Module: BindingOfCaller
- Included in:
- Binding
- Defined in:
- lib/binding_of_caller/mri2.rb,
lib/binding_of_caller/version.rb,
lib/binding_of_caller/rubinius.rb,
lib/binding_of_caller/jruby_interpreted.rb,
ext/binding_of_caller/binding_of_caller.c
Defined Under Namespace
Modules: BindingExtensions Classes: JRubyBindingHolder
Constant Summary collapse
- VERSION =
"0.8.0"
Instance Method Summary collapse
- #callers ⇒ Object
- #frame_count ⇒ Object
- #frame_description ⇒ Object
- #frame_type ⇒ Object
- #of_caller(rb_level) ⇒ Object
Instance Method Details
#callers ⇒ Object
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# File 'ext/binding_of_caller/binding_of_caller.c', line 202
static VALUE
callers(VALUE self)
{
VALUE ary = rb_ary_new();
for (int i = 0; i < FIX2INT(frame_count(self)); i++)
rb_ary_push(ary, binding_of_caller(self, INT2FIX(i)));
return ary;
}
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#frame_count ⇒ Object
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# File 'ext/binding_of_caller/binding_of_caller.c', line 174
static VALUE frame_count(VALUE self)
{
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 i = 1;
while (cfp < limit_cfp) {
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
if (cfp >= limit_cfp)
return INT2FIX(i);
// skip invalid frames
if (!valid_frame_p(cfp, limit_cfp))
cfp = find_valid_frame(cfp, limit_cfp);
if (!cfp)
break;
i++;
}
return INT2FIX(i);
}
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#frame_description ⇒ Object
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# File 'ext/binding_of_caller/binding_of_caller.c', line 168
static VALUE
frame_description(VALUE self)
{
return rb_iv_get(self, "@frame_description");
}
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#frame_type ⇒ Object
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# File 'ext/binding_of_caller/binding_of_caller.c', line 162
static VALUE
frame_type(VALUE self)
{
return rb_iv_get(self, "@frame_type");
}
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#of_caller(rb_level) ⇒ Object
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# File 'ext/binding_of_caller/binding_of_caller.c', line 123
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;
}
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