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2023-06-18shell/math: code shrinkDenys Vlasenko
function old new delta evaluate_string 1489 1486 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-18shell/math: decrease stack usage by not allocating copies of variable namesDenys Vlasenko
We risk exhaust stack with alloca() with old code. function old new delta arith_apply 990 1023 +33 evaluate_string 1467 1494 +27 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 60/0) Total: 60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-18shell/math: decrease stack usageDenys Vlasenko
function old new delta evaluate_string 1412 1467 +55 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-17shell/math: eliminate some redundant stores on return code pathDenys Vlasenko
function old new delta evaluate_string 1432 1412 -20 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-17shell/math: change ?: nesting code to not have 63 level nesting limitationDenys Vlasenko
function old new delta evaluate_string 1406 1432 +26 arith 36 29 -7 arith_apply 998 990 -8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 26/-15) Total: 11 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-17shell/math.h: update comments, rearrange struct members for smaller codeDenys Vlasenko
function old new delta arith_apply 1000 998 -2 evaluate_string 1414 1406 -8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10) Total: -10 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-17shell/math: code shrinkDenys Vlasenko
function old new delta evaluate_string 1432 1414 -18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-16shell/math: tweka commentsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-16shell/math: fix ?: to not evaluate not-taken branchesDenys Vlasenko
This fixes ash-arith-arith-ternary1/2.tests function old new delta evaluate_string 1271 1432 +161 arith_apply 968 1000 +32 arith 22 36 +14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 207/0) Total: 207 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: simplify handling of unary plusDenys Vlasenko
function old new delta evaluate_string 1257 1271 +14 arith_apply 977 968 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 14/-9) Total: 5 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: explain the logic, small tweak to make code smallerDenys Vlasenko
function old new delta evaluate_string 1258 1257 -1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: fix order of expansion of variables to numbersDenys Vlasenko
This fixes arith-assign-in-varexp1.tests function old new delta evaluate_string 1132 1258 +126 arith_lookup_val 143 - -143 arith_apply 1132 977 -155 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/1 up/down: 126/-298) Total: -172 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: remove special code to handle a?b?c:d:e, it works without it nowDenys Vlasenko
The "hack" to virtually parenthesize ? EXPR : made this unnecessary. The expression is effectively a?(b?(c):d):e and thus b?c:d is evaluated before continuing with the second : function old new delta evaluate_string 1148 1132 -16 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: fix parsing of ?: and explain why it's parsed that wayDenys Vlasenko
This fixes arith-precedence1.tests. This breaks arith-ternary2.tests again (we now evaluate variables on not-taken branches). We need a better logic here anyway: not only bare variables should not evaluate when not-taken: 1 ? eval_me : do_not_eval but any (arbitrarily complex) expressions shouldn't evaluate as well! 1 ? var_is_set=1 : ((var_is_not_set=2,var2*=4)) function old new delta evaluate_string 1097 1148 +51 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-15shell/math: simpler insertion of "fake" last RPARENDenys Vlasenko
Skip one pass through token table, since we know the result. function old new delta evaluate_string 1095 1097 +2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: trivial code shrinkDenys Vlasenko
function old new delta arith_apply 1143 1132 -11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: fix the order of variable resolution in binopsDenys Vlasenko
function old new delta arith_apply 1134 1143 +9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: remove now-unused second_valDenys Vlasenko
function old new delta arith_apply 1137 1134 -3 evaluate_string 1101 1095 -6 arith_lookup_val 150 143 -7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-16) Total: -16 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: fix nested ?: and do not parse variables in not-taken branchDenys Vlasenko
Fixes arith-ternary1.tests and arith-ternary_nested.tests function old new delta evaluate_string 1043 1101 +58 arith_apply 1087 1137 +50 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 108/0) Total: 108 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: remove a redundant checkDenys Vlasenko
function old new delta arith_apply 1134 1087 -47 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-14shell/math: document ternary ?: op's weirdness, add code commentsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-13shell/math: fix one name check, other minor cleanupsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-13shell/math: reduce stack usageDenys Vlasenko
function old new delta arith_apply 1123 1134 +11 arith_lookup_val 140 145 +5 evaluate_string 1053 1047 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 16/-6) Total: 10 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2023-06-12shell: avoid segfault on ${0::0/0~09J}. Closes 15216Denys Vlasenko
function old new delta evaluate_string 1011 1053 +42 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-09-26shell: fix parsing of $(( (v)++ + NUM ))Denys Vlasenko
function old new delta evaluate_string 988 1011 +23 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-09-25shell: fix arithmentic evaluation of "++7" and such (it is + + 7, i.e. 7)Denys Vlasenko
function old new delta evaluate_string 945 988 +43 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01shell: remove FAST_FUNC from a static functionDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-10-22shell: better comments in BASE#nn codeDenys Vlasenko
function old new delta evaluate_string 932 930 -2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-09-22ash: fix BASE###nn bashism for bases 36..64Denys Vlasenko
function old new delta evaluate_string 876 932 +56 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-09-22ash: fix BASE###nn bashism to accept letter 'digits' for bases > 9Denys Vlasenko
function old new delta evaluate_string 873 876 +3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-05-26shell: move all definitions of strto_arith_t() togetherDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-05-19shell: implement optional "BASE#nnnn" numeric literalsDenys Vlasenko
function old new delta evaluate_string 729 851 +122 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-28shell: handle $((NUM++...) like bash does. Closes 10706Denys Vlasenko
function old new delta evaluate_string 680 729 +49 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02do not use `a' quoting style in commentsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-11-20typo fix in commentDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-11-18ash,hush: do not segfault on $((2**63 / -1))Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-26move endofname() to libbbDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-14whitespace cleanup. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-09-17shell/math: better comment. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-16shell/math: deconvolute and explain ?: handling. Give better error messageDenys Vlasenko
function old new delta arith_apply 1271 1283 +12 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-15shell/math: return string error indicator, not integerDenys Vlasenko
function old new delta expand_and_evaluate_arith 87 106 +19 expand_one_var 1563 1570 +7 arith 12 18 +6 evaluate_string 678 680 +2 arith_apply 1269 1271 +2 builtin_umask 133 132 -1 ash_arith 118 75 -43 expand_vars_to_list 1094 1038 -56 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/3 up/down: 36/-100) Total: -64 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-13shell/math.c: stop using bss variableDenys Vlasenko
function old new delta evaluate_string - 678 +678 expand_one_var 1543 1563 +20 builtin_type 114 116 +2 expand_and_evaluate_arith 89 87 -2 prev_chk_var_recursive 4 - -4 ash_arith 122 118 -4 arith_lookup_val 142 132 -10 arith 674 12 -662 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 2/4 up/down: 700/-682) Total: 18 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-13shell/math.c: rename arith_eval_hooks to arith_state, put error code into itDenys Vlasenko
function old new delta expand_and_evaluate_arith 79 89 +10 arith 675 674 -1 arith_lookup_val 151 142 -9 ash_arith 135 122 -13 arith_apply 1304 1269 -35 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/4 up/down: 10/-58) Total: -48 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-13shell/math.c: small code shrink; fixed incomprehensible commentsDenys Vlasenko
function old new delta arith_apply 1334 1304 -30 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-13shell: small code shrinkDenys Vlasenko
function old new delta arith 680 675 -5 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-13shell: shrink arith code; and prepare for returning text error codesDenys Vlasenko
function old new delta arith 701 680 -21 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-07shell: unify endofname() in hush and ashDenys Vlasenko
function old new delta builtin_umask 132 133 +1 changepath 195 194 -1 expand_and_evaluate_arith 77 69 -8 ash_arith 143 135 -8 expand_one_var 1551 1515 -36 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/4 up/down: 1/-53) Total: -52 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-08-16*: make GNU licensing statement forms more regularDenys Vlasenko
This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-01-12hush: use ash's read builtinDenys Vlasenko
function old new delta shell_builtin_read - 1000 +1000 set_local_var_from_halves - 24 +24 setvar2 - 7 +7 ... popstring 140 134 -6 ash_main 1375 1368 -7 setvar 184 174 -10 arith_set_local_var 36 - -36 builtin_read 1096 185 -911 ------------------------------------------------------------------------------ (add/remove: 3/1 grow/shrink: 5/23 up/down: 1038/-1007) Total: 31 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-01-12shell: split read builtin from ashDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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