getConstant method

dynamic getConstant(String palletName, String constantName)

Get a specific constant value from a pallet

Returns the decoded constant value or null if not found. The value is cached after first decode for performance.

Implementation

dynamic getConstant(final String palletName, final String constantName) {
  if (_decodedCache.containsKey(palletName) &&
      _decodedCache[palletName]!.containsKey(constantName)) {
    return _decodedCache[palletName]![constantName];
  }

  // Find the pallet
  final pallet = registry.palletByName(palletName);
  if (pallet == null) {
    throw MetadataException('Pallet $palletName not found');
  }

  // Find the constant
  final constant = pallet.constants.firstWhere(
    (c) => c.name == constantName,
    orElse: () =>
        throw MetadataException('Constant $constantName not found in pallet $palletName'),
  );

  final decodedValue = _decodeConstant(constant);

  _cacheConstant(palletName, constantName, decodedValue);

  return decodedValue;
}