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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Qt User Interface *
* *
* Copyright (c) 1999-2025, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* This file is modified from the KDE syntax-highlighting framework, *
* which is copyright (C) 2016 Volker Krause <vkrause@kde.org> *
* and is distributed under the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* As an exception, when this program is distributed through (i) the *
* App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or *
* (iii) Google Play by Google Inc., then that store may impose any *
* digital rights management, device limits and/or redistribution *
* restrictions that are required by its terms of service. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
/**
* \file syntax/context.h
* \brief Part of the private syntax highlighting framework that is shared
* between Regina's different graphical user interfaces.
*
* The syntax highlighting headers are private in the following sense: they are
* not installed along with Regina's other headers, they do not appear in the
* API documentation, and the syntax highlighting API is subject to change
* without notice between different versions of Regina.
*/
#ifndef __SYNTAX_CONTEXT_H
#ifndef __DOXYGEN
#define __SYNTAX_CONTEXT_H
#endif
#include "regina-core.h"
#include "syntax/rule.h"
#include "syntax/contextswitch.h"
#include "syntax/definition.h"
#include "syntax/definitionref.h"
#include <libxml/xmlreader.h>
namespace regina::syntax {
class Context
{
public:
Context();
~Context();
Definition definition() const;
void setDefinition(const DefinitionRef &def);
const std::string& name() const;
const std::string& attribute() const;
const ContextSwitch& lineEndContext() const;
const ContextSwitch& lineEmptyContext() const;
bool fallthrough() const;
const ContextSwitch& fallthroughContext() const;
const std::vector<Rule::Ptr>& rules() const;
/** Attempts to find the format named @p name in the
* enclosing definition, or the source definition of any
* included rule.
*/
Format formatByName(const std::string& name) const;
void load(xmlTextReaderPtr reader);
void resolveContexts();
void resolveIncludes();
// Make this class non-copyable.
Context(const Context&) = delete;
Context& operator = (const Context&) = delete;
private:
enum ResolveState {
Unknown,
Unresolved,
Resolving,
Resolved
};
ResolveState resolveState();
DefinitionRef m_def;
std::string m_name;
std::string m_attribute;
ContextSwitch m_lineEndContext;
ContextSwitch m_lineEmptyContext;
ContextSwitch m_fallthroughContext;
std::vector<Rule::Ptr> m_rules;
ResolveState m_resolveState;
bool m_fallthrough;
};
} // namespace regina::syntax
#endif
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