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ruby--ruby/vm_args.c

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/**********************************************************************
vm_args.c - process method call arguments.
$Author$
Copyright (C) 2014- Yukihiro Matsumoto
**********************************************************************/
NORETURN(static void raise_argument_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const VALUE exc));
NORETURN(static void argument_arity_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc));
NORETURN(static void argument_kw_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const char *error, const VALUE keys));
VALUE rb_keyword_error_new(const char *error, VALUE keys); /* class.c */
static VALUE method_missing(rb_execution_context_t *ec, VALUE obj, ID id, int argc, const VALUE *argv,
enum method_missing_reason call_status, int kw_splat);
#if !defined(_MSC_VER) || !defined(MJIT_HEADER)
MJIT_FUNC_EXPORTED
#endif
const rb_callable_method_entry_t *rb_resolve_refined_method_callable(VALUE refinements, const rb_callable_method_entry_t *me);
struct args_info {
/* basic args info */
VALUE *argv;
int argc;
/* additional args info */
int rest_index;
int rest_dupped;
const struct rb_callinfo_kwarg *kw_arg;
VALUE *kw_argv;
VALUE rest;
};
enum arg_setup_type {
arg_setup_method,
arg_setup_block
};
static inline void
arg_rest_dup(struct args_info *args)
{
if (!args->rest_dupped) {
args->rest = rb_ary_dup(args->rest);
args->rest_dupped = TRUE;
}
}
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) {
arg_rest_dup(args);
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) {
arg_rest_dup(args);
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)
{
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;
arg_rest_dup(args);
/*
* 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->rest_dupped = TRUE;
args->argc = 0;
}
}
static inline const VALUE *
args_rest_argv(struct args_info *args)
{
return RARRAY_CONST_PTR_TRANSIENT(args->rest) + args->rest_index;
}
static inline VALUE
args_rest_array(struct args_info *args)
{
VALUE ary;
if (args->rest) {
ary = rb_ary_behead(args->rest, args->rest_index);
args->rest_index = 0;
args->rest = 0;
}
else {
ary = rb_ary_new();
}
return ary;
}
static int
args_kw_argv_to_hash(struct args_info *args)
{
const struct rb_callinfo_kwarg *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_with_size(kw_len);
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 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;
len = RARRAY_LEN(args->rest);
MEMCPY(locals, RARRAY_CONST_PTR_TRANSIENT(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_TRANSIENT(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)
{
*locals = args_rest_array(args);
}
static VALUE
make_unknown_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv)
{
int i;
VALUE obj = rb_ary_hidden_new(1);
for (i=0; i<passed_keyword_len; i++) {
if (kw_argv[i] != Qundef) {
rb_ary_push(obj, passed_keywords[i]);
}
}
return obj;
}
static VALUE
make_rest_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv)
{
int i;
VALUE obj = rb_hash_new_with_size(passed_keyword_len);
for (i=0; i<passed_keyword_len; i++) {
if (kw_argv[i] != Qundef) {
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;
}
#define KW_SPECIFIED_BITS_MAX (32-1) /* TODO: 32 -> Fixnum's max bits */
static void
args_setup_kw_parameters(rb_execution_context_t *const ec, const rb_iseq_t *const iseq,
VALUE *const passed_values, const int passed_keyword_len, const VALUE *const passed_keywords,
VALUE *const locals)
{
const ID *acceptable_keywords = ISEQ_BODY(iseq)->param.keyword->table;
const int req_key_num = ISEQ_BODY(iseq)->param.keyword->required_num;
const int key_num = ISEQ_BODY(iseq)->param.keyword->num;
const VALUE * const default_values = ISEQ_BODY(iseq)->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_hidden_new(1);
rb_ary_push(missing, ID2SYM(key));
}
}
if (missing) argument_kw_error(ec, 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 < KW_SPECIFIED_BITS_MAX)) {
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<KW_SPECIFIED_BITS_MAX; 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(iseq)->param.flags.has_kwrest) {
const int rest_hash_index = key_num + 1;
locals[rest_hash_index] = make_rest_kw_hash(passed_keywords, passed_keyword_len, passed_values);
}
else {
if (found != passed_keyword_len) {
VALUE keys = make_unknown_kw_hash(passed_keywords, passed_keyword_len, passed_values);
argument_kw_error(ec, 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, int kw_flag)
{
if (NIL_P(keyword_hash)) {
keyword_hash = rb_hash_new();
}
else if (!(kw_flag & VM_CALL_KW_SPLAT_MUT)) {
keyword_hash = rb_hash_dup(keyword_hash);
}
locals[0] = keyword_hash;
}
static inline void
args_setup_block_parameter(const rb_execution_context_t *ec, struct rb_calling_info *calling, VALUE *locals)
{
VALUE block_handler = calling->block_handler;
*locals = rb_vm_bh_to_procval(ec, block_handler);
}
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 inline int
ignore_keyword_hash_p(VALUE keyword_hash, const rb_iseq_t * const iseq, unsigned int * kw_flag, VALUE * converted_keyword_hash)
{
if (!RB_TYPE_P(keyword_hash, T_HASH)) {
keyword_hash = rb_to_hash_type(keyword_hash);
}
if (!(*kw_flag & VM_CALL_KW_SPLAT_MUT) &&
(ISEQ_BODY(iseq)->param.flags.has_kwrest ||
ISEQ_BODY(iseq)->param.flags.ruby2_keywords)) {
*kw_flag |= VM_CALL_KW_SPLAT_MUT;
keyword_hash = rb_hash_dup(keyword_hash);
}
*converted_keyword_hash = keyword_hash;
return !(ISEQ_BODY(iseq)->param.flags.has_kw) &&
!(ISEQ_BODY(iseq)->param.flags.has_kwrest) &&
RHASH_EMPTY_P(keyword_hash);
}
static int
setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * const iseq,
struct rb_calling_info *const calling,
const struct rb_callinfo *ci,
VALUE * const locals, const enum arg_setup_type arg_setup_type)
{
const int min_argc = ISEQ_BODY(iseq)->param.lead_num + ISEQ_BODY(iseq)->param.post_num;
const int max_argc = (ISEQ_BODY(iseq)->param.flags.has_rest == FALSE) ? min_argc + ISEQ_BODY(iseq)->param.opt_num : UNLIMITED_ARGUMENTS;
int given_argc;
unsigned int kw_flag = vm_ci_flag(ci) & (VM_CALL_KWARG | VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
int opt_pc = 0, allow_autosplat = !kw_flag;
struct args_info args_body, *args;
VALUE keyword_hash = Qnil;
VALUE * const orig_sp = ec->cfp->sp;
unsigned int i;
VALUE flag_keyword_hash = 0;
VALUE splat_flagged_keyword_hash = 0;
VALUE converted_keyword_hash = 0;
VALUE rest_last = 0;
vm_check_canary(ec, orig_sp);
/*
* Extend SP for GC.
*
* [pushed values] [uninitialized values]
* <- ci->argc -->
* <- ISEQ_BODY(iseq)->param.size------------>
* ^ locals ^ sp
*
* =>
* [pushed values] [initialized values ]
* <- ci->argc -->
* <- ISEQ_BODY(iseq)->param.size------------>
* ^ locals ^ sp
*/
for (i=calling->argc; i<ISEQ_BODY(iseq)->param.size; i++) {
locals[i] = Qnil;
}
ec->cfp->sp = &locals[i];
/* setup args */
args = &args_body;
given_argc = args->argc = calling->argc;
args->argv = locals;
args->rest_dupped = FALSE;
if (kw_flag & VM_CALL_KWARG) {
args->kw_arg = vm_ci_kwarg(ci);
if (ISEQ_BODY(iseq)->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);
kw_flag |= VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT;
}
}
else {
args->kw_arg = NULL;
args->kw_argv = NULL;
}
if (vm_ci_flag(ci) & VM_CALL_ARGS_SPLAT) {
int len;
args->rest = locals[--args->argc];
args->rest_index = 0;
len = RARRAY_LENINT(args->rest);
given_argc += len - 1;
rest_last = RARRAY_AREF(args->rest, len - 1);
if (!kw_flag && len > 0) {
if (RB_TYPE_P(rest_last, T_HASH) &&
(((struct RHash *)rest_last)->basic.flags & RHASH_PASS_AS_KEYWORDS)) {
splat_flagged_keyword_hash = rest_last;
rest_last = rb_hash_dup(rest_last);
kw_flag |= VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT;
}
else {
rest_last = 0;
}
}
if (kw_flag & VM_CALL_KW_SPLAT) {
if (ignore_keyword_hash_p(rest_last, iseq, &kw_flag, &converted_keyword_hash)) {
arg_rest_dup(args);
rb_ary_pop(args->rest);
given_argc--;
kw_flag &= ~(VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
}
else {
if (rest_last != converted_keyword_hash) {
rest_last = converted_keyword_hash;
arg_rest_dup(args);
RARRAY_ASET(args->rest, len - 1, rest_last);
}
if (ISEQ_BODY(iseq)->param.flags.ruby2_keywords && rest_last) {
flag_keyword_hash = rest_last;
}
else if (ISEQ_BODY(iseq)->param.flags.has_kw || ISEQ_BODY(iseq)->param.flags.has_kwrest) {
arg_rest_dup(args);
rb_ary_pop(args->rest);
given_argc--;
keyword_hash = rest_last;
}
}
}
}
else {
if (kw_flag & VM_CALL_KW_SPLAT) {
VALUE last_arg = args->argv[args->argc-1];
if (ignore_keyword_hash_p(last_arg, iseq, &kw_flag, &converted_keyword_hash)) {
args->argc--;
given_argc--;
kw_flag &= ~(VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
}
else {
if (last_arg != converted_keyword_hash) {
last_arg = converted_keyword_hash;
args->argv[args->argc-1] = last_arg;
}
if (ISEQ_BODY(iseq)->param.flags.ruby2_keywords) {
flag_keyword_hash = last_arg;
}
else if (ISEQ_BODY(iseq)->param.flags.has_kw || ISEQ_BODY(iseq)->param.flags.has_kwrest) {
args->argc--;
given_argc--;
keyword_hash = last_arg;
}
}
}
args->rest = Qfalse;
}
if (flag_keyword_hash && RB_TYPE_P(flag_keyword_hash, T_HASH)) {
((struct RHash *)flag_keyword_hash)->basic.flags |= RHASH_PASS_AS_KEYWORDS;
}
if (kw_flag && ISEQ_BODY(iseq)->param.flags.accepts_no_kwarg) {
rb_raise(rb_eArgError, "no keywords accepted");
}
switch (arg_setup_type) {
case arg_setup_method:
break; /* do nothing special */
case arg_setup_block:
if (given_argc == (NIL_P(keyword_hash) ? 1 : 2) &&
allow_autosplat &&
(min_argc > 0 || ISEQ_BODY(iseq)->param.opt_num > 1) &&
!ISEQ_BODY(iseq)->param.flags.ambiguous_param0 &&
!((ISEQ_BODY(iseq)->param.flags.has_kw ||
ISEQ_BODY(iseq)->param.flags.has_kwrest)
&& max_argc == 1) &&
args_check_block_arg0(args)) {
given_argc = RARRAY_LENINT(args->rest);
}
break;
}
/* argc check */
if (given_argc < min_argc) {
if (arg_setup_type == arg_setup_block) {
CHECK_VM_STACK_OVERFLOW(ec->cfp, min_argc);
given_argc = min_argc;
args_extend(args, min_argc);
}
else {
argument_arity_error(ec, iseq, given_argc, min_argc, max_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(ec, iseq, given_argc, min_argc, max_argc);
}
}
if (ISEQ_BODY(iseq)->param.flags.has_lead) {
args_setup_lead_parameters(args, ISEQ_BODY(iseq)->param.lead_num, locals + 0);
}
if (ISEQ_BODY(iseq)->param.flags.has_rest || ISEQ_BODY(iseq)->param.flags.has_post){
args_copy(args);
}
if (ISEQ_BODY(iseq)->param.flags.has_post) {
args_setup_post_parameters(args, ISEQ_BODY(iseq)->param.post_num, locals + ISEQ_BODY(iseq)->param.post_start);
}
if (ISEQ_BODY(iseq)->param.flags.has_opt) {
int opt = args_setup_opt_parameters(args, ISEQ_BODY(iseq)->param.opt_num, locals + ISEQ_BODY(iseq)->param.lead_num);
opt_pc = (int)ISEQ_BODY(iseq)->param.opt_table[opt];
}
if (ISEQ_BODY(iseq)->param.flags.has_rest) {
args_setup_rest_parameter(args, locals + ISEQ_BODY(iseq)->param.rest_start);
VALUE ary = *(locals + ISEQ_BODY(iseq)->param.rest_start);
VALUE index = RARRAY_LEN(ary) - 1;
if (splat_flagged_keyword_hash &&
!ISEQ_BODY(iseq)->param.flags.ruby2_keywords &&
!ISEQ_BODY(iseq)->param.flags.has_kw &&
!ISEQ_BODY(iseq)->param.flags.has_kwrest &&
RARRAY_AREF(ary, index) == splat_flagged_keyword_hash) {
((struct RHash *)rest_last)->basic.flags &= ~RHASH_PASS_AS_KEYWORDS;
RARRAY_ASET(ary, index, rest_last);
}
}
if (ISEQ_BODY(iseq)->param.flags.has_kw) {
VALUE * const klocals = locals + ISEQ_BODY(iseq)->param.keyword->bits_start - ISEQ_BODY(iseq)->param.keyword->num;
if (args->kw_argv != NULL) {
const struct rb_callinfo_kwarg *kw_arg = args->kw_arg;
args_setup_kw_parameters(ec, iseq, args->kw_argv, kw_arg->keyword_len, kw_arg->keywords, 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(ec, iseq, arg.vals, kw_len, arg.keys, klocals);
}
else {
VM_ASSERT(args_argc(args) == 0);
args_setup_kw_parameters(ec, iseq, NULL, 0, NULL, klocals);
}
}
else if (ISEQ_BODY(iseq)->param.flags.has_kwrest) {
args_setup_kw_rest_parameter(keyword_hash, locals + ISEQ_BODY(iseq)->param.keyword->rest_start, kw_flag);
}
else if (!NIL_P(keyword_hash) && RHASH_SIZE(keyword_hash) > 0 && arg_setup_type == arg_setup_method) {
argument_kw_error(ec, iseq, "unknown", rb_hash_keys(keyword_hash));
}
if (ISEQ_BODY(iseq)->param.flags.has_block) {
if (ISEQ_BODY(iseq)->local_iseq == iseq) {
/* Do nothing */
}
else {
args_setup_block_parameter(ec, calling, locals + ISEQ_BODY(iseq)->param.block_start);
}
}
#if 0
{
int i;
for (i=0; i<ISEQ_BODY(iseq)->param.size; i++) {
ruby_debug_printf("local[%d] = %p\n", i, (void *)locals[i]);
}
}
#endif
ec->cfp->sp = orig_sp;
return opt_pc;
}
static void
raise_argument_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const VALUE exc)
{
VALUE at;
if (iseq) {
vm_push_frame(ec, iseq, VM_FRAME_MAGIC_DUMMY | VM_ENV_FLAG_LOCAL, Qnil /* self */,
VM_BLOCK_HANDLER_NONE /* specval*/, Qfalse /* me or cref */,
ISEQ_BODY(iseq)->iseq_encoded,
ec->cfp->sp, 0, 0 /* stack_max */);
at = rb_ec_backtrace_object(ec);
rb_backtrace_use_iseq_first_lineno_for_last_location(at);
rb_vm_pop_frame(ec);
}
else {
at = rb_ec_backtrace_object(ec);
}
rb_ivar_set(exc, idBt_locations, at);
rb_exc_set_backtrace(exc, at);
rb_exc_raise(exc);
}
static void
argument_arity_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc)
{
VALUE exc = rb_arity_error_new(miss_argc, min_argc, max_argc);
if (ISEQ_BODY(iseq)->param.flags.has_kw) {
const struct rb_iseq_param_keyword *const kw = ISEQ_BODY(iseq)->param.keyword;
const ID *keywords = kw->table;
int req_key_num = kw->required_num;
if (req_key_num > 0) {
static const char required[] = "; required keywords";
VALUE mesg = rb_attr_get(exc, idMesg);
rb_str_resize(mesg, RSTRING_LEN(mesg)-1);
rb_str_cat(mesg, required, sizeof(required) - 1 - (req_key_num == 1));
rb_str_cat_cstr(mesg, ":");
do {
rb_str_cat_cstr(mesg, " ");
rb_str_append(mesg, rb_id2str(*keywords++));
rb_str_cat_cstr(mesg, ",");
} while (--req_key_num);
RSTRING_PTR(mesg)[RSTRING_LEN(mesg)-1] = ')';
}
}
raise_argument_error(ec, iseq, exc);
}
static void
argument_kw_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const char *error, const VALUE keys)
{
raise_argument_error(ec, 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];
vm_check_canary(GET_EC(), cfp->sp);
cfp->sp--;
if (!NIL_P(ary)) {
const VALUE *ptr = RARRAY_CONST_PTR_TRANSIENT(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_callinfo *ci)
{
const VALUE *const passed_keywords = vm_ci_kwarg(ci)->keywords;
const int kw_len = vm_ci_kwarg(ci)->keyword_len;
const VALUE h = rb_hash_new_with_size(kw_len);
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;
calling->kw_splat = 1;
}
static VALUE
vm_to_proc(VALUE proc)
{
if (UNLIKELY(!rb_obj_is_proc(proc))) {
VALUE b;
const rb_callable_method_entry_t *me =
rb_callable_method_entry_with_refinements(CLASS_OF(proc), idTo_proc, NULL);
if (me) {
b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me, RB_NO_KEYWORDS);
}
else {
/* NOTE: calling method_missing */
b = rb_check_convert_type_with_id(proc, T_DATA, "Proc", idTo_proc);
}
if (NIL_P(b) || !rb_obj_is_proc(b)) {
rb_raise(rb_eTypeError,
"wrong argument type %s (expected Proc)",
rb_obj_classname(proc));
}
return b;
}
else {
return proc;
}
}
static VALUE
refine_sym_proc_call(RB_BLOCK_CALL_FUNC_ARGLIST(yielded_arg, callback_arg))
{
VALUE obj;
ID mid;
const rb_callable_method_entry_t *me = 0; /* for hidden object case */
rb_execution_context_t *ec;
const VALUE symbol = RARRAY_AREF(callback_arg, 0);
const VALUE refinements = RARRAY_AREF(callback_arg, 1);
int kw_splat = RB_PASS_CALLED_KEYWORDS;
VALUE klass;
if (argc-- < 1) {
rb_raise(rb_eArgError, "no receiver given");
}
obj = *argv++;
mid = SYM2ID(symbol);
for (klass = CLASS_OF(obj); klass; klass = RCLASS_SUPER(klass)) {
me = rb_callable_method_entry(klass, mid);
if (me) {
me = rb_resolve_refined_method_callable(refinements, me);
if (me) break;
}
}
ec = GET_EC();
if (!NIL_P(blockarg)) {
vm_passed_block_handler_set(ec, blockarg);
}
if (!me) {
return method_missing(ec, obj, mid, argc, argv, MISSING_NOENTRY, kw_splat);
}
return rb_vm_call0(ec, obj, mid, argc, argv, me, kw_splat);
}
static VALUE
vm_caller_setup_arg_block(const rb_execution_context_t *ec, rb_control_frame_t *reg_cfp,
const struct rb_callinfo *ci, const rb_iseq_t *blockiseq, const int is_super)
{
if (vm_ci_flag(ci) & VM_CALL_ARGS_BLOCKARG) {
VALUE block_code = *(--reg_cfp->sp);
if (NIL_P(block_code)) {
return VM_BLOCK_HANDLER_NONE;
}
else if (block_code == rb_block_param_proxy) {
VM_ASSERT(!VM_CFP_IN_HEAP_P(GET_EC(), reg_cfp));
VALUE handler = VM_CF_BLOCK_HANDLER(reg_cfp);
reg_cfp->block_code = (const void *) handler;
return handler;
}
else if (SYMBOL_P(block_code) && rb_method_basic_definition_p(rb_cSymbol, idTo_proc)) {
const rb_cref_t *cref = vm_env_cref(reg_cfp->ep);
if (cref && !NIL_P(cref->refinements)) {
VALUE ref = cref->refinements;
VALUE func = rb_hash_lookup(ref, block_code);
if (NIL_P(func)) {
/* TODO: limit cached funcs */
VALUE callback_arg = rb_ary_hidden_new(2);
rb_ary_push(callback_arg, block_code);
rb_ary_push(callback_arg, ref);
OBJ_FREEZE_RAW(callback_arg);
func = rb_func_lambda_new(refine_sym_proc_call, callback_arg, 1, UNLIMITED_ARGUMENTS);
rb_hash_aset(ref, block_code, func);
}
block_code = func;
}
return block_code;
}
else {
return vm_to_proc(block_code);
}
}
else if (blockiseq != NULL) { /* likely */
struct rb_captured_block *captured = VM_CFP_TO_CAPTURED_BLOCK(reg_cfp);
captured->code.iseq = blockiseq;
return VM_BH_FROM_ISEQ_BLOCK(captured);
}
else {
if (is_super) {
return GET_BLOCK_HANDLER();
}
else {
return VM_BLOCK_HANDLER_NONE;
}
}
}
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