1 files changed, 220 insertions, 0 deletions
diff --git a/src/qdoc/qdoc/src/qdoc/atom.h b/src/qdoc/qdoc/src/qdoc/atom.h
new file mode 100644
index 000000000..dbfd0c4a9
--- /dev/null
+++ b/src/qdoc/qdoc/src/qdoc/atom.h
@@ -0,0 +1,220 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef ATOM_H
+#define ATOM_H
+
+#include "node.h"
+
+#include <QtCore/qdebug.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class Tree;
+class LinkAtom;
+
+class Atom
+{
+public:
+    enum AtomType {
+        AnnotatedList,
+        AutoLink,
+        BaseName,
+        BR,
+        BriefLeft,
+        BriefRight,
+        C,
+        CaptionLeft,
+        CaptionRight,
+        Code,
+        CodeBad,
+        CodeQuoteArgument,
+        CodeQuoteCommand,
+        ComparesLeft,
+        ComparesRight,
+        DetailsLeft,
+        DetailsRight,
+        DivLeft,
+        DivRight,
+        ExampleFileLink,
+        ExampleImageLink,
+        FootnoteLeft,
+        FootnoteRight,
+        FormatElse,
+        FormatEndif,
+        FormatIf,
+        FormattingLeft,
+        FormattingRight,
+        GeneratedList,
+        HR,
+        Image,
+        ImageText,
+        ImportantLeft,
+        ImportantRight,
+        InlineImage,
+        Keyword,
+        LegaleseLeft,
+        LegaleseRight,
+        LineBreak,
+        Link,
+        LinkNode,
+        ListLeft,
+        ListItemNumber,
+        ListTagLeft,
+        ListTagRight,
+        ListItemLeft,
+        ListItemRight,
+        ListRight,
+        NavAutoLink,
+        NavLink,
+        Nop,
+        NoteLeft,
+        NoteRight,
+        ParaLeft,
+        ParaRight,
+        Qml,
+        QuotationLeft,
+        QuotationRight,
+        RawString,
+        SectionLeft,
+        SectionRight,
+        SectionHeadingLeft,
+        SectionHeadingRight,
+        SidebarLeft,
+        SidebarRight,
+        SinceList,
+        SinceTagLeft,
+        SinceTagRight,
+        SnippetCommand,
+        SnippetIdentifier,
+        SnippetLocation,
+        String,
+        TableLeft,
+        TableRight,
+        TableHeaderLeft,
+        TableHeaderRight,
+        TableRowLeft,
+        TableRowRight,
+        TableItemLeft,
+        TableItemRight,
+        TableOfContents,
+        Target,
+        UnhandledFormat,
+        WarningLeft,
+        WarningRight,
+        UnknownCommand,
+        Last = UnknownCommand
+    };
+
+    friend class LinkAtom;
+
+    explicit Atom(AtomType type, const QString &string = "") : m_type(type), m_strs(string) { }
+
+    Atom(AtomType type, const QString &p1, const QString &p2) : m_type(type), m_strs(p1)
+    {
+        if (!p2.isEmpty())
+            m_strs << p2;
+    }
+
+    Atom(Atom *previous, AtomType type, const QString &string)
+        : m_next(previous->m_next), m_type(type), m_strs(string)
+    {
+        previous->m_next = this;
+    }
+
+    Atom(Atom *previous, AtomType type, const QString &p1, const QString &p2)
+        : m_next(previous->m_next), m_type(type), m_strs(p1)
+    {
+        if (!p2.isEmpty())
+            m_strs << p2;
+        previous->m_next = this;
+    }
+
+    virtual ~Atom() = default;
+
+    void appendChar(QChar ch) { m_strs[0] += ch; }
+    void concatenateString(const QString &string) { m_strs[0] += string; }
+    void append(const QString &string) { m_strs << string; }
+    void chopString() { m_strs[0].chop(1); }
+    void setString(const QString &string) { m_strs[0] = string; }
+    Atom *next() { return m_next; }
+    void setNext(Atom *newNext) { m_next = newNext; }
+
+    [[nodiscard]] const Atom *next() const { return m_next; }
+    [[nodiscard]] const Atom *next(AtomType t) const;
+    [[nodiscard]] const Atom *next(AtomType t, const QString &s) const;
+    [[nodiscard]] AtomType type() const { return m_type; }
+    [[nodiscard]] QString typeString() const;
+    [[nodiscard]] const QString &string() const { return m_strs[0]; }
+    [[nodiscard]] const QString &string(int i) const { return m_strs[i]; }
+    [[nodiscard]] qsizetype count() const { return m_strs.size(); }
+    [[nodiscard]] QString linkText() const;
+    [[nodiscard]] const QStringList &strings() const { return m_strs; }
+
+    [[nodiscard]] virtual bool isLinkAtom() const { return false; }
+    virtual Node::Genus genus() { return Node::DontCare; }
+    virtual Tree *domain() { return nullptr; }
+    virtual void resolveSquareBracketParams() {}
+
+protected:
+    Atom *m_next = nullptr;
+    AtomType m_type {};
+    QStringList m_strs {};
+};
+
+class LinkAtom : public Atom
+{
+public:
+    LinkAtom(const QString &p1, const QString &p2, Location location = Location());
+    LinkAtom(const LinkAtom &t);
+    LinkAtom(Atom *previous, const LinkAtom &t);
+    ~LinkAtom() override = default;
+
+    [[nodiscard]] bool isLinkAtom() const override { return true; }
+    Node::Genus genus() override
+    {
+        resolveSquareBracketParams();
+        return m_genus;
+    }
+    Tree *domain() override
+    {
+        resolveSquareBracketParams();
+        return m_domain;
+    }
+    void resolveSquareBracketParams() override;
+
+public:
+    Location location;
+
+protected:
+    bool m_resolved {};
+    Node::Genus m_genus {};
+    Tree *m_domain {};
+    QString m_squareBracketParams {};
+};
+
+#define ATOM_FORMATTING_BOLD "bold"
+#define ATOM_FORMATTING_INDEX "index"
+#define ATOM_FORMATTING_ITALIC "italic"
+#define ATOM_FORMATTING_LINK "link"
+#define ATOM_FORMATTING_PARAMETER "parameter"
+#define ATOM_FORMATTING_SPAN "span "
+#define ATOM_FORMATTING_SUBSCRIPT "subscript"
+#define ATOM_FORMATTING_SUPERSCRIPT "superscript"
+#define ATOM_FORMATTING_TELETYPE "teletype"
+#define ATOM_FORMATTING_UICONTROL "uicontrol"
+#define ATOM_FORMATTING_UNDERLINE "underline"
+
+#define ATOM_LIST_BULLET "bullet"
+#define ATOM_LIST_TAG "tag"
+#define ATOM_LIST_VALUE "value"
+#define ATOM_LIST_LOWERALPHA "loweralpha"
+#define ATOM_LIST_LOWERROMAN "lowerroman"
+#define ATOM_LIST_NUMERIC "numeric"
+#define ATOM_LIST_UPPERALPHA "upperalpha"
+#define ATOM_LIST_UPPERROMAN "upperroman"
+
+QT_END_NAMESPACE
+
+#endif