static VALUE
binding_dup(VALUE self)
{
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *src, *dst;
GetBindingPtr(self, src);
GetBindingPtr(bindval, dst);
dst->env = src->env;
return bindval;
}
static VALUE
binding_dup(VALUE self, SEL sel)
{
VALUE bindval = binding_alloc(rb_cBinding);
rb_vm_binding_t *src, *dst;
GetBindingPtr(self, src);
GetBindingPtr(bindval, dst);
GC_WB(&dst->self, src->self);
GC_WB(&dst->next, src->next);
GC_WB(&dst->locals, src->locals);
GC_WB(&dst->outer_stack, src->outer_stack);
GC_WB(&dst->block, src->block);
return bindval;
}
VALUE
rb_binding_new(void)
{
rb_thread_t *th = GET_THREAD();
rb_control_frame_t *cfp = vm_get_ruby_level_cfp(th, th->cfp);
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *bind;
GetBindingPtr(bindval, bind);
GC_WB(&bind->env, vm_make_env_object(th, cfp));
return bindval;
}
VALUE
rb_binding_new(void)
{
rb_thread_t *th = GET_THREAD();
rb_control_frame_t *cfp = th_get_ruby_level_cfp(th, th->cfp);
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *bind;
GetBindingPtr(bindval, bind);
bind->env = th_make_env_object(th, cfp);
bind->cref_stack = ruby_cref();
return bindval;
}
VALUE
rb_f_eval(VALUE self, SEL sel, int argc, VALUE *argv)
{
VALUE src, scope, vfile, vline;
const char *file = "(eval)";
int line = 1;
rb_scan_args(argc, argv, "13", &src, &scope, &vfile, &vline);
if (rb_safe_level() >= 4) {
StringValue(src);
if (!NIL_P(scope) && !OBJ_TAINTED(scope)) {
rb_raise(rb_eSecurityError,
"Insecure: can't modify trusted binding");
}
}
else {
SafeStringValue(src);
}
if (argc >= 3) {
StringValue(vfile);
}
if (argc >= 4) {
line = NUM2INT(vline);
}
if (!NIL_P(vfile)) {
file = RSTRING_PTR(vfile);
}
VALUE klass;
switch (TYPE(self)) {
case T_CLASS:
case T_MODULE:
klass = self;
break;
default:
klass = 0;
break;
}
#if 0
if (!NIL_P(scope)) {
rb_vm_binding_t *t = rb_vm_current_binding();
assert(t != NULL);
rb_vm_binding_t *tmp = rb_vm_create_binding(t->self,
t->block, GetBindingPtr(scope), 0, NULL, false);
GC_WB(&tmp->locals, t->locals);
scope = rb_binding_new_from_binding(tmp);
}
#endif
return eval_string(self, klass, src, scope, file, line);
}
static VALUE
eval_string_with_should_push_outer(VALUE self, VALUE klass, VALUE src,
VALUE scope, const char *file, const int line,
bool should_push_outer)
{
rb_vm_binding_t *binding = NULL;
if (scope != Qnil) {
if (!rb_obj_is_kind_of(scope, rb_cBinding)) {
rb_raise(rb_eTypeError, "wrong argument type %s (expected Binding)",
rb_obj_classname(scope));
}
binding = GetBindingPtr(scope);
}
return rb_vm_eval_string(self, klass, src, binding, file, line,
should_push_outer);
}
VALUE
rb_binding_new(void)
{
rb_thread_t *th = GET_THREAD();
rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *bind;
if (cfp == 0) {
rb_raise(rb_eRuntimeError, "Can't create Binding Object on top of Fiber.");
}
GetBindingPtr(bindval, bind);
bind->env = rb_vm_make_env_object(th, cfp);
return bindval;
}
/*
* call-seq:
* prc.binding => binding
*
* Returns the binding associated with <i>prc</i>. Note that
* <code>Kernel#eval</code> accepts either a <code>Proc</code> or a
* <code>Binding</code> object as its second parameter.
*
* def fred(param)
* proc {}
* end
*
* b = fred(99)
* eval("param", b.binding) #=> 99
*/
static VALUE
proc_binding(VALUE self)
{
rb_proc_t *proc;
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *bind;
GetProcPtr(self, proc);
GetBindingPtr(bindval, bind);
if (TYPE(proc->block.iseq) == T_NODE) {
rb_raise(rb_eArgError, "Can't create Binding from C level Proc");
}
bind->env = proc->envval;
return bindval;
}
static void
vm_set_main_stack(rb_thread_t *th, VALUE iseqval)
{
VALUE toplevel_binding = rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING"));
rb_binding_t *bind;
rb_iseq_t *iseq;
rb_env_t *env;
GetBindingPtr(toplevel_binding, bind);
GetEnvPtr(bind->env, env);
th->base_block = &env->block;
vm_set_eval_stack(th, iseqval, 0);
th->base_block = 0;
/* save binding */
GetISeqPtr(iseqval, iseq);
if (bind && iseq->local_size > 0) {
bind->env = rb_vm_make_env_object(th, th->cfp);
}
CHECK_STACK_OVERFLOW(th->cfp, iseq->stack_max);
}
static VALUE binding_of_caller(VALUE self, VALUE rb_level)
{
rb_thread_t *th;
GetThreadPtr(rb_thread_current(), th);
rb_control_frame_t *cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
rb_control_frame_t *limit_cfp = (void *)(th->stack + th->stack_size);
int level = FIX2INT(rb_level);
// attempt to locate the nth parent control frame
for (int i = 0; i < level; i++) {
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
if (cfp >= limit_cfp)
rb_raise(rb_eRuntimeError, "Invalid frame, gone beyond end of stack!");
// skip invalid frames
if (!valid_frame_p(cfp, limit_cfp))
cfp = find_valid_frame(cfp, limit_cfp);
}
VALUE bindval = binding_alloc(rb_cBinding);
rb_binding_t *bind;
if (cfp == 0)
rb_raise(rb_eRuntimeError, "Can't create Binding Object on top of Fiber.");
GetBindingPtr(bindval, bind);
bind->env = rb_vm_make_env_object(th, cfp);
bind->filename = cfp->iseq->filename;
bind->line_no = rb_vm_get_sourceline(cfp);
rb_iv_set(bindval, "@frame_type", frametype_name(cfp->flag));
rb_iv_set(bindval, "@frame_description", cfp->iseq->name);
return bindval;
}
/*RHO static*/ VALUE
eval_string_with_cref(VALUE self, VALUE src, VALUE scope, NODE *cref, const char *file, int line)
{
int state;
VALUE result = Qundef;
VALUE envval;
rb_binding_t *bind = 0;
rb_thread_t *th = GET_THREAD();
rb_env_t *env = NULL;
rb_block_t block;
volatile int parse_in_eval;
volatile int mild_compile_error;
if (file == 0) {
file = rb_sourcefile();
line = rb_sourceline();
}
parse_in_eval = th->parse_in_eval;
mild_compile_error = th->mild_compile_error;
PUSH_TAG();
if ((state = EXEC_TAG()) == 0) {
rb_iseq_t *iseq;
volatile VALUE iseqval;
if (scope != Qnil) {
if (rb_obj_is_kind_of(scope, rb_cBinding)) {
GetBindingPtr(scope, bind);
envval = bind->env;
}
else {
rb_raise(rb_eTypeError,
"wrong argument type %s (expected Binding)",
rb_obj_classname(scope));
}
GetEnvPtr(envval, env);
th->base_block = &env->block;
}
else {
rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
if (cfp != 0) {
block = *RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp);
th->base_block = █
th->base_block->self = self;
th->base_block->iseq = cfp->iseq; /* TODO */
}
else {
rb_raise(rb_eRuntimeError, "Can't eval on top of Fiber or Thread");
}
}
//RHO
if ( TYPE(src) != T_STRING ){
iseqval = src;
}else
//RHO
{
/* make eval iseq */
th->parse_in_eval++;
th->mild_compile_error++;
iseqval = rb_iseq_compile(src, rb_str_new2(file), INT2FIX(line));
th->mild_compile_error--;
th->parse_in_eval--;
}
vm_set_eval_stack(th, iseqval, cref);
th->base_block = 0;
if (0) { /* for debug */
printf("%s\n", RSTRING_PTR(rb_iseq_disasm(iseqval)));
}
/* save new env */
GetISeqPtr(iseqval, iseq);
if (bind && iseq->local_size > 0) {
bind->env = rb_vm_make_env_object(th, th->cfp);
}
/* kick */
CHECK_STACK_OVERFLOW(th->cfp, iseq->stack_max);
result = vm_exec(th);
}
POP_TAG();
th->mild_compile_error = mild_compile_error;
th->parse_in_eval = parse_in_eval;
if (state) {
if (state == TAG_RAISE) {
VALUE errinfo = th->errinfo;
if (strcmp(file, "(eval)") == 0) {
VALUE mesg, errat, bt2;
extern VALUE rb_get_backtrace(VALUE info);
ID id_mesg;
CONST_ID(id_mesg, "mesg");
errat = rb_get_backtrace(errinfo);
mesg = rb_attr_get(errinfo, id_mesg);
if (!NIL_P(errat) && TYPE(errat) == T_ARRAY &&
(bt2 = vm_backtrace(th, -2), RARRAY_LEN(bt2) > 0)) {
if (!NIL_P(mesg) && TYPE(mesg) == T_STRING && !RSTRING_LEN(mesg)) {
if (OBJ_FROZEN(mesg)) {
VALUE m = rb_str_cat(rb_str_dup(RARRAY_PTR(errat)[0]), ": ", 2);
rb_ivar_set(errinfo, id_mesg, rb_str_append(m, mesg));
}
else {
rb_str_update(mesg, 0, 0, rb_str_new2(": "));
rb_str_update(mesg, 0, 0, RARRAY_PTR(errat)[0]);
}
}
RARRAY_PTR(errat)[0] = RARRAY_PTR(bt2)[0];
}
}
rb_exc_raise(errinfo);
}
JUMP_TAG(state);
}
return result;
}
