Remove GrBinHashKey

include/gpu/GrBinHashKey.h

-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#ifndef GrBinHashKey_DEFINED
-#define GrBinHashKey_DEFINED
-
-#include "GrTypes.h"
-
-/**
- *  GrBinHashKey is a hash key class that can take a data chunk of any predetermined
- *  length. The hash function used is the One-at-a-Time Hash
- *  (http://burtleburtle.net/bob/hash/doobs.html).
- */
-template<size_t KEY_SIZE>
-class GrBinHashKey {
-public:
-    enum { kKeySize = KEY_SIZE };
-
-    GrBinHashKey() {
-        this->reset();
-    }
-
-    void reset() {
-        fHash = 0;
-#ifdef SK_DEBUG
-        fIsValid = false;
-#endif
-    }
-
-    void setKeyData(const uint32_t* SK_RESTRICT data) {
-        SK_COMPILE_ASSERT(KEY_SIZE % 4 == 0, key_size_mismatch);
-        memcpy(&fData, data, KEY_SIZE);
-
-        uint32_t hash = 0;
-        size_t len = KEY_SIZE;
-        while (len >= 4) {
-            hash += *data++;
-            hash += (hash << 10);
-            hash ^= (hash >> 6);
-            len -= 4;
-        }
-        hash += (hash << 3);
-        hash ^= (hash >> 11);
-        hash += (hash << 15);
-#ifdef SK_DEBUG
-        fIsValid = true;
-#endif
-        fHash = hash;
-    }
-
-    bool operator==(const GrBinHashKey<KEY_SIZE>& key) const {
-        SkASSERT(fIsValid && key.fIsValid);
-        if (fHash != key.fHash) {
-            return false;
-        }
-        for (size_t i = 0; i < SK_ARRAY_COUNT(fData); ++i) {
-            if (fData[i] != key.fData[i]) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    bool operator<(const GrBinHashKey<KEY_SIZE>& key) const {
-        SkASSERT(fIsValid && key.fIsValid);
-        for (size_t i = 0; i < SK_ARRAY_COUNT(fData); ++i) {
-            if (fData[i] < key.fData[i]) {
-                return true;
-            } else if (fData[i] > key.fData[i]) {
-                return false;
-            }
-        }
-        return false;
-    }
-
-    uint32_t getHash() const {
-        SkASSERT(fIsValid);
-        return fHash;
-    }
-
-    const uint8_t* getData() const {
-        SkASSERT(fIsValid);
-        return reinterpret_cast<const uint8_t*>(fData);
-    }
-
-private:
-    uint32_t            fHash;
-    uint32_t            fData[KEY_SIZE / sizeof(uint32_t)];  // Buffer for key storage.
-
-#ifdef SK_DEBUG
-public:
-    bool                fIsValid;
-#endif
-};
-
-#endif