(Indexed (resolve loc) (resolve reg))
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resolve (IndirectIndexed loc reg) =
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(IndirectIndexed (resolve loc) (resolve reg))
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resolve other =
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other
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-- - - - - - -
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checkAndTransformProgram :: Program -> Maybe Program
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@ -198,7 +64,9 @@ checkAndTransformProgram program =
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then
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let
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program' = numberProgramLoops program
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program'' = fillOutNamedLocationTypes program'
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program'' = renameBlockDecls program'
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program''' = liftBlockDecls program'
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program'''' = fillOutNamedLocationTypes program'''
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in
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Just program''
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Just program''''
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else Nothing
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190
src/SixtyPical/Transformer.hs
Normal file
190
src/SixtyPical/Transformer.hs
Normal file
@ -0,0 +1,190 @@
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-- encoding: UTF-8
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module SixtyPical.Transformer (
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numberProgramLoops, fillOutNamedLocationTypes,
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renameBlockDecls, liftBlockDecls
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) where
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import SixtyPical.Model
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-- -- -- -- -- --
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-- in the following "number" means "assign a unique ID to" and "loop"
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-- means "REPEAT or IF" (because i'm in such a good mood)
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numberProgramLoops :: Program -> Program
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numberProgramLoops (Program decls routines) =
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let
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(routines', _) = numberRoutinesLoops routines 0
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in
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(Program decls routines')
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numberRoutinesLoops :: [Routine] -> InternalID -> ([Routine], InternalID)
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numberRoutinesLoops [] iid = ([], iid)
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numberRoutinesLoops (routine:routines) iid =
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let
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(routine', iid') = numberRoutineLoops routine iid
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(routines', iid'') = numberRoutinesLoops routines iid'
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in
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((routine':routines'), iid'')
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numberRoutineLoops :: Routine -> InternalID -> (Routine, InternalID)
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numberRoutineLoops (Routine name outputs block) iid =
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let
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(block', iid') = numberBlockLoops block iid
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in
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((Routine name outputs block'), iid')
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numberBlockLoops :: Block -> InternalID -> (Block, InternalID)
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numberBlockLoops block iid =
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let
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(Block decls instrs) = block
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(instrs', iid') = numberInstrsLoops instrs iid
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block' = Block decls instrs'
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in
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(block', iid')
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numberInstrsLoops :: [Instruction] -> InternalID -> ([Instruction], InternalID)
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numberInstrsLoops [] iid = ([], iid)
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numberInstrsLoops (instr:instrs) iid =
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let
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(instr', iid') = numberInstruction instr iid
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(instrs', iid'') = numberInstrsLoops instrs iid'
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in
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((instr':instrs'), iid'')
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numberInstruction :: Instruction -> InternalID -> (Instruction, InternalID)
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numberInstruction (IF _ branch b1 b2) iid =
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let
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(b1', iid') = numberBlockLoops b1 iid
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(b2', iid'') = numberBlockLoops b2 iid'
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newIid = iid'' + 1
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newInstr = IF newIid branch b1' b2'
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in
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(newInstr, newIid)
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numberInstruction (REPEAT _ branch blk) iid =
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let
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(blk', iid') = numberBlockLoops blk iid
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newIid = iid' + 1
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newInstr = REPEAT newIid branch blk'
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in
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(newInstr, newIid)
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numberInstruction i iid = (i, iid)
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-- -- --
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fillOutNamedLocationTypes p@(Program decls routines) =
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mapProgramRoutines (xform) p
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where
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xform (COPY src dest) =
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typeMatch src dest (COPY)
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xform (CMP dest other) =
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typeMatch dest other (CMP)
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xform (ADD dest other) =
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typeMatch dest other (ADD)
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xform (AND dest other) =
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typeMatch dest other (AND)
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xform (SUB dest other) =
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typeMatch dest other (SUB)
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xform (OR dest other) =
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typeMatch dest other (OR)
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xform (JMPVECTOR dest) =
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case (resolve dest) of
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d@(NamedLocation (Just Vector) _) ->
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JMPVECTOR d
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_ ->
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error ("jmp to non-vector '" ++ (show dest) ++ "'")
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xform (IF iid branch b1 b2) =
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IF iid branch (mapBlock xform b1) (mapBlock xform b2)
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xform (REPEAT iid branch blk) =
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REPEAT iid branch (mapBlock xform blk)
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xform (DELTA dest val) =
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DELTA (resolve dest) val
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xform (WITH SEI blk) =
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WITH SEI (mapBlock xform blk)
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xform (WITH (PUSH val) blk) =
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WITH (PUSH (resolve val)) (mapBlock xform blk)
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xform (COPYROUTINE name dest) =
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COPYROUTINE name (resolve dest)
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xform other =
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other
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getType (NamedLocation (Just t) _) = t
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getType A = Byte
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getType X = Byte
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getType Y = Byte
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getType (Immediate x) =
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if x > 255 then Word else Byte
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getType _ = Byte
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typeMatch x y constructor =
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let
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rx = resolve x
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ry = resolve y
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typeRx = getType rx
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typeRy = getType ry
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in
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case (typeRx == typeRy, typeRx, typeRy) of
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(True, _, _) -> constructor rx ry
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(_, Byte, (ByteTable _)) -> constructor rx ry
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(_, (ByteTable _), Byte) -> constructor rx ry
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_ -> error ("incompatible types '" ++ (show typeRx) ++ "' and '" ++ (show typeRy) ++ "'")
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resolve (NamedLocation Nothing name) =
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case lookupDecl p name of
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Just decl ->
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(NamedLocation (Just $ getDeclLocationType decl) name)
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_ ->
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error ("undeclared location '" ++ name ++ "'")
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resolve (Indirect loc) =
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(Indirect (resolve loc))
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resolve (Indexed loc reg) =
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(Indexed (resolve loc) (resolve reg))
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resolve (IndirectIndexed loc reg) =
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(IndirectIndexed (resolve loc) (resolve reg))
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resolve other =
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other
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-- -- -- -- --
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-- TODO: look at all blocks, not just routine's blocks
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renameBlockDecls (Program decls routines) =
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let
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routines' = map renameRoutineDecls routines
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in
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Program decls routines'
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where
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renameRoutineDecls (Routine name outputs block) =
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let
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(Block decls _) = block
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block' = foldDeclsRenaming decls block
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in
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(Routine name outputs block')
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-- TODO will have to return new decls too
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-- TODO will have to take accumulator too
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-- TODO accumulator has to range across all routines too!
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foldDeclsRenaming [] block = block
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foldDeclsRenaming ((Reserve name typ Nothing):decls) block =
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let
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newName = "_temp_1" -- TODO base this on accumulator
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block' = mapBlockNames name newName block
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in
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foldDeclsRenaming decls block'
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mapBlockNames n1 n2 (Block decls instrs) =
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(Block decls $ mapInstrsNames n1 n2 instrs)
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-- TODO: write this
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mapInstrsNames n1 n2 instrs = instrs
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-- -- -- --
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-- TODO: look at all blocks, not just routine's blocks
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liftBlockDecls (Program decls routines) =
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let
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liftedDecls = foldr getRoutinesBlockDecls [] routines
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in
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Program (decls ++ liftedDecls) routines
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where
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getRoutinesBlockDecls (Routine name outputs block) a =
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a ++ (getBlockDecls block)
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getBlockDecls (Block decls instrs) =
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decls
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