Safe Haskell	None
Language	Haskell2010

Language.Haskell.HLint

Description

WARNING: This module represents the old version of the HLint API. It will be deleted in favour of Language.Haskell.HLint3 in the next major version.

This module provides a library interface to HLint, strongly modelled on the command line interface.

Synopsis

hlint :: [String] -> IO [Suggestion]
data Suggestion
suggestionLocation :: Suggestion -> SrcLoc
suggestionSeverity :: Suggestion -> Severity
data Severity
- = Ignore
- | Suggestion
- | Warning
- | Error

Documentation

hlint :: [String] -> IO [Suggestion] Source #

This function takes a list of command line arguments, and returns the given suggestions. To see a list of arguments type hlint --help at the console. This function writes to the stdout/stderr streams, unless --quiet is specified.

As an example:

do hints <- hlint ["src", "--ignore=Use map","--quiet"]
   when (length hints > 3) $ error "Too many hints!"

data Suggestion Source #

A suggestion - the Show instance is of particular use.

Instances

Eq Suggestion Source #
Instance details Defined in Language.Haskell.HLint Methods (==) :: Suggestion -> Suggestion -> Bool Source # (/=) :: Suggestion -> Suggestion -> Bool Source #
Ord Suggestion Source #
Instance details Defined in Language.Haskell.HLint Methods compare :: Suggestion -> Suggestion -> Ordering Source # (<) :: Suggestion -> Suggestion -> Bool Source # (<=) :: Suggestion -> Suggestion -> Bool Source # (>) :: Suggestion -> Suggestion -> Bool Source # (>=) :: Suggestion -> Suggestion -> Bool Source # max :: Suggestion -> Suggestion -> Suggestion Source # min :: Suggestion -> Suggestion -> Suggestion Source #
Show Suggestion Source #
Instance details Defined in Language.Haskell.HLint Methods showsPrec :: Int -> Suggestion -> ShowS Source # show :: Suggestion -> String Source # showList :: [Suggestion] -> ShowS Source #

suggestionLocation :: Suggestion -> SrcLoc Source #

From a suggestion, extract the file location it refers to.

suggestionSeverity :: Suggestion -> Severity Source #

From a suggestion, determine how severe it is.

data Severity Source #

How severe an issue is.

Constructors

Ignore	The issue has been explicitly ignored and will usually be hidden (pass `--show` on the command line to see ignored ideas).
Suggestion	Suggestions are things that some people may consider improvements, but some may not.
Warning	Warnings are suggestions that are nearly always a good idea to apply.
Error	Available as a setting for the user.

Instances

Bounded Severity Source #
Instance details Defined in Config.Type Methods minBound :: Severity Source # maxBound :: Severity Source #
Enum Severity Source #
Instance details Defined in Config.Type Methods succ :: Severity -> Severity Source # pred :: Severity -> Severity Source # toEnum :: Int -> Severity Source # fromEnum :: Severity -> Int Source # enumFrom :: Severity -> [Severity] Source # enumFromThen :: Severity -> Severity -> [Severity] Source # enumFromTo :: Severity -> Severity -> [Severity] Source # enumFromThenTo :: Severity -> Severity -> Severity -> [Severity] Source #
Eq Severity Source #
Instance details Defined in Config.Type Methods (==) :: Severity -> Severity -> Bool Source # (/=) :: Severity -> Severity -> Bool Source #
Ord Severity Source #
Instance details Defined in Config.Type Methods compare :: Severity -> Severity -> Ordering Source # (<) :: Severity -> Severity -> Bool Source # (<=) :: Severity -> Severity -> Bool Source # (>) :: Severity -> Severity -> Bool Source # (>=) :: Severity -> Severity -> Bool Source # max :: Severity -> Severity -> Severity Source # min :: Severity -> Severity -> Severity Source #
Read Severity Source #
Instance details Defined in Config.Type Methods readsPrec :: Int -> ReadS Severity Source # readList :: ReadS [Severity] Source # readPrec :: ReadPrec Severity Source # readListPrec :: ReadPrec [Severity] Source #
Show Severity Source #
Instance details Defined in Config.Type Methods showsPrec :: Int -> Severity -> ShowS Source # show :: Severity -> String Source # showList :: [Severity] -> ShowS Source #