PKHeX/PKHeX.Core/Legality/Verifiers/Verifier.cs

namespace PKHeX.Core
{
    /// <summary>
    /// Verification that provides new <see cref="CheckResult"/> values for a <see cref="LegalityAnalysis"/>.
    /// </summary>
    public abstract class Verifier
    {
        /// <summary>
        /// <see cref="CheckResult"/> category.
        /// </summary>
        protected abstract CheckIdentifier Identifier { get; }

        /// <summary>
        /// Processes the <see cref="data"/> and adds any relevant <see cref="CheckResult"/> values to the <see cref="LegalityAnalysis.Parse"/>.
        /// </summary>
        /// <param name="data">Analysis data to process</param>
        public abstract void Verify(LegalityAnalysis data);

        protected CheckResult GetInvalid(string msg) => Get(msg, Severity.Invalid);
        protected CheckResult GetValid(string msg) => Get(msg, Severity.Valid);
        protected CheckResult Get(string msg, Severity s) => new CheckResult(s, msg, Identifier);

        protected static CheckResult GetInvalid(string msg, CheckIdentifier c) => Get(msg, Severity.Invalid, c);
        protected static CheckResult GetValid(string msg, CheckIdentifier c) => Get(msg, Severity.Valid, c);
        protected static CheckResult Get(string msg, Severity s, CheckIdentifier c) => new CheckResult(s, msg, c);
    }
}