Safe Haskell	None
Language	Haskell2010

Text.Libyaml

Contents

The event stream
Encoding and decoding
Error handling

Description

Low-level, streaming YAML interface. For a higher-level interface, see Data.Yaml.

Synopsis

data MarkedEvent = MarkedEvent {
- yamlEvent :: Event
- yamlStartMark :: YamlMark
- yamlEndMark :: YamlMark
}
data Event
- = EventStreamStart
- | EventStreamEnd
- | EventDocumentStart
- | EventDocumentEnd
- | EventAlias !AnchorName
- | EventScalar !ByteString !Tag !Style !Anchor
- | EventSequenceStart !Tag !SequenceStyle !Anchor
- | EventSequenceEnd
- | EventMappingStart !Tag !MappingStyle !Anchor
- | EventMappingEnd
data Style
- = Any
- | Plain
- | SingleQuoted
- | DoubleQuoted
- | Literal
- | Folded
- | PlainNoTag
data SequenceStyle
- = AnySequence
- | BlockSequence
- | FlowSequence
data MappingStyle
- = AnyMapping
- | BlockMapping
- | FlowMapping
data Tag
- = StrTag
- | FloatTag
- | NullTag
- | BoolTag
- | SetTag
- | IntTag
- | SeqTag
- | MapTag
- | UriTag String
- | NoTag
type AnchorName = String
type Anchor = Maybe AnchorName
encode :: MonadResource m => ConduitM Event o m ByteString
encodeWith :: MonadResource m => FormatOptions -> ConduitM Event o m ByteString
decode :: MonadResource m => ByteString -> ConduitM i Event m ()
decodeMarked :: MonadResource m => ByteString -> ConduitM i MarkedEvent m ()
encodeFile :: MonadResource m => FilePath -> ConduitM Event o m ()
decodeFile :: MonadResource m => FilePath -> ConduitM i Event m ()
decodeFileMarked :: MonadResource m => FilePath -> ConduitM i MarkedEvent m ()
encodeFileWith :: MonadResource m => FormatOptions -> FilePath -> ConduitM Event o m ()
data FormatOptions
defaultFormatOptions :: FormatOptions
setWidth :: Maybe Int -> FormatOptions -> FormatOptions
setTagRendering :: (Event -> TagRender) -> FormatOptions -> FormatOptions
renderScalarTags :: Event -> TagRender
renderAllTags :: Event -> TagRender
renderNoTags :: Event -> TagRender
renderUriTags :: Event -> TagRender
data YamlException
- = YamlException String
- | YamlParseException {
  - yamlProblem :: String
  - yamlContext :: String
  - yamlProblemMark :: YamlMark
  }
data YamlMark = YamlMark {
- yamlIndex :: Int
- yamlLine :: Int
- yamlColumn :: Int
}

The event stream

data MarkedEvent Source #

Event with start and end marks.

Since: 0.10.4.0

Constructors

MarkedEvent
Fields yamlEvent :: Event yamlStartMark :: YamlMark yamlEndMark :: YamlMark

data Event Source #

Instances

Eq Event Source #
Instance details Defined in Text.Libyaml Methods (==) :: Event -> Event -> Bool # (/=) :: Event -> Event -> Bool #
Show Event Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Event -> ShowS # show :: Event -> String # showList :: [Event] -> ShowS #

data Style Source #

Style for scalars - e.g. quoted / folded

Constructors

Any
Plain
SingleQuoted
DoubleQuoted
Literal
Folded
PlainNoTag

Instances

Bounded Style Source #
Instance details Defined in Text.Libyaml Methods minBound :: Style # maxBound :: Style #
Enum Style Source #
Instance details Defined in Text.Libyaml Methods succ :: Style -> Style # pred :: Style -> Style # toEnum :: Int -> Style # fromEnum :: Style -> Int # enumFrom :: Style -> [Style] # enumFromThen :: Style -> Style -> [Style] # enumFromTo :: Style -> Style -> [Style] # enumFromThenTo :: Style -> Style -> Style -> [Style] #
Eq Style Source #
Instance details Defined in Text.Libyaml Methods (==) :: Style -> Style -> Bool # (/=) :: Style -> Style -> Bool #
Data Style Source #
Instance details Defined in Text.Libyaml Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Style -> c Style # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Style # toConstr :: Style -> Constr # dataTypeOf :: Style -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Style) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Style) # gmapT :: (forall b. Data b => b -> b) -> Style -> Style # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Style -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Style -> r # gmapQ :: (forall d. Data d => d -> u) -> Style -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Style -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Style -> m Style # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Style -> m Style # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Style -> m Style #
Ord Style Source #
Instance details Defined in Text.Libyaml Methods compare :: Style -> Style -> Ordering # (<) :: Style -> Style -> Bool # (<=) :: Style -> Style -> Bool # (>) :: Style -> Style -> Bool # (>=) :: Style -> Style -> Bool # max :: Style -> Style -> Style # min :: Style -> Style -> Style #
Read Style Source #
Instance details Defined in Text.Libyaml Methods readsPrec :: Int -> ReadS Style # readList :: ReadS [Style] # readPrec :: ReadPrec Style # readListPrec :: ReadPrec [Style] #
Show Style Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Style -> ShowS # show :: Style -> String # showList :: [Style] -> ShowS #

data SequenceStyle Source #

Style for sequences - e.g. block or flow

Since: 0.9.0

Constructors

AnySequence
BlockSequence
FlowSequence

Instances

Bounded SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods minBound :: SequenceStyle # maxBound :: SequenceStyle #
Enum SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods succ :: SequenceStyle -> SequenceStyle # pred :: SequenceStyle -> SequenceStyle # toEnum :: Int -> SequenceStyle # fromEnum :: SequenceStyle -> Int # enumFrom :: SequenceStyle -> [SequenceStyle] # enumFromThen :: SequenceStyle -> SequenceStyle -> [SequenceStyle] # enumFromTo :: SequenceStyle -> SequenceStyle -> [SequenceStyle] # enumFromThenTo :: SequenceStyle -> SequenceStyle -> SequenceStyle -> [SequenceStyle] #
Eq SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods (==) :: SequenceStyle -> SequenceStyle -> Bool # (/=) :: SequenceStyle -> SequenceStyle -> Bool #
Data SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SequenceStyle -> c SequenceStyle # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SequenceStyle # toConstr :: SequenceStyle -> Constr # dataTypeOf :: SequenceStyle -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SequenceStyle) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SequenceStyle) # gmapT :: (forall b. Data b => b -> b) -> SequenceStyle -> SequenceStyle # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SequenceStyle -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SequenceStyle -> r # gmapQ :: (forall d. Data d => d -> u) -> SequenceStyle -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> SequenceStyle -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> SequenceStyle -> m SequenceStyle # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SequenceStyle -> m SequenceStyle # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SequenceStyle -> m SequenceStyle #
Ord SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods compare :: SequenceStyle -> SequenceStyle -> Ordering # (<) :: SequenceStyle -> SequenceStyle -> Bool # (<=) :: SequenceStyle -> SequenceStyle -> Bool # (>) :: SequenceStyle -> SequenceStyle -> Bool # (>=) :: SequenceStyle -> SequenceStyle -> Bool # max :: SequenceStyle -> SequenceStyle -> SequenceStyle # min :: SequenceStyle -> SequenceStyle -> SequenceStyle #
Show SequenceStyle Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> SequenceStyle -> ShowS # show :: SequenceStyle -> String # showList :: [SequenceStyle] -> ShowS #

data MappingStyle Source #

Style for mappings - e.g. block or flow

Since: 0.9.0

Constructors

AnyMapping
BlockMapping
FlowMapping

Instances

Bounded MappingStyle Source #
Instance details Defined in Text.Libyaml Methods minBound :: MappingStyle # maxBound :: MappingStyle #
Enum MappingStyle Source #
Instance details Defined in Text.Libyaml Methods succ :: MappingStyle -> MappingStyle # pred :: MappingStyle -> MappingStyle # toEnum :: Int -> MappingStyle # fromEnum :: MappingStyle -> Int # enumFrom :: MappingStyle -> [MappingStyle] # enumFromThen :: MappingStyle -> MappingStyle -> [MappingStyle] # enumFromTo :: MappingStyle -> MappingStyle -> [MappingStyle] # enumFromThenTo :: MappingStyle -> MappingStyle -> MappingStyle -> [MappingStyle] #
Eq MappingStyle Source #
Instance details Defined in Text.Libyaml Methods (==) :: MappingStyle -> MappingStyle -> Bool # (/=) :: MappingStyle -> MappingStyle -> Bool #
Data MappingStyle Source #
Instance details Defined in Text.Libyaml Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> MappingStyle -> c MappingStyle # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c MappingStyle # toConstr :: MappingStyle -> Constr # dataTypeOf :: MappingStyle -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c MappingStyle) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c MappingStyle) # gmapT :: (forall b. Data b => b -> b) -> MappingStyle -> MappingStyle # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> MappingStyle -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> MappingStyle -> r # gmapQ :: (forall d. Data d => d -> u) -> MappingStyle -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> MappingStyle -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> MappingStyle -> m MappingStyle # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> MappingStyle -> m MappingStyle # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> MappingStyle -> m MappingStyle #
Ord MappingStyle Source #
Instance details Defined in Text.Libyaml Methods compare :: MappingStyle -> MappingStyle -> Ordering # (<) :: MappingStyle -> MappingStyle -> Bool # (<=) :: MappingStyle -> MappingStyle -> Bool # (>) :: MappingStyle -> MappingStyle -> Bool # (>=) :: MappingStyle -> MappingStyle -> Bool # max :: MappingStyle -> MappingStyle -> MappingStyle # min :: MappingStyle -> MappingStyle -> MappingStyle #
Show MappingStyle Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> MappingStyle -> ShowS # show :: MappingStyle -> String # showList :: [MappingStyle] -> ShowS #

data Tag Source #

Constructors

StrTag
FloatTag
NullTag
BoolTag
SetTag
IntTag
SeqTag
MapTag
UriTag String
NoTag

Instances

Eq Tag Source #
Instance details Defined in Text.Libyaml Methods (==) :: Tag -> Tag -> Bool # (/=) :: Tag -> Tag -> Bool #
Data Tag Source #
Instance details Defined in Text.Libyaml Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Tag -> c Tag # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Tag # toConstr :: Tag -> Constr # dataTypeOf :: Tag -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Tag) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Tag) # gmapT :: (forall b. Data b => b -> b) -> Tag -> Tag # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Tag -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Tag -> r # gmapQ :: (forall d. Data d => d -> u) -> Tag -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Tag -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Tag -> m Tag # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Tag -> m Tag # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Tag -> m Tag #
Read Tag Source #
Instance details Defined in Text.Libyaml Methods readsPrec :: Int -> ReadS Tag # readList :: ReadS [Tag] # readPrec :: ReadPrec Tag # readListPrec :: ReadPrec [Tag] #
Show Tag Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Tag -> ShowS # show :: Tag -> String # showList :: [Tag] -> ShowS #

type AnchorName = String Source #

type Anchor = Maybe AnchorName Source #

Encoding and decoding

encode :: MonadResource m => ConduitM Event o m ByteString Source #

encodeWith :: MonadResource m => FormatOptions -> ConduitM Event o m ByteString Source #

Since: 0.10.2.0

decode :: MonadResource m => ByteString -> ConduitM i Event m () Source #

Create a conduit that yields events from a bytestring.

decodeMarked :: MonadResource m => ByteString -> ConduitM i MarkedEvent m () Source #

Create a conduit that yields marked events from a bytestring.

This conduit will yield identical events to that of "decode", but also includes start and end marks for each event.

Since: 0.10.4.0

encodeFile :: MonadResource m => FilePath -> ConduitM Event o m () Source #

decodeFile :: MonadResource m => FilePath -> ConduitM i Event m () Source #

Creata a conduit that yields events from a file.

decodeFileMarked :: MonadResource m => FilePath -> ConduitM i MarkedEvent m () Source #

Create a conduit that yields marked events from a file.

This conduit will yield identical events to that of "decodeFile", but also includes start and end marks for each event.

Since: 0.10.4.0

encodeFileWith :: MonadResource m => FormatOptions -> FilePath -> ConduitM Event o m () Source #

Since: 0.10.2.0

data FormatOptions Source #

Contains options relating to the formatting (indendation, width) of the YAML output.

Since: 0.10.2.0

defaultFormatOptions :: FormatOptions Source #

Since: 0.10.2.0

setWidth :: Maybe Int -> FormatOptions -> FormatOptions Source #

Set the maximum number of columns in the YAML output, or Nothing for infinite. By default, the limit is 80 characters.

Since: 0.10.2.0

setTagRendering :: (Event -> TagRender) -> FormatOptions -> FormatOptions Source #

Control when and whether tags are rendered to output.

Since: 0.1.1.0

renderScalarTags :: Event -> TagRender Source #

A value for formatOptionsRenderTags that renders no collection tags but all scalar tags (unless suppressed with styles 'NoTag or PlainNoTag).

Since: 0.1.1.0

renderAllTags :: Event -> TagRender Source #

A value for formatOptionsRenderTags that renders all tags (except NoTag tag and PlainNoTag style).

Since: 0.1.1.0

renderNoTags :: Event -> TagRender Source #

A value for formatOptionsRenderTags that renders no tags.

Since: 0.1.1.0

renderUriTags :: Event -> TagRender Source #

A value for formatOptionsRenderCollectionTags that renders tags which are instances of UriTag

Since: 0.1.1.0

Error handling

data YamlException Source #

Constructors

YamlException String
YamlParseException	problem, context, index, position line, position column
Fields yamlProblem :: String yamlContext :: String yamlProblemMark :: YamlMark

Instances

Show YamlException Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> YamlException -> ShowS # show :: YamlException -> String # showList :: [YamlException] -> ShowS #
Exception YamlException Source #
Instance details Defined in Text.Libyaml Methods toException :: YamlException -> SomeException # fromException :: SomeException -> Maybe YamlException # displayException :: YamlException -> String #

data YamlMark Source #

The pointer position

Constructors

YamlMark
Fields yamlIndex :: Int yamlLine :: Int yamlColumn :: Int

Instances

Show YamlMark Source #
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> YamlMark -> ShowS # show :: YamlMark -> String # showList :: [YamlMark] -> ShowS #

EventStreamStart
EventStreamEnd
EventDocumentStart
EventDocumentEnd
EventAlias !AnchorName
EventScalar !ByteString !Tag !Style !Anchor
EventSequenceStart !Tag !SequenceStyle !Anchor
EventSequenceEnd
EventMappingStart !Tag !MappingStyle !Anchor
EventMappingEnd