import UniqSupply ( UniqSupply )
import FastString ( FastString )
-import DATA_IOREF ( IORef, readIORef )
import StringBuffer ( StringBuffer )
import Maybes ( catMaybes, seqMaybe )
-import Time ( ClockTime )
+
+import System.Time ( ClockTime )
+import Data.IORef ( IORef, readIORef )
\end{code}
mi_mod_vers :: !Version, -- Module version: changes when anything changes
mi_orphan :: !WhetherHasOrphans, -- Whether this module has orphans
+ mi_finsts :: !WhetherHasFamInst, -- Whether module has family insts
mi_boot :: !IsBootInterface, -- Read from an hi-boot file?
mi_deps :: Dependencies,
mi_fam_insts :: [IfaceFamInst], -- Sorted
mi_rules :: [IfaceRule], -- Sorted
mi_rule_vers :: !Version, -- Version number for rules and
- -- instances combined
+ -- instances (for classes and families)
+ -- combined
-- Cached environments for easy lookup
-- These are computed (lazily) from other fields
= ModIface { mi_module = mod,
mi_mod_vers = initialVersion,
mi_orphan = False,
+ mi_finsts = False,
mi_boot = False,
mi_deps = noDependencies,
mi_usages = [],
ppr = pprAvail
pprAvail :: Outputable n => GenAvailInfo n -> SDoc
-pprAvail (AvailTC n ns) = ppr n <> case {- filter (/= n) -} ns of
- [] -> empty
- ns' -> braces (hsep (punctuate comma (map ppr ns')))
-
-pprAvail (Avail n) = ppr n
+pprAvail (Avail n) = ppr n
+pprAvail (AvailTC n ns) = ppr n <> braces (hsep (punctuate comma (map ppr ns)))
\end{code}
\begin{code}
-- * a transformation rule in a module other than the one defining
-- the function in the head of the rule.
+type WhetherHasFamInst = Bool -- This module defines family instances?
+
type IsBootInterface = Bool
-- Dependency info about modules and packages below this one
-- in the import hierarchy. See TcRnTypes.ImportAvails for details.
+-- The orphan modules in `dep_orphs' do *not* include family instance orphans,
+-- as they are anyway included in `dep_finsts'.
--
-- Invariant: the dependencies of a module M never includes M
-- Invariant: the lists are unordered, with no duplicates
data Dependencies
- = Deps { dep_mods :: [(ModuleName,IsBootInterface)], -- Home-package module dependencies
- dep_pkgs :: [PackageId], -- External package dependencies
- dep_orphs :: [Module] } -- Orphan modules (whether home or external pkg)
+ = Deps { dep_mods :: [(ModuleName, -- Home-package module dependencies
+ IsBootInterface)]
+ , dep_pkgs :: [PackageId] -- External package dependencies
+ , dep_orphs :: [Module] -- Orphan modules (whether home or
+ -- external pkg)
+ , dep_finsts :: [Module] -- Modules that contain family
+ -- instances (whether home or
+ -- external pkg)
+ }
deriving( Eq )
-- Equality used only for old/new comparison in MkIface.addVersionInfo
noDependencies :: Dependencies
-noDependencies = Deps [] [] []
+noDependencies = Deps [] [] [] []
data Usage
= Usage { usg_name :: ModuleName, -- Name of the module