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vm_insnhelper.c
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vm_insnhelper.c
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/**********************************************************************
vm_insnhelper.c - instruction helper functions.
$Author$
Copyright (C) 2007 Koichi Sasada
**********************************************************************/
/* finish iseq array */
#include "insns.inc"
#include <math.h>
#include "constant.h"
#include "internal.h"
#include "probes.h"
#include "probes_helper.h"
/* control stack frame */
#ifndef INLINE
#define INLINE inline
#endif
static rb_control_frame_t *vm_get_ruby_level_caller_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
static void
vm_stackoverflow(void)
{
rb_exc_raise(sysstack_error);
}
static inline rb_control_frame_t *
vm_push_frame(rb_thread_t *th,
const rb_iseq_t *iseq,
VALUE type,
VALUE self,
VALUE klass,
VALUE specval,
const VALUE *pc,
VALUE *sp,
int local_size,
const rb_method_entry_t *me,
size_t stack_max)
{
rb_control_frame_t *const cfp = th->cfp - 1;
int i;
/* check stack overflow */
CHECK_VM_STACK_OVERFLOW0(cfp, sp, local_size + (int)stack_max);
th->cfp = cfp;
/* setup vm value stack */
/* initialize local variables */
for (i=0; i < local_size; i++) {
*sp++ = Qnil;
}
/* set special val */
*sp = specval;
/* setup vm control frame stack */
cfp->pc = (VALUE *)pc;
cfp->sp = sp + 1;
#if VM_DEBUG_BP_CHECK
cfp->bp_check = sp + 1;
#endif
cfp->ep = sp;
cfp->iseq = (rb_iseq_t *) iseq;
cfp->flag = type;
cfp->self = self;
cfp->block_iseq = 0;
cfp->proc = 0;
cfp->me = me;
if (klass) {
cfp->klass = klass;
}
else {
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
if (RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, prev_cfp)) {
cfp->klass = Qnil;
}
else {
cfp->klass = prev_cfp->klass;
}
}
if (VMDEBUG == 2) {
SDR();
}
return cfp;
}
static inline void
vm_pop_frame(rb_thread_t *th)
{
th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
if (VMDEBUG == 2) {
SDR();
}
}
/* method dispatch */
static inline VALUE
rb_arg_error_new(int argc, int min, int max)
{
VALUE err_mess = 0;
if (min == max) {
err_mess = rb_sprintf("wrong number of arguments (%d for %d)", argc, min);
}
else if (max == UNLIMITED_ARGUMENTS) {
err_mess = rb_sprintf("wrong number of arguments (%d for %d+)", argc, min);
}
else {
err_mess = rb_sprintf("wrong number of arguments (%d for %d..%d)", argc, min, max);
}
return rb_exc_new3(rb_eArgError, err_mess);
}
NORETURN(static void argument_error(const rb_iseq_t *iseq, int miss_argc, int min_argc, int max_argc));
static void
argument_error(const rb_iseq_t *iseq, int miss_argc, int min_argc, int max_argc)
{
VALUE exc = rb_arg_error_new(miss_argc, min_argc, max_argc);
VALUE bt = rb_make_backtrace();
VALUE err_line = 0;
if (iseq) {
int line_no = rb_iseq_first_lineno(iseq);
err_line = rb_sprintf("%s:%d:in `%s'",
RSTRING_PTR(iseq->location.path),
line_no, RSTRING_PTR(iseq->location.label));
rb_funcall(bt, rb_intern("unshift"), 1, err_line);
}
rb_funcall(exc, rb_intern("set_backtrace"), 1, bt);
rb_exc_raise(exc);
}
NORETURN(static void keyword_error(const char *error, VALUE keys));
static void
keyword_error(const char *error, VALUE keys)
{
const char *msg = RARRAY_LEN(keys) == 1 ? "" : "s";
keys = rb_ary_join(keys, rb_usascii_str_new2(", "));
rb_raise(rb_eArgError, "%s keyword%s: %"PRIsVALUE, error, msg, keys);
}
NORETURN(static void unknown_keyword_error(const rb_iseq_t *iseq, VALUE hash));
static void
unknown_keyword_error(const rb_iseq_t *iseq, VALUE hash)
{
VALUE keys;
int i;
for (i = 0; i < iseq->arg_keywords; i++) {
rb_hash_delete(hash, ID2SYM(iseq->arg_keyword_table[i]));
}
keys = rb_funcall(hash, rb_intern("keys"), 0, 0);
if (!RB_TYPE_P(keys, T_ARRAY)) rb_raise(rb_eArgError, "unknown keyword");
keyword_error("unknown", keys);
}
void
rb_error_arity(int argc, int min, int max)
{
rb_exc_raise(rb_arg_error_new(argc, min, max));
}
/* svar */
static inline NODE *
lep_svar_place(rb_thread_t *th, VALUE *lep)
{
VALUE *svar;
if (lep && th->root_lep != lep) {
svar = &lep[-1];
}
else {
svar = &th->root_svar;
}
if (NIL_P(*svar)) {
*svar = (VALUE)NEW_IF(Qnil, Qnil, Qnil);
}
return (NODE *)*svar;
}
static VALUE
lep_svar_get(rb_thread_t *th, VALUE *lep, rb_num_t key)
{
NODE *svar = lep_svar_place(th, lep);
switch (key) {
case 0:
return svar->u1.value;
case 1:
return svar->u2.value;
default: {
const VALUE ary = svar->u3.value;
if (NIL_P(ary)) {
return Qnil;
}
else {
return rb_ary_entry(ary, key - DEFAULT_SPECIAL_VAR_COUNT);
}
}
}
}
static void
lep_svar_set(rb_thread_t *th, VALUE *lep, rb_num_t key, VALUE val)
{
NODE *svar = lep_svar_place(th, lep);
switch (key) {
case 0:
svar->u1.value = val;
return;
case 1:
svar->u2.value = val;
return;
default: {
VALUE ary = svar->u3.value;
if (NIL_P(ary)) {
svar->u3.value = ary = rb_ary_new();
}
rb_ary_store(ary, key - DEFAULT_SPECIAL_VAR_COUNT, val);
}
}
}
static inline VALUE
vm_getspecial(rb_thread_t *th, VALUE *lep, rb_num_t key, rb_num_t type)
{
VALUE val;
if (type == 0) {
val = lep_svar_get(th, lep, key);
}
else {
VALUE backref = lep_svar_get(th, lep, 1);
if (type & 0x01) {
switch (type >> 1) {
case '&':
val = rb_reg_last_match(backref);
break;
case '`':
val = rb_reg_match_pre(backref);
break;
case '\'':
val = rb_reg_match_post(backref);
break;
case '+':
val = rb_reg_match_last(backref);
break;
default:
rb_bug("unexpected back-ref");
}
}
else {
val = rb_reg_nth_match((int)(type >> 1), backref);
}
}
return val;
}
static NODE *
vm_get_cref0(const rb_iseq_t *iseq, const VALUE *ep)
{
while (1) {
if (VM_EP_LEP_P(ep)) {
if (!RUBY_VM_NORMAL_ISEQ_P(iseq)) return NULL;
return iseq->cref_stack;
}
else if (ep[-1] != Qnil) {
return (NODE *)ep[-1];
}
ep = VM_EP_PREV_EP(ep);
}
}
NODE *
rb_vm_get_cref(const rb_iseq_t *iseq, const VALUE *ep)
{
NODE *cref = vm_get_cref0(iseq, ep);
if (cref == 0) {
rb_bug("rb_vm_get_cref: unreachable");
}
return cref;
}
static NODE *
vm_cref_push(rb_thread_t *th, VALUE klass, int noex, rb_block_t *blockptr)
{
rb_control_frame_t *cfp = vm_get_ruby_level_caller_cfp(th, th->cfp);
NODE *cref = NEW_CREF(klass);
cref->nd_refinements = Qnil;
cref->nd_visi = noex;
if (blockptr) {
cref->nd_next = vm_get_cref0(blockptr->iseq, blockptr->ep);
}
else if (cfp) {
cref->nd_next = vm_get_cref0(cfp->iseq, cfp->ep);
}
/* TODO: why cref->nd_next is 1? */
if (cref->nd_next && cref->nd_next != (void *) 1 &&
!NIL_P(cref->nd_next->nd_refinements)) {
COPY_CREF_OMOD(cref, cref->nd_next);
}
return cref;
}
static inline VALUE
vm_get_cbase(const rb_iseq_t *iseq, const VALUE *ep)
{
NODE *cref = rb_vm_get_cref(iseq, ep);
VALUE klass = Qundef;
while (cref) {
if ((klass = cref->nd_clss) != 0) {
break;
}
cref = cref->nd_next;
}
return klass;
}
static inline VALUE
vm_get_const_base(const rb_iseq_t *iseq, const VALUE *ep)
{
NODE *cref = rb_vm_get_cref(iseq, ep);
VALUE klass = Qundef;
while (cref) {
if (!(cref->flags & NODE_FL_CREF_PUSHED_BY_EVAL) &&
(klass = cref->nd_clss) != 0) {
break;
}
cref = cref->nd_next;
}
return klass;
}
static inline void
vm_check_if_namespace(VALUE klass)
{
VALUE str;
if (!RB_TYPE_P(klass, T_CLASS) && !RB_TYPE_P(klass, T_MODULE)) {
str = rb_inspect(klass);
rb_raise(rb_eTypeError, "%s is not a class/module",
StringValuePtr(str));
}
}
static inline VALUE
vm_get_iclass(rb_control_frame_t *cfp, VALUE klass)
{
if (RB_TYPE_P(klass, T_MODULE) &&
FL_TEST(klass, RMODULE_IS_OVERLAID) &&
RB_TYPE_P(cfp->klass, T_ICLASS) &&
RBASIC(cfp->klass)->klass == klass) {
return cfp->klass;
}
else {
return klass;
}
}
static inline VALUE
vm_get_ev_const(rb_thread_t *th, const rb_iseq_t *iseq,
VALUE orig_klass, ID id, int is_defined)
{
VALUE val;
if (orig_klass == Qnil) {
/* in current lexical scope */
const NODE *root_cref = rb_vm_get_cref(iseq, th->cfp->ep);
const NODE *cref;
VALUE klass = orig_klass;
while (root_cref && root_cref->flags & NODE_FL_CREF_PUSHED_BY_EVAL) {
root_cref = root_cref->nd_next;
}
cref = root_cref;
while (cref && cref->nd_next) {
if (cref->flags & NODE_FL_CREF_PUSHED_BY_EVAL) {
klass = Qnil;
}
else {
klass = cref->nd_clss;
}
cref = cref->nd_next;
if (!NIL_P(klass)) {
VALUE av, am = 0;
st_data_t data;
search_continue:
if (RCLASS_CONST_TBL(klass) &&
st_lookup(RCLASS_CONST_TBL(klass), id, &data)) {
val = ((rb_const_entry_t*)data)->value;
if (val == Qundef) {
if (am == klass) break;
am = klass;
if (is_defined) return 1;
if (rb_autoloading_value(klass, id, &av)) return av;
rb_autoload_load(klass, id);
goto search_continue;
}
else {
if (is_defined) {
return 1;
}
else {
return val;
}
}
}
}
}
/* search self */
if (root_cref && !NIL_P(root_cref->nd_clss)) {
klass = vm_get_iclass(th->cfp, root_cref->nd_clss);
}
else {
klass = CLASS_OF(th->cfp->self);
}
if (is_defined) {
return rb_const_defined(klass, id);
}
else {
return rb_const_get(klass, id);
}
}
else {
vm_check_if_namespace(orig_klass);
if (is_defined) {
return rb_public_const_defined_from(orig_klass, id);
}
else {
return rb_public_const_get_from(orig_klass, id);
}
}
}
static inline VALUE
vm_get_cvar_base(NODE *cref, rb_control_frame_t *cfp)
{
VALUE klass;
if (!cref) {
rb_bug("vm_get_cvar_base: no cref");
}
while (cref->nd_next &&
(NIL_P(cref->nd_clss) || FL_TEST(cref->nd_clss, FL_SINGLETON) ||
(cref->flags & NODE_FL_CREF_PUSHED_BY_EVAL))) {
cref = cref->nd_next;
}
if (!cref->nd_next) {
rb_warn("class variable access from toplevel");
}
klass = vm_get_iclass(cfp, cref->nd_clss);
if (NIL_P(klass)) {
rb_raise(rb_eTypeError, "no class variables available");
}
return klass;
}
static VALUE
vm_search_const_defined_class(const VALUE cbase, ID id)
{
if (rb_const_defined_at(cbase, id)) return cbase;
if (cbase == rb_cObject) {
VALUE tmp = RCLASS_SUPER(cbase);
while (tmp) {
if (rb_const_defined_at(tmp, id)) return tmp;
tmp = RCLASS_SUPER(tmp);
}
}
return 0;
}
#ifndef USE_IC_FOR_IVAR
#define USE_IC_FOR_IVAR 1
#endif
static inline VALUE
vm_getivar(VALUE obj, ID id, IC ic, rb_call_info_t *ci, int is_attr)
{
#if USE_IC_FOR_IVAR
if (RB_TYPE_P(obj, T_OBJECT)) {
VALUE val = Qundef;
VALUE klass = RBASIC(obj)->klass;
if (LIKELY((!is_attr && ic->ic_seq == RCLASS_EXT(klass)->seq) ||
(is_attr && ci->aux.index > 0))) {
long index = !is_attr ? (long)ic->ic_value.index : ci->aux.index - 1;
long len = ROBJECT_NUMIV(obj);
VALUE *ptr = ROBJECT_IVPTR(obj);
if (index < len) {
val = ptr[index];
}
}
else {
st_data_t index;
long len = ROBJECT_NUMIV(obj);
VALUE *ptr = ROBJECT_IVPTR(obj);
struct st_table *iv_index_tbl = ROBJECT_IV_INDEX_TBL(obj);
if (iv_index_tbl) {
if (st_lookup(iv_index_tbl, id, &index)) {
if ((long)index < len) {
val = ptr[index];
}
if (!is_attr) {
ic->ic_value.index = index;
ic->ic_seq = RCLASS_EXT(klass)->seq;
}
else { /* call_info */
ci->aux.index = index + 1;
}
}
}
}
if (UNLIKELY(val == Qundef)) {
if (!is_attr) rb_warning("instance variable %s not initialized", rb_id2name(id));
val = Qnil;
}
return val;
}
#endif /* USE_IC_FOR_IVAR */
if (is_attr)
return rb_attr_get(obj, id);
return rb_ivar_get(obj, id);
}
static inline VALUE
vm_setivar(VALUE obj, ID id, VALUE val, IC ic, rb_call_info_t *ci, int is_attr)
{
#if USE_IC_FOR_IVAR
rb_check_frozen(obj);
if (RB_TYPE_P(obj, T_OBJECT)) {
VALUE klass = RBASIC(obj)->klass;
st_data_t index;
if (LIKELY(
(!is_attr && ic->ic_seq == RCLASS_EXT(klass)->seq) ||
(is_attr && ci->aux.index > 0))) {
long index = !is_attr ? (long)ic->ic_value.index : ci->aux.index-1;
long len = ROBJECT_NUMIV(obj);
VALUE *ptr = ROBJECT_IVPTR(obj);
if (index < len) {
OBJ_WRITE(obj, &ptr[index], val);
return val; /* inline cache hit */
}
}
else {
struct st_table *iv_index_tbl = ROBJECT_IV_INDEX_TBL(obj);
if (iv_index_tbl && st_lookup(iv_index_tbl, (st_data_t)id, &index)) {
if (!is_attr) {
ic->ic_value.index = index;
ic->ic_seq = RCLASS_EXT(klass)->seq;
}
else {
ci->aux.index = index + 1;
}
}
/* fall through */
}
}
#endif /* USE_IC_FOR_IVAR */
return rb_ivar_set(obj, id, val);
}
static VALUE
vm_getinstancevariable(VALUE obj, ID id, IC ic)
{
return vm_getivar(obj, id, ic, 0, 0);
}
static void
vm_setinstancevariable(VALUE obj, ID id, VALUE val, IC ic)
{
vm_setivar(obj, id, val, ic, 0, 0);
}
static VALUE
vm_throw(rb_thread_t *th, rb_control_frame_t *reg_cfp,
rb_num_t throw_state, VALUE throwobj)
{
int state = (int)(throw_state & 0xff);
int flag = (int)(throw_state & 0x8000);
rb_num_t level = throw_state >> 16;
if (state != 0) {
VALUE *pt = 0;
if (flag != 0) {
pt = (void *) 1;
}
else {
if (state == TAG_BREAK) {
rb_control_frame_t *cfp = GET_CFP();
VALUE *ep = GET_EP();
int is_orphan = 1;
rb_iseq_t *base_iseq = GET_ISEQ();
search_parent:
if (cfp->iseq->type != ISEQ_TYPE_BLOCK) {
if (cfp->iseq->type == ISEQ_TYPE_CLASS) {
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
ep = cfp->ep;
goto search_parent;
}
ep = VM_EP_PREV_EP(ep);
base_iseq = base_iseq->parent_iseq;
while ((VALUE *) cfp < th->stack + th->stack_size) {
if (cfp->ep == ep) {
goto search_parent;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
rb_bug("VM (throw): can't find break base.");
}
if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_LAMBDA) {
/* lambda{... break ...} */
is_orphan = 0;
pt = cfp->ep;
state = TAG_RETURN;
}
else {
ep = VM_EP_PREV_EP(ep);
while ((VALUE *)cfp < th->stack + th->stack_size) {
if (cfp->ep == ep) {
VALUE epc = cfp->pc - cfp->iseq->iseq_encoded;
rb_iseq_t *iseq = cfp->iseq;
int i;
for (i=0; i<iseq->catch_table_size; i++) {
struct iseq_catch_table_entry *entry = &iseq->catch_table[i];
if (entry->type == CATCH_TYPE_BREAK &&
entry->start < epc && entry->end >= epc) {
if (entry->cont == epc) {
goto found;
}
else {
break;
}
}
}
break;
found:
pt = ep;
is_orphan = 0;
break;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
}
if (is_orphan) {
rb_vm_localjump_error("break from proc-closure", throwobj, TAG_BREAK);
}
}
else if (state == TAG_RETRY) {
rb_num_t i;
pt = VM_EP_PREV_EP(GET_EP());
for (i = 0; i < level; i++) {
pt = GC_GUARDED_PTR_REF((VALUE *) * pt);
}
}
else if (state == TAG_RETURN) {
rb_control_frame_t *cfp = GET_CFP();
VALUE *ep = GET_EP();
VALUE *target_lep = VM_CF_LEP(cfp);
int in_class_frame = 0;
/* check orphan and get dfp */
while ((VALUE *) cfp < th->stack + th->stack_size) {
VALUE *lep = VM_CF_LEP(cfp);
if (!target_lep) {
target_lep = lep;
}
if (lep == target_lep && cfp->iseq->type == ISEQ_TYPE_CLASS) {
in_class_frame = 1;
target_lep = 0;
}
if (lep == target_lep) {
if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_LAMBDA) {
VALUE *tep = ep;
if (in_class_frame) {
/* lambda {class A; ... return ...; end} */
ep = cfp->ep;
goto valid_return;
}
while (target_lep != tep) {
if (cfp->ep == tep) {
/* in lambda */
ep = cfp->ep;
goto valid_return;
}
tep = VM_EP_PREV_EP(tep);
}
}
}
if (cfp->ep == target_lep && cfp->iseq->type == ISEQ_TYPE_METHOD) {
ep = target_lep;
goto valid_return;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
rb_vm_localjump_error("unexpected return", throwobj, TAG_RETURN);
valid_return:
pt = ep;
}
else {
rb_bug("isns(throw): unsupport throw type");
}
}
th->state = state;
return (VALUE)NEW_THROW_OBJECT(throwobj, (VALUE) pt, state);
}
else {
/* continue throw */
VALUE err = throwobj;
if (FIXNUM_P(err)) {
th->state = FIX2INT(err);
}
else if (SYMBOL_P(err)) {
th->state = TAG_THROW;
}
else if (BUILTIN_TYPE(err) == T_NODE) {
th->state = GET_THROWOBJ_STATE(err);
}
else {
th->state = TAG_RAISE;
/*th->state = FIX2INT(rb_ivar_get(err, idThrowState));*/
}
return err;
}
}
static inline void
vm_expandarray(rb_control_frame_t *cfp, VALUE ary, rb_num_t num, int flag)
{
int is_splat = flag & 0x01;
rb_num_t space_size = num + is_splat;
VALUE *base = cfp->sp;
const VALUE *ptr;
rb_num_t len;
if (!RB_TYPE_P(ary, T_ARRAY)) {
ary = rb_ary_to_ary(ary);
}
cfp->sp += space_size;
ptr = RARRAY_CONST_PTR(ary);
len = (rb_num_t)RARRAY_LEN(ary);
if (flag & 0x02) {
/* post: ..., nil ,ary[-1], ..., ary[0..-num] # top */
rb_num_t i = 0, j;
if (len < num) {
for (i=0; i<num-len; i++) {
*base++ = Qnil;
}
}
for (j=0; i<num; i++, j++) {
VALUE v = ptr[len - j - 1];
*base++ = v;
}
if (is_splat) {
*base = rb_ary_new4(len - j, ptr);
}
}
else {
/* normal: ary[num..-1], ary[num-2], ary[num-3], ..., ary[0] # top */
rb_num_t i;
VALUE *bptr = &base[space_size - 1];
for (i=0; i<num; i++) {
if (len <= i) {
for (; i<num; i++) {
*bptr-- = Qnil;
}
break;
}
*bptr-- = ptr[i];
}
if (is_splat) {
if (num > len) {
*bptr = rb_ary_new();
}
else {
*bptr = rb_ary_new4(len - num, ptr + num);
}
}
}
RB_GC_GUARD(ary);
}
static VALUE vm_call_general(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci);
static void
vm_search_method(rb_call_info_t *ci, VALUE recv)
{
VALUE klass = CLASS_OF(recv);
#if OPT_INLINE_METHOD_CACHE
if (LIKELY(GET_VM_STATE_VERSION() == ci->vmstat && RCLASS_EXT(klass)->seq == ci->seq)) {
/* cache hit! */
return;
}
#endif
ci->me = rb_method_entry(klass, ci->mid, &ci->defined_class);
ci->klass = klass;
ci->call = vm_call_general;
#if OPT_INLINE_METHOD_CACHE
ci->vmstat = GET_VM_STATE_VERSION();
ci->seq = RCLASS_EXT(klass)->seq;
#endif
}
static inline int
check_cfunc(const rb_method_entry_t *me, VALUE (*func)())
{
if (me && me->def->type == VM_METHOD_TYPE_CFUNC &&
me->def->body.cfunc.func == func) {
return 1;
}
else {
return 0;
}
}
static
#ifndef NO_BIG_INLINE
inline
#endif
VALUE
opt_eq_func(VALUE recv, VALUE obj, CALL_INFO ci)
{
if (FIXNUM_2_P(recv, obj) &&
BASIC_OP_UNREDEFINED_P(BOP_EQ, FIXNUM_REDEFINED_OP_FLAG)) {
return (recv == obj) ? Qtrue : Qfalse;
}
else if (FLONUM_2_P(recv, obj) &&
BASIC_OP_UNREDEFINED_P(BOP_EQ, FLOAT_REDEFINED_OP_FLAG)) {
return (recv == obj) ? Qtrue : Qfalse;
}
else if (!SPECIAL_CONST_P(recv) && !SPECIAL_CONST_P(obj)) {
if (RBASIC_CLASS(recv) == rb_cFloat &&
RBASIC_CLASS(obj) == rb_cFloat &&
BASIC_OP_UNREDEFINED_P(BOP_EQ, FLOAT_REDEFINED_OP_FLAG)) {
double a = RFLOAT_VALUE(recv);
double b = RFLOAT_VALUE(obj);
if (isnan(a) || isnan(b)) {
return Qfalse;
}
return (a == b) ? Qtrue : Qfalse;
}
else if (RBASIC_CLASS(recv) == rb_cString &&
RBASIC_CLASS(obj) == rb_cString &&
BASIC_OP_UNREDEFINED_P(BOP_EQ, STRING_REDEFINED_OP_FLAG)) {
return rb_str_equal(recv, obj);
}
}
{
vm_search_method(ci, recv);
if (check_cfunc(ci->me, rb_obj_equal)) {
return recv == obj ? Qtrue : Qfalse;
}
}
return Qundef;
}
VALUE
rb_equal_opt(VALUE obj1, VALUE obj2)
{
rb_call_info_t ci;
ci.mid = idEq;
ci.klass = 0;
ci.vmstat = 0;
ci.me = NULL;
ci.defined_class = 0;
return opt_eq_func(obj1, obj2, &ci);
}
static VALUE
vm_call0(rb_thread_t*, VALUE, ID, int, const VALUE*, const rb_method_entry_t*, VALUE);
static VALUE
check_match(VALUE pattern, VALUE target, enum vm_check_match_type type)
{
switch (type) {
case VM_CHECKMATCH_TYPE_WHEN:
return pattern;
case VM_CHECKMATCH_TYPE_RESCUE:
if (!rb_obj_is_kind_of(pattern, rb_cModule)) {
rb_raise(rb_eTypeError, "class or module required for rescue clause");
}
/* fall through */
case VM_CHECKMATCH_TYPE_CASE: {
VALUE defined_class;
rb_method_entry_t *me = rb_method_entry_with_refinements(CLASS_OF(pattern), idEqq, &defined_class);
return vm_call0(GET_THREAD(), pattern, idEqq, 1, &target, me, defined_class);
}
default:
rb_bug("check_match: unreachable");
}
}
#if defined(_MSC_VER) && _MSC_VER < 1300
#define CHECK_CMP_NAN(a, b) if (isnan(a) || isnan(b)) return Qfalse;
#else
#define CHECK_CMP_NAN(a, b) /* do nothing */
#endif
static inline VALUE
double_cmp_lt(double a, double b)
{
CHECK_CMP_NAN(a, b);
return a < b ? Qtrue : Qfalse;
}
static inline VALUE
double_cmp_le(double a, double b)
{
CHECK_CMP_NAN(a, b);
return a <= b ? Qtrue : Qfalse;
}
static inline VALUE
double_cmp_gt(double a, double b)
{
CHECK_CMP_NAN(a, b);
return a > b ? Qtrue : Qfalse;
}
static inline VALUE
double_cmp_ge(double a, double b)
{
CHECK_CMP_NAN(a, b);
return a >= b ? Qtrue : Qfalse;
}
static VALUE *
vm_base_ptr(rb_control_frame_t *cfp)
{
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
VALUE *bp = prev_cfp->sp + cfp->iseq->local_size + 1;
if (cfp->iseq->type == ISEQ_TYPE_METHOD) {
/* adjust `self' */
bp += 1;