[project @ 2001-03-08 13:33:23 by simonpj]

Add NameEnv!

diff --git a/ghc/compiler/basicTypes/NameEnv.lhs b/ghc/compiler/basicTypes/NameEnv.lhs
new file mode 100644 (file)
index 0000000..6872042
--- /dev/null
+++ b/ghc/compiler/basicTypes/NameEnv.lhs
@@ -0,0 +1,66 @@
+%
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
+%
+\section[NameEnv]{@NameEnv@: name environments}
+
+\begin{code}
+module NameEnv (
+       NameEnv, mkNameEnv,
+       emptyNameEnv, unitNameEnv, nameEnvElts, 
+       extendNameEnv_C, extendNameEnv, foldNameEnv, filterNameEnv,
+       plusNameEnv, plusNameEnv_C, extendNameEnv, extendNameEnvList,
+       lookupNameEnv, lookupNameEnv_NF, delFromNameEnv, elemNameEnv
+    ) where
+
+#include "HsVersions.h"
+
+import Name    ( Name )
+import UniqFM
+import Maybes  ( expectJust )
+\end{code}
+
+%************************************************************************
+%*                                                                     *
+\subsection{Name environment}
+%*                                                                     *
+%************************************************************************
+
+\begin{code}
+type NameEnv a = UniqFM a      -- Domain is Name
+
+emptyNameEnv            :: NameEnv a
+mkNameEnv       :: [(Name,a)] -> NameEnv a
+nameEnvElts             :: NameEnv a -> [a]
+extendNameEnv_C  :: (a->a->a) -> NameEnv a -> Name -> a -> NameEnv a
+extendNameEnv           :: NameEnv a -> Name -> a -> NameEnv a
+plusNameEnv             :: NameEnv a -> NameEnv a -> NameEnv a
+plusNameEnv_C           :: (a->a->a) -> NameEnv a -> NameEnv a -> NameEnv a
+extendNameEnvList:: NameEnv a -> [(Name,a)] -> NameEnv a
+delFromNameEnv          :: NameEnv a -> Name -> NameEnv a
+elemNameEnv             :: Name -> NameEnv a -> Bool
+unitNameEnv             :: Name -> a -> NameEnv a
+lookupNameEnv           :: NameEnv a -> Name -> Maybe a
+lookupNameEnv_NF :: NameEnv a -> Name -> a
+mapNameEnv      :: (a->b) -> NameEnv a -> NameEnv b
+foldNameEnv     :: (a -> b -> b) -> b -> NameEnv a -> b
+filterNameEnv   :: (elt -> Bool) -> NameEnv elt -> NameEnv elt
+
+emptyNameEnv            = emptyUFM
+foldNameEnv     = foldUFM
+mkNameEnv       = listToUFM
+nameEnvElts             = eltsUFM
+extendNameEnv_C  = addToUFM_C
+extendNameEnv           = addToUFM
+plusNameEnv             = plusUFM
+plusNameEnv_C           = plusUFM_C
+extendNameEnvList= addListToUFM
+delFromNameEnv          = delFromUFM
+elemNameEnv             = elemUFM
+mapNameEnv      = mapUFM
+unitNameEnv             = unitUFM
+filterNameEnv   = filterUFM
+
+lookupNameEnv                 = lookupUFM
+lookupNameEnv_NF env n = expectJust "lookupNameEnv_NF" (lookupUFM env n)
+\end{code}
+