Moduleghc-9.14.1GHC2021

GHC.Unit.Finder.Types

6 types

Packageghc-9.14.1
Exports6
LanguageGHC2021
LicenceBSD-3-Clause
SourceTypes.hs

datadata FinderCache

Constructors

FinderCache
- flushFinderCaches :: UnitEnv -> IO ()
  remove all the home modules from the cache; package modules are assumed to not move around during a session; also flush the file hash cache.
- addToFinderCache :: InstalledModule -> InstalledFindResult -> IO ()
  Add a found location to the cache for the module.
- lookupFinderCache :: InstalledModule -> IO (Maybe InstalledFindResult)
  Look for a location in the cache.
- lookupFileCache :: FilePath -> IO Fingerprint
  Look for the hash of a file in the cache. This should add it to the cache. If the file doesn't exist, raise an IOException.

typetype FinderCacheState = InstalledModuleEnv InstalledFindResult

The FinderCache maps modules to the result of searching for that module. It records the results of searching for modules along the search path. On :load, we flush the entire contents of this cache.

typetype FileCacheState = Map FilePath Fingerprint

datadata FindResult

The result of searching for an imported module.

NB: FindResult manages both user source-import lookups (which can result in Module) as well as direct imports for interfaces (which always result in InstalledModule).

Constructors

Found ModLocation Module
The module was found
NoPackage Unit
The requested unit was not found
FoundMultiple [(Module, ModuleOrigin)]
_Error_: both in multiple packages
NotFound
Not found
- fr_paths :: [FilePath]
  Places where I looked
- fr_pkg :: Maybe Unit
  Just p => module is in this unit's manifest, but couldn't find the .hi file
- fr_mods_hidden :: [Unit]
  Module is in these units, but the *module* is hidden
- fr_pkgs_hidden :: [Unit]
  Module is in these units, but the *unit* is hidden
- fr_unusables :: [UnusableUnit]
  Module is in these units, but it is unusable
- fr_suggestions :: [ModuleSuggestion]
  Possible mis-spelled modules

datadata InstalledFindResult

Constructors

InstalledFound ModLocation
InstalledNoPackage UnitId
InstalledNotFound [OsPath] (Maybe UnitId)

datadata FinderOpts

Locations and information the finder cares about.

Should be taken from DynFlags via initFinderOpts.

Constructors

FinderOpts
- finder_importPaths :: [OsPath]
  Where are we allowed to look for Modules and Source files
- finder_lookupHomeInterfaces :: Bool
  When looking up a home module:
  - True: search interface files (e.g. in '-c' mode)
  - False: search source files (e.g. in '--make' mode)
- finder_bypassHiFileCheck :: Bool
  Don't check that an imported interface file actually exists if it can only be at one location. The interface will be reported as InstalledFound even if the file doesn't exist, so this is only useful in specific cases (e.g. to generate dependencies with `ghc -M`)
- finder_ways :: Ways
- finder_enableSuggestions :: Bool
  If we encounter unknown modules, should we suggest modules that have a similar name.
- finder_workingDirectory :: Maybe OsPath
- finder_thisPackageName :: Maybe FastString
- finder_hiddenModules :: Set ModuleName
- finder_reexportedModules :: Map ModuleName ModuleName
- finder_hieDir :: Maybe OsPath
- finder_hieSuf :: OsString
- finder_hiDir :: Maybe OsPath
- finder_hiSuf :: OsString
- finder_dynHiSuf :: OsString
- finder_objectDir :: Maybe OsPath
- finder_objectSuf :: OsString
- finder_dynObjectSuf :: OsString
- finder_stubDir :: Maybe OsPath