Protocol Buffer runtime library and 'protoc' plugin

lib/protobuf/runtime/PbException.dart

Index: lib/protobuf/runtime/PbException.dart
diff --git a/lib/protobuf/runtime/PbException.dart b/lib/protobuf/runtime/PbException.dart
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+// 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.
+
+class PbException {
+  String message;
+
+  PbException(this.message) { }
+
+  String toString() => message;
+}
+
+class IllegalStateException extends PbException {
+  IllegalStateException(String message)
+    : super("IllegalStateException: $message") { }
+}
+
+class UninitializedMessageException extends PbException {
+  UninitializedMessageException(List<String> missingFields) :
+      super("Message missing required fields: "
+          "${Strings.join(missingFields, ', ')}");
+}
+
+class PbBufferBusyStateException extends PbException {
+  PbBufferBusyStateException() : super("PbBuffer in busy state.");
+}
+
+class InvalidProtocolBufferException extends PbException {
+
+  InvalidProtocolBufferException(String message) :
+      super("InvalidProtocolBufferException: $message") { }
+
+  static InvalidProtocolBufferException invalidEndTag() {
+    return new InvalidProtocolBufferException(
+        "Protocol message end-group tag did not match expected tag.");
+  }
+
+  static InvalidProtocolBufferException invalidTag() {
+    return new InvalidProtocolBufferException(
+        "Protocol message contained an invalid tag (zero).");
+  }
+
+  static InvalidProtocolBufferException invalidWireType() {
+    return new InvalidProtocolBufferException(
+        "Protocol message tag had invalid wire type.");
+  }
+
+  static InvalidProtocolBufferException malformedVarint() {
+    return new InvalidProtocolBufferException(
+        "CodedBufferReader encountered a malformed varint.");
+  }
+
+  static InvalidProtocolBufferException negativeSize() {
+    return new InvalidProtocolBufferException("""
+CodedBufferReader encountered an embedded string or message
+which claimed to have negative size.
+"""
+    );
+  }
+
+  static InvalidProtocolBufferException recursionLimitExceeded() {
+    return new InvalidProtocolBufferException("""
+Protocol message had too many levels of nesting.  May be malicious.
+Use CodedBufferReader.setRecursionLimit() to increase the depth limit.
+"""
+    );
+  }
+
+  static InvalidProtocolBufferException sizeLimitExceeded() {
+    return new InvalidProtocolBufferException("""
+Protocol message was too large.  May be malicious.
+Use CodedBufferReader.setSizeLimit() to increase the size limit.
+"""
+    );
+  }
+
+  static InvalidProtocolBufferException truncatedMessage() {
+    return new InvalidProtocolBufferException("""
+While parsing a protocol message, the input ended unexpectedly
+in the middle of a field.  This could mean either than the
+input has been truncated or that an embedded message
+misreported its own length.
+"""
+    );
+  }
+}