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AK: Make StringView::hash() constexpr

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This required moving string_hash() to its own header so that everyone
can see it.
This commit is contained in:
Andreas Kling 2021-05-14 15:21:50 +02:00
parent 9c38475608
commit 3e603b2f32
5 changed files with 36 additions and 25 deletions
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10
AK/StringView.h
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@ -11,6 +11,7 @@
#include <AK/Forward.h>
#include <AK/Span.h>
#include <AK/StdLibExtras.h>
#include <AK/StringHash.h>
#include <AK/StringUtils.h>
#include <AK/Vector.h>
@ -49,7 +50,7 @@ public:
[[nodiscard]] constexpr bool is_null() const { return !m_characters; }
[[nodiscard]] constexpr bool is_empty() const { return m_length == 0; }
[[nodiscard]] const char* characters_without_null_termination() const { return m_characters; }
[[nodiscard]] constexpr char const* characters_without_null_termination() const { return m_characters; }
[[nodiscard]] constexpr size_t length() const { return m_length; }
[[nodiscard]] ReadonlyBytes bytes() const { return { m_characters, m_length }; }
@ -61,7 +62,12 @@ public:
[[nodiscard]] constexpr ConstIterator begin() const { return ConstIterator::begin(*this); }
[[nodiscard]] constexpr ConstIterator end() const { return ConstIterator::end(*this); }
[[nodiscard]] unsigned hash() const;
[[nodiscard]] constexpr unsigned hash() const
{
if (is_empty())
return 0;
return string_hash(characters_without_null_termination(), length());
}
[[nodiscard]] bool starts_with(const StringView&, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
[[nodiscard]] bool ends_with(const StringView&, CaseSensitivity = CaseSensitivity::CaseSensitive) const;