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130 lines
4.2 KiB
Haskell
130 lines
4.2 KiB
Haskell
{-|
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A 'Ledger' is derived from a 'Journal' by applying a filter specification
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to select 'Transaction's and 'Posting's of interest. It contains the
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filtered journal and knows the resulting chart of accounts, account
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balances, and postings in each account.
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-}
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module Hledger.Data.Ledger
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where
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import Data.Map (Map, findWithDefault, fromList)
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import Hledger.Data.Utils
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import Hledger.Data.Types
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import Hledger.Data.Account (nullacct)
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import Hledger.Data.AccountName
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import Hledger.Data.Journal
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import Hledger.Data.Posting
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instance Show Ledger where
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show l = printf "Ledger with %d transactions, %d accounts\n%s"
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(length (jtxns $ journal l) +
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length (jmodifiertxns $ journal l) +
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length (jperiodictxns $ journal l))
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(length $ accountnames l)
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(showtree $ accountnametree l)
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nullledger :: Ledger
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nullledger = Ledger{
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journal = nulljournal,
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accountnametree = nullaccountnametree,
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accountmap = fromList []
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}
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-- | Filter a journal's transactions as specified, and then process them
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-- to derive a ledger containing all balances, the chart of accounts,
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-- canonicalised commodities etc.
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journalToLedger :: FilterSpec -> Journal -> Ledger
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journalToLedger fs j = nullledger{journal=j',accountnametree=t,accountmap=m}
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where j' = filterJournalPostings fs{depth=Nothing} j
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(t, m) = journalAccountInfo j'
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-- | List a ledger's account names.
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ledgerAccountNames :: Ledger -> [AccountName]
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ledgerAccountNames = drop 1 . flatten . accountnametree
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-- | Get the named account from a ledger.
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ledgerAccount :: Ledger -> AccountName -> Account
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ledgerAccount l a = findWithDefault nullacct a $ accountmap l
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-- | List a ledger's accounts, in tree order
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ledgerAccounts :: Ledger -> [Account]
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ledgerAccounts = drop 1 . flatten . ledgerAccountTree 9999
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-- | List a ledger's top-level accounts, in tree order
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ledgerTopAccounts :: Ledger -> [Account]
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ledgerTopAccounts = map root . branches . ledgerAccountTree 9999
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-- | Accounts in ledger whose name matches the pattern, in tree order.
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ledgerAccountsMatching :: [String] -> Ledger -> [Account]
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ledgerAccountsMatching pats = filter (matchpats pats . aname) . accounts
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-- | List a ledger account's immediate subaccounts
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ledgerSubAccounts :: Ledger -> Account -> [Account]
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ledgerSubAccounts l Account{aname=a} =
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map (ledgerAccount l) $ filter (`isSubAccountNameOf` a) $ accountnames l
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-- | List a ledger's postings, in the order parsed.
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ledgerPostings :: Ledger -> [Posting]
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ledgerPostings = journalPostings . journal
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-- | Get a ledger's tree of accounts to the specified depth.
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ledgerAccountTree :: Int -> Ledger -> Tree Account
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ledgerAccountTree depth l = treemap (ledgerAccount l) $ treeprune depth $ accountnametree l
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-- | Get a ledger's tree of accounts rooted at the specified account.
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ledgerAccountTreeAt :: Ledger -> Account -> Maybe (Tree Account)
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ledgerAccountTreeAt l acct = subtreeat acct $ ledgerAccountTree 9999 l
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-- | The (fully specified) date span containing all the ledger's (filtered) transactions,
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-- or DateSpan Nothing Nothing if there are none.
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ledgerDateSpan :: Ledger -> DateSpan
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ledgerDateSpan = postingsDateSpan . ledgerPostings
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-- | Convenience aliases.
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accountnames :: Ledger -> [AccountName]
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accountnames = ledgerAccountNames
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account :: Ledger -> AccountName -> Account
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account = ledgerAccount
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accounts :: Ledger -> [Account]
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accounts = ledgerAccounts
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topaccounts :: Ledger -> [Account]
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topaccounts = ledgerTopAccounts
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accountsmatching :: [String] -> Ledger -> [Account]
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accountsmatching = ledgerAccountsMatching
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subaccounts :: Ledger -> Account -> [Account]
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subaccounts = ledgerSubAccounts
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postings :: Ledger -> [Posting]
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postings = ledgerPostings
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commodities :: Ledger -> Map String Commodity
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commodities = journalCanonicalCommodities . journal
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accounttree :: Int -> Ledger -> Tree Account
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accounttree = ledgerAccountTree
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accounttreeat :: Ledger -> Account -> Maybe (Tree Account)
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accounttreeat = ledgerAccountTreeAt
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-- datespan :: Ledger -> DateSpan
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-- datespan = ledgerDateSpan
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rawdatespan :: Ledger -> DateSpan
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rawdatespan = journalDateSpan . journal
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ledgeramounts :: Ledger -> [MixedAmount]
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ledgeramounts = journalAmounts . journal
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tests_Hledger_Data_Ledger = TestList
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[
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]
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