using Mono.Cecil; using Mono.Cecil.Cil; using StardewModdingAPI.Framework.ModLoading.Framework; namespace StardewModdingAPI.Framework.ModLoading.Finders { /// <summary>Finds incompatible CIL instructions that reference a given property.</summary> internal class PropertyFinder : BaseInstructionHandler { /********* ** Fields *********/ /// <summary>The full type name for which to find references.</summary> private readonly string FullTypeName; /// <summary>The property name for which to find references.</summary> private readonly string PropertyName; /// <summary>The result to return for matching instructions.</summary> private readonly InstructionHandleResult Result; /********* ** Public methods *********/ /// <summary>Construct an instance.</summary> /// <param name="fullTypeName">The full type name for which to find references.</param> /// <param name="propertyName">The property name for which to find references.</param> /// <param name="result">The result to return for matching instructions.</param> public PropertyFinder(string fullTypeName, string propertyName, InstructionHandleResult result) : base(defaultPhrase: $"{fullTypeName}.{propertyName} property") { this.FullTypeName = fullTypeName; this.PropertyName = propertyName; this.Result = result; } /// <inheritdoc /> public override bool Handle(ModuleDefinition module, ILProcessor cil, Instruction instruction) { if (!this.Flags.Contains(this.Result) && this.IsMatch(instruction)) this.MarkFlag(this.Result); return false; } /********* ** Protected methods *********/ /// <summary>Get whether a CIL instruction matches.</summary> /// <param name="instruction">The IL instruction.</param> protected bool IsMatch(Instruction instruction) { MethodReference methodRef = RewriteHelper.AsMethodReference(instruction); return methodRef != null && methodRef.DeclaringType.FullName == this.FullTypeName && (methodRef.Name == "get_" + this.PropertyName || methodRef.Name == "set_" + this.PropertyName); } } }