| 1 | /* |
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| 2 | SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org> |
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| 3 | |
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| 4 | SPDX-License-Identifier: MIT |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef KSYNTAXHIGHLIGHTING_STATE_H |
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| 8 | #define KSYNTAXHIGHLIGHTING_STATE_H |
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| 9 | |
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| 10 | #include "ksyntaxhighlighting_export.h" |
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| 11 | |
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| 12 | #include <QExplicitlySharedDataPointer> |
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| 13 | #include <QHash> |
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| 14 | |
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| 15 | namespace KSyntaxHighlighting |
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| 16 | { |
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| 17 | class State; |
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| 18 | class StateData; |
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| 19 | |
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| 20 | KSYNTAXHIGHLIGHTING_EXPORT std::size_t qHash(const State &state, std::size_t seed = 0); |
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| 21 | |
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| 22 | /** Opaque handle to the state of the highlighting engine. |
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| 23 | * This needs to be fed into AbstractHighlighter for every line of text |
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| 24 | * and allows concrete highlighter implementations to store state per |
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| 25 | * line for fast re-highlighting of specific lines (e.g. during editing). |
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| 26 | * |
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| 27 | * @since 5.28 |
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| 28 | */ |
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| 29 | class KSYNTAXHIGHLIGHTING_EXPORT State |
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| 30 | { |
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| 31 | public: |
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| 32 | /** Creates an initial state, ie. what should be used for the first line |
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| 33 | * in a document. |
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| 34 | */ |
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| 35 | State(); |
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| 36 | State(State &&other) noexcept; |
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| 37 | State(const State &other); |
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| 38 | ~State(); |
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| 39 | State &operator=(State &&rhs) noexcept; |
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| 40 | State &operator=(const State &rhs); |
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| 41 | |
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| 42 | /** Compares two states for equality. |
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| 43 | * For two equal states and identical text input, AbstractHighlighter |
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| 44 | * guarantees to produce equal results. This can be used to only |
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| 45 | * re-highlight as many lines as necessary during editing. |
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| 46 | */ |
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| 47 | bool operator==(const State &other) const; |
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| 48 | /** Compares two states for inequality. |
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| 49 | * This is the opposite of operator==(). |
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| 50 | */ |
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| 51 | bool operator!=(const State &other) const; |
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| 52 | |
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| 53 | /** |
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| 54 | * Returns whether or not indentation-based folding is enabled in this state. |
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| 55 | * When using a Definition with indentation-based folding, use |
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| 56 | * this method to check if indentation-based folding has been |
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| 57 | * suspended in the current line. |
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| 58 | * |
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| 59 | * @see Definition::indentationBasedFoldingEnabled() |
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| 60 | */ |
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| 61 | bool indentationBasedFoldingEnabled() const; |
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| 62 | |
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| 63 | private: |
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| 64 | friend class StateData; |
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| 65 | friend std::size_t qHash(const State &, std::size_t); |
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| 66 | QExplicitlySharedDataPointer<StateData> d; |
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| 67 | }; |
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| 68 | } |
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| 69 | |
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| 70 | QT_BEGIN_NAMESPACE |
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| 71 | Q_DECLARE_TYPEINFO(KSyntaxHighlighting::State, Q_RELOCATABLE_TYPE); |
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| 72 | QT_END_NAMESPACE |
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| 73 | |
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| 74 | #endif // KSYNTAXHIGHLIGHTING_STATE_H |
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| 75 | |
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