92 lines
2.8 KiB
C#
92 lines
2.8 KiB
C#
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using System.Text.RegularExpressions;
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using Mono.Cecil;
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using UnrealSharpWeaver.Utilities;
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using PropertyUtilities = UnrealSharpWeaver.Utilities.PropertyUtilities;
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namespace UnrealSharpWeaver.MetaData;
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public partial class StructMetaData : TypeReferenceMetadata
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{
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public List<PropertyMetaData> Fields { get; set; }
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public StructFlags StructFlags { get; set; }
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// Non-serialized for JSON
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public readonly bool IsBlittableStruct;
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// End non-serialized
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public StructMetaData(TypeDefinition structDefinition) : base(structDefinition, TypeDefinitionUtilities.UStructAttribute)
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{
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Fields = new List<PropertyMetaData>();
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IsBlittableStruct = true;
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var backingFieldRegex = BackingFieldRegex();
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foreach (var field in structDefinition.Fields)
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{
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if (field.IsStatic)
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{
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continue;
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}
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if (!field.IsUProperty())
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{
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// Struct is not blittable if it has non-UProperty fields
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IsBlittableStruct = false;
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}
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PropertyMetaData property = new PropertyMetaData(field);
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// If we match against a backing property field use the property name instead.
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var backingFieldMatch = backingFieldRegex.Match(field.Name);
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if (backingFieldMatch.Success)
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{
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string propertyName = backingFieldMatch.Groups[1].Value;
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property.Name = propertyName;
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}
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if (property.IsInstancedReference)
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{
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StructFlags |= StructFlags.HasInstancedReference;
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}
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Fields.Add(property);
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}
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bool isPlainOldData = true;
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foreach (var prop in Fields)
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{
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if (!prop.PropertyDataType.IsBlittable)
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{
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IsBlittableStruct = false;
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}
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if (!prop.PropertyDataType.IsPlainOldData)
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{
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isPlainOldData = false;
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}
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}
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StructFlags |= (StructFlags) GetFlags(structDefinition, "StructFlagsMapAttribute");
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if (isPlainOldData)
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{
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StructFlags |= StructFlags.IsPlainOldData;
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StructFlags |= StructFlags.NoDestructor;
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StructFlags |= StructFlags.ZeroConstructor;
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}
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if (!IsBlittableStruct)
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{
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return;
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}
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CustomAttribute structFlagsAttribute = new CustomAttribute(WeaverImporter.Instance.BlittableTypeConstructor);
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structDefinition.CustomAttributes.Add(structFlagsAttribute);
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TryAddMetaData("BlueprintType", true);
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}
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[GeneratedRegex("<([a-zA-Z$_][a-zA-Z0-9$_]*)>k__BackingField")]
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private static partial Regex BackingFieldRegex();
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}
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