blob: fb98ae0d21f5bd4e4a653174723fd389931e6157 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsURIHashKey_h__
#define nsURIHashKey_h__
#include <utility>
#include "PLDHashTable.h"
#include "mozilla/Unused.h"
#include "nsCOMPtr.h"
#include "nsHashKeys.h"
#include "nsIURI.h"
/**
* Hashtable key class to use with nsTHashtable/nsBaseHashtable
*/
class nsURIHashKey : public PLDHashEntryHdr {
public:
typedef nsIURI* KeyType;
typedef const nsIURI* KeyTypePointer;
nsURIHashKey() { MOZ_COUNT_CTOR(nsURIHashKey); }
explicit nsURIHashKey(const nsIURI* aKey) : mKey(const_cast<nsIURI*>(aKey)) {
MOZ_COUNT_CTOR(nsURIHashKey);
}
nsURIHashKey(nsURIHashKey&& toMove)
: PLDHashEntryHdr(std::move(toMove)), mKey(std::move(toMove.mKey)) {
MOZ_COUNT_CTOR(nsURIHashKey);
}
MOZ_COUNTED_DTOR(nsURIHashKey)
nsURIHashKey& operator=(const nsURIHashKey& aOther) {
mKey = aOther.mKey;
return *this;
}
nsIURI* GetKey() const { return mKey; }
bool KeyEquals(const nsIURI* aKey) const {
bool eq;
if (!mKey) {
return !aKey;
}
if (NS_SUCCEEDED(mKey->Equals(const_cast<nsIURI*>(aKey), &eq))) {
return eq;
}
return false;
}
static const nsIURI* KeyToPointer(nsIURI* aKey) { return aKey; }
static PLDHashNumber HashKey(const nsIURI* aKey) {
if (!aKey) {
// If the key is null, return hash for empty string.
return mozilla::HashString(""_ns);
}
nsAutoCString spec;
// If GetSpec() fails, ignoring the failure and proceeding with an
// empty |spec| seems like the best thing to do.
mozilla::Unused << const_cast<nsIURI*>(aKey)->GetSpec(spec);
return mozilla::HashString(spec);
}
enum { ALLOW_MEMMOVE = true };
protected:
nsCOMPtr<nsIURI> mKey;
};
#endif // nsURIHashKey_h__
|
