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/*
* Copyright (C) 2014 Aaron Seigo <aseigo@kde.org>
*
* 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.
*
* 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, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "state.h"
#include <QStringList>
#include <QTime>
#include <QVector>
#include <functional>
class Syntax
{
public:
typedef QVector<Syntax> List;
enum Interactivity
{
NotInteractive = 0,
EventDriven
};
Syntax();
Syntax(const QString &keyword, const QString &helpText = QString(),
std::function<bool(const QStringList &, State &)> lambda = std::function<bool(const QStringList &, State &)>(), Interactivity interactivity = NotInteractive);
QString keyword;
QString help;
Interactivity interactivity;
std::function<bool(const QStringList &, State &)> lambda;
std::function<QStringList(const QStringList &, const QString &, State &state)> completer;
QVector<Syntax> children;
};
class SyntaxTree
{
public:
typedef std::pair<const Syntax *, QStringList> Command;
static SyntaxTree *self();
int registerSyntax(std::function<Syntax::List()> f);
Syntax::List syntax() const;
Command match(const QStringList &commands) const;
Syntax::List nearestSyntax(const QStringList &words, const QString &fragment) const;
State &state();
bool run(const QStringList &commands);
static QStringList tokenize(const QString &text);
struct Options {
QStringList positionalArguments;
QMap<QString, QStringList> options;
};
static Options parseOptions(const QStringList &text);
private:
SyntaxTree();
Syntax::List m_syntax;
State m_state;
QTime m_timeElapsed;
static SyntaxTree *s_module;
};
#define REGISTER_SYNTAX(name) static const int theTrickFor##name = SyntaxTree::self()->registerSyntax(&name::syntax);
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