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evalfunc.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* evalfunc.c: Builtin functions
*/
#define USING_FLOAT_STUFF
#include "vim.h"
#if defined(FEAT_EVAL) || defined(PROTO)
#ifdef VMS
# include <float.h>
#endif
static void f_and(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_BEVAL
static void f_balloon_gettext(typval_T *argvars, typval_T *rettv);
static void f_balloon_show(typval_T *argvars, typval_T *rettv);
# if defined(FEAT_BEVAL_TERM)
static void f_balloon_split(typval_T *argvars, typval_T *rettv);
# endif
#endif
static void f_base64_encode(typval_T *argvars, typval_T *rettv);
static void f_base64_decode(typval_T *argvars, typval_T *rettv);
static void f_bindtextdomain(typval_T *argvars, typval_T *rettv);
static void f_byte2line(typval_T *argvars, typval_T *rettv);
static void f_call(typval_T *argvars, typval_T *rettv);
static void f_changenr(typval_T *argvars, typval_T *rettv);
static void f_char2nr(typval_T *argvars, typval_T *rettv);
static void f_charcol(typval_T *argvars, typval_T *rettv);
static void f_col(typval_T *argvars, typval_T *rettv);
static void f_confirm(typval_T *argvars, typval_T *rettv);
static void f_copy(typval_T *argvars, typval_T *rettv);
static void f_cursor(typval_T *argsvars, typval_T *rettv);
#ifdef MSWIN
static void f_debugbreak(typval_T *argvars, typval_T *rettv);
#endif
static void f_deepcopy(typval_T *argvars, typval_T *rettv);
static void f_did_filetype(typval_T *argvars, typval_T *rettv);
static void f_echoraw(typval_T *argvars, typval_T *rettv);
static void f_empty(typval_T *argvars, typval_T *rettv);
static void f_environ(typval_T *argvars, typval_T *rettv);
static void f_err_teapot(typval_T *argvars, typval_T *rettv);
static void f_escape(typval_T *argvars, typval_T *rettv);
static void f_eval(typval_T *argvars, typval_T *rettv);
static void f_eventhandler(typval_T *argvars, typval_T *rettv);
static void f_execute(typval_T *argvars, typval_T *rettv);
static void f_exists_compiled(typval_T *argvars, typval_T *rettv);
static void f_expand(typval_T *argvars, typval_T *rettv);
static void f_expandcmd(typval_T *argvars, typval_T *rettv);
static void f_feedkeys(typval_T *argvars, typval_T *rettv);
static void f_fnameescape(typval_T *argvars, typval_T *rettv);
static void f_foreground(typval_T *argvars, typval_T *rettv);
static void f_funcref(typval_T *argvars, typval_T *rettv);
static void f_function(typval_T *argvars, typval_T *rettv);
static void f_garbagecollect(typval_T *argvars, typval_T *rettv);
static void f_get(typval_T *argvars, typval_T *rettv);
static void f_getcellpixels(typval_T *argvars, typval_T *rettv);
static void f_getchangelist(typval_T *argvars, typval_T *rettv);
static void f_getcharpos(typval_T *argvars, typval_T *rettv);
static void f_getcharsearch(typval_T *argvars, typval_T *rettv);
static void f_getcursorcharpos(typval_T *argvars, typval_T *rettv);
static void f_getenv(typval_T *argvars, typval_T *rettv);
static void f_getfontname(typval_T *argvars, typval_T *rettv);
static void f_getjumplist(typval_T *argvars, typval_T *rettv);
static void f_getpid(typval_T *argvars, typval_T *rettv);
static void f_getreg(typval_T *argvars, typval_T *rettv);
static void f_getreginfo(typval_T *argvars, typval_T *rettv);
static void f_getregionpos(typval_T *argvars, typval_T *rettv);
static void f_getregtype(typval_T *argvars, typval_T *rettv);
static void f_gettagstack(typval_T *argvars, typval_T *rettv);
static void f_gettext(typval_T *argvars, typval_T *rettv);
static void f_haslocaldir(typval_T *argvars, typval_T *rettv);
static void f_hlID(typval_T *argvars, typval_T *rettv);
static void f_hlexists(typval_T *argvars, typval_T *rettv);
static void f_hostname(typval_T *argvars, typval_T *rettv);
static void f_id(typval_T *argvars, typval_T *rettv);
static void f_index(typval_T *argvars, typval_T *rettv);
static void f_indexof(typval_T *argvars, typval_T *rettv);
static void f_input(typval_T *argvars, typval_T *rettv);
static void f_inputdialog(typval_T *argvars, typval_T *rettv);
static void f_inputlist(typval_T *argvars, typval_T *rettv);
static void f_inputrestore(typval_T *argvars, typval_T *rettv);
static void f_inputsave(typval_T *argvars, typval_T *rettv);
static void f_inputsecret(typval_T *argvars, typval_T *rettv);
static void f_interrupt(typval_T *argvars, typval_T *rettv);
static void f_invert(typval_T *argvars, typval_T *rettv);
static void f_islocked(typval_T *argvars, typval_T *rettv);
static void f_keytrans(typval_T *argvars, typval_T *rettv);
static void f_last_buffer_nr(typval_T *argvars, typval_T *rettv);
static void f_libcall(typval_T *argvars, typval_T *rettv);
static void f_libcallnr(typval_T *argvars, typval_T *rettv);
static void f_line(typval_T *argvars, typval_T *rettv);
static void f_line2byte(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_LUA
static void f_luaeval(typval_T *argvars, typval_T *rettv);
#endif
static void f_match(typval_T *argvars, typval_T *rettv);
static void f_matchbufline(typval_T *argvars, typval_T *rettv);
static void f_matchend(typval_T *argvars, typval_T *rettv);
static void f_matchlist(typval_T *argvars, typval_T *rettv);
static void f_matchstr(typval_T *argvars, typval_T *rettv);
static void f_matchstrlist(typval_T *argvars, typval_T *rettv);
static void f_matchstrpos(typval_T *argvars, typval_T *rettv);
static void f_max(typval_T *argvars, typval_T *rettv);
static void f_min(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_MZSCHEME
static void f_mzeval(typval_T *argvars, typval_T *rettv);
#endif
static void f_nextnonblank(typval_T *argvars, typval_T *rettv);
static void f_ngettext(typval_T *argvars, typval_T *rettv);
static void f_nr2char(typval_T *argvars, typval_T *rettv);
static void f_or(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_PERL
static void f_perleval(typval_T *argvars, typval_T *rettv);
#endif
static void f_prevnonblank(typval_T *argvars, typval_T *rettv);
static void f_printf(typval_T *argvars, typval_T *rettv);
static void f_pum_getpos(typval_T *argvars, typval_T *rettv);
static void f_pumvisible(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_PYTHON3
static void f_py3eval(typval_T *argvars, typval_T *rettv);
#endif
#ifdef FEAT_PYTHON
static void f_pyeval(typval_T *argvars, typval_T *rettv);
#endif
#if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3)
static void f_pyxeval(typval_T *argvars, typval_T *rettv);
#endif
static void f_test_srand_seed(typval_T *argvars, typval_T *rettv);
static void f_rand(typval_T *argvars, typval_T *rettv);
static void f_range(typval_T *argvars, typval_T *rettv);
static void f_reg_executing(typval_T *argvars, typval_T *rettv);
static void f_reg_recording(typval_T *argvars, typval_T *rettv);
static void f_rename(typval_T *argvars, typval_T *rettv);
static void f_repeat(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_RUBY
static void f_rubyeval(typval_T *argvars, typval_T *rettv);
#endif
static void f_screenattr(typval_T *argvars, typval_T *rettv);
static void f_screenchar(typval_T *argvars, typval_T *rettv);
static void f_screenchars(typval_T *argvars, typval_T *rettv);
static void f_screencol(typval_T *argvars, typval_T *rettv);
static void f_screenrow(typval_T *argvars, typval_T *rettv);
static void f_screenstring(typval_T *argvars, typval_T *rettv);
static void f_search(typval_T *argvars, typval_T *rettv);
static void f_searchdecl(typval_T *argvars, typval_T *rettv);
static void f_searchpair(typval_T *argvars, typval_T *rettv);
static void f_searchpairpos(typval_T *argvars, typval_T *rettv);
static void f_searchpos(typval_T *argvars, typval_T *rettv);
static void f_setcharpos(typval_T *argvars, typval_T *rettv);
static void f_setcharsearch(typval_T *argvars, typval_T *rettv);
static void f_setcursorcharpos(typval_T *argvars, typval_T *rettv);
static void f_setenv(typval_T *argvars, typval_T *rettv);
static void f_setfperm(typval_T *argvars, typval_T *rettv);
static void f_setpos(typval_T *argvars, typval_T *rettv);
static void f_setreg(typval_T *argvars, typval_T *rettv);
static void f_settagstack(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_CRYPT
static void f_sha256(typval_T *argvars, typval_T *rettv);
#endif
static void f_shellescape(typval_T *argvars, typval_T *rettv);
static void f_shiftwidth(typval_T *argvars, typval_T *rettv);
static void f_soundfold(typval_T *argvars, typval_T *rettv);
static void f_spellbadword(typval_T *argvars, typval_T *rettv);
static void f_spellsuggest(typval_T *argvars, typval_T *rettv);
static void f_split(typval_T *argvars, typval_T *rettv);
static void f_srand(typval_T *argvars, typval_T *rettv);
static void f_submatch(typval_T *argvars, typval_T *rettv);
static void f_substitute(typval_T *argvars, typval_T *rettv);
static void f_swapfilelist(typval_T *argvars, typval_T *rettv);
static void f_swapinfo(typval_T *argvars, typval_T *rettv);
static void f_swapname(typval_T *argvars, typval_T *rettv);
static void f_synID(typval_T *argvars, typval_T *rettv);
static void f_synIDattr(typval_T *argvars, typval_T *rettv);
static void f_synIDtrans(typval_T *argvars, typval_T *rettv);
static void f_synstack(typval_T *argvars, typval_T *rettv);
static void f_synconcealed(typval_T *argvars, typval_T *rettv);
static void f_tabpagebuflist(typval_T *argvars, typval_T *rettv);
static void f_taglist(typval_T *argvars, typval_T *rettv);
static void f_tagfiles(typval_T *argvars, typval_T *rettv);
static void f_type(typval_T *argvars, typval_T *rettv);
static void f_virtcol(typval_T *argvars, typval_T *rettv);
static void f_visualmode(typval_T *argvars, typval_T *rettv);
static void f_wildmenumode(typval_T *argvars, typval_T *rettv);
static void f_windowsversion(typval_T *argvars, typval_T *rettv);
static void f_wordcount(typval_T *argvars, typval_T *rettv);
static void f_xor(typval_T *argvars, typval_T *rettv);
/*
* Functions that check the argument type of a builtin function.
* Each function returns FAIL and gives an error message if the type is wrong.
*/
// Context passed to an arg_ function.
typedef struct {
int arg_count; // actual argument count
type2_T *arg_types; // list of argument types
int arg_idx; // current argument index (first arg is zero)
cctx_T *arg_cctx;
} argcontext_T;
// A function to check one argument type. The first argument is the type to
// check. If needed, other argument types can be obtained with the context.
// E.g. if "arg_idx" is 1, then (type - 1) is the first argument type.
// NOTE: Use "arg_any", not NULL, in funcentry_T.f_argcheck array
// to accept an argument of any type.
typedef int (*argcheck_T)(type_T *, type_T *, argcontext_T *);
/*
* Call need_type() to check an argument type.
*/
static int
check_arg_type(
type_T *expected,
type_T *actual,
argcontext_T *context)
{
return need_type(actual, expected, FALSE,
context->arg_idx - context->arg_count, context->arg_idx + 1,
context->arg_cctx, FALSE, FALSE);
}
/*
* Call need_type() to check an argument type and that it is modifiable
*/
static int
check_arg_type_mod(
type_T *expected,
type_T *actual,
argcontext_T *context)
{
if (need_type(actual, expected, FALSE,
context->arg_idx - context->arg_count, context->arg_idx + 1,
context->arg_cctx, FALSE, FALSE) == FAIL)
return FAIL;
return arg_type_modifiable(actual, context->arg_idx + 1);
}
/*
* Give an error if "type" is a constant.
*/
int
arg_type_modifiable(type_T *type, int arg_idx)
{
char *tofree;
if ((type->tt_flags & TTFLAG_CONST) == 0)
return OK;
semsg(_(e_argument_nr_trying_to_modify_const_str),
arg_idx, type_name(type, &tofree));
vim_free(tofree);
return FAIL;
}
/*
* Return OK for any type unconditionally.
*/
static int
arg_any(type_T *type UNUSED,
type_T *decl_type UNUSED,
argcontext_T *context UNUSED)
{
return OK;
}
/*
* Check "type" is a float or a number.
*/
static int
arg_float_or_nr(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_FLOAT
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_number, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a number.
*/
static int
arg_number(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_number, type, context);
}
/*
* Check "type" is an object.
*/
static int
arg_object(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_OBJECT
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_object, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a dict of 'any'.
*/
static int
arg_dict_any(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_dict_any, type, context);
}
/*
* Check "type" is a list of 'any'.
*/
static int
arg_list_any(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_list_any, type, context);
}
/*
* Check "type" is a list of 'any' and modifiable
*/
static int
arg_list_any_mod(
type_T *type,
type_T *decl_type UNUSED,
argcontext_T *context)
{
return check_arg_type_mod(&t_list_any, type, context);
}
/*
* Check "type" is a list of numbers.
*/
static int
arg_list_number(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_list_number, type, context);
}
/*
* Check "type" is a list of strings.
*/
static int
arg_list_string(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_list_string, type, context);
}
/*
* Check "type" is a string.
*/
static int
arg_string(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_string, type, context);
}
/*
* Check "type" is a blob
*/
static int
arg_blob(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_blob, type, context);
}
/*
* Check "type" is a bool or number 0 or 1.
*/
static int
arg_bool(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_bool, type, context);
}
/*
* Check "type" is a bool or a number.
*/
static int
arg_bool_or_nr(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_BOOL
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_number, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a list of 'any' or a blob.
*/
static int
arg_list_or_blob(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_LIST
|| type->tt_type == VAR_BLOB
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a modifiable list of 'any' or a blob.
*/
static int
arg_list_or_blob_mod(
type_T *type,
type_T *decl_type,
argcontext_T *context)
{
if (arg_list_or_blob(type, decl_type, context) == FAIL)
return FAIL;
return arg_type_modifiable(type, context->arg_idx + 1);
}
/*
* Check "type" is a string or a number
*/
static int
arg_string_or_nr(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a buffer (string or a number)
*/
static int
arg_buffer(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a buffer or a dict of any
*/
static int
arg_buffer_or_dict_any(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_NUMBER
|| type->tt_type == VAR_DICT
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a line (string or a number)
*/
static int
arg_lnum(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a string or a list of strings.
*/
static int
arg_string_or_list_string(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type_any_or_unknown(type))
return OK;
if (type->tt_type != VAR_LIST)
{
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
if (type->tt_member->tt_type == VAR_ANY
|| type->tt_member->tt_type == VAR_STRING)
return OK;
arg_type_mismatch(&t_list_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a string or a list of 'any'
*/
static int
arg_string_or_list_any(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_LIST
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a string or a dict of 'any'
*/
static int
arg_string_or_dict_any(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_DICT
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a string or a blob
*/
static int
arg_string_or_blob(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_BLOB
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a list of 'any' or a dict of 'any'.
*/
static int
arg_list_or_dict(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_LIST
|| type->tt_type == VAR_DICT
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a list of 'any' or a dict of 'any'. And modifiable.
*/
static int
arg_list_or_dict_mod(
type_T *type,
type_T *decl_type,
argcontext_T *context)
{
if (arg_list_or_dict(type, decl_type, context) == FAIL)
return FAIL;
return arg_type_modifiable(type, context->arg_idx + 1);
}
/*
* Check "type" is a list of 'any' or a dict of 'any' or a blob.
* Also check if "type" is modifiable.
*/
static int
arg_list_or_dict_or_blob_mod(
type_T *type,
type_T *decl_type UNUSED,
argcontext_T *context)
{
if (type->tt_type == VAR_LIST
|| type->tt_type == VAR_DICT
|| type->tt_type == VAR_BLOB
|| type_any_or_unknown(type))
return arg_type_modifiable(type, context->arg_idx + 1);
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a list of 'any' or a dict of 'any' or a blob or a string.
*/
static int
arg_list_or_dict_or_blob_or_string(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_LIST
|| type->tt_type == VAR_DICT
|| type->tt_type == VAR_BLOB
|| type->tt_type == VAR_STRING
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a list of 'any' or a dict of 'any' or a blob or a string.
* Also check the value is modifiable.
*/
static int
arg_list_or_dict_or_blob_or_string_mod(
type_T *type,
type_T *decl_type,
argcontext_T *context)
{
if (arg_list_or_dict_or_blob_or_string(type, decl_type, context) == FAIL)
return FAIL;
return arg_type_modifiable(type, context->arg_idx + 1);
}
/*
* Check second argument of map(), filter(), foreach().
*/
static int
check_map_filter_arg2(type_T *type, argcontext_T *context,
filtermap_T filtermap)
{
type_T *expected_member = NULL;
type_T *(args[2]);
type_T t_func_exp = {VAR_FUNC, 2, 0, 0, NULL, NULL, args};
if (context->arg_types[0].type_curr->tt_type == VAR_LIST
|| context->arg_types[0].type_curr->tt_type == VAR_DICT)
{
// Use the declared type if possible, so that an error is given if
// a declared list changes type, but not if a constant list changes
// type.
if (context->arg_types[0].type_decl->tt_type == VAR_LIST
|| context->arg_types[0].type_decl->tt_type == VAR_DICT)
expected_member = context->arg_types[0].type_decl->tt_member;
else
expected_member = context->arg_types[0].type_curr->tt_member;
}
else if (context->arg_types[0].type_curr->tt_type == VAR_STRING)
expected_member = &t_string;
else if (context->arg_types[0].type_curr->tt_type == VAR_BLOB)
expected_member = &t_number;
args[0] = NULL;
args[1] = &t_unknown;
if (type->tt_argcount != -1)
{
if (!(type->tt_argcount == 2 || (type->tt_argcount == 1
&& (type->tt_flags & TTFLAG_VARARGS))))
{
emsg(_(e_invalid_number_of_arguments));
return FAIL;
}
if (type->tt_flags & TTFLAG_VARARGS)
// check the argument types at runtime
t_func_exp.tt_argcount = -1;
else
{
if (context->arg_types[0].type_curr->tt_type == VAR_STRING
|| context->arg_types[0].type_curr->tt_type == VAR_BLOB
|| context->arg_types[0].type_curr->tt_type == VAR_LIST)
args[0] = &t_number;
else if (context->arg_types[0].type_decl->tt_type == VAR_DICT)
args[0] = &t_string;
if (args[0] != NULL)
args[1] = expected_member;
}
}
if (!type_any_or_unknown(type->tt_member) || args[0] != NULL)
{
where_T where = WHERE_INIT;
if (filtermap == FILTERMAP_MAP)
t_func_exp.tt_member = expected_member == NULL
|| type_any_or_unknown(type->tt_member)
? &t_any : expected_member;
else if (filtermap == FILTERMAP_FILTER)
t_func_exp.tt_member = &t_bool;
else // filtermap == FILTERMAP_FOREACH
t_func_exp.tt_member = &t_unknown;
if (args[0] == NULL)
args[0] = &t_unknown;
if (type->tt_argcount == -1)
t_func_exp.tt_argcount = -1;
where.wt_index = 2;
where.wt_kind = WT_ARGUMENT;
return check_type(&t_func_exp, type, TRUE, where);
}
return OK;
}
/*
* Check second argument of filter(): func must return a bool.
*/
static int
arg_filter_func(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_PARTIAL
|| type_any_or_unknown(type))
return OK;
if (type->tt_type == VAR_FUNC)
return check_map_filter_arg2(type, context, FILTERMAP_FILTER);
semsg(_(e_string_or_function_required_for_argument_nr), 2);
return FAIL;
}
/*
* Check second argument of map(), the function.
*/
static int
arg_map_func(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_PARTIAL
|| type_any_or_unknown(type))
return OK;
if (type->tt_type == VAR_FUNC)
return check_map_filter_arg2(type, context, FILTERMAP_MAP);
semsg(_(e_string_or_function_required_for_argument_nr), 2);
return FAIL;
}
/*
* Check second argument of foreach(), the function.
*/
static int
arg_foreach_func(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_PARTIAL
|| type_any_or_unknown(type))
return OK;
if (type->tt_type == VAR_FUNC)
return check_map_filter_arg2(type, context, FILTERMAP_FOREACH);
semsg(_(e_string_or_function_required_for_argument_nr), 2);
return FAIL;
}
/*
* Check second argument of sort() and uniq(), the "how" argument.
*/
static int
arg_sort_how(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_PARTIAL
|| type_any_or_unknown(type))
return OK;
if (type->tt_type == VAR_FUNC)
{
type_T *(args[2]);
type_T t_func_exp = {VAR_FUNC, 2, 0, 0, &t_number, NULL, args};
if (context->arg_types[0].type_curr->tt_type == VAR_LIST)
args[0] = context->arg_types[0].type_curr->tt_member;
else
args[0] = &t_unknown;
if (!type_any_or_unknown(type->tt_member) || args[0] != &t_unknown)
{
where_T where = WHERE_INIT;
args[1] = args[0];
if (type->tt_argcount == -1)
t_func_exp.tt_argcount = -1;
where.wt_index = 2;
where.wt_kind = WT_ARGUMENT;
return check_type(&t_func_exp, type, TRUE, where);
}
return OK;
}
semsg(_(e_string_or_function_required_for_argument_nr), 2);
return FAIL;
}
/*
* Check an expression argument, can be a string, funcref or partial.
* Also accept a bool, a constant resulting from compiling a string argument.
* Also accept a number, one and zero are accepted.
*/
static int
arg_string_or_func(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_PARTIAL
|| type->tt_type == VAR_FUNC
|| type->tt_type == VAR_BOOL
|| type->tt_type == VAR_NUMBER
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_func_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check varargs' "type" are class.
*/
static int
varargs_class(type_T *type UNUSED,
type_T *decl_type UNUSED,
argcontext_T *context)
{
for (int i = context->arg_idx; i < context->arg_count; ++i)
{
type2_T *types = &context->arg_types[i];
if (types->type_curr->tt_type != VAR_CLASS)
{
semsg(_(e_class_or_typealias_required_for_argument_nr), i + 1);
return FAIL;
}
}
return OK;
}
/*
* Check "type" is a list of 'any' or a blob or a string.
*/
static int
arg_string_list_or_blob(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_LIST
|| type->tt_type == VAR_BLOB
|| type->tt_type == VAR_STRING
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a modifiable list of 'any' or a blob or a string.
*/
static int
arg_string_list_or_blob_mod(type_T *type, type_T *decl_type, argcontext_T *context)
{
if (arg_string_list_or_blob(type, decl_type, context) == FAIL)
return FAIL;
return arg_type_modifiable(type, context->arg_idx + 1);
}
/*
* Check "type" is a job.
*/
static int
arg_job(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
return check_arg_type(&t_job, type, context);
}
/*
* Check "type" is a channel or a job.
*/
static int
arg_chan_or_job(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_CHANNEL
|| type->tt_type == VAR_JOB
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_channel, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" can be used as the type_decl of the previous argument.
* Must not be used for the first argcheck_T entry.
*/
static int
arg_same_as_prev(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
type_T *prev_type = context->arg_types[context->arg_idx - 1].type_decl;
return check_arg_type(prev_type, type, context);
}
/*
* Check "type" is the same basic type as the previous argument, checks list or
* dict vs other type, but not member type.
* Must not be used for the first argcheck_T entry.
*/
static int
arg_same_struct_as_prev(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
type_T *prev_type = context->arg_types[context->arg_idx - 1].type_curr;
if (prev_type->tt_type != context->arg_types[context->arg_idx].type_curr->tt_type)
return check_arg_type(prev_type, type, context);
return OK;
}
/*
* Check "type" is an item of the list or blob of the previous arg.
* Must not be used for the first argcheck_T entry.
*/
static int
arg_item_of_prev(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
type_T *prev_type = context->arg_types[context->arg_idx - 1].type_curr;
type_T *expected;
if (prev_type->tt_type == VAR_LIST)
expected = prev_type->tt_member;
else if (prev_type->tt_type == VAR_BLOB)
expected = &t_number;
else
// probably VAR_ANY, can't check
return OK;
return check_arg_type(expected, type, context);
}
/*
* Check "type" is a string or a number or a list
*/
static int
arg_str_or_nr_or_list(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_STRING
|| type->tt_type == VAR_NUMBER
|| type->tt_type == VAR_LIST
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" is a dict of 'any' or a string
*/
static int
arg_dict_any_or_string(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_DICT
|| type->tt_type == VAR_STRING
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_string, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" which is the third argument of extend() (number or string or
* any)
*/
static int
arg_extend3(type_T *type, type_T *decl_type, argcontext_T *context)
{
type_T *first_type = context->arg_types[context->arg_idx - 2].type_curr;
if (first_type->tt_type == VAR_LIST)
return arg_number(type, decl_type, context);
if (first_type->tt_type == VAR_DICT)
return arg_string(type, decl_type, context);
return OK;
}
/*
* Check "type" which is the first argument of get() (blob or list or dict or
* funcref)
*/
static int
arg_get1(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
{
if (type->tt_type == VAR_BLOB
|| type->tt_type == VAR_LIST
|| type->tt_type == VAR_DICT
|| type->tt_type == VAR_FUNC
|| type->tt_type == VAR_PARTIAL
|| type_any_or_unknown(type))
return OK;
arg_type_mismatch(&t_list_any, type, context->arg_idx + 1);
return FAIL;
}
/*
* Check "type" which is the first argument of len() (number or string or
* blob or list or dict)
*/
static int
arg_len1(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)