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fix(eval): skip over v:lua properly (#27517)

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Problem:  Error when parsing v:lua in a ternary expression.
Solution: Set rettv->v_type for v:lua even if not evaluating.
This commit is contained in:
zeertzjq 2024-02-18 19:11:44 +08:00 committed by GitHub
parent 796df966f3
commit b8c34efe33
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GPG Key ID: B5690EEEBB952194
3 changed files with 15 additions and 2 deletions
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13
src/nvim/eval.c
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@ -3238,6 +3238,13 @@ static int eval7(char **arg, typval_T *rettv, evalarg_T *const evalarg, bool wan
} else {
// skip the name
check_vars(s, (size_t)len);
// If evaluate is false rettv->v_type was not set, but it's needed
// in handle_subscript() to parse v:lua, so set it here.
if (rettv->v_type == VAR_UNKNOWN && !evaluate && strnequal(s, "v:lua.", 6)) {
rettv->v_type = VAR_PARTIAL;
rettv->vval.v_partial = vvlua_partial;
rettv->vval.v_partial->pt_refcount++;
}
ret = OK;
}
}
@ -3442,7 +3449,7 @@ static int eval_method(char **const arg, typval_T *const rettv, evalarg_T *const
int len;
char *name = *arg;
char *lua_funcname = NULL;
if (strncmp(name, "v:lua.", 6) == 0) {
if (strnequal(name, "v:lua.", 6)) {
lua_funcname = name + 6;
*arg = (char *)skip_luafunc_name(lua_funcname);
*arg = skipwhite(*arg); // to detect trailing whitespace later
@ -7614,6 +7621,10 @@ int handle_subscript(const char **const arg, typval_T *rettv, evalarg_T *const e
const char *lua_funcname = NULL;
if (tv_is_luafunc(rettv)) {
if (!evaluate) {
tv_clear(rettv);
}
if (**arg != '.') {
tv_clear(rettv);
ret = FAIL;

2
src/nvim/eval/funcs.c
View File

@ -1726,7 +1726,7 @@ static void f_exists(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
n = false; // Trailing garbage.
}
} else if (*p == '*') { // Internal or user defined function.
n = strncmp(p, "*v:lua.", 7) == 0 ? nlua_func_exists(p + 7) : function_exists(p + 1, false);
n = strnequal(p, "*v:lua.", 7) ? nlua_func_exists(p + 7) : function_exists(p + 1, false);
} else if (*p == ':') {
n = cmd_exists(p + 1);
} else if (*p == '#') {

2
test/functional/lua/luaeval_spec.lua
View File

@ -538,6 +538,8 @@ describe('v:lua', function()
eq('\tbadval', eval("v:lua.require'leftpad'('badval')"))
eq(9003, eval("v:lua.require'bar'.doit()"))
eq(9004, eval("v:lua.require'baz-quux'.doit()"))
eq(9003, eval("1 ? v:lua.require'bar'.doit() : v:lua.require'baz-quux'.doit()"))
eq(9004, eval("0 ? v:lua.require'bar'.doit() : v:lua.require'baz-quux'.doit()"))
end)
it('throw errors for invalid use', function()