From b45037e334ca336498217d4f54756c319c074d7b Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Sat, 12 Apr 2008 01:40:49 -0400
Subject: Migrated over both code and build environment from was-v3.0 branch.

---
 flags.h | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 flags.h

(limited to 'flags.h')

diff --git a/flags.h b/flags.h
new file mode 100644
index 00000000..5ae8b60f
--- /dev/null
+++ b/flags.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2003-2007, John Wiegley.  All rights reserved.
+ *
+ * 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 New Artisans LLC 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.
+ */
+
+#ifndef _FLAGS_H
+#define _FLAGS_H
+
+template <typename T = boost::uint_least8_t>
+class supports_flags
+{
+public:
+  typedef T flags_t;
+
+protected:
+  flags_t flags_;
+
+public:
+  supports_flags() : flags_(0) {}
+  supports_flags(const flags_t arg) : flags_(arg) {}
+
+  flags_t flags() const {
+    return flags_;
+  }
+  bool has_flags(const flags_t arg) const {
+    return flags_ & arg;
+  }
+
+  void set_flags(const flags_t arg) {
+    flags_ = arg;
+  }
+  void clear_flags() {
+    flags_ = 0;
+  }
+  void add_flags(const flags_t arg) {
+    flags_ |= arg;
+  }
+  void drop_flags(const flags_t arg) {
+    flags_ &= ~arg;
+  }
+};
+
+template <typename T = boost::uint_least8_t>
+class delegates_flags : public boost::noncopyable
+{
+public:
+  typedef T flags_t;
+
+protected:
+  supports_flags<T>& flags_;
+
+public:
+  delegates_flags() : flags_() {}
+  delegates_flags(supports_flags<T>& arg) : flags_(arg) {}
+
+  flags_t flags() const {
+    return flags_.flags();
+  }
+  bool has_flags(const flags_t arg) const {
+    return flags_.has_flags(arg);
+  }
+
+  void set_flags(const flags_t arg) {
+    flags_.set_flags(arg);
+  }
+  void clear_flags() {
+    flags_.clear_flags();
+  }
+  void add_flags(const flags_t arg) {
+    flags_.add_flags(arg);
+  }
+  void drop_flags(const flags_t arg) {
+    flags_.drop_flags(arg);
+  }
+};
+
+#endif // _FLAGS_H
-- 
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