dabb3ef82e
supplant the old interface, which relied on the Num typeclass. MixedAmount did not have a very good Num instance. The only functions which were defined were fromInteger, (+), and negate. Furthermore, it was not law-abiding, as 0 + a /= a in general. Replacements for used functions are: 0 -> nullmixedamt / mempty (+) -> maPlus / (<>) (-) -> maMinus negate -> maNegate sum -> maSum sumStrict -> maSum Also creates some new constructors for MixedAmount: mixedAmount :: Amount -> MixedAmount maAddAmount :: MixedAmount -> Amount -> MixedAmount maAddAmounts :: MixedAmount -> [Amount] -> MixedAmount Add Semigroup and Monoid instances for MixedAmount. Ideally we would remove the Num instance entirely. The only change needed have nullmixedamt/mempty substitute for 0 without problems was to not squash prices in mixedAmount(Looks|Is)Zero. This is correct behaviour in any case.
46 lines
1.3 KiB
Haskell
46 lines
1.3 KiB
Haskell
{-# LANGUAGE QuasiQuotes, TemplateHaskell, OverloadedStrings #-}
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{-|
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The @incomestatement@ command prints a simple income statement (profit & loss report).
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-}
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module Hledger.Cli.Commands.Incomestatement (
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incomestatementmode
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,incomestatement
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) where
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import System.Console.CmdArgs.Explicit
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import Hledger
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import Hledger.Cli.CliOptions
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import Hledger.Cli.CompoundBalanceCommand
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incomestatementSpec = CompoundBalanceCommandSpec {
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cbcdoc = $(embedFileRelative "Hledger/Cli/Commands/Incomestatement.txt"),
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cbctitle = "Income Statement",
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cbcqueries = [
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CBCSubreportSpec{
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cbcsubreporttitle="Revenues"
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,cbcsubreportquery=journalRevenueAccountQuery
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,cbcsubreportoptions=(\ropts -> ropts{normalbalance_=Just NormallyNegative})
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,cbcsubreporttransform=fmap maNegate
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,cbcsubreportincreasestotal=True
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}
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,CBCSubreportSpec{
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cbcsubreporttitle="Expenses"
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,cbcsubreportquery=journalExpenseAccountQuery
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,cbcsubreportoptions=(\ropts -> ropts{normalbalance_=Just NormallyPositive})
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,cbcsubreporttransform=id
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,cbcsubreportincreasestotal=False
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}
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],
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cbctype = PeriodChange
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}
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incomestatementmode :: Mode RawOpts
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incomestatementmode = compoundBalanceCommandMode incomestatementSpec
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incomestatement :: CliOpts -> Journal -> IO ()
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incomestatement = compoundBalanceCommand incomestatementSpec
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