| import gdb |
| import re |
| |
| class JsonValuePrinter: |
| "Print a json-value" |
| |
| def __init__(self, val): |
| self.val = val |
| |
| def to_string(self): |
| if self.val.type.strip_typedefs().code == gdb.TYPE_CODE_FLT: |
| return ("%.6f" % float(self.val)).rstrip("0") |
| return self.val |
| |
| def json_lookup_function(val): |
| if re.search("^nlohmann::basic_json<.*>$", val.type.strip_typedefs().name): |
| t = str(val['m_type']) |
| if t.startswith("nlohmann::detail::value_t::"): |
| try: |
| union_val = val['m_value'][t[27:]] |
| if union_val.type.code == gdb.TYPE_CODE_PTR: |
| return gdb.default_visualizer(union_val.dereference()) |
| else: |
| return JsonValuePrinter(union_val) |
| except: |
| return JsonValuePrinter(val['m_type']) |
| |
| gdb.pretty_printers.append(json_lookup_function) |
