UA-.NETStandard/tools/Opc.Ua.SourceGeneration.Core/DesignFile.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Opc.Ua.Schema.Model;

namespace Opc.Ua.SourceGeneration
{
    /// <summary>
    /// Model options
    /// </summary>
    public sealed record class DesignFileOptions
    {
        /// <summary>
        /// -version [v104, v105]
        /// </summary>
        public string Version { get; init; }

        /// <summary>
        /// -id [start id]
        /// </summary>
        public uint StartId { get; init; }

        /// <summary>
        /// -mv [model version]
        /// </summary>
        public string ModelVersion { get; init; }

        /// <summary>
        /// -pd [publication date]
        /// </summary>
        public string ModelPublicationDate { get; init; }

        /// <summary>
        /// -rc
        /// </summary>
        public bool ReleaseCandidate { get; init; } = true;

        /// <summary>
        /// When <c>true</c>, also emits a <c>{Namespace}NodeManager</c>
        /// (a <c>partial class</c> deriving from
        /// <c>Opc.Ua.Server.AsyncCustomNodeManager</c>) and a matching
        /// <c>{Namespace}NodeManagerFactory</c> implementing
        /// <c>Opc.Ua.Server.INodeManagerFactory</c>.
        /// <para>
        /// The generated manager exposes a
        /// <c>partial void Configure(INodeManagerBuilder builder)</c>
        /// extensibility hook that user code can implement in a sibling
        /// partial to wire callbacks via the fluent
        /// <c>Opc.Ua.Server.Fluent</c> API.
        /// </para>
        /// </summary>
        public bool GenerateNodeManager { get; init; }

        /// <summary>
        /// Optional override for the namespace of the generated
        /// <c>NodeManager</c> partial. When set, the generator emits
        /// <c>partial class {NodeManagerClassName}</c> in this namespace
        /// instead of using the design file <c>Prefix</c>. Used by the
        /// <c>[NodeManager]</c> attribute discovery path.
        /// </summary>
        public string NodeManagerNamespace { get; init; }

        /// <summary>
        /// Optional override for the class name of the generated
        /// <c>NodeManager</c> partial. Defaults to
        /// <c>{Prefix}NodeManager</c>. Used by the <c>[NodeManager]</c>
        /// attribute discovery path.
        /// </summary>
        public string NodeManagerClassName { get; init; }

        /// <summary>
        /// Whether to also emit the <c>{ClassName}Factory</c>. Defaults
        /// to <c>true</c>. Set to <c>false</c> when the consumer wants
        /// to author the factory by hand.
        /// </summary>
        public bool EmitNodeManagerFactory { get; init; } = true;
    }

    /// <summary>
    /// Collection of design files and options
    /// </summary>
    public sealed record class DesignFileCollection
    {
        /// <summary>
        /// Design files to generate code for. Typically a single file.
        /// </summary>
        public IReadOnlyList<string> Targets { get; init; } = [];

        /// <summary>
        /// Design files referenced by <see cref="Targets"/> but not
        /// generated. They provide node resolution only (e.g. when a
        /// target imports types from another companion specification).
        /// </summary>
        public IReadOnlyList<string> Dependencies { get; init; } = [];

        /// <summary>
        /// Optional identifier file if not same name and side
        /// by side with design files
        /// </summary>
        public string IdentifierFilePath { get; init; }

        /// <summary>
        /// Design file options
        /// </summary>
        public DesignFileOptions Options { get; init; }
    }

    /// <summary>
    /// Validate model design
    /// </summary>
    internal static class DesignFileExtensions
    {
        /// <summary>
        /// Get design file groups for processing. A group is a set of design files
        /// in the same common folder with an optional csv file included. Each group
        /// carries the same <see cref="DesignFileCollection.Dependencies"/> so that
        /// cross-model references resolve for every target.
        /// </summary>
        /// <exception cref="ArgumentNullException"><paramref name="collection"/>
        /// is <c>null</c>.</exception>
        public static IEnumerable<DesignFileCollection> Group(
            this DesignFileCollection collection,
            List<string> identifierFiles = null)
        {
            if (collection is null)
            {
                throw new ArgumentNullException(nameof(collection));
            }
            var idFiles = new Dictionary<string, List<string>>();
            if (identifierFiles != null)
            {
                foreach (string idFile in identifierFiles)
                {
                    string dir = Path.GetDirectoryName(idFile);
                    if (!idFiles.TryGetValue(dir, out List<string> value))
                    {
                        value = [];
                        idFiles[dir] = value;
                    }
                    value.Add(idFile);
                }
            }
            IReadOnlyList<string> dependencies = collection.Dependencies ?? [];
            return collection.Targets
                .GroupBy(Path.GetDirectoryName)
                .Select(g => new DesignFileCollection
                {
                    Targets = [.. g],
                    Dependencies = dependencies,
                    IdentifierFilePath = idFiles.TryGetValue(g.Key, out List<string> files) ?
                        files.FirstOrDefault() : collection.IdentifierFilePath,
                    Options = collection.Options
                });
        }

        /// <summary>
        /// Validates the model design files
        /// </summary>
        public static IModelDesign OpenModelDesign(
            this IFileSystem fileSystem,
            DesignFileCollection designFiles,
            IReadOnlyList<string> exclusions,
            ITelemetryContext telemetry,
            bool useAllowSubtypes = true)
        {
            return OpenModelDesign(
                fileSystem,
                designFiles,
                exclusions,
                telemetry,
                useAllowSubtypes,
                referencedDependencies: null);
        }

        /// <summary>
        /// Validates the model design files, optionally importing
        /// per-namespace model dependency payloads from referenced
        /// assemblies before validation. The payloads pre-populate the
        /// validator's node table so downstream models can resolve
        /// upstream types without an explicit <c>AdditionalFiles</c>
        /// entry for them.
        /// </summary>
        public static IModelDesign OpenModelDesign(
            this IFileSystem fileSystem,
            DesignFileCollection designFiles,
            IReadOnlyList<string> exclusions,
            ITelemetryContext telemetry,
            bool useAllowSubtypes,
            IReadOnlyDictionary<string, Dependency.ModelDependencyV1> referencedDependencies)
        {
            DesignFileOptions options = designFiles.Options ?? new DesignFileOptions();
            var validator = new ModelDesignValidator(
                fileSystem,
                options.StartId,
                exclusions,
                telemetry,
                SpecificationVersion.V105)
            {
                UseAllowSubtypes = useAllowSubtypes,
                ReleaseCandidate = options.ReleaseCandidate,
                ModelVersion = options.ModelVersion,
                ModelPublicationDate = options.ModelPublicationDate
            };

            if (referencedDependencies != null)
            {
                foreach (KeyValuePair<string, Dependency.ModelDependencyV1> entry in referencedDependencies)
                {
                    if (entry.Value == null)
                    {
                        continue;
                    }
                    validator.ImportDependency(entry.Value, prefix: null, name: null);
                }
            }

            string identifierFilePath = designFiles.IdentifierFilePath;
            validator.Validate(
                designFiles.Targets,
                designFiles.Dependencies ?? [],
                identifierFilePath);
            return validator;
        }
    }
}