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#pragma warning disable 659 // overrides AddToHashCodeCombiner instead
/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc.ExpressionUtil {
using System;
using System.Diagnostics.CodeAnalysis;
using System.Linq.Expressions;
using System.Reflection;
// MemberExpression fingerprint class
// Expression of form xxx.FieldOrProperty
[SuppressMessage("Microsoft.Usage", "CA2218:OverrideGetHashCodeOnOverridingEquals",
Justification = "Overrides AddToHashCodeCombiner() instead.")]
internal sealed class MemberExpressionFingerprint : ExpressionFingerprint {
private MemberExpressionFingerprint(MemberExpression expression)
: base(expression) {
Member = expression.Member;
}
public MemberInfo Member {
get;
private set;
}
public ExpressionFingerprint Target {
get;
private set;
}
internal override void AddToHashCodeCombiner(HashCodeCombiner combiner) {
base.AddToHashCodeCombiner(combiner);
combiner.AddObject(Member);
combiner.AddFingerprint(Target);
}
public static MemberExpressionFingerprint Create(MemberExpression expression, ParserContext parserContext) {
ExpressionFingerprint target = Create(expression.Expression, parserContext);
if (target == null && expression.Expression != null) {
return null;
}
return new MemberExpressionFingerprint(expression) {
Target = target
};
}
public override bool Equals(object obj) {
MemberExpressionFingerprint other = obj as MemberExpressionFingerprint;
if (other == null) {
return false;
}
return (this.Member == other.Member
&& Object.Equals(this.Target, other.Target)
&& base.Equals(other));
}
public override Expression ToExpression(ParserContext parserContext) {
Expression targetExpr = ToExpression(Target, parserContext);
return Expression.MakeMemberAccess(targetExpr, Member);
}
}
}
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