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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
//
// CrefSyntaxExtensions.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2015 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using Microsoft.CodeAnalysis.CSharp.Extensions.ContextQuery;
using Microsoft.CodeAnalysis.CSharp.Simplification;
using Microsoft.CodeAnalysis.CSharp.Symbols;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.CSharp.Utilities;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Rename.ConflictEngine;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Shared.Utilities;
using Microsoft.CodeAnalysis.Simplification;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Utilities;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis;
using System;
using System.Reflection;
namespace ICSharpCode.NRefactory6.CSharp
{
static class CrefSyntaxExtensions
{
public static bool TryReduceOrSimplifyExplicitName(
this CrefSyntax crefSyntax,
SemanticModel semanticModel,
out CrefSyntax replacementNode,
out TextSpan issueSpan,
OptionSet optionSet,
CancellationToken cancellationToken)
{
replacementNode = null;
issueSpan = default(TextSpan);
// Currently Qualified Cref is the only CrefSyntax We are handling separately
if (crefSyntax.Kind() != SyntaxKind.QualifiedCref)
{
return false;
}
var qualifiedCrefSyntax = (QualifiedCrefSyntax)crefSyntax;
var memberCref = qualifiedCrefSyntax.Member;
// Currently we are dealing with only the NameMemberCrefs
if (optionSet.GetOption(SimplificationOptions.PreferIntrinsicPredefinedTypeKeywordInMemberAccess, LanguageNames.CSharp) &&
(memberCref.Kind() == SyntaxKind.NameMemberCref))
{
var nameMemberCref = ((NameMemberCrefSyntax)memberCref).Name;
var symbolInfo = semanticModel.GetSymbolInfo(nameMemberCref, cancellationToken);
var symbol = symbolInfo.Symbol;
if (symbol == null)
{
return false;
}
if (symbol is INamespaceOrTypeSymbol)
{
//var namespaceOrTypeSymbol = (INamespaceOrTypeSymbol)symbol;
// 1. Check for Predefined Types
if (symbol is INamedTypeSymbol)
{
var namedSymbol = (INamedTypeSymbol)symbol;
var keywordKind = ExpressionSyntaxExtensions.GetPredefinedKeywordKind(namedSymbol.SpecialType);
if (keywordKind != SyntaxKind.None)
{
replacementNode = SyntaxFactory.TypeCref(
SyntaxFactory.PredefinedType(
SyntaxFactory.Token(crefSyntax.GetLeadingTrivia(), keywordKind, crefSyntax.GetTrailingTrivia())));
replacementNode = crefSyntax.CopyAnnotationsTo(replacementNode);
// we want to show the whole name expression as unnecessary
issueSpan = crefSyntax.Span;
return true;
}
}
}
}
var oldSymbol = semanticModel.GetSymbolInfo(crefSyntax, cancellationToken).Symbol;
if (oldSymbol != null)
{
var speculativeBindingOption = SpeculativeBindingOption.BindAsExpression;
if (oldSymbol is INamespaceOrTypeSymbol)
{
speculativeBindingOption = SpeculativeBindingOption.BindAsTypeOrNamespace;
}
var newSymbol = semanticModel.GetSpeculativeSymbolInfo(crefSyntax.SpanStart, memberCref, speculativeBindingOption).Symbol;
if (newSymbol == oldSymbol)
{
// Copy Trivia and Annotations
memberCref = memberCref.WithLeadingTrivia(crefSyntax.GetLeadingTrivia());
memberCref = crefSyntax.CopyAnnotationsTo(memberCref);
issueSpan = qualifiedCrefSyntax.Container.Span;
replacementNode = memberCref;
return true;
}
}
return false;
}
}
}
|
