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https://github.com/LadybirdBrowser/ladybird.git
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6e7459322d
Having an alias function that only wraps another one is silly, and keeping the more obvious name should flush out more uses of deprecated strings. No behavior change.
345 lines
12 KiB
C++
345 lines
12 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Format.h>
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#include <AK/Forward.h>
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#include <AK/RefPtr.h>
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#include <AK/Stream.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringImpl.h>
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#include <AK/StringUtils.h>
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#include <AK/Traits.h>
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namespace AK {
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// DeprecatedString is a convenience wrapper around StringImpl, suitable for passing
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// around as a value type. It's basically the same as passing around a
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// RefPtr<StringImpl>, with a bit of syntactic sugar.
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//
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// Note that StringImpl is an immutable object that cannot shrink or grow.
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// Its allocation size is snugly tailored to the specific string it contains.
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// Copying a DeprecatedString is very efficient, since the internal StringImpl is
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// retainable and so copying only requires modifying the ref count.
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//
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// There are three main ways to construct a new DeprecatedString:
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//
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// s = DeprecatedString("some literal");
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//
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// s = DeprecatedString::formatted("{} little piggies", m_piggies);
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//
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// StringBuilder builder;
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// builder.append("abc");
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// builder.append("123");
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// s = builder.to_deprecated_string();
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class DeprecatedString {
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public:
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~DeprecatedString() = default;
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DeprecatedString() = default;
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DeprecatedString(StringView view)
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: m_impl(StringImpl::create(view.characters_without_null_termination(), view.length()))
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{
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}
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DeprecatedString(DeprecatedString const& other)
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: m_impl(const_cast<DeprecatedString&>(other).m_impl)
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{
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}
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DeprecatedString(DeprecatedString&& other)
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: m_impl(move(other.m_impl))
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{
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}
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DeprecatedString(char const* cstring, ShouldChomp shouldChomp = NoChomp)
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: m_impl(StringImpl::create(cstring, shouldChomp))
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{
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}
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DeprecatedString(char const* cstring, size_t length, ShouldChomp shouldChomp = NoChomp)
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: m_impl(StringImpl::create(cstring, length, shouldChomp))
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{
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}
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explicit DeprecatedString(ReadonlyBytes bytes, ShouldChomp shouldChomp = NoChomp)
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: m_impl(StringImpl::create(bytes, shouldChomp))
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{
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}
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DeprecatedString(StringImpl const& impl)
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: m_impl(const_cast<StringImpl&>(impl))
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{
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}
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DeprecatedString(StringImpl const* impl)
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: m_impl(const_cast<StringImpl*>(impl))
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{
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}
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DeprecatedString(RefPtr<StringImpl>&& impl)
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: m_impl(move(impl))
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{
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}
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DeprecatedString(NonnullRefPtr<StringImpl>&& impl)
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: m_impl(move(impl))
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{
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}
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DeprecatedString(DeprecatedFlyString const&);
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[[nodiscard]] static DeprecatedString repeated(char, size_t count);
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[[nodiscard]] static DeprecatedString repeated(StringView, size_t count);
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[[nodiscard]] static DeprecatedString bijective_base_from(size_t value, unsigned base = 26, StringView map = {});
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[[nodiscard]] static DeprecatedString roman_number_from(size_t value);
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template<class SeparatorType, class CollectionType>
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[[nodiscard]] static DeprecatedString join(SeparatorType const& separator, CollectionType const& collection, StringView fmtstr = "{}"sv)
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{
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StringBuilder builder;
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builder.join(separator, collection, fmtstr);
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return builder.to_deprecated_string();
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}
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[[nodiscard]] bool matches(StringView mask, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
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[[nodiscard]] bool matches(StringView mask, Vector<MaskSpan>&, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
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template<typename T = int>
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[[nodiscard]] Optional<T> to_int(TrimWhitespace = TrimWhitespace::Yes) const;
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template<typename T = unsigned>
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[[nodiscard]] Optional<T> to_uint(TrimWhitespace = TrimWhitespace::Yes) const;
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#ifndef KERNEL
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[[nodiscard]] Optional<double> to_double(TrimWhitespace = TrimWhitespace::Yes) const;
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[[nodiscard]] Optional<float> to_float(TrimWhitespace = TrimWhitespace::Yes) const;
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#endif
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[[nodiscard]] DeprecatedString to_lowercase() const;
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[[nodiscard]] DeprecatedString to_uppercase() const;
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[[nodiscard]] DeprecatedString to_snakecase() const;
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[[nodiscard]] DeprecatedString to_titlecase() const;
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[[nodiscard]] DeprecatedString invert_case() const;
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[[nodiscard]] bool is_whitespace() const { return StringUtils::is_whitespace(*this); }
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[[nodiscard]] DeprecatedString trim(StringView characters, TrimMode mode = TrimMode::Both) const
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{
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auto trimmed_view = StringUtils::trim(view(), characters, mode);
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if (view() == trimmed_view)
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return *this;
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return trimmed_view;
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}
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[[nodiscard]] DeprecatedString trim_whitespace(TrimMode mode = TrimMode::Both) const
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{
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auto trimmed_view = StringUtils::trim_whitespace(view(), mode);
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if (view() == trimmed_view)
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return *this;
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return trimmed_view;
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}
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[[nodiscard]] bool equals_ignoring_case(StringView) const;
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[[nodiscard]] bool contains(StringView, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
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[[nodiscard]] bool contains(char, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
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[[nodiscard]] Vector<DeprecatedString> split_limit(char separator, size_t limit, SplitBehavior = SplitBehavior::Nothing) const;
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[[nodiscard]] Vector<DeprecatedString> split(char separator, SplitBehavior = SplitBehavior::Nothing) const;
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[[nodiscard]] Vector<StringView> split_view(char separator, SplitBehavior = SplitBehavior::Nothing) const;
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[[nodiscard]] Vector<StringView> split_view(Function<bool(char)> separator, SplitBehavior = SplitBehavior::Nothing) const;
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[[nodiscard]] Optional<size_t> find(char needle, size_t start = 0) const { return StringUtils::find(*this, needle, start); }
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[[nodiscard]] Optional<size_t> find(StringView needle, size_t start = 0) const { return StringUtils::find(*this, needle, start); }
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[[nodiscard]] Optional<size_t> find_last(char needle) const { return StringUtils::find_last(*this, needle); }
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[[nodiscard]] Optional<size_t> find_last(StringView needle) const { return StringUtils::find_last(*this, needle); }
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Vector<size_t> find_all(StringView needle) const;
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using SearchDirection = StringUtils::SearchDirection;
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[[nodiscard]] Optional<size_t> find_any_of(StringView needles, SearchDirection direction) const { return StringUtils::find_any_of(*this, needles, direction); }
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[[nodiscard]] StringView find_last_split_view(char separator) const { return view().find_last_split_view(separator); }
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[[nodiscard]] DeprecatedString substring(size_t start, size_t length) const;
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[[nodiscard]] DeprecatedString substring(size_t start) const;
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[[nodiscard]] StringView substring_view(size_t start, size_t length) const;
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[[nodiscard]] StringView substring_view(size_t start) const;
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[[nodiscard]] bool is_null() const { return !m_impl; }
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[[nodiscard]] ALWAYS_INLINE bool is_empty() const { return length() == 0; }
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[[nodiscard]] ALWAYS_INLINE size_t length() const { return m_impl ? m_impl->length() : 0; }
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// Includes NUL-terminator, if non-nullptr.
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[[nodiscard]] ALWAYS_INLINE char const* characters() const { return m_impl ? m_impl->characters() : nullptr; }
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[[nodiscard]] bool copy_characters_to_buffer(char* buffer, size_t buffer_size) const;
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[[nodiscard]] ALWAYS_INLINE ReadonlyBytes bytes() const
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{
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if (m_impl) {
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return m_impl->bytes();
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}
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return {};
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}
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[[nodiscard]] ALWAYS_INLINE char const& operator[](size_t i) const
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{
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VERIFY(!is_null());
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return (*m_impl)[i];
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}
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[[nodiscard]] ALWAYS_INLINE u8 byte_at(size_t i) const
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{
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VERIFY(!is_null());
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return bit_cast<u8>((*m_impl)[i]);
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}
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using ConstIterator = SimpleIterator<const DeprecatedString, char const>;
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[[nodiscard]] constexpr ConstIterator begin() const { return ConstIterator::begin(*this); }
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[[nodiscard]] constexpr ConstIterator end() const { return ConstIterator::end(*this); }
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[[nodiscard]] bool starts_with(StringView, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
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[[nodiscard]] bool ends_with(StringView, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
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[[nodiscard]] bool starts_with(char) const;
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[[nodiscard]] bool ends_with(char) const;
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bool operator==(DeprecatedString const&) const;
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bool operator==(StringView) const;
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bool operator==(DeprecatedFlyString const&) const;
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bool operator<(DeprecatedString const&) const;
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bool operator>=(DeprecatedString const& other) const { return !(*this < other); }
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bool operator>=(char const* other) const { return !(*this < other); }
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bool operator>(DeprecatedString const&) const;
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bool operator<=(DeprecatedString const& other) const { return !(*this > other); }
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bool operator<=(char const* other) const { return !(*this > other); }
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bool operator==(char const* cstring) const;
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[[nodiscard]] DeprecatedString isolated_copy() const;
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[[nodiscard]] static DeprecatedString empty()
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{
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return StringImpl::the_empty_stringimpl();
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}
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[[nodiscard]] StringImpl* impl() { return m_impl.ptr(); }
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[[nodiscard]] StringImpl const* impl() const { return m_impl.ptr(); }
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DeprecatedString& operator=(DeprecatedString&& other)
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{
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if (this != &other)
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m_impl = move(other.m_impl);
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return *this;
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}
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DeprecatedString& operator=(DeprecatedString const& other)
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{
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if (this != &other)
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m_impl = const_cast<DeprecatedString&>(other).m_impl;
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return *this;
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}
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DeprecatedString& operator=(nullptr_t)
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{
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m_impl = nullptr;
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return *this;
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}
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DeprecatedString& operator=(ReadonlyBytes bytes)
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{
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m_impl = StringImpl::create(bytes);
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return *this;
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}
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[[nodiscard]] u32 hash() const
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{
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if (!m_impl)
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return 0;
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return m_impl->hash();
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}
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[[nodiscard]] ByteBuffer to_byte_buffer() const;
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template<typename BufferType>
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[[nodiscard]] static DeprecatedString copy(BufferType const& buffer, ShouldChomp should_chomp = NoChomp)
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{
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if (buffer.is_empty())
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return empty();
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return DeprecatedString((char const*)buffer.data(), buffer.size(), should_chomp);
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}
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[[nodiscard]] static DeprecatedString vformatted(StringView fmtstr, TypeErasedFormatParams&);
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template<typename... Parameters>
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[[nodiscard]] static DeprecatedString formatted(CheckedFormatString<Parameters...>&& fmtstr, Parameters const&... parameters)
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{
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VariadicFormatParams<AllowDebugOnlyFormatters::No, Parameters...> variadic_format_parameters { parameters... };
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return vformatted(fmtstr.view(), variadic_format_parameters);
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}
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template<Arithmetic T>
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[[nodiscard]] static DeprecatedString number(T value)
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{
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return formatted("{}", value);
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}
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[[nodiscard]] StringView view() const
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{
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return { characters(), length() };
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}
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[[nodiscard]] DeprecatedString replace(StringView needle, StringView replacement, ReplaceMode replace_mode = ReplaceMode::All) const { return StringUtils::replace(*this, needle, replacement, replace_mode); }
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[[nodiscard]] size_t count(StringView needle) const { return StringUtils::count(*this, needle); }
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[[nodiscard]] DeprecatedString reverse() const;
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template<typename... Ts>
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[[nodiscard]] ALWAYS_INLINE constexpr bool is_one_of(Ts&&... strings) const
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{
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return (... || this->operator==(forward<Ts>(strings)));
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}
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template<typename... Ts>
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[[nodiscard]] ALWAYS_INLINE constexpr bool is_one_of_ignoring_case(Ts&&... strings) const
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{
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return (... ||
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[this, &strings]() -> bool {
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if constexpr (requires(Ts a) { a.view()->StringView; })
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return this->equals_ignoring_case(forward<Ts>(strings.view()));
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else
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return this->equals_ignoring_case(forward<Ts>(strings));
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}());
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}
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private:
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RefPtr<StringImpl> m_impl;
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};
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template<>
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struct Traits<DeprecatedString> : public GenericTraits<DeprecatedString> {
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static unsigned hash(DeprecatedString const& s) { return s.impl() ? s.impl()->hash() : 0; }
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};
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struct CaseInsensitiveStringTraits : public Traits<DeprecatedString> {
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static unsigned hash(DeprecatedString const& s) { return s.impl() ? s.impl()->case_insensitive_hash() : 0; }
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static bool equals(DeprecatedString const& a, DeprecatedString const& b) { return a.equals_ignoring_case(b); }
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};
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DeprecatedString escape_html_entities(StringView html);
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InputStream& operator>>(InputStream& stream, DeprecatedString& string);
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}
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#if USING_AK_GLOBALLY
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using AK::CaseInsensitiveStringTraits;
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using AK::escape_html_entities;
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#endif
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