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patch 9.1.0652: too many strlen() calls in syntax.c

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Problem:  too many strlen() calls in syntax.c
Solution: refactor code to reduce the number or strlen() calls,
          get rid of un-used SYN_NAMELEN macro
          (John Marriott)

closes: #15368

Signed-off-by: John Marriott <basilisk@internode.on.net>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
John Marriott
2024-08-01 23:01:25 +02:00
committed by Christian Brabandt
parent 0214680a8e
commit b4ea77185c
2 changed files with 69 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

115
src/syntax.c
View File

@@ -15,8 +15,6 @@
#if defined(FEAT_SYN_HL) || defined(PROTO) #if defined(FEAT_SYN_HL) || defined(PROTO)
#define SYN_NAMELEN 50 // maximum length of a syntax name
// different types of offsets that are possible // different types of offsets that are possible
#define SPO_MS_OFF 0 // match start offset #define SPO_MS_OFF 0 // match start offset
#define SPO_ME_OFF 1 // match end offset #define SPO_ME_OFF 1 // match end offset
@@ -323,6 +321,7 @@ static void limit_pos_zero(lpos_T *pos, lpos_T *limit);
static void syn_add_end_off(lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra); static void syn_add_end_off(lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra);
static void syn_add_start_off(lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra); static void syn_add_start_off(lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra);
static char_u *syn_getcurline(void); static char_u *syn_getcurline(void);
static colnr_T syn_getcurline_len(void);
static int syn_regexec(regmmatch_T *rmp, linenr_T lnum, colnr_T col, syn_time_T *st); static int syn_regexec(regmmatch_T *rmp, linenr_T lnum, colnr_T col, syn_time_T *st);
static int check_keyword_id(char_u *line, int startcol, int *endcol, long *flags, short **next_list, stateitem_T *cur_si, int *ccharp); static int check_keyword_id(char_u *line, int startcol, int *endcol, long *flags, short **next_list, stateitem_T *cur_si, int *ccharp);
static void syn_remove_pattern(synblock_T *block, int idx); static void syn_remove_pattern(synblock_T *block, int idx);
@@ -2692,7 +2691,7 @@ update_si_end(
// a "oneline" never continues in the next line // a "oneline" never continues in the next line
sip->si_ends = TRUE; sip->si_ends = TRUE;
sip->si_m_endpos.lnum = current_lnum; sip->si_m_endpos.lnum = current_lnum;
sip->si_m_endpos.col = (colnr_T)STRLEN(syn_getcurline()); sip->si_m_endpos.col = syn_getcurline_len();
} }
else else
{ {
@@ -3129,6 +3128,15 @@ syn_getcurline(void)
return ml_get_buf(syn_buf, current_lnum, FALSE); return ml_get_buf(syn_buf, current_lnum, FALSE);
} }
/*
* Get length of current line in syntax buffer.
*/
static colnr_T
syn_getcurline_len(void)
{
return ml_get_buf_len(syn_buf, current_lnum);
}
/* /*
* Call vim_regexec() to find a match with "rmp" in "syn_buf". * Call vim_regexec() to find a match with "rmp" in "syn_buf".
* Returns TRUE when there is a match. * Returns TRUE when there is a match.
@@ -3935,13 +3943,7 @@ syn_match_msg(void)
static int last_matchgroup; static int last_matchgroup;
struct name_list static void syn_list_flags(keyvalue_T *nlist, int nr_entries, int flags, int attr);
{
int flag;
char *name;
};
static void syn_list_flags(struct name_list *nl, int flags, int attr);
/* /*
* List one syntax item, for ":syntax" or "syntax list syntax_name". * List one syntax item, for ":syntax" or "syntax list syntax_name".
@@ -3956,28 +3958,27 @@ syn_list_one(
int idx; int idx;
int did_header = FALSE; int did_header = FALSE;
synpat_T *spp; synpat_T *spp;
static struct name_list namelist1[] = static keyvalue_T namelist1[] =
{ {
{HL_DISPLAY, "display"}, KEYVALUE_ENTRY(HL_DISPLAY, "display"),
{HL_CONTAINED, "contained"}, KEYVALUE_ENTRY(HL_CONTAINED, "contained"),
{HL_ONELINE, "oneline"}, KEYVALUE_ENTRY(HL_ONELINE, "oneline"),
{HL_KEEPEND, "keepend"}, KEYVALUE_ENTRY(HL_KEEPEND, "keepend"),
{HL_EXTEND, "extend"}, KEYVALUE_ENTRY(HL_EXTEND, "extend"),
{HL_EXCLUDENL, "excludenl"}, KEYVALUE_ENTRY(HL_EXCLUDENL, "excludenl"),
{HL_TRANSP, "transparent"}, KEYVALUE_ENTRY(HL_TRANSP, "transparent"),
{HL_FOLD, "fold"}, KEYVALUE_ENTRY(HL_FOLD, "fold")
#ifdef FEAT_CONCEAL #ifdef FEAT_CONCEAL
{HL_CONCEAL, "conceal"}, ,
{HL_CONCEALENDS, "concealends"}, KEYVALUE_ENTRY(HL_CONCEAL, "conceal"),
KEYVALUE_ENTRY(HL_CONCEALENDS, "concealends")
#endif #endif
{0, NULL}
}; };
static struct name_list namelist2[] = static keyvalue_T namelist2[] =
{ {
{HL_SKIPWHITE, "skipwhite"}, KEYVALUE_ENTRY(HL_SKIPWHITE, "skipwhite"),
{HL_SKIPNL, "skipnl"}, KEYVALUE_ENTRY(HL_SKIPNL, "skipnl"),
{HL_SKIPEMPTY, "skipempty"}, KEYVALUE_ENTRY(HL_SKIPEMPTY, "skipempty")
{0, NULL}
}; };
attr = HL_ATTR(HLF_D); // highlight like directories attr = HL_ATTR(HLF_D); // highlight like directories
@@ -4017,7 +4018,7 @@ syn_list_one(
--idx; --idx;
msg_putchar(' '); msg_putchar(' ');
} }
syn_list_flags(namelist1, spp->sp_flags, attr); syn_list_flags(namelist1, (int)ARRAY_LENGTH(namelist1), spp->sp_flags, attr);
if (spp->sp_cont_list != NULL) if (spp->sp_cont_list != NULL)
put_id_list((char_u *)"contains", spp->sp_cont_list, attr); put_id_list((char_u *)"contains", spp->sp_cont_list, attr);
@@ -4029,7 +4030,7 @@ syn_list_one(
if (spp->sp_next_list != NULL) if (spp->sp_next_list != NULL)
{ {
put_id_list((char_u *)"nextgroup", spp->sp_next_list, attr); put_id_list((char_u *)"nextgroup", spp->sp_next_list, attr);
syn_list_flags(namelist2, spp->sp_flags, attr); syn_list_flags(namelist2, (int)ARRAY_LENGTH(namelist2), spp->sp_flags, attr);
} }
if (spp->sp_flags & (HL_SYNC_HERE|HL_SYNC_THERE)) if (spp->sp_flags & (HL_SYNC_HERE|HL_SYNC_THERE))
{ {
@@ -4058,14 +4059,14 @@ syn_list_one(
} }
static void static void
syn_list_flags(struct name_list *nlist, int flags, int attr) syn_list_flags(keyvalue_T *nlist, int nr_entries, int flags, int attr)
{ {
int i; int i;
for (i = 0; nlist[i].flag != 0; ++i) for (i = 0; i < nr_entries; ++i)
if (flags & nlist[i].flag) if (flags & nlist[i].key)
{ {
msg_puts_attr(nlist[i].name, attr); msg_puts_attr(nlist[i].value, attr);
msg_putchar(' '); msg_putchar(' ');
} }
} }
@@ -4393,6 +4394,7 @@ clear_keywtab(hashtab_T *ht)
static void static void
add_keyword( add_keyword(
char_u *name, // name of keyword char_u *name, // name of keyword
size_t namelen, // length of keyword (excluding the NUL)
int id, // group ID for this keyword int id, // group ID for this keyword
int flags, // flags for this keyword int flags, // flags for this keyword
short *cont_in_list, // containedin for this keyword short *cont_in_list, // containedin for this keyword
@@ -4403,15 +4405,22 @@ add_keyword(
hashtab_T *ht; hashtab_T *ht;
hashitem_T *hi; hashitem_T *hi;
char_u *name_ic; char_u *name_ic;
size_t name_iclen;
long_u hash; long_u hash;
char_u name_folded[MAXKEYWLEN + 1]; char_u name_folded[MAXKEYWLEN + 1];
if (curwin->w_s->b_syn_ic) if (curwin->w_s->b_syn_ic)
name_ic = str_foldcase(name, (int)STRLEN(name), {
name_ic = str_foldcase(name, (int)namelen,
name_folded, MAXKEYWLEN + 1); name_folded, MAXKEYWLEN + 1);
name_iclen = STRLEN(name_ic);
}
else else
{
name_ic = name; name_ic = name;
kp = alloc(offsetof(keyentry_T, keyword) + STRLEN(name_ic) + 1); name_iclen = namelen;
}
kp = alloc(offsetof(keyentry_T, keyword) + name_iclen + 1);
if (kp == NULL) if (kp == NULL)
return; return;
STRCPY(kp->keyword, name_ic); STRCPY(kp->keyword, name_ic);
@@ -4828,19 +4837,26 @@ syn_cmd_keyword(exarg_T *eap, int syncing UNUSED)
if (!eap->skip) if (!eap->skip)
{ {
size_t kwlen = 0;
// Adjust flags for use of ":syn include". // Adjust flags for use of ":syn include".
syn_incl_toplevel(syn_id, &syn_opt_arg.flags); syn_incl_toplevel(syn_id, &syn_opt_arg.flags);
/* /*
* 2: Add an entry for each keyword. * 2: Add an entry for each keyword.
*/ */
for (kw = keyword_copy; --cnt >= 0; kw += STRLEN(kw) + 1) for (kw = keyword_copy; --cnt >= 0; kw += kwlen + 1)
{ {
for (p = vim_strchr(kw, '['); ; ) for (p = vim_strchr(kw, '['); ; )
{ {
if (p != NULL) if (p == NULL)
kwlen = STRLEN(kw);
else
{
*p = NUL; *p = NUL;
add_keyword(kw, syn_id, syn_opt_arg.flags, kwlen = (size_t)(p - kw);
}
add_keyword(kw, kwlen, syn_id, syn_opt_arg.flags,
syn_opt_arg.cont_in_list, syn_opt_arg.cont_in_list,
syn_opt_arg.next_list, conceal_char); syn_opt_arg.next_list, conceal_char);
if (p == NULL) if (p == NULL)
@@ -4859,6 +4875,7 @@ syn_cmd_keyword(exarg_T *eap, int syncing UNUSED)
goto error; goto error;
} }
kw = p + 1; // skip over the "]" kw = p + 1; // skip over the "]"
kwlen = 1;
break; break;
} }
if (has_mbyte) if (has_mbyte)
@@ -6229,8 +6246,7 @@ static struct subcommand subcommands[] =
{"reset", syn_cmd_reset}, {"reset", syn_cmd_reset},
{"spell", syn_cmd_spell}, {"spell", syn_cmd_spell},
{"sync", syn_cmd_sync}, {"sync", syn_cmd_sync},
{"", syn_cmd_list}, {"", syn_cmd_list}
{NULL, NULL}
}; };
/* /*
@@ -6257,13 +6273,8 @@ ex_syntax(exarg_T *eap)
if (eap->skip) // skip error messages for all subcommands if (eap->skip) // skip error messages for all subcommands
++emsg_skip; ++emsg_skip;
for (i = 0; ; ++i) for (i = 0; i < (int)ARRAY_LENGTH(subcommands); ++i)
{ {
if (subcommands[i].name == NULL)
{
semsg(_(e_invalid_syntax_subcommand_str), subcmd_name);
break;
}
if (STRCMP(subcmd_name, (char_u *)subcommands[i].name) == 0) if (STRCMP(subcmd_name, (char_u *)subcommands[i].name) == 0)
{ {
eap->arg = skipwhite(subcmd_end); eap->arg = skipwhite(subcmd_end);
@@ -6271,6 +6282,10 @@ ex_syntax(exarg_T *eap)
break; break;
} }
} }
if (i == (int)ARRAY_LENGTH(subcommands))
semsg(_(e_invalid_syntax_subcommand_str), subcmd_name);
vim_free(subcmd_name); vim_free(subcmd_name);
if (eap->skip) if (eap->skip)
--emsg_skip; --emsg_skip;
@@ -6424,6 +6439,8 @@ get_syntax_name(expand_T *xp, int idx)
switch (expand_what) switch (expand_what)
{ {
case EXP_SUBCMD: case EXP_SUBCMD:
if (idx < 0 || idx >= (int)ARRAY_LENGTH(subcommands))
return NULL;
return (char_u *)subcommands[idx].name; return (char_u *)subcommands[idx].name;
case EXP_CASE: case EXP_CASE:
{ {
@@ -6697,6 +6714,7 @@ syntime_report(void)
proftime_T tm; proftime_T tm;
# endif # endif
int len; int len;
int patlen;
proftime_T total_total; proftime_T total_total;
int total_count = 0; int total_count = 0;
garray_T ga; garray_T ga;
@@ -6768,8 +6786,9 @@ syntime_report(void)
len = 20; // will wrap anyway len = 20; // will wrap anyway
else else
len = Columns - 70; len = Columns - 70;
if (len > (int)STRLEN(p->pattern)) patlen = (int)STRLEN(p->pattern);
len = (int)STRLEN(p->pattern); if (len > patlen)
len = patlen;
msg_outtrans_len(p->pattern, len); msg_outtrans_len(p->pattern, len);
msg_puts("\n"); msg_puts("\n");
} }

2
src/version.c
View File

@@ -704,6 +704,8 @@ static char *(features[]) =
static int included_patches[] = static int included_patches[] =
{ /* Add new patch number below this line */ { /* Add new patch number below this line */
/**/
652,
/**/ /**/
651, 651,
/**/ /**/