1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
#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.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
// 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 {
private MethodCallExpressionFingerprint(MethodCallExpression expression)
: base(expression) {
Method = expression.Method;
}
public ReadOnlyCollection<ExpressionFingerprint> Arguments {
get;
private set;
}
public MethodInfo Method {
get;
private set;
}
public ExpressionFingerprint Target {
get;
private set;
}
internal override void AddToHashCodeCombiner(HashCodeCombiner combiner) {
base.AddToHashCodeCombiner(combiner);
combiner.AddEnumerable(Arguments);
combiner.AddObject(Method);
combiner.AddFingerprint(Target);
}
public static MethodCallExpressionFingerprint Create(MethodCallExpression expression, ParserContext parserContext) {
ReadOnlyCollection<ExpressionFingerprint> arguments = Create(expression.Arguments, parserContext);
if (arguments == null) {
return null;
}
ExpressionFingerprint target = Create(expression.Object, parserContext);
if (target == null && expression.Object != null) {
return null;
}
return new MethodCallExpressionFingerprint(expression) {
Arguments = arguments,
Target = target
};
}
public override bool Equals(object obj) {
MethodCallExpressionFingerprint other = obj as MethodCallExpressionFingerprint;
if (other == null) {
return false;
}
return (this.Arguments.SequenceEqual(other.Arguments)
&& this.Method == other.Method
&& Object.Equals(this.Target, other.Target)
&& base.Equals(other));
}
public override Expression ToExpression(ParserContext parserContext) {
Expression targetExpr = ToExpression(Target, parserContext);
IEnumerable<Expression> argumentsExpr = ToExpression(Arguments, parserContext);
return Expression.Call(targetExpr, Method, argumentsExpr);
}
}
}
|
