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PrettyPrinter: Check if match is valid before accessing group (#3920)

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Finkman 2023-01-14 16:07:49 +01:00 committed by GitHub
parent 4c6cde72e5
commit da6b908c4f
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1 changed files with 14 additions and 14 deletions
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28
tools/gdb_pretty_printer/nlohmann-json.py
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@ -14,19 +14,19 @@ class JsonValuePrinter:
return self.val
def json_lookup_function(val):
m = ns_pattern.fullmatch(val.type.strip_typedefs().name)
name = m.group('name')
if name and name.startswith('basic_json<') and name.endswith('>'):
m = ns_pattern.fullmatch(str(val['m_type']))
t = m.group('name')
if t and t.startswith('detail::value_t::'):
try:
union_val = val['m_value'][t.removeprefix('detail::value_t::')]
if union_val.type.code == gdb.TYPE_CODE_PTR:
return gdb.default_visualizer(union_val.dereference())
else:
return JsonValuePrinter(union_val)
except Exception:
return JsonValuePrinter(val['m_type'])
if m := ns_pattern.fullmatch(str(val.type.strip_typedefs().name)):
name = m.group('name')
if name and name.startswith('basic_json<') and name.endswith('>'):
m = ns_pattern.fullmatch(str(val['m_type']))
t = m.group('name')
if t and t.startswith('detail::value_t::'):
try:
union_val = val['m_value'][t.removeprefix('detail::value_t::')]
if union_val.type.code == gdb.TYPE_CODE_PTR:
return gdb.default_visualizer(union_val.dereference())
else:
return JsonValuePrinter(union_val)
except Exception:
return JsonValuePrinter(val['m_type'])
gdb.pretty_printers.append(json_lookup_function)