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awk: code shrink

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function                                             old     new   delta
parse_expr                                           948     945      -3
chain_expr                                            65      62      -3
chain_group                                          655     649      -6
parse_program                                        310     303      -7
rollback_token                                        10       -     -10
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/4 up/down: 0/-29)             Total: -29 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-06-29 03:44:56 +02:00
parent 4f27503a1e
commit 216d3d8ad9
1 changed files with 11 additions and 7 deletions
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18
editors/awk.c
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@ -1300,7 +1300,7 @@ static uint32_t next_token(uint32_t expected)
#undef save_info #undef save_info
} }
static void rollback_token(void) static ALWAYS_INLINE void rollback_token(void)
{ {
t_rollback = TRUE; t_rollback = TRUE;
} }
@ -1474,14 +1474,14 @@ static node *parse_expr(uint32_t term_tc)
case TC_LENGTH: case TC_LENGTH:
debug_printf_parse("%s: TC_LENGTH\n", __func__); debug_printf_parse("%s: TC_LENGTH\n", __func__);
next_token(TC_LPAREN /* length(...) */ tc = next_token(TC_LPAREN /* length(...) */
| TS_OPTERM /* length; (or newline)*/ | TS_OPTERM /* length; (or newline)*/
| TC_GRPTERM /* length } */ | TC_GRPTERM /* length } */
| TC_BINOPX /* length <op> NUM */ | TC_BINOPX /* length <op> NUM */
| TC_COMMA /* print length, 1 */ | TC_COMMA /* print length, 1 */
); );
rollback_token(); rollback_token();
if (t_tclass & TC_LPAREN) { if (tc & TC_LPAREN) {
/* It was a "(" token. Handle just like TC_BUILTIN */ /* It was a "(" token. Handle just like TC_BUILTIN */
cn->l.n = parse_lrparen_list(); cn->l.n = parse_lrparen_list();
} }
@ -1563,19 +1563,23 @@ static void chain_group(void)
if (c & TC_GRPSTART) { if (c & TC_GRPSTART) {
debug_printf_parse("%s: TC_GRPSTART\n", __func__); debug_printf_parse("%s: TC_GRPSTART\n", __func__);
while (next_token(TS_GRPSEQ | TC_GRPTERM) != TC_GRPTERM) { while ((c = next_token(TS_GRPSEQ | TC_GRPTERM)) != TC_GRPTERM) {
debug_printf_parse("%s: !TC_GRPTERM\n", __func__); debug_printf_parse("%s: !TC_GRPTERM\n", __func__);
if (t_tclass & TC_NEWLINE) if (c & TC_NEWLINE)
continue; continue;
rollback_token(); rollback_token();
chain_group(); chain_group();
} }
debug_printf_parse("%s: TC_GRPTERM\n", __func__); debug_printf_parse("%s: TC_GRPTERM\n", __func__);
} else if (c & (TS_OPSEQ | TS_OPTERM)) { return;
}
if (c & (TS_OPSEQ | TS_OPTERM)) {
debug_printf_parse("%s: TS_OPSEQ | TS_OPTERM\n", __func__); debug_printf_parse("%s: TS_OPSEQ | TS_OPTERM\n", __func__);
rollback_token(); rollback_token();
chain_expr(OC_EXEC | Vx); chain_expr(OC_EXEC | Vx);
} else { return;
}
{
/* TS_STATEMNT */ /* TS_STATEMNT */
debug_printf_parse("%s: TS_STATEMNT(?)\n", __func__); debug_printf_parse("%s: TS_STATEMNT(?)\n", __func__);
switch (t_info & OPCLSMASK) { switch (t_info & OPCLSMASK) {