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421 lines
17 KiB
Haskell
421 lines
17 KiB
Haskell
{-|
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A 'Transaction' represents a movement of some commodity(ies) between two
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or more accounts. It consists of multiple account 'Posting's which balance
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to zero, a date, and optional extras like description, cleared status, and
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tags.
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-}
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{-# LANGUAGE NamedFieldPuns #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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module Hledger.Data.Transaction
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( -- * Transaction
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nulltransaction
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, transaction
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, txnTieKnot
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, txnUntieKnot
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-- * operations
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, hasRealPostings
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, realPostings
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, assignmentPostings
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, virtualPostings
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, balancedVirtualPostings
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, transactionsPostings
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, transactionTransformPostings
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, transactionApplyValuation
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, transactionToCost
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, transactionAddInferredEquityPostings
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, transactionApplyAliases
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, transactionMapPostings
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, transactionMapPostingAmounts
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-- nonzerobalanceerror
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-- * date operations
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, transactionDate2
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, transactionDateOrDate2
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-- * transaction description parts
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, transactionPayee
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, transactionNote
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-- payeeAndNoteFromDescription
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-- * rendering
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, showTransaction
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, showTransactionOneLineAmounts
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, transactionFile
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-- * tests
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, tests_Transaction
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) where
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import Data.Maybe (fromMaybe)
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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, fromGregorian)
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import qualified Data.Map as M
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import Hledger.Utils
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import Hledger.Data.Types
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import Hledger.Data.Dates
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import Hledger.Data.Posting
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import Hledger.Data.Amount
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import Hledger.Data.Valuation
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nulltransaction :: Transaction
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nulltransaction = Transaction {
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tindex=0,
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tsourcepos=nullsourcepos,
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tdate=nulldate,
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tdate2=Nothing,
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tstatus=Unmarked,
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tcode="",
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tdescription="",
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tcomment="",
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ttags=[],
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tpostings=[],
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tprecedingcomment=""
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}
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-- | Make a simple transaction with the given date and postings.
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transaction :: Day -> [Posting] -> Transaction
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transaction day ps = txnTieKnot $ nulltransaction{tdate=day, tpostings=ps}
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transactionPayee :: Transaction -> Text
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transactionPayee = fst . payeeAndNoteFromDescription . tdescription
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transactionNote :: Transaction -> Text
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transactionNote = snd . payeeAndNoteFromDescription . tdescription
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-- | Parse a transaction's description into payee and note (aka narration) fields,
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-- assuming a convention of separating these with | (like Beancount).
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-- Ie, everything up to the first | is the payee, everything after it is the note.
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-- When there's no |, payee == note == description.
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payeeAndNoteFromDescription :: Text -> (Text,Text)
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payeeAndNoteFromDescription t
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| T.null n = (t, t)
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| otherwise = (T.strip p, T.strip $ T.drop 1 n)
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where
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(p, n) = T.span (/= '|') t
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{-|
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Render a journal transaction as text similar to the style of Ledger's print command.
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Adapted from Ledger 2.x and 3.x standard format:
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@
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yyyy-mm-dd[ *][ CODE] description......... [ ; comment...............]
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account name 1..................... ...$amount1[ ; comment...............]
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account name 2..................... ..$-amount1[ ; comment...............]
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pcodewidth = no limit -- 10 -- mimicking ledger layout.
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pdescwidth = no limit -- 20 -- I don't remember what these mean,
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pacctwidth = 35 minimum, no maximum -- they were important at the time.
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pamtwidth = 11
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pcommentwidth = no limit -- 22
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@
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The output will be parseable journal syntax.
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To facilitate this, postings with explicit multi-commodity amounts
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are displayed as multiple similar postings, one per commodity.
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(Normally does not happen with this function).
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-}
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showTransaction :: Transaction -> Text
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showTransaction = TL.toStrict . TB.toLazyText . showTransactionHelper False
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-- | Like showTransaction, but explicit multi-commodity amounts
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-- are shown on one line, comma-separated. In this case the output will
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-- not be parseable journal syntax.
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showTransactionOneLineAmounts :: Transaction -> Text
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showTransactionOneLineAmounts = TL.toStrict . TB.toLazyText . showTransactionHelper True
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-- | Helper for showTransaction*.
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showTransactionHelper :: Bool -> Transaction -> TB.Builder
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showTransactionHelper onelineamounts t =
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TB.fromText descriptionline <> newline
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<> foldMap ((<> newline) . TB.fromText) newlinecomments
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<> foldMap ((<> newline) . TB.fromText) (postingsAsLines onelineamounts $ tpostings t)
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<> newline
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where
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descriptionline = T.stripEnd $ T.concat [date, status, code, desc, samelinecomment]
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date = showDate (tdate t) <> maybe "" (("="<>) . showDate) (tdate2 t)
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status | tstatus t == Cleared = " *"
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| tstatus t == Pending = " !"
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| otherwise = ""
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code = if T.null (tcode t) then "" else wrap " (" ")" $ tcode t
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desc = if T.null d then "" else " " <> d where d = tdescription t
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(samelinecomment, newlinecomments) =
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case renderCommentLines (tcomment t) of [] -> ("",[])
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c:cs -> (c,cs)
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newline = TB.singleton '\n'
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hasRealPostings :: Transaction -> Bool
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hasRealPostings = not . null . realPostings
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realPostings :: Transaction -> [Posting]
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realPostings = filter isReal . tpostings
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assignmentPostings :: Transaction -> [Posting]
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assignmentPostings = filter hasBalanceAssignment . tpostings
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virtualPostings :: Transaction -> [Posting]
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virtualPostings = filter isVirtual . tpostings
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balancedVirtualPostings :: Transaction -> [Posting]
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balancedVirtualPostings = filter isBalancedVirtual . tpostings
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transactionsPostings :: [Transaction] -> [Posting]
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transactionsPostings = concatMap tpostings
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-- Get a transaction's secondary date, or the primary date if there is none.
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transactionDate2 :: Transaction -> Day
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transactionDate2 t = fromMaybe (tdate t) $ tdate2 t
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-- Get a transaction's primary or secondary date, as specified.
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transactionDateOrDate2 :: WhichDate -> Transaction -> Day
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transactionDateOrDate2 PrimaryDate = tdate
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transactionDateOrDate2 SecondaryDate = transactionDate2
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-- | Ensure a transaction's postings refer back to it, so that eg
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-- relatedPostings works right.
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txnTieKnot :: Transaction -> Transaction
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txnTieKnot t@Transaction{tpostings=ps} = t' where
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t' = t{tpostings=map (postingSetTransaction t') ps}
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-- | Ensure a transaction's postings do not refer back to it, so that eg
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-- recursiveSize and GHCI's :sprint work right.
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txnUntieKnot :: Transaction -> Transaction
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txnUntieKnot t@Transaction{tpostings=ps} = t{tpostings=map (\p -> p{ptransaction=Nothing}) ps}
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-- | Set a posting's parent transaction.
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postingSetTransaction :: Transaction -> Posting -> Posting
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postingSetTransaction t p = p{ptransaction=Just t}
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-- | Apply a transform function to this transaction's amounts.
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transactionTransformPostings :: (Posting -> Posting) -> Transaction -> Transaction
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transactionTransformPostings f t@Transaction{tpostings=ps} = t{tpostings=map f ps}
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-- | Apply a specified valuation to this transaction's amounts, using
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-- the provided price oracle, commodity styles, and reference dates.
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-- See amountApplyValuation.
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transactionApplyValuation :: PriceOracle -> M.Map CommoditySymbol AmountStyle -> Day -> Day -> ValuationType -> Transaction -> Transaction
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transactionApplyValuation priceoracle styles periodlast today v =
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transactionTransformPostings (postingApplyValuation priceoracle styles periodlast today v)
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-- | Maybe convert this 'Transaction's amounts to cost and apply the
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-- appropriate amount styles.
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transactionToCost :: M.Map CommoditySymbol AmountStyle -> ConversionOp -> Transaction -> Transaction
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transactionToCost styles cost = transactionMapPostings (postingToCost styles cost)
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-- | Add inferred equity postings to a 'Transaction' using transaction prices.
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transactionAddInferredEquityPostings :: AccountName -> Transaction -> Transaction
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transactionAddInferredEquityPostings equityAcct t =
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t{tpostings=concatMap (postingAddInferredEquityPostings equityAcct) $ tpostings t}
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-- | Apply some account aliases to all posting account names in the transaction, 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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transactionApplyAliases :: [AccountAlias] -> Transaction -> Either RegexError Transaction
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transactionApplyAliases aliases t =
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case mapM (postingApplyAliases aliases) $ tpostings t of
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Right ps -> Right $ txnTieKnot $ t{tpostings=ps}
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Left err -> Left err
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-- | Apply a transformation to a transaction's postings.
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transactionMapPostings :: (Posting -> Posting) -> Transaction -> Transaction
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transactionMapPostings f t@Transaction{tpostings=ps} = t{tpostings=map f ps}
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-- | Apply a transformation to a transaction's posting amounts.
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transactionMapPostingAmounts :: (MixedAmount -> MixedAmount) -> Transaction -> Transaction
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transactionMapPostingAmounts f = transactionMapPostings (postingTransformAmount f)
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-- | The file path from which this transaction was parsed.
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transactionFile :: Transaction -> FilePath
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transactionFile Transaction{tsourcepos} = sourceName $ fst tsourcepos
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-- tests
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tests_Transaction :: TestTree
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tests_Transaction =
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testGroup "Transaction" [
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testGroup "showPostingLines" [
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testCase "null posting" $ showPostingLines nullposting @?= [" 0"]
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, testCase "non-null posting" $
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let p =
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posting
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{ pstatus = Cleared
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, paccount = "a"
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, pamount = mixed [usd 1, hrs 2]
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, pcomment = "pcomment1\npcomment2\n tag3: val3 \n"
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, ptype = RegularPosting
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, ptags = [("ptag1", "val1"), ("ptag2", "val2")]
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}
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in showPostingLines p @?=
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[ " * a $1.00 ; pcomment1"
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, " ; pcomment2"
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, " ; tag3: val3 "
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, " * a 2.00h ; pcomment1"
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, " ; pcomment2"
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, " ; tag3: val3 "
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]
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]
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, let
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-- one implicit amount
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timp = nulltransaction {tpostings = ["a" `post` usd 1, "b" `post` missingamt]}
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-- explicit amounts, balanced
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texp = nulltransaction {tpostings = ["a" `post` usd 1, "b" `post` usd (-1)]}
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-- explicit amount, only one posting
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texp1 = nulltransaction {tpostings = ["(a)" `post` usd 1]}
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-- explicit amounts, two commodities, explicit balancing price
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texp2 = nulltransaction {tpostings = ["a" `post` usd 1, "b" `post` (hrs (-1) `at` usd 1)]}
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-- explicit amounts, two commodities, implicit balancing price
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texp2b = nulltransaction {tpostings = ["a" `post` usd 1, "b" `post` hrs (-1)]}
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-- one missing amount, not the last one
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t3 = nulltransaction {tpostings = ["a" `post` usd 1, "b" `post` missingamt, "c" `post` usd (-1)]}
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-- unbalanced amounts when precision is limited (#931)
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-- t4 = nulltransaction {tpostings = ["a" `post` usd (-0.01), "b" `post` usd (0.005), "c" `post` usd (0.005)]}
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in testGroup "postingsAsLines" [
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testCase "null-transaction" $ postingsAsLines False (tpostings nulltransaction) @?= []
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, testCase "implicit-amount" $ postingsAsLines False (tpostings timp) @?=
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[ " a $1.00"
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, " b" -- implicit amount remains implicit
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]
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, testCase "explicit-amounts" $ postingsAsLines False (tpostings texp) @?=
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[ " a $1.00"
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, " b $-1.00"
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]
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, testCase "one-explicit-amount" $ postingsAsLines False (tpostings texp1) @?=
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[ " (a) $1.00"
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]
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, testCase "explicit-amounts-two-commodities" $ postingsAsLines False (tpostings texp2) @?=
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[ " a $1.00"
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, " b -1.00h @ $1.00"
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]
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, testCase "explicit-amounts-not-explicitly-balanced" $ postingsAsLines False (tpostings texp2b) @?=
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[ " a $1.00"
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, " b -1.00h"
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]
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, testCase "implicit-amount-not-last" $ postingsAsLines False (tpostings t3) @?=
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[" a $1.00", " b", " c $-1.00"]
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-- , testCase "ensure-visibly-balanced" $
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-- in postingsAsLines False (tpostings t4) @?=
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-- [" a $-0.01", " b $0.005", " c $0.005"]
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]
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, testGroup "showTransaction" [
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testCase "null transaction" $ showTransaction nulltransaction @?= "0000-01-01\n\n"
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, testCase "non-null transaction" $ showTransaction
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nulltransaction
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{ tdate = fromGregorian 2012 05 14
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, tdate2 = Just $ fromGregorian 2012 05 15
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, tstatus = Unmarked
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, tcode = "code"
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, tdescription = "desc"
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, tcomment = "tcomment1\ntcomment2\n"
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, ttags = [("ttag1", "val1")]
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, tpostings =
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[ nullposting
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{ pstatus = Cleared
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, paccount = "a"
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, pamount = mixed [usd 1, hrs 2]
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, pcomment = "\npcomment2\n"
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, ptype = RegularPosting
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, ptags = [("ptag1", "val1"), ("ptag2", "val2")]
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}
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]
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} @?=
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T.unlines
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[ "2012-05-14=2012-05-15 (code) desc ; tcomment1"
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, " ; tcomment2"
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, " * a $1.00"
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, " ; pcomment2"
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, " * a 2.00h"
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, " ; pcomment2"
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, ""
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]
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, testCase "show a balanced transaction" $
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(let t =
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Transaction
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0
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""
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nullsourcepos
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(fromGregorian 2007 01 28)
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Nothing
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Unmarked
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""
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"coopportunity"
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""
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[]
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[ posting {paccount = "expenses:food:groceries", pamount = mixedAmount (usd 47.18), ptransaction = Just t}
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, posting {paccount = "assets:checking", pamount = mixedAmount (usd (-47.18)), ptransaction = Just t}
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]
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in showTransaction t) @?=
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(T.unlines
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[ "2007-01-28 coopportunity"
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, " expenses:food:groceries $47.18"
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, " assets:checking $-47.18"
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, ""
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])
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, testCase "show an unbalanced transaction, should not elide" $
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(showTransaction
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(txnTieKnot $
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Transaction
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0
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""
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nullsourcepos
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(fromGregorian 2007 01 28)
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Nothing
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Unmarked
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""
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"coopportunity"
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""
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[]
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[ posting {paccount = "expenses:food:groceries", pamount = mixedAmount (usd 47.18)}
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, posting {paccount = "assets:checking", pamount = mixedAmount (usd (-47.19))}
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])) @?=
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(T.unlines
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[ "2007-01-28 coopportunity"
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, " expenses:food:groceries $47.18"
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, " assets:checking $-47.19"
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, ""
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])
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, testCase "show a transaction with one posting and a missing amount" $
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(showTransaction
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(txnTieKnot $
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Transaction
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0
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""
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nullsourcepos
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(fromGregorian 2007 01 28)
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Nothing
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Unmarked
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""
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"coopportunity"
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""
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[]
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[posting {paccount = "expenses:food:groceries", pamount = missingmixedamt}])) @?=
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(T.unlines ["2007-01-28 coopportunity", " expenses:food:groceries", ""])
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, testCase "show a transaction with a priced commodityless amount" $
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(showTransaction
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(txnTieKnot $
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Transaction
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0
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""
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nullsourcepos
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(fromGregorian 2010 01 01)
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Nothing
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Unmarked
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""
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"x"
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""
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[]
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[ posting {paccount = "a", pamount = mixedAmount $ num 1 `at` (usd 2 `withPrecision` Precision 0)}
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, posting {paccount = "b", pamount = missingmixedamt}
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])) @?=
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(T.unlines ["2010-01-01 x", " a 1 @ $2", " b", ""])
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]
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]
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