diff options
| -rw-r--r-- | runtime/doc/eval.txt | 12 | ||||
| -rw-r--r-- | src/nvim/eval.c | 40 | ||||
| -rw-r--r-- | src/nvim/testdir/test_eval_stuff.vim | 8 | ||||
| -rw-r--r-- | src/nvim/testdir/test_vimscript.vim | 20 |
4 files changed, 67 insertions, 13 deletions
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt index 2b79b0280f..fc788fba59 100644 --- a/runtime/doc/eval.txt +++ b/runtime/doc/eval.txt @@ -372,8 +372,8 @@ Changing the order of items in a list: > For loop ~ -The |:for| loop executes commands for each item in a |List| or |Blob|. -A variable is set to each item in the sequence. Example with a List: > +The |:for| loop executes commands for each item in a |List|, |String| or |Blob|. +A variable is set to each item in sequence. Example with a List: > :for item in mylist : call Doit(item) :endfor @@ -390,7 +390,7 @@ If all you want to do is modify each item in the list then the |map()| function will be a simpler method than a for loop. Just like the |:let| command, |:for| also accepts a list of variables. This -requires the argument to be a list of lists. > +requires the argument to be a List of Lists. > :for [lnum, col] in [[1, 3], [2, 8], [3, 0]] : call Doit(lnum, col) :endfor @@ -408,6 +408,12 @@ It is also possible to put remaining items in a List variable: > For a Blob one byte at a time is used. +For a String one character, including any composing characters, is used as a +String. Example: > + for c in text + echo 'This character is ' .. c + endfor + List functions ~ *E714* diff --git a/src/nvim/eval.c b/src/nvim/eval.c index 8421d8978a..dccad5a2d0 100644 --- a/src/nvim/eval.c +++ b/src/nvim/eval.c @@ -69,6 +69,7 @@ static char *e_nowhitespace static char *e_invalwindow = N_("E957: Invalid window number"); static char *e_lock_unlock = N_("E940: Cannot lock or unlock variable %s"); static char *e_write2 = N_("E80: Error while writing: %s"); +static char *e_string_list_or_blob_required = N_("E1098: String, List or Blob required"); // TODO(ZyX-I): move to eval/executor static char *e_letwrong = N_("E734: Wrong variable type for %s="); @@ -112,9 +113,11 @@ typedef struct { int fi_semicolon; // TRUE if ending in '; var]' int fi_varcount; // nr of variables in the list listwatch_T fi_lw; // keep an eye on the item used. - list_T *fi_list; // list being used + list_T *fi_list; // list being used int fi_bi; // index of blob blob_T *fi_blob; // blob being used + char_u *fi_string; // copy of string being used + int fi_byte_idx; // byte index in fi_string } forinfo_T; // values for vv_flags: @@ -2641,8 +2644,15 @@ void *eval_for_line(const char_u *arg, bool *errp, char_u **nextcmdp, int skip) fi->fi_blob = btv.vval.v_blob; } tv_clear(&tv); + } else if (tv.v_type == VAR_STRING) { + fi->fi_byte_idx = 0; + fi->fi_string = tv.vval.v_string; + tv.vval.v_string = NULL; + if (fi->fi_string == NULL) { + fi->fi_string = vim_strsave((char_u *)""); + } } else { - emsg(_(e_listblobreq)); + emsg(_(e_string_list_or_blob_required)); tv_clear(&tv); } } @@ -2679,6 +2689,22 @@ bool next_for_item(void *fi_void, char_u *arg) fi->fi_semicolon, fi->fi_varcount, false, NULL) == OK; } + if (fi->fi_string != NULL) { + const int len = utfc_ptr2len(fi->fi_string + fi->fi_byte_idx); + if (len == 0) { + return false; + } + typval_T tv; + tv.v_type = VAR_STRING; + tv.v_lock = VAR_FIXED; + tv.vval.v_string = vim_strnsave(fi->fi_string + fi->fi_byte_idx, len); + fi->fi_byte_idx += len; + const int result + = ex_let_vars(arg, &tv, true, fi->fi_semicolon, fi->fi_varcount, false, NULL) == OK; + xfree(tv.vval.v_string); + return result; + } + listitem_T *item = fi->fi_lw.lw_item; if (item == NULL) { return false; @@ -2698,12 +2724,16 @@ void free_for_info(void *fi_void) { forinfo_T *fi = (forinfo_T *)fi_void; - if (fi != NULL && fi->fi_list != NULL) { + if (fi == NULL) { + return; + } + if (fi->fi_list != NULL) { tv_list_watch_remove(fi->fi_list, &fi->fi_lw); tv_list_unref(fi->fi_list); - } - if (fi != NULL && fi->fi_blob != NULL) { + } else if (fi->fi_blob != NULL) { tv_blob_unref(fi->fi_blob); + } else { + xfree(fi->fi_string); } xfree(fi); } diff --git a/src/nvim/testdir/test_eval_stuff.vim b/src/nvim/testdir/test_eval_stuff.vim index 883ba5de3d..95eccde35c 100644 --- a/src/nvim/testdir/test_eval_stuff.vim +++ b/src/nvim/testdir/test_eval_stuff.vim @@ -65,11 +65,9 @@ func Test_E963() endfunc func Test_for_invalid() - " Vim gives incorrect emsg here until v8.2.3284, but the exact emsg from that - " patch cannot be used until v8.2.2658 is ported (for loop over Strings) - call assert_fails("for x in 99", 'E897:') - call assert_fails("for x in function('winnr')", 'E897:') - call assert_fails("for x in {'a': 9}", 'E897:') + call assert_fails("for x in 99", 'E1098:') + call assert_fails("for x in function('winnr')", 'E1098:') + call assert_fails("for x in {'a': 9}", 'E1098:') if 0 /1/5/2/s/\n diff --git a/src/nvim/testdir/test_vimscript.vim b/src/nvim/testdir/test_vimscript.vim index 34733f127f..c59cab5f36 100644 --- a/src/nvim/testdir/test_vimscript.vim +++ b/src/nvim/testdir/test_vimscript.vim @@ -1692,6 +1692,26 @@ func Test_function_defined_line() call delete('Xtest.vim') endfunc +func Test_for_over_string() + let res = '' + for c in 'aéc̀d' + let res ..= c .. '-' + endfor + call assert_equal('a-é-c̀-d-', res) + + let res = '' + for c in '' + let res ..= c .. '-' + endfor + call assert_equal('', res) + + let res = '' + for c in v:_null_string + let res ..= c .. '-' + endfor + call assert_equal('', res) +endfunc + "------------------------------------------------------------------------------- " Modelines {{{1 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker |