538 lines
21 KiB
Haskell
538 lines
21 KiB
Haskell
{-# LANGUAGE NamedFieldPuns #-}
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{-|
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A 'Posting' represents a change (by some 'MixedAmount') of the balance in
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some 'Account'. Each 'Transaction' contains two or more postings which
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should add up to 0. Postings reference their parent transaction, so we can
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look up the date or description there.
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-}
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{-# LANGUAGE OverloadedStrings #-}
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module Hledger.Data.Posting (
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-- * Posting
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nullposting,
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posting,
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post,
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vpost,
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post',
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vpost',
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nullsourcepos,
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nullassertion,
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balassert,
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balassertTot,
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balassertParInc,
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balassertTotInc,
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-- * operations
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originalPosting,
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postingStatus,
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isReal,
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isVirtual,
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isBalancedVirtual,
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isEmptyPosting,
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hasBalanceAssignment,
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hasAmount,
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postingAllTags,
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transactionAllTags,
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relatedPostings,
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postingStripPrices,
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postingApplyAliases,
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postingApplyCommodityStyles,
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postingAddTags,
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-- * date operations
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postingDate,
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postingDate2,
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postingDateOrDate2,
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isPostingInDateSpan,
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isPostingInDateSpan',
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-- * account name operations
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accountNamesFromPostings,
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-- * comment/tag operations
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commentJoin,
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commentAddTag,
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commentAddTagNextLine,
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-- * arithmetic
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sumPostings,
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-- * rendering
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showPosting,
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showPostingLines,
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postingAsLines,
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postingsAsLines,
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showAccountName,
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renderCommentLines,
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showBalanceAssertion,
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-- * misc.
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postingTransformAmount,
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postingApplyValuation,
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postingToCost,
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postingAddInferredEquityPostings,
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postingPriceDirectivesFromCost,
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tests_Posting
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)
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where
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import Data.Default (def)
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import Data.Foldable (asum)
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import qualified Data.Map as M
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import Data.Maybe (fromMaybe, isJust, mapMaybe)
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import Data.List (foldl', sort, union)
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import qualified Data.Set as S
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import Data.Text (Text)
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import qualified Data.Text as T
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import qualified Data.Text.Lazy as TL
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import qualified Data.Text.Lazy.Builder as TB
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import Data.Time.Calendar (Day)
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import Safe (maximumBound)
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import Text.DocLayout (realLength)
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import Text.Tabular.AsciiWide hiding (render)
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import Hledger.Utils
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import Hledger.Data.Types
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import Hledger.Data.Amount
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import Hledger.Data.AccountName
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import Hledger.Data.Dates (nulldate, spanContainsDate)
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import Hledger.Data.Valuation
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nullposting, posting :: Posting
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nullposting = Posting
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{pdate=Nothing
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,pdate2=Nothing
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,pstatus=Unmarked
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,paccount=""
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,pamount=nullmixedamt
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,pcomment=""
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,ptype=RegularPosting
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,ptags=[]
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,pbalanceassertion=Nothing
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,ptransaction=Nothing
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,poriginal=Nothing
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}
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posting = nullposting
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-- constructors
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-- | Make a posting to an account.
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post :: AccountName -> Amount -> Posting
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post acc amt = posting {paccount=acc, pamount=mixedAmount amt}
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-- | Make a virtual (unbalanced) posting to an account.
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vpost :: AccountName -> Amount -> Posting
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vpost acc amt = (post acc amt){ptype=VirtualPosting}
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-- | Make a posting to an account, maybe with a balance assertion.
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post' :: AccountName -> Amount -> Maybe BalanceAssertion -> Posting
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post' acc amt ass = posting {paccount=acc, pamount=mixedAmount amt, pbalanceassertion=ass}
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-- | Make a virtual (unbalanced) posting to an account, maybe with a balance assertion.
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vpost' :: AccountName -> Amount -> Maybe BalanceAssertion -> Posting
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vpost' acc amt ass = (post' acc amt ass){ptype=VirtualPosting, pbalanceassertion=ass}
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nullsourcepos :: (SourcePos, SourcePos)
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nullsourcepos = (SourcePos "" (mkPos 1) (mkPos 1), SourcePos "" (mkPos 2) (mkPos 1))
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nullassertion :: BalanceAssertion
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nullassertion = BalanceAssertion
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{baamount=nullamt
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,batotal=False
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,bainclusive=False
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,baposition=initialPos ""
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}
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-- | Make a partial, exclusive balance assertion.
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balassert :: Amount -> Maybe BalanceAssertion
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balassert amt = Just $ nullassertion{baamount=amt}
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-- | Make a total, exclusive balance assertion.
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balassertTot :: Amount -> Maybe BalanceAssertion
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balassertTot amt = Just $ nullassertion{baamount=amt, batotal=True}
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-- | Make a partial, inclusive balance assertion.
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balassertParInc :: Amount -> Maybe BalanceAssertion
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balassertParInc amt = Just $ nullassertion{baamount=amt, bainclusive=True}
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-- | Make a total, inclusive balance assertion.
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balassertTotInc :: Amount -> Maybe BalanceAssertion
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balassertTotInc amt = Just $ nullassertion{baamount=amt, batotal=True, bainclusive=True}
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-- | Render a balance assertion, as the =[=][*] symbol and expected amount.
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showBalanceAssertion :: BalanceAssertion -> WideBuilder
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showBalanceAssertion ba =
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singleton '=' <> eq <> ast <> singleton ' ' <> showAmountB def{displayZeroCommodity=True} (baamount ba)
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where
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eq = if batotal ba then singleton '=' else mempty
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ast = if bainclusive ba then singleton '*' else mempty
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singleton c = WideBuilder (TB.singleton c) 1
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-- Get the original posting, if any.
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originalPosting :: Posting -> Posting
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originalPosting p = fromMaybe p $ poriginal p
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showPosting :: Posting -> String
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showPosting p = T.unpack . T.unlines $ postingsAsLines False [p]
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-- | Render a posting, at the appropriate width for aligning with
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-- its siblings if any. Used by the rewrite command.
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showPostingLines :: Posting -> [Text]
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showPostingLines p = first3 $ postingAsLines False False maxacctwidth maxamtwidth p
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where
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linesWithWidths = map (postingAsLines False False maxacctwidth maxamtwidth) . maybe [p] tpostings $ ptransaction p
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maxacctwidth = maximumBound 0 $ map second3 linesWithWidths
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maxamtwidth = maximumBound 0 $ map third3 linesWithWidths
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-- | Given a transaction and its postings, render the postings, suitable
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-- for `print` output. Normally this output will be valid journal syntax which
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-- hledger can reparse (though it may include no-longer-valid balance assertions).
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--
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-- Explicit amounts are shown, any implicit amounts are not.
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--
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-- Postings with multicommodity explicit amounts are handled as follows:
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-- if onelineamounts is true, these amounts are shown on one line,
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-- comma-separated, and the output will not be valid journal syntax.
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-- Otherwise, they are shown as several similar postings, one per commodity.
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--
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-- The output will appear to be a balanced transaction.
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-- Amounts' display precisions, which may have been limited by commodity
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-- directives, will be increased if necessary to ensure this.
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--
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-- Posting amounts will be aligned with each other, starting about 4 columns
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-- beyond the widest account name (see postingAsLines for details).
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postingsAsLines :: Bool -> [Posting] -> [Text]
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postingsAsLines onelineamounts ps = concatMap first3 linesWithWidths
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where
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linesWithWidths = map (postingAsLines False onelineamounts maxacctwidth maxamtwidth) ps
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maxacctwidth = maximumBound 0 $ map second3 linesWithWidths
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maxamtwidth = maximumBound 0 $ map third3 linesWithWidths
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-- | Render one posting, on one or more lines, suitable for `print` output.
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-- There will be an indented account name, plus one or more of status flag,
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-- posting amount, balance assertion, same-line comment, next-line comments.
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--
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-- If the posting's amount is implicit or if elideamount is true, no amount is shown.
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--
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-- If the posting's amount is explicit and multi-commodity, multiple similar
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-- postings are shown, one for each commodity, to help produce parseable journal syntax.
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-- Or if onelineamounts is true, such amounts are shown on one line, comma-separated
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-- (and the output will not be valid journal syntax).
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--
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-- By default, 4 spaces (2 if there's a status flag) are shown between
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-- account name and start of amount area, which is typically 12 chars wide
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-- and contains a right-aligned amount (so 10-12 visible spaces between
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-- account name and amount is typical).
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-- When given a list of postings to be aligned with, the whitespace will be
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-- increased if needed to match the posting with the longest account name.
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-- This is used to align the amounts of a transaction's postings.
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--
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-- Also returns the account width and amount width used.
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postingAsLines :: Bool -> Bool -> Int -> Int -> Posting -> ([Text], Int, Int)
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postingAsLines elideamount onelineamounts acctwidth amtwidth p =
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(concatMap (++ newlinecomments) postingblocks, thisacctwidth, thisamtwidth)
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where
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-- This needs to be converted to strict Text in order to strip trailing
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-- spaces. This adds a small amount of inefficiency, and the only difference
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-- is whether there are trailing spaces in print (and related) reports. This
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-- could be removed and we could just keep everything as a Text Builder, but
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-- would require adding trailing spaces to 42 failing tests.
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postingblocks = [map T.stripEnd . T.lines . TL.toStrict $
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render [ textCell BottomLeft statusandaccount
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, textCell BottomLeft " "
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, Cell BottomLeft [pad amt]
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, Cell BottomLeft [assertion]
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, textCell BottomLeft samelinecomment
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]
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| amt <- shownAmounts]
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render = renderRow def{tableBorders=False, borderSpaces=False} . Group NoLine . map Header
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pad amt = WideBuilder (TB.fromText $ T.replicate w " ") w <> amt
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where w = max 12 amtwidth - wbWidth amt -- min. 12 for backwards compatibility
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assertion = maybe mempty ((WideBuilder (TB.singleton ' ') 1 <>).showBalanceAssertion) $ pbalanceassertion p
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-- pad to the maximum account name width, plus 2 to leave room for status flags, to keep amounts aligned
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statusandaccount = lineIndent . fitText (Just $ 2 + acctwidth) Nothing False True $ pstatusandacct p
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thisacctwidth = realLength $ pacctstr p
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pacctstr p' = showAccountName Nothing (ptype p') (paccount p')
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pstatusandacct p' = pstatusprefix p' <> pacctstr p'
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pstatusprefix p' = case pstatus p' of
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Unmarked -> ""
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s -> T.pack (show s) <> " "
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-- currently prices are considered part of the amount string when right-aligning amounts
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-- Since we will usually be calling this function with the knot tied between
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-- amtwidth and thisamtwidth, make sure thisamtwidth does not depend on
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-- amtwidth at all.
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shownAmounts
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| elideamount = [mempty]
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| otherwise = showMixedAmountLinesB noColour{displayOneLine=onelineamounts} $ pamount p
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thisamtwidth = maximumBound 0 $ map wbWidth shownAmounts
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(samelinecomment, newlinecomments) =
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case renderCommentLines (pcomment p) of [] -> ("",[])
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c:cs -> (c,cs)
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-- | Show an account name, clipped to the given width if any, and
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-- appropriately bracketed/parenthesised for the given posting type.
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showAccountName :: Maybe Int -> PostingType -> AccountName -> Text
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showAccountName w = fmt
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where
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fmt RegularPosting = maybe id T.take w
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fmt VirtualPosting = wrap "(" ")" . maybe id (T.takeEnd . subtract 2) w
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fmt BalancedVirtualPosting = wrap "[" "]" . maybe id (T.takeEnd . subtract 2) w
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-- | Render a transaction or posting's comment as indented, semicolon-prefixed comment lines.
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-- The first line (unless empty) will have leading space, subsequent lines will have a larger indent.
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renderCommentLines :: Text -> [Text]
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renderCommentLines t =
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case T.lines t of
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[] -> []
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[l] -> [commentSpace $ comment l] -- single-line comment
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("":ls) -> "" : map (lineIndent . comment) ls -- multi-line comment with empty first line
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(l:ls) -> commentSpace (comment l) : map (lineIndent . comment) ls
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where
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comment = ("; "<>)
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-- | Prepend a suitable indent for a posting (or transaction/posting comment) line.
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lineIndent :: Text -> Text
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lineIndent = (" "<>)
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-- | Prepend the space required before a same-line comment.
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commentSpace :: Text -> Text
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commentSpace = (" "<>)
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isReal :: Posting -> Bool
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isReal p = ptype p == RegularPosting
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isVirtual :: Posting -> Bool
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isVirtual p = ptype p == VirtualPosting
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isBalancedVirtual :: Posting -> Bool
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isBalancedVirtual p = ptype p == BalancedVirtualPosting
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hasAmount :: Posting -> Bool
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hasAmount = not . isMissingMixedAmount . pamount
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hasBalanceAssignment :: Posting -> Bool
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hasBalanceAssignment p = not (hasAmount p) && isJust (pbalanceassertion p)
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-- | Sorted unique account names referenced by these postings.
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accountNamesFromPostings :: [Posting] -> [AccountName]
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accountNamesFromPostings = S.toList . S.fromList . map paccount
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-- | Sum all amounts from a list of postings.
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sumPostings :: [Posting] -> MixedAmount
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sumPostings = foldl' (\amt p -> maPlus amt $ pamount p) nullmixedamt
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-- | Strip all prices from a Posting.
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postingStripPrices :: Posting -> Posting
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postingStripPrices = postingTransformAmount mixedAmountStripPrices
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-- | Get a posting's (primary) date - it's own primary date if specified,
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-- otherwise the parent transaction's primary date, or the null date if
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-- there is no parent transaction.
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postingDate :: Posting -> Day
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postingDate p = fromMaybe nulldate $ asum dates
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where dates = [ pdate p, tdate <$> ptransaction p ]
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-- | Get a posting's secondary (secondary) date, which is the first of:
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-- posting's secondary date, transaction's secondary date, posting's
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-- primary date, transaction's primary date, or the null date if there is
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-- no parent transaction.
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postingDate2 :: Posting -> Day
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postingDate2 p = fromMaybe nulldate $ asum dates
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where dates = [ pdate2 p
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, tdate2 =<< ptransaction p
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, pdate p
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, tdate <$> ptransaction p
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]
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-- | Get a posting's primary or secondary date, as specified.
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postingDateOrDate2 :: WhichDate -> Posting -> Day
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postingDateOrDate2 PrimaryDate = postingDate
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postingDateOrDate2 SecondaryDate = postingDate2
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-- | Get a posting's status. This is cleared or pending if those are
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-- explicitly set on the posting, otherwise the status of its parent
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-- transaction, or unmarked if there is no parent transaction. (Note
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-- the ambiguity, unmarked can mean "posting and transaction are both
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-- unmarked" or "posting is unmarked and don't know about the transaction".
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postingStatus :: Posting -> Status
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postingStatus Posting{pstatus=s, ptransaction=mt} = case s of
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Unmarked -> maybe Unmarked tstatus mt
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_ -> s
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-- | Tags for this posting including any inherited from its parent transaction.
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postingAllTags :: Posting -> [Tag]
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postingAllTags p = ptags p ++ maybe [] ttags (ptransaction p)
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-- | Tags for this transaction including any from its postings.
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transactionAllTags :: Transaction -> [Tag]
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transactionAllTags t = ttags t ++ concatMap ptags (tpostings t)
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-- Get the other postings from this posting's transaction.
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relatedPostings :: Posting -> [Posting]
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relatedPostings p@Posting{ptransaction=Just t} = filter (/= p) $ tpostings t
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relatedPostings _ = []
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-- | Does this posting fall within the given date span ?
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isPostingInDateSpan :: DateSpan -> Posting -> Bool
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isPostingInDateSpan = isPostingInDateSpan' PrimaryDate
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-- --date2-sensitive version, separate for now to avoid disturbing multiBalanceReport.
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isPostingInDateSpan' :: WhichDate -> DateSpan -> Posting -> Bool
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isPostingInDateSpan' PrimaryDate s = spanContainsDate s . postingDate
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isPostingInDateSpan' SecondaryDate s = spanContainsDate s . postingDate2
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isEmptyPosting :: Posting -> Bool
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isEmptyPosting = mixedAmountLooksZero . pamount
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-- | Apply some account aliases to the posting's account name, as described by accountNameApplyAliases.
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-- This can fail due to a bad replacement pattern in a regular expression alias.
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postingApplyAliases :: [AccountAlias] -> Posting -> Either RegexError Posting
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postingApplyAliases aliases p@Posting{paccount} =
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case accountNameApplyAliases aliases paccount of
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Right a -> Right p{paccount=a}
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Left e -> Left err
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where
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err = "problem while applying account aliases:\n" ++ pshow aliases
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++ "\n to account name: "++T.unpack paccount++"\n "++e
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-- | Choose and apply a consistent display style to the posting
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-- amounts in each commodity (see journalCommodityStyles).
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postingApplyCommodityStyles :: M.Map CommoditySymbol AmountStyle -> Posting -> Posting
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postingApplyCommodityStyles styles p = p{pamount=styleMixedAmount styles $ pamount p
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,pbalanceassertion=fixbalanceassertion <$> pbalanceassertion p}
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where
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fixbalanceassertion ba = ba{baamount=styleAmountExceptPrecision styles $ baamount ba}
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-- | Add tags to a posting, discarding any for which the posting already has a value.
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postingAddTags :: Posting -> [Tag] -> Posting
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postingAddTags p@Posting{ptags} tags = p{ptags=ptags `union` tags}
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-- | Apply a specified valuation to this posting's amount, using the
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-- provided price oracle, commodity styles, and reference dates.
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-- See amountApplyValuation.
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postingApplyValuation :: PriceOracle -> M.Map CommoditySymbol AmountStyle -> Day -> Day -> ValuationType -> Posting -> Posting
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postingApplyValuation priceoracle styles periodlast today v p =
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postingTransformAmount (mixedAmountApplyValuation priceoracle styles periodlast today (postingDate p) v) p
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-- | Maybe convert this 'Posting's amount to cost, and apply apply appropriate
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-- amount styles.
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postingToCost :: M.Map CommoditySymbol AmountStyle -> ConversionOp -> Posting -> Maybe Posting
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postingToCost _ NoConversionOp p = Just p
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postingToCost styles ToCost p
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-- If this is a conversion posting with a matched transaction price posting, ignore it
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| "_conversion-matched" `elem` map fst (ptags p) && noCost = Nothing
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| otherwise = Just $ postingTransformAmount (styleMixedAmount styles . mixedAmountCost) p
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where
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noCost = (not . any (isJust . aprice) . amountsRaw) $ pamount p
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-- | Generate inferred equity postings from a 'Posting' using transaction prices.
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-- Make sure not to generate equity postings when there are already matched
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-- conversion postings.
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postingAddInferredEquityPostings :: Text -> Posting -> [Posting]
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postingAddInferredEquityPostings equityAcct p
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| "_price-matched" `elem` map fst (ptags p) = [p]
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| otherwise = taggedPosting : concatMap conversionPostings priceAmounts
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where
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taggedPosting
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| null priceAmounts = p
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| otherwise = p{ ptags = ("_price-matched","") : ptags p }
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conversionPostings amt = case aprice amt of
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Nothing -> []
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Just _ -> [ cp{ paccount = accountPrefix <> amtCommodity
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, pamount = mixedAmount . negate $ amountStripPrices amt
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}
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, cp{ paccount = accountPrefix <> costCommodity
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, pamount = mixedAmount cost
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}
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]
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where
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cost = amountCost amt
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amtCommodity = commodity amt
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costCommodity = commodity cost
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cp = p{ pcomment = pcomment p `commentAddTag` ("generated-posting","")
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, ptags = [("_conversion-matched", ""), ("generated-posting", ""), ("_generated-posting", "")]
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, pbalanceassertion = Nothing
|
|
, poriginal = Nothing
|
|
}
|
|
accountPrefix = mconcat [ equityAcct, ":", T.intercalate "-" $ sort [amtCommodity, costCommodity], ":"]
|
|
-- Take the commodity of an amount and collapse consecutive spaces to a single space
|
|
commodity = T.unwords . filter (not . T.null) . T.words . acommodity
|
|
|
|
priceAmounts = filter (isJust . aprice) . amountsRaw $ pamount p
|
|
|
|
-- | Make a market price equivalent to this posting's amount's unit
|
|
-- price, if any.
|
|
postingPriceDirectivesFromCost :: Posting -> [PriceDirective]
|
|
postingPriceDirectivesFromCost p@Posting{pamount} =
|
|
mapMaybe (amountPriceDirectiveFromCost $ postingDate p) $ amountsRaw pamount
|
|
|
|
-- | Apply a transform function to this posting's amount.
|
|
postingTransformAmount :: (MixedAmount -> MixedAmount) -> Posting -> Posting
|
|
postingTransformAmount f p@Posting{pamount=a} = p{pamount=f a}
|
|
|
|
-- | Join two parts of a comment, eg a tag and another tag, or a tag
|
|
-- and a non-tag, on a single line. Interpolates a comma and space
|
|
-- unless one of the parts is empty.
|
|
commentJoin :: Text -> Text -> Text
|
|
commentJoin c1 c2
|
|
| T.null c1 = c2
|
|
| T.null c2 = c1
|
|
| otherwise = c1 <> ", " <> c2
|
|
|
|
-- | Add a tag to a comment, comma-separated from any prior content.
|
|
-- A space is inserted following the colon, before the value.
|
|
commentAddTag :: Text -> Tag -> Text
|
|
commentAddTag c (t,v)
|
|
| T.null c' = tag
|
|
| otherwise = c' `commentJoin` tag
|
|
where
|
|
c' = T.stripEnd c
|
|
tag = t <> ": " <> v
|
|
|
|
-- | Add a tag on its own line to a comment, preserving any prior content.
|
|
-- A space is inserted following the colon, before the value.
|
|
commentAddTagNextLine :: Text -> Tag -> Text
|
|
commentAddTagNextLine cmt (t,v) =
|
|
cmt <> (if "\n" `T.isSuffixOf` cmt then "" else "\n") <> t <> ": " <> v
|
|
|
|
|
|
-- tests
|
|
|
|
tests_Posting = testGroup "Posting" [
|
|
|
|
testCase "accountNamePostingType" $ do
|
|
accountNamePostingType "a" @?= RegularPosting
|
|
accountNamePostingType "(a)" @?= VirtualPosting
|
|
accountNamePostingType "[a]" @?= BalancedVirtualPosting
|
|
|
|
,testCase "accountNameWithoutPostingType" $ do
|
|
accountNameWithoutPostingType "(a)" @?= "a"
|
|
|
|
,testCase "accountNameWithPostingType" $ do
|
|
accountNameWithPostingType VirtualPosting "[a]" @?= "(a)"
|
|
|
|
,testCase "joinAccountNames" $ do
|
|
"a" `joinAccountNames` "b:c" @?= "a:b:c"
|
|
"a" `joinAccountNames` "(b:c)" @?= "(a:b:c)"
|
|
"[a]" `joinAccountNames` "(b:c)" @?= "[a:b:c]"
|
|
"" `joinAccountNames` "a" @?= "a"
|
|
|
|
,testCase "concatAccountNames" $ do
|
|
concatAccountNames [] @?= ""
|
|
concatAccountNames ["a","(b)","[c:d]"] @?= "(a:b:c:d)"
|
|
|
|
,testCase "commentAddTag" $ do
|
|
commentAddTag "" ("a","") @?= "a: "
|
|
commentAddTag "[1/2]" ("a","") @?= "[1/2], a: "
|
|
|
|
,testCase "commentAddTagNextLine" $ do
|
|
commentAddTagNextLine "" ("a","") @?= "\na: "
|
|
commentAddTagNextLine "[1/2]" ("a","") @?= "[1/2]\na: "
|
|
|
|
]
|
|
|