#help_index "Debugging"

ClassStruct *DbgFindFun(Ltf *l,I8 line_offset=0)
{
  I1 st[256],*filename=l->filename.name;
  I8 line=l->cur_entry->y+1+line_offset;
  U8 i;
  SysHashEntry *temph;
  SysHashTable *h=Fs->hash_table;
  ClassStruct *tempc;
  DbgInfo *tempd;
  while (h) {
    for (i=0;i<=h->mask;i++) {
      temph=h->body[i];
      while (temph) {
	if (temph->type&HTT_FUNCTION) {
	  tempc=temph;
	  if (tempd=tempc->debug) {
	    StrCpy(st,tempc->source_link);
	    RemoveFirstSeg(st,":");
	    RemoveLastSeg(st,",");
	    if (!StrCmp(st,filename)) {
	      if (line>=tempd->min_line && line<=tempd->max_line)
		return tempc;
	    }
	  }
	}
	temph=temph->next;
      }
    }
    h=h->next;
  }
  return NULL;
}

void WatchLocals()
{
  BoolU4 old_preempt=Preempt(OFF);
  TssStruct *tss=Fs->parent_tss,*dbg_tss=tss->dbg_tss;
  Ltf *swap,*l;
  ClassStruct *tempc,*tempc1;
  U8 j,sc,ch;
  void **rbp,**ptr;
  I8 offset,ip;

  Fs->double_buf_cur_ltf=LtfNew;
  while (TRUE) {
    if (!(dbg_tss=tss->dbg_tss))
      Exit;
    if (ScanKey(&ch,&sc,TRUE)) {
      j=Jiffies+JIFFY_FREQ*5;
      LtfDel(Fs->double_buf_cur_ltf);
      Fs->double_buf_cur_ltf=NULL;
      do {
	if (ch==CH_CTRLQ || ch==CH_ESC)
	  Exit;
	if (ScanKey(&ch,&sc,TRUE))
	  j=Jiffies+JIFFY_FREQ*5;
	WinSync;
      } while (Jiffies<j);
      Fs->double_buf_cur_ltf=LtfNew;
    } else {
      LtfDel(Fs->cur_ltf);
      Fs->cur_ltf=LtfNew;
      if (l=dbg_tss->cur_ltf) {
	if (tempc=DbgFindFun(l,0)) {
	  PutS("$$WW,1$$");
	  rbp=tss->rbp;
	  ip=tss->rip;
	  do {
	    tempc1=FindPSect(ip,&offset);
break; //TODO: load reg variables for higher level subroutines
	    if (tempc==tempc1)
	      break;
	    else {
	      if (rbp>=*rbp)
		break;
	      ptr=rbp+8;
	      rbp=*rbp;
	      ip=*ptr;
	      if (!CheckOnStk(rbp,tss))
		break;
	    }
	  } while (TRUE);
	  if (tempc==tempc1)
	    FunRep(tempc->str,rbp,2,tss);
	}
      }
      swap=Fs->double_buf_cur_ltf;
      Fs->double_buf_cur_ltf=Fs->cur_ltf;
      Fs->cur_ltf=swap;
      WinSync;
    }
  }
  LtfDel(Fs->double_buf_cur_ltf);
  Fs->double_buf_cur_ltf=NULL;
  Preempt(old_preempt);
}


public void IDE(I1 *filename)
//Spawns a child process which has
//access to parents symbols. Can be used
//to debug parent.
{
  TssStruct *tss;
  I1 *fn1=DefaultExtension(filename,"CPZ"),
     *fn2=AbsoluteFileName(fn1);

  if (PopUpCancelOk("$$BK,1$$$$FG,RED$$LoseThos IDE Debugger$$FG$$$$BK,0$$\r\n"
	  "Do not use this on files that run when included.\r\n"
	  "\r\nTo use:\r\n"
	  "  1) Set a break-point in the editor window.\r\n"
	  "  2) Run program from command line.\r\n\r\n"
	  "$$FG,GREEN$$F5$$FG$$\t\tGo\r\n"
	  "$$FG,GREEN$$SHIFT-F5$$FG$$\tStep\r\n"
	  "$$FG,GREEN$$F9$$FG$$\t\tToggle Break Point\r\n"
	  "$$FG,GREEN$$SHIFT-F9$$FG$$\tClear All Break Points\r\n"
      )) {
    if (!Fs->dbg_tss) {
      Fs->win_top=2;
      Fs->win_bottom=TEXT_ROWS-2;
      Fs->win_left=1;
      Fs->win_right=TEXT_COLS>>1-1;

      tss=Spawn(&UserCmdLine,"Debug Task",Fs);
      WaitTskIdle(tss);
      tss->win_top=12;
      tss->win_bottom=TEXT_ROWS-2;
      tss->win_left=TEXT_COLS>>1+1;
      tss->win_right=TEXT_COLS-2;
      XTalk(tss,"Edit(\"%s\");\r",fn2);

      Fs->dbg_tss=tss;

      tss=Spawn(&UserCmdLine,"Watch Task",Fs);
      WaitTskIdle(tss);
      tss->win_top=2;
      tss->win_bottom=10;
      tss->win_left=TEXT_COLS>>1+1;
      tss->win_right=TEXT_COLS-2;
      XTalk(tss,"WatchLocals;\r");

      ExecuteFile(fn2);
    }
    Free(fn1);
    Free(fn2);
  }
}


#help_index "Debugging/Breakpoints"
I8 IDELineAdd(DbgInfo *tempd,I8 line)
{
  I8 max=tempd->max_line-tempd->min_line;
  line-=tempd->min_line;
  if (line<0)
    return IDELineAdd(tempd,tempd->min_line);
  while (!tempd->body[line] && line<max)
    line++;
  return tempd->body[line];
}

I8 IDERIPLineNum(Ltf *l,void *rip)
{
  I1 st[256],*filename=l->filename.name;
  I8 line;
  SysHashEntry *temph;
  SysHashTable *h=Fs->hash_table;
  ClassStruct *tempc;
  I8 i;
  DbgInfo *tempd;
  while (h) {
    for (i=0;i<=h->mask;i++) {
      temph=h->body[i];
      while (temph) {
	if (temph->type&HTT_FUNCTION) {
	  tempc=temph;
	  if (tempd=tempc->debug) {
	    StrCpy(st,tempc->source_link);
	    RemoveFirstSeg(st,":");
	    RemoveLastSeg(st,",");
	    if (!StrCmp(st,filename)) {
	      for (line=tempd->min_line;line<=tempd->max_line;line++)
		if (rip>=IDELineAdd(tempd,line) &&
		    rip<IDELineAdd(tempd,line+1))
		  return line;
	    }
	  }
	}
	temph=temph->next;
      }
    }
    h=h->next;
  }
  return -1;
}

void IDESetStepRange(Ltf *l)
{
  I1 st[256],*filename=l->filename.name;
  I8 line=l->cur_entry->y+1;
  SysHashEntry *temph;
  SysHashTable *h=Fs->hash_table;
  ClassStruct *tempc;
  I8 i;
  DbgInfo *tempd;
  while (h) {
    for (i=0;i<=h->mask;i++) {
      temph=h->body[i];
      while (temph) {
	if (temph->type&HTT_FUNCTION) {
	  tempc=temph;
	  if (tempd=tempc->debug) {
	    StrCpy(st,tempc->source_link);
	    RemoveFirstSeg(st,":");
	    RemoveLastSeg(st,",");
	    if (!StrCmp(st,filename)) {
	      if (line>=tempd->min_line && line<=tempd->max_line) {
		Fs->user_data0=IDELineAdd(tempd,line);
		Fs->user_data1=IDELineAdd(tempd,line+1);
		return;
	      }
	    }
	  }
	}
	temph=temph->next;
      }
    }
    h=h->next;
  }
}

void IDEToggleBpt(Ltf *l)
{ //F9
  I1 st[256],*filename=l->filename.name;
  I8 line=l->cur_entry->y+1;
  SysHashEntry *temph;
  SysHashTable *h=Fs->hash_table;
  ClassStruct *tempc;
  I8 i,a;
  DbgInfo *tempd;
  LtfEntry *ll;
  while (h) {
    for (i=0;i<=h->mask;i++) {
      temph=h->body[i];
      while (temph) {
	if (temph->type&HTT_FUNCTION) {
	  tempc=temph;
	  if (tempd=tempc->debug) {
	    StrCpy(st,tempc->source_link);
	    RemoveFirstSeg(st,":");
	    RemoveLastSeg(st,",");
	    if (!StrCmp(st,filename)) {
	      if (line>=tempd->min_line && line<=tempd->max_line) {
		a=IDELineAdd(tempd,line);
		ll=l->cur_entry;
		while (ll->last->btype!=LTFT_CR &&
		       ll->last->btype!=LTFT_SOFT_CR &&
		       ll->last!=l)
		  ll=ll->last;
		l->cur_entry=ll;
		l->cur_data_col=ll->min_col;
		if (!RBpt(Fs->parent_tss,a)) {
		  SBpt(Fs->parent_tss,a,SBPTF_BPT);
		  Auto("$$BP$$");
		} else {
		  if (ll->btype==LTFT_BPT) {
		    l->cur_entry=ll->next;
		    l->cur_data_col=l->cur_entry->min_col;
		    LtfDelEntry(l,ll);
		  }
		}
		LtfGotoLineNum(l,line);
		return;
	      }
	    }
	  }
	}
	temph=temph->next;
      }
    }
    h=h->next;
  }
}

void IDEClearAllBpts(Ltf *l)
{ //SHIFT-F9
  LtfEntry *ll,*ll2;
  CBpt(Fs->parent_tss);
  ll=l->dummy.next;
  while (ll!=l) {
    ll2=ll->next;
    if (ll->btype==LTFT_BPT) {
      if (l->cur_entry==ll) {
	l->cur_entry=ll->next;
	l->cur_data_col=l->cur_entry->min_col;
      }
      LtfDelEntry(l,ll);
    }
    ll=ll2;
  }
}

void IDEGo()  //Continue after breakpoint
{ //F5
  TssStruct *tss=Fs->parent_tss;
  void *rip=&tss->rip;
  if (!Btr(&tss->task_flags,TSSf_DISABLE_BPTS)) {
    *rip-=1;
    if (!DBpt(tss,*rip))
      *rip+=1;
  }
  Fs->user_data0=0;
  Fs->user_data1=0;
  Btr(&tss->rflags,8);
  Btr(&tss->task_flags,TSSf_SUSPENDED);
}

void IDEStep(Ltf *l)  //Single step
{ //SHIFT-F5
  TssStruct *tss=Fs->parent_tss;
  void *rip=&tss->rip;
  I8 line=IDERIPLineNum(l,*rip);
  if (!Bts(&tss->task_flags,TSSf_DISABLE_BPTS)) {
    *rip-=1;
    if (!DBpt(tss,*rip))
      *rip+=1;
  }
  if (line>0) {
    LtfGotoLineNum(l,line);
    IDESetStepRange(l);
  } else {
    Fs->user_data0=0;
    Fs->user_data1=0;
  }
  Bts(&tss->rflags,8);
  Btr(&tss->task_flags,TSSf_SUSPENDED);
}

void IDESetLineNum(Ltf *l)
{ //SHIFT-F8
  TssStruct *tss=Fs->parent_tss;
  I8 line=IDERIPLineNum(l,tss->rip);
  if (line>0)
    LtfGotoLineNum(l,line);
}

void IDEResumeDbg()
{
  TssStruct *dbg=Fs->dbg_tss;
  I8 u0=dbg->user_data0,u1=dbg->user_data1;
  if (!u0 || (Fs->rip<u0 || Fs->rip>u1) ||
      Fs->rip==u1 && u1!=u0) {
    WinToTop(dbg);
    QueueMsg(dbg,NULL,MSG_KEY_DOWN,0,SCF_SHIFT+SC_F8,0);
  } else
    Btr(&Fs->task_flags,TSSf_SUSPENDED);
}

ext[EXT_RESUME_DBG]=&IDEResumeDbg;

#help_index ""