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VisualBasicFormat.cs

#region Copyright © 2001-2003 Jean-Claude Manoli [jc@manoli.net]
/*
 * This software is provided 'as-is', without any express or implied warranty.
 * In no event will the author(s) be held liable for any damages arising from
 * the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 * 
 *   1. The origin of this software must not be misrepresented; you must not
 *      claim that you wrote the original software. If you use this software
 *      in a product, an acknowledgment in the product documentation would be
 *      appreciated but is not required.
 * 
 *   2. Altered source versions must be plainly marked as such, and must not
 *      be misrepresented as being the original software.
 * 
 *   3. This notice may not be removed or altered from any source distribution.
 */
#endregion

namespace Nop.Services.Html.CodeFormatter;

/// 
/// Generates color-coded HTML 4.01 from Visual Basic source code.
/// 
public partial class VisualBasicFormat : CodeFormat
{
    /// 
    /// Determines if the language is case sensitive.
    /// 
    /// Always true, since VB is not case sensitive.
    public override bool CaseSensitive => false;

    /// 
    /// Regular expression string to match comments (' and REM). 
    /// 
    protected override string CommentRegex => @"(?:'|REM\s).*?(?=\r|\n)";

    /// 
    /// Regular expression string to match string and character literals. 
    /// 
    protected override string StringRegex => @"""""|"".*?""";

    /// 
    /// The list of VB keywords.
    /// 
    protected override string Keywords => "AddHandler AddressOf AndAlso Alias And Ansi As Assembly "
                                          + "Auto Boolean ByRef Byte ByVal Call Case Catch "
                                          + "CBool CByte CChar CDate CDec CDbl Char CInt "
                                          + "Class CLng CObj Const CShort CSng CStr CType "
                                          + "Date Decimal Declare Default Delegate Dim DirectCast Do "
                                          + "Double Each Else ElseIf End EndIf Enum Erase Error "
                                          + "Event Exit False Finally For Friend Function Get "
                                          + "GetType Global GoSub GoTo Handles If Implements Imports In Inherits "
                                          + "Integer Interface Is Let Lib Like Long Loop "
                                          + "Me Mod Module MustInherit MustOverride MyBase MyClass Namespace "
                                          + "Narrowing New Next Not Nothing NotInheritable NotOverridable Object On "
                                          + "Operator Option Optional Or OrElse Overloads Overridable Overrides ParamArray "
                                          + "Preserve Private Property Protected Public RaiseEvent ReadOnly ReDim "
                                          + "REM RemoveHandler Resume Return Select Set Shadows Shared "
                                          + "Short Single Static Step Stop String Structure Sub "
                                          + "SyncLock Then Throw To True Try TryCast TypeOf Unicode "
                                          + "Until Variant Wend When While With Widening WithEvents WriteOnly Xor";

    /// 
    /// The list of VB preprocessors.
    /// 
    protected override string Preprocessors => @"#\s*Const #\s*If #\s*Else #\s*ElseIf #\s*End\s+If "
                                               + @"#\s*ExternalSource #\s*End\s+ExternalSource "
                                               + @"#\s*Region #\s*End\s+Region";
}