Two new multi-column balance report modes show ending balance per
period: `--cumulative`, starting from 0, and `--historical`, starting
from the historical starting balance.
The balance command's specification has been clarified and consolidated
in the Balance.hs haddock. Reports.hs has also had haddock updates. The
old AccountsReport type is now BalanceReport, still used by
single-column balance report. The new MultiBalanceReport type is used by
the multi-column reports.
This refactoring fixes an O(n^2) slowdown in the balance command with
large numbers of accounts. It's now speedy, and the implementation is
clearer. To facilitate this, the Account type now represents a tree of
accounts which can easily be traversed up or down (and/or flattened
into a list).
Benchmark on a 2010 macbook:
+-------------------------------------------++--------------+------------+--------+
| || before: | after: | |
| || hledger-0.18 | hledgeropt | ledger |
+===========================================++==============+============+========+
| -f data/100x100x10.journal balance || 0.21 | 0.07 | 0.09 |
| -f data/1000x1000x10.journal balance || 10.13 | 0.47 | 0.62 |
| -f data/1000x10000x10.journal balance || 40.67 | 0.67 | 1.01 |
| -f data/10000x1000x10.journal balance || 15.01 | 3.22 | 2.36 |
| -f data/10000x1000x10.journal balance aa || 4.77 | 4.40 | 2.33 |
+-------------------------------------------++--------------+------------+--------+
- use new query system for command line too, filterspec is no more
- move unit tests near the code they test, run them in bottom up order, add more
- more precise Show instances, used for debugging not ui
Ledger shows only the effective date with --effective, but not vice versa.
print is supposed to be information-preserving so this seems better.
This also fixes the web entries view.
