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9a120d7243
These are formatters that can only be used with debug print
functions, such as dbgln(). Currently this is limited to
Formatter<ErrorOr<T>>. With this you can still debug log ErrorOr
values (good for debugging), but trying to use them in any
String::formatted() call will fail (which prevents .to_string()
errors with the new failable strings being ignored).
You make a formatter debug only by adding a constexpr method like:
static constexpr bool is_debug_only() { return true; }
347 lines
13 KiB
C++
347 lines
13 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.build();
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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<(char 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>(char 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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