CSCodeSnippets/exenum.snippet at master · munyabe/CSCodeSnippets · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2010/CodeSnippet">
  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>列挙体の拡張メソッドパターン</Title>
      <SnippetTypes>
        <SnippetType>Expansion</SnippetType>
      </SnippetTypes>
      <Shortcut>exenum</Shortcut>
    </Header>
    <Snippet>
      <Declarations>
        <Literal>
          <ID>enumName</ID>
          <ToolTip>拡張対象の列挙体名</ToolTip>
          <Default>EnumName</Default>
        </Literal>
        <Literal>
          <ID>returnType</ID>
          <ToolTip>拡張メソッドの戻り値のとなるプロパティの型</ToolTip>
          <Default>string</Default>
        </Literal>
        <Literal>
          <ID>propertyName</ID>
          <ToolTip>拡張メソッドの戻り値のとなるプロパティ名</ToolTip>
          <Default>PropertyName</Default>
        </Literal>
      </Declarations>
      <Code Language="csharp" Kind="type decl">
        <![CDATA[    /// <summary>
        /// <see cref="$enumName$"/>の拡張メソッドを定義するクラスです。
        /// </summary>
        public static class $enumName$Extensions
        {
            private class $enumName$Info
            {
                public $returnType$ $propertyName$ { get; private set; }

                public $enumName$Info($returnType$ property)
                {
                    $propertyName$ = property;
                }
            }

            private static Dictionary<$enumName$, $enumName$Info> _infoes = new Dictionary<$enumName$, $enumName$Info>();

            [SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
            static $enumName$Extensions()
            {
                // TODO : Write your implementation
                // _infoes.Add($enumName$., new $enumName$Info());
            }

            public static $returnType$ Get$propertyName$(this $enumName$ source)
            {
                return GetInfo(source).$propertyName$;
            }

            private static $enumName$Info GetInfo($enumName$ source)
            {
                $enumName$Info info;
                if (_infoes.TryGetValue(source, out info) && info != null)
                {
                    return info;
                }
                else
                {
                    throw new InvalidOperationException(string.Format("[{0}] is not supported.", source));
                }
            }
        }]]>
      </Code>
    </Snippet>
  </CodeSnippet>
</CodeSnippets>