// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

namespace System.Globalization
{
    /// <summary>
    /// Contains valid formats for Numbers recognized by the Number
    /// class' parsing code.
    /// </summary>
    [Flags]
    public enum NumberStyles
    {
        None = 0x00000000,

        /// <summary>
        /// Bit flag indicating that leading whitespace is allowed. Character values
        /// 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, and 0x0020 are considered to be
        /// whitespace.
        /// </summary>
        AllowLeadingWhite = 0x00000001,

        /// <summary>
        /// Bitflag indicating trailing whitespace is allowed.
        /// </summary>
        AllowTrailingWhite = 0x00000002,

        /// <summary>
        /// Can the number start with a sign char specified by
        /// NumberFormatInfo.PositiveSign and NumberFormatInfo.NegativeSign
        /// </summary>
        AllowLeadingSign = 0x00000004,

        /// <summary>
        /// Allow the number to end with a sign char
        /// </summary>
        AllowTrailingSign = 0x00000008,

        /// <summary>
        /// Allow the number to be enclosed in parens
        /// </summary>
        AllowParentheses = 0x00000010,

        AllowDecimalPoint = 0x00000020,

        AllowThousands = 0x00000040,

        AllowExponent = 0x00000080,

        AllowCurrencySymbol = 0x00000100,

        AllowHexSpecifier = 0x00000200,

        Integer = AllowLeadingWhite | AllowTrailingWhite | AllowLeadingSign,

        HexNumber = AllowLeadingWhite | AllowTrailingWhite | AllowHexSpecifier,

        Number = AllowLeadingWhite | AllowTrailingWhite | AllowLeadingSign | AllowTrailingSign |
                   AllowDecimalPoint | AllowThousands,

        Float = AllowLeadingWhite | AllowTrailingWhite | AllowLeadingSign |
                   AllowDecimalPoint | AllowExponent,

        Currency = AllowLeadingWhite | AllowTrailingWhite | AllowLeadingSign | AllowTrailingSign |
                   AllowParentheses | AllowDecimalPoint | AllowThousands | AllowCurrencySymbol,

        Any = AllowLeadingWhite | AllowTrailingWhite | AllowLeadingSign | AllowTrailingSign |
                   AllowParentheses | AllowDecimalPoint | AllowThousands | AllowCurrencySymbol | AllowExponent,
    }
}