mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
|
|
* Copyright (c) 2008-2010 Mozilla Foundation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef jArray_h
|
|
#define jArray_h
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "mozilla/BinarySearch.h"
|
|
#include "nsDebug.h"
|
|
|
|
template<class T, class L>
|
|
struct staticJArray {
|
|
const T* arr;
|
|
const L length;
|
|
operator T*() { return arr; }
|
|
T& operator[] (L const index) { return ((T*)arr)[index]; }
|
|
L binarySearch(T const elem) {
|
|
size_t idx;
|
|
bool found = mozilla::BinarySearch(arr, 0, length, elem, &idx);
|
|
return found ? idx : -1;
|
|
}
|
|
};
|
|
|
|
template<class T, class L>
|
|
struct jArray {
|
|
T* arr;
|
|
L length;
|
|
static jArray<T,L> newJArray(L const len) {
|
|
NS_ASSERTION(len >= 0, "Bad length.");
|
|
jArray<T,L> newArray = { new T[len], len };
|
|
return newArray;
|
|
}
|
|
operator T*() { return arr; }
|
|
T& operator[] (L const index) { return arr[index]; }
|
|
void operator=(staticJArray<T,L>& other) {
|
|
arr = (T*)other.arr;
|
|
length = other.length;
|
|
}
|
|
};
|
|
|
|
template<class T, class L>
|
|
class autoJArray {
|
|
private:
|
|
T* arr;
|
|
public:
|
|
L length;
|
|
autoJArray()
|
|
: arr(0)
|
|
, length(0)
|
|
{
|
|
}
|
|
MOZ_IMPLICIT autoJArray(const jArray<T,L>& other)
|
|
: arr(other.arr)
|
|
, length(other.length)
|
|
{
|
|
}
|
|
~autoJArray()
|
|
{
|
|
delete[] arr;
|
|
}
|
|
operator T*() { return arr; }
|
|
T& operator[] (L const index) { return arr[index]; }
|
|
operator jArray<T,L>() {
|
|
// WARNING! This makes it possible to goof with buffer ownership!
|
|
// This is needed for the getStack and getListOfActiveFormattingElements
|
|
// methods to work sensibly.
|
|
jArray<T,L> newArray = { arr, length };
|
|
return newArray;
|
|
}
|
|
void operator=(const jArray<T,L>& other) {
|
|
delete[] arr;
|
|
arr = other.arr;
|
|
length = other.length;
|
|
}
|
|
void operator=(decltype(nullptr)) {
|
|
// Make assigning null to an array in Java delete the buffer in C++
|
|
delete[] arr;
|
|
arr = nullptr;
|
|
length = 0;
|
|
}
|
|
};
|
|
|
|
#endif // jArray_h
|