-
-
Notifications
You must be signed in to change notification settings - Fork 255
/
StatementCodeFixProvider.cs
138 lines (120 loc) · 6.53 KB
/
StatementCodeFixProvider.cs
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
137
138
// Copyright (c) Josef Pihrt. All rights reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Collections.Immutable;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Roslynator.CodeFixes;
using Roslynator.CSharp.Analysis.UseMethodChaining;
using Roslynator.CSharp.Refactorings;
namespace Roslynator.CSharp.CodeFixes
{
[ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(StatementCodeFixProvider))]
[Shared]
public class StatementCodeFixProvider : BaseCodeFixProvider
{
public sealed override ImmutableArray<string> FixableDiagnosticIds
{
get
{
return ImmutableArray.Create(
DiagnosticIdentifiers.AddEmptyLineBeforeWhileInDoStatement,
DiagnosticIdentifiers.InlineLazyInitialization,
DiagnosticIdentifiers.RemoveRedundantDisposeOrCloseCall,
DiagnosticIdentifiers.RemoveRedundantStatement,
DiagnosticIdentifiers.UseMethodChaining);
}
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out StatementSyntax statement))
return;
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case DiagnosticIdentifiers.AddEmptyLineBeforeWhileInDoStatement:
{
CodeAction codeAction = CodeAction.Create(
"Add empty line",
ct => AddEmptyLineBeforeWhileInDoStatementAsync(context.Document, statement, ct),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.InlineLazyInitialization:
{
CodeAction codeAction = CodeAction.Create(
"Inline lazy initialization",
cancellationToken =>
{
return InlineLazyInitializationRefactoring.RefactorAsync(
context.Document,
(IfStatementSyntax)statement,
cancellationToken);
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantDisposeOrCloseCall:
{
var expressionStatement = (ExpressionStatementSyntax)statement;
var invocation = (InvocationExpressionSyntax)expressionStatement.Expression;
var memberAccess = (MemberAccessExpressionSyntax)invocation.Expression;
CodeAction codeAction = CodeAction.Create(
$"Remove redundant '{memberAccess.Name?.Identifier.ValueText}' call",
cancellationToken => RemoveRedundantDisposeOrCloseCallRefactoring.RefactorAsync(context.Document, expressionStatement, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantStatement:
{
CodeAction codeAction = CodeAction.Create(
$"Remove redundant {CSharpFacts.GetTitle(statement)}",
cancellationToken => RemoveRedundantStatementRefactoring.RefactorAsync(context.Document, statement, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.UseMethodChaining:
{
var expressionStatement = (ExpressionStatementSyntax)statement;
UseMethodChainingAnalysis analysis;
if (expressionStatement.Expression.Kind() == SyntaxKind.InvocationExpression)
{
analysis = UseMethodChainingAnalysis.WithoutAssignmentAnalysis;
}
else
{
analysis = UseMethodChainingAnalysis.WithAssignmentAnalysis;
}
CodeAction codeAction = CodeAction.Create(
"Use method chaining",
cancellationToken => UseMethodChainingRefactoring.RefactorAsync(context.Document, analysis, expressionStatement, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}
private static Task<Document> AddEmptyLineBeforeWhileInDoStatementAsync(
Document document,
StatementSyntax statement,
CancellationToken cancellationToken = default(CancellationToken))
{
SyntaxTriviaList trailingTrivia = statement.GetTrailingTrivia();
int index = trailingTrivia.IndexOf(SyntaxKind.EndOfLineTrivia);
SyntaxTriviaList newTrailingTrivia = trailingTrivia.Insert(index, CSharpFactory.NewLine());
StatementSyntax newStatement = statement.WithTrailingTrivia(newTrailingTrivia);
return document.ReplaceNodeAsync(statement, newStatement, cancellationToken);
}
}
}