Diff: zxing_lib/zxing/Exception.h

Revision:

0:7d720671e6dc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/zxing_lib/zxing/Exception.h	Thu Nov 10 20:04:48 2016 +0900
@@ -0,0 +1,51 @@
+// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
+#ifndef __EXCEPTION_H__
+#define __EXCEPTION_H__
+
+/*
+ *  Exception.h
+ *  ZXing
+ *
+ *  Copyright 2010 ZXing authors All rights reserved.
+ *
+ * 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.
+ */
+
+#include <string>
+#include <exception>
+
+namespace zxing {
+
+class Exception : public std::exception {
+private:
+  char const* const message;
+
+public:
+  Exception() throw() : message(0) {}
+  Exception(const char* msg) throw() : message(copy(msg)) {}
+  Exception(Exception const& that) throw() : std::exception(that), message(copy(that.message)) {}
+  ~Exception() throw() {
+    if(message) {
+      deleteMessage();
+    }
+  }
+  char const* what() const throw() {return message ? message : "";}
+
+private:
+  static char const* copy(char const*);
+  void deleteMessage();
+};
+
+}
+
+#endif // __EXCEPTION_H__