Class: Debugger::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-debug-base.rb,
ext/ruby_debug/ruby_debug.c

Instance Method Summary collapse

Instance Method Details

#__c_frame_binding ⇒ Object 



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# File 'lib/ruby-debug-base.rb', line 20

alias __c_frame_binding frame_binding

#breakpoint ⇒ Object

Returns a context-specific temporary Breakpoint object.



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# File 'ext/ruby_debug/breakpoint.c', line 263

VALUE
context_breakpoint(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    return debug_context->breakpoint;
}

#dead? ⇒ Boolean

Returns true if context doesn’t represent a live context and is created during post-mortem exception handling.

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2238

static VALUE
context_dead(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    return CTX_FL_TEST(debug_context, CTX_FL_DEAD) ? Qtrue : Qfalse;
}

#frame_args(frame_position = 0) ⇒ Object

Returns frame’s argument parameters



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# File 'ext/ruby_debug/ruby_debug.c', line 1927

static VALUE
context_frame_args(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);

    cfp = GET_CFP;
    if (cfp && cfp->iseq && cfp->iseq->local_table && cfp->iseq->argc)
    {
        int i;
        VALUE list;

        list = rb_ary_new2(cfp->iseq->argc);
        for (i = 0; i < cfp->iseq->argc; i++)
        {
            if (!rb_is_local_id(cfp->iseq->local_table[i])) continue; /* skip flip states */
            rb_ary_push(list, rb_id2str(cfp->iseq->local_table[i]));
        }

        return(list);
    }
    return(rb_ary_new2(0));
}

#frame_binding(frame_position = 0) ⇒ Binding

Returns frame’s binding.

Returns:

  • (Binding) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1795

def frame_binding(frame)
  __c_frame_binding(frame) || hbinding(frame)
end

#frame_class(frame_position) ⇒ Object

Returns the real class of the frame. It could be different than context.frame_self(frame).class

Returns:

  • (Object) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1980

static VALUE
context_frame_class(int argc, VALUE *argv, VALUE self)
{
    VALUE klass;
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;

    if (cfp->iseq == NULL) return(Qnil);
    klass = real_class(cfp->iseq->klass);
    if(TYPE(klass) == T_CLASS || TYPE(klass) == T_MODULE)
        return klass;
    return Qnil;
}

#frame_file(frame_position) ⇒ String

Returns the name of the file.

Returns:

  • (String) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1866

static VALUE
context_frame_file(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;
    while (cfp <= debug_context->start_cfp)
    {
        if (cfp->iseq != NULL)
            return(cfp->iseq->filename);
        cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
    }
    return(Qnil);
}

#frame_method(frame_position = 0) ⇒ Object

Returns the sym of the called method.



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# File 'ext/ruby_debug/ruby_debug.c', line 1822

static VALUE
context_frame_id(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;
    if (cfp->iseq == NULL || cfp->iseq->defined_method_id == 0) return(Qnil);

#if defined HAVE_RB_CONTROL_FRAME_T_METHOD_ID
    return(RUBYVM_CFUNC_FRAME_P(cfp) ? ID2SYM(cfp->method_id) : ID2SYM(cfp->iseq->defined_method_id));
#elif defined HAVE_RB_METHOD_ENTRY_T_CALLED_ID
    return(RUBYVM_CFUNC_FRAME_P(cfp) ? ID2SYM(cfp->me->called_id) : ID2SYM(cfp->iseq->defined_method_id));
#endif
}

#frame_line(frame_position) ⇒ Integer

Returns the line number in the file.

Returns:

  • (Integer) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1847

static VALUE
context_frame_line(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;
    return(INT2FIX(rb_vm_get_sourceline(cfp)));
}

#frame_locals(frame) ⇒ Hash

Returns frame’s local variables.

Returns:

  • (Hash) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1891

static VALUE
context_frame_locals(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    int i;
    rb_control_frame_t *cfp;
    rb_iseq_t *iseq;
    VALUE hash;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;
    iseq = cfp->iseq;
    hash = rb_hash_new();

    if (iseq != NULL && iseq->local_table != NULL)
    {
        /* Note rb_iseq_disasm() is instructive in coming up with this code */
        for (i = 0; i < iseq->local_table_size; i++)
        {
            VALUE str = rb_id2str(iseq->local_table[i]);
            if (str != 0)
                rb_hash_aset(hash, str, *(cfp->dfp - iseq->local_size + i));
        }
    }

    return(hash);
}

#frame_method(frame_position = 0) ⇒ Object

Returns the sym of the called method.



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# File 'ext/ruby_debug/ruby_debug.c', line 1822

static VALUE
context_frame_id(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);
    cfp = GET_CFP;
    if (cfp->iseq == NULL || cfp->iseq->defined_method_id == 0) return(Qnil);

#if defined HAVE_RB_CONTROL_FRAME_T_METHOD_ID
    return(RUBYVM_CFUNC_FRAME_P(cfp) ? ID2SYM(cfp->method_id) : ID2SYM(cfp->iseq->defined_method_id));
#elif defined HAVE_RB_METHOD_ENTRY_T_CALLED_ID
    return(RUBYVM_CFUNC_FRAME_P(cfp) ? ID2SYM(cfp->me->called_id) : ID2SYM(cfp->iseq->defined_method_id));
#endif
}

#frame_self(frame_postion = 0) ⇒ Object

Returns self object of the frame.

Returns:

  • (Object) 


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# File 'ext/ruby_debug/ruby_debug.c', line 1961

static VALUE
context_frame_self(int argc, VALUE *argv, VALUE self)
{
    VALUE frame;
    debug_context_t *debug_context;

    frame = optional_frame_position(argc, argv);
    Data_Get_Struct(self, debug_context_t, debug_context);

    return(GET_CFP->self);
}

#ignored? ⇒ Boolean

Returns the ignore flag for the current context.

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2222

static VALUE
context_ignored(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    return CTX_FL_TEST(debug_context, CTX_FL_IGNORE) ? Qtrue : Qfalse;
}

#interrupt ⇒ Object 



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# File 'lib/ruby-debug-base.rb', line 16

def interrupt
  self.stop_next = 1
end

#jump(line, file) ⇒ Boolean

Returns true if jump to line in filename file was successful.

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2289

static VALUE
context_jump(VALUE self, VALUE line, VALUE file)
{
    debug_context_t *debug_context;
    int i;
    rb_thread_t *th;
    rb_control_frame_t *cfp;
    rb_control_frame_t *cfp_end;
    rb_control_frame_t *cfp_start = NULL;

    Data_Get_Struct(self, debug_context_t, debug_context);
    GetThreadPtr(context_thread_0(debug_context), th);
    line = FIX2INT(line);

    cfp_start = debug_context->cur_cfp;
    cfp_end = RUBY_VM_END_CONTROL_FRAME(th);
    cfp = cfp_start;
    if (cfp_start == NULL)
        return(INT2FIX(2)); /* couldn't find frame; should never happen */
    if ((cfp->pc - cfp->iseq->iseq_encoded) >= (cfp->iseq->iseq_size - 1))
        return(INT2FIX(1)); /* no space for opt_call_c_function hijack */

    /* find target frame to jump to */
    while (RUBY_VM_VALID_CONTROL_FRAME_P(cfp, cfp_end))
    {
        if ((cfp->iseq != NULL) && (rb_str_cmp(file, cfp->iseq->filename) == 0))
        {
            for (i = 0; i < cfp->iseq->line_info_size; i++)
            {
                if (cfp->iseq->line_info_table[i].line_no != line)
                    continue;

                /* hijack the currently running code so that we can change the frame PC */
                debug_context->saved_jump_ins[0] = cfp_start->pc[0];
                debug_context->saved_jump_ins[1] = cfp_start->pc[1];
                cfp_start->pc[0] = bin_opt_call_c_function;
                cfp_start->pc[1] = (VALUE)do_jump;

                debug_context->jump_cfp = cfp;
                debug_context->jump_pc =
                    cfp->iseq->iseq_encoded + cfp->iseq->line_info_table[i].position;

                return(INT2FIX(0)); /* success */
            }
        }

        cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
    }

    return(INT2FIX(3)); /* couldn't find a line and file frame match */
}

#break ⇒ Boolean

Returns true if context is currently running and set flag to break it at next line

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2347

static VALUE
context_pause(VALUE self)
{
    debug_context_t *debug_context;
    rb_thread_t *th;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if (CTX_FL_TEST(debug_context, CTX_FL_DEAD))
        return(Qfalse);

    GetThreadPtr(context_thread_0(debug_context), th);
    if (th == GET_THREAD())
        return(Qfalse);

    debug_context->thread_pause = 1;
    return(Qtrue);
}

#resume ⇒ nil

Resumes the thread from the suspended mode.

Returns:

  • (nil) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2170

static VALUE
context_resume(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if(!CTX_FL_TEST(debug_context, CTX_FL_SUSPEND))
        rb_raise(rb_eRuntimeError, "Thread is not suspended.");
    context_resume_0(debug_context);
    return Qnil;
}

#set_breakpoint(source, pos, condition = nil) ⇒ Object

Sets a context-specific temporary breakpoint, which can be used to implement ‘Run to Cursor’ debugger function. When this breakpoint is reached, it will be cleared out.

source is a name of a file or a class. pos is a line number or a method name if source is a class name. condition is a string which is evaluated to true when this breakpoint is activated.



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# File 'ext/ruby_debug/breakpoint.c', line 285

VALUE
context_set_breakpoint(int argc, VALUE *argv, VALUE self)
{
    VALUE result;
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    result = create_breakpoint_from_args(argc, argv, 0);
    debug_context->breakpoint = result;
    return result;
}

#stack_dec ⇒ Object

Decrements the top of the call stack to the next valid frame, if possible.



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# File 'ext/ruby_debug/ruby_debug.c', line 2051

static VALUE
context_stack_dec(VALUE self)
{
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;
    rb_thread_t *th;

    Data_Get_Struct(self, debug_context_t, debug_context);
    GetThreadPtr(context_thread_0(debug_context), th);
    cfp = debug_context->start_cfp;

    while (cfp >= debug_context->cur_cfp)
    {
        cfp = RUBY_VM_NEXT_CONTROL_FRAME(cfp);
        if (cfp->iseq != NULL && cfp->pc != NULL)
        {
            debug_context->start_cfp = cfp;
            if (GET_THREAD() == th)
                set_cfp(debug_context);
            return(Qtrue);
        }
    }
    return(Qfalse);
}

#stack_inc ⇒ Object

Increments the top of the call stack to the previous valid frame, if possible.



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# File 'ext/ruby_debug/ruby_debug.c', line 2020

static VALUE
context_stack_inc(VALUE self)
{
    debug_context_t *debug_context;
    rb_control_frame_t *cfp;
    rb_thread_t *th;

    Data_Get_Struct(self, debug_context_t, debug_context);
    GetThreadPtr(context_thread_0(debug_context), th);
    cfp = debug_context->start_cfp;

    while (cfp < RUBY_VM_END_CONTROL_FRAME(th))
    {
        cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
        if (cfp->iseq != NULL && cfp->pc != NULL)
        {
            debug_context->start_cfp = cfp;
            if (GET_THREAD() == th)
                set_cfp(debug_context);
            return(Qtrue);
        }
    }
    return(Qfalse);
}

#stack_size ⇒ Object

Returns the size of the context stack.



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# File 'ext/ruby_debug/ruby_debug.c', line 2006

static VALUE
context_stack_size(VALUE self)
{
    debug_context_t *debug_context;
    Data_Get_Struct(self, debug_context_t, debug_context);
    return(INT2FIX(debug_context->cfp_count));
}

#step(steps, force = false) ⇒ Object

Stops the current context after a number of steps are made. force parameter (if true) ensures that the cursor moves from the current line.



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# File 'ext/ruby_debug/ruby_debug.c', line 1684

static VALUE
context_stop_next(int argc, VALUE *argv, VALUE self)
{
    VALUE steps, force;
    debug_context_t *debug_context;

    rb_scan_args(argc, argv, "11", &steps, &force);
    if(FIX2INT(steps) < 0)
        rb_raise(rb_eRuntimeError, "Steps argument can't be negative.");

    Data_Get_Struct(self, debug_context_t, debug_context);
    debug_context->stop_next = FIX2INT(steps);
    if(RTEST(force))
        CTX_FL_SET(debug_context, CTX_FL_FORCE_MOVE);
    else
        CTX_FL_UNSET(debug_context, CTX_FL_FORCE_MOVE);

    return steps;
}

#step_over(steps, frame = nil, force = false) ⇒ Object

Steps over a steps number of times. Make step over operation on frame, by default the current frame. force parameter (if true) ensures that the cursor moves from the current line.



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# File 'ext/ruby_debug/ruby_debug.c', line 1712

static VALUE
context_step_over(int argc, VALUE *argv, VALUE self)
{
    VALUE lines, frame, force;
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if(debug_context->cfp_count == 0)
        rb_raise(rb_eRuntimeError, "No frames collected.");

    rb_scan_args(argc, argv, "12", &lines, &frame, &force);
    debug_context->stop_line = FIX2INT(lines);
    CTX_FL_UNSET(debug_context, CTX_FL_STEPPED);
    if(frame == Qnil)
    {
        debug_context->dest_frame = debug_context->cfp_count;
    }
    else
    {
        if(FIX2INT(frame) < 0 && FIX2INT(frame) >= debug_context->cfp_count)
            rb_raise(rb_eRuntimeError, "Destination frame is out of range.");
        debug_context->dest_frame = debug_context->cfp_count - FIX2INT(frame);
    }
    if(RTEST(force))
        CTX_FL_SET(debug_context, CTX_FL_FORCE_MOVE);
    else
        CTX_FL_UNSET(debug_context, CTX_FL_FORCE_MOVE);

    return Qnil;
}

#stop_frame(frame) ⇒ Object

Stops when a frame with number frame is activated. Implements finish and next commands.



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# File 'ext/ruby_debug/ruby_debug.c', line 1749

static VALUE
context_stop_frame(VALUE self, VALUE frame)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if(FIX2INT(frame) < 0 && FIX2INT(frame) >= debug_context->cfp_count)
        rb_raise(rb_eRuntimeError, "Stop frame is out of range.");
    debug_context->stop_frame = debug_context->cfp_count - FIX2INT(frame);

    return frame;
}

#step(steps, force = false) ⇒ Object

Stops the current context after a number of steps are made. force parameter (if true) ensures that the cursor moves from the current line.



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# File 'ext/ruby_debug/ruby_debug.c', line 1684

static VALUE
context_stop_next(int argc, VALUE *argv, VALUE self)
{
    VALUE steps, force;
    debug_context_t *debug_context;

    rb_scan_args(argc, argv, "11", &steps, &force);
    if(FIX2INT(steps) < 0)
        rb_raise(rb_eRuntimeError, "Steps argument can't be negative.");

    Data_Get_Struct(self, debug_context_t, debug_context);
    debug_context->stop_next = FIX2INT(steps);
    if(RTEST(force))
        CTX_FL_SET(debug_context, CTX_FL_FORCE_MOVE);
    else
        CTX_FL_UNSET(debug_context, CTX_FL_FORCE_MOVE);

    return steps;
}

#stop_reason ⇒ Object

Returns the reason for the stop. It maybe of the following values: :initial, :step, :breakpoint, :catchpoint, :post-mortem



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# File 'ext/ruby_debug/ruby_debug.c', line 2254

static VALUE
context_stop_reason(VALUE self)
{
    debug_context_t *debug_context;
    const char * sym_name;

    Data_Get_Struct(self, debug_context_t, debug_context);

    switch(debug_context->stop_reason)
    {
        case CTX_STOP_STEP:
            sym_name = "step";
            break;
        case CTX_STOP_BREAKPOINT:
            sym_name = "breakpoint";
            break;
        case CTX_STOP_CATCHPOINT:
            sym_name = "catchpoint";
            break;
        case CTX_STOP_NONE:
        default:
            sym_name = "none";
    }
    if(CTX_FL_TEST(debug_context, CTX_FL_DEAD))
        sym_name = "post-mortem";

    return ID2SYM(rb_intern(sym_name));
}

#suspend ⇒ nil

Suspends the thread when it is running.

Returns:

  • (nil) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2137

static VALUE
context_suspend(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if(CTX_FL_TEST(debug_context, CTX_FL_SUSPEND))
        rb_raise(rb_eRuntimeError, "Already suspended.");
    context_suspend_0(debug_context);
    return Qnil;
}

#suspended? ⇒ Boolean

Returns true if the thread is suspended by debugger.

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2155

static VALUE
context_is_suspended(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    return CTX_FL_TEST(debug_context, CTX_FL_SUSPEND) ? Qtrue : Qfalse;
}

#thnum ⇒ Integer

Returns the context’s number.

Returns:

  • (Integer) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2096

static VALUE
context_thnum(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);

    return INT2FIX(debug_context->thnum);
}

#thread ⇒ Object

Returns a thread this context is associated with.



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# File 'ext/ruby_debug/ruby_debug.c', line 2082

static VALUE
context_thread(VALUE self)
{
    debug_context_t *debug_context;
    Data_Get_Struct(self, debug_context_t, debug_context);
    return(id2ref(debug_context->thread_id));
}

#tracing ⇒ Boolean

Returns the tracing flag for the current context.

Returns:

  • (Boolean) 


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# File 'ext/ruby_debug/ruby_debug.c', line 2188

static VALUE
context_tracing(VALUE self)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    return CTX_FL_TEST(debug_context, CTX_FL_TRACING) ? Qtrue : Qfalse;
}

#tracing=(bool) ⇒ Object

Controls the tracing for this context.



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# File 'ext/ruby_debug/ruby_debug.c', line 2203

static VALUE
context_set_tracing(VALUE self, VALUE value)
{
    debug_context_t *debug_context;

    Data_Get_Struct(self, debug_context_t, debug_context);
    if(RTEST(value))
        CTX_FL_SET(debug_context, CTX_FL_TRACING);
    else
        CTX_FL_UNSET(debug_context, CTX_FL_TRACING);
    return value;
}