Cabal-3.10.1.0: A framework for packaging Haskell software

Copyright | Ian Lynagh 2007
License | BSD3
Maintainer | cabal-devel@haskell.org
Portability | portable
Safe Haskell | Safe-Inferred
Language | Haskell2010

Distribution.Verbosity

Contents

- Verbosity
- Call stacks
- Output markets
- Line wrapping
- Time stamps
- Stderr
- No warnings

Description

A `Verbosity` type with associated utilities.

There are 4 standard verbosity levels from `silent`, `normal`, `verbose` up to `deafening`. This is used for deciding what logging messages to print.

Verbosity also is equipped with some internal settings which can be used to control at a fine granularity the verbosity of specific settings (e.g., so that you can trace only particular things you are interested in.) It's important to note that the instances for `Verbosity` assume that this does not exist.

Synopsis

- data Verbosity
- silent :: Verbosity
- normal :: Verbosity
- verbose :: Verbosity
- deafening :: Verbosity
- moreVerbose :: Verbosity -> Verbosity
- lessVerbose :: Verbosity -> Verbosity
- isVerboseQuiet :: Verbosity -> Bool
- intToVerbosity :: Int -> Maybe Verbosity
- flagToVerbosity :: ReadE Verbosity
- showForCabal :: Verbosity -> String
- showForGHC :: Verbosity -> String
- verboseNoFlags :: Verbosity -> Verbosity
- verboseHasFlags :: Verbosity -> Bool
- modifyVerbosity :: (Verbosity -> Verbosity) -> Verbosity -> Verbosity
- verboseCallSite :: Verbosity -> Verbosity
- verboseCallStack :: Verbosity -> Verbosity
- isVerboseCallSite :: Verbosity -> Bool
- isVerboseCallStack :: Verbosity -> Bool
- verboseMarkOutput :: Verbosity -> Verbosity
- isVerboseMarkOutput :: Verbosity -> Bool
- verboseUnmarkOutput :: Verbosity -> Verbosity
- verboseNoWrap :: Verbosity -> Verbosity
- isVerboseNoWrap :: Verbosity -> Bool
- verboseTimestamp :: Verbosity -> Verbosity
- isVerboseTimestamp :: Verbosity -> Bool
- verboseNoTimestamp :: Verbosity -> Verbosity
- verboseStderr :: Verbosity -> Verbosity
- isVerboseStderr :: Verbosity -> Bool
- verboseNoStderr :: Verbosity -> Verbosity
- verboseNoWarn :: Verbosity -> Verbosity
- isVerboseNoWarn :: Verbosity -> Bool

# Verbosity

data Verbosity Source #

#### Instances

Instances details

Parsec Verbosity Source #

Parser verbosity

    >>> explicitEitherParsec parsecVerbosity "normal"
    Right (Verbosity {vLevel = Normal, vFlags = fromList [], vQuiet = False})

    >>> explicitEitherParsec parsecVerbosity "normal+nowrap  "
    Right (Verbosity {vLevel = Normal, vFlags = fromList [VNoWrap], vQuiet = False})

    >>> explicitEitherParsec parsecVerbosity "normal+nowrap +markoutput"
    Right (Verbosity {vLevel = Normal, vFlags = fromList [VNoWrap,VMarkOutput], vQuiet = False})

    >>> explicitEitherParsec parsecVerbosity "normal +nowrap +markoutput"
    Right (Verbosity {vLevel = Normal, vFlags = fromList [VNoWrap,VMarkOutput], vQuiet = False})

    >>> explicitEitherParsec parsecVerbosity "normal+nowrap+markoutput"
    Right (Verbosity {vLevel = Normal, vFlags = fromList [VNoWrap,VMarkOutput], vQuiet = False})

    >>> explicitEitherParsec parsecVerbosity "deafening+nowrap+stdout+stderr+callsite+callstack"
    Right (Verbosity {vLevel = Deafening, vFlags = fromList [VCallStack,VCallSite,VNoWrap,VStderr], vQuiet = False})

Note: this parser will eat trailing spaces.

Instance details Defined in Distribution.Verbosity Methods parsec :: CabalParsing m => m Verbosity Source #
Pretty Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods pretty :: Verbosity -> Doc Source # prettyVersioned :: CabalSpecVersion -> Verbosity -> Doc Source #
Structured Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods structure :: Proxy Verbosity -> Structure Source # structureHash' :: Tagged Verbosity MD5
Bounded Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods minBound :: Verbosity Source # maxBound :: Verbosity Source #
Enum Verbosity Source # |

Instance details

Defined in Distribution.Verbosity

Methods

succ :: Verbosity -> Verbosity Source #

pred :: Verbosity -> Verbosity Source #

toEnum :: Int -> Verbosity Source #

fromEnum :: Verbosity -> Int Source #

enumFrom :: Verbosity -> [Verbosity] Source #

enumFromThen :: Verbosity -> Verbosity -> [Verbosity] Source #

enumFromTo :: Verbosity -> Verbosity -> [Verbosity] Source #

enumFromThenTo :: Verbosity -> Verbosity -> Verbosity -> [Verbosity] Source #

Generic Verbosity Source # |
Instance details Defined in Distribution.Verbosity Associated Types type Rep Verbosity :: Type -> Type Source # Methods from :: Verbosity -> Rep Verbosity x Source # to :: Rep Verbosity x -> Verbosity Source #
Read Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods readsPrec :: Int -> ReadS Verbosity Source # readList :: ReadS [Verbosity] Source # readPrec :: ReadPrec Verbosity Source # readListPrec :: ReadPrec [Verbosity] Source #
Show Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods showsPrec :: Int -> Verbosity -> ShowS Source # show :: Verbosity -> String Source # showList :: [Verbosity] -> ShowS Source #
Binary Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods put :: Verbosity -> Put # get :: Get Verbosity # putList :: [Verbosity] -> Put #
Eq Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods (==) :: Verbosity -> Verbosity -> Bool # (/=) :: Verbosity -> Verbosity -> Bool #
Ord Verbosity Source # |
Instance details Defined in Distribution.Verbosity Methods compare :: Verbosity -> Verbosity -> Ordering # (<) :: Verbosity -> Verbosity -> Bool # (<=) :: Verbosity -> Verbosity -> Bool # (>) :: Verbosity -> Verbosity -> Bool # (>=) :: Verbosity -> Verbosity -> Bool # max :: Verbosity -> Verbosity -> Verbosity # min :: Verbosity -> Verbosity -> Verbosity #
type Rep Verbosity Source # |

Instance details

Defined in Distribution.Verbosity

type Rep Verbosity = D1 ('MetaData "Verbosity" "Distribution.Verbosity" "Cabal-3.10.1.0" 'False) (C1 ('MetaCons "Verbosity" 'PrefixI 'True) (S1 ('MetaSel ('Just "vLevel") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 VerbosityLevel) :*: (S1 ('MetaSel ('Just "vFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Set VerbosityFlag)) :*: S1 ('MetaSel ('Just "vQuiet") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))

silent :: Verbosity Source #

In `silent` mode, we should not print anything unless an error occurs.

normal :: Verbosity Source #

Print stuff we want to see by default.

verbose :: Verbosity Source #

Be more verbose about what's going on.

deafening :: Verbosity Source #

Not only are we verbose ourselves (perhaps even noisier than when being `verbose`), but we tell everything we run to be verbose too.

moreVerbose :: Verbosity -> Verbosity Source #

Increase verbosity level, but stay `silent` if we are.

lessVerbose :: Verbosity -> Verbosity Source #

Decrease verbosity level, but stay `deafening` if we are.

isVerboseQuiet :: Verbosity -> Bool Source #

Test if we had called `lessVerbose` on the verbosity.

intToVerbosity :: Int -> Maybe Verbosity Source #

Numeric verbosity level `0..3`: `0` is `silent`, `3` is `deafening`.

flagToVerbosity :: ReadE Verbosity Source #

showForCabal :: Verbosity -> String Source #

showForGHC :: Verbosity -> String Source #

verboseNoFlags :: Verbosity -> Verbosity Source #

Turn off all flags.

verboseHasFlags :: Verbosity -> Bool Source #

modifyVerbosity :: (Verbosity -> Verbosity) -> Verbosity -> Verbosity Source #

Combinator for transforming verbosity level while retaining the original hidden state.

For instance, the following property holds

    isVerboseNoWrap (modifyVerbosity (max verbose) v) == isVerboseNoWrap v

Note: you can use `modifyVerbosity (const v1) v0` to overwrite `v1`'s flags with `v0`'s flags.

Since: Cabal-2.0.1.0

# Call stacks

verboseCallSite :: Verbosity -> Verbosity Source #

Turn on verbose call-site printing when we log.

verboseCallStack :: Verbosity -> Verbosity Source #

Turn on verbose call-stack printing when we log.

isVerboseCallSite :: Verbosity -> Bool Source #

Test if we should output call sites when we log.

isVerboseCallStack :: Verbosity -> Bool Source #

Test if we should output call stacks when we log.

# Output markets

verboseMarkOutput :: Verbosity -> Verbosity Source #

Turn on `-----BEGIN CABAL OUTPUT-----` markers for output from Cabal (as opposed to GHC, or system dependent).

isVerboseMarkOutput :: Verbosity -> Bool Source #

Test if we should output markets.

verboseUnmarkOutput :: Verbosity -> Verbosity Source #

Turn off marking; useful for suppressing nondeterministic output.

# Line wrapping

verboseNoWrap :: Verbosity -> Verbosity Source #

Disable line-wrapping for log messages.

isVerboseNoWrap :: Verbosity -> Bool Source #

Test if line-wrapping is disabled for log messages.

# Time stamps

verboseTimestamp :: Verbosity -> Verbosity Source #

Turn on timestamps for log messages.

isVerboseTimestamp :: Verbosity -> Bool Source #

Test if we should output timestamps when we log.

verboseNoTimestamp :: Verbosity -> Verbosity Source #

Turn off timestamps for log messages.

# Stderr

verboseStderr :: Verbosity -> Verbosity Source #

Switch logging to `stderr`.

Since: Cabal-3.4.0.0

isVerboseStderr :: Verbosity -> Bool Source #

Test if we should output to `stderr` when we log.

Since: Cabal-3.4.0.0

verboseNoStderr :: Verbosity -> Verbosity Source #

Switch logging to `stdout`.

Since: Cabal-3.4.0.0

# No warnings

verboseNoWarn :: Verbosity -> Verbosity Source #

Turn off warnings for log messages.

isVerboseNoWarn :: Verbosity -> Bool Source #

Test if we should output warnings when we log.