83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
#pragma once
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#include <xtl/xspan.hpp>
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namespace nncase
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{
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namespace runtime
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{
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class span_reader
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{
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public:
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span_reader(xtl::span<const uint8_t> span)
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: span_(span)
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{
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}
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bool empty() const noexcept { return span_.empty(); }
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template <class T>
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T read()
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{
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auto value = *reinterpret_cast<const T *>(span_.data());
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advance(sizeof(T));
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return value;
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}
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template <class T>
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void read(T &value)
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{
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value = *reinterpret_cast<const T *>(span_.data());
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advance(sizeof(T));
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}
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template <class T>
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void read_span(xtl::span<const T> &span, size_t size)
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{
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span = { reinterpret_cast<const T *>(span_.data()), size };
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advance(sizeof(T) * size);
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}
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template <class T, ptrdiff_t N>
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void read_span(xtl::span<const T, N> &span)
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{
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span = { reinterpret_cast<const T *>(span_.data()), N };
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advance(sizeof(T) * N);
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}
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template <class T>
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const T *peek() const noexcept
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{
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return reinterpret_cast<const T *>(span_.data());
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}
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template <class T>
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void get_array(const T *&value, size_t size)
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{
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value = peek<T>();
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advance(size * sizeof(T));
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}
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template <class T>
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void get_ref(const T *&value)
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{
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value = peek<T>();
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advance(sizeof(T));
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}
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void skip(size_t count)
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{
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advance(count);
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}
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private:
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void advance(size_t count)
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{
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span_ = span_.subspan(count);
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}
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private:
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xtl::span<const uint8_t> span_;
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};
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}
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}
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