diff options
Diffstat (limited to 'src/userfunc.c')
| -rw-r--r-- | src/userfunc.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/userfunc.c b/src/userfunc.c index 7536234b82..e44397d81b 100644 --- a/src/userfunc.c +++ b/src/userfunc.c @@ -5503,6 +5503,47 @@ ex_function(exarg_T *eap) ga_clear_strings(&lines_to_free); } + int +get_func_arity(char_u *name, int *required, int *optional, int *varargs) +{ + ufunc_T *ufunc = NULL; + int argcount = 0; + int min_argcount = 0; + int idx; + + idx = find_internal_func(name); + if (idx >= 0) + { + internal_func_get_argcount(idx, &argcount, &min_argcount); + *varargs = FALSE; + } + else + { + char_u fname_buf[FLEN_FIXED + 1]; + char_u *tofree = NULL; + funcerror_T error = FCERR_NONE; + char_u *fname; + + // May need to translate <SNR>123_ to K_SNR. + fname = fname_trans_sid(name, fname_buf, &tofree, &error); + if (error == FCERR_NONE) + ufunc = find_func(fname, FALSE); + vim_free(tofree); + + if (ufunc == NULL) + return FAIL; + + argcount = ufunc->uf_args.ga_len; + min_argcount = ufunc->uf_args.ga_len - ufunc->uf_def_args.ga_len; + *varargs = has_varargs(ufunc); + } + + *required = min_argcount; + *optional = argcount - min_argcount; + + return OK; +} + /* * Find a function by name, including "<lambda>123". * Check for "profile" and "debug" arguments and set"compile_type". |