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/****************************************************************************
**
** Copyright (C) Filippo Cucchetto <filippocucchetto@gmail.com>
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "sourcecodestream.h"
#include <QString>
namespace Nim {
class NimLexer
{
public:
enum State {
Default = -1,
MultiLineString = 0,
MultiLineComment = 1
};
struct TokenType {
enum Type {
Keyword = 0,
Identifier,
Comment,
Documentation,
StringLiteral,
MultiLineStringLiteral,
Operator,
Number,
EndOfText
};
};
struct Token {
Token()
: begin(0)
, length(0)
, type(TokenType::EndOfText)
{}
Token(int b, int l, TokenType::Type t)
: begin(b), length(l), type(t)
{}
int begin;
int length;
TokenType::Type type;
};
NimLexer(const QChar *text,
int length,
State state = State::Default );
Token next();
State state() const
{
return m_state;
}
private:
Token onDefaultState();
Token onMultiLineStringState();
Token onMultiLineCommentState();
bool isSkipChar();
bool isOperator();
Token readOperator();
bool matchCommentStart();
Token readComment();
bool matchMultiLineCommentStart();
bool matchMultiLineCommentEnd();
Token readMultiLineComment(bool moveForward);
bool matchDocumentationStart();
Token readDocumentation();
bool matchNumber();
Token readNumber();
bool matchIdentifierOrKeywordStart();
Token readIdentifierOrKeyword();
bool matchStringLiteralStart();
Token readStringLiteral();
bool matchMultiLineStringLiteralStart();
Token readMultiLineStringLiteral(bool moveForward = true);
State m_state;
SourceCodeStream m_stream;
};
}
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