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window: Fix matchaddpos() and enhance error reporting

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This commit is contained in:
ZyX
2017-12-15 11:38:34 +03:00
parent c8a5d6181b
commit fb07391ce4
4 changed files with 153 additions and 50 deletions
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6
runtime/doc/eval.txt
View File

@@ -5493,7 +5493,7 @@ matchaddpos({group}, {pos} [, {priority} [, {id} [, {dict}]]])
sets buffer line boundaries to redraw screen. It is supposed
to be used when fast match additions and deletions are
required, for example to highlight matching parentheses.
*E5030* *E5031*
The list {pos} can contain one of these items:
- A number. This whole line will be highlighted. The first
line has number 1.
@@ -5507,6 +5507,10 @@ matchaddpos({group}, {pos} [, {priority} [, {id} [, {dict}]]])
- A list with three numbers, e.g., [23, 11, 3]. As above, but
the third number gives the length of the highlight in bytes.
Entries with zero and negative line numbers are silently
ignored, as well as entries with negative column numbers and
lengths.
The maximum number of positions is 8.
Example: >

20
src/nvim/window.c
View File

@@ -5619,19 +5619,17 @@ int match_add(win_T *wp, const char *const grp, const char *const pat,
if (TV_LIST_ITEM_TV(li)->v_type == VAR_LIST) {
const list_T *const subl = TV_LIST_ITEM_TV(li)->vval.v_list;
if (subl == NULL) {
goto fail;
}
const listitem_T *subli = tv_list_first(subl);
if (subli == NULL) {
emsgf(_("E5030: Empty list at position %d"),
(int)tv_list_idx_of_item(pos_list, li));
goto fail;
}
lnum = tv_get_number_chk(TV_LIST_ITEM_TV(subli), &error);
if (error) {
goto fail;
}
if (lnum == 0) {
--i;
if (lnum <= 0) {
continue;
}
m->pos.pos[i].lnum = lnum;
@@ -5641,9 +5639,15 @@ int match_add(win_T *wp, const char *const grp, const char *const pat,
if (error) {
goto fail;
}
if (col < 0) {
continue;
}
subli = TV_LIST_ITEM_NEXT(subl, subli);
if (subli != NULL) {
len = tv_get_number_chk(TV_LIST_ITEM_TV(subli), &error);
if (len < 0) {
continue;
}
if (error) {
goto fail;
}
@@ -5652,15 +5656,15 @@ int match_add(win_T *wp, const char *const grp, const char *const pat,
m->pos.pos[i].col = col;
m->pos.pos[i].len = len;
} else if (TV_LIST_ITEM_TV(li)->v_type == VAR_NUMBER) {
if (TV_LIST_ITEM_TV(li)->vval.v_number == 0) {
i--;
if (TV_LIST_ITEM_TV(li)->vval.v_number <= 0) {
continue;
}
m->pos.pos[i].lnum = TV_LIST_ITEM_TV(li)->vval.v_number;
m->pos.pos[i].col = 0;
m->pos.pos[i].len = 0;
} else {
EMSG(_("List or number required"));
emsgf(_("E5031: List or number required at position %d"),
(int)tv_list_idx_of_item(pos_list, li));
goto fail;
}
if (toplnum == 0 || lnum < toplnum) {

95
test/functional/eval/match_functions_spec.lua
View File

@@ -1,9 +1,12 @@
local helpers = require('test.functional.helpers')(after_each)
local Screen = require('test.functional.ui.screen')
local eq = helpers.eq
local clear = helpers.clear
local funcs = helpers.funcs
local meths = helpers.meths
local command = helpers.command
local exc_exec = helpers.exc_exec
before_each(clear)
@@ -59,3 +62,95 @@ describe('matchadd()', function()
}}, funcs.getmatches())
end)
end)
describe('matchaddpos()', function()
it('errors out on invalid input', function()
command('hi clear PreProc')
eq('Vim(let):E5030: Empty list at position 0',
exc_exec('let val = matchaddpos("PreProc", [[]])'))
eq('Vim(let):E5030: Empty list at position 1',
exc_exec('let val = matchaddpos("PreProc", [1, v:_null_list])'))
eq('Vim(let):E5031: List or number required at position 1',
exc_exec('let val = matchaddpos("PreProc", [1, v:_null_dict])'))
end)
it('works with 0 lnum', function()
command('hi clear PreProc')
eq(4, funcs.matchaddpos('PreProc', {1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
funcs.matchdelete(4)
eq(4, funcs.matchaddpos('PreProc', {{0}, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
funcs.matchdelete(4)
eq(4, funcs.matchaddpos('PreProc', {0, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
end)
it('works with negative numbers', function()
command('hi clear PreProc')
eq(4, funcs.matchaddpos('PreProc', {-10, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
funcs.matchdelete(4)
eq(4, funcs.matchaddpos('PreProc', {{-10}, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
funcs.matchdelete(4)
eq(4, funcs.matchaddpos('PreProc', {{2, -1}, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
funcs.matchdelete(4)
eq(4, funcs.matchaddpos('PreProc', {{2, 0, -1}, 1}, 3, 4))
eq({{
group='PreProc',
pos1 = {1},
priority=3,
id=4,
}}, funcs.getmatches())
end)
it('works with zero length', function()
local screen = Screen.new(40, 5)
screen:attach()
funcs.setline(1, 'abcdef')
command('hi PreProc guifg=Red')
eq(4, funcs.matchaddpos('PreProc', {{1, 2, 0}}, 3, 4))
eq({{
group='PreProc',
pos1 = {1, 2, 0},
priority=3,
id=4,
}}, funcs.getmatches())
screen:expect([[
^a{1:b}cdef |
{2:~ }|
{2:~ }|
{2:~ }|
|
]], {[1] = {foreground = Screen.colors.Red}, [2] = {bold = true, foreground = Screen.colors.Blue1}})
end)
end)