/
vm_eval.c
1984 lines (1747 loc) · 50.4 KB
/
vm_eval.c
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/**********************************************************************
vm_eval.c -
$Author$
created at: Sat May 24 16:02:32 JST 2008
Copyright (C) 1993-2007 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
static inline VALUE method_missing(VALUE obj, ID id, int argc, const VALUE *argv, int call_status);
static inline VALUE vm_yield_with_cref(rb_thread_t *th, int argc, const VALUE *argv, const NODE *cref);
static inline VALUE vm_yield(rb_thread_t *th, int argc, const VALUE *argv);
static NODE *vm_cref_push(rb_thread_t *th, VALUE klass, int noex, rb_block_t *blockptr);
static VALUE vm_exec(rb_thread_t *th);
static void vm_set_eval_stack(rb_thread_t * th, VALUE iseqval, const NODE *cref, rb_block_t *base_block);
static int vm_collect_local_variables_in_heap(rb_thread_t *th, VALUE *dfp, VALUE ary);
/* vm_backtrace.c */
VALUE rb_vm_backtrace_str_ary(rb_thread_t *th, int lev, int n);
typedef enum call_type {
CALL_PUBLIC,
CALL_FCALL,
CALL_VCALL,
CALL_TYPE_MAX
} call_type;
static VALUE send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope);
static VALUE vm_call0_body(rb_thread_t* th, rb_call_info_t *ci, const VALUE *argv);
static VALUE
vm_call0(rb_thread_t* th, VALUE recv, VALUE id, int argc, const VALUE *argv,
const rb_method_entry_t *me, VALUE defined_class)
{
rb_call_info_t ci_entry, *ci = &ci_entry;
ci->flag = 0;
ci->mid = id;
ci->recv = recv;
ci->defined_class = defined_class;
ci->argc = argc;
ci->me = me;
return vm_call0_body(th, ci, argv);
}
#if OPT_CALL_CFUNC_WITHOUT_FRAME
static VALUE
vm_call0_cfunc(rb_thread_t* th, rb_call_info_t *ci, const VALUE *argv)
{
VALUE val;
RUBY_DTRACE_CMETHOD_ENTRY_HOOK(th, ci->defined_class, ci->mid);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, ci->recv, ci->mid, ci->defined_class, Qnil);
{
rb_control_frame_t *reg_cfp = th->cfp;
const rb_method_entry_t *me = ci->me;
const rb_method_cfunc_t *cfunc = &me->def->body.cfunc;
int len = cfunc->argc;
if (len >= 0) rb_check_arity(ci->argc, len, len);
th->passed_ci = ci;
ci->aux.inc_sp = 0;
VM_PROFILE_UP(2);
val = (*cfunc->invoker)(cfunc->func, ci, argv);
if (reg_cfp == th->cfp) {
if (UNLIKELY(th->passed_ci != ci)) {
rb_bug("vm_call0_cfunc: passed_ci error (ci: %p, passed_ci: %p)", ci, th->passed_ci);
}
th->passed_ci = 0;
}
else {
if (reg_cfp != th->cfp + 1) {
rb_bug("vm_call0_cfunc: cfp consistency error");
}
VM_PROFILE_UP(3);
vm_pop_frame(th);
}
}
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, ci->recv, ci->mid, ci->defined_class, val);
RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, ci->defined_class, ci->mid);
return val;
}
#else
static VALUE
vm_call0_cfunc_with_frame(rb_thread_t* th, rb_call_info_t *ci, const VALUE *argv)
{
VALUE val;
const rb_method_entry_t *me = ci->me;
const rb_method_cfunc_t *cfunc = &me->def->body.cfunc;
int len = cfunc->argc;
VALUE recv = ci->recv;
VALUE defined_class = ci->defined_class;
int argc = ci->argc;
ID mid = ci->mid;
rb_block_t *blockptr = ci->blockptr;
RUBY_DTRACE_CMETHOD_ENTRY_HOOK(th, defined_class, mid);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, mid, defined_class, Qnil);
{
rb_control_frame_t *reg_cfp = th->cfp;
vm_push_frame(th, 0, VM_FRAME_MAGIC_CFUNC, recv, defined_class,
VM_ENVVAL_BLOCK_PTR(blockptr), 0, reg_cfp->sp, 1, me);
if (len >= 0) rb_check_arity(argc, len, len);
VM_PROFILE_UP(2);
val = (*cfunc->invoker)(cfunc->func, recv, argc, argv);
if (UNLIKELY(reg_cfp != th->cfp + 1)) {
rb_bug("vm_call0_cfunc_with_frame: cfp consistency error");
}
VM_PROFILE_UP(3);
vm_pop_frame(th);
}
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, recv, mid, defined_class, val);
RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, defined_class, mid);
return val;
}
static VALUE
vm_call0_cfunc(rb_thread_t* th, rb_call_info_t *ci, const VALUE *argv)
{
return vm_call0_cfunc_with_frame(th, ci, argv);
}
#endif
/* `ci' should point temporal value (on stack value) */
static VALUE
vm_call0_body(rb_thread_t* th, rb_call_info_t *ci, const VALUE *argv)
{
VALUE ret;
if (!ci->me->def) return Qnil;
if (th->passed_block) {
ci->blockptr = (rb_block_t *)th->passed_block;
th->passed_block = 0;
}
else {
ci->blockptr = 0;
}
again:
switch (ci->me->def->type) {
case VM_METHOD_TYPE_ISEQ:
{
rb_control_frame_t *reg_cfp = th->cfp;
int i;
CHECK_VM_STACK_OVERFLOW(reg_cfp, ci->argc + 1);
*reg_cfp->sp++ = ci->recv;
for (i = 0; i < ci->argc; i++) {
*reg_cfp->sp++ = argv[i];
}
vm_call_iseq_setup(th, reg_cfp, ci);
th->cfp->flag |= VM_FRAME_FLAG_FINISH;
return vm_exec(th); /* CHECK_INTS in this function */
}
case VM_METHOD_TYPE_NOTIMPLEMENTED:
case VM_METHOD_TYPE_CFUNC:
ret = vm_call0_cfunc(th, ci, argv);
goto success;
case VM_METHOD_TYPE_ATTRSET:
rb_check_arity(ci->argc, 1, 1);
ret = rb_ivar_set(ci->recv, ci->me->def->body.attr.id, argv[0]);
goto success;
case VM_METHOD_TYPE_IVAR:
rb_check_arity(ci->argc, 0, 0);
ret = rb_attr_get(ci->recv, ci->me->def->body.attr.id);
goto success;
case VM_METHOD_TYPE_BMETHOD:
ret = vm_call_bmethod_body(th, ci, argv);
goto success;
case VM_METHOD_TYPE_ZSUPER:
case VM_METHOD_TYPE_REFINED:
{
if (ci->me->def->type == VM_METHOD_TYPE_REFINED &&
ci->me->def->body.orig_me) {
ci->me = ci->me->def->body.orig_me;
goto again;
}
ci->defined_class = RCLASS_SUPER(ci->defined_class);
if (!ci->defined_class || !(ci->me = rb_method_entry(ci->defined_class, ci->mid, &ci->defined_class))) {
ret = method_missing(ci->recv, ci->mid, ci->argc, argv, NOEX_SUPER);
goto success;
}
RUBY_VM_CHECK_INTS(th);
if (!ci->me->def) return Qnil;
goto again;
}
case VM_METHOD_TYPE_MISSING:
{
VALUE new_args = rb_ary_new4(ci->argc, argv);
RB_GC_GUARD(new_args);
rb_ary_unshift(new_args, ID2SYM(ci->mid));
th->passed_block = ci->blockptr;
return rb_funcall2(ci->recv, idMethodMissing, ci->argc+1, RARRAY_PTR(new_args));
}
case VM_METHOD_TYPE_OPTIMIZED:
switch (ci->me->def->body.optimize_type) {
case OPTIMIZED_METHOD_TYPE_SEND:
ret = send_internal(ci->argc, argv, ci->recv, CALL_FCALL);
goto success;
case OPTIMIZED_METHOD_TYPE_CALL:
{
rb_proc_t *proc;
GetProcPtr(ci->recv, proc);
ret = rb_vm_invoke_proc(th, proc, ci->argc, argv, ci->blockptr);
goto success;
}
default:
rb_bug("vm_call0: unsupported optimized method type (%d)", ci->me->def->body.optimize_type);
}
break;
case VM_METHOD_TYPE_UNDEF:
break;
}
rb_bug("vm_call0: unsupported method type (%d)", ci->me->def->type);
return Qundef;
success:
RUBY_VM_CHECK_INTS(th);
return ret;
}
VALUE
rb_vm_call(rb_thread_t *th, VALUE recv, VALUE id, int argc, const VALUE *argv,
const rb_method_entry_t *me, VALUE defined_class)
{
return vm_call0(th, recv, id, argc, argv, me, defined_class);
}
static inline VALUE
vm_call_super(rb_thread_t *th, int argc, const VALUE *argv)
{
VALUE recv = th->cfp->self;
VALUE klass;
ID id;
rb_method_entry_t *me;
rb_control_frame_t *cfp = th->cfp;
if (cfp->iseq || NIL_P(cfp->klass)) {
rb_bug("vm_call_super: should not be reached");
}
klass = RCLASS_SUPER(cfp->klass);
id = cfp->me->def->original_id;
me = rb_method_entry(klass, id, &klass);
if (!me) {
return method_missing(recv, id, argc, argv, NOEX_SUPER);
}
return vm_call0(th, recv, id, argc, argv, me, klass);
}
VALUE
rb_call_super(int argc, const VALUE *argv)
{
PASS_PASSED_BLOCK();
return vm_call_super(GET_THREAD(), argc, argv);
}
static inline void
stack_check(void)
{
rb_thread_t *th = GET_THREAD();
if (!rb_thread_raised_p(th, RAISED_STACKOVERFLOW) && ruby_stack_check()) {
rb_thread_raised_set(th, RAISED_STACKOVERFLOW);
rb_exc_raise(sysstack_error);
}
}
static inline rb_method_entry_t *
rb_search_method_entry(VALUE recv, ID mid, VALUE *defined_class_ptr);
static inline int rb_method_call_status(rb_thread_t *th, const rb_method_entry_t *me, call_type scope, VALUE self);
#define NOEX_OK NOEX_NOSUPER
/*!
* \internal
* calls the specified method.
*
* This function is called by functions in rb_call* family.
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of method arguments
* \param argv a pointer to an array of method arguments
* \param scope
* \param self self in the caller. Qundef means no self is considered and
* protected methods cannot be called
*
* \note \a self is used in order to controlling access to protected methods.
*/
static inline VALUE
rb_call0(VALUE recv, ID mid, int argc, const VALUE *argv,
call_type scope, VALUE self)
{
VALUE defined_class;
rb_method_entry_t *me =
rb_search_method_entry(recv, mid, &defined_class);
rb_thread_t *th = GET_THREAD();
int call_status = rb_method_call_status(th, me, scope, self);
if (call_status != NOEX_OK) {
return method_missing(recv, mid, argc, argv, call_status);
}
stack_check();
return vm_call0(th, recv, mid, argc, argv, me, defined_class);
}
struct rescue_funcall_args {
VALUE recv;
VALUE sym;
int argc;
VALUE *argv;
};
static VALUE
check_funcall_exec(struct rescue_funcall_args *args)
{
VALUE new_args = rb_ary_new4(args->argc, args->argv);
RB_GC_GUARD(new_args);
rb_ary_unshift(new_args, args->sym);
return rb_funcall2(args->recv, idMethodMissing,
args->argc+1, RARRAY_PTR(new_args));
}
static VALUE
check_funcall_failed(struct rescue_funcall_args *args, VALUE e)
{
if (rb_respond_to(args->recv, SYM2ID(args->sym))) {
rb_exc_raise(e);
}
return Qundef;
}
static int
check_funcall_respond_to(rb_thread_t *th, VALUE klass, VALUE recv, ID mid)
{
VALUE defined_class;
const rb_method_entry_t *me = rb_method_entry(klass, idRespond_to, &defined_class);
if (me && !(me->flag & NOEX_BASIC)) {
const rb_block_t *passed_block = th->passed_block;
VALUE args[2], result;
int arity = rb_method_entry_arity(me);
if (arity > 2)
rb_raise(rb_eArgError, "respond_to? must accept 1 or 2 arguments (requires %d)", arity);
if (arity < 1) arity = 2;
args[0] = ID2SYM(mid);
args[1] = Qtrue;
result = vm_call0(th, recv, idRespond_to, arity, args, me, defined_class);
th->passed_block = passed_block;
if (!RTEST(result)) {
return FALSE;
}
}
return TRUE;
}
static int
check_funcall_callable(rb_thread_t *th, const rb_method_entry_t *me)
{
return rb_method_call_status(th, me, CALL_FCALL, th->cfp->self) == NOEX_OK;
}
static VALUE
check_funcall_missing(rb_thread_t *th, VALUE klass, VALUE recv, ID mid, int argc, VALUE *argv)
{
if (rb_method_basic_definition_p(klass, idMethodMissing)) {
return Qundef;
}
else {
struct rescue_funcall_args args;
th->method_missing_reason = 0;
args.recv = recv;
args.sym = ID2SYM(mid);
args.argc = argc;
args.argv = argv;
return rb_rescue2(check_funcall_exec, (VALUE)&args,
check_funcall_failed, (VALUE)&args,
rb_eNoMethodError, (VALUE)0);
}
}
VALUE
rb_check_funcall(VALUE recv, ID mid, int argc, VALUE *argv)
{
VALUE klass = CLASS_OF(recv);
const rb_method_entry_t *me;
rb_thread_t *th = GET_THREAD();
VALUE defined_class;
if (!check_funcall_respond_to(th, klass, recv, mid))
return Qundef;
me = rb_search_method_entry(recv, mid, &defined_class);
if (check_funcall_callable(th, me) != NOEX_OK) {
return check_funcall_missing(th, klass, recv, mid, argc, argv);
}
stack_check();
return vm_call0(th, recv, mid, argc, argv, me, defined_class);
}
VALUE
rb_check_funcall_with_hook(VALUE recv, ID mid, int argc, VALUE *argv,
rb_check_funcall_hook *hook, VALUE arg)
{
VALUE klass = CLASS_OF(recv);
const rb_method_entry_t *me;
rb_thread_t *th = GET_THREAD();
VALUE defined_class;
if (!check_funcall_respond_to(th, klass, recv, mid))
return Qundef;
me = rb_search_method_entry(recv, mid, &defined_class);
if (check_funcall_callable(th, me) != NOEX_OK) {
(*hook)(FALSE, recv, mid, argc, argv, arg);
return check_funcall_missing(th, klass, recv, mid, argc, argv);
}
stack_check();
(*hook)(TRUE, recv, mid, argc, argv, arg);
return vm_call0(th, recv, mid, argc, argv, me, defined_class);
}
static const char *
rb_type_str(enum ruby_value_type type)
{
#define type_case(t) case t: return #t;
switch (type) {
type_case(T_NONE)
type_case(T_OBJECT)
type_case(T_CLASS)
type_case(T_MODULE)
type_case(T_FLOAT)
type_case(T_STRING)
type_case(T_REGEXP)
type_case(T_ARRAY)
type_case(T_HASH)
type_case(T_STRUCT)
type_case(T_BIGNUM)
type_case(T_FILE)
type_case(T_DATA)
type_case(T_MATCH)
type_case(T_COMPLEX)
type_case(T_RATIONAL)
type_case(T_NIL)
type_case(T_TRUE)
type_case(T_FALSE)
type_case(T_SYMBOL)
type_case(T_FIXNUM)
type_case(T_UNDEF)
type_case(T_NODE)
type_case(T_ICLASS)
type_case(T_ZOMBIE)
default: return NULL;
}
#undef type_case
}
static inline rb_method_entry_t *
rb_search_method_entry(VALUE recv, ID mid, VALUE *defined_class_ptr)
{
VALUE klass = CLASS_OF(recv);
if (!klass) {
VALUE flags, klass;
if (IMMEDIATE_P(recv)) {
rb_raise(rb_eNotImpError,
"method `%s' called on unexpected immediate object (%p)",
rb_id2name(mid), (void *)recv);
}
flags = RBASIC(recv)->flags;
klass = RBASIC(recv)->klass;
if (flags == 0) {
rb_raise(rb_eNotImpError,
"method `%s' called on terminated object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), (void *)recv, flags, klass);
}
else {
int type = BUILTIN_TYPE(recv);
const char *typestr = rb_type_str(type);
if (typestr && T_OBJECT <= type && type < T_NIL)
rb_raise(rb_eNotImpError,
"method `%s' called on hidden %s object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), typestr, (void *)recv, flags, klass);
if (typestr)
rb_raise(rb_eNotImpError,
"method `%s' called on unexpected %s object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), typestr, (void *)recv, flags, klass);
else
rb_raise(rb_eNotImpError,
"method `%s' called on broken T_???" "(0x%02x) object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), type, (void *)recv, flags, klass);
}
}
return rb_method_entry(klass, mid, defined_class_ptr);
}
static inline int
rb_method_call_status(rb_thread_t *th, const rb_method_entry_t *me, call_type scope, VALUE self)
{
VALUE klass;
ID oid;
int noex;
if (UNDEFINED_METHOD_ENTRY_P(me)) {
return scope == CALL_VCALL ? NOEX_VCALL : 0;
}
klass = me->klass;
oid = me->def->original_id;
noex = me->flag;
if (oid != idMethodMissing) {
/* receiver specified form for private method */
if (UNLIKELY(noex)) {
if (((noex & NOEX_MASK) & NOEX_PRIVATE) && scope == CALL_PUBLIC) {
return NOEX_PRIVATE;
}
/* self must be kind of a specified form for protected method */
if (((noex & NOEX_MASK) & NOEX_PROTECTED) && scope == CALL_PUBLIC) {
VALUE defined_class = klass;
if (RB_TYPE_P(defined_class, T_ICLASS)) {
defined_class = RBASIC(defined_class)->klass;
}
if (self == Qundef || !rb_obj_is_kind_of(self, defined_class)) {
return NOEX_PROTECTED;
}
}
if (NOEX_SAFE(noex) > th->safe_level) {
rb_raise(rb_eSecurityError, "calling insecure method: %s",
rb_id2name(me->called_id));
}
}
}
return NOEX_OK;
}
/*!
* \internal
* calls the specified method.
*
* This function is called by functions in rb_call* family.
* \param recv receiver
* \param mid an ID that represents the name of the method
* \param argc the number of method arguments
* \param argv a pointer to an array of method arguments
* \param scope
*/
static inline VALUE
rb_call(VALUE recv, ID mid, int argc, const VALUE *argv, call_type scope)
{
rb_thread_t *th = GET_THREAD();
return rb_call0(recv, mid, argc, argv, scope, th->cfp->self);
}
NORETURN(static void raise_method_missing(rb_thread_t *th, int argc, const VALUE *argv,
VALUE obj, int call_status));
/*
* call-seq:
* obj.method_missing(symbol [, *args] ) -> result
*
* Invoked by Ruby when <i>obj</i> is sent a message it cannot handle.
* <i>symbol</i> is the symbol for the method called, and <i>args</i>
* are any arguments that were passed to it. By default, the interpreter
* raises an error when this method is called. However, it is possible
* to override the method to provide more dynamic behavior.
* If it is decided that a particular method should not be handled, then
* <i>super</i> should be called, so that ancestors can pick up the
* missing method.
* The example below creates
* a class <code>Roman</code>, which responds to methods with names
* consisting of roman numerals, returning the corresponding integer
* values.
*
* class Roman
* def roman_to_int(str)
* # ...
* end
* def method_missing(methId)
* str = methId.id2name
* roman_to_int(str)
* end
* end
*
* r = Roman.new
* r.iv #=> 4
* r.xxiii #=> 23
* r.mm #=> 2000
*/
static VALUE
rb_method_missing(int argc, const VALUE *argv, VALUE obj)
{
rb_thread_t *th = GET_THREAD();
raise_method_missing(th, argc, argv, obj, th->method_missing_reason);
UNREACHABLE;
}
#define NOEX_MISSING 0x80
static VALUE
make_no_method_exception(VALUE exc, const char *format, VALUE obj, int argc, const VALUE *argv)
{
int n = 0;
VALUE mesg;
VALUE args[3];
if (!format) {
format = "undefined method `%s' for %s";
}
mesg = rb_const_get(exc, rb_intern("message"));
if (rb_method_basic_definition_p(CLASS_OF(mesg), '!')) {
args[n++] = rb_name_err_mesg_new(mesg, rb_str_new2(format), obj, argv[0]);
}
else {
args[n++] = rb_funcall(mesg, '!', 3, rb_str_new2(format), obj, argv[0]);
}
args[n++] = argv[0];
if (exc == rb_eNoMethodError) {
args[n++] = rb_ary_new4(argc - 1, argv + 1);
}
return rb_class_new_instance(n, args, exc);
}
static void
raise_method_missing(rb_thread_t *th, int argc, const VALUE *argv, VALUE obj,
int last_call_status)
{
VALUE exc = rb_eNoMethodError;
const char *format = 0;
if (argc == 0 || !SYMBOL_P(argv[0])) {
rb_raise(rb_eArgError, "no id given");
}
stack_check();
if (last_call_status & NOEX_PRIVATE) {
format = "private method `%s' called for %s";
}
else if (last_call_status & NOEX_PROTECTED) {
format = "protected method `%s' called for %s";
}
else if (last_call_status & NOEX_VCALL) {
format = "undefined local variable or method `%s' for %s";
exc = rb_eNameError;
}
else if (last_call_status & NOEX_SUPER) {
format = "super: no superclass method `%s' for %s";
}
{
exc = make_no_method_exception(exc, format, obj, argc, argv);
if (!(last_call_status & NOEX_MISSING)) {
th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
}
rb_exc_raise(exc);
}
}
static inline VALUE
method_missing(VALUE obj, ID id, int argc, const VALUE *argv, int call_status)
{
VALUE *nargv, result, argv_ary = 0;
rb_thread_t *th = GET_THREAD();
const rb_block_t *blockptr = th->passed_block;
th->method_missing_reason = call_status;
th->passed_block = 0;
if (id == idMethodMissing) {
raise_method_missing(th, argc, argv, obj, call_status | NOEX_MISSING);
}
if (argc < 0x100) {
nargv = ALLOCA_N(VALUE, argc + 1);
}
else {
argv_ary = rb_ary_tmp_new(argc + 1);
nargv = RARRAY_PTR(argv_ary);
}
nargv[0] = ID2SYM(id);
MEMCPY(nargv + 1, argv, VALUE, argc);
if (argv_ary) rb_ary_set_len(argv_ary, argc + 1);
if (rb_method_basic_definition_p(CLASS_OF(obj) , idMethodMissing)) {
raise_method_missing(th, argc+1, nargv, obj, call_status | NOEX_MISSING);
}
th->passed_block = blockptr;
result = rb_funcall2(obj, idMethodMissing, argc + 1, nargv);
if (argv_ary) rb_ary_clear(argv_ary);
return result;
}
void
rb_raise_method_missing(rb_thread_t *th, int argc, VALUE *argv,
VALUE obj, int call_status)
{
th->passed_block = 0;
raise_method_missing(th, argc, argv, obj, call_status | NOEX_MISSING);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param args an Array object which contains method arguments
*
* \pre \a args must refer an Array object.
*/
VALUE
rb_apply(VALUE recv, ID mid, VALUE args)
{
int argc;
VALUE *argv, ret;
argc = RARRAY_LENINT(args);
if (argc >= 0x100) {
args = rb_ary_subseq(args, 0, argc);
RBASIC_CLEAR_CLASS(args);
OBJ_FREEZE(args);
ret = rb_call(recv, mid, argc, RARRAY_PTR(args), CALL_FCALL);
RB_GC_GUARD(args);
return ret;
}
argv = ALLOCA_N(VALUE, argc);
MEMCPY(argv, RARRAY_PTR(args), VALUE, argc);
return rb_call(recv, mid, argc, argv, CALL_FCALL);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param n the number of arguments
* \param ... arbitrary number of method arguments
*
* \pre each of arguments after \a n must be a VALUE.
*/
VALUE
rb_funcall(VALUE recv, ID mid, int n, ...)
{
VALUE *argv;
va_list ar;
if (n > 0) {
long i;
va_init_list(ar, n);
argv = ALLOCA_N(VALUE, n);
for (i = 0; i < n; i++) {
argv[i] = va_arg(ar, VALUE);
}
va_end(ar);
}
else {
argv = 0;
}
return rb_call(recv, mid, n, argv, CALL_FCALL);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of arguments
* \param argv pointer to an array of method arguments
*/
VALUE
rb_funcallv(VALUE recv, ID mid, int argc, const VALUE *argv)
{
return rb_call(recv, mid, argc, argv, CALL_FCALL);
}
/*!
* Calls a method.
*
* Same as rb_funcall2 but this function can call only public methods.
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of arguments
* \param argv pointer to an array of method arguments
*/
VALUE
rb_funcallv_public(VALUE recv, ID mid, int argc, const VALUE *argv)
{
return rb_call(recv, mid, argc, argv, CALL_PUBLIC);
}
VALUE
rb_funcall_passing_block(VALUE recv, ID mid, int argc, const VALUE *argv)
{
PASS_PASSED_BLOCK_TH(GET_THREAD());
return rb_call(recv, mid, argc, argv, CALL_PUBLIC);
}
VALUE
rb_funcall_with_block(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE pass_procval)
{
if (!NIL_P(pass_procval)) {
rb_thread_t *th = GET_THREAD();
rb_block_t *block = 0;
rb_proc_t *pass_proc;
GetProcPtr(pass_procval, pass_proc);
block = &pass_proc->block;
th->passed_block = block;
}
return rb_call(recv, mid, argc, argv, CALL_PUBLIC);
}
static VALUE
send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope)
{
ID id;
VALUE vid;
VALUE self;
rb_thread_t *th = GET_THREAD();
if (scope == CALL_PUBLIC) {
self = Qundef;
}
else {
self = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp)->self;
}
if (argc == 0) {
rb_raise(rb_eArgError, "no method name given");
}
vid = *argv++; argc--;
id = rb_check_id(&vid);
if (!id) {
if (rb_method_basic_definition_p(CLASS_OF(recv), idMethodMissing)) {
VALUE exc = make_no_method_exception(rb_eNoMethodError, NULL,
recv, ++argc, --argv);
rb_exc_raise(exc);
}
id = rb_to_id(vid);
}
PASS_PASSED_BLOCK_TH(th);
return rb_call0(recv, id, argc, argv, scope, self);
}
/*
* call-seq:
* foo.send(symbol [, args...]) -> obj
* foo.__send__(symbol [, args...]) -> obj
* foo.send(string [, args...]) -> obj
* foo.__send__(string [, args...]) -> obj
*
* Invokes the method identified by _symbol_, passing it any
* arguments specified. You can use <code>__send__</code> if the name
* +send+ clashes with an existing method in _obj_.
* When the method is identified by a string, the string is converted
* to a symbol.
*
* class Klass
* def hello(*args)
* "Hello " + args.join(' ')
* end
* end
* k = Klass.new
* k.send :hello, "gentle", "readers" #=> "Hello gentle readers"
*/
VALUE
rb_f_send(int argc, VALUE *argv, VALUE recv)
{
return send_internal(argc, argv, recv, CALL_FCALL);
}
/*
* call-seq:
* obj.public_send(symbol [, args...]) -> obj
* obj.public_send(string [, args...]) -> obj
*
* Invokes the method identified by _symbol_, passing it any
* arguments specified. Unlike send, public_send calls public
* methods only.
* When the method is identified by a string, the string is converted
* to a symbol.
*
* 1.public_send(:puts, "hello") # causes NoMethodError
*/
VALUE
rb_f_public_send(int argc, VALUE *argv, VALUE recv)
{
return send_internal(argc, argv, recv, CALL_PUBLIC);
}
/* yield */
static inline VALUE
rb_yield_0(int argc, const VALUE * argv)
{
return vm_yield(GET_THREAD(), argc, argv);
}
VALUE
rb_yield(VALUE val)
{
if (val == Qundef) {
return rb_yield_0(0, 0);
}
else {
return rb_yield_0(1, &val);
}
}
VALUE
rb_yield_values(int n, ...)
{
if (n == 0) {
return rb_yield_0(0, 0);
}
else {
int i;
VALUE *argv;
va_list args;
argv = ALLOCA_N(VALUE, n);
va_init_list(args, n);
for (i=0; i<n; i++) {
argv[i] = va_arg(args, VALUE);
}
va_end(args);
return rb_yield_0(n, argv);
}
}
VALUE
rb_yield_values2(int argc, const VALUE *argv)
{
return rb_yield_0(argc, argv);
}
VALUE
rb_yield_splat(VALUE values)
{
VALUE tmp = rb_check_array_type(values);
volatile VALUE v;
if (NIL_P(tmp)) {
rb_raise(rb_eArgError, "not an array");
}
v = rb_yield_0(RARRAY_LENINT(tmp), RARRAY_PTR(tmp));
return v;
}
static VALUE
loop_i(void)
{
for (;;) {
rb_yield_0(0, 0);
}
return Qnil;
}
static VALUE