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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "simple_buffer.h"
#include <cassert>
namespace vespalib {
SimpleBuffer::SimpleBuffer()
: _data(),
_used(0)
{
}
SimpleBuffer::~SimpleBuffer() { }
Memory
SimpleBuffer::obtain()
{
return Memory(&_data[0], _used);
}
Input &
SimpleBuffer::evict(size_t bytes)
{
assert(bytes <= _used);
_data.erase(_data.begin(), _data.begin() + bytes);
_used -= bytes;
return *this;
}
WritableMemory
SimpleBuffer::reserve(size_t bytes)
{
assert((_used + bytes) >= _used);
_data.resize(_used + bytes, char(0x55));
return WritableMemory(&_data[_used], bytes);
}
Output &
SimpleBuffer::commit(size_t bytes)
{
assert(bytes <= (_data.size() - _used));
_used += bytes;
return *this;
}
std::ostream &operator<<(std::ostream &os, const SimpleBuffer &buf) {
return os << buf.get();
}
} // namespace vespalib
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