1 | /* |
2 | SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org> |
3 | |
4 | SPDX-License-Identifier: MIT |
5 | */ |
6 | |
7 | #ifndef KSYNTAXHIGHLIGHTING_FOLDINGREGION_H |
8 | #define KSYNTAXHIGHLIGHTING_FOLDINGREGION_H |
9 | |
10 | #include "ksyntaxhighlighting_export.h" |
11 | |
12 | #include <QTypeInfo> |
13 | |
14 | namespace KSyntaxHighlighting |
15 | { |
16 | /*! |
17 | * \class KSyntaxHighlighting::FoldingRegion |
18 | * \inheaderfile KSyntaxHighlighting/FoldingRegion |
19 | * \inmodule KSyntaxHighlighting |
20 | * |
21 | * \brief Represents a begin or end of a folding region. |
22 | * \since 5.28 |
23 | */ |
24 | class KSYNTAXHIGHLIGHTING_EXPORT FoldingRegion |
25 | { |
26 | public: |
27 | /*! |
28 | * Defines whether a FoldingRegion starts or ends a folding region. |
29 | * |
30 | * \value None |
31 | * \value Begin |
32 | * \value End |
33 | */ |
34 | enum Type { |
35 | None, |
36 | Begin, |
37 | End |
38 | }; |
39 | |
40 | /*! |
41 | * Constructs an invalid folding region, meaning that isValid() returns \c false. |
42 | * To obtain valid instances, see AbstractHighlighter::applyFolding(). |
43 | */ |
44 | FoldingRegion(); |
45 | |
46 | /*! Compares two FoldingRegion instances for equality. */ |
47 | bool operator==(const FoldingRegion &other) const; |
48 | |
49 | /*! |
50 | * Returns \c true if this is a valid folding region. |
51 | * A valid FoldingRegion is defined by a type() other than Type::None. |
52 | * |
53 | * \note The FoldingRegion%s passed in AbstractHighlighter::applyFolding() |
54 | * are always valid. |
55 | */ |
56 | bool isValid() const; |
57 | |
58 | /*! |
59 | * Returns a unique identifier for this folding region. |
60 | * |
61 | * As example, the C/C++ highlighter starts and ends a folding region for |
62 | * scopes, e.g.: |
63 | * \code |
64 | * void foo() { // '{' starts a folding region |
65 | * if (bar()) { // '{' starts a (nested) folding region |
66 | * } // '}' ends the (nested) folding region |
67 | * } // '}' ends the outer folding region |
68 | * \endcode |
69 | * In this example, all braces '{' and '}' have the same id(), meaning that |
70 | * if you want to find the matching closing region for the first opening |
71 | * brace, you need to do kind of a reference counting to find the correct |
72 | * closing brace. |
73 | */ |
74 | int id() const; |
75 | |
76 | /*! |
77 | * Returns whether this is the begin or end of a region. |
78 | * |
79 | * \note The FoldingRegion%s passed in AbstractHighlighter::applyFolding() |
80 | * are always valid, i.e. either Type::Begin or Type::End. |
81 | */ |
82 | Type type() const; |
83 | |
84 | /*! |
85 | * Returns the matching start or end region. |
86 | * |
87 | * \note Will return invalid region for an invalid region. |
88 | * |
89 | * \since 6.0 |
90 | */ |
91 | FoldingRegion sibling() const; |
92 | |
93 | private: |
94 | friend class Rule; |
95 | KSYNTAXHIGHLIGHTING_NO_EXPORT FoldingRegion(Type type, int id); |
96 | |
97 | // 0 is invalid, positive begin, negative end |
98 | int m_idWithType = 0; |
99 | }; |
100 | |
101 | } |
102 | |
103 | QT_BEGIN_NAMESPACE |
104 | Q_DECLARE_TYPEINFO(KSyntaxHighlighting::FoldingRegion, Q_PRIMITIVE_TYPE); |
105 | QT_END_NAMESPACE |
106 | |
107 | #endif |
108 | |