using System.Collections.Generic; using System.Diagnostics.CodeAnalysis; using System.Runtime.CompilerServices; namespace System.Collections { internal static class ThrowHelper { [System.Diagnostics.CodeAnalysis.DoesNotReturn] internal static void ThrowKeyNotFound<TKey>(TKey key) { throw new KeyNotFoundException(System.SR.Format(System.SR.Arg_KeyNotFoundWithKey, key)); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] internal static void ThrowDuplicateKey<TKey>(TKey key) { throw new ArgumentException(System.SR.Format(System.SR.Argument_AddingDuplicate, key), "key"); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] internal static void ThrowConcurrentOperation() { throw new InvalidOperationException(System.SR.InvalidOperation_ConcurrentOperationsNotSupported); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] internal static void ThrowIndexArgumentOutOfRange() { throw new ArgumentOutOfRangeException("index"); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] internal static void ThrowVersionCheckFailed() { throw new InvalidOperationException(System.SR.InvalidOperation_EnumFailedVersion); } public static void ThrowIfNegative(int value, [System.Runtime.CompilerServices.CallerArgumentExpression("value")] string paramName = null) { if (value < 0) ThrowNegative(value, paramName); } public static void ThrowIfGreaterThan<T>(T value, T other, [System.Runtime.CompilerServices.CallerArgumentExpression("value")] string paramName = null) where T : IComparable<T> { if (((IComparable<T>)value).CompareTo(other) > 0) ThrowGreater(value, other, paramName); } public static void ThrowIfLessThan<T>(T value, T other, [System.Runtime.CompilerServices.CallerArgumentExpression("value")] string paramName = null) where T : IComparable<T> { if (((IComparable<T>)value).CompareTo(other) < 0) ThrowLess(value, other, paramName); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] private static void ThrowNull(string paramName) { throw new ArgumentNullException(paramName); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] private static void ThrowNegative(int value, string paramName) { throw new ArgumentOutOfRangeException(paramName, value, System.SR.Format(System.SR.ArgumentOutOfRange_Generic_MustBeNonNegative, paramName, value)); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] private static void ThrowGreater<T>(T value, T other, string paramName) { throw new ArgumentOutOfRangeException(paramName, value, System.SR.Format(System.SR.ArgumentOutOfRange_Generic_MustBeLessOrEqual, paramName, value, other)); } [System.Diagnostics.CodeAnalysis.DoesNotReturn] private static void ThrowLess<T>(T value, T other, string paramName) { throw new ArgumentOutOfRangeException(paramName, value, System.SR.Format(System.SR.ArgumentOutOfRange_Generic_MustBeGreaterOrEqual, paramName, value, other)); } } }