Bug 1690340 - Part 1: Hide all the panel tools in the developer tools menu. r=jdescottes
[gecko.git] / parser / html / jArray.h
bloba5429e6fd7162d1355d8f8d75f6275e6fe223fda
1 /*
2 * Copyright (c) 2008-2015 Mozilla Foundation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
23 #ifndef jArray_h
24 #define jArray_h
26 #include "mozilla/Attributes.h"
27 #include "mozilla/BinarySearch.h"
28 #include "nsDebug.h"
30 template <class T, class L>
31 struct staticJArray {
32 const T* arr;
33 const L length;
34 operator T*() { return arr; }
35 T& operator[](L const index) {
36 MOZ_ASSERT(index >= 0, "Array access with negative index.");
37 MOZ_ASSERT(index < length, "Array index out of bounds.");
38 return ((T*)arr)[index];
40 L binarySearch(T const elem) {
41 size_t idx;
42 bool found = mozilla::BinarySearch(arr, 0, length, elem, &idx);
43 return found ? idx : -1;
47 template <class T, class L>
48 class autoJArray;
50 template <class T, class L>
51 class jArray {
52 friend class autoJArray<T, L>;
54 private:
55 T* arr;
57 public:
58 L length;
59 static jArray<T, L> newJArray(L const len) {
60 MOZ_ASSERT(len >= 0, "Negative length.");
61 jArray<T, L> newArray = {new T[size_t(len)], len};
62 return newArray;
64 static jArray<T, L> newFallibleJArray(L const len) {
65 MOZ_ASSERT(len >= 0, "Negative length.");
66 T* a = new (mozilla::fallible) T[size_t(len)];
67 jArray<T, L> newArray = {a, a ? len : 0};
68 return newArray;
70 operator T*() { return arr; }
71 T& operator[](L const index) {
72 MOZ_ASSERT(index >= 0, "Array access with negative index.");
73 MOZ_ASSERT(index < length, "Array index out of bounds.");
74 return arr[index];
76 void operator=(staticJArray<T, L>& other) {
77 arr = (T*)other.arr;
78 length = other.length;
80 MOZ_IMPLICIT jArray(decltype(nullptr)) : arr(nullptr), length(0) {}
81 jArray() : arr(nullptr), length(0) {}
83 private:
84 jArray(T* aArr, L aLength) : arr(aArr), length(aLength) {}
87 template <class T, class L>
88 class autoJArray {
89 private:
90 T* arr;
92 public:
93 L length;
94 autoJArray() : arr(0), length(0) {}
95 MOZ_IMPLICIT autoJArray(const jArray<T, L>& other)
96 : arr(other.arr), length(other.length) {}
97 ~autoJArray() { delete[] arr; }
98 operator T*() { return arr; }
99 T& operator[](L const index) {
100 MOZ_ASSERT(index >= 0, "Array access with negative index.");
101 MOZ_ASSERT(index < length, "Array index out of bounds.");
102 return arr[index];
104 operator jArray<T, L>() {
105 // WARNING! This makes it possible to goof with buffer ownership!
106 // This is needed for the getStack and getListOfActiveFormattingElements
107 // methods to work sensibly.
108 jArray<T, L> newArray = {arr, length};
109 return newArray;
111 void operator=(const jArray<T, L>& other) {
112 delete[] arr;
113 arr = other.arr;
114 length = other.length;
116 void operator=(decltype(nullptr)) {
117 // Make assigning null to an array in Java delete the buffer in C++
118 delete[] arr;
119 arr = nullptr;
120 length = 0;
124 #endif // jArray_h