/****************************************************************************
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**
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** Copyright (C) 2019 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt VS Tools.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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using System.Collections.Generic;
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using System.Text;
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namespace QtVsTools.SyntaxAnalysis
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{
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////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// CharClassRange ( -> CharClassSet.Element -> CharClass -> RegExpr )
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///
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////////////////////////////////////////////////////////////////////////////////////////////////
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/// <summary>
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/// Represents an elementary character class defined by a range of characters
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/// </summary>
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///
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public partial class CharClassRange : CharClassSet.Element
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{
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public CharClassLiteral LowerBound { get; set; }
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public CharClassLiteral UpperBound { get; set; }
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protected override IEnumerable<RegExpr> OnRender(RegExpr defaultTokenWs, RegExpr parent,
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StringBuilder pattern, ref RenderMode mode, Stack<Token> tokenStack)
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{
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base.OnRender(defaultTokenWs, parent, pattern, ref mode, tokenStack);
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if (parent == null || !(parent is CharClass))
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pattern.Append("[");
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return Items(LowerBound, UpperBound);
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}
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protected override void OnRenderNext(RegExpr defaultTokenWs, RegExpr parent,
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StringBuilder pattern, ref RenderMode mode, Stack<Token> tokenStack)
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{
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base.OnRenderNext(defaultTokenWs, parent, pattern, ref mode, tokenStack);
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pattern.Append("-");
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}
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protected override void OnRenderEnd(RegExpr defaultTokenWs, RegExpr parent,
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StringBuilder pattern, ref RenderMode mode, Stack<Token> tokenStack)
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{
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base.OnRenderEnd(defaultTokenWs, parent, pattern, ref mode, tokenStack);
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if (parent == null || !(parent is CharClass))
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pattern.Append("]");
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}
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}
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public abstract partial class CharClass : RegExpr
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{
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public static CharClassRange CharRange(string lBound, string uBound)
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{
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return CharRange(CharLiteral(lBound), CharLiteral(uBound));
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}
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public static CharClassRange CharRange(CharClassLiteral lBound, CharClassLiteral uBound)
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{
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return new CharClassRange
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{
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LowerBound = lBound,
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UpperBound = uBound
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};
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}
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public partial class CharExprBuilder
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{
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public CharClassRange this[char lBound, char uBound]
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{ get { return CharRange(lBound.ToString(), uBound.ToString()); } }
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}
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}
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}
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