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patch 8.2.2789: Vim9: using \=expr in :substitute does not handle jumps

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Problem:    Vim9: using \=expr in :substitute does not handle jumps.
Solution:   Start with instruction count zero. (closes #8128)
This commit is contained in:
Bram Moolenaar
2021-04-20 21:10:48 +02:00
parent 3f88e71fa2
commit 8238f08838
3 changed files with 60 additions and 38 deletions
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90
src/vim9compile.c
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@@ -2179,33 +2179,6 @@ generate_EXECCONCAT(cctx_T *cctx, int count)
return OK;
}
static int
generate_substitute(char_u *cmd, int instr_start, cctx_T *cctx)
{
isn_T *isn;
isn_T *instr;
int instr_count = cctx->ctx_instr.ga_len - instr_start;
instr = ALLOC_MULT(isn_T, instr_count + 1);
if (instr == NULL)
return FAIL;
// Move the generated instructions into the ISN_SUBSTITUTE instructions,
// then truncate the list of instructions, so they are used only once.
mch_memmove(instr, ((isn_T *)cctx->ctx_instr.ga_data) + instr_start,
instr_count * sizeof(isn_T));
instr[instr_count].isn_type = ISN_FINISH;
cctx->ctx_instr.ga_len = instr_start;
if ((isn = generate_instr(cctx, ISN_SUBSTITUTE)) == NULL)
{
vim_free(instr);
return FAIL;
}
isn->isn_arg.subs.subs_cmd = vim_strsave(cmd);
isn->isn_arg.subs.subs_instr = instr;
return OK;
}
/*
* Generate ISN_RANGE. Consumes "range". Return OK/FAIL.
*/
@@ -8522,6 +8495,17 @@ theend:
return nextcmd;
}
static void
clear_instr_ga(garray_T *gap)
{
int idx;
for (idx = 0; idx < gap->ga_len; ++idx)
delete_instr(((isn_T *)gap->ga_data) + idx);
ga_clear(gap);
}
/*
* :s/pat/repl/
*/
@@ -8536,28 +8520,61 @@ compile_substitute(char_u *arg, exarg_T *eap, cctx_T *cctx)
int delimiter = *cmd++;
// There is a \=expr, find it in the substitute part.
cmd = skip_regexp_ex(cmd, delimiter, magic_isset(),
NULL, NULL, NULL);
cmd = skip_regexp_ex(cmd, delimiter, magic_isset(), NULL, NULL, NULL);
if (cmd[0] == delimiter && cmd[1] == '\\' && cmd[2] == '=')
{
int instr_count = cctx->ctx_instr.ga_len;
char_u *end;
garray_T save_ga = cctx->ctx_instr;
char_u *end;
int trailing_error;
int instr_count;
isn_T *instr = NULL;
isn_T *isn;
cmd += 3;
end = skip_substitute(cmd, delimiter);
// Temporarily reset the list of instructions so that the jumps
// labels are correct.
cctx->ctx_instr.ga_len = 0;
cctx->ctx_instr.ga_maxlen = 0;
cctx->ctx_instr.ga_data = NULL;
compile_expr0(&cmd, cctx);
if (end[-1] == NUL)
end[-1] = delimiter;
cmd = skipwhite(cmd);
if (*cmd != delimiter && *cmd != NUL)
trailing_error = *cmd != delimiter && *cmd != NUL;
instr_count = cctx->ctx_instr.ga_len;
instr = ALLOC_MULT(isn_T, instr_count + 1);
if (trailing_error || instr == NULL)
{
semsg(_(e_trailing_arg), cmd);
if (trailing_error)
semsg(_(e_trailing_arg), cmd);
clear_instr_ga(&cctx->ctx_instr);
cctx->ctx_instr = save_ga;
vim_free(instr);
return NULL;
}
if (generate_substitute(arg, instr_count, cctx) == FAIL)
// Move the generated instructions into the ISN_SUBSTITUTE
// instructions, then restore the list of instructions before
// adding the ISN_SUBSTITUTE instruction.
mch_memmove(instr, cctx->ctx_instr.ga_data,
instr_count * sizeof(isn_T));
instr[instr_count].isn_type = ISN_FINISH;
cctx->ctx_instr = save_ga;
if ((isn = generate_instr(cctx, ISN_SUBSTITUTE)) == NULL)
{
int idx;
for (idx = 0; idx < instr_count; ++idx)
delete_instr(instr + idx);
vim_free(instr);
return NULL;
}
isn->isn_arg.subs.subs_cmd = vim_strsave(arg);
isn->isn_arg.subs.subs_instr = instr;
// skip over flags
if (*end == '&')
@@ -9285,13 +9302,10 @@ nextline:
erret:
if (ufunc->uf_def_status == UF_COMPILING)
{
int idx;
dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data)
+ ufunc->uf_dfunc_idx;
for (idx = 0; idx < instr->ga_len; ++idx)
delete_instr(((isn_T *)instr->ga_data) + idx);
ga_clear(instr);
clear_instr_ga(instr);
VIM_CLEAR(dfunc->df_name);
// If using the last entry in the table and it was added above, we