public static async Task ComputeRefactoringsAsync(RefactoringContext context, InvocationExpressionSyntax invocation)
{
if (invocation.IsParentKind(SyntaxKind.ExpressionStatement))
{
return;
}
SimpleMemberInvocationExpressionInfo invocationInfo = SyntaxInfo.SimpleMemberInvocationExpressionInfo(invocation);
if (!invocationInfo.Success)
{
return;
}
switch (invocationInfo.NameText)
{
case "First":
{
if (invocationInfo.Arguments.Any())
{
break;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (!UseElementAccessAnalysis.IsFixableFirst(invocationInfo, semanticModel, context.CancellationToken))
{
break;
}
context.RegisterRefactoring(
"Use [] instead of calling 'First'",
ct => UseElementAccessInsteadOfEnumerableMethodRefactoring.UseElementAccessInsteadOfFirstAsync(context.Document, invocation, ct),
RefactoringDescriptors.UseElementAccessInsteadOfLinqMethod);
break;
}
case "Last":
{
if (invocationInfo.Arguments.Any())
{
break;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (!UseElementAccessAnalysis.IsFixableLast(invocationInfo, semanticModel, context.CancellationToken))
{
break;
}
string propertyName = CSharpUtility.GetCountOrLengthPropertyName(invocationInfo.Expression, semanticModel, context.CancellationToken);
if (propertyName == null)
{
break;
}
context.RegisterRefactoring(
"Use [] instead of calling 'Last'",
ct => UseElementAccessInsteadOfEnumerableMethodRefactoring.UseElementAccessInsteadOfLastAsync(context.Document, invocation, propertyName, ct),
RefactoringDescriptors.UseElementAccessInsteadOfLinqMethod);
break;
}
case "ElementAt":
{
if (invocationInfo.Arguments.SingleOrDefault(shouldThrow: false)?.Expression?.IsMissing != false)
{
break;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (!UseElementAccessAnalysis.IsFixableElementAt(invocationInfo, semanticModel, context.CancellationToken))
{
break;
}
context.RegisterRefactoring(
"Use [] instead of calling 'ElementAt'",
ct => UseElementAccessInsteadOfEnumerableMethodRefactoring.UseElementAccessInsteadOfElementAtAsync(context.Document, invocation, ct),
RefactoringDescriptors.UseElementAccessInsteadOfLinqMethod);
break;
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, InvocationExpressionSyntax invocationExpression)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseElementAccessInsteadOfEnumerableMethod,
RefactoringIdentifiers.ReplaceAnyWithAllOrAllWithAny,
RefactoringIdentifiers.CallExtensionMethodAsInstanceMethod,
RefactoringIdentifiers.ReplaceStringContainsWithStringIndexOf))
{
ExpressionSyntax expression = invocationExpression.Expression;
if (expression != null &&
invocationExpression.ArgumentList != null)
{
if (expression.IsKind(SyntaxKind.SimpleMemberAccessExpression) &&
((MemberAccessExpressionSyntax)expression).Name?.Span.Contains(context.Span) == true)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseElementAccessInsteadOfEnumerableMethod))
{
await UseElementAccessInsteadOfEnumerableMethodRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceAnyWithAllOrAllWithAny))
{
await ReplaceAnyWithAllOrAllWithAnyRefactoring.ComputeRefactoringAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStringContainsWithStringIndexOf))
{
await ReplaceStringContainsWithStringIndexOfRefactoring.ComputeRefactoringAsync(context, invocationExpression).ConfigureAwait(false);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CallExtensionMethodAsInstanceMethod))
{
SyntaxNodeOrToken nodeOrToken = CallExtensionMethodAsInstanceMethodAnalysis.GetNodeOrToken(expression);
if (nodeOrToken.Span.Contains(context.Span))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
CallExtensionMethodAsInstanceMethodAnalysisResult analysis = CallExtensionMethodAsInstanceMethodAnalysis.Analyze(invocationExpression, semanticModel, allowAnyExpression: true, cancellationToken: context.CancellationToken);
if (analysis.Success)
{
context.RegisterRefactoring(
CallExtensionMethodAsInstanceMethodRefactoring.Title,
cancellationToken =>
{
return(context.Document.ReplaceNodeAsync(
analysis.InvocationExpression,
analysis.NewInvocationExpression,
cancellationToken));
});
}
}
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStringFormatWithInterpolatedString) &&
context.SupportsCSharp6)
{
await ReplaceStringFormatWithInterpolatedStringRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseBitwiseOperationInsteadOfCallingHasFlag))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (UseBitwiseOperationInsteadOfCallingHasFlagAnalysis.IsFixable(invocationExpression, semanticModel, context.CancellationToken))
{
context.RegisterRefactoring(
UseBitwiseOperationInsteadOfCallingHasFlagRefactoring.Title,
cancellationToken =>
{
return(UseBitwiseOperationInsteadOfCallingHasFlagRefactoring.RefactorAsync(
context.Document,
invocationExpression,
cancellationToken));
});
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InlineMethod))
{
await InlineMethodRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
}