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; refactor: centralise valuation logic #131
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Simon Michael
parent
ad83919c6a
commit
42ce95aaef
@ -62,7 +62,8 @@ module Hledger.Data.Amount (
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multiplyAmount,
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divideAmountAndPrice,
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multiplyAmountAndPrice,
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amountValue,
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amountValueAtDate,
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amountApplyValuation,
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amountTotalPriceToUnitPrice,
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-- ** rendering
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amountstyle,
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@ -107,7 +108,8 @@ module Hledger.Data.Amount (
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isZeroMixedAmount,
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isReallyZeroMixedAmount,
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isReallyZeroMixedAmountCost,
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mixedAmountValue,
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mixedAmountValueAtDate,
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mixedAmountApplyValuation,
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mixedAmountTotalPriceToUnitPrice,
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-- ** rendering
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styleMixedAmount,
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@ -223,6 +225,35 @@ costOfAmount a@Amount{aquantity=q, aprice=price} =
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amountToCost :: M.Map CommoditySymbol AmountStyle -> Amount -> Amount
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amountToCost styles = styleAmount styles . costOfAmount
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-- | Find the market value of this amount on the given valuation date
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-- in its default valuation commodity (that of the latest applicable
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-- market price before the valuation date).
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-- The given market prices are expected to be in parse order.
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-- If no default valuation commodity can be found, the amount is left
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-- unchanged.
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amountValueAtDate :: Prices -> Day -> Amount -> Amount
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amountValueAtDate prices d a =
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case priceLookup prices d (acommodity a) of
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Just v -> v{aquantity=aquantity v * aquantity a}
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Nothing -> a
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-- | Alternate implementation.
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-- Apply a specified valuation to this amount, using the provided
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-- prices db, commodity styles, period-end/current dates,
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-- and whether this is for a multiperiod report or not.
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-- Currently ignores the specified valuation commodity and always uses
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-- the default valuation commodity.
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amountApplyValuation :: Prices -> M.Map CommoditySymbol AmountStyle -> Day -> Day -> Bool -> ValuationType -> Amount -> Amount
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amountApplyValuation prices styles periodend today ismultiperiod v a =
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-- will use _mc later
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case v of
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AtCost _mc -> amountToCost styles a
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AtEnd _mc -> amountValueAtDate prices periodend a
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AtNow _mc -> amountValueAtDate prices today a
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AtDefault _mc | ismultiperiod -> amountValueAtDate prices periodend a
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AtDefault _mc -> amountValueAtDate prices today a
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AtDate d _mc -> amountValueAtDate prices d a
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-- | Replace an amount's TotalPrice, if it has one, with an equivalent UnitPrice.
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-- Has no effect on amounts without one.
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-- Also increases the unit price's display precision to show one extra decimal place,
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@ -451,18 +482,6 @@ canonicaliseAmount styles a@Amount{acommodity=c, astyle=s} = a{astyle=s'}
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where
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s' = findWithDefault s c styles
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-- | Find the market value of this amount on the given valuation date
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-- in its default valuation commodity (that of the latest applicable
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-- market price before the valuation date).
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-- The given market prices are expected to be in parse order.
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-- If no default valuation commodity can be found, the amount is left
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-- unchanged.
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amountValue :: Prices -> Day -> Amount -> Amount
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amountValue prices d a =
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case priceLookup prices d (acommodity a) of
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Just v -> v{aquantity=aquantity v * aquantity a}
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Nothing -> a
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-------------------------------------------------------------------------------
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-- MixedAmount
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@ -724,8 +743,17 @@ canonicaliseMixedAmount styles (Mixed as) = Mixed $ map (canonicaliseAmount styl
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-- in its default valuation commodity, using the given market prices
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-- which are expected to be in parse order. When no default valuation
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-- commodity can be found, amounts are left unchanged.
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mixedAmountValue :: Prices -> Day -> MixedAmount -> MixedAmount
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mixedAmountValue prices d (Mixed as) = Mixed $ map (amountValue prices d) as
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mixedAmountValueAtDate :: Prices -> Day -> MixedAmount -> MixedAmount
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mixedAmountValueAtDate prices d (Mixed as) = Mixed $ map (amountValueAtDate prices d) as
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-- Apply a specified valuation to this mixed amount, using the provided
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-- prices db, commodity styles, period-end/current dates,
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-- and whether this is for a multiperiod report or not.
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-- Currently ignores the specified valuation commodity and always uses
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-- the default valuation commodity.
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mixedAmountApplyValuation :: Prices -> M.Map CommoditySymbol AmountStyle -> Day -> Day -> Bool -> ValuationType -> MixedAmount -> MixedAmount
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mixedAmountApplyValuation prices styles periodend today ismultiperiod v (Mixed as) =
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Mixed $ map (amountApplyValuation prices styles periodend today ismultiperiod v) as
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-- | Replace each component amount's TotalPrice, if it has one, with an equivalent UnitPrice.
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-- Has no effect on amounts without one.
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@ -65,7 +65,7 @@ module Hledger.Data.Posting (
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-- * misc.
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showComment,
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postingTransformAmount,
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postingValue,
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postingApplyValuation,
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postingToCost,
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tests_Posting
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)
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@ -347,20 +347,36 @@ aliasReplace (BasicAlias old new) a
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| otherwise = a
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aliasReplace (RegexAlias re repl) a = T.pack $ regexReplaceCIMemo re repl $ T.unpack a -- XXX
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-- | Apply a transform function to this posting's amount.
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postingTransformAmount :: (MixedAmount -> MixedAmount) -> Posting -> Posting
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postingTransformAmount f p@Posting{pamount=a} = p{pamount=f a}
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-- Apply a specified valuation to this posting's amount, using the provided
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-- prices db, commodity styles, period-end/current dates, and whether
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-- this is for a multiperiod report or not.
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-- Currently ignores the specified valuation commodity and always uses
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-- the default valuation commodity.
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postingApplyValuation :: Prices -> M.Map CommoditySymbol AmountStyle -> Day -> Day -> Bool -> Posting -> ValuationType -> Posting
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postingApplyValuation prices styles periodend today ismultiperiod p v =
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-- will use _mc later
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case v of
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AtCost _mc -> postingToCost styles p
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AtEnd _mc -> postingValueAtDate prices periodend p
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AtNow _mc -> postingValueAtDate prices today p
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AtDefault _mc | ismultiperiod -> postingValueAtDate prices periodend p
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AtDefault _mc -> postingValueAtDate prices today p
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AtDate d _mc -> postingValueAtDate prices d p
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-- | Convert this posting's amount to cost, and apply the appropriate amount styles.
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postingToCost :: M.Map CommoditySymbol AmountStyle -> Posting -> Posting
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postingToCost styles p@Posting{pamount=a} = p{pamount=mixedAmountToCost styles a}
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-- | Convert this posting's amount to market value in its default
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-- valuation commodity on the given date using the given market prices.
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-- If no default valuation commodity can be found, amounts are left unchanged.
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-- The prices are expected to be in parse order.
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postingValue :: Prices -> Day -> Posting -> Posting
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postingValue prices d p = postingTransformAmount (mixedAmountValue prices d) p
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postingValueAtDate :: Prices -> Day -> Posting -> Posting
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postingValueAtDate prices d p = postingTransformAmount (mixedAmountValueAtDate prices d) p
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-- | Convert this posting's amount to cost, and apply the appropriate amount styles.
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postingToCost :: M.Map CommoditySymbol AmountStyle -> Posting -> Posting
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postingToCost styles p@Posting{pamount=a} = p{pamount=mixedAmountToCost styles a}
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-- | Apply a transform function to this posting's amount.
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postingTransformAmount :: (MixedAmount -> MixedAmount) -> Posting -> Posting
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postingTransformAmount f p@Posting{pamount=a} = p{pamount=f a}
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-- tests
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@ -431,6 +431,16 @@ data MarketPrice = MarketPrice {
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instance NFData MarketPrice
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-- | What kind of value conversion should be done on amounts ?
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-- UI: --value=cost|end|now|DATE[,COMM]
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data ValuationType =
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AtCost (Maybe CommoditySymbol) -- ^ convert to cost commodity using transaction prices, then optionally to given commodity using market prices at posting date
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| AtEnd (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using market prices at period end(s)
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| AtNow (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using current market prices
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| AtDate Day (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using market prices on some date
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| AtDefault (Maybe CommoditySymbol) -- ^ works like AtNow in single period reports, like AtEnd in multiperiod reports
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deriving (Show,Data,Eq) -- Typeable
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-- | A Journal, containing transactions and various other things.
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-- The basic data model for hledger.
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--
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@ -74,6 +74,7 @@ balanceReport ropts@ReportOpts{..} q j =
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today = fromMaybe (error' "balanceReport: ReportOpts today_ is unset so could not satisfy --value=now") today_
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multiperiod = interval_ /= NoInterval
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prices = journalPrices j
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styles = journalCommodityStyles j
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-- Get all the summed accounts & balances, according to the query, as an account tree.
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-- If doing cost valuation, amounts will be converted to cost first.
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@ -84,14 +85,7 @@ balanceReport ropts@ReportOpts{..} q j =
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where
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valueaccount a@Account{..} = a{aebalance=val aebalance, aibalance=val aibalance}
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where
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val = case value_ of
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Nothing -> id
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Just (AtCost _mc) -> id
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Just (AtEnd _mc) -> mixedAmountValue prices periodlastday
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Just (AtNow _mc) -> mixedAmountValue prices today
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Just (AtDefault _mc) | multiperiod -> mixedAmountValue prices periodlastday
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Just (AtDefault _mc) -> mixedAmountValue prices today
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Just (AtDate d _mc) -> mixedAmountValue prices d
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val = maybe id (mixedAmountApplyValuation prices styles periodlastday today multiperiod) value_
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where
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periodlastday =
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fromMaybe (error' "balanceReport: expected a non-empty journal") $ -- XXX shouldn't happen
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@ -41,22 +41,11 @@ entriesReport ropts@ReportOpts{..} q j@Journal{..} =
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prices = journalPrices j
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styles = journalCommodityStyles j
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tvalue t@Transaction{..} = t{tpostings=map pvalue tpostings}
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pvalue p@Posting{..} = case value_ of
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Nothing -> p
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Just (AtCost _mc) -> postingToCost styles p
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Just (AtEnd _mc) -> valueend p
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Just (AtNow _mc) -> valuenow p
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Just (AtDefault _mc) -> valuenow p
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Just (AtDate d _mc) -> postingValue prices d p
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pvalue p = maybe p (postingApplyValuation prices styles end today False p) value_
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where
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today = fromMaybe (error' "erValue: ReportOpts today_ is unset so could not satisfy --value=now") today_
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end = fromMaybe (postingDate p) mperiodorjournallastday
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where
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valueend p = postingValue prices (
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fromMaybe (postingDate p) -- XXX shouldn't happen
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mperiodorjournallastday
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) p
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valuenow p = postingValue prices (
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case today_ of Just d -> d
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Nothing -> error' "erValue: ReportOpts today_ is unset so could not satisfy --value=now"
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) p
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mperiodorjournallastday = mperiodlastday <|> journalEndDate False j
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where
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-- The last day of the report period.
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@ -157,8 +157,9 @@ multiBalanceReport ropts@ReportOpts{..} q j@Journal{..} =
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-- end: summed/averaged row amounts
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-- date: summed/averaged row amounts
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today = fromMaybe (error' "postingsReport: ReportOpts today_ is unset so could not satisfy --value=now") today_
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-- Market prices.
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-- Market prices, commodity display styles.
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prices = journalPrices j
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styles = journalCommodityStyles j
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-- The last day of each column subperiod.
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lastdays :: [Day] =
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map ((maybe
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@ -273,17 +274,8 @@ multiBalanceReport ropts@ReportOpts{..} q j@Journal{..} =
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CumulativeChange -> drop 1 $ scanl (+) 0 changes
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HistoricalBalance -> drop 1 $ scanl (+) (startingBalanceFor a) changes
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-- The row amounts valued according to --value if needed.
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, let rowbalsendvalue = [mixedAmountValue prices periodlastday amt | (amt,periodlastday) <- zip rowbals lastdays]
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, let rowbalsdatevalue d = [mixedAmountValue prices d amt | amt <- rowbals]
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, let valuedrowbals = dbg1 "valuedrowbals" $ case value_ of
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Nothing -> rowbals
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Just (AtCost _mc) -> rowbals -- cost valuation was handled earlier
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Just (AtEnd _mc) -> rowbalsendvalue
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Just (AtNow _mc) -> rowbalsdatevalue today
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Just (AtDefault _mc) | multiperiod -> rowbalsendvalue
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Just (AtDefault _mc) -> rowbalsdatevalue today
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Just (AtDate d _mc) -> rowbalsdatevalue d
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, let val end = maybe id (mixedAmountApplyValuation prices styles end today multiperiod) value_
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, let valuedrowbals = dbg1 "valuedrowbals" $ [val periodlastday amt | (amt,periodlastday) <- zip rowbals lastdays]
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-- The total and average for the row, and their values.
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-- Total for a cumulative/historical report is always zero.
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, let rowtot = if balancetype_==PeriodChange then sum valuedrowbals else 0
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@ -74,6 +74,7 @@ postingsReport ropts@ReportOpts{..} q j@Journal{..} =
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whichdate = whichDateFromOpts ropts
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depth = queryDepth q
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prices = journalPrices j
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styles = journalCommodityStyles j
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-- postings to be included in the report, and similarly-matched postings before the report start date
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(precedingps, reportps) = matchedPostingsBeforeAndDuring ropts q j reportspan
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@ -91,49 +92,26 @@ postingsReport ropts@ReportOpts{..} q j@Journal{..} =
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--
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-- In all cases, the running total/average is calculated from the above numbers.
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-- "Day before report start" is a bit arbitrary.
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today = fromMaybe (error' "postingsReport: ReportOpts today_ is unset so could not satisfy --value=now") today_
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multiperiod = interval_ /= NoInterval
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-- Postings, or summary postings along with their subperiod's end date, to be displayed.
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displayps :: [(Posting, Maybe Day)] =
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if multiperiod then
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let
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showempty = empty_ || average_
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summaryps = summarisePostingsByInterval interval_ whichdate depth showempty reportspan reportps
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summaryps' = [(p, Just e) | (p,e) <- summaryps]
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summarypsendvalue = [ (postingValue prices periodlastday p, Just periodend)
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| (p,periodend) <- summaryps
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, let periodlastday = addDays (-1) periodend
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]
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summarypsdatevalue d = [(postingValue prices d p, Just periodend) | (p,periodend) <- summaryps]
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in case value_ of
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Nothing -> summaryps'
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Just (AtCost _mc) -> summaryps' -- conversion to cost was done earlier
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Just (AtEnd _mc) -> summarypsendvalue
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Just (AtNow _mc) -> summarypsdatevalue today
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Just (AtDefault _mc) | multiperiod -> summarypsendvalue
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Just (AtDefault _mc) -> summarypsdatevalue today
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Just (AtDate d _mc) -> summarypsdatevalue d
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else
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let
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today =
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fromMaybe (error' "postingsReport: ReportOpts today_ is unset so could not satisfy --value=now")
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today_
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reportperiodlastday =
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fromMaybe (error' "postingsReport: expected a non-empty journal") -- XXX shouldn't happen
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$ reportPeriodOrJournalLastDay ropts j
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reportpsdatevalue d = [(postingValue prices d p, Nothing) | p <- reportps]
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reportpsnovalue = [(p, Nothing) | p <- reportps]
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in case value_ of
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Nothing -> reportpsnovalue
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Just (AtCost _mc) -> reportpsnovalue -- conversion to cost was done earlier
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Just (AtEnd _mc) -> reportpsdatevalue reportperiodlastday
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Just (AtNow _mc) -> reportpsdatevalue today
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Just (AtDefault _mc) | multiperiod -> reportpsdatevalue reportperiodlastday
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Just (AtDefault _mc) -> reportpsdatevalue today
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Just (AtDate d _mc) -> reportpsdatevalue d
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fromMaybe (error' "postingsReport: expected a non-empty journal") $ -- XXX shouldn't happen
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reportPeriodOrJournalLastDay ropts j
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multiperiod = interval_ /= NoInterval
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showempty = empty_ || average_
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pvalue p end = maybe p (postingApplyValuation prices styles end today multiperiod p) value_
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-- Postings, or summary postings with their subperiod's end date, to be displayed.
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displayps :: [(Posting, Maybe Day)]
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| multiperiod =
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let summaryps = summarisePostingsByInterval interval_ whichdate depth showempty reportspan reportps
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in [(pvalue p lastday, Just periodend) | (p, periodend) <- summaryps, let lastday = addDays (-1) periodend]
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| otherwise =
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[(pvalue p reportperiodlastday, Nothing) | p <- reportps]
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-- posting report items ready for display
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items = dbg1 "postingsReport items" $ postingsReportItems displayps (nullposting,Nothing) whichdate depth valuedstartbal runningcalc startnum
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items = dbg1 "postingsReport items" $ postingsReportItems displayps (nullposting,Nothing) whichdate depth startbalvalued runningcalc startnum
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where
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historical = balancetype_ == HistoricalBalance
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precedingsum = sumPostings precedingps
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@ -142,15 +120,9 @@ postingsReport ropts@ReportOpts{..} q j@Journal{..} =
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startbal | average_ = if historical then precedingavg else 0
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| otherwise = if historical then precedingsum else 0
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-- For --value=end/now/DATE, convert the initial running total/average to value.
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startbaldatevalue d = mixedAmountValue prices d startbal
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valuedstartbal = case value_ of
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Nothing -> startbal
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Just (AtCost _mc) -> startbal -- conversion to cost was done earlier
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Just (AtEnd _mc) -> startbaldatevalue daybeforereportstart
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Just (AtNow _mc) -> startbaldatevalue today
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Just (AtDefault _mc) | multiperiod -> startbaldatevalue daybeforereportstart
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Just (AtDefault _mc) -> startbaldatevalue today
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Just (AtDate d _mc) -> startbaldatevalue d
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startbalvalued = val startbal
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where
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val = maybe id (mixedAmountApplyValuation prices styles daybeforereportstart today multiperiod) value_
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where
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daybeforereportstart = maybe
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(error' "postingsReport: expected a non-empty journal") -- XXX shouldn't happen
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@ -78,18 +78,6 @@ data AccountListMode = ALDefault | ALTree | ALFlat deriving (Eq, Show, Data, Typ
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instance Default AccountListMode where def = ALDefault
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-- | What kind of value conversion should be done on amounts ?
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-- UI: --value=cost|end|now|DATE[,COMM]
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data ValuationType =
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AtCost (Maybe CommoditySymbol) -- ^ convert to cost commodity using transaction prices, then optionally to given commodity using market prices at posting date
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| AtEnd (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using market prices at period end(s)
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| AtNow (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using current market prices
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| AtDate Day (Maybe CommoditySymbol) -- ^ convert to default valuation commodity or given commodity, using market prices on some date
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| AtDefault (Maybe CommoditySymbol) -- ^ works like AtNow in single period reports, like AtEnd in multiperiod reports
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deriving (Show,Data,Eq) -- Typeable
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-- instance Default ValuationType where def = AtNow Nothing
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-- | Standard options for customising report filtering and output.
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-- Most of these correspond to standard hledger command-line options
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-- or query arguments, but not all. Some are used only by certain
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