1/*
2 * Copyright 2010 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef GrKey_DEFINED
9#define GrKey_DEFINED
10
11class GrKey : public SkRefCnt {
12public:
13    SK_DECLARE_INST_COUNT(GrKey)
14
15    typedef intptr_t Hash;
16
17    explicit GrKey(Hash hash) : fHash(hash) {}
18
19    intptr_t getHash() const { return fHash; }
20
21    bool operator<(const GrKey& rh) const {
22        return fHash < rh.fHash || (fHash == rh.fHash && this->lt(rh));
23    }
24    bool operator==(const GrKey& rh) const {
25        return fHash == rh.fHash && this->eq(rh);
26    }
27
28protected:
29    virtual bool lt(const GrKey& rh) const = 0;
30    virtual bool eq(const GrKey& rh) const = 0;
31
32private:
33    const Hash fHash;
34
35    typedef SkRefCnt INHERITED;
36};
37
38#endif
39