root/vm_args.c
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DEFINITIONS
This source file includes following definitions.
- args_argc
- args_extend
- args_reduce
- args_check_block_arg0
- args_copy
- args_rest_argv
- args_rest_array
- keyword_hash_p
- args_pop_keyword_hash
- args_kw_argv_to_hash
- args_stored_kw_argv_to_hash
- args_setup_lead_parameters
- args_setup_post_parameters
- args_setup_opt_parameters
- args_setup_rest_parameter
- make_unused_kw_hash
- args_setup_kw_parameters_lookup
- args_setup_kw_parameters
- args_setup_kw_rest_parameter
- args_setup_block_parameter
- fill_keys_values
- setup_parameters_complex
- raise_argument_error
- argument_arity_error
- argument_kw_error
- vm_caller_setup_arg_splat
- vm_caller_setup_arg_kw
- vm_caller_setup_arg_block
/**********************************************************************
vm_args.c - process method call arguments.
$Author$
Copyright (C) 2014- Yukihiro Matsumoto
**********************************************************************/
NORETURN(static void raise_argument_error(rb_thread_t *th, const rb_iseq_t *iseq, const VALUE exc));
NORETURN(static void argument_arity_error(rb_thread_t *th, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc));
NORETURN(static void argument_kw_error(rb_thread_t *th, const rb_iseq_t *iseq, const char *error, const VALUE keys));
VALUE rb_keyword_error_new(const char *error, VALUE keys); /* class.c */
struct args_info {
/* basic args info */
VALUE *argv;
int argc;
const struct rb_call_info_kw_arg *kw_arg;
/* additional args info */
int rest_index;
VALUE *kw_argv;
VALUE rest;
};
enum arg_setup_type {
arg_setup_method,
arg_setup_block,
arg_setup_lambda
};
static inline int
args_argc(struct args_info *args)
{
if (args->rest == Qfalse) {
return args->argc;
}
else {
return args->argc + RARRAY_LENINT(args->rest) - args->rest_index;
}
}
static inline void
args_extend(struct args_info *args, const int min_argc)
{
int i;
if (args->rest) {
args->rest = rb_ary_dup(args->rest);
VM_ASSERT(args->rest_index == 0);
for (i=args->argc + RARRAY_LENINT(args->rest); i<min_argc; i++) {
rb_ary_push(args->rest, Qnil);
}
}
else {
for (i=args->argc; i<min_argc; i++) {
args->argv[args->argc++] = Qnil;
}
}
}
static inline void
args_reduce(struct args_info *args, int over_argc)
{
if (args->rest) {
const long len = RARRAY_LEN(args->rest);
if (len > over_argc) {
args->rest = rb_ary_dup(args->rest);
rb_ary_resize(args->rest, len - over_argc);
return;
}
else {
args->rest = Qfalse;
over_argc -= len;
}
}
VM_ASSERT(args->argc >= over_argc);
args->argc -= over_argc;
}
static inline int
args_check_block_arg0(struct args_info *args, rb_thread_t *th)
{
VALUE ary = Qnil;
if (args->rest && RARRAY_LEN(args->rest) == 1) {
VALUE arg0 = RARRAY_AREF(args->rest, 0);
ary = rb_check_array_type(arg0);
}
else if (args->argc == 1) {
VALUE arg0 = args->argv[0];
ary = rb_check_array_type(arg0);
args->argv[0] = arg0; /* see: https://bugs.ruby-lang.org/issues/8484 */
}
if (!NIL_P(ary)) {
args->rest = ary;
args->rest_index = 0;
args->argc = 0;
return TRUE;
}
return FALSE;
}
static inline void
args_copy(struct args_info *args)
{
if (args->rest != Qfalse) {
int argc = args->argc;
args->argc = 0;
args->rest = rb_ary_dup(args->rest); /* make dup */
/*
* argv: [m0, m1, m2, m3]
* rest: [a0, a1, a2, a3, a4, a5]
* ^
* rest_index
*
* #=> first loop
*
* argv: [m0, m1]
* rest: [m2, m3, a2, a3, a4, a5]
* ^
* rest_index
*
* #=> 2nd loop
*
* argv: [] (argc == 0)
* rest: [m0, m1, m2, m3, a2, a3, a4, a5]
* ^
* rest_index
*/
while (args->rest_index > 0 && argc > 0) {
RARRAY_ASET(args->rest, --args->rest_index, args->argv[--argc]);
}
while (argc > 0) {
rb_ary_unshift(args->rest, args->argv[--argc]);
}
}
else if (args->argc > 0) {
args->rest = rb_ary_new_from_values(args->argc, args->argv);
args->rest_index = 0;
args->argc = 0;
}
}
static inline const VALUE *
args_rest_argv(struct args_info *args)
{
return RARRAY_CONST_PTR(args->rest) + args->rest_index;
}
static inline VALUE
args_rest_array(struct args_info *args)
{
VALUE ary;
if (args->rest) {
ary = rb_ary_subseq(args->rest, args->rest_index, RARRAY_LEN(args->rest) - args->rest_index);
args->rest = 0;
}
else {
ary = rb_ary_new();
}
return ary;
}
static int
keyword_hash_p(VALUE *kw_hash_ptr, VALUE *rest_hash_ptr, rb_thread_t *th)
{
*rest_hash_ptr = rb_check_hash_type(*kw_hash_ptr);
if (!NIL_P(*rest_hash_ptr)) {
VALUE hash = rb_extract_keywords(rest_hash_ptr);
if (!hash) hash = Qnil;
*kw_hash_ptr = hash;
return TRUE;
}
else {
*kw_hash_ptr = Qnil;
return FALSE;
}
}
static VALUE
args_pop_keyword_hash(struct args_info *args, VALUE *kw_hash_ptr, rb_thread_t *th)
{
VALUE rest_hash;
if (args->rest == Qfalse) {
from_argv:
VM_ASSERT(args->argc > 0);
*kw_hash_ptr = args->argv[args->argc-1];
if (keyword_hash_p(kw_hash_ptr, &rest_hash, th)) {
if (rest_hash) {
args->argv[args->argc-1] = rest_hash;
}
else {
args->argc--;
return TRUE;
}
}
}
else {
long len = RARRAY_LEN(args->rest);
if (len > 0) {
*kw_hash_ptr = RARRAY_AREF(args->rest, len - 1);
if (keyword_hash_p(kw_hash_ptr, &rest_hash, th)) {
if (rest_hash) {
RARRAY_ASET(args->rest, len - 1, rest_hash);
}
else {
args->rest = rb_ary_dup(args->rest);
rb_ary_pop(args->rest);
return TRUE;
}
}
}
else {
goto from_argv;
}
}
return FALSE;
}
static int
args_kw_argv_to_hash(struct args_info *args)
{
const struct rb_call_info_kw_arg *kw_arg = args->kw_arg;
const VALUE *const passed_keywords = kw_arg->keywords;
const int kw_len = kw_arg->keyword_len;
VALUE h = rb_hash_new();
const int kw_start = args->argc - kw_len;
const VALUE * const kw_argv = args->argv + kw_start;
int i;
args->argc = kw_start + 1;
for (i=0; i<kw_len; i++) {
rb_hash_aset(h, passed_keywords[i], kw_argv[i]);
}
args->argv[args->argc - 1] = h;
return args->argc;
}
static void
args_stored_kw_argv_to_hash(struct args_info *args)
{
VALUE h = rb_hash_new();
int i;
const struct rb_call_info_kw_arg *kw_arg = args->kw_arg;
const VALUE *const passed_keywords = kw_arg->keywords;
const int passed_keyword_len = kw_arg->keyword_len;
for (i=0; i<passed_keyword_len; i++) {
rb_hash_aset(h, passed_keywords[i], args->kw_argv[i]);
}
args->kw_argv = NULL;
if (args->rest) {
args->rest = rb_ary_dup(args->rest);
rb_ary_push(args->rest, h);
}
else {
args->argv[args->argc++] = h;
}
}
static inline void
args_setup_lead_parameters(struct args_info *args, int argc, VALUE *locals)
{
if (args->argc >= argc) {
/* do noting */
args->argc -= argc;
args->argv += argc;
}
else {
int i, j;
const VALUE *argv = args_rest_argv(args);
for (i=args->argc, j=0; i<argc; i++, j++) {
locals[i] = argv[j];
}
args->rest_index += argc - args->argc;
args->argc = 0;
}
}
static inline void
args_setup_post_parameters(struct args_info *args, int argc, VALUE *locals)
{
long len;
args_copy(args);
len = RARRAY_LEN(args->rest);
MEMCPY(locals, RARRAY_CONST_PTR(args->rest) + len - argc, VALUE, argc);
rb_ary_resize(args->rest, len - argc);
}
static inline int
args_setup_opt_parameters(struct args_info *args, int opt_max, VALUE *locals)
{
int i;
if (args->argc >= opt_max) {
args->argc -= opt_max;
args->argv += opt_max;
i = opt_max;
}
else {
int j;
i = args->argc;
args->argc = 0;
if (args->rest) {
int len = RARRAY_LENINT(args->rest);
const VALUE *argv = RARRAY_CONST_PTR(args->rest);
for (; i<opt_max && args->rest_index < len; i++, args->rest_index++) {
locals[i] = argv[args->rest_index];
}
}
/* initialize by nil */
for (j=i; j<opt_max; j++) {
locals[j] = Qnil;
}
}
return i;
}
static inline void
args_setup_rest_parameter(struct args_info *args, VALUE *locals)
{
args_copy(args);
*locals = args_rest_array(args);
}
static VALUE
make_unused_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv, const int key_only)
{
int i;
VALUE obj = key_only ? rb_ary_tmp_new(1) : rb_hash_new();
for (i=0; i<passed_keyword_len; i++) {
if (kw_argv[i] != Qundef) {
if (key_only) {
rb_ary_push(obj, passed_keywords[i]);
}
else {
rb_hash_aset(obj, passed_keywords[i], kw_argv[i]);
}
}
}
return obj;
}
static inline int
args_setup_kw_parameters_lookup(const ID key, VALUE *ptr, const VALUE *const passed_keywords, VALUE *passed_values, const int passed_keyword_len)
{
int i;
const VALUE keyname = ID2SYM(key);
for (i=0; i<passed_keyword_len; i++) {
if (keyname == passed_keywords[i]) {
*ptr = passed_values[i];
passed_values[i] = Qundef;
return TRUE;
}
}
return FALSE;
}
static void
args_setup_kw_parameters(VALUE* const passed_values, const int passed_keyword_len, const VALUE *const passed_keywords,
const rb_iseq_t * const iseq, VALUE * const locals)
{
const ID *acceptable_keywords = iseq->body->param.keyword->table;
const int req_key_num = iseq->body->param.keyword->required_num;
const int key_num = iseq->body->param.keyword->num;
const VALUE * const default_values = iseq->body->param.keyword->default_values;
VALUE missing = 0;
int i, di, found = 0;
int unspecified_bits = 0;
VALUE unspecified_bits_value = Qnil;
for (i=0; i<req_key_num; i++) {
ID key = acceptable_keywords[i];
if (args_setup_kw_parameters_lookup(key, &locals[i], passed_keywords, passed_values, passed_keyword_len)) {
found++;
}
else {
if (!missing) missing = rb_ary_tmp_new(1);
rb_ary_push(missing, ID2SYM(key));
}
}
if (missing) argument_kw_error(GET_THREAD(), iseq, "missing", missing);
for (di=0; i<key_num; i++, di++) {
if (args_setup_kw_parameters_lookup(acceptable_keywords[i], &locals[i], passed_keywords, passed_values, passed_keyword_len)) {
found++;
}
else {
if (default_values[di] == Qundef) {
locals[i] = Qnil;
if (LIKELY(i < 32)) { /* TODO: 32 -> Fixnum's max bits */
unspecified_bits |= 0x01 << di;
}
else {
if (NIL_P(unspecified_bits_value)) {
/* fixnum -> hash */
int j;
unspecified_bits_value = rb_hash_new();
for (j=0; j<32; j++) {
if (unspecified_bits & (0x01 << j)) {
rb_hash_aset(unspecified_bits_value, INT2FIX(j), Qtrue);
}
}
}
rb_hash_aset(unspecified_bits_value, INT2FIX(di), Qtrue);
}
}
else {
locals[i] = default_values[di];
}
}
}
if (iseq->body->param.flags.has_kwrest) {
const int rest_hash_index = key_num + 1;
locals[rest_hash_index] = make_unused_kw_hash(passed_keywords, passed_keyword_len, passed_values, FALSE);
}
else {
if (found != passed_keyword_len) {
VALUE keys = make_unused_kw_hash(passed_keywords, passed_keyword_len, passed_values, TRUE);
argument_kw_error(GET_THREAD(), iseq, "unknown", keys);
}
}
if (NIL_P(unspecified_bits_value)) {
unspecified_bits_value = INT2FIX(unspecified_bits);
}
locals[key_num] = unspecified_bits_value;
}
static inline void
args_setup_kw_rest_parameter(VALUE keyword_hash, VALUE *locals)
{
locals[0] = NIL_P(keyword_hash) ? rb_hash_new() : rb_hash_dup(keyword_hash);
}
static inline void
args_setup_block_parameter(rb_thread_t *th, struct rb_calling_info *calling, VALUE *locals)
{
VALUE blockval = Qnil;
const rb_block_t *blockptr = calling->blockptr;
if (blockptr) {
/* make Proc object */
if (blockptr->proc == 0) {
rb_proc_t *proc;
blockval = rb_vm_make_proc(th, blockptr, rb_cProc);
GetProcPtr(blockval, proc);
calling->blockptr = &proc->block;
}
else if (SYMBOL_P(blockptr->proc)) {
blockval = rb_sym_to_proc(blockptr->proc);
}
else {
blockval = blockptr->proc;
}
}
*locals = blockval;
}
struct fill_values_arg {
VALUE *keys;
VALUE *vals;
int argc;
};
static int
fill_keys_values(st_data_t key, st_data_t val, st_data_t ptr)
{
struct fill_values_arg *arg = (struct fill_values_arg *)ptr;
int i = arg->argc++;
arg->keys[i] = (VALUE)key;
arg->vals[i] = (VALUE)val;
return ST_CONTINUE;
}
static int
setup_parameters_complex(rb_thread_t * const th, const rb_iseq_t * const iseq,
struct rb_calling_info *const calling,
const struct rb_call_info *ci,
VALUE * const locals, const enum arg_setup_type arg_setup_type)
{
const int min_argc = iseq->body->param.lead_num + iseq->body->param.post_num;
const int max_argc = (iseq->body->param.flags.has_rest == FALSE) ? min_argc + iseq->body->param.opt_num : UNLIMITED_ARGUMENTS;
int opt_pc = 0;
int given_argc;
struct args_info args_body, *args;
VALUE keyword_hash = Qnil;
VALUE * const orig_sp = th->cfp->sp;
unsigned int i;
/*
* Extend SP for GC.
*
* [pushed values] [uninitialized values]
* <- ci->argc -->
* <- iseq->body->param.size------------>
* ^ locals ^ sp
*
* =>
* [pushed values] [initialized values ]
* <- ci->argc -->
* <- iseq->body->param.size------------>
* ^ locals ^ sp
*/
for (i=calling->argc; i<iseq->body->param.size; i++) {
locals[i] = Qnil;
}
th->cfp->sp = &locals[i];
/* setup args */
args = &args_body;
given_argc = args->argc = calling->argc;
args->argv = locals;
if (ci->flag & VM_CALL_KWARG) {
args->kw_arg = ((struct rb_call_info_with_kwarg *)ci)->kw_arg;
if (iseq->body->param.flags.has_kw) {
int kw_len = args->kw_arg->keyword_len;
/* copy kw_argv */
args->kw_argv = ALLOCA_N(VALUE, kw_len);
args->argc -= kw_len;
given_argc -= kw_len;
MEMCPY(args->kw_argv, locals + args->argc, VALUE, kw_len);
}
else {
args->kw_argv = NULL;
given_argc = args_kw_argv_to_hash(args);
}
}
else {
args->kw_arg = NULL;
args->kw_argv = NULL;
}
if (ci->flag & VM_CALL_ARGS_SPLAT) {
args->rest = locals[--args->argc];
args->rest_index = 0;
given_argc += RARRAY_LENINT(args->rest) - 1;
}
else {
args->rest = Qfalse;
}
switch (arg_setup_type) {
case arg_setup_method:
break; /* do nothing special */
case arg_setup_block:
if (given_argc == 1 &&
(min_argc > 0 || iseq->body->param.opt_num > 1 ||
iseq->body->param.flags.has_kw || iseq->body->param.flags.has_kwrest) &&
!iseq->body->param.flags.ambiguous_param0 &&
args_check_block_arg0(args, th)) {
given_argc = RARRAY_LENINT(args->rest);
}
break;
case arg_setup_lambda:
if (given_argc == 1 &&
given_argc != iseq->body->param.lead_num &&
!iseq->body->param.flags.has_rest &&
args_check_block_arg0(args, th)) {
given_argc = RARRAY_LENINT(args->rest);
}
}
/* argc check */
if (given_argc < min_argc) {
if (given_argc == min_argc - 1 && args->kw_argv) {
args_stored_kw_argv_to_hash(args);
given_argc = args_argc(args);
}
else {
if (arg_setup_type == arg_setup_block) {
CHECK_VM_STACK_OVERFLOW(th->cfp, min_argc);
given_argc = min_argc;
args_extend(args, min_argc);
}
else {
argument_arity_error(th, iseq, given_argc, min_argc, max_argc);
}
}
}
if (given_argc > min_argc &&
(iseq->body->param.flags.has_kw || iseq->body->param.flags.has_kwrest) &&
args->kw_argv == NULL) {
if (args_pop_keyword_hash(args, &keyword_hash, th)) {
given_argc--;
}
}
if (given_argc > max_argc && max_argc != UNLIMITED_ARGUMENTS) {
if (arg_setup_type == arg_setup_block) {
/* truncate */
args_reduce(args, given_argc - max_argc);
given_argc = max_argc;
}
else {
argument_arity_error(th, iseq, given_argc, min_argc, max_argc);
}
}
if (iseq->body->param.flags.has_lead) {
args_setup_lead_parameters(args, iseq->body->param.lead_num, locals + 0);
}
if (iseq->body->param.flags.has_post) {
args_setup_post_parameters(args, iseq->body->param.post_num, locals + iseq->body->param.post_start);
}
if (iseq->body->param.flags.has_opt) {
int opt = args_setup_opt_parameters(args, iseq->body->param.opt_num, locals + iseq->body->param.lead_num);
opt_pc = (int)iseq->body->param.opt_table[opt];
}
if (iseq->body->param.flags.has_rest) {
args_setup_rest_parameter(args, locals + iseq->body->param.rest_start);
}
if (iseq->body->param.flags.has_kw) {
VALUE * const klocals = locals + iseq->body->param.keyword->bits_start - iseq->body->param.keyword->num;
if (args->kw_argv != NULL) {
const struct rb_call_info_kw_arg *kw_arg = args->kw_arg;
args_setup_kw_parameters(args->kw_argv, kw_arg->keyword_len, kw_arg->keywords, iseq, klocals);
}
else if (!NIL_P(keyword_hash)) {
int kw_len = rb_long2int(RHASH_SIZE(keyword_hash));
struct fill_values_arg arg;
/* copy kw_argv */
arg.keys = args->kw_argv = ALLOCA_N(VALUE, kw_len * 2);
arg.vals = arg.keys + kw_len;
arg.argc = 0;
rb_hash_foreach(keyword_hash, fill_keys_values, (VALUE)&arg);
VM_ASSERT(arg.argc == kw_len);
args_setup_kw_parameters(arg.vals, kw_len, arg.keys, iseq, klocals);
}
else {
VM_ASSERT(args_argc(args) == 0);
args_setup_kw_parameters(NULL, 0, NULL, iseq, klocals);
}
}
else if (iseq->body->param.flags.has_kwrest) {
args_setup_kw_rest_parameter(keyword_hash, locals + iseq->body->param.keyword->rest_start);
}
if (iseq->body->param.flags.has_block) {
args_setup_block_parameter(th, calling, locals + iseq->body->param.block_start);
}
#if 0
{
int i;
for (i=0; i<iseq->body->param.size; i++) {
fprintf(stderr, "local[%d] = %p\n", i, (void *)locals[i]);
}
}
#endif
th->cfp->sp = orig_sp;
return opt_pc;
}
static void
raise_argument_error(rb_thread_t *th, const rb_iseq_t *iseq, const VALUE exc)
{
VALUE at;
if (iseq) {
vm_push_frame(th, iseq, VM_FRAME_MAGIC_DUMMY, Qnil /* self */,
VM_ENVVAL_BLOCK_PTR(0) /* specval*/, Qfalse /* me or cref */,
iseq->body->iseq_encoded, th->cfp->sp, 1 /* local_size (cref/me) */, 0 /* stack_max */);
at = rb_vm_backtrace_object();
vm_pop_frame(th);
}
else {
at = rb_vm_backtrace_object();
}
rb_ivar_set(exc, idBt_locations, at);
rb_exc_set_backtrace(exc, at);
rb_exc_raise(exc);
}
static void
argument_arity_error(rb_thread_t *th, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc)
{
raise_argument_error(th, iseq, rb_arity_error_new(miss_argc, min_argc, max_argc));
}
static void
argument_kw_error(rb_thread_t *th, const rb_iseq_t *iseq, const char *error, const VALUE keys)
{
raise_argument_error(th, iseq, rb_keyword_error_new(error, keys));
}
static inline void
vm_caller_setup_arg_splat(rb_control_frame_t *cfp, struct rb_calling_info *calling)
{
int argc = calling->argc;
VALUE *argv = cfp->sp - argc;
VALUE ary = argv[argc-1];
cfp->sp--;
if (!NIL_P(ary)) {
const VALUE *ptr = RARRAY_CONST_PTR(ary);
long len = RARRAY_LEN(ary), i;
CHECK_VM_STACK_OVERFLOW(cfp, len);
for (i = 0; i < len; i++) {
*cfp->sp++ = ptr[i];
}
calling->argc += i - 1;
}
}
static inline void
vm_caller_setup_arg_kw(rb_control_frame_t *cfp, struct rb_calling_info *calling, const struct rb_call_info *ci)
{
struct rb_call_info_with_kwarg *ci_kw = (struct rb_call_info_with_kwarg *)ci;
const VALUE *const passed_keywords = ci_kw->kw_arg->keywords;
const int kw_len = ci_kw->kw_arg->keyword_len;
const VALUE h = rb_hash_new();
VALUE *sp = cfp->sp;
int i;
for (i=0; i<kw_len; i++) {
rb_hash_aset(h, passed_keywords[i], (sp - kw_len)[i]);
}
(sp-kw_len)[0] = h;
cfp->sp -= kw_len - 1;
calling->argc -= kw_len - 1;
}
static void
vm_caller_setup_arg_block(const rb_thread_t *th, rb_control_frame_t *reg_cfp,
struct rb_calling_info *calling, const struct rb_call_info *ci, rb_iseq_t *blockiseq, const int is_super)
{
if (ci->flag & VM_CALL_ARGS_BLOCKARG) {
rb_proc_t *po;
VALUE proc;
proc = *(--reg_cfp->sp);
if (NIL_P(proc)) {
calling->blockptr = NULL;
}
else if (SYMBOL_P(proc) && rb_method_basic_definition_p(rb_cSymbol, idTo_proc)) {
calling->blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(reg_cfp);
calling->blockptr->iseq = (rb_iseq_t *)proc;
calling->blockptr->proc = proc;
}
else {
if (!rb_obj_is_proc(proc)) {
VALUE b;
b = rb_check_convert_type(proc, T_DATA, "Proc", "to_proc");
if (NIL_P(b) || !rb_obj_is_proc(b)) {
rb_raise(rb_eTypeError,
"wrong argument type %s (expected Proc)",
rb_obj_classname(proc));
}
proc = b;
}
GetProcPtr(proc, po);
calling->blockptr = &po->block;
RUBY_VM_GET_BLOCK_PTR_IN_CFP(reg_cfp)->proc = proc;
}
}
else if (blockiseq != 0) { /* likely */
rb_block_t *blockptr = calling->blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(reg_cfp);
blockptr->iseq = blockiseq;
blockptr->proc = 0;
}
else {
if (is_super) {
calling->blockptr = GET_BLOCK_PTR();
}
else {
calling->blockptr = NULL;
}
}
}
#define IS_ARGS_SPLAT(ci) ((ci)->flag & VM_CALL_ARGS_SPLAT)
#define IS_ARGS_KEYWORD(ci) ((ci)->flag & VM_CALL_KWARG)
#define CALLER_SETUP_ARG(cfp, calling, ci) do { \
if (UNLIKELY(IS_ARGS_SPLAT(ci))) vm_caller_setup_arg_splat((cfp), (calling)); \
if (UNLIKELY(IS_ARGS_KEYWORD(ci))) vm_caller_setup_arg_kw((cfp), (calling), (ci)); \
} while (0)
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