diff options
| -rw-r--r-- | src/Grasp/Interpreter.hs | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/src/Grasp/Interpreter.hs b/src/Grasp/Interpreter.hs index 03816f6..e84cfc5 100644 --- a/src/Grasp/Interpreter.hs +++ b/src/Grasp/Interpreter.hs @@ -47,7 +47,62 @@ garbageCollect g ips = - interpret :: GraspProgram -> [IP] -> IO () -interpret g ips = return () +interpret g ips = if (ips == []) then return () else execute g ips [] + + + +execute :: GraspProgram -> [IP] -> [IP] -> IO () +execute g [] out = interpret g (reverse out) +execute g ([]:ips) out = execute g ips out +execute g (cur:rest) out = + let (g', cur') = + case (snd . head $ cur) of + "set" -> setI g cur + "new" -> newI g cur + "del" -> delI g cur + "push" -> pushI g cur + "pop" -> popI g cur + "pick" -> pickI g cur + "call" -> callI g cur + "ret" -> retI g cur + "add" -> addI g cur + "mul" -> mulI g cur + "sub" -> subI g cur + "div" -> divI g cur + "mod" -> modI g cur + "getc" -> getcI g cur + "putc" -> putcI g cur + "gets" -> getsI g cur + "puts" -> puts g cur + + x | isInteger x -> implicitPushI g cur + + x -> error ("Unknown instruction at " ++ (show x)) + + in execute g' rest (cur':out) + + + +isInteger :: String -> Bool + +setI :: GraspProgram -> IP -> (GraspProgram, IP) +newI :: GraspProgram -> IP -> (GraspProgram, IP) +delI :: GraspProgram -> IP -> (GraspProgram, IP) +pushI :: GraspProgram -> IP -> (GraspProgram, IP) +popI :: GraspProgram -> IP -> (GraspProgram, IP) +pickI :: GraspProgram -> IP -> (GraspProgram, IP) +callI :: GraspProgram -> IP -> (GraspProgram, IP) +retI :: GraspProgram -> IP -> (GraspProgram, IP) +addI :: GraspProgram -> IP -> (GraspProgram, IP) +mulI :: GraspProgram -> IP -> (GraspProgram, IP) +subI :: GraspProgram -> IP -> (GraspProgram, IP) +divI :: GraspProgram -> IP -> (GraspProgram, IP) +modI :: GraspProgram -> IP -> (GraspProgram, IP) +getcI :: GraspProgram -> IP -> (GraspProgram, IP) +putcI :: GraspProgram -> IP -> (GraspProgram, IP) +getsI :: GraspProgram -> IP -> (GraspProgram, IP) +putsI :: GraspProgram -> IP -> (GraspProgram, IP) + +implicitPushI :: GraspProgram -> IP -> (GraspProgram, IP) |