mirrors/busybox
0
0
Fork 0
mirror of https://git.busybox.net/busybox.git synced 2024-11-23 21:53:25 +08:00
Code Issues Packages Projects Releases Wiki Activity

awk: evaluate all, even superfluous function args

Browse Source 
function                                             old     new   delta
evaluate                                            3128    3135      +7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-06-30 12:52:51 +02:00
parent ca9278ee58
commit d7354df169
2 changed files with 19 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
editors/awk.c
View File

@ -2910,7 +2910,7 @@ static var *evaluate(node *op, var *res)
case XC( OC_FUNC ): {
var *tv, *sv_fnargs;
const char *sv_progname;
int nargs1, i;
int nargs, i;
debug_printf_eval("FUNC\n");
@ -2918,17 +2918,22 @@ static var *evaluate(node *op, var *res)
syntax_error(EMSG_UNDEF_FUNC);
/* The body might be empty, still has to eval the args */
nargs1 = op->r.f->nargs + 1;
tv = nvalloc(nargs1);
nargs = op->r.f->nargs;
tv = nvalloc(nargs);
i = 0;
while (op1) {
//TODO: explain why one iteration is done even for the case p->r.f->nargs == 0
var *arg = evaluate(nextarg(&op1), v1);
if (i == nargs) {
/* call with more arguments than function takes.
* (gawk warns: "warning: function 'f' called with more arguments than declared").
* They are still evaluated, but discarded: */
clrvar(arg);
continue;
}
copyvar(&tv[i], arg);
tv[i].type |= VF_CHILD;
tv[i].x.parent = arg;
if (++i >= op->r.f->nargs)
break;
i++;
}
sv_fnargs = fnargs;
@ -2936,7 +2941,7 @@ static var *evaluate(node *op, var *res)
fnargs = tv;
res = evaluate(op->r.f->body.first, res);
nvfree(fnargs, nargs1);
nvfree(fnargs, nargs);
g_progname = sv_progname;
fnargs = sv_fnargs;

8
testsuite/awk.tests
View File

@ -87,11 +87,17 @@ BEGIN {
a=2
print v (a)
}'
testing "'v (a)' is not a function call, it is a concatenation" \
testing "awk 'v (a)' is not a function call, it is a concatenation" \
"awk '$prg' 2>&1" \
"12\n" \
"" ""
prg='func f(){print"F"};func g(){print"G"};BEGIN{f(g(),g())}'
testing "awk unused function args are evaluated" \
"awk '$prg' 2>&1" \
"G\nG\nF\n" \
"" ""
optional DESKTOP
testing "awk hex const 1" "awk '{ print or(0xffffffff,1) }'" "4294967295\n" "" "\n"