Sync AMTL.

public/amtl/am-fixedarray.h

@@ -0,0 +1,99 @@
+// vim: set sts=8 ts=2 sw=2 tw=99 et:
+//
+// Copyright (C) 2013-2014, David Anderson and AlliedModders LLC
+// 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 AlliedModders 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 HOLDER 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 _include_amtl_fixedarray_h_
+#define _include_amtl_fixedarray_h_
+
+#include <am-utility.h>
+#include <am-allocator-policies.h>
+#include <am-moveable.h>
+
+namespace ke {
+
+template <typename T, typename AllocPolicy = SystemAllocatorPolicy>
+class FixedArray : public AllocPolicy
+{
+ public:
+  FixedArray(size_t length, AllocPolicy = AllocPolicy()) {
+    length_ = length;
+    data_ = (T *)this->malloc(sizeof(T) * length_);
+    if (!data_)
+      return;
+
+    for (size_t i = 0; i < length_; i++)
+      new (&data_[i]) T();
+  }
+  ~FixedArray() {
+    for (size_t i = 0; i < length_; i++)
+      data_[i].~T();
+    this->free(data_);
+  }
+
+  // This call may be skipped if the allocator policy is infallible.
+  bool initialize() {
+    return length_ == 0 || !!data_;
+  }
+
+  size_t length() const {
+    return length_;
+  }
+  T &operator [](size_t index) {
+    return at(index);
+  }
+  const T &operator [](size_t index) const {
+    return at(index);
+  }
+  T &at(size_t index) {
+    assert(index < length());
+    return data_[index];
+  }
+  const T &at(size_t index) const {
+    assert(index < length());
+    return data_[index];
+  }
+  void set(size_t index, const T &t) {
+    assert(index < length());
+    data_[index] = t;
+  }
+  void set(size_t index, ke::Moveable<T> t) {
+    assert(index < length());
+    data_[index] = t;
+  }
+
+ private:
+  FixedArray(const FixedArray &other) KE_DELETE;
+  FixedArray &operator =(const FixedArray &other) KE_DELETE;
+
+ private:
+  size_t length_;
+  T *data_;
+};
+
+} // namespace ke
+
+#endif // _include_amtl_fixedarray_h_