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ruby--ruby/vm_insnhelper.c
nobu fd639a4c3b vm.c: constify 
* vm.c (rb_vm_get_binding_creatable_next_cfp): constify arguments.
  (rb_vm_get_ruby_level_next_cfp): ditto.
  (vm_get_ruby_level_caller_cfp): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48875 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-12-17 03:08:20 +00:00

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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(const rb_thread_t *th, const rb_control_frame_t *cfp);
VALUE
ruby_vm_sysstack_error_copy(void)
{
VALUE e = rb_obj_alloc(rb_eSysStackError);
rb_obj_copy_ivar(e, sysstack_error);
return e;
}
static void
vm_stackoverflow(void)
{
rb_exc_raise(ruby_vm_sysstack_error_copy());
}
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,
int stack_max)
{
rb_control_frame_t *const cfp = th->cfp - 1;
int i;
/* check stack overflow */
CHECK_VM_STACK_OVERFLOW0(cfp, sp, local_size + 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_arity_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);
}
void
rb_error_arity(int argc, int min, int max)
{
rb_exc_raise(rb_arity_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) {
RB_OBJ_WRITE(cref, &cref->nd_next, vm_get_cref0(blockptr->iseq, blockptr->ep));
}
else if (cfp) {
RB_OBJ_WRITE(cref, &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;
rb_const_entry_t *ce;
search_continue:
if ((ce = rb_const_lookup(klass, id))) {
val = ce->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;
const long len = ROBJECT_NUMIV(obj);
const VALUE *const ptr = ROBJECT_IVPTR(obj);
if (LIKELY(is_attr ? ci->aux.index > 0 : ic->ic_serial == RCLASS_SERIAL(klass))) {
int index = !is_attr ? (int)ic->ic_value.index : ci->aux.index - 1;
if (index < len) {
val = ptr[index];
}
}
else {
st_data_t index;
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_serial = RCLASS_SERIAL(klass);
}
else { /* call_info */
ci->aux.index = (int)index + 1;
}
}
}
}
if (UNLIKELY(val == Qundef)) {
if (!is_attr && RTEST(ruby_verbose))
rb_warning("instance variable %"PRIsVALUE" not initialized", QUOTE_ID(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_serial == RCLASS_SERIAL(klass)) ||
(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) {
RB_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_serial = RCLASS_SERIAL(klass);
}
else if (index >= INT_MAX) {
rb_raise(rb_eArgError, "too many instance variables");
}
else {
ci->aux.index = (int)(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;
struct iseq_catch_table *ct = iseq->catch_table;
struct iseq_catch_table_entry *entry;
int i;
for (i=0; i<ct->size; i++) {
entry = &ct->entries[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_GLOBAL_METHOD_STATE() == ci->method_state && RCLASS_SERIAL(klass) == ci->class_serial)) {
/* 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->method_state = GET_GLOBAL_METHOD_STATE();
ci->class_serial = RCLASS_SERIAL(klass);
#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.method_state = 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);
if (me) {
return vm_call0(GET_THREAD(), pattern, idEqq, 1, &target, me, defined_class);
}
else {
/* fallback to funcall (e.g. method_missing) */
return rb_funcall2(pattern, idEqq, 1, &target);
}
}
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;
}
#if VM_DEBUG_BP_CHECK
if (bp != cfp->bp_check) {
fprintf(stderr, "bp_check: %ld, bp: %ld\n",
(long)(cfp->bp_check - GET_THREAD()->stack),
(long)(bp - GET_THREAD()->stack));
rb_bug("vm_base_ptr: unreachable");
}
#endif
return bp;
}
/* method call processes with call_info */
#include "vm_args.c"
static VALUE vm_call_iseq_setup_2(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci);
static inline VALUE vm_call_iseq_setup_normal(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci);
static inline VALUE vm_call_iseq_setup_tailcall(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci);
static inline VALUE
vm_callee_setup_block_arg_arg0_check(VALUE *argv)
{
VALUE ary, arg0 = argv[0];
ary = rb_check_array_type(arg0);
argv[0] = arg0;
return ary;
}
static inline int
vm_callee_setup_block_arg_arg0_splat(rb_control_frame_t *cfp, const rb_iseq_t *iseq, VALUE *argv, VALUE ary)
{
int i;
long len = RARRAY_LEN(ary);
CHECK_VM_STACK_OVERFLOW(cfp, iseq->param.lead_num);
for (i=0; i<len && i<iseq->param.lead_num; i++) {
argv[i] = RARRAY_AREF(ary, i);
}
return i;
}
static inline int
simple_iseq_p(const rb_iseq_t *iseq)
{
return iseq->param.flags.has_opt == FALSE &&
iseq->param.flags.has_rest == FALSE &&
iseq->param.flags.has_post == FALSE &&
iseq->param.flags.has_kw == FALSE &&
iseq->param.flags.has_kwrest == FALSE &&
iseq->param.flags.has_block == FALSE;
}
static inline void
vm_callee_setup_block_arg(rb_thread_t *th, rb_call_info_t *ci, const rb_iseq_t *iseq, VALUE *argv, const enum arg_setup_type arg_setup_type)
{
if (LIKELY(simple_iseq_p(iseq))) {
rb_control_frame_t *cfp = th->cfp;
VALUE arg0;
CALLER_SETUP_ARG(cfp, ci); /* splat arg */
if (arg_setup_type == arg_setup_block &&
ci->argc == 1 &&
iseq->param.flags.has_lead &&
!iseq->param.flags.ambiguous_param0 &&
!NIL_P(arg0 = vm_callee_setup_block_arg_arg0_check(argv))) {
ci->argc = vm_callee_setup_block_arg_arg0_splat(cfp, iseq, argv, arg0);
}
if (ci->argc != iseq->param.lead_num) {
if (arg_setup_type == arg_setup_block) {
if (ci->argc < iseq->param.lead_num) {
int i;
CHECK_VM_STACK_OVERFLOW(cfp, iseq->param.lead_num);
for (i=ci->argc; i<iseq->param.lead_num; i++) argv[i] = Qnil;
ci->argc = iseq->param.lead_num; /* fill rest parameters */
}
else if (ci->argc > iseq->param.lead_num) {
ci->argc = iseq->param.lead_num; /* simply truncate arguments */
}
}
else if (arg_setup_type == arg_setup_lambda &&
ci->argc == 1 &&
!NIL_P(arg0 = vm_callee_setup_block_arg_arg0_check(argv)) &&
RARRAY_LEN(arg0) == iseq->param.lead_num) {
ci->argc = vm_callee_setup_block_arg_arg0_splat(cfp, iseq, argv, arg0);
}
else {
argument_arity_error(th, iseq, ci->argc, iseq->param.lead_num, iseq->param.lead_num);
}
}
ci->aux.opt_pc = 0;
}
else {
ci->aux.opt_pc = setup_parameters_complex(th, iseq, ci, argv, arg_setup_type);
}
}
static inline void
vm_callee_setup_arg(rb_thread_t *th, rb_call_info_t *ci, const rb_iseq_t *iseq, VALUE *argv)
{
if (LIKELY(simple_iseq_p(iseq))) {
rb_control_frame_t *cfp = th->cfp;
CALLER_SETUP_ARG(cfp, ci); /* splat arg */
if (ci->argc != iseq->param.lead_num) {
argument_arity_error(th, iseq, ci->argc, iseq->param.lead_num, iseq->param.lead_num);
}
ci->aux.opt_pc = 0;
CI_SET_FASTPATH(ci,
(UNLIKELY(ci->flag & VM_CALL_TAILCALL) ? vm_call_iseq_setup_tailcall : vm_call_iseq_setup_normal),
(!IS_ARGS_SPLAT(ci) && !IS_ARGS_KEYWORD(ci) && !(ci->me->flag & NOEX_PROTECTED)));
}
else {
ci->aux.opt_pc = setup_parameters_complex(th, iseq, ci, argv, arg_setup_method);
}
}
static VALUE
vm_call_iseq_setup(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
vm_callee_setup_arg(th, ci, ci->me->def->body.iseq, cfp->sp - ci->argc);
return vm_call_iseq_setup_2(th, cfp, ci);
}
static VALUE
vm_call_iseq_setup_2(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
if (LIKELY(!(ci->flag & VM_CALL_TAILCALL))) {
return vm_call_iseq_setup_normal(th, cfp, ci);
}
else {
return vm_call_iseq_setup_tailcall(th, cfp, ci);
}
}
static inline VALUE
vm_call_iseq_setup_normal(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
int i, local_size;
VALUE *argv = cfp->sp - ci->argc;
rb_iseq_t *iseq = ci->me->def->body.iseq;
VALUE *sp = argv + iseq->param.size;
/* clear local variables (arg_size...local_size) */
for (i = iseq->param.size, local_size = iseq->local_size; i < local_size; i++) {
*sp++ = Qnil;
}
vm_push_frame(th, iseq, VM_FRAME_MAGIC_METHOD, ci->recv, ci->defined_class,
VM_ENVVAL_BLOCK_PTR(ci->blockptr),
iseq->iseq_encoded + ci->aux.opt_pc, sp, 0, ci->me, iseq->stack_max);
cfp->sp = argv - 1 /* recv */;
return Qundef;
}
static inline VALUE
vm_call_iseq_setup_tailcall(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
int i;
VALUE *argv = cfp->sp - ci->argc;
rb_iseq_t *iseq = ci->me->def->body.iseq;
VALUE *src_argv = argv;
VALUE *sp_orig, *sp;
VALUE finish_flag = VM_FRAME_TYPE_FINISH_P(cfp) ? VM_FRAME_FLAG_FINISH : 0;
cfp = th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp); /* pop cf */
RUBY_VM_CHECK_INTS(th);
sp_orig = sp = cfp->sp;
/* push self */
sp[0] = ci->recv;
sp++;
/* copy arguments */
for (i=0; i < iseq->param.size; i++) {
*sp++ = src_argv[i];
}
/* clear local variables */
for (i = 0; i < iseq->local_size - iseq->param.size; i++) {
*sp++ = Qnil;
}
vm_push_frame(th, iseq, VM_FRAME_MAGIC_METHOD | finish_flag,
ci->recv, ci->defined_class, VM_ENVVAL_BLOCK_PTR(ci->blockptr),
iseq->iseq_encoded + ci->aux.opt_pc, sp, 0, ci->me, iseq->stack_max);
cfp->sp = sp_orig;
return Qundef;
}
static VALUE
call_cfunc_m2(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, rb_ary_new4(argc, argv));
}
static VALUE
call_cfunc_m1(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(argc, argv, recv);
}
static VALUE
call_cfunc_0(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv);
}
static VALUE
call_cfunc_1(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0]);
}
static VALUE
call_cfunc_2(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1]);
}
static VALUE
call_cfunc_3(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2]);
}
static VALUE
call_cfunc_4(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3]);
}
static VALUE
call_cfunc_5(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4]);
}
static VALUE
call_cfunc_6(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]);
}
static VALUE
call_cfunc_7(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6]);
}
static VALUE
call_cfunc_8(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7]);
}
static VALUE
call_cfunc_9(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8]);
}
static VALUE
call_cfunc_10(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9]);
}
static VALUE
call_cfunc_11(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10]);
}
static VALUE
call_cfunc_12(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11]);
}
static VALUE
call_cfunc_13(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12]);
}
static VALUE
call_cfunc_14(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13]);
}
static VALUE
call_cfunc_15(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *argv)
{
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14]);
}
#ifndef VM_PROFILE
#define VM_PROFILE 0
#endif
#if VM_PROFILE
static int vm_profile_counter[4];
#define VM_PROFILE_UP(x) (vm_profile_counter[x]++)
#define VM_PROFILE_ATEXIT() atexit(vm_profile_show_result)
static void
vm_profile_show_result(void)
{
fprintf(stderr, "VM Profile results: \n");
fprintf(stderr, "r->c call: %d\n", vm_profile_counter[0]);
fprintf(stderr, "r->c popf: %d\n", vm_profile_counter[1]);
fprintf(stderr, "c->c call: %d\n", vm_profile_counter[2]);
fprintf(stderr, "r->c popf: %d\n", vm_profile_counter[3]);
}
#else
#define VM_PROFILE_UP(x)
#define VM_PROFILE_ATEXIT()
#endif
static inline
const rb_method_cfunc_t *
vm_method_cfunc_entry(const rb_method_entry_t *me)
{
#if VM_DEBUG_VERIFY_METHOD_CACHE
switch (me->def->type) {
case VM_METHOD_TYPE_CFUNC:
case VM_METHOD_TYPE_NOTIMPLEMENTED:
break;
# define METHOD_BUG(t) case VM_METHOD_TYPE_##t: rb_bug("wrong method type: " #t)
METHOD_BUG(ISEQ);
METHOD_BUG(ATTRSET);
METHOD_BUG(IVAR);
METHOD_BUG(BMETHOD);
METHOD_BUG(ZSUPER);
METHOD_BUG(UNDEF);
METHOD_BUG(OPTIMIZED);
METHOD_BUG(MISSING);
METHOD_BUG(REFINED);
# undef METHOD_BUG
default:
rb_bug("wrong method type: %d", me->def->type);
}
#endif
return &me->def->body.cfunc;
}
static VALUE
vm_call_cfunc_with_frame(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
VALUE val;
const rb_method_entry_t *me = ci->me;
const rb_method_cfunc_t *cfunc = vm_method_cfunc_entry(me);
int len = cfunc->argc;
/* don't use `ci' after EXEC_EVENT_HOOK because ci can be override */
VALUE recv = ci->recv;
VALUE defined_class = ci->defined_class;
rb_block_t *blockptr = ci->blockptr;
int argc = ci->argc;
RUBY_DTRACE_CMETHOD_ENTRY_HOOK(th, me->klass, me->called_id);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, me->called_id, me->klass, Qundef);
vm_push_frame(th, 0, VM_FRAME_MAGIC_CFUNC, recv, defined_class,
VM_ENVVAL_BLOCK_PTR(blockptr), 0, th->cfp->sp, 1, me, 0);
if (len >= 0) rb_check_arity(argc, len, len);
reg_cfp->sp -= argc + 1;
VM_PROFILE_UP(0);
val = (*cfunc->invoker)(cfunc->func, recv, argc, reg_cfp->sp + 1);
if (reg_cfp != th->cfp + 1) {
rb_bug("vm_call_cfunc - cfp consistency error");
}
vm_pop_frame(th);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, recv, me->called_id, me->klass, val);
RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, me->klass, me->called_id);
return val;
}
#if OPT_CALL_CFUNC_WITHOUT_FRAME
static VALUE
vm_call_cfunc_latter(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
VALUE val;
int argc = ci->argc;
VALUE *argv = STACK_ADDR_FROM_TOP(argc);
const rb_method_cfunc_t *cfunc = vm_method_cfunc_entry(ci->me);
th->passed_ci = ci;
reg_cfp->sp -= argc + 1;
ci->aux.inc_sp = argc + 1;
VM_PROFILE_UP(0);
val = (*cfunc->invoker)(cfunc->func, ci, argv);
/* check */
if (reg_cfp == th->cfp) { /* no frame push */
if (UNLIKELY(th->passed_ci != ci)) {
rb_bug("vm_call_cfunc_latter: passed_ci error (ci: %p, passed_ci: %p)", ci, th->passed_ci);
}
th->passed_ci = 0;
}
else {
if (UNLIKELY(reg_cfp != RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp))) {
rb_bug("vm_call_cfunc_latter: cfp consistency error (%p, %p)", reg_cfp, th->cfp+1);
}
vm_pop_frame(th);
VM_PROFILE_UP(1);
}
return val;
}
static VALUE
vm_call_cfunc(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
VALUE val;
const rb_method_entry_t *me = ci->me;
int len = vm_method_cfunc_entry(me)->argc;
VALUE recv = ci->recv;
CALLER_SETUP_ARG(reg_cfp, ci);
if (len >= 0) rb_check_arity(ci->argc, len, len);
RUBY_DTRACE_CMETHOD_ENTRY_HOOK(th, me->klass, me->called_id);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, me->called_id, me->klass, Qnil);
if (!(ci->me->flag & NOEX_PROTECTED) &&
!(ci->flag & VM_CALL_ARGS_SPLAT) &&
!(ci->kw_arg != NULL)) {
CI_SET_FASTPATH(ci, vm_call_cfunc_latter, 1);
}
val = vm_call_cfunc_latter(th, reg_cfp, ci);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, recv, me->called_id, me->klass, val);
RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, me->klass, me->called_id);
return val;
}
void
vm_call_cfunc_push_frame(rb_thread_t *th)
{
rb_call_info_t *ci = th->passed_ci;
const rb_method_entry_t *me = ci->me;
th->passed_ci = 0;
vm_push_frame(th, 0, VM_FRAME_MAGIC_CFUNC, ci->recv, ci->defined_class,
VM_ENVVAL_BLOCK_PTR(ci->blockptr), 0, th->cfp->sp + ci->aux.inc_sp, 1, me);
if (ci->call != vm_call_general) {
ci->call = vm_call_cfunc_with_frame;
}
}
#else /* OPT_CALL_CFUNC_WITHOUT_FRAME */
static VALUE
vm_call_cfunc(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
CALLER_SETUP_ARG(reg_cfp, ci);
return vm_call_cfunc_with_frame(th, reg_cfp, ci);
}
#endif
static VALUE
vm_call_ivar(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
VALUE val = vm_getivar(ci->recv, ci->me->def->body.attr.id, 0, ci, 1);
cfp->sp -= 1;
return val;
}
static VALUE
vm_call_attrset(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
VALUE val = vm_setivar(ci->recv, ci->me->def->body.attr.id, *(cfp->sp - 1), 0, ci, 1);
cfp->sp -= 2;
return val;
}
static inline VALUE
vm_call_bmethod_body(rb_thread_t *th, rb_call_info_t *ci, const VALUE *argv)
{
rb_proc_t *proc;
VALUE val;
/* control block frame */
th->passed_bmethod_me = ci->me;
GetProcPtr(ci->me->def->body.proc, proc);
val = vm_invoke_proc(th, proc, ci->recv, ci->defined_class, ci->argc, argv, ci->blockptr);
return val;
}
static VALUE
vm_call_bmethod(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
VALUE *argv;
CALLER_SETUP_ARG(cfp, ci);
argv = ALLOCA_N(VALUE, ci->argc);
MEMCPY(argv, cfp->sp - ci->argc, VALUE, ci->argc);
cfp->sp += - ci->argc - 1;
return vm_call_bmethod_body(th, ci, argv);
}
static
#ifdef _MSC_VER
__forceinline
#else
inline
#endif
VALUE vm_call_method(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci);
static VALUE
vm_call_opt_send(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
int i;
VALUE sym;
rb_call_info_t ci_entry;
CALLER_SETUP_ARG(reg_cfp, ci);
i = ci->argc - 1;
if (ci->argc == 0) {
rb_raise(rb_eArgError, "no method name given");
}
ci_entry = *ci; /* copy ci entry */
ci = &ci_entry;
ci->kw_arg = NULL; /* TODO: delegate kw_arg without making a Hash object */
sym = TOPN(i);
if (SYMBOL_P(sym)) {
ci->mid = SYM2ID(sym);
}
else if (!(ci->mid = rb_check_id(&sym))) {
if (rb_method_basic_definition_p(CLASS_OF(ci->recv), idMethodMissing)) {
VALUE exc = make_no_method_exception(rb_eNoMethodError, NULL, ci->recv, rb_long2int(ci->argc), &TOPN(i));
rb_exc_raise(exc);
}
ci->mid = rb_to_id(sym);
}
/* shift arguments */
if (i > 0) {
MEMMOVE(&TOPN(i), &TOPN(i-1), VALUE, i);
}
ci->me = rb_method_entry_without_refinements(CLASS_OF(ci->recv), ci->mid, &ci->defined_class);
ci->argc -= 1;
DEC_SP(1);
ci->flag = VM_CALL_FCALL | VM_CALL_OPT_SEND;
return vm_call_method(th, reg_cfp, ci);
}
static VALUE
vm_call_opt_call(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
rb_proc_t *proc;
int argc;
VALUE *argv;
CALLER_SETUP_ARG(cfp, ci);
argc = ci->argc;
argv = ALLOCA_N(VALUE, argc);
GetProcPtr(ci->recv, proc);
MEMCPY(argv, cfp->sp - argc, VALUE, argc);
cfp->sp -= argc + 1;
return rb_vm_invoke_proc(th, proc, argc, argv, ci->blockptr);
}
static VALUE
vm_call_method_missing(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
VALUE *argv = STACK_ADDR_FROM_TOP(ci->argc);
rb_call_info_t ci_entry;
CALLER_SETUP_ARG(reg_cfp, ci);
ci_entry.flag = VM_CALL_FCALL | VM_CALL_OPT_SEND;
ci_entry.argc = ci->argc+1;
ci_entry.mid = idMethodMissing;
ci_entry.blockptr = ci->blockptr;
ci_entry.recv = ci->recv;
ci_entry.me = rb_method_entry(CLASS_OF(ci_entry.recv), idMethodMissing, &ci_entry.defined_class);
ci_entry.kw_arg = NULL;
/* shift arguments: m(a, b, c) #=> method_missing(:m, a, b, c) */
CHECK_VM_STACK_OVERFLOW(reg_cfp, 1);
if (ci->argc > 0) {
MEMMOVE(argv+1, argv, VALUE, ci->argc);
}
argv[0] = ID2SYM(ci->mid);
INC_SP(1);
th->method_missing_reason = ci->aux.missing_reason;
return vm_call_method(th, reg_cfp, &ci_entry);
}
static inline VALUE
find_refinement(VALUE refinements, VALUE klass)
{
if (NIL_P(refinements)) {
return Qnil;
}
return rb_hash_lookup(refinements, klass);
}
static int rb_method_definition_eq(const rb_method_definition_t *d1, const rb_method_definition_t *d2);
static VALUE vm_call_super_method(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci);
static rb_control_frame_t *
current_method_entry(rb_thread_t *th, rb_control_frame_t *cfp)
{
rb_control_frame_t *top_cfp = cfp;
if (cfp->iseq && cfp->iseq->type == ISEQ_TYPE_BLOCK) {
rb_iseq_t *local_iseq = cfp->iseq->local_iseq;
do {
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
if (RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
/* TODO: orphan block */
return top_cfp;
}
} while (cfp->iseq != local_iseq);
}
return cfp;
}
static
#ifdef _MSC_VER
__forceinline
#else
inline
#endif
VALUE
vm_call_method(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{
int enable_fastpath = 1;
rb_call_info_t ci_temp;
start_method_dispatch:
if (ci->me != 0) {
if ((ci->me->flag == 0)) {
VALUE klass;
normal_method_dispatch:
switch (ci->me->def->type) {
case VM_METHOD_TYPE_ISEQ:{
CI_SET_FASTPATH(ci, vm_call_iseq_setup, enable_fastpath);
return vm_call_iseq_setup(th, cfp, ci);
}
case VM_METHOD_TYPE_NOTIMPLEMENTED:
case VM_METHOD_TYPE_CFUNC:
CI_SET_FASTPATH(ci, vm_call_cfunc, enable_fastpath);
return vm_call_cfunc(th, cfp, ci);
case VM_METHOD_TYPE_ATTRSET:{
CALLER_SETUP_ARG(cfp, ci);
rb_check_arity(ci->argc, 1, 1);
ci->aux.index = 0;
CI_SET_FASTPATH(ci, vm_call_attrset, enable_fastpath && !(ci->flag & VM_CALL_ARGS_SPLAT));
return vm_call_attrset(th, cfp, ci);
}
case VM_METHOD_TYPE_IVAR:{
CALLER_SETUP_ARG(cfp, ci);
rb_check_arity(ci->argc, 0, 0);
ci->aux.index = 0;
CI_SET_FASTPATH(ci, vm_call_ivar, enable_fastpath && !(ci->flag & VM_CALL_ARGS_SPLAT));
return vm_call_ivar(th, cfp, ci);
}
case VM_METHOD_TYPE_MISSING:{
ci->aux.missing_reason = 0;
CI_SET_FASTPATH(ci, vm_call_method_missing, enable_fastpath);
return vm_call_method_missing(th, cfp, ci);
}
case VM_METHOD_TYPE_BMETHOD:{
CI_SET_FASTPATH(ci, vm_call_bmethod, enable_fastpath);
return vm_call_bmethod(th, cfp, ci);
}
case VM_METHOD_TYPE_ZSUPER:{
klass = ci->me->klass;
klass = RCLASS_ORIGIN(klass);
zsuper_method_dispatch:
klass = RCLASS_SUPER(klass);
if (!klass) {
ci->me = 0;
goto start_method_dispatch;
}
ci_temp = *ci;
ci = &ci_temp;
ci->me = rb_method_entry(klass, ci->mid, &ci->defined_class);
if (ci->me != 0) {
goto normal_method_dispatch;
}
else {
goto start_method_dispatch;
}
}
case VM_METHOD_TYPE_OPTIMIZED:{
switch (ci->me->def->body.optimize_type) {
case OPTIMIZED_METHOD_TYPE_SEND:
CI_SET_FASTPATH(ci, vm_call_opt_send, enable_fastpath);
return vm_call_opt_send(th, cfp, ci);
case OPTIMIZED_METHOD_TYPE_CALL:
CI_SET_FASTPATH(ci, vm_call_opt_call, enable_fastpath);
return vm_call_opt_call(th, cfp, ci);
default:
rb_bug("vm_call_method: unsupported optimized method type (%d)",
ci->me->def->body.optimize_type);
}
break;
}
case VM_METHOD_TYPE_UNDEF:
break;
case VM_METHOD_TYPE_REFINED:{
NODE *cref = rb_vm_get_cref(cfp->iseq, cfp->ep);
VALUE refinements = cref ? cref->nd_refinements : Qnil;
VALUE refinement, defined_class;
rb_method_entry_t *me;
refinement = find_refinement(refinements,
ci->defined_class);
if (NIL_P(refinement)) {
goto no_refinement_dispatch;
}
me = rb_method_entry(refinement, ci->mid, &defined_class);
if (me) {
if (ci->call == vm_call_super_method) {
rb_control_frame_t *top_cfp = current_method_entry(th, cfp);
if (top_cfp->me &&
rb_method_definition_eq(me->def, top_cfp->me->def)) {
goto no_refinement_dispatch;
}
}
ci->me = me;
ci->defined_class = defined_class;
if (me->def->type != VM_METHOD_TYPE_REFINED) {
goto start_method_dispatch;
}
}
no_refinement_dispatch:
if (ci->me->def->body.orig_me) {
ci->me = ci->me->def->body.orig_me;
if (UNDEFINED_METHOD_ENTRY_P(ci->me)) {
ci->me = 0;
}
goto start_method_dispatch;
}
else {
klass = ci->me->klass;
goto zsuper_method_dispatch;
}
}
}
rb_bug("vm_call_method: unsupported method type (%d)", ci->me->def->type);
}
else {
int noex_safe;
if (!(ci->flag & VM_CALL_FCALL) && (ci->me->flag & NOEX_MASK) & NOEX_PRIVATE) {
int stat = NOEX_PRIVATE;
if (ci->flag & VM_CALL_VCALL) {
stat |= NOEX_VCALL;
}
ci->aux.missing_reason = stat;
CI_SET_FASTPATH(ci, vm_call_method_missing, 1);
return vm_call_method_missing(th, cfp, ci);
}
else if (!(ci->flag & VM_CALL_OPT_SEND) && (ci->me->flag & NOEX_MASK) & NOEX_PROTECTED) {
enable_fastpath = 0;
if (!rb_obj_is_kind_of(cfp->self, ci->defined_class)) {
ci->aux.missing_reason = NOEX_PROTECTED;
return vm_call_method_missing(th, cfp, ci);
}
else {
goto normal_method_dispatch;
}
}
else if ((noex_safe = NOEX_SAFE(ci->me->flag)) > th->safe_level && (noex_safe > 2)) {
rb_raise(rb_eSecurityError, "calling insecure method: %"PRIsVALUE, rb_id2str(ci->mid));
}
else {
goto normal_method_dispatch;
}
}
}
else {
/* method missing */
int stat = 0;
if (ci->flag & VM_CALL_VCALL) {
stat |= NOEX_VCALL;
}
if (ci->flag & VM_CALL_SUPER) {
stat |= NOEX_SUPER;
}
if (ci->mid == idMethodMissing) {
rb_control_frame_t *reg_cfp = cfp;
VALUE *argv = STACK_ADDR_FROM_TOP(ci->argc);
rb_raise_method_missing(th, ci->argc, argv, ci->recv, stat);
}
else {
ci->aux.missing_reason = stat;
CI_SET_FASTPATH(ci, vm_call_method_missing, 1);
return vm_call_method_missing(th, cfp, ci);
}
}
rb_bug("vm_call_method: unreachable");
}
static VALUE
vm_call_general(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
return vm_call_method(th, reg_cfp, ci);
}
static VALUE
vm_call_super_method(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
return vm_call_method(th, reg_cfp, ci);
}
/* super */
static inline VALUE
vm_search_normal_superclass(VALUE klass)
{
if (BUILTIN_TYPE(klass) == T_ICLASS &&
FL_TEST(RBASIC(klass)->klass, RMODULE_IS_REFINEMENT)) {
klass = RBASIC(klass)->klass;
}
klass = RCLASS_ORIGIN(klass);
return RCLASS_SUPER(klass);
}
static void
vm_super_outside(void)
{
rb_raise(rb_eNoMethodError, "super called outside of method");
}
static int
vm_search_superclass(rb_control_frame_t *reg_cfp, rb_iseq_t *iseq, VALUE sigval, rb_call_info_t *ci)
{
while (iseq && !iseq->klass) {
iseq = iseq->parent_iseq;
}
if (iseq == 0) {
return -1;
}
ci->mid = iseq->defined_method_id;
if (iseq != iseq->local_iseq) {
/* defined by Module#define_method() */
rb_control_frame_t *lcfp = GET_CFP();
if (!sigval) {
/* zsuper */
return -2;
}
while (lcfp->iseq != iseq) {
rb_thread_t *th = GET_THREAD();
VALUE *tep = VM_EP_PREV_EP(lcfp->ep);
while (1) {
lcfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(lcfp);
if (RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, lcfp)) {
return -1;
}
if (lcfp->ep == tep) {
break;
}
}
}
/* temporary measure for [Bug #2420] [Bug #3136] */
if (!lcfp->me) {
return -1;
}
ci->mid = lcfp->me->def->original_id;
ci->klass = vm_search_normal_superclass(lcfp->klass);
}
else {
ci->klass = vm_search_normal_superclass(reg_cfp->klass);
}
return 0;
}
static void
vm_search_super_method(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
VALUE current_defined_class;
rb_iseq_t *iseq = GET_ISEQ();
VALUE sigval = TOPN(ci->argc);
current_defined_class = GET_CFP()->klass;
if (NIL_P(current_defined_class)) {
vm_super_outside();
}
if (!NIL_P(RCLASS_REFINED_CLASS(current_defined_class))) {
current_defined_class = RCLASS_REFINED_CLASS(current_defined_class);
}
if (BUILTIN_TYPE(current_defined_class) != T_MODULE &&
BUILTIN_TYPE(current_defined_class) != T_ICLASS && /* bound UnboundMethod */
!FL_TEST(current_defined_class, RMODULE_INCLUDED_INTO_REFINEMENT) &&
!rb_obj_is_kind_of(ci->recv, current_defined_class)) {
VALUE m = RB_TYPE_P(current_defined_class, T_ICLASS) ?
RBASIC(current_defined_class)->klass : current_defined_class;
rb_raise(rb_eTypeError,
"self has wrong type to call super in this context: "
"%"PRIsVALUE" (expected %"PRIsVALUE")",
rb_obj_class(ci->recv), m);
}
switch (vm_search_superclass(GET_CFP(), iseq, sigval, ci)) {
case -1:
vm_super_outside();
case -2:
rb_raise(rb_eRuntimeError,
"implicit argument passing of super from method defined"
" by define_method() is not supported."
" Specify all arguments explicitly.");
}
if (!ci->klass) {
/* bound instance method of module */
ci->aux.missing_reason = NOEX_SUPER;
CI_SET_FASTPATH(ci, vm_call_method_missing, 1);
return;
}
/* TODO: use inline cache */
ci->me = rb_method_entry(ci->klass, ci->mid, &ci->defined_class);
ci->call = vm_call_super_method;
while (iseq && !iseq->klass) {
iseq = iseq->parent_iseq;
}
if (ci->me && ci->me->def->type == VM_METHOD_TYPE_ISEQ && ci->me->def->body.iseq == iseq) {
ci->klass = RCLASS_SUPER(ci->defined_class);
ci->me = rb_method_entry(ci->klass, ci->mid, &ci->defined_class);
}
}
/* yield */
static inline int
block_proc_is_lambda(const VALUE procval)
{
rb_proc_t *proc;
if (procval) {
GetProcPtr(procval, proc);
return proc->is_lambda;
}
else {
return 0;
}
}
static inline VALUE
vm_yield_with_cfunc(rb_thread_t *th, const rb_block_t *block,
VALUE self, VALUE defined_class,
int argc, const VALUE *argv,
const rb_block_t *blockargptr)
{
NODE *ifunc = (NODE *) block->iseq;
VALUE val, arg, blockarg;
int lambda = block_proc_is_lambda(block->proc);
if (lambda) {
arg = rb_ary_new4(argc, argv);
}
else if (argc == 0) {
arg = Qnil;
}
else {
arg = argv[0];
}
if (blockargptr) {
if (blockargptr->proc) {
blockarg = blockargptr->proc;
}
else {
blockarg = rb_vm_make_proc(th, blockargptr, rb_cProc);
}
}
else {
blockarg = Qnil;
}
vm_push_frame(th, (rb_iseq_t *)ifunc, VM_FRAME_MAGIC_IFUNC,
self, defined_class,
VM_ENVVAL_PREV_EP_PTR(block->ep), 0,
th->cfp->sp, 1, th->passed_bmethod_me, 0);
val = (*ifunc->nd_cfnc) (arg, ifunc->nd_tval, argc, argv, blockarg);
th->cfp++;
return val;
}
static int
vm_yield_callee_setup_arg(rb_thread_t *th, rb_call_info_t *ci, const rb_iseq_t *iseq, VALUE *argv, enum arg_setup_type arg_setup_type)
{
vm_callee_setup_block_arg(th, ci, iseq, argv, arg_setup_type);
return ci->aux.opt_pc;
}
static int
vm_yield_setup_args(rb_thread_t *th, const rb_iseq_t *iseq, const int argc, VALUE *argv, const rb_block_t *blockptr, enum arg_setup_type arg_setup_type)
{
rb_call_info_t ci_entry;
ci_entry.argc = argc;
ci_entry.blockptr = (rb_block_t *)blockptr;
ci_entry.flag = 0;
ci_entry.kw_arg = NULL;
ci_entry.me = NULL;
return vm_yield_callee_setup_arg(th, &ci_entry, iseq, argv, arg_setup_type);
}
/* ruby iseq -> ruby block iseq */
static VALUE
vm_invoke_block(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *ci)
{
const rb_block_t *block = VM_CF_BLOCK_PTR(reg_cfp);
rb_iseq_t *iseq;
VALUE type = GET_ISEQ()->local_iseq->type;
if ((type != ISEQ_TYPE_METHOD && type != ISEQ_TYPE_CLASS) || block == 0) {
rb_vm_localjump_error("no block given (yield)", Qnil, 0);
}
iseq = block->iseq;
if (BUILTIN_TYPE(iseq) != T_NODE) {
int opt_pc;
const int arg_size = iseq->param.size;
int is_lambda = block_proc_is_lambda(block->proc);
VALUE * const rsp = GET_SP() - ci->argc;
opt_pc = vm_yield_callee_setup_arg(th, ci, iseq, rsp, is_lambda ? arg_setup_lambda : arg_setup_block);
SET_SP(rsp);
vm_push_frame(th, iseq,
is_lambda ? VM_FRAME_MAGIC_LAMBDA : VM_FRAME_MAGIC_BLOCK,
block->self,
block->klass,
VM_ENVVAL_PREV_EP_PTR(block->ep),
iseq->iseq_encoded + opt_pc,
rsp + arg_size,
iseq->local_size - arg_size, 0, iseq->stack_max);
return Qundef;
}
else {
VALUE val;
CALLER_SETUP_ARG(th->cfp, ci);
val = vm_yield_with_cfunc(th, block, block->self, block->klass,
ci->argc, STACK_ADDR_FROM_TOP(ci->argc), 0);
POPN(ci->argc); /* TODO: should put before C/yield? */
return val;
}
}
static VALUE
vm_make_proc_with_iseq(rb_iseq_t *blockiseq)
{
rb_block_t *blockptr;
rb_thread_t *th = GET_THREAD();
rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
if (cfp == 0) {
rb_bug("vm_make_proc_with_iseq: unreachable");
}
blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp);
blockptr->iseq = blockiseq;
blockptr->proc = 0;
return rb_vm_make_proc(th, blockptr, rb_cProc);
}
static VALUE
vm_once_exec(VALUE iseq)
{
VALUE proc = vm_make_proc_with_iseq((rb_iseq_t *)iseq);
return rb_proc_call_with_block(proc, 0, 0, Qnil);
}
static VALUE
vm_once_clear(VALUE data)
{
union iseq_inline_storage_entry *is = (union iseq_inline_storage_entry *)data;
is->once.running_thread = NULL;
return Qnil;
}
rb_control_frame_t *
FUNC_FASTCALL(rb_vm_opt_struct_aref)(rb_thread_t *th, rb_control_frame_t *reg_cfp)
{
TOPN(0) = rb_struct_aref(GET_SELF(), TOPN(0));
return reg_cfp;
}
rb_control_frame_t *
FUNC_FASTCALL(rb_vm_opt_struct_aset)(rb_thread_t *th, rb_control_frame_t *reg_cfp)
{
rb_struct_aset(GET_SELF(), TOPN(0), TOPN(1));
return reg_cfp;
}
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