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1371 lines
51 KiB
Haskell
1371 lines
51 KiB
Haskell
--- * doc
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-- Lines beginning "--- *" are collapsible orgstruct nodes. Emacs users,
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-- (add-hook 'haskell-mode-hook
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-- (lambda () (set-variable 'orgstruct-heading-prefix-regexp "--- " t))
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-- 'orgstruct-mode)
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-- and press TAB on nodes to expand/collapse.
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{-|
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Some common parsers and helpers used by several readers.
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Some of these might belong in Hledger.Read.JournalReader or Hledger.Read.
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-}
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--- * module
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{-# LANGUAGE CPP, BangPatterns, DeriveDataTypeable, RecordWildCards, NamedFieldPuns, NoMonoLocalBinds, ScopedTypeVariables, FlexibleContexts, TupleSections, OverloadedStrings #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE PackageImports #-}
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module Hledger.Read.Common (
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Reader (..),
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InputOpts (..),
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definputopts,
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rawOptsToInputOpts,
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-- * parsing utilities
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runTextParser,
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rtp,
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runJournalParser,
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rjp,
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runErroringJournalParser,
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rejp,
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genericSourcePos,
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journalSourcePos,
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parseAndFinaliseJournal,
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parseAndFinaliseJournal',
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finaliseJournal,
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setYear,
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getYear,
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setDefaultCommodityAndStyle,
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getDefaultCommodityAndStyle,
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getDefaultAmountStyle,
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getAmountStyle,
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addDeclaredAccountType,
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pushParentAccount,
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popParentAccount,
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getParentAccount,
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addAccountAlias,
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getAccountAliases,
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clearAccountAliases,
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journalAddFile,
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-- * parsers
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-- ** transaction bits
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statusp,
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codep,
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descriptionp,
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-- ** dates
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datep,
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datetimep,
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secondarydatep,
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-- ** account names
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modifiedaccountnamep,
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accountnamep,
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-- ** amounts
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spaceandamountormissingp,
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amountp,
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amountp',
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mamountp',
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commoditysymbolp,
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priceamountp,
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balanceassertionp,
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fixedlotpricep,
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numberp,
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fromRawNumber,
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rawnumberp,
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-- ** comments
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multilinecommentp,
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emptyorcommentlinep,
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followingcommentp,
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transactioncommentp,
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postingcommentp,
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-- ** bracketed dates
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bracketeddatetagsp,
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-- ** misc
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singlespacedtextp,
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singlespacedtextsatisfyingp,
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singlespacep,
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-- * tests
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tests_Common,
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)
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where
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--- * imports
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import Prelude ()
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import "base-compat-batteries" Prelude.Compat hiding (fail, readFile)
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import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail (fail)
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import Control.Monad.Except (ExceptT(..), runExceptT, throwError)
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import Control.Monad.State.Strict hiding (fail)
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import Data.Bifunctor (bimap, second)
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import Data.Char
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import Data.Data
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import Data.Decimal (DecimalRaw (Decimal), Decimal)
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import Data.Default
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import Data.Functor.Identity
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import "base-compat-batteries" Data.List.Compat
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import Data.List.NonEmpty (NonEmpty(..))
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import Data.Maybe
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import qualified Data.Map as M
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import qualified Data.Semigroup as Sem
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import Data.Text (Text)
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import qualified Data.Text as T
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import Data.Time.Calendar
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import Data.Time.LocalTime
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import System.Time (getClockTime)
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import Text.Megaparsec
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import Text.Megaparsec.Char
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import Text.Megaparsec.Char.Lexer (decimal)
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import Text.Megaparsec.Custom
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import Hledger.Data
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import Hledger.Utils
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-- $setup
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-- >>> :set -XOverloadedStrings
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-- | A hledger journal reader is a triple of storage format name, a
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-- detector of that format, and a parser from that format to Journal.
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data Reader = Reader {
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-- The canonical name of the format handled by this reader
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rFormat :: StorageFormat
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-- The file extensions recognised as containing this format
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,rExtensions :: [String]
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-- A text parser for this format, accepting input options, file
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-- path for error messages and file contents, producing an exception-raising IO
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-- action that returns a journal or error message.
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,rParser :: InputOpts -> FilePath -> Text -> ExceptT String IO Journal
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-- Experimental readers are never tried automatically.
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,rExperimental :: Bool
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}
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instance Show Reader where show r = rFormat r ++ " reader"
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-- $setup
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-- | Various options to use when reading journal files.
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-- Similar to CliOptions.inputflags, simplifies the journal-reading functions.
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data InputOpts = InputOpts {
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-- files_ :: [FilePath]
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mformat_ :: Maybe StorageFormat -- ^ a file/storage format to try, unless overridden
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-- by a filename prefix. Nothing means try all.
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,mrules_file_ :: Maybe FilePath -- ^ a conversion rules file to use (when reading CSV)
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,separator_ :: Char -- ^ the separator to use (when reading CSV)
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,aliases_ :: [String] -- ^ account name aliases to apply
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,anon_ :: Bool -- ^ do light anonymisation/obfuscation of the data
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,ignore_assertions_ :: Bool -- ^ don't check balance assertions
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,new_ :: Bool -- ^ read only new transactions since this file was last read
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,new_save_ :: Bool -- ^ save latest new transactions state for next time
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,pivot_ :: String -- ^ use the given field's value as the account name
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,auto_ :: Bool -- ^ generate automatic postings when journal is parsed
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} deriving (Show, Data) --, Typeable)
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instance Default InputOpts where def = definputopts
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definputopts :: InputOpts
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definputopts = InputOpts def def ',' def def def def True def def
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rawOptsToInputOpts :: RawOpts -> InputOpts
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rawOptsToInputOpts rawopts = InputOpts{
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-- files_ = listofstringopt "file" rawopts
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mformat_ = Nothing
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,mrules_file_ = maybestringopt "rules-file" rawopts
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,separator_ = fromMaybe ',' (maybecharopt "separator" rawopts)
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,aliases_ = listofstringopt "alias" rawopts
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,anon_ = boolopt "anon" rawopts
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,ignore_assertions_ = boolopt "ignore-assertions" rawopts
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,new_ = boolopt "new" rawopts
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,new_save_ = True
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,pivot_ = stringopt "pivot" rawopts
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,auto_ = boolopt "auto" rawopts
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}
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--- * parsing utilities
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-- | Run a text parser in the identity monad. See also: parseWithState.
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runTextParser, rtp
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:: TextParser Identity a -> Text -> Either (ParseErrorBundle Text CustomErr) a
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runTextParser p t = runParser p "" t
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rtp = runTextParser
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-- | Run a journal parser in some monad. See also: parseWithState.
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runJournalParser, rjp
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:: Monad m
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=> JournalParser m a -> Text -> m (Either (ParseErrorBundle Text CustomErr) a)
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runJournalParser p t = runParserT (evalStateT p mempty) "" t
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rjp = runJournalParser
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-- | Run an erroring journal parser in some monad. See also: parseWithState.
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runErroringJournalParser, rejp
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:: Monad m
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=> ErroringJournalParser m a
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-> Text
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-> m (Either FinalParseError (Either (ParseErrorBundle Text CustomErr) a))
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runErroringJournalParser p t =
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runExceptT $ runParserT (evalStateT p mempty) "" t
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rejp = runErroringJournalParser
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genericSourcePos :: SourcePos -> GenericSourcePos
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genericSourcePos p = GenericSourcePos (sourceName p) (fromIntegral . unPos $ sourceLine p) (fromIntegral . unPos $ sourceColumn p)
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-- | Construct a generic start & end line parse position from start and end megaparsec SourcePos's.
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journalSourcePos :: SourcePos -> SourcePos -> GenericSourcePos
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journalSourcePos p p' = JournalSourcePos (sourceName p) (fromIntegral . unPos $ sourceLine p, fromIntegral $ line')
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where line'
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| (unPos $ sourceColumn p') == 1 = unPos (sourceLine p') - 1
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| otherwise = unPos $ sourceLine p' -- might be at end of file withat last new-line
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-- | Given a megaparsec ParsedJournal parser, input options, file
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-- path and file content: parse and finalise a Journal, or give an error.
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parseAndFinaliseJournal :: ErroringJournalParser IO ParsedJournal -> InputOpts
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-> FilePath -> Text -> ExceptT String IO Journal
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parseAndFinaliseJournal parser iopts f txt = do
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y <- liftIO getCurrentYear
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let initJournal = nulljournal{ jparsedefaultyear = Just y, jincludefilestack = [f] }
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eep <- liftIO $ runExceptT $ runParserT (evalStateT parser initJournal) f txt
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-- TODO: urgh.. clean this up somehow
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case eep of
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Left finalParseError -> throwError $ finalErrorBundlePretty $ attachSource f txt finalParseError
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Right ep -> case ep of
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Left e -> throwError $ customErrorBundlePretty e
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Right pj -> finaliseJournal iopts f txt pj
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-- | Like parseAndFinaliseJournal but takes a (non-Erroring) JournalParser.
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-- Used for timeclock/timedot.
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-- TODO: get rid of this, use parseAndFinaliseJournal instead
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parseAndFinaliseJournal' :: JournalParser IO ParsedJournal -> InputOpts
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-> FilePath -> Text -> ExceptT String IO Journal
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parseAndFinaliseJournal' parser iopts f txt = do
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y <- liftIO getCurrentYear
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let initJournal = nulljournal
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{ jparsedefaultyear = Just y
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, jincludefilestack = [f] }
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ep <- liftIO $ runParserT (evalStateT parser initJournal) f txt
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-- see notes above
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case ep of
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Left e -> throwError $ customErrorBundlePretty e
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Right pj -> finaliseJournal iopts f txt pj
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-- | Post-process a Journal that has just been parsed or generated, in this order:
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--
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-- - apply canonical amount styles,
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--
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-- - save misc info and reverse transactions into their original parse order,
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--
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-- - evaluate balance assignments and balance each transaction,
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--
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-- - apply transaction modifiers (auto postings) if enabled,
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--
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-- - check balance assertions if enabled.
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--
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finaliseJournal :: InputOpts -> FilePath -> Text -> Journal -> ExceptT String IO Journal
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finaliseJournal iopts f txt pj = do
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t <- liftIO getClockTime
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-- Infer and apply canonical styles for each commodity (or fail).
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-- TODO: since #903's refactoring for hledger 1.12,
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-- journalApplyCommodityStyles here is seeing the
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-- transactions before they get reversesd to normal order.
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case journalApplyCommodityStyles pj of
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Left e -> throwError e
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Right pj' ->
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-- Finalise the parsed journal.
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let fj =
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if auto_ iopts && (not . null . jtxnmodifiers) pj
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then
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-- When automatic postings are active, we finalise twice:
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-- once before and once after. However, if we are running it
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-- twice, we don't check assertions the first time (they might
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-- be false pending modifiers) and we don't reorder the second
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-- time. If we are only running once, we reorder and follow
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-- the options for checking assertions.
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--
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-- first pass, doing most of the work
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(
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(journalModifyTransactions <$>) $ -- add auto postings after balancing ? #893b fails
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journalBalanceTransactions False $ -- balance transactions without checking assertions
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-- journalModifyTransactions <$> -- add auto postings before balancing ? probably #893a, #928, #938 fail
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journalReverse $
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journalSetLastReadTime t $
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journalAddFile (f, txt) $
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pj')
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-- balance transactions a second time, now just checking balance assertions
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>>= (\j ->
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journalBalanceTransactions (not $ ignore_assertions_ iopts) $
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j)
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else
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-- automatic postings are not active
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journalBalanceTransactions (not $ ignore_assertions_ iopts) $
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journalReverse $
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journalSetLastReadTime t $
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journalAddFile (f, txt) $
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pj'
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in
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case fj of
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Left e -> throwError e
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Right j -> return j
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setYear :: Year -> JournalParser m ()
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setYear y = modify' (\j -> j{jparsedefaultyear=Just y})
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getYear :: JournalParser m (Maybe Year)
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getYear = fmap jparsedefaultyear get
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setDefaultCommodityAndStyle :: (CommoditySymbol,AmountStyle) -> JournalParser m ()
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setDefaultCommodityAndStyle cs = modify' (\j -> j{jparsedefaultcommodity=Just cs})
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getDefaultCommodityAndStyle :: JournalParser m (Maybe (CommoditySymbol,AmountStyle))
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getDefaultCommodityAndStyle = jparsedefaultcommodity `fmap` get
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-- | Get amount style associated with default currency.
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--
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-- Returns 'AmountStyle' used to defined by a latest default commodity directive
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-- prior to current position within this file or its parents.
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getDefaultAmountStyle :: JournalParser m (Maybe AmountStyle)
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getDefaultAmountStyle = fmap snd <$> getDefaultCommodityAndStyle
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-- | Lookup currency-specific amount style.
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--
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-- Returns 'AmountStyle' used in commodity directive within current journal
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-- prior to current position or in its parents files.
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getAmountStyle :: CommoditySymbol -> JournalParser m (Maybe AmountStyle)
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getAmountStyle commodity = do
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specificStyle <- maybe Nothing cformat . M.lookup commodity . jcommodities <$> get
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defaultStyle <- fmap snd <$> getDefaultCommodityAndStyle
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let effectiveStyle = listToMaybe $ catMaybes [specificStyle, defaultStyle]
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return effectiveStyle
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addDeclaredAccountType :: AccountName -> AccountType -> JournalParser m ()
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addDeclaredAccountType acct atype =
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modify' (\j -> j{jdeclaredaccounttypes = M.insertWith (++) atype [acct] (jdeclaredaccounttypes j)})
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pushParentAccount :: AccountName -> JournalParser m ()
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pushParentAccount acct = modify' (\j -> j{jparseparentaccounts = acct : jparseparentaccounts j})
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popParentAccount :: JournalParser m ()
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popParentAccount = do
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j <- get
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case jparseparentaccounts j of
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[] -> unexpected (Tokens ('E' :| "nd of apply account block with no beginning"))
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(_:rest) -> put j{jparseparentaccounts=rest}
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getParentAccount :: JournalParser m AccountName
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getParentAccount = fmap (concatAccountNames . reverse . jparseparentaccounts) get
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addAccountAlias :: MonadState Journal m => AccountAlias -> m ()
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addAccountAlias a = modify' (\(j@Journal{..}) -> j{jparsealiases=a:jparsealiases})
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getAccountAliases :: MonadState Journal m => m [AccountAlias]
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getAccountAliases = fmap jparsealiases get
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clearAccountAliases :: MonadState Journal m => m ()
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clearAccountAliases = modify' (\(j@Journal{..}) -> j{jparsealiases=[]})
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-- getTransactionCount :: MonadState Journal m => m Integer
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-- getTransactionCount = fmap jparsetransactioncount get
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--
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-- setTransactionCount :: MonadState Journal m => Integer -> m ()
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-- setTransactionCount i = modify' (\j -> j{jparsetransactioncount=i})
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--
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-- -- | Increment the transaction index by one and return the new value.
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-- incrementTransactionCount :: MonadState Journal m => m Integer
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-- incrementTransactionCount = do
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-- modify' (\j -> j{jparsetransactioncount=jparsetransactioncount j + 1})
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-- getTransactionCount
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journalAddFile :: (FilePath,Text) -> Journal -> Journal
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journalAddFile f j@Journal{jfiles=fs} = j{jfiles=fs++[f]}
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-- append, unlike the other fields, even though we do a final reverse,
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-- to compensate for additional reversal due to including/monoid-concatting
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--- * parsers
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--- ** transaction bits
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statusp :: TextParser m Status
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statusp =
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choice'
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[ skipMany spacenonewline >> char '*' >> return Cleared
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, skipMany spacenonewline >> char '!' >> return Pending
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, return Unmarked
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]
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codep :: TextParser m Text
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codep = option "" $ do
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try $ do
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skipSome spacenonewline
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char '('
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code <- takeWhileP Nothing $ \c -> c /= ')' && c /= '\n'
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char ')' <?> "closing bracket ')' for transaction code"
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pure code
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descriptionp :: TextParser m Text
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descriptionp = takeWhileP Nothing (not . semicolonOrNewline)
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where semicolonOrNewline c = c == ';' || c == '\n'
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--- ** dates
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-- | Parse a date in YYYY/MM/DD format.
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-- Hyphen (-) and period (.) are also allowed as separators.
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-- The year may be omitted if a default year has been set.
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-- Leading zeroes may be omitted.
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datep :: JournalParser m Day
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datep = do
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mYear <- getYear
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lift $ datep' mYear
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datep' :: Maybe Year -> TextParser m Day
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datep' mYear = do
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startOffset <- getOffset
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d1 <- decimal <?> "year or month"
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sep <- satisfy isDateSepChar <?> "date separator"
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d2 <- decimal <?> "month or day"
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fullDate startOffset d1 sep d2 <|> partialDate startOffset mYear d1 sep d2
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<?> "full or partial date"
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where
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fullDate :: Int -> Integer -> Char -> Int -> TextParser m Day
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fullDate startOffset year sep1 month = do
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sep2 <- satisfy isDateSepChar <?> "date separator"
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day <- decimal <?> "day"
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endOffset <- getOffset
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let dateStr = show year ++ [sep1] ++ show month ++ [sep2] ++ show day
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when (sep1 /= sep2) $ customFailure $ parseErrorAtRegion startOffset endOffset $
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"invalid date (mixing date separators is not allowed): " ++ dateStr
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case fromGregorianValid year month day of
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Nothing -> customFailure $ parseErrorAtRegion startOffset endOffset $
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"well-formed but invalid date: " ++ dateStr
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Just date -> pure $! date
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partialDate
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:: Int -> Maybe Year -> Integer -> Char -> Int -> TextParser m Day
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partialDate startOffset mYear month sep day = do
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endOffset <- getOffset
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case mYear of
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Just year ->
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case fromGregorianValid year (fromIntegral month) day of
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Nothing -> customFailure $ parseErrorAtRegion startOffset endOffset $
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"well-formed but invalid date: " ++ dateStr
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Just date -> pure $! date
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where dateStr = show year ++ [sep] ++ show month ++ [sep] ++ show day
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Nothing -> customFailure $ parseErrorAtRegion startOffset endOffset $
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"partial date "++dateStr++" found, but the current year is unknown"
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where dateStr = show month ++ [sep] ++ show day
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{-# INLINABLE datep' #-}
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-- | Parse a date and time in YYYY/MM/DD HH:MM[:SS][+-ZZZZ] format.
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-- Hyphen (-) and period (.) are also allowed as date separators.
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-- The year may be omitted if a default year has been set.
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-- Seconds are optional.
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-- The timezone is optional and ignored (the time is always interpreted as a local time).
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-- Leading zeroes may be omitted (except in a timezone).
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datetimep :: JournalParser m LocalTime
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datetimep = do
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mYear <- getYear
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lift $ datetimep' mYear
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datetimep' :: Maybe Year -> TextParser m LocalTime
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datetimep' mYear = do
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day <- datep' mYear
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skipSome spacenonewline
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time <- timeOfDay
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optional timeZone -- ignoring time zones
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pure $ LocalTime day time
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||
|
||
where
|
||
timeOfDay :: TextParser m TimeOfDay
|
||
timeOfDay = do
|
||
off1 <- getOffset
|
||
h' <- twoDigitDecimal <?> "hour"
|
||
off2 <- getOffset
|
||
unless (h' >= 0 && h' <= 23) $ customFailure $
|
||
parseErrorAtRegion off1 off2 "invalid time (bad hour)"
|
||
|
||
char ':' <?> "':' (hour-minute separator)"
|
||
off3 <- getOffset
|
||
m' <- twoDigitDecimal <?> "minute"
|
||
off4 <- getOffset
|
||
unless (m' >= 0 && m' <= 59) $ customFailure $
|
||
parseErrorAtRegion off3 off4 "invalid time (bad minute)"
|
||
|
||
s' <- option 0 $ do
|
||
char ':' <?> "':' (minute-second separator)"
|
||
off5 <- getOffset
|
||
s' <- twoDigitDecimal <?> "second"
|
||
off6 <- getOffset
|
||
unless (s' >= 0 && s' <= 59) $ customFailure $
|
||
parseErrorAtRegion off5 off6 "invalid time (bad second)"
|
||
-- we do not support leap seconds
|
||
pure s'
|
||
|
||
pure $ TimeOfDay h' m' (fromIntegral s')
|
||
|
||
twoDigitDecimal :: TextParser m Int
|
||
twoDigitDecimal = do
|
||
d1 <- digitToInt <$> digitChar
|
||
d2 <- digitToInt <$> (digitChar <?> "a second digit")
|
||
pure $ d1*10 + d2
|
||
|
||
timeZone :: TextParser m String
|
||
timeZone = do
|
||
plusminus <- satisfy $ \c -> c == '-' || c == '+'
|
||
fourDigits <- count 4 (digitChar <?> "a digit (for a time zone)")
|
||
pure $ plusminus:fourDigits
|
||
|
||
secondarydatep :: Day -> TextParser m Day
|
||
secondarydatep primaryDate = char '=' *> datep' (Just primaryYear)
|
||
where primaryYear = first3 $ toGregorian primaryDate
|
||
|
||
--- ** account names
|
||
|
||
-- | Parse an account name (plus one following space if present),
|
||
-- then apply any parent account prefix and/or account aliases currently in effect,
|
||
-- in that order. (Ie first add the parent account prefix, then rewrite with aliases).
|
||
modifiedaccountnamep :: JournalParser m AccountName
|
||
modifiedaccountnamep = do
|
||
parent <- getParentAccount
|
||
aliases <- getAccountAliases
|
||
a <- lift accountnamep
|
||
return $!
|
||
accountNameApplyAliases aliases $
|
||
-- XXX accountNameApplyAliasesMemo ? doesn't seem to make a difference (retest that function)
|
||
joinAccountNames parent
|
||
a
|
||
|
||
-- | Parse an account name, plus one following space if present.
|
||
-- Account names have one or more parts separated by the account separator character,
|
||
-- and are terminated by two or more spaces (or end of input).
|
||
-- Each part is at least one character long, may have single spaces inside it,
|
||
-- and starts with a non-whitespace.
|
||
-- Note, this means "{account}", "%^!" and ";comment" are all accepted
|
||
-- (parent parsers usually prevent/consume the last).
|
||
-- It should have required parts to start with an alphanumeric;
|
||
-- for now it remains as-is for backwards compatibility.
|
||
accountnamep :: TextParser m AccountName
|
||
accountnamep = singlespacedtextp
|
||
|
||
|
||
-- | Parse any text beginning with a non-whitespace character, until a
|
||
-- double space or the end of input.
|
||
singlespacedtextp :: TextParser m T.Text
|
||
singlespacedtextp = singlespacedtextsatisfyingp (const True)
|
||
|
||
-- | Similar to 'singlespacedtextp', except that the text must only contain
|
||
-- characters satisfying the given predicate.
|
||
singlespacedtextsatisfyingp :: (Char -> Bool) -> TextParser m T.Text
|
||
singlespacedtextsatisfyingp pred = do
|
||
firstPart <- partp
|
||
otherParts <- many $ try $ singlespacep *> partp
|
||
pure $! T.unwords $ firstPart : otherParts
|
||
where
|
||
partp = takeWhile1P Nothing (\c -> pred c && not (isSpace c))
|
||
|
||
-- | Parse one non-newline whitespace character that is not followed by another one.
|
||
singlespacep :: TextParser m ()
|
||
singlespacep = void spacenonewline *> notFollowedBy spacenonewline
|
||
|
||
--- ** amounts
|
||
|
||
-- | Parse whitespace then an amount, with an optional left or right
|
||
-- currency symbol and optional price, or return the special
|
||
-- "missing" marker amount.
|
||
spaceandamountormissingp :: JournalParser m MixedAmount
|
||
spaceandamountormissingp =
|
||
option missingmixedamt $ try $ do
|
||
lift $ skipSome spacenonewline
|
||
Mixed . (:[]) <$> amountp
|
||
|
||
-- | Parse a single-commodity amount, with optional symbol on the left or
|
||
-- right, optional unit or total price, and optional (ignored)
|
||
-- ledger-style balance assertion or fixed lot price declaration.
|
||
amountp :: JournalParser m Amount
|
||
amountp = label "amount" $ do
|
||
amount <- amountwithoutpricep
|
||
lift $ skipMany spacenonewline
|
||
mprice <- priceamountp
|
||
pure $ amount { aprice = mprice }
|
||
|
||
amountwithoutpricep :: JournalParser m Amount
|
||
amountwithoutpricep = do
|
||
(mult, sign) <- lift $ (,) <$> multiplierp <*> signp
|
||
leftsymbolamountp mult sign <|> rightornosymbolamountp mult sign
|
||
|
||
where
|
||
|
||
leftsymbolamountp :: Bool -> (Decimal -> Decimal) -> JournalParser m Amount
|
||
leftsymbolamountp mult sign = label "amount" $ do
|
||
c <- lift commoditysymbolp
|
||
suggestedStyle <- getAmountStyle c
|
||
commodityspaced <- lift $ skipMany' spacenonewline
|
||
sign2 <- lift $ signp
|
||
offBeforeNum <- getOffset
|
||
ambiguousRawNum <- lift rawnumberp
|
||
mExponent <- lift $ optional $ try exponentp
|
||
offAfterNum <- getOffset
|
||
let numRegion = (offBeforeNum, offAfterNum)
|
||
(q,prec,mdec,mgrps) <- lift $ interpretNumber numRegion suggestedStyle ambiguousRawNum mExponent
|
||
let s = amountstyle{ascommodityside=L, ascommodityspaced=commodityspaced, asprecision=prec, asdecimalpoint=mdec, asdigitgroups=mgrps}
|
||
return $ nullamt{acommodity=c, aquantity=sign (sign2 q), aismultiplier=mult, astyle=s, aprice=Nothing}
|
||
|
||
rightornosymbolamountp :: Bool -> (Decimal -> Decimal) -> JournalParser m Amount
|
||
rightornosymbolamountp mult sign = label "amount" $ do
|
||
offBeforeNum <- getOffset
|
||
ambiguousRawNum <- lift rawnumberp
|
||
mExponent <- lift $ optional $ try exponentp
|
||
offAfterNum <- getOffset
|
||
let numRegion = (offBeforeNum, offAfterNum)
|
||
mSpaceAndCommodity <- lift $ optional $ try $ (,) <$> skipMany' spacenonewline <*> commoditysymbolp
|
||
case mSpaceAndCommodity of
|
||
-- right symbol amount
|
||
Just (commodityspaced, c) -> do
|
||
suggestedStyle <- getAmountStyle c
|
||
(q,prec,mdec,mgrps) <- lift $ interpretNumber numRegion suggestedStyle ambiguousRawNum mExponent
|
||
let s = amountstyle{ascommodityside=R, ascommodityspaced=commodityspaced, asprecision=prec, asdecimalpoint=mdec, asdigitgroups=mgrps}
|
||
return $ nullamt{acommodity=c, aquantity=sign q, aismultiplier=mult, astyle=s, aprice=Nothing}
|
||
-- no symbol amount
|
||
Nothing -> do
|
||
suggestedStyle <- getDefaultAmountStyle
|
||
(q,prec,mdec,mgrps) <- lift $ interpretNumber numRegion suggestedStyle ambiguousRawNum mExponent
|
||
-- if a default commodity has been set, apply it and its style to this amount
|
||
-- (unless it's a multiplier in an automated posting)
|
||
defcs <- getDefaultCommodityAndStyle
|
||
let (c,s) = case (mult, defcs) of
|
||
(False, Just (defc,defs)) -> (defc, defs{asprecision=max (asprecision defs) prec})
|
||
_ -> ("", amountstyle{asprecision=prec, asdecimalpoint=mdec, asdigitgroups=mgrps})
|
||
return $ nullamt{acommodity=c, aquantity=sign q, aismultiplier=mult, astyle=s, aprice=Nothing}
|
||
|
||
-- For reducing code duplication. Doesn't parse anything. Has the type
|
||
-- of a parser only in order to throw parse errors (for convenience).
|
||
interpretNumber
|
||
:: (Int, Int) -- offsets
|
||
-> Maybe AmountStyle
|
||
-> Either AmbiguousNumber RawNumber
|
||
-> Maybe Int
|
||
-> TextParser m (Quantity, Int, Maybe Char, Maybe DigitGroupStyle)
|
||
interpretNumber posRegion suggestedStyle ambiguousNum mExp =
|
||
let rawNum = either (disambiguateNumber suggestedStyle) id ambiguousNum
|
||
in case fromRawNumber rawNum mExp of
|
||
Left errMsg -> customFailure $
|
||
uncurry parseErrorAtRegion posRegion errMsg
|
||
Right res -> pure res
|
||
|
||
-- | Parse an amount from a string, or get an error.
|
||
amountp' :: String -> Amount
|
||
amountp' s =
|
||
case runParser (evalStateT (amountp <* eof) mempty) "" (T.pack s) of
|
||
Right amt -> amt
|
||
Left err -> error' $ show err -- XXX should throwError
|
||
|
||
-- | Parse a mixed amount from a string, or get an error.
|
||
mamountp' :: String -> MixedAmount
|
||
mamountp' = Mixed . (:[]) . amountp'
|
||
|
||
signp :: Num a => TextParser m (a -> a)
|
||
signp = char '-' *> pure negate <|> char '+' *> pure id <|> pure id
|
||
|
||
multiplierp :: TextParser m Bool
|
||
multiplierp = option False $ char '*' *> pure True
|
||
|
||
-- | This is like skipMany but it returns True if at least one element
|
||
-- was skipped. This is helpful if you’re just using many to check if
|
||
-- the resulting list is empty or not.
|
||
skipMany' :: MonadPlus m => m a -> m Bool
|
||
skipMany' p = go False
|
||
where
|
||
go !isNull = do
|
||
more <- option False (True <$ p)
|
||
if more
|
||
then go True
|
||
else pure isNull
|
||
|
||
commoditysymbolp :: TextParser m CommoditySymbol
|
||
commoditysymbolp =
|
||
quotedcommoditysymbolp <|> simplecommoditysymbolp <?> "commodity symbol"
|
||
|
||
quotedcommoditysymbolp :: TextParser m CommoditySymbol
|
||
quotedcommoditysymbolp =
|
||
between (char '"') (char '"') $ takeWhile1P Nothing f
|
||
where f c = c /= ';' && c /= '\n' && c /= '\"'
|
||
|
||
simplecommoditysymbolp :: TextParser m CommoditySymbol
|
||
simplecommoditysymbolp = takeWhile1P Nothing (not . isNonsimpleCommodityChar)
|
||
|
||
priceamountp :: JournalParser m (Maybe AmountPrice)
|
||
priceamountp = option Nothing $ do
|
||
char '@'
|
||
priceConstructor <- char '@' *> pure TotalPrice <|> pure UnitPrice
|
||
|
||
lift (skipMany spacenonewline)
|
||
priceAmount <- amountwithoutpricep <?> "unpriced amount (specifying a price)"
|
||
|
||
pure $ Just $ priceConstructor priceAmount
|
||
|
||
balanceassertionp :: JournalParser m BalanceAssertion
|
||
balanceassertionp = do
|
||
sourcepos <- genericSourcePos <$> lift getSourcePos
|
||
char '='
|
||
istotal <- fmap isJust $ optional $ try $ char '='
|
||
isinclusive <- fmap isJust $ optional $ try $ char '*'
|
||
lift (skipMany spacenonewline)
|
||
-- this amount can have a price; balance assertions ignore it,
|
||
-- but balance assignments will use it
|
||
a <- amountp <?> "amount (for a balance assertion or assignment)"
|
||
return BalanceAssertion
|
||
{ baamount = a
|
||
, batotal = istotal
|
||
, bainclusive = isinclusive
|
||
, baposition = sourcepos
|
||
}
|
||
|
||
-- Parse a Ledger-style fixed lot price: {=PRICE}
|
||
-- https://www.ledger-cli.org/3.0/doc/ledger3.html#Fixing-Lot-Prices .
|
||
-- Currently we ignore these (hledger's @ PRICE is equivalent),
|
||
-- and we don't parse a Ledger-style {PRICE} (equivalent to Ledger's @ PRICE).
|
||
fixedlotpricep :: JournalParser m (Maybe Amount)
|
||
fixedlotpricep = optional $ do
|
||
try $ do
|
||
lift (skipMany spacenonewline)
|
||
char '{'
|
||
lift (skipMany spacenonewline)
|
||
char '='
|
||
lift (skipMany spacenonewline)
|
||
a <- amountwithoutpricep <?> "unpriced amount (for an ignored ledger-style fixed lot price)"
|
||
lift (skipMany spacenonewline)
|
||
char '}'
|
||
return a
|
||
|
||
-- | Parse a string representation of a number for its value and display
|
||
-- attributes.
|
||
--
|
||
-- Some international number formats are accepted, eg either period or comma
|
||
-- may be used for the decimal point, and the other of these may be used for
|
||
-- separating digit groups in the integer part. See
|
||
-- http://en.wikipedia.org/wiki/Decimal_separator for more examples.
|
||
--
|
||
-- This returns: the parsed numeric value, the precision (number of digits
|
||
-- seen following the decimal point), the decimal point character used if any,
|
||
-- and the digit group style if any.
|
||
--
|
||
numberp :: Maybe AmountStyle -> TextParser m (Quantity, Int, Maybe Char, Maybe DigitGroupStyle)
|
||
numberp suggestedStyle = label "number" $ do
|
||
-- a number is an optional sign followed by a sequence of digits possibly
|
||
-- interspersed with periods, commas, or both
|
||
-- dbgparse 0 "numberp"
|
||
sign <- signp
|
||
rawNum <- either (disambiguateNumber suggestedStyle) id <$> rawnumberp
|
||
mExp <- optional $ try $ exponentp
|
||
dbg8 "numberp suggestedStyle" suggestedStyle `seq` return ()
|
||
case dbg8 "numberp quantity,precision,mdecimalpoint,mgrps"
|
||
$ fromRawNumber rawNum mExp of
|
||
Left errMsg -> Fail.fail errMsg
|
||
Right (q, p, d, g) -> pure (sign q, p, d, g)
|
||
|
||
exponentp :: TextParser m Int
|
||
exponentp = char' 'e' *> signp <*> decimal <?> "exponent"
|
||
|
||
-- | Interpret a raw number as a decimal number.
|
||
--
|
||
-- Returns:
|
||
-- - the decimal number
|
||
-- - the precision (number of digits after the decimal point)
|
||
-- - the decimal point character, if any
|
||
-- - the digit group style, if any (digit group character and sizes of digit groups)
|
||
fromRawNumber
|
||
:: RawNumber
|
||
-> Maybe Int
|
||
-> Either String
|
||
(Quantity, Int, Maybe Char, Maybe DigitGroupStyle)
|
||
fromRawNumber raw mExp = case raw of
|
||
|
||
NoSeparators digitGrp mDecimals ->
|
||
let mDecPt = fmap fst mDecimals
|
||
decimalGrp = maybe mempty snd mDecimals
|
||
|
||
(quantity, precision) =
|
||
maybe id applyExp mExp $ toQuantity digitGrp decimalGrp
|
||
|
||
in Right (quantity, precision, mDecPt, Nothing)
|
||
|
||
WithSeparators digitSep digitGrps mDecimals -> case mExp of
|
||
Nothing ->
|
||
let mDecPt = fmap fst mDecimals
|
||
decimalGrp = maybe mempty snd mDecimals
|
||
digitGroupStyle = DigitGroups digitSep (groupSizes digitGrps)
|
||
|
||
(quantity, precision) = toQuantity (mconcat digitGrps) decimalGrp
|
||
|
||
in Right (quantity, precision, mDecPt, Just digitGroupStyle)
|
||
Just _ -> Left
|
||
"invalid number: mixing digit separators with exponents is not allowed"
|
||
|
||
where
|
||
-- Outputs digit group sizes from least significant to most significant
|
||
groupSizes :: [DigitGrp] -> [Int]
|
||
groupSizes digitGrps = reverse $ case map digitGroupLength digitGrps of
|
||
(a:b:cs) | a < b -> b:cs
|
||
gs -> gs
|
||
|
||
toQuantity :: DigitGrp -> DigitGrp -> (Quantity, Int)
|
||
toQuantity preDecimalGrp postDecimalGrp = (quantity, precision)
|
||
where
|
||
quantity = Decimal (fromIntegral precision)
|
||
(digitGroupNumber $ preDecimalGrp <> postDecimalGrp)
|
||
precision = digitGroupLength postDecimalGrp
|
||
|
||
applyExp :: Int -> (Decimal, Int) -> (Decimal, Int)
|
||
applyExp exponent (quantity, precision) =
|
||
(quantity * 10^^exponent, max 0 (precision - exponent))
|
||
|
||
|
||
disambiguateNumber :: Maybe AmountStyle -> AmbiguousNumber -> RawNumber
|
||
disambiguateNumber suggestedStyle (AmbiguousNumber grp1 sep grp2) =
|
||
-- If present, use the suggested style to disambiguate;
|
||
-- otherwise, assume that the separator is a decimal point where possible.
|
||
if isDecimalPointChar sep &&
|
||
maybe True (sep `isValidDecimalBy`) suggestedStyle
|
||
then NoSeparators grp1 (Just (sep, grp2))
|
||
else WithSeparators sep [grp1, grp2] Nothing
|
||
where
|
||
isValidDecimalBy :: Char -> AmountStyle -> Bool
|
||
isValidDecimalBy c = \case
|
||
AmountStyle{asdecimalpoint = Just d} -> d == c
|
||
AmountStyle{asdigitgroups = Just (DigitGroups g _)} -> g /= c
|
||
AmountStyle{asprecision = 0} -> False
|
||
_ -> True
|
||
|
||
-- | Parse and interpret the structure of a number without external hints.
|
||
-- Numbers are digit strings, possibly separated into digit groups by one
|
||
-- of two types of separators. (1) Numbers may optionally have a decimal
|
||
-- mark, which may be either a period or comma. (2) Numbers may
|
||
-- optionally contain digit group marks, which must all be either a
|
||
-- period, a comma, or a space.
|
||
--
|
||
-- It is our task to deduce the characters used as decimal mark and
|
||
-- digit group mark, based on the allowed syntax. For instance, we
|
||
-- make use of the fact that a decimal mark can occur at most once and
|
||
-- must be to the right of all digit group marks.
|
||
--
|
||
-- >>> parseTest rawnumberp "1,234,567.89"
|
||
-- Right (WithSeparators ',' ["1","234","567"] (Just ('.',"89")))
|
||
-- >>> parseTest rawnumberp "1,000"
|
||
-- Left (AmbiguousNumber "1" ',' "000")
|
||
-- >>> parseTest rawnumberp "1 000"
|
||
-- Right (WithSeparators ' ' ["1","000"] Nothing)
|
||
--
|
||
rawnumberp :: TextParser m (Either AmbiguousNumber RawNumber)
|
||
rawnumberp = label "number" $ do
|
||
rawNumber <- fmap Right leadingDecimalPt <|> leadingDigits
|
||
|
||
-- Guard against mistyped numbers
|
||
mExtraDecimalSep <- optional $ lookAhead $ satisfy isDecimalPointChar
|
||
when (isJust mExtraDecimalSep) $
|
||
Fail.fail "invalid number (invalid use of separator)"
|
||
|
||
mExtraFragment <- optional $ lookAhead $ try $
|
||
char ' ' *> getOffset <* digitChar
|
||
case mExtraFragment of
|
||
Just off -> customFailure $
|
||
parseErrorAt off "invalid number (excessive trailing digits)"
|
||
Nothing -> pure ()
|
||
|
||
return $ dbg8 "rawnumberp" rawNumber
|
||
where
|
||
|
||
leadingDecimalPt :: TextParser m RawNumber
|
||
leadingDecimalPt = do
|
||
decPt <- satisfy isDecimalPointChar
|
||
decGrp <- digitgroupp
|
||
pure $ NoSeparators mempty (Just (decPt, decGrp))
|
||
|
||
leadingDigits :: TextParser m (Either AmbiguousNumber RawNumber)
|
||
leadingDigits = do
|
||
grp1 <- digitgroupp
|
||
withSeparators grp1 <|> fmap Right (trailingDecimalPt grp1)
|
||
<|> pure (Right $ NoSeparators grp1 Nothing)
|
||
|
||
withSeparators :: DigitGrp -> TextParser m (Either AmbiguousNumber RawNumber)
|
||
withSeparators grp1 = do
|
||
(sep, grp2) <- try $ (,) <$> satisfy isDigitSeparatorChar <*> digitgroupp
|
||
grps <- many $ try $ char sep *> digitgroupp
|
||
|
||
let digitGroups = grp1 : grp2 : grps
|
||
fmap Right (withDecimalPt sep digitGroups)
|
||
<|> pure (withoutDecimalPt grp1 sep grp2 grps)
|
||
|
||
withDecimalPt :: Char -> [DigitGrp] -> TextParser m RawNumber
|
||
withDecimalPt digitSep digitGroups = do
|
||
decPt <- satisfy $ \c -> isDecimalPointChar c && c /= digitSep
|
||
decDigitGrp <- option mempty digitgroupp
|
||
|
||
pure $ WithSeparators digitSep digitGroups (Just (decPt, decDigitGrp))
|
||
|
||
withoutDecimalPt
|
||
:: DigitGrp
|
||
-> Char
|
||
-> DigitGrp
|
||
-> [DigitGrp]
|
||
-> Either AmbiguousNumber RawNumber
|
||
withoutDecimalPt grp1 sep grp2 grps
|
||
| null grps && isDecimalPointChar sep =
|
||
Left $ AmbiguousNumber grp1 sep grp2
|
||
| otherwise = Right $ WithSeparators sep (grp1:grp2:grps) Nothing
|
||
|
||
trailingDecimalPt :: DigitGrp -> TextParser m RawNumber
|
||
trailingDecimalPt grp1 = do
|
||
decPt <- satisfy isDecimalPointChar
|
||
pure $ NoSeparators grp1 (Just (decPt, mempty))
|
||
|
||
|
||
isDecimalPointChar :: Char -> Bool
|
||
isDecimalPointChar c = c == '.' || c == ','
|
||
|
||
isDigitSeparatorChar :: Char -> Bool
|
||
isDigitSeparatorChar c = isDecimalPointChar c || c == ' '
|
||
|
||
-- | Some kinds of number literal we might parse.
|
||
data RawNumber
|
||
= NoSeparators DigitGrp (Maybe (Char, DigitGrp))
|
||
-- ^ A number with no digit group marks (eg 100),
|
||
-- or with a leading or trailing comma or period
|
||
-- which (apparently) we interpret as a decimal mark (like 100. or .100)
|
||
| WithSeparators Char [DigitGrp] (Maybe (Char, DigitGrp))
|
||
-- ^ A number with identifiable digit group marks
|
||
-- (eg 1,000,000 or 1,000.50 or 1 000)
|
||
deriving (Show, Eq)
|
||
|
||
-- | Another kind of number literal: this one contains either a digit
|
||
-- group separator or a decimal mark, we're not sure which (eg 1,000 or 100.50).
|
||
data AmbiguousNumber = AmbiguousNumber DigitGrp Char DigitGrp
|
||
deriving (Show, Eq)
|
||
|
||
-- | Description of a single digit group in a number literal.
|
||
-- "Thousands" is one well known digit grouping, but there are others.
|
||
data DigitGrp = DigitGrp {
|
||
digitGroupLength :: !Int, -- ^ The number of digits in this group.
|
||
digitGroupNumber :: !Integer -- ^ The natural number formed by this group's digits.
|
||
} deriving (Eq)
|
||
|
||
-- | A custom show instance, showing digit groups as the parser saw them.
|
||
instance Show DigitGrp where
|
||
show (DigitGrp len num)
|
||
| len > 0 = "\"" ++ padding ++ numStr ++ "\""
|
||
| otherwise = "\"\""
|
||
where numStr = show num
|
||
padding = replicate (len - length numStr) '0'
|
||
|
||
instance Sem.Semigroup DigitGrp where
|
||
DigitGrp l1 n1 <> DigitGrp l2 n2 = DigitGrp (l1 + l2) (n1 * 10^l2 + n2)
|
||
|
||
instance Monoid DigitGrp where
|
||
mempty = DigitGrp 0 0
|
||
mappend = (Sem.<>)
|
||
|
||
digitgroupp :: TextParser m DigitGrp
|
||
digitgroupp = label "digits"
|
||
$ makeGroup <$> takeWhile1P (Just "digit") isDigit
|
||
where
|
||
makeGroup = uncurry DigitGrp . foldl' step (0, 0) . T.unpack
|
||
step (!l, !a) c = (l+1, a*10 + fromIntegral (digitToInt c))
|
||
|
||
--- ** comments
|
||
|
||
multilinecommentp :: TextParser m ()
|
||
multilinecommentp = startComment *> anyLine `skipManyTill` endComment
|
||
where
|
||
startComment = string "comment" *> trailingSpaces
|
||
endComment = eof <|> string "end comment" *> trailingSpaces
|
||
|
||
trailingSpaces = skipMany spacenonewline <* newline
|
||
anyLine = void $ takeWhileP Nothing (\c -> c /= '\n') *> newline
|
||
|
||
{-# INLINABLE multilinecommentp #-}
|
||
|
||
emptyorcommentlinep :: TextParser m ()
|
||
emptyorcommentlinep = do
|
||
skipMany spacenonewline
|
||
skiplinecommentp <|> void newline
|
||
where
|
||
-- A line (file-level) comment can start with a semicolon, hash, or star
|
||
-- (allowing org nodes).
|
||
skiplinecommentp :: TextParser m ()
|
||
skiplinecommentp = do
|
||
satisfy $ \c -> c == ';' || c == '#' || c == '*'
|
||
void $ takeWhileP Nothing (\c -> c /= '\n')
|
||
optional newline
|
||
pure ()
|
||
|
||
{-# INLINABLE emptyorcommentlinep #-}
|
||
|
||
-- A parser combinator for parsing (possibly multiline) comments
|
||
-- following journal items.
|
||
--
|
||
-- Several journal items may be followed by comments, which begin with
|
||
-- semicolons and extend to the end of the line. Such comments may span
|
||
-- multiple lines, but comment lines below the journal item must be
|
||
-- preceeded by leading whitespace.
|
||
--
|
||
-- This parser combinator accepts a parser that consumes all input up
|
||
-- until the next newline. This parser should extract the "content" from
|
||
-- comments. The resulting parser returns this content plus the raw text
|
||
-- of the comment itself.
|
||
--
|
||
-- See followingcommentp for tests.
|
||
--
|
||
followingcommentp' :: (Monoid a, Show a) => TextParser m a -> TextParser m (Text, a)
|
||
followingcommentp' contentp = do
|
||
skipMany spacenonewline
|
||
-- there can be 0 or 1 sameLine
|
||
sameLine <- try headerp *> ((:[]) <$> match' contentp) <|> pure []
|
||
_ <- eolof
|
||
-- there can be 0 or more nextLines
|
||
nextLines <- many $
|
||
try (skipSome spacenonewline *> headerp) *> match' contentp <* eolof
|
||
let
|
||
-- if there's just a next-line comment, insert an empty same-line comment
|
||
-- so the next-line comment doesn't get rendered as a same-line comment.
|
||
sameLine' | null sameLine && not (null nextLines) = [("",mempty)]
|
||
| otherwise = sameLine
|
||
(texts, contents) = unzip $ sameLine' ++ nextLines
|
||
strippedCommentText = T.unlines $ map T.strip texts
|
||
commentContent = mconcat contents
|
||
pure (strippedCommentText, commentContent)
|
||
|
||
where
|
||
headerp = char ';' *> skipMany spacenonewline
|
||
|
||
{-# INLINABLE followingcommentp' #-}
|
||
|
||
-- | Parse the text of a (possibly multiline) comment following a journal item.
|
||
--
|
||
-- >>> rtp followingcommentp "" -- no comment
|
||
-- Right ""
|
||
-- >>> rtp followingcommentp ";" -- just a (empty) same-line comment. newline is added
|
||
-- Right "\n"
|
||
-- >>> rtp followingcommentp "; \n"
|
||
-- Right "\n"
|
||
-- >>> rtp followingcommentp ";\n ;\n" -- a same-line and a next-line comment
|
||
-- Right "\n\n"
|
||
-- >>> rtp followingcommentp "\n ;\n" -- just a next-line comment. Insert an empty same-line comment so the next-line comment doesn't become a same-line comment.
|
||
-- Right "\n\n"
|
||
--
|
||
followingcommentp :: TextParser m Text
|
||
followingcommentp =
|
||
fst <$> followingcommentp' (void $ takeWhileP Nothing (/= '\n'))
|
||
{-# INLINABLE followingcommentp #-}
|
||
|
||
|
||
-- | Parse a transaction comment and extract its tags.
|
||
--
|
||
-- The first line of a transaction may be followed by comments, which
|
||
-- begin with semicolons and extend to the end of the line. Transaction
|
||
-- comments may span multiple lines, but comment lines below the
|
||
-- transaction must be preceeded by leading whitespace.
|
||
--
|
||
-- 2000/1/1 ; a transaction comment starting on the same line ...
|
||
-- ; extending to the next line
|
||
-- account1 $1
|
||
-- account2
|
||
--
|
||
-- Tags are name-value pairs.
|
||
--
|
||
-- >>> let getTags (_,tags) = tags
|
||
-- >>> let parseTags = fmap getTags . rtp transactioncommentp
|
||
--
|
||
-- >>> parseTags "; name1: val1, name2:all this is value2"
|
||
-- Right [("name1","val1"),("name2","all this is value2")]
|
||
--
|
||
-- A tag's name must be immediately followed by a colon, without
|
||
-- separating whitespace. The corresponding value consists of all the text
|
||
-- following the colon up until the next colon or newline, stripped of
|
||
-- leading and trailing whitespace.
|
||
--
|
||
transactioncommentp :: TextParser m (Text, [Tag])
|
||
transactioncommentp = followingcommentp' commenttagsp
|
||
{-# INLINABLE transactioncommentp #-}
|
||
|
||
commenttagsp :: TextParser m [Tag]
|
||
commenttagsp = do
|
||
tagName <- fmap (last . T.split isSpace)
|
||
$ takeWhileP Nothing (\c -> c /= ':' && c /= '\n')
|
||
atColon tagName <|> pure [] -- if not ':', then either '\n' or EOF
|
||
|
||
where
|
||
atColon :: Text -> TextParser m [Tag]
|
||
atColon name = char ':' *> do
|
||
if T.null name
|
||
then commenttagsp
|
||
else do
|
||
skipMany spacenonewline
|
||
val <- tagValue
|
||
let tag = (name, val)
|
||
(tag:) <$> commenttagsp
|
||
|
||
tagValue :: TextParser m Text
|
||
tagValue = do
|
||
val <- T.strip <$> takeWhileP Nothing (\c -> c /= ',' && c /= '\n')
|
||
_ <- optional $ char ','
|
||
pure val
|
||
|
||
{-# INLINABLE commenttagsp #-}
|
||
|
||
|
||
-- | Parse a posting comment and extract its tags and dates.
|
||
--
|
||
-- Postings may be followed by comments, which begin with semicolons and
|
||
-- extend to the end of the line. Posting comments may span multiple
|
||
-- lines, but comment lines below the posting must be preceeded by
|
||
-- leading whitespace.
|
||
--
|
||
-- 2000/1/1
|
||
-- account1 $1 ; a posting comment starting on the same line ...
|
||
-- ; extending to the next line
|
||
--
|
||
-- account2
|
||
-- ; a posting comment beginning on the next line
|
||
--
|
||
-- Tags are name-value pairs.
|
||
--
|
||
-- >>> let getTags (_,tags,_,_) = tags
|
||
-- >>> let parseTags = fmap getTags . rtp (postingcommentp Nothing)
|
||
--
|
||
-- >>> parseTags "; name1: val1, name2:all this is value2"
|
||
-- Right [("name1","val1"),("name2","all this is value2")]
|
||
--
|
||
-- A tag's name must be immediately followed by a colon, without
|
||
-- separating whitespace. The corresponding value consists of all the text
|
||
-- following the colon up until the next colon or newline, stripped of
|
||
-- leading and trailing whitespace.
|
||
--
|
||
-- Posting dates may be expressed with "date"/"date2" tags or with
|
||
-- bracketed date syntax. Posting dates will inherit their year from the
|
||
-- transaction date if the year is not specified. We throw parse errors on
|
||
-- invalid dates.
|
||
--
|
||
-- >>> let getDates (_,_,d1,d2) = (d1, d2)
|
||
-- >>> let parseDates = fmap getDates . rtp (postingcommentp (Just 2000))
|
||
--
|
||
-- >>> parseDates "; date: 1/2, date2: 1999/12/31"
|
||
-- Right (Just 2000-01-02,Just 1999-12-31)
|
||
-- >>> parseDates "; [1/2=1999/12/31]"
|
||
-- Right (Just 2000-01-02,Just 1999-12-31)
|
||
--
|
||
-- Example: tags, date tags, and bracketed dates
|
||
-- >>> rtp (postingcommentp (Just 2000)) "; a:b, date:3/4, [=5/6]"
|
||
-- Right ("a:b, date:3/4, [=5/6]\n",[("a","b"),("date","3/4")],Just 2000-03-04,Just 2000-05-06)
|
||
--
|
||
-- Example: extraction of dates from date tags ignores trailing text
|
||
-- >>> rtp (postingcommentp (Just 2000)) "; date:3/4=5/6"
|
||
-- Right ("date:3/4=5/6\n",[("date","3/4=5/6")],Just 2000-03-04,Nothing)
|
||
--
|
||
postingcommentp
|
||
:: Maybe Year -> TextParser m (Text, [Tag], Maybe Day, Maybe Day)
|
||
postingcommentp mYear = do
|
||
(commentText, (tags, dateTags)) <-
|
||
followingcommentp' (commenttagsanddatesp mYear)
|
||
let mdate = fmap snd $ find ((=="date") .fst) dateTags
|
||
mdate2 = fmap snd $ find ((=="date2").fst) dateTags
|
||
pure (commentText, tags, mdate, mdate2)
|
||
{-# INLINABLE postingcommentp #-}
|
||
|
||
|
||
commenttagsanddatesp
|
||
:: Maybe Year -> TextParser m ([Tag], [DateTag])
|
||
commenttagsanddatesp mYear = do
|
||
(txt, dateTags) <- match $ readUpTo ':'
|
||
-- next char is either ':' or '\n' (or EOF)
|
||
let tagName = last (T.split isSpace txt)
|
||
(fmap.second) (dateTags++) (atColon tagName) <|> pure ([], dateTags) -- if not ':', then either '\n' or EOF
|
||
|
||
where
|
||
readUpTo :: Char -> TextParser m [DateTag]
|
||
readUpTo end = do
|
||
void $ takeWhileP Nothing (\c -> c /= end && c /= '\n' && c /= '[')
|
||
-- if not '[' then ':' or '\n' or EOF
|
||
atBracket (readUpTo end) <|> pure []
|
||
|
||
atBracket :: TextParser m [DateTag] -> TextParser m [DateTag]
|
||
atBracket cont = do
|
||
-- Uses the fact that bracketed date-tags cannot contain newlines
|
||
dateTags <- option [] $ lookAhead (bracketeddatetagsp mYear)
|
||
_ <- char '['
|
||
dateTags' <- cont
|
||
pure $ dateTags ++ dateTags'
|
||
|
||
atColon :: Text -> TextParser m ([Tag], [DateTag])
|
||
atColon name = char ':' *> do
|
||
skipMany spacenonewline
|
||
(tags, dateTags) <- case name of
|
||
"" -> pure ([], [])
|
||
"date" -> dateValue name
|
||
"date2" -> dateValue name
|
||
_ -> tagValue name
|
||
_ <- optional $ char ','
|
||
bimap (tags++) (dateTags++) <$> commenttagsanddatesp mYear
|
||
|
||
dateValue :: Text -> TextParser m ([Tag], [DateTag])
|
||
dateValue name = do
|
||
(txt, (date, dateTags)) <- match' $ do
|
||
date <- datep' mYear
|
||
dateTags <- readUpTo ','
|
||
pure (date, dateTags)
|
||
let val = T.strip txt
|
||
pure $ ( [(name, val)]
|
||
, (name, date) : dateTags )
|
||
|
||
tagValue :: Text -> TextParser m ([Tag], [DateTag])
|
||
tagValue name = do
|
||
(txt, dateTags) <- match' $ readUpTo ','
|
||
let val = T.strip txt
|
||
pure $ ( [(name, val)]
|
||
, dateTags )
|
||
|
||
{-# INLINABLE commenttagsanddatesp #-}
|
||
|
||
|
||
--- ** bracketed dates
|
||
|
||
-- | Parse Ledger-style bracketed posting dates ([DATE=DATE2]), as
|
||
-- "date" and/or "date2" tags. Anything that looks like an attempt at
|
||
-- this (a square-bracketed sequence of 0123456789/-.= containing at
|
||
-- least one digit and one date separator) is also parsed, and will
|
||
-- throw an appropriate error.
|
||
--
|
||
-- The dates are parsed in full here so that errors are reported in
|
||
-- the right position. A missing year in DATE can be inferred if a
|
||
-- default date is provided. A missing year in DATE2 will be inferred
|
||
-- from DATE.
|
||
--
|
||
-- >>> either (Left . customErrorBundlePretty) Right $ rtp (bracketeddatetagsp Nothing) "[2016/1/2=3/4]"
|
||
-- Right [("date",2016-01-02),("date2",2016-03-04)]
|
||
--
|
||
-- >>> either (Left . customErrorBundlePretty) Right $ rtp (bracketeddatetagsp Nothing) "[1]"
|
||
-- Left ...not a bracketed date...
|
||
--
|
||
-- >>> either (Left . customErrorBundlePretty) Right $ rtp (bracketeddatetagsp Nothing) "[2016/1/32]"
|
||
-- Left ...1:2:...well-formed but invalid date: 2016/1/32...
|
||
--
|
||
-- >>> either (Left . customErrorBundlePretty) Right $ rtp (bracketeddatetagsp Nothing) "[1/31]"
|
||
-- Left ...1:2:...partial date 1/31 found, but the current year is unknown...
|
||
--
|
||
-- >>> either (Left . customErrorBundlePretty) Right $ rtp (bracketeddatetagsp Nothing) "[0123456789/-.=/-.=]"
|
||
-- Left ...1:13:...expecting month or day...
|
||
--
|
||
bracketeddatetagsp
|
||
:: Maybe Year -> TextParser m [(TagName, Day)]
|
||
bracketeddatetagsp mYear1 = do
|
||
-- dbgparse 0 "bracketeddatetagsp"
|
||
try $ do
|
||
s <- lookAhead
|
||
$ between (char '[') (char ']')
|
||
$ takeWhile1P Nothing isBracketedDateChar
|
||
unless (T.any isDigit s && T.any isDateSepChar s) $
|
||
Fail.fail "not a bracketed date"
|
||
-- Looks sufficiently like a bracketed date to commit to parsing a date
|
||
|
||
between (char '[') (char ']') $ do
|
||
md1 <- optional $ datep' mYear1
|
||
|
||
let mYear2 = fmap readYear md1 <|> mYear1
|
||
md2 <- optional $ char '=' *> datep' mYear2
|
||
|
||
pure $ catMaybes [("date",) <$> md1, ("date2",) <$> md2]
|
||
|
||
where
|
||
readYear = first3 . toGregorian
|
||
isBracketedDateChar c = isDigit c || isDateSepChar c || c == '='
|
||
|
||
{-# INLINABLE bracketeddatetagsp #-}
|
||
|
||
|
||
--- ** helper parsers
|
||
|
||
-- A version of `match` that is strict in the returned text
|
||
match' :: TextParser m a -> TextParser m (Text, a)
|
||
match' p = do
|
||
(!txt, p) <- match p
|
||
pure (txt, p)
|
||
|
||
--- * tests
|
||
|
||
tests_Common = tests "Common" [
|
||
|
||
tests "amountp" [
|
||
test "basic" $ expectParseEq amountp "$47.18" (usd 47.18)
|
||
,test "ends with decimal mark" $ expectParseEq amountp "$1." (usd 1 `withPrecision` 0)
|
||
,test "unit price" $ expectParseEq amountp "$10 @ €0.5"
|
||
-- not precise enough:
|
||
-- (usd 10 `withPrecision` 0 `at` (eur 0.5 `withPrecision` 1)) -- `withStyle` asdecimalpoint=Just '.'
|
||
amount{
|
||
acommodity="$"
|
||
,aquantity=10 -- need to test internal precision with roundTo ? I think not
|
||
,astyle=amountstyle{asprecision=0, asdecimalpoint=Nothing}
|
||
,aprice=Just $ UnitPrice $
|
||
amount{
|
||
acommodity="€"
|
||
,aquantity=0.5
|
||
,astyle=amountstyle{asprecision=1, asdecimalpoint=Just '.'}
|
||
}
|
||
}
|
||
,test "total price" $ expectParseEq amountp "$10 @@ €5"
|
||
amount{
|
||
acommodity="$"
|
||
,aquantity=10
|
||
,astyle=amountstyle{asprecision=0, asdecimalpoint=Nothing}
|
||
,aprice=Just $ TotalPrice $
|
||
amount{
|
||
acommodity="€"
|
||
,aquantity=5
|
||
,astyle=amountstyle{asprecision=0, asdecimalpoint=Nothing}
|
||
}
|
||
}
|
||
]
|
||
|
||
,let p = lift (numberp Nothing) :: JournalParser IO (Quantity, Int, Maybe Char, Maybe DigitGroupStyle) in
|
||
tests "numberp" [
|
||
test "." $ expectParseEq p "0" (0, 0, Nothing, Nothing)
|
||
,test "." $ expectParseEq p "1" (1, 0, Nothing, Nothing)
|
||
,test "." $ expectParseEq p "1.1" (1.1, 1, Just '.', Nothing)
|
||
,test "." $ expectParseEq p "1,000.1" (1000.1, 1, Just '.', Just $ DigitGroups ',' [3])
|
||
,test "." $ expectParseEq p "1.00.000,1" (100000.1, 1, Just ',', Just $ DigitGroups '.' [3,2])
|
||
,test "." $ expectParseEq p "1,000,000" (1000000, 0, Nothing, Just $ DigitGroups ',' [3,3]) -- could be simplified to [3]
|
||
,test "." $ expectParseEq p "1." (1, 0, Just '.', Nothing)
|
||
,test "." $ expectParseEq p "1," (1, 0, Just ',', Nothing)
|
||
,test "." $ expectParseEq p ".1" (0.1, 1, Just '.', Nothing)
|
||
,test "." $ expectParseEq p ",1" (0.1, 1, Just ',', Nothing)
|
||
,test "." $ expectParseError p "" ""
|
||
,test "." $ expectParseError p "1,000.000,1" ""
|
||
,test "." $ expectParseError p "1.000,000.1" ""
|
||
,test "." $ expectParseError p "1,000.000.1" ""
|
||
,test "." $ expectParseError p "1,,1" ""
|
||
,test "." $ expectParseError p "1..1" ""
|
||
,test "." $ expectParseError p ".1," ""
|
||
,test "." $ expectParseError p ",1." ""
|
||
]
|
||
|
||
,tests "spaceandamountormissingp" [
|
||
test "space and amount" $ expectParseEq spaceandamountormissingp " $47.18" (Mixed [usd 47.18])
|
||
,test "empty string" $ expectParseEq spaceandamountormissingp "" missingmixedamt
|
||
,_test "just space" $ expectParseEq spaceandamountormissingp " " missingmixedamt -- XXX should it ?
|
||
-- ,test "just amount" $ expectParseError spaceandamountormissingp "$47.18" "" -- succeeds, consuming nothing
|
||
]
|
||
|
||
]
|