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eval/typval: Make tv_list_concat handle NULL lists correctly

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Fixes some FIXMEs in eval/null_spec.lua.
This commit is contained in:
ZyX 2016-09-18 01:59:07 +03:00
parent 82e6cac5f9
commit f80a00469f
2 changed files with 20 additions and 19 deletions
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27
src/nvim/eval/typval.c
View File

@ -498,20 +498,25 @@ void tv_list_extend(list_T *const l1, list_T *const l2,
int tv_list_concat(list_T *const l1, list_T *const l2, typval_T *const tv)
FUNC_ATTR_WARN_UNUSED_RESULT
{
if (l1 == NULL || l2 == NULL) {
return FAIL;
}
list_T *l;
// make a copy of the first list.
list_T *const l = tv_list_copy(NULL, l1, false, 0);
if (l == NULL) {
return FAIL;
}
tv->v_type = VAR_LIST;
tv->vval.v_list = l;
// append all items from the second list
tv_list_extend(l, l2, NULL);
if (l1 == NULL && l2 == NULL) {
l = NULL;
} else if (l1 == NULL) {
l = tv_list_copy(NULL, l2, false, 0);
} else {
l = tv_list_copy(NULL, l1, false, 0);
if (l != NULL && l2 != NULL) {
tv_list_extend(l, l2, NULL);
}
}
if (l == NULL && !(l1 == NULL && l2 == NULL)) {
return FAIL;
}
tv->vval.v_list = l;
return OK;
}

12
test/functional/eval/null_spec.lua
View File

@ -61,14 +61,6 @@ describe('NULL', function()
null_list_expr_test('is equal to itself', 'L == L', 0, 0)
-- FIXME Should return 0
null_list_expr_test('is not not equal to itself', 'L != L', 0, 1)
-- FIXME Should return empty list
null_list_expr_test('can be added to itself', '(L + L)', 'E15: Invalid expression: (L + L)', nil)
-- FIXME Should return [1]
null_list_expr_test('can be added to non-empty list (reversed)', '(L + [1])',
'E15: Invalid expression: (L + [1])', nil)
-- FIXME Should return [1]
null_list_expr_test('can be added to non-empty list', '([1] + L)',
'E15: Invalid expression: ([1] + L)', nil)
-- FIXME Should return 1
null_list_expr_test('counts correctly', 'count([L], L)', 0, 0)
-- FIXME should be accepted by inputlist()
@ -137,5 +129,9 @@ describe('NULL', function()
null_list_expr_test('is stringified correctly', 'string(L)', 0, '[]')
null_list_expr_test('is JSON encoded correctly', 'json_encode(L)', 0, '[]')
null_list_test('does not crash lockvar', 'lockvar! L', 0)
null_list_expr_test('can be added to itself', '(L + L)', 0, {})
null_list_expr_test('can be added to itself', '(L + L) is L', 0, 1)
null_list_expr_test('can be added to non-empty list', '([1] + L)', 0, {1})
null_list_expr_test('can be added to non-empty list (reversed)', '(L + [1])', 0, {1})
end)
end)