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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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* Copyright (c) 2008 Mozilla Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef jArray_h__
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#define jArray_h__
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#define J_ARRAY_STATIC(T, L, arr) \
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jArray<T,L>( ((T*)arr), (sizeof(arr)/sizeof(arr[0])) )
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template<class T, class L>
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class jArray {
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private:
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T* arr;
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public:
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L length;
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jArray(T* const a, L const len);
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jArray(L const len);
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jArray(const jArray<T,L>& other);
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jArray();
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operator T*() { return arr; }
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T& operator[] (L const index) { return arr[index]; }
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void release() { delete[] arr; arr = 0; length = 0; }
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L binarySearch(T const elem);
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};
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template<class T, class L>
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jArray<T,L>::jArray(T* const a, L const len)
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: arr(a), length(len)
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{
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}
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template<class T, class L>
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jArray<T,L>::jArray(L const len)
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: arr(len ? new T[len] : 0), length(len)
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{
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}
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template<class T, class L>
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jArray<T,L>::jArray(const jArray<T,L>& other)
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: arr(other.arr), length(other.length)
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{
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}
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template<class T, class L>
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jArray<T,L>::jArray()
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: arr(0), length(0)
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{
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}
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template<class T, class L>
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L
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jArray<T,L>::binarySearch(T const elem)
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{
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L lo = 0;
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L hi = length - 1;
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while (lo <= hi) {
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L mid = (lo + hi) / 2;
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if (arr[mid] > elem) {
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hi = mid - 1;
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} else if (arr[mid] < elem) {
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lo = mid + 1;
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} else {
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return mid;
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}
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}
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return -1;
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}
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#endif // jArray_h__
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