sdk/lib/_internal/compiler/implementation/runtime_data.dart

// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// Contains encoding, decoding and detection functionality for the
/// representation of program data at runtime.
///
/// This library is shared between the compiler and the runtime system.
library dart2js.runtime_data;


String encodeTypedefFieldDescriptor(int typeIndex) {
  return ":$typeIndex;";
}

bool isTypedefDescriptor(String descriptor) {
  return descriptor.startsWith(':');
}

int getTypeFromTypedef(String descriptor) {
  return int.parse(descriptor.substring(1, descriptor.length - 1));
}