Protocol Buffer runtime library and 'protoc' plugin

lib/fixnum/int32.dart

 // Copyright (c) 2012, 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.
 
 /**
  * An immutable 32-bit signed integer, in the range [-2^31, 2^31 - 1].
  * Arithmetic operations may overflow in order to maintain this range.
  */
 class int32 implements intx {
 
@@ skipping 125 matching lines @@
    */
   int32.fromInt(int i) : _i = (i & 0x7fffffff) - (i & 0x80000000);
 
   // Convert an [int] or [intx] to an [int32].  Note that an [int64]
   // will be truncated.
   int _convert(other) {
     if (other == null) {
       throw new NullPointerException();
     } else if (other is intx) {
       return other.toInt32()._i;
-    } else if (other is int) {
-      return other;
+    } else if (other is num) {
+      return other.toInt();
     } else {
       throw new Exception("Can't retrieve 32-bit int from $other");
     }
   }
 
   // The +, -, * , &, |, and ^ operaters deal with types as follows:
   //
   // int32 + int => int32
   // int32 + int32 => int32
   // int32 + int64 => int64
@@ skipping 187 matching lines @@
   }
 
   int toInt() => _i;
   int32 toInt32() => this;
   int64 toInt64() => new int64.fromInt(_i);
 
   String toString() => _i.toString();
   String toHexString() => _i.toRadixString(16);
   String toRadixString(int radix) => _i.toRadixString(radix);
 }