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using System.Diagnostics.CodeAnalysis;
using System.Linq.Expressions;
using System.Reflection;
#pragma warning disable 659 // overrides AddToHashCodeCombiner instead
namespace System.Web.Mvc.ExpressionUtil
{
// MethodCallExpression fingerprint class
// Expression of form xxx.Foo(...), xxx[...] (get_Item()), etc.
[SuppressMessage("Microsoft.Usage", "CA2218:OverrideGetHashCodeOnOverridingEquals", Justification = "Overrides AddToHashCodeCombiner() instead.")]
internal sealed class MethodCallExpressionFingerprint : ExpressionFingerprint
{
public MethodCallExpressionFingerprint(ExpressionType nodeType, Type type, MethodInfo method)
: base(nodeType, type)
{
// Other properties on MethodCallExpression (like the argument count) are simply derived
// from Type and Indexer, so they're not necessary for inclusion in the fingerprint.
Method = method;
}
// http://msdn.microsoft.com/en-us/library/system.linq.expressions.methodcallexpression.method.aspx
public MethodInfo Method { get; private set; }
public override bool Equals(object obj)
{
MethodCallExpressionFingerprint other = obj as MethodCallExpressionFingerprint;
return (other != null)
&& Equals(this.Method, other.Method)
&& this.Equals(other);
}
internal override void AddToHashCodeCombiner(HashCodeCombiner combiner)
{
combiner.AddObject(Method);
base.AddToHashCodeCombiner(combiner);
}
}
}
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