// Copyright 2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Some preprocessor magic to turn a command-line
// -DUPDATE_ENGINE_VERSION=R35 into a string, and then into an
// NSString.  With -DBLAH=SNORK Doing CONVERT_SYMBOL_TO_NSSTRING(BLAH)
// will cause it to expand to CONVERT_SYMBOL_TO_NSSTRING2(SNORK).
// Then CONVERT_SYMBOL_TO_NSSTRING_2 will stringize SNORK and turn it
// into a quoted string, with the @ to turn it into an NSString.
#define CONVERT_SYMBOL_TO_NSSTRING_2(x) @#x
#define CONVERT_SYMBOL_TO_NSSTRING(x) CONVERT_SYMBOL_TO_NSSTRING_2(x)