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// <copyright company="Apache" file="IKeywordAttribute.cs">
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namespace Lucene.Net.Analysis.TokenAttributes
{
    using System.Diagnostics.CodeAnalysis;

    /// <summary>
    /// The contract for attributes that can be used to make a token as a keyword. Keyword
    /// aware <see cref="TokenStream"/>s can decide to modify a token
    /// based on the return value of <see cref="IsKeyword"/>, if the token
    /// is modified. Stemming filters for instance can use this attribute
    /// to conditionally skip a term if <see cref="IsKeyword"/> returns <c>true</c>.
    /// </summary>
    [SuppressMessage("Microsoft.Naming", "CA1711:IdentifiersShouldNotHaveIncorrectSuffix",
        Justification = "The class was called Attribute in Java. It would be fun to call it Annotation. However, " +
        "its probably best to try to honor the correlating names when possible.")]
    public interface IKeywordAttribute
    {
        /// <summary>
        /// Gets or sets a value indicating whether this instance is keyword.
        /// </summary>
        /// <value>
        ///    <c>true</c> if this instance is keyword; otherwise, <c>false</c>.
        /// </value>
        bool IsKeyword { get; set; }
    }
}