chromium/third_party/dawn/src/dawn/common/ityp_span.h

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#ifndef SRC_DAWN_COMMON_ITYP_SPAN_H_
#define SRC_DAWN_COMMON_ITYP_SPAN_H_

#include <type_traits>

#include "dawn/common/TypedInteger.h"
#include "dawn/common/UnderlyingType.h"

namespace dawn::ityp {

// ityp::span is a helper class that wraps an unowned packed array of type |Value|.
// It stores the size and pointer to first element. It has the restriction that
// indices must be a particular type |Index|. This provides a type-safe way to index
// raw pointers.
template <typename Index, typename Value>
class span { … };

// ityp::SpanFromUntyped<Index>(myValues, myValueCount) creates a span<Index, Value> from a C-style
// span that's without a TypedInteger index. It is useful at the interface between code that doesn't
// use ityp and code that does.
template <typename Index, typename Value>
span<Index, Value> SpanFromUntyped(Value* data, size_t size) { … }

}  // namespace dawn::ityp

#endif  // SRC_DAWN_COMMON_ITYP_SPAN_H_