Haspara.Internal.Currency

This module provides internal definitions for modeling and working with currencies.

Data Definition

newtype Currency

Type encoding for currencies.

Constructors

MkCurrency

Fields

• currencyCode :: Text

Instances

Eq Currency

Defined in Haspara.Internal.Currency

Methods

(==) :: Currency -> Currency -> Bool

(/=) :: Currency -> Currency -> Bool

Ord Currency

Defined in Haspara.Internal.Currency

Methods

compare :: Currency -> Currency -> Ordering

(<) :: Currency -> Currency -> Bool

(<=) :: Currency -> Currency -> Bool

(>) :: Currency -> Currency -> Bool

(>=) :: Currency -> Currency -> Bool

max :: Currency -> Currency -> Currency

min :: Currency -> Currency -> Currency

Show Currency

Show instance for Currency.

>>> MkCurrency "USD"
USD

Defined in Haspara.Internal.Currency

Methods

showsPrec :: Int -> Currency -> ShowS

show :: Currency -> String

showList :: [Currency] -> ShowS

IsString Currency

IsString instance for Currency.

>>> "USD" :: Currency
USD

Defined in Haspara.Internal.Currency

Methods

fromString :: String -> Currency

Hashable Currency

Defined in Haspara.Internal.Currency

Methods

hashWithSalt :: Int -> Currency -> Int

hash :: Currency -> Int

ToJSON Currency

ToJSON instance for Currency.

>>> Aeson.encode (MkCurrency "USD")
"\"USD\""

Defined in Haspara.Internal.Currency

Methods

toJSON :: Currency -> Value

toEncoding :: Currency -> Encoding

toJSONList :: [Currency] -> Value

toEncodingList :: [Currency] -> Encoding

FromJSON Currency

FromJSON instance for Currency.

>>> Aeson.eitherDecode "\"\"" :: Either String Currency
Left "Error in $: Currency code error! Expecting at least 3 uppercase characters, but received: \"\""
>>> Aeson.eitherDecode "\"ABC\"" :: Either String Currency
Right ABC

Defined in Haspara.Internal.Currency

Methods

parseJSON :: Value -> Parser Currency

parseJSONList :: Value -> Parser [Currency]

Lift Currency

Defined in Haspara.Internal.Currency

Methods

lift :: Currency -> Q Exp

liftTyped :: Currency -> Q (TExp Currency)

Constructors

currency :: MonadError String m => Text -> m Currency

Smart constructor for Currency values within MonadError context.

>>> currency "" :: Either String Currency
Left "Currency code error! Expecting at least 3 uppercase characters, but received: \"\""
>>> currency " " :: Either String Currency
Left "Currency code error! Expecting at least 3 uppercase characters, but received: \" \""
>>> currency "AB" :: Either String Currency
Left "Currency code error! Expecting at least 3 uppercase characters, but received: \"AB\""
>>> currency " ABC " :: Either String Currency
Left "Currency code error! Expecting at least 3 uppercase characters, but received: \" ABC \""
>>> currency "ABC" :: Either String Currency
Right ABC

currencyFail :: MonadFail m => Text -> m Currency

Smart constructor for Currency values within MonadFail context.

>>> currencyFail "" :: Maybe Currency
Nothing
>>> currencyFail "US" :: Maybe Currency
Nothing
>>> currencyFail "usd" :: Maybe Currency
Nothing
>>> currencyFail "USD" :: Maybe Currency
Just USD

Auxiliaries

currencyCodeParser :: Parsec Void Text Text

Parser that parses currency codes.

>>> MP.runParser currencyCodeParser "Example" ""
Left (ParseErrorBundle {bundleErrors = TrivialError 0 (Just EndOfInput) (fromList []) :| [], bundlePosState = PosState {pstateInput = "", pstateOffset = 0, pstateSourcePos = SourcePos {sourceName = "Example", sourceLine = Pos 1, sourceColumn = Pos 1}, pstateTabWidth = Pos 8, pstateLinePrefix = ""}})
>>> MP.runParser currencyCodeParser "Example" " "
Left (ParseErrorBundle {bundleErrors = TrivialError 0 (Just (Tokens (' ' :| ""))) (fromList []) :| [], bundlePosState = PosState {pstateInput = " ", pstateOffset = 0, pstateSourcePos = SourcePos {sourceName = "Example", sourceLine = Pos 1, sourceColumn = Pos 1}, pstateTabWidth = Pos 8, pstateLinePrefix = ""}})
>>> MP.runParser currencyCodeParser "Example" "a"
Left (ParseErrorBundle {bundleErrors = TrivialError 0 (Just (Tokens ('a' :| ""))) (fromList []) :| [], bundlePosState = PosState {pstateInput = "a", pstateOffset = 0, pstateSourcePos = SourcePos {sourceName = "Example", sourceLine = Pos 1, sourceColumn = Pos 1}, pstateTabWidth = Pos 8, pstateLinePrefix = ""}})
>>> MP.runParser currencyCodeParser "Example" "A"
Left (ParseErrorBundle {bundleErrors = TrivialError 1 (Just EndOfInput) (fromList []) :| [], bundlePosState = PosState {pstateInput = "A", pstateOffset = 0, pstateSourcePos = SourcePos {sourceName = "Example", sourceLine = Pos 1, sourceColumn = Pos 1}, pstateTabWidth = Pos 8, pstateLinePrefix = ""}})
>>> MP.runParser currencyCodeParser "Example" "AB"
Left (ParseErrorBundle {bundleErrors = TrivialError 2 (Just EndOfInput) (fromList []) :| [], bundlePosState = PosState {pstateInput = "AB", pstateOffset = 0, pstateSourcePos = SourcePos {sourceName = "Example", sourceLine = Pos 1, sourceColumn = Pos 1}, pstateTabWidth = Pos 8, pstateLinePrefix = ""}})
>>> MP.runParser currencyCodeParser "Example" "ABC"
Right "ABC"

newtype CurrencyPair

Constructors

MkCurrencyPair

Fields

• unCurrencyPair :: (Currency, Currency)

Instances

Eq CurrencyPair

Defined in Haspara.Internal.Currency

Methods

(==) :: CurrencyPair -> CurrencyPair -> Bool

(/=) :: CurrencyPair -> CurrencyPair -> Bool

Ord CurrencyPair

Defined in Haspara.Internal.Currency

Methods

compare :: CurrencyPair -> CurrencyPair -> Ordering

(<) :: CurrencyPair -> CurrencyPair -> Bool

(<=) :: CurrencyPair -> CurrencyPair -> Bool

(>) :: CurrencyPair -> CurrencyPair -> Bool

(>=) :: CurrencyPair -> CurrencyPair -> Bool

max :: CurrencyPair -> CurrencyPair -> CurrencyPair

min :: CurrencyPair -> CurrencyPair -> CurrencyPair

Show CurrencyPair

Show instance for currency pairs.

>>> MkCurrencyPair ("EUR", "USD")
EUR/USD

Defined in Haspara.Internal.Currency

Methods

showsPrec :: Int -> CurrencyPair -> ShowS

show :: CurrencyPair -> String

showList :: [CurrencyPair] -> ShowS

Hashable CurrencyPair

Defined in Haspara.Internal.Currency

Methods

hashWithSalt :: Int -> CurrencyPair -> Int

hash :: CurrencyPair -> Int

Lift CurrencyPair

Defined in Haspara.Internal.Currency

Methods

lift :: CurrencyPair -> Q Exp

liftTyped :: CurrencyPair -> Q (TExp CurrencyPair)

toTuple :: CurrencyPair -> (Currency, Currency)

baseCurrency :: CurrencyPair -> Currency

quoteCurrency :: CurrencyPair -> Currency

currencyPair :: MonadError String m => Currency -> Currency -> m CurrencyPair

currencyPairFail :: MonadFail m => Currency -> Currency -> m CurrencyPair