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AK: Reimplement StringView::find methods in StringUtils

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This patch reimplements the StringView::find methods in StringUtils, so
they can also be used by String. The methods now also take an optional
start parameter, which moves their API in line with String's respective
methods.

This also implements a StringView::find_ast(char) method, which is
currently functionally equivalent to find_last_of(char). This is because
find_last_of(char) will be removed in a further commit.
This commit is contained in:
Max Wipfli 2021-07-01 14:58:37 +02:00 • committed by Andreas Kling
parent 3ea65200d8
commit 56253bf389
5 changed files with 37 additions and 20 deletions
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6
AK/StringView.h
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@ -92,8 +92,10 @@ public:
Optional<size_t> find_last_of(char) const;
Optional<size_t> find_last_of(const StringView&) const;
Optional<size_t> find(const StringView&) const;
Optional<size_t> find(char c) const;
[[nodiscard]] Optional<size_t> find(char needle, size_t start = 0) const { return StringUtils::find(*this, needle, start); }
[[nodiscard]] Optional<size_t> find(StringView const& needle, size_t start = 0) const { return StringUtils::find(*this, needle, start); }
[[nodiscard]] Optional<size_t> find_last(char needle) const { return StringUtils::find_last(*this, needle); }
// FIXME: Implement find_last(StringView const&) for API symmetry.
[[nodiscard]] constexpr StringView substring_view(size_t start, size_t length) const
{