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patch 8.2.0056: execution stack is incomplete and inefficient

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Problem:    Execution stack is incomplete and inefficient.
Solution:   Introduce a proper execution stack and use it instead of
            sourcing_name/sourcing_lnum.  Create a string only when used.
This commit is contained in:
Bram Moolenaar
2019-12-29 23:04:25 +01:00
parent 257a396879
commit 1a47ae32cd
23 changed files with 385 additions and 240 deletions
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48
src/ex_docmd.c
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@@ -703,7 +703,7 @@ do_cmdline(
}
else if (getline_equal(fgetline, cookie, getsourceline))
{
fname = sourcing_name;
fname = SOURCING_NAME;
breakpoint = source_breakpoint(real_cookie);
dbg_tick = source_dbg_tick(real_cookie);
}
@@ -819,22 +819,22 @@ do_cmdline(
{
*breakpoint = dbg_find_breakpoint(
getline_equal(fgetline, cookie, getsourceline),
fname, sourcing_lnum);
fname, SOURCING_LNUM);
*dbg_tick = debug_tick;
}
next_cmdline = ((wcmd_T *)(lines_ga.ga_data))[current_line].line;
sourcing_lnum = ((wcmd_T *)(lines_ga.ga_data))[current_line].lnum;
SOURCING_LNUM = ((wcmd_T *)(lines_ga.ga_data))[current_line].lnum;
// Did we encounter a breakpoint?
if (breakpoint != NULL && *breakpoint != 0
&& *breakpoint <= sourcing_lnum)
&& *breakpoint <= SOURCING_LNUM)
{
dbg_breakpoint(fname, sourcing_lnum);
dbg_breakpoint(fname, SOURCING_LNUM);
// Find next breakpoint.
*breakpoint = dbg_find_breakpoint(
getline_equal(fgetline, cookie, getsourceline),
fname, sourcing_lnum);
fname, SOURCING_LNUM);
*dbg_tick = debug_tick;
}
# ifdef FEAT_PROFILE
@@ -963,8 +963,8 @@ do_cmdline(
}
}
if (p_verbose >= 15 && sourcing_name != NULL)
msg_verbose_cmd(sourcing_lnum, cmdline_copy);
if (p_verbose >= 15 && SOURCING_NAME != NULL)
msg_verbose_cmd(SOURCING_LNUM, cmdline_copy);
/*
* 2. Execute one '|' separated command.
@@ -1081,7 +1081,7 @@ do_cmdline(
// Check for the next breakpoint after a watchexpression
if (breakpoint != NULL && has_watchexpr())
{
*breakpoint = dbg_find_breakpoint(FALSE, fname, sourcing_lnum);
*breakpoint = dbg_find_breakpoint(FALSE, fname, SOURCING_LNUM);
*dbg_tick = debug_tick;
}
@@ -1092,7 +1092,7 @@ do_cmdline(
{
if (lines_ga.ga_len > 0)
{
sourcing_lnum =
SOURCING_LNUM =
((wcmd_T *)lines_ga.ga_data)[lines_ga.ga_len - 1].lnum;
free_cmdlines(&lines_ga);
}
@@ -1234,8 +1234,6 @@ do_cmdline(
if (did_throw)
{
void *p = NULL;
char_u *saved_sourcing_name;
int saved_sourcing_lnum;
struct msglist *messages = NULL, *next;
/*
@@ -1260,10 +1258,8 @@ do_cmdline(
break;
}
saved_sourcing_name = sourcing_name;
saved_sourcing_lnum = sourcing_lnum;
sourcing_name = current_exception->throw_name;
sourcing_lnum = current_exception->throw_lnum;
estack_push(ETYPE_EXCEPT, current_exception->throw_name,
current_exception->throw_lnum);
current_exception->throw_name = NULL;
discard_current_exception(); // uses IObuff if 'verbose'
@@ -1287,9 +1283,8 @@ do_cmdline(
emsg(p);
vim_free(p);
}
vim_free(sourcing_name);
sourcing_name = saved_sourcing_name;
sourcing_lnum = saved_sourcing_lnum;
vim_free(SOURCING_NAME);
estack_pop();
}
/*
@@ -1428,7 +1423,7 @@ get_loop_line(int c, void *cookie, int indent, int do_concat)
KeyTyped = FALSE;
++cp->current_line;
wp = (wcmd_T *)(cp->lines_gap->ga_data) + cp->current_line;
sourcing_lnum = wp->lnum;
SOURCING_LNUM = wp->lnum;
return vim_strsave(wp->line);
}
@@ -1441,7 +1436,7 @@ store_loop_line(garray_T *gap, char_u *line)
if (ga_grow(gap, 1) == FAIL)
return FAIL;
((wcmd_T *)(gap->ga_data))[gap->ga_len].line = vim_strsave(line);
((wcmd_T *)(gap->ga_data))[gap->ga_len].lnum = sourcing_lnum;
((wcmd_T *)(gap->ga_data))[gap->ga_len].lnum = SOURCING_LNUM;
++gap->ga_len;
return OK;
}
@@ -8171,33 +8166,34 @@ eval_vars(
break;
case SPEC_SFILE: // file name for ":so" command
result = sourcing_name;
result = estack_sfile();
if (result == NULL)
{
*errormsg = _("E498: no :source file name to substitute for \"<sfile>\"");
return NULL;
}
resultbuf = result; // remember allocated string
break;
case SPEC_SLNUM: // line in file for ":so" command
if (sourcing_name == NULL || sourcing_lnum == 0)
if (SOURCING_NAME == NULL || SOURCING_LNUM == 0)
{
*errormsg = _("E842: no line number to use for \"<slnum>\"");
return NULL;
}
sprintf((char *)strbuf, "%ld", (long)sourcing_lnum);
sprintf((char *)strbuf, "%ld", SOURCING_LNUM);
result = strbuf;
break;
#ifdef FEAT_EVAL
case SPEC_SFLNUM: // line in script file
if (current_sctx.sc_lnum + sourcing_lnum == 0)
if (current_sctx.sc_lnum + SOURCING_LNUM == 0)
{
*errormsg = _("E961: no line number to use for \"<sflnum>\"");
return NULL;
}
sprintf((char *)strbuf, "%ld",
(long)(current_sctx.sc_lnum + sourcing_lnum));
(long)(current_sctx.sc_lnum + SOURCING_LNUM));
result = strbuf;
break;
#endif