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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Microsoft Public License. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Microsoft Public License, please send an email to
* ironruby@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Microsoft Public License.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System;
using IronRuby.Runtime;
using System.Runtime.InteropServices;
using Microsoft.Scripting.Runtime;
namespace IronRuby.Builtins {
[RubyClass(Extends = typeof(char), Restrictions = ModuleRestrictions.None)]
[Includes(typeof(ClrString), typeof(Enumerable), typeof(Comparable))]
public static class CharOps {
private static Exception/*!*/ EmptyError(string/*!*/ argType) {
return RubyExceptions.CreateArgumentError(String.Format("cannot convert an empty {0} to System::Char", argType));
}
[RubyConstructor]
public static char Create(RubyClass/*!*/ self, char c) {
return c;
}
[RubyConstructor]
public static char Create(RubyClass/*!*/ self, [NotNull]char[]/*!*/ chars) {
if (chars.Length == 0) {
throw EmptyError("System::Char[]");
}
return chars[0];
}
[RubyConstructor]
public static char Create(RubyClass/*!*/ self, [NotNull]string/*!*/ str) {
if (str.Length == 0) {
throw EmptyError("string");
}
return str[0];
}
[RubyConstructor]
public static char Create(RubyClass/*!*/ self, [DefaultProtocol]MutableString/*!*/ str) {
if (str.IsEmpty) {
throw EmptyError("string");
}
return str.GetChar(0);
}
}
}
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