Patch 8.2.2073
Problem: Vim9: for with unpack only works for local variables.
Solution: Recognize different destinations.
Files: src/vim9compile.c, src/testdir/test_vim9_script.vim
*** ../vim-8.2.2072/src/vim9compile.c 2020-11-30 21:39:59.476308440 +0100
--- src/vim9compile.c 2020-12-01 16:02:20.972165341 +0100
***************
*** 5066,5071 ****
--- 5066,5249 ----
}
/*
+ * For one assignment figure out the type of destination. Return it in
"dest".
+ * When not recognized "dest" is not set.
+ * For an option "opt_flags" is set.
+ * For a v:var "vimvaridx" is set.
+ * "type" is set to the destination type if known, unchanted otherwise.
+ * Return FAIL if an error message was given.
+ */
+ static int
+ get_var_dest(
+ char_u *name,
+ assign_dest_T *dest,
+ int cmdidx,
+ int *opt_flags,
+ int *vimvaridx,
+ type_T **type,
+ cctx_T *cctx)
+ {
+ char_u *p;
+
+ if (*name == '&')
+ {
+ int cc;
+ long numval;
+ int opt_type;
+
+ *dest = dest_option;
+ if (cmdidx == CMD_final || cmdidx == CMD_const)
+ {
+ emsg(_(e_const_option));
+ return FAIL;
+ }
+ p = name;
+ p = find_option_end(&p, opt_flags);
+ if (p == NULL)
+ {
+ // cannot happen?
+ emsg(_(e_letunexp));
+ return FAIL;
+ }
+ cc = *p;
+ *p = NUL;
+ opt_type = get_option_value(skip_option_env_lead(name),
+ &numval, NULL, *opt_flags);
+ *p = cc;
+ if (opt_type == -3)
+ {
+ semsg(_(e_unknown_option), name);
+ return FAIL;
+ }
+ if (opt_type == -2 || opt_type == 0)
+ *type = &t_string;
+ else
+ *type = &t_number; // both number and boolean option
+ }
+ else if (*name == '$')
+ {
+ *dest = dest_env;
+ *type = &t_string;
+ }
+ else if (*name == '@')
+ {
+ if (!valid_yank_reg(name[1], FALSE) || name[1] == '.')
+ {
+ emsg_invreg(name[1]);
+ return FAIL;
+ }
+ *dest = dest_reg;
+ *type = &t_string;
+ }
+ else if (STRNCMP(name, "g:", 2) == 0)
+ {
+ *dest = dest_global;
+ }
+ else if (STRNCMP(name, "b:", 2) == 0)
+ {
+ *dest = dest_buffer;
+ }
+ else if (STRNCMP(name, "w:", 2) == 0)
+ {
+ *dest = dest_window;
+ }
+ else if (STRNCMP(name, "t:", 2) == 0)
+ {
+ *dest = dest_tab;
+ }
+ else if (STRNCMP(name, "v:", 2) == 0)
+ {
+ typval_T *vtv;
+ int di_flags;
+
+ *vimvaridx = find_vim_var(name + 2, &di_flags);
+ if (*vimvaridx < 0)
+ {
+ semsg(_(e_variable_not_found_str), name);
+ return FAIL;
+ }
+ // We use the current value of "sandbox" here, is that OK?
+ if (var_check_ro(di_flags, name, FALSE))
+ return FAIL;
+ *dest = dest_vimvar;
+ vtv = get_vim_var_tv(*vimvaridx);
+ *type = typval2type_vimvar(vtv, cctx->ctx_type_list);
+ }
+ return OK;
+ }
+
+ /*
+ * Generate a STORE instruction for "dest", not being "dest_local".
+ * Return FAIL when out of memory.
+ */
+ static int
+ generate_store_var(
+ cctx_T *cctx,
+ assign_dest_T dest,
+ int opt_flags,
+ int vimvaridx,
+ int scriptvar_idx,
+ int scriptvar_sid,
+ type_T *type,
+ char_u *name)
+ {
+ switch (dest)
+ {
+ case dest_option:
+ return generate_STOREOPT(cctx, skip_option_env_lead(name),
+ opt_flags);
+ case dest_global:
+ // include g: with the name, easier to execute that way
+ return generate_STORE(cctx, ISN_STOREG, 0, name);
+ case dest_buffer:
+ // include b: with the name, easier to execute that way
+ return generate_STORE(cctx, ISN_STOREB, 0, name);
+ case dest_window:
+ // include w: with the name, easier to execute that way
+ return generate_STORE(cctx, ISN_STOREW, 0, name);
+ case dest_tab:
+ // include t: with the name, easier to execute that way
+ return generate_STORE(cctx, ISN_STORET, 0, name);
+ case dest_env:
+ return generate_STORE(cctx, ISN_STOREENV, 0, name + 1);
+ case dest_reg:
+ return generate_STORE(cctx, ISN_STOREREG, name[1], NULL);
+ case dest_vimvar:
+ return generate_STORE(cctx, ISN_STOREV, vimvaridx, NULL);
+ case dest_script:
+ if (scriptvar_idx < 0)
+ {
+ char_u *name_s = name;
+ int r;
+
+ // Include s: in the name for store_var()
+ if (name[1] != ':')
+ {
+ int len = (int)STRLEN(name) + 3;
+
+ name_s = alloc(len);
+ if (name_s == NULL)
+ name_s = name;
+ else
+ vim_snprintf((char *)name_s, len, "s:%s", name);
+ }
+ r = generate_OLDSCRIPT(cctx, ISN_STORES, name_s,
+ scriptvar_sid, type);
+ if (name_s != name)
+ vim_free(name_s);
+ return r;
+ }
+ return generate_VIM9SCRIPT(cctx, ISN_STORESCRIPT,
+ scriptvar_sid, scriptvar_idx, type);
+ case dest_local:
+ case dest_expr:
+ // cannot happen
+ break;
+ }
+ return FAIL;
+ }
+
+ /*
* Compile declaration and assignment:
* "let name"
* "var name = expr"
***************
*** 5205,5216 ****
var_start = arg;
for (var_idx = 0; var_idx == 0 || var_idx < var_count; var_idx++)
{
! char_u *var_end = skip_var_one(var_start, FALSE);
size_t varlen;
int new_local = FALSE;
- int opt_type;
- int opt_flags = 0;
assign_dest_T dest = dest_local;
int vimvaridx = -1;
lvar_T *lvar = NULL;
lvar_T arg_lvar;
--- 5383,5394 ----
var_start = arg;
for (var_idx = 0; var_idx == 0 || var_idx < var_count; var_idx++)
{
! char_u *var_end;
! char_u *dest_end;
size_t varlen;
int new_local = FALSE;
assign_dest_T dest = dest_local;
+ int opt_flags = 0;
int vimvaridx = -1;
lvar_T *lvar = NULL;
lvar_T arg_lvar;
***************
*** 5218,5239 ****
int has_index = FALSE;
int instr_count = -1;
if (*var_start == '@')
! p = var_start + 2;
else
{
// skip over the leading "&", "&l:", "&g:" and "$"
! p = skip_option_env_lead(var_start);
! p = to_name_end(p, TRUE);
}
! // "a: type" is declaring variable "a" with a type, not "a:".
if (is_decl && var_end == var_start + 2 && var_end[-1] == ':')
--var_end;
- if (is_decl && p == var_start + 2 && p[-1] == ':')
- --p;
! varlen = p - var_start;
vim_free(name);
name = vim_strnsave(var_start, varlen);
if (name == NULL)
--- 5396,5422 ----
int has_index = FALSE;
int instr_count = -1;
+ // "dest_end" is the end of the destination, including "[expr]" or
+ // ".name".
+ // "var_end" is the end of the variable/option/etc. name.
+ dest_end = skip_var_one(var_start, FALSE);
if (*var_start == '@')
! var_end = var_start + 2;
else
{
// skip over the leading "&", "&l:", "&g:" and "$"
! var_end = skip_option_env_lead(var_start);
! var_end = to_name_end(var_end, TRUE);
}
! // "a: type" is declaring variable "a" with a type, not dict "a:".
! if (is_decl && dest_end == var_start + 2 && dest_end[-1] == ':')
! --dest_end;
if (is_decl && var_end == var_start + 2 && var_end[-1] == ':')
--var_end;
! // compute the length of the destination without "[expr]" or ".name"
! varlen = var_end - var_start;
vim_free(name);
name = vim_strnsave(var_start, varlen);
if (name == NULL)
***************
*** 5245,5345 ****
{
int declare_error = FALSE;
! if (*var_start == '&')
! {
! int cc;
! long numval;
!
! dest = dest_option;
! if (cmdidx == CMD_final || cmdidx == CMD_const)
! {
! emsg(_(e_const_option));
! goto theend;
! }
! declare_error = is_decl;
! p = var_start;
! p = find_option_end(&p, &opt_flags);
! if (p == NULL)
! {
! // cannot happen?
! emsg(_(e_letunexp));
! goto theend;
! }
! cc = *p;
! *p = NUL;
! opt_type = get_option_value(skip_option_env_lead(var_start),
! &numval, NULL, opt_flags);
! *p = cc;
! if (opt_type == -3)
! {
! semsg(_(e_unknown_option), var_start);
! goto theend;
! }
! if (opt_type == -2 || opt_type == 0)
! type = &t_string;
! else
! type = &t_number; // both number and boolean option
! }
! else if (*var_start == '$')
! {
! dest = dest_env;
! type = &t_string;
! declare_error = is_decl;
! }
! else if (*var_start == '@')
! {
! if (!valid_yank_reg(var_start[1], FALSE) || var_start[1] == '.')
! {
! emsg_invreg(var_start[1]);
! goto theend;
! }
! dest = dest_reg;
! type = &t_string;
! declare_error = is_decl;
! }
! else if (varlen > 1 && STRNCMP(var_start, "g:", 2) == 0)
! {
! dest = dest_global;
! declare_error = is_decl;
! }
! else if (varlen > 1 && STRNCMP(var_start, "b:", 2) == 0)
! {
! dest = dest_buffer;
! declare_error = is_decl;
! }
! else if (varlen > 1 && STRNCMP(var_start, "w:", 2) == 0)
! {
! dest = dest_window;
! declare_error = is_decl;
! }
! else if (varlen > 1 && STRNCMP(var_start, "t:", 2) == 0)
! {
! dest = dest_tab;
! declare_error = is_decl;
! }
! else if (varlen > 1 && STRNCMP(var_start, "v:", 2) == 0)
{
! typval_T *vtv;
! int di_flags;
!
! vimvaridx = find_vim_var(name + 2, &di_flags);
! if (vimvaridx < 0)
! {
! semsg(_(e_variable_not_found_str), var_start);
! goto theend;
! }
! // We use the current value of "sandbox" here, is that OK?
! if (var_check_ro(di_flags, name, FALSE))
! goto theend;
! dest = dest_vimvar;
! vtv = get_vim_var_tv(vimvaridx);
! type = typval2type_vimvar(vtv, cctx->ctx_type_list);
declare_error = is_decl;
}
else
{
int idx;
for (idx = 0; reserved[idx] != NULL; ++idx)
if (STRCMP(reserved[idx], name) == 0)
{
--- 5428,5446 ----
{
int declare_error = FALSE;
! if (get_var_dest(name, &dest, cmdidx, &opt_flags,
! &vimvaridx, &type, cctx) == FAIL)
! goto theend;
! if (dest != dest_local)
{
! // Specific kind of variable recognized.
declare_error = is_decl;
}
else
{
int idx;
+ // No specific kind of variable recognized, just a name.
for (idx = 0; reserved[idx] != NULL; ++idx)
if (STRCMP(reserved[idx], name) == 0)
{
***************
*** 5450,5468 ****
// handle "a:name" as a name, not index "name" on "a"
if (varlen > 1 || var_start[varlen] != ':')
! p = var_end;
if (dest != dest_option)
{
! if (is_decl && *p == ':')
{
// parse optional type: "let var: type = expr"
! if (!VIM_ISWHITE(p[1]))
{
semsg(_(e_white_space_required_after_str), ":");
goto theend;
}
! p = skipwhite(p + 1);
type = parse_type(&p, cctx->ctx_type_list);
has_type = TRUE;
}
--- 5551,5569 ----
// handle "a:name" as a name, not index "name" on "a"
if (varlen > 1 || var_start[varlen] != ':')
! var_end = dest_end;
if (dest != dest_option)
{
! if (is_decl && *var_end == ':')
{
// parse optional type: "let var: type = expr"
! if (!VIM_ISWHITE(var_end[1]))
{
semsg(_(e_white_space_required_after_str), ":");
goto theend;
}
! p = skipwhite(var_end + 1);
type = parse_type(&p, cctx->ctx_type_list);
has_type = TRUE;
}
***************
*** 5499,5505 ****
}
member_type = type;
! if (var_end > var_start + varlen)
{
// Something follows after the variable: "var[idx]" or "var.key".
// TODO: should we also handle "->func()" here?
--- 5600,5606 ----
}
member_type = type;
! if (dest_end > var_start + varlen)
{
// Something follows after the variable: "var[idx]" or "var.key".
// TODO: should we also handle "->func()" here?
***************
*** 5856,5867 ****
if (type->tt_type == VAR_LIST)
{
if (generate_instr_drop(cctx, ISN_STORELIST, 3) == FAIL)
! return FAIL;
}
else if (type->tt_type == VAR_DICT)
{
if (generate_instr_drop(cctx, ISN_STOREDICT, 3) == FAIL)
! return FAIL;
}
else
{
--- 5957,5968 ----
if (type->tt_type == VAR_LIST)
{
if (generate_instr_drop(cctx, ISN_STORELIST, 3) == FAIL)
! goto theend;
}
else if (type->tt_type == VAR_DICT)
{
if (generate_instr_drop(cctx, ISN_STOREDICT, 3) == FAIL)
! goto theend;
}
else
{
***************
*** 5876,5975 ****
// ":const var": lock the value, but not referenced variables
generate_LOCKCONST(cctx);
! switch (dest)
{
! case dest_option:
! generate_STOREOPT(cctx, skip_option_env_lead(name),
! opt_flags);
! break;
! case dest_global:
! // include g: with the name, easier to execute that way
! generate_STORE(cctx, ISN_STOREG, 0, name);
! break;
! case dest_buffer:
! // include b: with the name, easier to execute that way
! generate_STORE(cctx, ISN_STOREB, 0, name);
! break;
! case dest_window:
! // include w: with the name, easier to execute that way
! generate_STORE(cctx, ISN_STOREW, 0, name);
! break;
! case dest_tab:
! // include t: with the name, easier to execute that way
! generate_STORE(cctx, ISN_STORET, 0, name);
! break;
! case dest_env:
! generate_STORE(cctx, ISN_STOREENV, 0, name + 1);
! break;
! case dest_reg:
! generate_STORE(cctx, ISN_STOREREG, name[1], NULL);
! break;
! case dest_vimvar:
! generate_STORE(cctx, ISN_STOREV, vimvaridx, NULL);
! break;
! case dest_script:
! {
! if (scriptvar_idx < 0)
! {
! char_u *name_s = name;
!
! // Include s: in the name for store_var()
! if (name[1] != ':')
! {
! int len = (int)STRLEN(name) + 3;
!
! name_s = alloc(len);
! if (name_s == NULL)
! name_s = name;
! else
! vim_snprintf((char *)name_s, len,
! "s:%s", name);
! }
! generate_OLDSCRIPT(cctx, ISN_STORES, name_s,
! scriptvar_sid, type);
! if (name_s != name)
! vim_free(name_s);
! }
! else
! generate_VIM9SCRIPT(cctx, ISN_STORESCRIPT,
! scriptvar_sid, scriptvar_idx, type);
! }
! break;
! case dest_local:
! if (lvar != NULL)
! {
! isn_T *isn = ((isn_T *)instr->ga_data)
! + instr->ga_len - 1;
! // optimization: turn "var = 123" from ISN_PUSHNR +
! // ISN_STORE into ISN_STORENR
! if (!lvar->lv_from_outer
! && instr->ga_len == instr_count + 1
! && isn->isn_type == ISN_PUSHNR)
! {
! varnumber_T val = isn->isn_arg.number;
! isn->isn_type = ISN_STORENR;
! isn->isn_arg.storenr.stnr_idx = lvar->lv_idx;
! isn->isn_arg.storenr.stnr_val = val;
! if (stack->ga_len > 0)
! --stack->ga_len;
! }
! else if (lvar->lv_from_outer)
! generate_STORE(cctx, ISN_STOREOUTER, lvar->lv_idx,
! NULL);
! else
! generate_STORE(cctx, ISN_STORE, lvar->lv_idx, NULL);
! }
! break;
! case dest_expr:
! // cannot happen
! break;
}
}
if (var_idx + 1 < var_count)
! var_start = skipwhite(var_end + 1);
}
// for "[var, var] = expr" drop the "expr" value
--- 5977,6016 ----
// ":const var": lock the value, but not referenced variables
generate_LOCKCONST(cctx);
! if (dest != dest_local)
{
! if (generate_store_var(cctx, dest, opt_flags, vimvaridx,
! scriptvar_idx, scriptvar_sid, type, name) == FAIL)
! goto theend;
! }
! else if (lvar != NULL)
! {
! isn_T *isn = ((isn_T *)instr->ga_data)
! + instr->ga_len - 1;
! // optimization: turn "var = 123" from ISN_PUSHNR +
! // ISN_STORE into ISN_STORENR
! if (!lvar->lv_from_outer
! && instr->ga_len == instr_count + 1
! && isn->isn_type == ISN_PUSHNR)
! {
! varnumber_T val = isn->isn_arg.number;
! isn->isn_type = ISN_STORENR;
! isn->isn_arg.storenr.stnr_idx = lvar->lv_idx;
! isn->isn_arg.storenr.stnr_val = val;
! if (stack->ga_len > 0)
! --stack->ga_len;
! }
! else if (lvar->lv_from_outer)
! generate_STORE(cctx, ISN_STOREOUTER, lvar->lv_idx, NULL);
! else
! generate_STORE(cctx, ISN_STORE, lvar->lv_idx, NULL);
}
}
if (var_idx + 1 < var_count)
! var_start = skipwhite(dest_end + 1);
}
// for "[var, var] = expr" drop the "expr" value
***************
*** 6443,6448 ****
--- 6484,6490 ----
{
char_u *arg;
char_u *arg_end;
+ char_u *name = NULL;
char_u *p;
int var_count = 0;
int semicolon = FALSE;
***************
*** 6538,6578 ****
for (idx = 0; idx < var_count; ++idx)
{
! // TODO: use skip_var_one, also assign to @r, $VAR, etc.
! p = arg;
! while (eval_isnamec(*p))
! ++p;
varlen = p - arg;
! var_lvar = lookup_local(arg, varlen, cctx);
! if (var_lvar != NULL)
! {
! semsg(_(e_variable_already_declared), arg);
! drop_scope(cctx);
! return NULL;
! }
! // Reserve a variable to store "var".
! // TODO: check for type
! var_lvar = reserve_local(cctx, arg, varlen, FALSE, &t_any);
! if (var_lvar == NULL)
{
! // out of memory or used as an argument
! drop_scope(cctx);
! return NULL;
}
-
- if (semicolon && idx == var_count - 1)
- var_lvar->lv_type = vartype;
else
! var_lvar->lv_type = item_type;
! generate_STORE(cctx, ISN_STORE, var_lvar->lv_idx, NULL);
if (*p == ',' || *p == ';')
++p;
arg = skipwhite(p);
}
return arg_end;
}
/*
--- 6580,6641 ----
for (idx = 0; idx < var_count; ++idx)
{
! assign_dest_T dest = dest_local;
! int opt_flags = 0;
! int vimvaridx = -1;
! type_T *type = &t_any;
!
! p = skip_var_one(arg, FALSE);
varlen = p - arg;
! name = vim_strnsave(arg, varlen);
! if (name == NULL)
! goto failed;
! // TODO: script var not supported?
! if (get_var_dest(name, &dest, CMD_for, &opt_flags,
! &vimvaridx, &type, cctx) == FAIL)
! goto failed;
! if (dest != dest_local)
{
! if (generate_store_var(cctx, dest, opt_flags, vimvaridx,
! 0, 0, type, name) == FAIL)
! goto failed;
}
else
! {
! var_lvar = lookup_local(arg, varlen, cctx);
! if (var_lvar != NULL)
! {
! semsg(_(e_variable_already_declared), arg);
! goto failed;
! }
!
! // Reserve a variable to store "var".
! // TODO: check for type
! var_lvar = reserve_local(cctx, arg, varlen, FALSE, &t_any);
! if (var_lvar == NULL)
! // out of memory or used as an argument
! goto failed;
!
! if (semicolon && idx == var_count - 1)
! var_lvar->lv_type = vartype;
! else
! var_lvar->lv_type = item_type;
! generate_STORE(cctx, ISN_STORE, var_lvar->lv_idx, NULL);
! }
if (*p == ',' || *p == ';')
++p;
arg = skipwhite(p);
+ vim_free(name);
}
return arg_end;
+
+ failed:
+ vim_free(name);
+ drop_scope(cctx);
+ return NULL;
}
/*
*** ../vim-8.2.2072/src/testdir/test_vim9_script.vim 2020-11-23
08:31:14.101789113 +0100
--- src/testdir/test_vim9_script.vim 2020-12-01 16:11:55.397797777 +0100
***************
*** 1863,1884 ****
enddef
def Test_for_loop_unpack()
- var result = []
- for [v1, v2] in [[1, 2], [3, 4]]
- result->add(v1)
- result->add(v2)
- endfor
- assert_equal([1, 2, 3, 4], result)
-
- result = []
- for [v1, v2; v3] in [[1, 2], [3, 4, 5, 6]]
- result->add(v1)
- result->add(v2)
- result->add(v3)
- endfor
- assert_equal([1, 2, [], 3, 4, [5, 6]], result)
-
var lines =<< trim END
for [v1, v2] in [[1, 2, 3], [3, 4]]
echo v1 v2
endfor
--- 1863,1911 ----
enddef
def Test_for_loop_unpack()
var lines =<< trim END
+ var result = []
+ for [v1, v2] in [[1, 2], [3, 4]]
+ result->add(v1)
+ result->add(v2)
+ endfor
+ assert_equal([1, 2, 3, 4], result)
+
+ result = []
+ for [v1, v2; v3] in [[1, 2], [3, 4, 5, 6]]
+ result->add(v1)
+ result->add(v2)
+ result->add(v3)
+ endfor
+ assert_equal([1, 2, [], 3, 4, [5, 6]], result)
+
+ result = []
+ for [&ts, &sw] in [[1, 2], [3, 4]]
+ result->add(&ts)
+ result->add(&sw)
+ endfor
+ assert_equal([1, 2, 3, 4], result)
+
+ var slist: list<string>
+ for [$LOOPVAR, @r, v:errmsg] in [['a', 'b', 'c'], ['d', 'e', 'f']]
+ slist->add($LOOPVAR)
+ slist->add(@r)
+ slist->add(v:errmsg)
+ endfor
+ assert_equal(['a', 'b', 'c', 'd', 'e', 'f'], slist)
+
+ slist = []
+ for [g:globalvar, b:bufvar, w:winvar, t:tabvar] in [['global', 'buf',
'win', 'tab'], ['1', '2', '3', '4']]
+ slist->add(g:globalvar)
+ slist->add(b:bufvar)
+ slist->add(w:winvar)
+ slist->add(t:tabvar)
+ endfor
+ assert_equal(['global', 'buf', 'win', 'tab', '1', '2', '3', '4'], slist)
+ END
+ CheckDefAndScriptSuccess(lines)
+
+ lines =<< trim END
for [v1, v2] in [[1, 2, 3], [3, 4]]
echo v1 v2
endfor
*** ../vim-8.2.2072/src/version.c 2020-11-30 21:39:59.476308440 +0100
--- src/version.c 2020-12-01 16:28:53.489988585 +0100
***************
*** 752,753 ****
--- 752,755 ----
{ /* Add new patch number below this line */
+ /**/
+ 2073,
/**/
--
BLACK KNIGHT: Come on you pansy!
[hah] [parry thrust]
[ARTHUR chops the BLACK KNIGHT's right arm off]
ARTHUR: Victory is mine! [kneeling]
We thank thee Lord, that in thy merc-
[Black Knight kicks Arthur in the head while he is praying]
The Quest for the Holy Grail (Monty Python)
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
--
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