double TRI_ToDoubleJson (TRI_json_t const* json, bool& failed) {
TRI_ASSERT(json != nullptr);
failed = false;
switch (json->_type) {
case TRI_JSON_UNUSED:
case TRI_JSON_NULL:
return 0.0;
case TRI_JSON_BOOLEAN:
return (json->_value._boolean ? 1.0 : 0.0);
case TRI_JSON_NUMBER:
return json->_value._number;
case TRI_JSON_STRING:
case TRI_JSON_STRING_REFERENCE:
try {
// try converting string to number
double v = std::stod(json->_value._string.data);
return v;
}
catch (...) {
if (strlen(json->_value._string.data) == 0) {
return 0.0;
}
// conversion failed
}
break;
case TRI_JSON_ARRAY: {
size_t const n = TRI_LengthArrayJson(json);
if (n == 0) {
return 0.0;
}
else if (n == 1) {
return TRI_ToDoubleJson(TRI_LookupArrayJson(json, 0), failed);
}
break;
}
case TRI_JSON_OBJECT:
break;
}
failed = true;
// TODO: must convert to null here
return 0.0;
}
double TRI_ToDoubleJson (TRI_json_t* json) {
switch (json->_type) {
case TRI_JSON_UNUSED:
case TRI_JSON_NULL:
return 0.0;
case TRI_JSON_BOOLEAN:
return (json->_value._boolean ? 1.0 : 0.0);
case TRI_JSON_NUMBER:
return json->_value._number;
case TRI_JSON_STRING:
case TRI_JSON_STRING_REFERENCE:
try {
// try converting string to number
double v = std::stod(json->_value._string.data);
return v;
}
catch (...) {
// conversion failed
}
break;
case TRI_JSON_LIST: {
size_t const n = TRI_LengthListJson(json);
if (n == 0) {
return 0.0;
}
else if (n == 1) {
return TRI_ToDoubleJson(TRI_LookupListJson(json, 0));
}
break;
}
case TRI_JSON_ARRAY:
break;
}
// TODO: must convert to null here
return 0.0;
}
