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ruby--ruby/vm_args.c
Jeremy Evans 61d90da25c Fix invalid keyword argument separation warning for delegating calls 
This removes an invalid keyword argument separation warning for
code such as:

```ruby
def foo(arg)
  arg
end
kw = {}
foo(*[1], **kw)
```

This warning was caused because the remove_empty_keyword_hash
was set based on a comparison with two variables, and in this
case, one of the variables was updated after the check and we
need to use the updated variable.

Simplify things by just inlining the comparison.
2019-09-08 22:47:06 -07:00

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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(VALUE obj, ID id, int argc, const VALUE *argv,
enum method_missing_reason call_status);
struct args_info {
/* basic args info */
VALUE *argv;
int argc;
/* additional args info */
int rest_index;
int rest_dupped;
const struct rb_call_info_kw_arg *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;
}
#define KW_HASH_HAS_NO_KEYS 0
#define KW_HASH_HAS_SYMBOL_KEY 1
#define KW_HASH_HAS_OTHER_KEY 2
#define KW_HASH_HAS_BOTH_KEYS 3
static int
keyword_hash_symbol_other_iter(st_data_t key, st_data_t val, st_data_t arg)
{
*(int*)arg |= SYMBOL_P((VALUE)key) ? KW_HASH_HAS_SYMBOL_KEY : KW_HASH_HAS_OTHER_KEY;
if ((*(int*)arg & KW_HASH_HAS_BOTH_KEYS) == KW_HASH_HAS_BOTH_KEYS) {
return ST_STOP;
}
return ST_CONTINUE;
}
static int
keyword_hash_symbol_other(VALUE hash)
{
int symbol_other = KW_HASH_HAS_NO_KEYS;
rb_hash_stlike_foreach(hash, keyword_hash_symbol_other_iter, (st_data_t)(&symbol_other));
return symbol_other;
}
static int
keyword_hash_split_iter(st_data_t key, st_data_t val, st_data_t arg)
{
if (SYMBOL_P((VALUE)key)) {
rb_hash_aset((VALUE)arg, (VALUE)key, (VALUE)val);
return ST_DELETE;
}
return ST_CONTINUE;
}
static void
keyword_hash_split(VALUE *kw_hash_ptr, VALUE *rest_hash_ptr)
{
*kw_hash_ptr = rb_hash_new();
rb_hash_stlike_foreach(*rest_hash_ptr, keyword_hash_split_iter, (st_data_t)(*kw_hash_ptr));
}
static int
keyword_hash_p(VALUE *kw_hash_ptr, VALUE *rest_hash_ptr, int check_only_symbol)
{
*rest_hash_ptr = rb_check_hash_type(*kw_hash_ptr);
if (!NIL_P(*rest_hash_ptr)) {
if (check_only_symbol) {
switch(keyword_hash_symbol_other(*rest_hash_ptr)) {
case KW_HASH_HAS_NO_KEYS:
case KW_HASH_HAS_SYMBOL_KEY:
break;
case KW_HASH_HAS_OTHER_KEY:
*kw_hash_ptr = Qnil;
return FALSE;
case KW_HASH_HAS_BOTH_KEYS:
*rest_hash_ptr = rb_hash_dup(*rest_hash_ptr);
keyword_hash_split(kw_hash_ptr, rest_hash_ptr);
return TRUE;
}
}
*kw_hash_ptr = *rest_hash_ptr;
*rest_hash_ptr = Qfalse;
return TRUE;
}
else {
*kw_hash_ptr = Qnil;
return FALSE;
}
}
static VALUE
args_pop_keyword_hash(struct args_info *args, VALUE *kw_hash_ptr, int check_only_symbol)
{
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, check_only_symbol)) {
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, check_only_symbol)) {
if (rest_hash) {
RARRAY_ASET(args->rest, len - 1, rest_hash);
}
else {
arg_rest_dup(args);
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_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 void
args_stored_kw_argv_to_hash(struct args_info *args)
{
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;
VALUE h = rb_hash_new_with_size(passed_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) {
arg_rest_dup(args);
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;
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_tmp_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->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(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->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)
{
locals[0] = NIL_P(keyword_hash) ? rb_hash_new() : rb_hash_dup(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) {
if (!(iseq->body->param.flags.has_kw) &&
!(iseq->body->param.flags.has_kwrest)) {
keyword_hash = rb_check_hash_type(keyword_hash);
if (!NIL_P(keyword_hash) && RHASH_EMPTY_P(keyword_hash)) {
return 1;
}
}
return 0;
}
VALUE rb_iseq_location(const rb_iseq_t *iseq);
static inline void
rb_warn_keyword_to_last_hash(struct rb_calling_info *calling, const struct rb_call_info *ci, const rb_iseq_t * const iseq)
{
VALUE name, loc;
if (calling->recv == Qundef) {
rb_warn("The keyword argument is passed as the last hash parameter");
return;
}
name = rb_id2str(ci->mid);
loc = rb_iseq_location(iseq);
if (NIL_P(loc)) {
rb_warn("The keyword argument for `%"PRIsVALUE"' is passed as the last hash parameter",
name);
}
else {
rb_warn("The keyword argument is passed as the last hash parameter");
rb_compile_warn(RSTRING_PTR(RARRAY_AREF(loc, 0)), FIX2INT(RARRAY_AREF(loc, 1)),
"for `%"PRIsVALUE"' defined here", name);
}
}
static inline void
rb_warn_split_last_hash_to_keyword(struct rb_calling_info *calling, const struct rb_call_info *ci, const rb_iseq_t * const iseq)
{
VALUE name, loc;
if (calling->recv == Qundef) return;
name = rb_id2str(ci->mid);
loc = rb_iseq_location(iseq);
if (NIL_P(loc)) {
rb_warn("The last argument for `%"PRIsVALUE"' is split into positional and keyword parameters",
name);
}
else {
rb_warn("The last argument is split into positional and keyword parameters");
rb_compile_warn(RSTRING_PTR(RARRAY_AREF(loc, 0)), FIX2INT(RARRAY_AREF(loc, 1)),
"for `%"PRIsVALUE"' defined here", name);
}
}
static inline void
rb_warn_last_hash_to_keyword(struct rb_calling_info *calling, const struct rb_call_info *ci, const rb_iseq_t * const iseq)
{
VALUE name, loc;
if (calling->recv == Qundef) return;
name = rb_id2str(ci->mid);
loc = rb_iseq_location(iseq);
if (NIL_P(loc)) {
rb_warn("The last argument for `%"PRIsVALUE"' is used as the keyword parameter",
name);
}
else {
rb_warn("The last argument is used as the keyword parameter");
rb_compile_warn(RSTRING_PTR(RARRAY_AREF(loc, 0)), FIX2INT(RARRAY_AREF(loc, 1)),
"for `%"PRIsVALUE"' defined here", name);
}
}
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_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;
int kw_splat = FALSE;
unsigned int kw_flag = ci->flag & (VM_CALL_KWARG | VM_CALL_KW_SPLAT);
struct args_info args_body, *args;
VALUE keyword_hash = Qnil;
VALUE * const orig_sp = ec->cfp->sp;
unsigned int i;
vm_check_canary(ec, orig_sp);
/*
* 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;
}
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 = ((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);
kw_flag |= VM_CALL_KW_SPLAT;
}
}
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;
if (kw_flag & VM_CALL_KW_SPLAT) {
int len = RARRAY_LENINT(args->rest);
if (len > 0 && ignore_keyword_hash_p(RARRAY_AREF(args->rest, len - 1), iseq)) {
if (given_argc != min_argc) {
arg_rest_dup(args);
rb_ary_pop(args->rest);
given_argc--;
kw_flag &= ~VM_CALL_KW_SPLAT;
}
else {
rb_warn_keyword_to_last_hash(calling, ci, iseq);
}
}
}
}
else {
if (kw_flag & VM_CALL_KW_SPLAT) {
if (ignore_keyword_hash_p(args->argv[args->argc-1], iseq)) {
if (given_argc != min_argc) {
args->argc--;
given_argc--;
kw_flag &= ~VM_CALL_KW_SPLAT;
}
else {
rb_warn_keyword_to_last_hash(calling, ci, iseq);
}
}
}
args->rest = Qfalse;
}
if (kw_flag && iseq->body->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 == 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)) {
given_argc = RARRAY_LENINT(args->rest);
}
break;
}
/* 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(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 (kw_flag & VM_CALL_KW_SPLAT) {
kw_splat = !iseq->body->param.flags.has_rest;
}
if ((iseq->body->param.flags.has_kw || iseq->body->param.flags.has_kwrest ||
(kw_splat && given_argc > max_argc)) &&
args->kw_argv == NULL) {
if (given_argc > min_argc) {
if (kw_flag) {
int check_only_symbol = (kw_flag & VM_CALL_KW_SPLAT) &&
iseq->body->param.flags.has_kw &&
!iseq->body->param.flags.has_kwrest;
if (args_pop_keyword_hash(args, &keyword_hash, check_only_symbol)) {
given_argc--;
}
else if (check_only_symbol) {
if (keyword_hash != Qnil) {
rb_warn_split_last_hash_to_keyword(calling, ci, iseq);
}
else {
rb_warn_keyword_to_last_hash(calling, ci, iseq);
}
}
}
else if (args_pop_keyword_hash(args, &keyword_hash, 1)) {
/* Warn the following:
* def foo(k:1) p [k]; end
* foo({k:42}) #=> 42
*/
rb_warn_last_hash_to_keyword(calling, ci, iseq);
given_argc--;
}
else if (keyword_hash != Qnil) {
rb_warn_split_last_hash_to_keyword(calling, ci, iseq);
}
}
else if (given_argc == min_argc && kw_flag) {
rb_warn_keyword_to_last_hash(calling, ci, iseq);
}
}
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->param.flags.has_lead) {
args_setup_lead_parameters(args, iseq->body->param.lead_num, locals + 0);
}
if (iseq->body->param.flags.has_rest || iseq->body->param.flags.has_post){
args_copy(args);
}
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(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->param.flags.has_kwrest) {
args_setup_kw_rest_parameter(keyword_hash, locals + iseq->body->param.keyword->rest_start);
}
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->param.flags.has_block) {
if (iseq->body->local_iseq == iseq) {
/* Do nothing */
}
else {
args_setup_block_parameter(ec, 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
ec->cfp->sp = orig_sp;
return opt_pc;
}
void rb_backtrace_use_iseq_first_lineno_for_last_location(VALUE self); /* vm_backtrace.c */
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_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->param.flags.has_kw) {
const struct rb_iseq_param_keyword *const kw = iseq->body->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_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_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, VM_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;
rb_execution_context_t *ec;
const VALUE symbol = RARRAY_AREF(callback_arg, 0);
const VALUE refinements = RARRAY_AREF(callback_arg, 1);
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(obj, mid, argc, argv, MISSING_NOENTRY);
}
return rb_vm_call0(ec, obj, mid, argc, argv, me, VM_NO_KEYWORDS);
}
static VALUE
vm_caller_setup_arg_block(const rb_execution_context_t *ec, rb_control_frame_t *reg_cfp,
const struct rb_call_info *ci, const rb_iseq_t *blockiseq, const int is_super)
{
if (ci->flag & 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) {
return VM_CF_BLOCK_HANDLER(reg_cfp);
}
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_tmp_new(2);
rb_ary_push(callback_arg, block_code);
rb_ary_push(callback_arg, ref);
OBJ_FREEZE_RAW(callback_arg);
func = rb_func_proc_new(refine_sym_proc_call, callback_arg);
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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