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| author | Denys Vlasenko | 2020-02-02 23:28:55 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2020-02-02 23:28:55 +0100 |
| commit | bd8b05ba1b0901bbd6a913dfd5186ac7c8beffed (patch) | |
| tree | d4989ed16d4824dc8925042bce8c426bd499df2f /editors/awk.c | |
| parent | 9e2a5668fd38db169d9d91b13089a99df4c9bd37 (diff) | |
| download | busybox-bd8b05ba1b0901bbd6a913dfd5186ac7c8beffed.zip busybox-bd8b05ba1b0901bbd6a913dfd5186ac7c8beffed.tar.gz | |
awk: fix more "length" cases, closes 12486
function old new delta
next_token 808 831 +23
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'editors/awk.c')
| -rw-r--r-- | editors/awk.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/editors/awk.c b/editors/awk.c index f199909..70df2fd 100644 --- a/editors/awk.c +++ b/editors/awk.c @@ -272,7 +272,8 @@ typedef struct tsplitter_s { /* if previous token class is CONCAT1 and next is CONCAT2, concatenation */ /* operator is inserted between them */ #define TC_CONCAT1 (TC_VARIABLE | TC_ARRTERM | TC_SEQTERM \ - | TC_STRING | TC_NUMBER | TC_UOPPOST) + | TC_STRING | TC_NUMBER | TC_UOPPOST \ + | TC_LENGTH) #define TC_CONCAT2 (TC_OPERAND | TC_UOPPRE) #define OF_RES1 0x010000 @@ -1070,8 +1071,10 @@ static uint32_t next_token(uint32_t expected) const uint32_t *ti; if (t_rollback) { + debug_printf_parse("%s: using rolled-back token\n", __func__); t_rollback = FALSE; } else if (concat_inserted) { + debug_printf_parse("%s: using concat-inserted token\n", __func__); concat_inserted = FALSE; t_tclass = save_tclass; t_info = save_info; @@ -1200,7 +1203,11 @@ static uint32_t next_token(uint32_t expected) goto readnext; /* insert concatenation operator when needed */ - if ((ltclass & TC_CONCAT1) && (tc & TC_CONCAT2) && (expected & TC_BINOP)) { + debug_printf_parse("%s: %x %x %x concat_inserted?\n", __func__, + (ltclass & TC_CONCAT1), (tc & TC_CONCAT2), (expected & TC_BINOP)); + if ((ltclass & TC_CONCAT1) && (tc & TC_CONCAT2) && (expected & TC_BINOP) + && !(ltclass == TC_LENGTH && tc == TC_SEQSTART) /* but not for "length(..." */ + ) { concat_inserted = TRUE; save_tclass = tc; save_info = t_info; @@ -1208,6 +1215,7 @@ static uint32_t next_token(uint32_t expected) t_info = OC_CONCAT | SS | P(35); } + debug_printf_parse("%s: t_tclass=tc=%x\n", __func__, t_tclass); t_tclass = tc; } ltclass = t_tclass; @@ -1218,6 +1226,7 @@ static uint32_t next_token(uint32_t expected) EMSG_UNEXP_EOS : EMSG_UNEXP_TOKEN); } + debug_printf_parse("%s: returning, ltclass:%x t_double:%f\n", __func__, ltclass, t_double); return ltclass; #undef concat_inserted #undef save_tclass @@ -1282,7 +1291,7 @@ static node *parse_expr(uint32_t iexp) glptr = NULL; } else if (tc & (TC_BINOP | TC_UOPPOST)) { - debug_printf_parse("%s: TC_BINOP | TC_UOPPOST\n", __func__); + debug_printf_parse("%s: TC_BINOP | TC_UOPPOST tc:%x\n", __func__, tc); /* for binary and postfix-unary operators, jump back over * previous operators with higher priority */ vn = cn; @@ -1387,7 +1396,12 @@ static node *parse_expr(uint32_t iexp) case TC_LENGTH: debug_printf_parse("%s: TC_LENGTH\n", __func__); - next_token(TC_SEQSTART | TC_OPTERM | TC_GRPTERM); + next_token(TC_SEQSTART /* length(...) */ + | TC_OPTERM /* length; (or newline)*/ + | TC_GRPTERM /* length } */ + | TC_BINOPX /* length <op> NUM */ + | TC_COMMA /* print length, 1 */ + ); rollback_token(); if (t_tclass & TC_SEQSTART) { /* It was a "(" token. Handle just like TC_BUILTIN */ |