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Diffstat (limited to 'src/mscorlib/shared/System/Runtime/CompilerServices/FormattableStringFactory.cs')
-rw-r--r-- | src/mscorlib/shared/System/Runtime/CompilerServices/FormattableStringFactory.cs | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/CompilerServices/FormattableStringFactory.cs b/src/mscorlib/shared/System/Runtime/CompilerServices/FormattableStringFactory.cs new file mode 100644 index 0000000000..23d03860ed --- /dev/null +++ b/src/mscorlib/shared/System/Runtime/CompilerServices/FormattableStringFactory.cs @@ -0,0 +1,58 @@ +// 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. + +/*============================================================ +** +** +** +** Purpose: implementation of the FormattableStringFactory +** class. +** +===========================================================*/ + +namespace System.Runtime.CompilerServices +{ + /// <summary> + /// A factory type used by compilers to create instances of the type <see cref="FormattableString"/>. + /// </summary> + public static class FormattableStringFactory + { + /// <summary> + /// Create a <see cref="FormattableString"/> from a composite format string and object + /// array containing zero or more objects to format. + /// </summary> + public static FormattableString Create(string format, params object[] arguments) + { + if (format == null) + { + throw new ArgumentNullException(nameof(format)); + } + + if (arguments == null) + { + throw new ArgumentNullException(nameof(arguments)); + } + + return new ConcreteFormattableString(format, arguments); + } + + private sealed class ConcreteFormattableString : FormattableString + { + private readonly string _format; + private readonly object[] _arguments; + + internal ConcreteFormattableString(string format, object[] arguments) + { + _format = format; + _arguments = arguments; + } + + public override string Format { get { return _format; } } + public override object[] GetArguments() { return _arguments; } + public override int ArgumentCount { get { return _arguments.Length; } } + public override object GetArgument(int index) { return _arguments[index]; } + public override string ToString(IFormatProvider formatProvider) { return string.Format(formatProvider, _format, _arguments); } + } + } +} |