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Added absl::string_view constructor from std::string view #1568

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Added absl::string_view constructor from std::string view #1568

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12 changes: 10 additions & 2 deletions absl/strings/string_view.h
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Original file line number Diff line number Diff line change
Expand Up @@ -43,9 +43,11 @@
#include "absl/base/optimization.h"
#include "absl/base/port.h"

#ifdef ABSL_USES_STD_STRING_VIEW

#ifdef ABSL_HAVE_STD_STRING_VIEW
#include <string_view> // IWYU pragma: export
#endif

#ifdef ABSL_USES_STD_STRING_VIEW

namespace absl {
ABSL_NAMESPACE_BEGIN
Expand Down Expand Up @@ -201,6 +203,12 @@ class string_view {
constexpr string_view(const char* data, size_type len)
: ptr_(data), length_(CheckLengthInternal(len)) {}

#ifdef ABSL_HAVE_STD_STRING_VIEW
// Implicit constructor from std::string view
constexpr string_view(std::string_view str)
: ptr_(str.data ()), length_(CheckLengthInternal(str.size())) {}
#endif

// NOTE: Harmlessly omitted to work around gdb bug.
// constexpr string_view(const string_view&) noexcept = default;
// string_view& operator=(const string_view&) noexcept = default;
Expand Down