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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/memory/ref_counted_memory.h"
      6 
      7 #include "base/logging.h"
      8 
      9 namespace base {
     10 
     11 bool RefCountedMemory::Equals(
     12     const scoped_refptr<RefCountedMemory>& other) const {
     13   return other.get() &&
     14          size() == other->size() &&
     15          (memcmp(front(), other->front(), size()) == 0);
     16 }
     17 
     18 RefCountedMemory::RefCountedMemory() {}
     19 
     20 RefCountedMemory::~RefCountedMemory() {}
     21 
     22 const unsigned char* RefCountedStaticMemory::front() const {
     23   return data_;
     24 }
     25 
     26 size_t RefCountedStaticMemory::size() const {
     27   return length_;
     28 }
     29 
     30 RefCountedStaticMemory::~RefCountedStaticMemory() {}
     31 
     32 RefCountedBytes::RefCountedBytes() {}
     33 
     34 RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer)
     35     : data_(initializer) {
     36 }
     37 
     38 RefCountedBytes::RefCountedBytes(const unsigned char* p, size_t size)
     39     : data_(p, p + size) {}
     40 
     41 scoped_refptr<RefCountedBytes> RefCountedBytes::TakeVector(
     42     std::vector<unsigned char>* to_destroy) {
     43   scoped_refptr<RefCountedBytes> bytes(new RefCountedBytes);
     44   bytes->data_.swap(*to_destroy);
     45   return bytes;
     46 }
     47 
     48 const unsigned char* RefCountedBytes::front() const {
     49   // STL will assert if we do front() on an empty vector, but calling code
     50   // expects a NULL.
     51   return size() ? &data_.front() : NULL;
     52 }
     53 
     54 size_t RefCountedBytes::size() const {
     55   return data_.size();
     56 }
     57 
     58 RefCountedBytes::~RefCountedBytes() {}
     59 
     60 RefCountedString::RefCountedString() {}
     61 
     62 RefCountedString::~RefCountedString() {}
     63 
     64 // static
     65 scoped_refptr<RefCountedString> RefCountedString::TakeString(
     66     std::string* to_destroy) {
     67   scoped_refptr<RefCountedString> self(new RefCountedString);
     68   to_destroy->swap(self->data_);
     69   return self;
     70 }
     71 
     72 const unsigned char* RefCountedString::front() const {
     73   return data_.empty() ? NULL :
     74          reinterpret_cast<const unsigned char*>(data_.data());
     75 }
     76 
     77 size_t RefCountedString::size() const {
     78   return data_.size();
     79 }
     80 
     81 }  //  namespace base
     82