Hledger.Data.Amount

A simple Amount is some quantity of money, shares, or anything else. It has a (possibly null) CommoditySymbol and a numeric quantity:

  $1
  £-50
  EUR 3.44
  GOOG 500
  1.5h
  90 apples
  0

It may also have an assigned Price, representing this amount's per-unit or total cost in a different commodity. If present, this is rendered like so:

  EUR 2 @ $1.50  (unit price)
  EUR 2 @@ $3   (total price)

A MixedAmount is zero or more simple amounts, so can represent multiple commodities; this is the type most often used:

  0
  $50 + EUR 3
  16h + $13.55 + AAPL 500 + 6 oranges

A mixed amount is always "normalised", it has no more than one amount in each commodity and price. When calling amounts it will have no zero amounts, or just a single zero amount and no other amounts.

Limited arithmetic with simple and mixed amounts is supported, best used with similar amounts since it mostly ignores assigned prices and commodity exchange rates.

Commodity

showCommoditySymbol :: Text -> Text

Show space-containing commodity symbols quoted, as they are in a journal.

isNonsimpleCommodityChar :: Char -> Bool

quoteCommoditySymbolIfNeeded :: Text -> Text

Amount

nullamt :: Amount

The empty simple amount.

missingamt :: Amount

A temporary value for parsed transactions which had no amount specified.

num :: Quantity -> Amount

usd :: DecimalRaw Integer -> Amount

eur :: DecimalRaw Integer -> Amount

gbp :: DecimalRaw Integer -> Amount

per :: Quantity -> Amount

hrs :: Quantity -> Amount

at :: Amount -> Amount -> Amount

(@@) :: Amount -> Amount -> Amount

amountWithCommodity :: CommoditySymbol -> Amount -> Amount

Convert an amount to the specified commodity, ignoring and discarding any assigned prices and assuming an exchange rate of 1.

arithmetic

amountCost :: Amount -> Amount

Convert a amount to its "cost" or "selling price" in another commodity, using its attached transaction price if it has one. Notes:

• price amounts must be MixedAmounts with exactly one component Amount (or there will be a runtime error XXX)
• price amounts should be positive in the Journal (though this is currently not enforced)

amountIsZero :: Amount -> Bool

Is this Amount (and its total price, if it has one) exactly zero, ignoring its display precision ?

amountLooksZero :: Amount -> Bool

Do this Amount and (and its total price, if it has one) appear to be zero when rendered with its display precision ?

divideAmount :: Quantity -> Amount -> Amount

Divide an amount's quantity (and its total price, if it has one) by a constant.

multiplyAmount :: Quantity -> Amount -> Amount

Multiply an amount's quantity (and its total price, if it has one) by a constant.

rendering

data AmountDisplayOpts

Options for the display of Amount and MixedAmount.

Constructors

AmountDisplayOpts

Fields

• displayPrice :: Bool

  Whether to display the Price of an Amount.

• displayZeroCommodity :: Bool

  If the Amount rounds to 0, whether to display its commodity string.

• displayThousandsSep :: Bool

  Whether to display thousands separators.

• displayColour :: Bool

  Whether to colourise negative Amounts.

• displayOneLine :: Bool

  Whether to display on one line.

• displayMinWidth :: Maybe Int

  Minimum width to pad to

• displayMaxWidth :: Maybe Int

  Maximum width to clip to | Display amounts in this order (without the commodity symbol) and display a 0 in case a corresponding commodity does not exist

• displayOrder :: Maybe [CommoditySymbol]

Instances

Show AmountDisplayOpts

Defined in Hledger.Data.Amount

Methods

showsPrec :: Int -> AmountDisplayOpts -> ShowS

show :: AmountDisplayOpts -> String

showList :: [AmountDisplayOpts] -> ShowS

Default AmountDisplayOpts

Display Amount and MixedAmount with no colour.

Defined in Hledger.Data.Amount

Methods

def :: AmountDisplayOpts

noColour :: AmountDisplayOpts

Display Amount and MixedAmount with no colour.

noPrice :: AmountDisplayOpts

Display Amount and MixedAmount with no prices.

oneLine :: AmountDisplayOpts

Display Amount and MixedAmount on one line with no prices.

csvDisplay :: AmountDisplayOpts

Display Amount and MixedAmount in a form suitable for CSV output.

amountstyle :: AmountStyle

Default amount style

styleAmount :: Map CommoditySymbol AmountStyle -> Amount -> Amount

Given a map of standard commodity display styles, apply the appropriate one to this amount. If there's no standard style for this amount's commodity, return the amount unchanged. Also apply the style to the price (except for precision)

styleAmountExceptPrecision :: Map CommoditySymbol AmountStyle -> Amount -> Amount

Like styleAmount, but keep the number of decimal places unchanged.

amountUnstyled :: Amount -> Amount

Reset this amount's display style to the default.

showAmountB :: AmountDisplayOpts -> Amount -> WideBuilder

General function to generate a WideBuilder for an Amount, according the supplied AmountDisplayOpts. The special "missing" amount is displayed as the empty string. This is the main function to use for showing Amounts, constructing a builder; it can then be converted to a Text with wbToText, or to a String with wbUnpack.

showAmount :: Amount -> String

Get the string representation of an amount, based on its commodity's display settings. String representations equivalent to zero are converted to just "0". The special "missing" amount is displayed as the empty string.

showAmount = wbUnpack . showAmountB noColour

showAmountPrice :: Amount -> WideBuilder

cshowAmount :: Amount -> String

Colour version. For a negative amount, adds ANSI codes to change the colour, currently to hard-coded red.

cshowAmount = wbUnpack . showAmountB def{displayColour=True}

showAmountWithZeroCommodity :: Amount -> String

Like showAmount, but show a zero amount's commodity if it has one.

showAmountWithZeroCommodity = wbUnpack . showAmountB noColour{displayZeryCommodity=True}

showAmountDebug :: Amount -> String

Get a string representation of an amount for debugging, appropriate to the current debug level. 9 shows maximum detail.

showAmountWithoutPrice :: Amount -> String

Get the string representation of an amount, without any @ price.

showAmountWithoutPrice = wbUnpack . showAmountB noPrice

amountSetPrecision :: AmountPrecision -> Amount -> Amount

Set an amount's display precision.

withPrecision :: Amount -> AmountPrecision -> Amount

Set an amount's display precision, flipped.

amountSetFullPrecision :: Amount -> Amount

Increase an amount's display precision, if needed, to enough decimal places to show it exactly (showing all significant decimal digits, excluding trailing zeros).

setAmountInternalPrecision :: Word8 -> Amount -> Amount

Set an amount's internal precision, ie rounds the Decimal representing the amount's quantity to some number of decimal places. Rounding is done with Data.Decimal's default roundTo function: "If the value ends in 5 then it is rounded to the nearest even value (Banker's Rounding)". Does not change the amount's display precision. Intended mainly for internal use, eg when comparing amounts in tests.

withInternalPrecision :: Amount -> Word8 -> Amount

Set an amount's internal precision, flipped. Intended mainly for internal use, eg when comparing amounts in tests.

setAmountDecimalPoint :: Maybe Char -> Amount -> Amount

Set (or clear) an amount's display decimal point.

withDecimalPoint :: Amount -> Maybe Char -> Amount

Set (or clear) an amount's display decimal point, flipped.

amountStripPrices :: Amount -> Amount

Strip all prices from an Amount

canonicaliseAmount :: Map CommoditySymbol AmountStyle -> Amount -> Amount

Canonicalise an amount's display style using the provided commodity style map.

MixedAmount

nullmixedamt :: MixedAmount

The empty mixed amount.

missingmixedamt :: MixedAmount

A temporary value for parsed transactions which had no amount specified.

isMissingMixedAmount :: MixedAmount -> Bool

Whether a MixedAmount has a missing amount

mixed :: Foldable t => t Amount -> MixedAmount

Convert amounts in various commodities into a mixed amount.

mixedAmount :: Amount -> MixedAmount

Create a MixedAmount from a single Amount.

maAddAmount :: MixedAmount -> Amount -> MixedAmount

Add an Amount to a MixedAmount, normalising the result. Amounts with different costs are kept separate.

maAddAmounts :: Foldable t => MixedAmount -> t Amount -> MixedAmount

Add a collection of Amounts to a MixedAmount, normalising the result. Amounts with different costs are kept separate.

amounts :: MixedAmount -> [Amount]

Get a mixed amount's component amounts.

• amounts in the same commodity are combined unless they have different prices or total prices
• multiple zero amounts, all with the same non-null commodity, are replaced by just the last of them, preserving the commodity and amount style (all but the last zero amount are discarded)
• multiple zero amounts with multiple commodities, or no commodities, are replaced by one commodity-less zero amount
• an empty amount list is replaced by one commodity-less zero amount
• the special "missing" mixed amount remains unchanged

amountsRaw :: MixedAmount -> [Amount]

Get a mixed amount's component amounts without normalising zero and missing amounts. This is used for JSON serialisation, so the order is important. In particular, we want the Amounts given in the order of the MixedAmountKeys, i.e. lexicographically first by commodity, then by price commodity, then by unit price from most negative to most positive.

maCommodities :: MixedAmount -> Set CommoditySymbol

Get this mixed amount's commodities as a set. Returns an empty set if there are no amounts.

filterMixedAmount :: (Amount -> Bool) -> MixedAmount -> MixedAmount

Filter a mixed amount's component amounts by a predicate.

filterMixedAmountByCommodity :: CommoditySymbol -> MixedAmount -> MixedAmount

Return an unnormalised MixedAmount containing exactly one Amount with the specified commodity and the quantity of that commodity found in the original. NB if Amount's quantity is zero it will be discarded next time the MixedAmount gets normalised.

mapMixedAmount :: (Amount -> Amount) -> MixedAmount -> MixedAmount

Apply a transform to a mixed amount's component Amounts.

unifyMixedAmount :: MixedAmount -> Maybe Amount

Unify a MixedAmount to a single commodity value if possible. This consolidates amounts of the same commodity and discards zero amounts; but this one insists on simplifying to a single commodity, and will return Nothing if this is not possible.

mixedAmountStripPrices :: MixedAmount -> MixedAmount

Remove all prices from a MixedAmount.

arithmetic

mixedAmountCost :: MixedAmount -> MixedAmount

Convert all component amounts to cost/selling price where possible (see amountCost).

maNegate :: MixedAmount -> MixedAmount

Negate mixed amount's quantities (and total prices, if any).

maPlus :: MixedAmount -> MixedAmount -> MixedAmount

Sum two MixedAmount, keeping the cost of the first if any. Amounts with different costs are kept separate (since 2021).

maMinus :: MixedAmount -> MixedAmount -> MixedAmount

Subtract a MixedAmount from another. Amounts with different costs are kept separate.

maSum :: Foldable t => t MixedAmount -> MixedAmount

Sum a collection of MixedAmounts. Amounts with different costs are kept separate.

divideMixedAmount :: Quantity -> MixedAmount -> MixedAmount

Divide a mixed amount's quantities (and total prices, if any) by a constant.

multiplyMixedAmount :: Quantity -> MixedAmount -> MixedAmount

Multiply a mixed amount's quantities (and total prices, if any) by a constant.

averageMixedAmounts :: [MixedAmount] -> MixedAmount

Calculate the average of some mixed amounts.

isNegativeAmount :: Amount -> Bool

Is this amount negative ? The price is ignored.

isNegativeMixedAmount :: MixedAmount -> Maybe Bool

Is this mixed amount negative, if we can tell that unambiguously? Ie when normalised, are all individual commodity amounts negative ?

mixedAmountIsZero :: MixedAmount -> Bool

Is this mixed amount exactly zero, ignoring its display precision? i.e. does it have zero quantity with no price, zero quantity with a total price (which is also zero), and zero quantity for each unit price?

maIsZero :: MixedAmount -> Bool

Is this mixed amount exactly zero, ignoring its display precision?

A convenient alias for mixedAmountIsZero.

maIsNonZero :: MixedAmount -> Bool

Is this mixed amount non-zero, ignoring its display precision?

A convenient alias for not . mixedAmountIsZero.

mixedAmountLooksZero :: MixedAmount -> Bool

Does this mixed amount appear to be zero when rendered with its display precision? i.e. does it have zero quantity with no price, zero quantity with a total price (which is also zero), and zero quantity for each unit price?

rendering

styleMixedAmount :: Map CommoditySymbol AmountStyle -> MixedAmount -> MixedAmount

Given a map of standard commodity display styles, apply the appropriate one to each individual amount.

mixedAmountUnstyled :: MixedAmount -> MixedAmount

Reset each individual amount's display style to the default.

showMixedAmount :: MixedAmount -> String

Get the string representation of a mixed amount, after normalising it to one amount per commodity. Assumes amounts have no or similar prices, otherwise this can show misleading prices.

showMixedAmount = wbUnpack . showMixedAmountB noColour

showMixedAmountOneLine :: MixedAmount -> String

Get the one-line string representation of a mixed amount (also showing any costs).

showMixedAmountOneLine = wbUnpack . showMixedAmountB oneLine

showMixedAmountDebug :: MixedAmount -> String

Get an unambiguous string representation of a mixed amount for debugging.

showMixedAmountWithoutPrice :: Bool -> MixedAmount -> String

Get the string representation of a mixed amount, without showing any transaction prices. With a True argument, adds ANSI codes to show negative amounts in red.

showMixedAmountWithoutPrice c = wbUnpack . showMixedAmountB noPrice{displayColour=c}

showMixedAmountOneLineWithoutPrice :: Bool -> MixedAmount -> String

Get the one-line string representation of a mixed amount, but without any @ prices. With a True argument, adds ANSI codes to show negative amounts in red.

showMixedAmountOneLineWithoutPrice c = wbUnpack . showMixedAmountB oneLine{displayColour=c}

showMixedAmountElided :: Int -> Bool -> MixedAmount -> String

Like showMixedAmountOneLineWithoutPrice, but show at most the given width, with an elision indicator if there are more. With a True argument, adds ANSI codes to show negative amounts in red.

showMixedAmountElided w c = wbUnpack . showMixedAmountB oneLine{displayColour=c, displayMaxWidth=Just w}

showMixedAmountWithZeroCommodity :: MixedAmount -> String

Like showMixedAmount, but zero amounts are shown with their commodity if they have one.

showMixedAmountWithZeroCommodity = wbUnpack . showMixedAmountB noColour{displayZeroCommodity=True}

showMixedAmountB :: AmountDisplayOpts -> MixedAmount -> WideBuilder

General function to generate a WideBuilder for a MixedAmount, according to the supplied AmountDisplayOpts. This is the main function to use for showing MixedAmounts, constructing a builder; it can then be converted to a Text with wbToText, or to a String with wbUnpack.

If a maximum width is given then: - If displayed on one line, it will display as many Amounts as can fit in the given width, and further Amounts will be elided. There will always be at least one amount displayed, even if this will exceed the requested maximum width. - If displayed on multiple lines, any Amounts longer than the maximum width will be elided.

showMixedAmountLinesB :: AmountDisplayOpts -> MixedAmount -> [WideBuilder]

Helper for showMixedAmountB to show a list of Amounts on multiple lines. This returns the list of WideBuilders: one for each Amount, and padded/elided to the appropriate width. This does not honour displayOneLine: all amounts will be displayed as if displayOneLine were False.

wbToText :: WideBuilder -> Text

Convert a WideBuilder to a strict Text.

wbUnpack :: WideBuilder -> String

Convert a WideBuilder to a String.

mixedAmountSetPrecision :: AmountPrecision -> MixedAmount -> MixedAmount

Set the display precision in the amount's commodities.

mixedAmountSetFullPrecision :: MixedAmount -> MixedAmount

In each component amount, increase the display precision sufficiently to render it exactly (showing all significant decimal digits).

canonicaliseMixedAmount :: Map CommoditySymbol AmountStyle -> MixedAmount -> MixedAmount

Canonicalise a mixed amount's display styles using the provided commodity style map.

misc.

tests_Amount :: TestTree

Orphan instances

Monoid MixedAmount

Methods

mempty :: MixedAmount

mappend :: MixedAmount -> MixedAmount -> MixedAmount

mconcat :: [MixedAmount] -> MixedAmount

Semigroup MixedAmount

Methods

(<>) :: MixedAmount -> MixedAmount -> MixedAmount

sconcat :: NonEmpty MixedAmount -> MixedAmount

stimes :: Integral b => b -> MixedAmount -> MixedAmount

Num Amount

Methods

(+) :: Amount -> Amount -> Amount

(-) :: Amount -> Amount -> Amount

(*) :: Amount -> Amount -> Amount

negate :: Amount -> Amount

abs :: Amount -> Amount

signum :: Amount -> Amount

fromInteger :: Integer -> Amount

Num MixedAmount

Methods

(+) :: MixedAmount -> MixedAmount -> MixedAmount

(-) :: MixedAmount -> MixedAmount -> MixedAmount

(*) :: MixedAmount -> MixedAmount -> MixedAmount

negate :: MixedAmount -> MixedAmount

abs :: MixedAmount -> MixedAmount

signum :: MixedAmount -> MixedAmount

fromInteger :: Integer -> MixedAmount