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ruby/insnhelper.ci

1322 строки
28 KiB
C
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/* -*-c-*- */
/**********************************************************************
insnhelper.ci - instruction helper functions.
$Author$
$Date$
Copyright (C) 2007 Koichi Sasada
**********************************************************************/
/* finish iseq array */
#include "insns.inc"
/* control stack frame */
#ifndef INLINE
#define INLINE inline
#endif
static inline rb_control_frame_t *
vm_push_frame(rb_thread_t *th, rb_iseq_t *iseq, VALUE type,
VALUE self, VALUE specval, VALUE *pc,
VALUE *sp, VALUE *lfp, int local_size)
{
VALUE *dfp;
rb_control_frame_t *cfp;
int i;
/* nil initialize */
for (i=0; i < local_size; i++) {
*sp = Qnil;
sp++;
}
/* set special val */
*sp = GC_GUARDED_PTR(specval);
dfp = sp;
if (lfp == 0) {
lfp = sp;
}
cfp = th->cfp = th->cfp - 1;
cfp->pc = pc;
cfp->sp = sp + 1;
cfp->bp = sp + 1;
cfp->iseq = iseq;
cfp->flag = VM_FRAME_FLAG(type);
cfp->self = self;
cfp->lfp = lfp;
cfp->dfp = dfp;
cfp->proc = 0;
#define COLLECT_PROFILE 0
#if COLLECT_PROFILE
cfp->prof_time_self = clock();
cfp->prof_time_chld = 0;
#endif
if (VMDEBUG == 2) {
SDR();
}
return cfp;
}
static inline void
vm_pop_frame(rb_thread_t *th)
{
#if COLLECT_PROFILE
rb_control_frame_t *cfp = th->cfp;
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
VALUE current_time = clock();
rb_control_frame_t *cfp = th->cfp;
cfp->prof_time_self = current_time - cfp->prof_time_self;
(cfp+1)->prof_time_chld += cfp->prof_time_self;
cfp->iseq->profile.count++;
cfp->iseq->profile.time_cumu = cfp->prof_time_self;
cfp->iseq->profile.time_self = cfp->prof_time_self - cfp->prof_time_chld;
}
else if (0 /* c method? */) {
}
#endif
th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
if (VMDEBUG == 2) {
SDR();
}
}
/* method dispatch */
static inline int
vm_callee_setup_arg(rb_thread_t *th, rb_iseq_t *iseq,
int argc, VALUE *argv, rb_block_t **block)
{
const int m = iseq->argc;
const int orig_argc = argc;
if (iseq->arg_simple) {
/* simple check */
if (argc != m) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)",
argc, m);
}
return 0;
}
else {
VALUE * const dst = argv;
int opt_pc = 0;
/* mandatory */
if (argc < (m + iseq->arg_post_len)) { /* check with post arg */
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)",
argc, m + iseq->arg_post_len);
}
argv += m;
argc -= m;
/* post arguments */
if (iseq->arg_post_len) {
int i;
if (!(orig_argc < iseq->arg_post_start)) {
VALUE *new_argv = ALLOCA_N(VALUE, argc);
MEMCPY(new_argv, argv, VALUE, argc);
argv = new_argv;
}
for (i=0; i<iseq->arg_post_len; i++) {
dst[iseq->arg_post_start + iseq->arg_post_len - (i + 1)] = argv[argc - 1];
argc = argc - 1;
}
}
/* opt arguments */
if (iseq->arg_opts) {
const int opts = iseq->arg_opts - 1 /* no opt */;
if (iseq->arg_rest == -1 && argc > opts) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", orig_argc, m + opts);
}
if (argc > opts) {
argc -= opts;
argv += opts;
opt_pc = iseq->arg_opt_table[opts]; /* no opt */
}
else {
opt_pc = iseq->arg_opt_table[argc];
argc = 0;
}
}
/* rest arguments */
if (iseq->arg_rest != -1) {
dst[iseq->arg_rest] = rb_ary_new4(argc, argv);
}
/* block arguments */
if (block && iseq->arg_block != -1) {
VALUE blockval = Qnil;
rb_block_t * const blockptr = *block;
if (blockptr) {
/* make Proc object */
if (blockptr->proc == 0) {
rb_proc_t *proc;
th->mark_stack_len = orig_argc; /* for GC */
blockval = vm_make_proc(th, th->cfp, blockptr);
th->mark_stack_len = 0;
GetProcPtr(blockval, proc);
*block = &proc->block;
}
else {
blockval = blockptr->proc;
}
}
dst[iseq->arg_block] = blockval; /* Proc or nil */
}
return opt_pc;
}
}
static inline int
caller_setup_args(rb_thread_t *th, rb_control_frame_t *cfp, VALUE flag,
int argc, rb_iseq_t *blockiseq, rb_block_t **block)
{
rb_block_t *blockptr = 0;
if (block) {
if (flag & VM_CALL_ARGS_BLOCKARG_BIT) {
rb_proc_t *po;
VALUE proc;
proc = *(--cfp->sp);
if (proc != Qnil) {
if (!rb_obj_is_proc(proc)) {
VALUE b = rb_check_convert_type(proc, T_DATA, "Proc", "to_proc");
if (NIL_P(b)) {
rb_raise(rb_eTypeError,
"wrong argument type %s (expected Proc)",
rb_obj_classname(proc));
}
proc = b;
}
GetProcPtr(proc, po);
blockptr = &po->block;
RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp)->proc = proc;
*block = blockptr;
}
}
else if (blockiseq) {
blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp);
blockptr->iseq = blockiseq;
blockptr->proc = 0;
*block = blockptr;
}
}
/* expand top of stack? */
if (flag & VM_CALL_ARGS_SPLAT_BIT) {
VALUE ary = *(cfp->sp - 1);
VALUE *ptr;
int i;
VALUE tmp = rb_check_convert_type(ary, T_ARRAY, "Array", "to_splat");
if (NIL_P(tmp)) {
/* do nothing */
}
else {
int len = RARRAY_LEN(tmp);
ptr = RARRAY_PTR(tmp);
cfp->sp -= 1;
CHECK_STACK_OVERFLOW(cfp, len);
for (i = 0; i < len; i++) {
*cfp->sp++ = ptr[i];
}
argc += i-1;
}
}
return argc;
}
static inline VALUE
call_cfunc(VALUE (*func)(), VALUE recv, int len, int argc, const VALUE *argv)
{
/* printf("len: %d, argc: %d\n", len, argc); */
if (len >= 0 && argc != len) {
rb_raise(rb_eArgError, "wrong number of arguments(%d for %d)",
argc, len);
}
switch (len) {
case -2:
return (*func) (recv, rb_ary_new4(argc, argv));
break;
case -1:
return (*func) (argc, argv, recv);
break;
case 0:
return (*func) (recv);
break;
case 1:
return (*func) (recv, argv[0]);
break;
case 2:
return (*func) (recv, argv[0], argv[1]);
break;
case 3:
return (*func) (recv, argv[0], argv[1], argv[2]);
break;
case 4:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3]);
break;
case 5:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4]);
break;
case 6:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]);
break;
case 7:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
break;
case 8:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7]);
break;
case 9:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7], argv[8]);
break;
case 10:
return (*func) (recv, argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7], argv[8], argv[9]);
break;
case 11:
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]);
break;
case 12:
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]);
break;
case 13:
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]);
break;
case 14:
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]);
break;
case 15:
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]);
break;
default:
rb_raise(rb_eArgError, "too many arguments(%d)", len);
break;
}
return Qnil; /* not reached */
}
static inline VALUE
vm_call_cfunc(rb_thread_t *th, rb_control_frame_t *reg_cfp, int num,
ID id, VALUE recv, VALUE klass, NODE *mn, rb_block_t *blockptr)
{
VALUE val;
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, id, klass);
{
rb_control_frame_t *cfp =
vm_push_frame(th, 0, FRAME_MAGIC_CFUNC,
recv, (VALUE) blockptr, 0, reg_cfp->sp, 0, 1);
cfp->method_id = id;
cfp->method_klass = klass;
reg_cfp->sp -= num + 1;
val = call_cfunc(mn->nd_cfnc, recv, mn->nd_argc, num, reg_cfp->sp + 1);
if (reg_cfp != th->cfp + 1) {
rb_bug("cfp consistency error - send");
}
vm_pop_frame(th);
}
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, recv, id, klass);
return val;
}
static inline VALUE
vm_call_bmethod(rb_thread_t *th, ID id, VALUE procval, VALUE recv,
VALUE klass, int argc, VALUE *argv)
{
rb_control_frame_t *cfp = th->cfp;
rb_proc_t *proc;
VALUE val;
/* control block frame */
(cfp-2)->method_id = id;
(cfp-2)->method_klass = klass;
GetProcPtr(procval, proc);
val = vm_invoke_proc(th, proc, recv, argc, argv);
return val;
}
static inline VALUE
vm_method_missing(rb_thread_t *th, ID id, VALUE recv, int num,
rb_block_t *blockptr, int opt)
{
rb_control_frame_t *reg_cfp = th->cfp;
VALUE *argv = STACK_ADDR_FROM_TOP(num + 1);
VALUE val;
argv[0] = ID2SYM(id);
th->method_missing_reason = opt;
th->passed_block = blockptr;
val = rb_funcall2(recv, idMethodMissing, num + 1, argv);
POPN(num + 1);
return val;
}
static inline void
vm_setup_method(rb_thread_t *th, rb_control_frame_t *cfp,
int argc, rb_block_t *blockptr, VALUE flag,
VALUE iseqval, VALUE recv, VALUE klass)
{
rb_iseq_t *iseq;
int opt_pc, i;
VALUE *rsp = cfp->sp - argc;
VALUE *sp;
/* TODO: eliminate it */
GetISeqPtr(iseqval, iseq);
opt_pc = vm_callee_setup_arg(th, iseq, argc, rsp, &blockptr);
sp = rsp + iseq->arg_size;
/* stack overflow check */
CHECK_STACK_OVERFLOW(cfp, iseq->stack_max + 0x10);
if (flag & VM_CALL_TAILCALL_BIT) {
VALUE *p_rsp;
cfp = ++th->cfp; /* pop cf */
p_rsp = th->cfp->sp;
/* copy arguments */
for (i=0; i < (sp - rsp); i++) {
p_rsp[i] = rsp[i];
}
sp -= rsp - p_rsp;
/* clear local variables */
for (i = 0; i < iseq->local_size - iseq->arg_size; i++) {
*sp++ = Qnil;
}
vm_push_frame(th, iseq,
FRAME_MAGIC_METHOD, recv, (VALUE) blockptr,
iseq->iseq_encoded + opt_pc, sp, 0, 0);
}
else {
if (0) printf("local_size: %d, arg_size: %d\n",
iseq->local_size, iseq->arg_size);
/* clear local variables */
for (i = 0; i < iseq->local_size - iseq->arg_size; i++) {
*sp++ = Qnil;
}
vm_push_frame(th, iseq,
FRAME_MAGIC_METHOD, recv, (VALUE) blockptr,
iseq->iseq_encoded + opt_pc, sp, 0, 0);
cfp->sp = rsp - 1 /* recv */;
}
}
static inline VALUE
vm_call_method(rb_thread_t *th, rb_control_frame_t *cfp,
int num, rb_block_t *blockptr, VALUE flag,
ID id, NODE *mn, VALUE recv, VALUE klass)
{
VALUE val;
start_method_dispatch:
/* method missing */
if (mn == 0) {
if (id == idMethodMissing) {
rb_bug("method missing");
}
else {
int stat = 0;
if (flag & VM_CALL_VCALL_BIT) {
stat |= NOEX_VCALL;
}
if (flag & VM_CALL_SUPER_BIT) {
stat |= NOEX_SUPER;
}
val = vm_method_missing(th, id, recv, num, blockptr, stat);
}
}
else if (!(flag & VM_CALL_FCALL_BIT) &&
(mn->nd_noex & NOEX_MASK) & NOEX_PRIVATE) {
int stat = NOEX_PRIVATE;
if (flag & VM_CALL_VCALL_BIT) {
stat |= NOEX_VCALL;
}
val = vm_method_missing(th, id, recv, num, blockptr, stat);
}
else if ((mn->nd_noex & NOEX_MASK) & NOEX_PROTECTED) {
VALUE defined_class = mn->nd_clss;
if (TYPE(defined_class) == T_ICLASS) {
defined_class = RBASIC(defined_class)->klass;
}
if (!rb_obj_is_kind_of(cfp->self, rb_class_real(defined_class))) {
val = vm_method_missing(th, id, recv, num, blockptr, NOEX_PROTECTED);
}
else {
goto normal_method_dispatch;
}
}
/* dispatch method */
else {
NODE *node;
normal_method_dispatch:
node = mn->nd_body;
switch (nd_type(node)) {
case RUBY_VM_METHOD_NODE:{
vm_setup_method(th, cfp, num, blockptr, flag, (VALUE)node->nd_body, recv, klass);
return Qundef;
}
case NODE_CFUNC:{
val = vm_call_cfunc(th, cfp, num, id, recv, klass, node, blockptr);
break;
}
case NODE_ATTRSET:{
val = rb_ivar_set(recv, node->nd_vid, *(cfp->sp - 1));
cfp->sp -= 2;
break;
}
case NODE_IVAR:{
val = rb_ivar_get(recv, node->nd_vid);
cfp->sp -= 1;
break;
}
case NODE_BMETHOD:{
VALUE *argv = cfp->sp - num;
val = vm_call_bmethod(th, id, node->nd_cval, recv, klass, num, argv);
cfp->sp += - num - 1;
break;
}
case NODE_ZSUPER:{
klass = RCLASS(mn->nd_clss)->super;
mn = rb_method_node(klass, id);
if (mn != 0) {
goto normal_method_dispatch;
}
else {
goto start_method_dispatch;
}
}
default:{
printf("node: %s\n", ruby_node_name(nd_type(node)));
rb_bug("eval_invoke_method: unreachable");
/* unreachable */
break;
}
}
}
RUBY_VM_CHECK_INTS();
return val;
}
static inline void
vm_send_optimize(rb_control_frame_t *reg_cfp,
NODE **mn, rb_num_t *flag, rb_num_t *num, ID *id, VALUE klass)
{
if (*mn && nd_type((*mn)->nd_body) == NODE_CFUNC) {
NODE *node = (*mn)->nd_body;
extern VALUE rb_f_funcall(int argc, VALUE *argv, VALUE recv);
extern VALUE rb_f_send(int argc, VALUE *argv, VALUE recv);
if (node->nd_cfnc == rb_f_funcall || node->nd_cfnc == rb_f_send) {
int i;
VALUE sym = TOPN(*num - 1);
*id = SYMBOL_P(sym) ? SYM2ID(sym) : rb_to_id(sym);
/* shift arguments */
for (i=*num-1; i>0; i--) {
TOPN(i) = TOPN(i-1);
}
*mn = rb_method_node(klass, *id);
*num -= 1;
DEC_SP(1);
}
if (node->nd_cfnc == rb_f_funcall) {
*flag |= VM_CALL_FCALL_BIT;
}
}
}
/* yield */
static inline int
block_proc_is_lambda(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, rb_block_t *block,
VALUE self, int argc, VALUE *argv)
{
NODE *ifunc = (NODE *) block->iseq;
VALUE val;
VALUE arg;
int lambda = block_proc_is_lambda(block->proc);
if (lambda) {
arg = rb_ary_new4(argc, argv);
}
else {
if (argc == 1) {
arg = *argv;
}
else if (argc > 1) {
arg = rb_ary_new4(argc, argv);
}
else {
arg = rb_ary_new();
}
}
vm_push_frame(th, 0, FRAME_MAGIC_IFUNC,
self, (VALUE)block->dfp,
0, th->cfp->sp, block->lfp, 1);
val = (*ifunc->nd_cfnc) (arg, ifunc->nd_tval, Qnil);
th->cfp++;
return val;
}
static inline int
vm_yield_setup_args(rb_thread_t *th, rb_iseq_t *iseq,
int argc, VALUE *argv, rb_block_t *blockptr, int lambda)
{
if (0) { /* for debug */
printf(" argc: %d\n", argc);
printf("iseq argc: %d\n", iseq->argc);
printf("iseq opts: %d\n", iseq->arg_opts);
printf("iseq rest: %d\n", iseq->arg_rest);
printf("iseq post: %d\n", iseq->arg_post_len);
printf("iseq blck: %d\n", iseq->arg_block);
printf("iseq smpl: %d\n", iseq->arg_simple);
printf(" lambda: %s\n", lambda ? "true" : "false");
}
if (lambda) {
/* call as method */
return vm_callee_setup_arg(th, iseq, argc, argv, &blockptr);
}
else {
int i;
const int m = iseq->argc;
th->mark_stack_len = argc;
/*
* yield [1, 2]
* => {|a|} => a = [1, 2]
* => {|a, b|} => a, b = [1, 2]
*/
if (iseq->arg_simple != 2 && m > 0 && argc == 1 && TYPE(argv[0]) == T_ARRAY) {
VALUE ary = argv[0];
th->mark_stack_len = argc = RARRAY_LEN(ary);
CHECK_STACK_OVERFLOW(th->cfp, argc);
for (i=0; i<argc; i++) {
argv[i] = RARRAY_PTR(ary)[i];
}
}
for (i=argc; i<m; i++) {
argv[i] = Qnil;
}
if (iseq->arg_rest == -1) {
if (m < argc) {
/*
* yield 1, 2
* => {|a|} # truncate
*/
th->mark_stack_len = argc = m;
}
}
else {
int r = iseq->arg_rest;
if (iseq->arg_post_len) {
int len = iseq->arg_post_len;
int start = iseq->arg_post_start;
int rsize = argc - m;
int psize = rsize;
VALUE ary;
if (rsize < 0) rsize = 0;
if (psize > len) psize = len;
ary = rb_ary_new4(rsize, &argv[r]);
if (0) {
printf(" argc: %d\n", argc);
printf(" len: %d\n", len);
printf("start: %d\n", start);
printf("rsize: %d\n", rsize);
}
/* copy post argument */
for (i=0; i<psize; i++) {
argv[start + psize - i - 1] = rb_ary_pop(ary);
}
for (; i<len; i++) {
argv[start + i] = Qnil;
}
argv[r] = ary;
}
else {
if (argc < r) {
/* yield 1
* => {|a, b, *r|}
*/
for (i=argc; i<r; i++) {
argv[i] = Qnil;
}
argv[r] = rb_ary_new();
}
else {
argv[r] = rb_ary_new4(argc-r, &argv[r]);
}
}
th->mark_stack_len = iseq->arg_size;
}
/* {|&b|} */
if (iseq->arg_block != -1) {
VALUE procval = Qnil;
if (blockptr) {
procval = blockptr->proc;
}
argv[iseq->arg_block] = procval;
th->mark_stack_len = iseq->arg_block + 1;
}
th->mark_stack_len = 0;
return 0;
}
}
static VALUE
vm_invoke_block(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_num_t num, rb_num_t flag)
{
VALUE val;
rb_block_t *block = GET_BLOCK_PTR();
rb_iseq_t *iseq;
int argc = num;
if (GET_ISEQ()->local_iseq->type != ISEQ_TYPE_METHOD || block == 0) {
vm_localjump_error("no block given (yield)", Qnil, 0);
}
iseq = block->iseq;
if (BUILTIN_TYPE(iseq) != T_NODE) {
int opt_pc;
argc = caller_setup_args(th, GET_CFP(), flag, argc, 0, 0);
CHECK_STACK_OVERFLOW(GET_CFP(), iseq->stack_max);
DEC_SP(argc);
opt_pc = vm_yield_setup_args(th, iseq, argc, GET_SP(), 0,
block_proc_is_lambda(block->proc));
argc = iseq->arg_size;
INC_SP(argc);
vm_push_frame(th, iseq,
FRAME_MAGIC_BLOCK, block->self, (VALUE) block->dfp,
iseq->iseq_encoded + opt_pc, GET_SP(), block->lfp,
iseq->local_size - argc);
reg_cfp->sp -= argc;
return Qundef;
}
else {
val = vm_yield_with_cfunc(th, block, block->self, num, STACK_ADDR_FROM_TOP(num));
POPN(num); /* TODO: should put before C/yield? */
return val;
}
}
/* cref */
static NODE *
lfp_get_special_cref(VALUE *lfp)
{
struct RValues *values;
if (((VALUE)(values = (void *)lfp[-1])) != Qnil && values->basic.klass) {
return (NODE *)values->basic.klass;
}
else {
return 0;
}
}
static struct RValues *
new_value(void)
{
struct RValues *val = RVALUES(rb_newobj());
OBJSETUP(val, 0, T_VALUES);
val->v1 = val->v2 = val->v3 = Qnil;
return val;
}
static struct RValues *
lfp_svar_place(rb_thread_t *th, VALUE *lfp)
{
struct RValues *svar;
if (th->local_lfp != lfp) {
svar = (struct RValues *)lfp[-1];
if ((VALUE)svar == Qnil) {
svar = new_value();
lfp[-1] = (VALUE)svar;
}
}
else {
svar = (struct RValues *)th->local_svar;
if ((VALUE)svar == Qnil) {
svar = new_value();
th->local_svar = (VALUE)svar;
}
}
return svar;
}
static VALUE
lfp_svar_get(rb_thread_t *th, VALUE *lfp, VALUE key)
{
struct RValues *svar = lfp_svar_place(th, lfp);
switch (key) {
case 0:
return svar->v1;
case 1:
return svar->v2;
case 2:
return svar->basic.klass;
default: {
VALUE hash = svar->v3;
if (hash == Qnil) {
return Qnil;
}
else {
return rb_hash_lookup(hash, key);
}
}
}
}
static void
lfp_svar_set(rb_thread_t *th, VALUE *lfp, VALUE key, VALUE val)
{
struct RValues *svar = lfp_svar_place(th, lfp);
switch (key) {
case 0:
svar->v1 = val;
return;
case 1:
svar->v2 = val;
return;
case 2:
svar->basic.klass = val;
return;
default: {
VALUE hash = svar->v3;
if (hash == Qnil) {
svar->v3 = hash = rb_hash_new();
}
rb_hash_aset(hash, key, val);
}
}
}
static NODE *
get_cref(rb_iseq_t *iseq, VALUE *lfp)
{
NODE *cref;
if ((cref = lfp_get_special_cref(lfp)) != 0) {
/* */
}
else if ((cref = iseq->cref_stack) != 0) {
/* */
}
else {
rb_bug("get_cref: unreachable");
}
return cref;
}
static inline VALUE
vm_getspecial(rb_thread_t *th, VALUE *lfp, VALUE key, rb_num_t type)
{
VALUE val;
if (type == 0) {
if (FIXNUM_P(key)) key = FIX2INT(key);
val = lfp_svar_get(th, lfp, key);
}
else {
VALUE backref = lfp_svar_get(th, lfp, 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(type >> 1, backref);
}
}
return val;
}
static inline VALUE
vm_get_ev_const(rb_thread_t *th, rb_iseq_t *iseq,
VALUE klass, ID id, int is_defined)
{
VALUE val;
if (klass == Qnil) {
/* in current lexical scope */
NODE *root_cref = get_cref(iseq, th->cfp->lfp);
NODE *cref = root_cref;
while (cref && cref->nd_next) {
klass = cref->nd_clss;
cref = cref->nd_next;
if (klass == 0) {
continue;
}
if (NIL_P(klass)) {
if (is_defined) {
/* TODO: check */
return 1;
}
else {
klass = CLASS_OF(th->cfp->self);
return rb_const_get(klass, id);
}
}
search_continue:
if (RCLASS(klass)->iv_tbl &&
st_lookup(RCLASS(klass)->iv_tbl, id, &val)) {
if (val == Qundef) {
rb_autoload_load(klass, id);
goto search_continue;
}
else {
if (is_defined) {
return 1;
}
else {
return val;
}
}
}
}
klass = root_cref->nd_clss;
if (is_defined) {
return rb_const_defined(klass, id);
}
else {
return rb_const_get(klass, id);
}
}
else {
switch (TYPE(klass)) {
case T_CLASS:
case T_MODULE:
break;
default:
rb_raise(rb_eTypeError, "%s is not a class/module",
RSTRING_PTR(rb_obj_as_string(klass)));
}
if (is_defined) {
return rb_const_defined(klass, id);
}
else {
return rb_const_get(klass, id);
}
}
}
static inline VALUE
vm_get_cvar_base(rb_thread_t *th, rb_iseq_t *iseq)
{
NODE *cref = get_cref(iseq, th->cfp->lfp);
VALUE klass = Qnil;
if (cref) {
klass = cref->nd_clss;
if (!cref->nd_next) {
rb_warn("class variable access from toplevel");
}
}
if (NIL_P(klass)) {
rb_raise(rb_eTypeError, "no class variables available");
}
return klass;
}
static inline void
vm_define_method(rb_thread_t *th, VALUE obj,
ID id, rb_iseq_t *miseq, rb_num_t is_singleton, NODE *cref)
{
NODE *newbody;
int noex = cref->nd_visi;
VALUE klass = cref->nd_clss;
if (is_singleton) {
if (FIXNUM_P(obj) || SYMBOL_P(obj)) {
rb_raise(rb_eTypeError,
"can't define singleton method \"%s\" for %s",
rb_id2name(id), rb_obj_classname(obj));
}
if (OBJ_FROZEN(obj)) {
rb_error_frozen("object");
}
klass = rb_singleton_class(obj);
noex = NOEX_PUBLIC;
}
/* dup */
COPY_CREF(miseq->cref_stack, cref);
miseq->klass = klass;
miseq->defined_method_id = id;
newbody = NEW_NODE(RUBY_VM_METHOD_NODE, 0, miseq->self, 0);
rb_add_method(klass, id, newbody, noex);
if (!is_singleton && noex == NOEX_MODFUNC) {
rb_add_method(rb_singleton_class(klass), id, newbody, NOEX_PUBLIC);
}
INC_VM_STATE_VERSION();
}
static inline NODE *
vm_method_search(VALUE id, VALUE klass, IC ic)
{
NODE *mn;
#if OPT_INLINE_METHOD_CACHE
{
if (LIKELY(klass == ic->ic_klass) &&
LIKELY(GET_VM_STATE_VERSION() == ic->ic_vmstat)) {
mn = ic->ic_method;
}
else {
mn = rb_method_node(klass, id);
ic->ic_klass = klass;
ic->ic_method = mn;
ic->ic_vmstat = GET_VM_STATE_VERSION();
}
}
#else
mn = rb_method_node(klass, id);
#endif
return mn;
}
static inline VALUE
vm_search_normal_super_klass(VALUE klass, VALUE recv)
{
if (BUILTIN_TYPE(klass) == T_CLASS) {
klass = RCLASS(klass)->super;
}
else if (BUILTIN_TYPE(klass) == T_MODULE) {
VALUE k = CLASS_OF(recv);
while (k) {
if (BUILTIN_TYPE(k) == T_ICLASS && RBASIC(k)->klass == klass) {
klass = RCLASS(k)->super;
break;
}
k = RCLASS(k)->super;
}
}
return klass;
}
static void
vm_search_super_klass(rb_control_frame_t *reg_cfp, rb_iseq_t *ip, VALUE recv, VALUE sigval, ID *idp, VALUE *klassp)
{
ID id;
VALUE klass;
while (ip && !ip->klass) {
ip = ip->parent_iseq;
}
if (ip == 0) {
rb_raise(rb_eNoMethodError, "super called outside of method");
}
id = ip->defined_method_id;
if (ip != ip->local_iseq) {
/* defined by Module#define_method() */
rb_control_frame_t *lcfp = GET_CFP();
while (lcfp->iseq != ip) {
VALUE *tdfp = GET_PREV_DFP(lcfp->dfp);
while (1) {
lcfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(lcfp);
if (lcfp->dfp == tdfp) {
break;
}
}
}
id = lcfp->method_id;
klass = vm_search_normal_super_klass(lcfp->method_klass, recv);
if (sigval == Qfalse) {
/* zsuper */
rb_raise(rb_eRuntimeError, "implicit argument passing of super from method defined by define_method() is not supported. Specify all arguments explicitly.");
}
}
else {
klass = vm_search_normal_super_klass(ip->klass, recv);
}
*idp = id;
*klassp = klass;
}
static VALUE
vm_throw(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_num_t throw_state, VALUE throwobj)
{
rb_num_t state = throw_state & 0xff;
rb_num_t flag = throw_state & 0x8000;
rb_num_t level = throw_state >> 16;
if (state != 0) {
VALUE *pt;
int i;
if (flag != 0) {
if (throw_state & 0x4000) {
pt = (void *)1;
}
else {
pt = 0;
}
}
else {
if (state == TAG_BREAK) {
rb_control_frame_t *cfp = GET_CFP();
VALUE *dfp = GET_DFP();
int is_orphan = 1;
rb_iseq_t *base_iseq = GET_ISEQ();
search_parent:
if (cfp->iseq->type != ISEQ_TYPE_BLOCK) {
dfp = GC_GUARDED_PTR_REF((VALUE *) *dfp);
base_iseq = base_iseq->parent_iseq;
while ((VALUE *) cfp < th->stack + th->stack_size) {
if (cfp->dfp == dfp) {
goto search_parent;
}
cfp++;
}
rb_bug("VM (throw): can't find break base.");
}
if (VM_FRAME_TYPE(cfp) == FRAME_MAGIC_LAMBDA) {
/* lambda{... break ...} */
is_orphan = 0;
pt = dfp;
}
else {
dfp = GC_GUARDED_PTR_REF((VALUE *) *dfp);
while ((VALUE *)cfp < th->stack + th->stack_size) {
if (cfp->dfp == dfp) {
VALUE epc = 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 = dfp;
is_orphan = 0;
break;
}
cfp++;
}
}
if (is_orphan) {
vm_localjump_error("break from proc-closure", throwobj, TAG_BREAK);
}
}
else if (state == TAG_RETRY) {
pt = GC_GUARDED_PTR_REF((VALUE *) * GET_DFP());
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 *dfp = GET_DFP();
int is_orphan = 1;
/**
* check orphan:
*/
while ((VALUE *) cfp < th->stack + th->stack_size) {
if (GET_DFP() == dfp) {
if (VM_FRAME_TYPE(cfp) == FRAME_MAGIC_LAMBDA) {
/* in lambda */
is_orphan = 0;
break;
}
}
cfp++;
if (GET_LFP() == cfp->lfp &&
cfp->iseq->type == ISEQ_TYPE_METHOD) {
is_orphan = 0;
break;
}
}
if (is_orphan) {
vm_localjump_error("unexpected return", throwobj, TAG_RETURN);
}
pt = GET_LFP();
}
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 = FIX2INT(rb_ivar_get(err, idThrowState));
}
return err;
}
}
static void
call_end_proc(VALUE data)
{
rb_proc_call(data, rb_ary_new2(0));
}
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