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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
* Copyright (C) 2018 Serge Bazanski <q3k@symbioticeda.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef STR_RING_BUFFER_H
#define STR_RING_BUFFER_H
#include <array>
#include <string>
#include "nextpnr_namespaces.h"
NEXTPNR_NAMESPACE_BEGIN
// A ring buffer of strings, so we can return a simple const char * pointer for %s formatting - inspired by how logging
// in Yosys works Let's just hope noone tries to log more than 100 things in one call....
class StrRingBuffer
{
private:
static const size_t N = 100;
std::array<std::string, N> buffer;
size_t index = 0;
public:
std::string &next();
};
NEXTPNR_NAMESPACE_END
#endif /* STR_RING_BUFFER_H */
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