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Location: cpp/openttd-patchpack/source/src/misc/array.hpp - annotation
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(svn r19502) -Codechange: During NewGRF loading, store rail type labels in temporary data and process after loading has finished. This avoids deactivated rail vehicles being reactivated if the climate property is set after the rail type property.
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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file array.hpp Array without an explicit maximum size. */
#ifndef ARRAY_HPP
#define ARRAY_HPP
#include "fixedsizearray.hpp"
#include "str.hpp"
/** Flexible array with size limit. Implemented as fixed size
* array of fixed size arrays */
template <class T, uint B = 1024, uint N = B>
class SmallArray {
protected:
typedef FixedSizeArray<T, B> SubArray; ///< inner array
typedef FixedSizeArray<SubArray, N> SuperArray; ///< outer array
static const uint Tcapacity = B * N; ///< total max number of items
SuperArray data; ///< array of arrays of items
/** return first sub-array with free space for new item */
FORCEINLINE SubArray& FirstFreeSubArray()
{
uint super_size = data.Length();
if (super_size > 0) {
SubArray& s = data[super_size - 1];
if (!s.IsFull()) return s;
}
return *data.AppendC();
}
public:
/** implicit constructor */
FORCEINLINE SmallArray() { }
/** Clear (destroy) all items */
FORCEINLINE void Clear() {data.Clear();}
/** Return actual number of items */
FORCEINLINE uint Length() const
{
uint super_size = data.Length();
if (super_size == 0) return 0;
uint sub_size = data[super_size - 1].Length();
return (super_size - 1) * B + sub_size;
}
/** return true if array is empty */
FORCEINLINE bool IsEmpty() { return data.IsEmpty(); }
/** return true if array is full */
FORCEINLINE bool IsFull() { return data.IsFull() && data[N - 1].IsFull(); }
/** allocate but not construct new item */
FORCEINLINE T *Append() { return FirstFreeSubArray().Append(); }
/** allocate and construct new item */
FORCEINLINE T *AppendC() { return FirstFreeSubArray().AppendC(); }
/** indexed access (non-const) */
FORCEINLINE T& operator [] (uint index)
{
const SubArray& s = data[index / B];
T& item = s[index % B];
return item;
}
/** indexed access (const) */
FORCEINLINE const T& operator [] (uint index) const
{
const SubArray& s = data[index / B];
const T& item = s[index % B];
return item;
}
template <typename D> void Dump(D &dmp) const
{
dmp.WriteLine("capacity = %d", Tcapacity);
uint num_items = Length();
dmp.WriteLine("num_items = %d", num_items);
CStrA name;
for (uint i = 0; i < num_items; i++) {
const T& item = (*this)[i];
name.Format("item[%d]", i);
dmp.WriteStructT(name.Data(), &item);
}
}
};
#endif /* ARRAY_HPP */
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