michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* A handy class that will allocate data for size*T objects on the stack and
michael@0:  * otherwise allocate them on the heap. It is similar in purpose to nsAutoTArray */
michael@0: 
michael@0: template <class T, size_t size>
michael@0: class StackArray
michael@0: {
michael@0: public:
michael@0:   StackArray(size_t count) {
michael@0:     if (count > size) {
michael@0:       mData = new T[count];
michael@0:     } else {
michael@0:       mData = mStackData;
michael@0:     }
michael@0:   }
michael@0:   ~StackArray() {
michael@0:     if (mData != mStackData) {
michael@0:       delete[] mData;
michael@0:     }
michael@0:   }
michael@0:   T& operator[](size_t n) { return mData[n]; }
michael@0:   const T& operator[](size_t n) const { return mData[n]; }
michael@0:   T* data() { return mData; };
michael@0: private:
michael@0:   T mStackData[size];
michael@0:   T* mData;
michael@0: };