| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell98 |
Language.Egison.Variables
- printEnv :: Env -> IO String
- copyEnv :: Env -> IO Env
- extendEnv :: Env -> [(Var, ObjectRef)] -> IO Env
- makeLetRecFrame :: Env -> [(String, EgisonExpr)] -> IO FrameRef
- extendLetRec :: Env -> [(String, EgisonExpr)] -> IO Env
- findEnv :: Env -> Var -> IO (Maybe Env)
- isBound :: Env -> Var -> IO Bool
- isRecBound :: Env -> Var -> IO Bool
- getVarFromFrame :: Frame -> Var -> IOThrowsError ObjectRef
- getVar :: Env -> Var -> IOThrowsError ObjectRef
- defineVar :: Env -> Var -> ObjectRef -> IOThrowsError ()
Documentation
Show the contents of an environment
Create a copy of an environment
Arguments
| :: Env | Environment |
| -> [(Var, ObjectRef)] | Extensions to the environment |
| -> IO Env | Extended environment |
Extend given environment by binding a series of values to a new environment.
makeLetRecFrame :: Env -> [(String, EgisonExpr)] -> IO FrameRef Source
Arguments
| :: Env | Environment |
| -> [(String, EgisonExpr)] | Extensions to the environment |
| -> IO Env | Extended environment |
Extend given environment by binding a series of values to a new environment for letrec.
Arguments
| :: Env | Environment to begin the search; parent env's will be searched as well. |
| -> Var | Variable |
| -> IO (Maybe Env) | Environment, or Nothing if there was no match. |
Recursively search environments to find one that contains the given variable.
Determine if a variable is bound
Determine if a variable is bound or a parent of the given environment.
getVarFromFrame :: Frame -> Var -> IOThrowsError ObjectRef Source
Arguments
| :: Env | Environment |
| -> Var | Variable |
| -> IOThrowsError ObjectRef | Contents of the variable |
Retrieve the value of a variable defined