028be1462a
* apicula: add support for magic sip pins * fix nullptr check * DDR fix by xiwang * WIP support for setting the iostd * add iostd
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 Claire Xenia Wolf <claire@yosyshq.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifndef RELPTR_H
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#define RELPTR_H
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#include <cstdint>
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#include "nextpnr_assertions.h"
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#include "nextpnr_namespaces.h"
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NEXTPNR_NAMESPACE_BEGIN
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template <typename T> struct RelPtr
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{
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int32_t offset;
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const T *get() const { return reinterpret_cast<const T *>(reinterpret_cast<const char *>(this) + offset); }
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bool is_null() const { return offset == 0; }
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const T &operator[](std::size_t index) const { return get()[index]; }
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const T &operator*() const { return *(get()); }
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const T *operator->() const { return get(); }
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RelPtr(const RelPtr &) = delete;
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RelPtr &operator=(const RelPtr &) = delete;
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};
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NPNR_PACKED_STRUCT(template <typename T> struct RelSlice {
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int32_t offset;
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uint32_t length;
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const T *get() const { return reinterpret_cast<const T *>(reinterpret_cast<const char *>(this) + offset); }
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const T &operator[](std::size_t index) const
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{
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NPNR_ASSERT(index < length);
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return get()[index];
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}
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const T *begin() const { return get(); }
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const T *end() const { return get() + length; }
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size_t size() const { return length; }
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ptrdiff_t ssize() const { return length; }
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const T &operator*() const { return *(get()); }
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const T *operator->() const { return get(); }
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RelSlice(const RelSlice &) = delete;
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RelSlice &operator=(const RelSlice &) = delete;
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});
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NEXTPNR_NAMESPACE_END
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#endif /* RELPTR_H */
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