41 lines
1.5 KiB
C#
41 lines
1.5 KiB
C#
#pragma warning disable 659 // overrides AddToHashCodeCombiner instead
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namespace System.Web.Mvc.ExpressionUtil {
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq.Expressions;
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using System.Reflection;
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// BinaryExpression fingerprint class
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// Useful for things like array[index]
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[SuppressMessage("Microsoft.Usage", "CA2218:OverrideGetHashCodeOnOverridingEquals", Justification = "Overrides AddToHashCodeCombiner() instead.")]
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internal sealed class BinaryExpressionFingerprint : ExpressionFingerprint {
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public BinaryExpressionFingerprint(ExpressionType nodeType, Type type, MethodInfo method)
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: base(nodeType, type) {
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// Other properties on BinaryExpression (like IsLifted / IsLiftedToNull) are simply derived
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// from Type and NodeType, so they're not necessary for inclusion in the fingerprint.
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Method = method;
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}
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// http://msdn.microsoft.com/en-us/library/system.linq.expressions.binaryexpression.method.aspx
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public MethodInfo Method { get; private set; }
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public override bool Equals(object obj) {
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BinaryExpressionFingerprint other = obj as BinaryExpressionFingerprint;
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return (other != null)
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&& Equals(this.Method, other.Method)
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&& this.Equals(other);
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}
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internal override void AddToHashCodeCombiner(HashCodeCombiner combiner) {
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combiner.AddObject(Method);
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base.AddToHashCodeCombiner(combiner);
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}
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}
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}
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