String Gdb::GetVarType(const String& var)
{
	String type = FastCmd("ptype " + var);
	StringStream ss(type);
	String ln = ss.GetLine();
	const char *s = strchr(ln, '=');
	if(s) {
		s++;
		while(*s == ' ')
			s++;
		return String(s);
	}
	else
		return "";
}

String Gdb::TransformExp(const String& exp)
{
	String newExp;
	int b = exp.Find('[');
	if(b>0) {
		int e = exp.Find(']', b+1);
		if(b>0) {
			// we have a *[*] expression so evaluate the index
			String index = exp.Mid(b+1, e-b-1);
			index = Print(index);
			String tab = exp.Mid(0, b);
			String tabType = GetVarType(tab);
			if(tabType.GetLength()==0) return exp;
			if(tabType.Left(17)=="class std::vector") {
				newExp << "*(" << tab << "._M_impl._M_start+" << index << ")";
				return newExp;
			} else {
				newExp << tab << "[" << index << "]";
				return newExp;
			}
		}
	}
	
	return exp;
}

String Gdb::Print(const String& exp)
{
	String newExp = TransformExp(exp);
	String q = FastCmd("print " + newExp);
	StringStream ss(q);
	String ln = ss.GetLine();
	const char *s = strchr(ln, '=');
	if(s) {
		s++;
		while(*s == ' ')
			s++;
		return DataClean(s);
	}
	else
		return DataClean(ln);
}