127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#pragma once
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#include "ui/text/text.h"
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namespace Ui::Text {
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class Parser {
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public:
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Parser(
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not_null<String*> string,
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const TextWithEntities &textWithEntities,
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const TextParseOptions &options,
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const std::any &context);
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private:
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struct ReadyToken {
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};
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class StartedEntity {
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public:
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enum class Type {
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Flags,
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Link,
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IndexedLink,
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Spoiler,
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CustomEmoji,
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};
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explicit StartedEntity(TextBlockFlags flags);
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explicit StartedEntity(uint16 index, Type type);
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[[nodiscard]] Type type() const;
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[[nodiscard]] std::optional<TextBlockFlags> flags() const;
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[[nodiscard]] std::optional<uint16> lnkIndex() const;
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[[nodiscard]] std::optional<uint16> spoilerIndex() const;
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private:
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const int _value = 0;
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const Type _type;
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};
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Parser(
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not_null<String*> string,
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TextWithEntities &&source,
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const TextParseOptions &options,
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const std::any &context,
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ReadyToken);
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void trimSourceRange();
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void blockCreated();
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void createBlock(int32 skipBack = 0);
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void createNewlineBlock();
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// Returns true if at least one entity was parsed in the current position.
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bool checkEntities();
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void parseCurrentChar();
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void parseEmojiFromCurrent();
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void finalize(const TextParseOptions &options);
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void finishEntities();
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void skipPassedEntities();
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void skipBadEntities();
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bool isInvalidEntity(const EntityInText &entity) const;
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bool isLinkEntity(const EntityInText &entity) const;
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bool processCustomIndex(uint16 index);
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void parse(const TextParseOptions &options);
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void computeLinkText(
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const QString &linkData,
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QString *outLinkText,
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EntityLinkShown *outShown);
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const not_null<String*> _t;
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const TextWithEntities _source;
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const std::any &_context;
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const QChar * const _start = nullptr;
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const QChar *_end = nullptr; // mutable, because we trim by decrementing.
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const QChar *_ptr = nullptr;
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const EntitiesInText::const_iterator _entitiesEnd;
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EntitiesInText::const_iterator _waitingEntity;
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QString _customEmojiData;
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const bool _multiline = false;
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const QFixed _stopAfterWidth; // summary width of all added words
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const bool _checkTilde = false; // do we need a special text block for tilde symbol
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std::vector<uint16> _linksIndexes;
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std::vector<EntityLinkData> _links;
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std::vector<EntityLinkData> _spoilers;
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std::vector<EntityLinkData> _monos;
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base::flat_map<
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const QChar*,
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std::vector<StartedEntity>> _startedEntities;
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uint16 _maxLnkIndex = 0;
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uint16 _maxShiftedLnkIndex = 0;
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// current state
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int32 _flags = 0;
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uint16 _lnkIndex = 0;
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uint16 _spoilerIndex = 0;
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uint16 _monoIndex = 0;
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EmojiPtr _emoji = nullptr; // current emoji, if current word is an emoji, or zero
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int32 _blockStart = 0; // offset in result, from which current parsed block is started
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int32 _diacs = 0; // diac chars skipped without good char
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QFixed _sumWidth;
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bool _sumFinished = false;
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bool _newlineAwaited = false;
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// current char data
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QChar _ch; // current char (low surrogate, if current char is surrogate pair)
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int32 _emojiLookback = 0; // how far behind the current ptr to look for current emoji
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bool _allowDiacritic = false; // did we add last char to the current block
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};
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} // namespace Ui::Text
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