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Diffstat (limited to 'java/src/main/java/com/google/protobuf/MutabilityOracle.java')
-rw-r--r-- | java/src/main/java/com/google/protobuf/MutabilityOracle.java | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/java/src/main/java/com/google/protobuf/MutabilityOracle.java b/java/src/main/java/com/google/protobuf/MutabilityOracle.java new file mode 100644 index 00000000..82b723c9 --- /dev/null +++ b/java/src/main/java/com/google/protobuf/MutabilityOracle.java @@ -0,0 +1,48 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protobuf; + +/** + * Verifies that an object is mutable, throwing if not. + */ +interface MutabilityOracle { + static final MutabilityOracle IMMUTABLE = new MutabilityOracle() { + @Override + public void ensureMutable() { + throw new UnsupportedOperationException(); + } + }; + + /** + * Throws an {@link UnsupportedOperationException} if not mutable. + */ + void ensureMutable(); +} |