33 lines
1.3 KiB
C#
33 lines
1.3 KiB
C#
#pragma warning disable 659 // overrides AddToHashCodeCombiner instead
|
|
|
|
namespace System.Web.Mvc.ExpressionUtil {
|
|
using System;
|
|
using System.Diagnostics.CodeAnalysis;
|
|
using System.Linq.Expressions;
|
|
|
|
// ConstantExpression fingerprint class
|
|
//
|
|
// A ConstantExpression might represent a captured local variable, so we can't compile
|
|
// the value directly into the cached function. Instead, a placeholder is generated
|
|
// and the value is hoisted into a local variables array. This placeholder can then
|
|
// be compiled and cached, and the array lookup happens at runtime.
|
|
|
|
[SuppressMessage("Microsoft.Usage", "CA2218:OverrideGetHashCodeOnOverridingEquals", Justification = "Overrides AddToHashCodeCombiner() instead.")]
|
|
internal sealed class ConstantExpressionFingerprint : ExpressionFingerprint {
|
|
|
|
public ConstantExpressionFingerprint(ExpressionType nodeType, Type type)
|
|
: base(nodeType, type) {
|
|
|
|
// There are no properties on ConstantExpression that are worth including in
|
|
// the fingerprint.
|
|
}
|
|
|
|
public override bool Equals(object obj) {
|
|
ConstantExpressionFingerprint other = obj as ConstantExpressionFingerprint;
|
|
return (other != null)
|
|
&& this.Equals(other);
|
|
}
|
|
|
|
}
|
|
}
|