Hhp.Ghc

The Happy Haskell Programming library. API for interactive processes

Converting the Ghc monad to the IO monad

withGHC

Arguments

:: FilePath

A target file displayed in an error message.

-> Ghc a

Ghc actions created by the Ghc utilities.

-> IO a

Converting the Ghc monad to the IO monad.

withGHC' :: Ghc a -> IO a

Initializing DynFlags

initializeFlagsWithCradle :: Options -> Cradle -> Ghc ()

Initialize the DynFlags relating to the compilation of a single file or GHC session according to the Cradle and Options provided.

Ghc utilities

boot :: Options -> Ghc String

Printing necessary information for front-end booting.

browse

Arguments

:: Options

-> ModuleString

A module name. (e.g. "Data.List")

-> Ghc String

Getting functions, classes, etc from a module. If detailed is True, their types are also obtained. If operators is True, operators are also returned.

check

Arguments

:: Options

-> [FilePath]

The target files.

-> Ghc (Either String String)

Checking syntax of a target file using GHC. Warnings and errors are returned.

info

Arguments

:: Options

-> FilePath

A target file.

-> Expression

A Haskell expression.

-> Ghc String

Obtaining information of a target expression. (GHCi's info:)

types

Arguments

:: Options

-> FilePath

A target file.

-> Int

Line number.

-> Int

Column number.

-> Ghc String

Obtaining type of a target expression. (GHCi's type:)

modules :: Options -> Ghc String

Listing installed modules.

SymMdlDb

type Symbol = String

Type of key for SymMdlDb.

data SymMdlDb

Database from Symbol to modules.

getSymMdlDb :: Ghc SymMdlDb

Creating SymMdlDb.

lookupSym :: Options -> Symbol -> SymMdlDb -> String

Looking up SymMdlDb with Symbol to find modules.

Misc

getSystemLibDir :: IO (Maybe FilePath)

Obtaining the directory for system libraries.