Boolean.cs

using System.Runtime.InteropServices;
using System.Runtime.Versioning;

namespace System
{
    [Serializable]
    [ComVisible(true)]
    [__DynamicallyInvokable]
    public struct Boolean : IComparable, IConvertible, IComparable<bool>, IEquatable<bool>
    {
        private bool m_value;

        internal const int True = 1;

        internal const int False = 0;

        internal const string TrueLiteral = "True";

        internal const string FalseLiteral = "False";

        [__DynamicallyInvokable]
        public static readonly string TrueString = "True";

        [__DynamicallyInvokable]
        public static readonly string FalseString = "False";

        [__DynamicallyInvokable]
        public override int GetHashCode()
        {
            if (!this)
            {
                return 0;
            }
            return 1;
        }

        [__DynamicallyInvokable]
        public override string ToString()
        {
            if (!this)
            {
                return "False";
            }
            return "True";
        }

        public string ToString(IFormatProvider provider)
        {
            if (!this)
            {
                return "False";
            }
            return "True";
        }

        [__DynamicallyInvokable]
        public override bool Equals(object obj)
        {
            if (!(obj is bool))
            {
                return false;
            }
            return this == (bool)obj;
        }

        [NonVersionable]
        [__DynamicallyInvokable]
        public bool Equals(bool obj)
        {
            return this == obj;
        }

        public int CompareTo(object obj)
        {
            if (obj == null)
            {
                return 1;
            }
            if (!(obj is bool))
            {
                throw new ArgumentException(Environment.GetResourceString("Arg_MustBeBoolean"));
            }
            if (this == (bool)obj)
            {
                return 0;
            }
            if (!this)
            {
                return -1;
            }
            return 1;
        }

        [__DynamicallyInvokable]
        public int CompareTo(bool value)
        {
            if (this == value)
            {
                return 0;
            }
            if (!this)
            {
                return -1;
            }
            return 1;
        }

        [__DynamicallyInvokable]
        public static bool Parse(string value)
        {
            if (value == null)
            {
                throw new ArgumentNullException("value");
            }
            bool result = false;
            if (!TryParse(value, out result))
            {
                throw new FormatException(Environment.GetResourceString("Format_BadBoolean"));
            }
            return result;
        }

        [__DynamicallyInvokable]
        public static bool TryParse(string value, out bool result)
        {
            result = false;
            if (value == null)
            {
                return false;
            }
            if ("True".Equals(value, StringComparison.OrdinalIgnoreCase))
            {
                result = true;
                return true;
            }
            if ("False".Equals(value, StringComparison.OrdinalIgnoreCase))
            {
                result = false;
                return true;
            }
            value = TrimWhiteSpaceAndNull(value);
            if ("True".Equals(value, StringComparison.OrdinalIgnoreCase))
            {
                result = true;
                return true;
            }
            if ("False".Equals(value, StringComparison.OrdinalIgnoreCase))
            {
                result = false;
                return true;
            }
            return false;
        }

        private static string TrimWhiteSpaceAndNull(string value)
        {
            int i = 0;
            int num = value.Length - 1;
            char c;
            for (c = '\0'; i < value.Length && (char.IsWhiteSpace(value[i]) || value[i] == c); i++)
            {
            }
            while (num >= i && (char.IsWhiteSpace(value[num]) || value[num] == c))
            {
                num--;
            }
            return value.Substring(i, num - i + 1);
        }

        public TypeCode GetTypeCode()
        {
            return TypeCode.Boolean;
        }

        [__DynamicallyInvokable]
        bool IConvertible.ToBoolean(IFormatProvider provider)
        {
            return this;
        }

        [__DynamicallyInvokable]
        char IConvertible.ToChar(IFormatProvider provider)
        {
            throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "Boolean", "Char"));
        }

        [__DynamicallyInvokable]
        sbyte IConvertible.ToSByte(IFormatProvider provider)
        {
            return Convert.ToSByte(this);
        }

        [__DynamicallyInvokable]
        byte IConvertible.ToByte(IFormatProvider provider)
        {
            return Convert.ToByte(this);
        }

        [__DynamicallyInvokable]
        short IConvertible.ToInt16(IFormatProvider provider)
        {
            return Convert.ToInt16(this);
        }

        [__DynamicallyInvokable]
        ushort IConvertible.ToUInt16(IFormatProvider provider)
        {
            return Convert.ToUInt16(this);
        }

        [__DynamicallyInvokable]
        int IConvertible.ToInt32(IFormatProvider provider)
        {
            return Convert.ToInt32(this);
        }

        [__DynamicallyInvokable]
        uint IConvertible.ToUInt32(IFormatProvider provider)
        {
            return Convert.ToUInt32(this);
        }

        [__DynamicallyInvokable]
        long IConvertible.ToInt64(IFormatProvider provider)
        {
            return Convert.ToInt64(this);
        }

        [__DynamicallyInvokable]
        ulong IConvertible.ToUInt64(IFormatProvider provider)
        {
            return Convert.ToUInt64(this);
        }

        [__DynamicallyInvokable]
        float IConvertible.ToSingle(IFormatProvider provider)
        {
            return Convert.ToSingle(this);
        }

        [__DynamicallyInvokable]
        double IConvertible.ToDouble(IFormatProvider provider)
        {
            return Convert.ToDouble(this);
        }

        [__DynamicallyInvokable]
        decimal IConvertible.ToDecimal(IFormatProvider provider)
        {
            return Convert.ToDecimal(this);
        }

        [__DynamicallyInvokable]
        DateTime IConvertible.ToDateTime(IFormatProvider provider)
        {
            throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "Boolean", "DateTime"));
        }

        [__DynamicallyInvokable]
        object IConvertible.ToType(Type type, IFormatProvider provider)
        {
            return Convert.DefaultToType(this, type, provider);
        }
    }
}