private static bool CanReplaceWithReducedName(
this MemberAccessExpressionSyntax memberAccess,
ExpressionSyntax reducedName,
SemanticModel semanticModel,
CancellationToken cancellationToken)
{
if (!IsThisOrTypeOrNamespace(memberAccess, semanticModel))
{
return false;
}
var speculationAnalyzer = new SpeculationAnalyzer(memberAccess, reducedName, semanticModel, cancellationToken);
if (!speculationAnalyzer.SymbolsForOriginalAndReplacedNodesAreCompatible() ||
speculationAnalyzer.ReplacementChangesSemantics())
{
return false;
}
if (WillConflictWithExistingLocal(memberAccess, reducedName))
{
return false;
}
if (IsMemberAccessADynamicInvocation(memberAccess, semanticModel))
{
return false;
}
if (memberAccess.AccessMethodWithDynamicArgumentInsideStructConstructor(semanticModel))
{
return false;
}
if (memberAccess.Expression.Kind() == SyntaxKind.BaseExpression)
{
var enclosingNamedType = semanticModel.GetEnclosingNamedType(memberAccess.SpanStart, cancellationToken);
var symbol = semanticModel.GetSymbolInfo(memberAccess.Name, cancellationToken).Symbol;
if (enclosingNamedType != null &&
!enclosingNamedType.IsSealed &&
symbol != null &&
symbol.IsOverridable())
{
return false;
}
}
var invalidTransformation1 = ParserWouldTreatExpressionAsCast(reducedName, memberAccess);
return !invalidTransformation1;
}
protected override INamedTypeSymbol DetermineTypeToGenerateIn(SemanticModel semanticModel, SimpleNameSyntax simpleName, CancellationToken cancellationToken)
{
return(semanticModel.GetEnclosingNamedType(simpleName.SpanStart, cancellationToken));
}
public async Task ComputeRefactoringsAsync(RefactoringContext context, TNode node)
{
if (!ValidateNode(node, context.Span))
{
return;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TSymbol symbol = GetMemberSymbol(node, semanticModel, context.CancellationToken);
if (EqualityComparer <TSymbol> .Default.Equals(symbol, default(TSymbol)))
{
return;
}
TDeclaration declaration = await GetMemberDeclarationAsync(symbol, context.CancellationToken).ConfigureAwait(false);
if (declaration == null)
{
return;
}
for (SyntaxNode parent = node.Parent; parent != null; parent = parent.Parent)
{
if (object.ReferenceEquals(declaration, parent))
{
return;
}
}
(ExpressionSyntax expression, SyntaxList <StatementSyntax> statements) = GetExpressionOrStatements(declaration);
SyntaxNode nodeIncludingConditionalAccess = node.WalkUp(f => f.IsKind(SyntaxKind.ConditionalAccessExpression));
if (expression != null ||
(statements.Any() && nodeIncludingConditionalAccess.IsParentKind(SyntaxKind.ExpressionStatement)))
{
ImmutableArray <ParameterInfo> parameterInfos = GetParameterInfos(node, symbol);
if (parameterInfos.IsDefault)
{
return;
}
INamedTypeSymbol enclosingType = semanticModel.GetEnclosingNamedType(node.SpanStart, context.CancellationToken);
SemanticModel declarationSemanticModel = semanticModel;
if (node.SyntaxTree != declaration.SyntaxTree)
{
Document document = context.Solution.GetDocument(declaration.SyntaxTree);
// https://github.com/dotnet/roslyn/issues/5260
if (document == null)
{
return;
}
declarationSemanticModel = await document.GetSemanticModelAsync(context.CancellationToken).ConfigureAwait(false);
}
InlineRefactoring <TNode, TDeclaration, TSymbol> refactoring = CreateRefactoring(context.Document, nodeIncludingConditionalAccess, enclosingType, symbol, declaration, parameterInfos, semanticModel, declarationSemanticModel, context.CancellationToken);
string title = CSharpFacts.GetTitle(declaration);
if (expression != null)
{
context.RegisterRefactoring($"Inline {title}", ct => refactoring.InlineAsync(nodeIncludingConditionalAccess, expression, ct), GetDescriptor());
context.RegisterRefactoring($"Inline and remove {title}", ct => refactoring.InlineAndRemoveAsync(nodeIncludingConditionalAccess, expression, ct), GetDescriptor(), "Remove");
}
else
{
var expressionStatement = (ExpressionStatementSyntax)nodeIncludingConditionalAccess.Parent;
context.RegisterRefactoring($"Inline {title}", ct => refactoring.InlineAsync(expressionStatement, statements, ct), GetDescriptor());
context.RegisterRefactoring($"Inline and remove {title}", ct => refactoring.InlineAndRemoveAsync(expressionStatement, statements, ct), GetDescriptor(), "Remove");
}
}
}
private ExpressionSyntax VisitSimpleName(SimpleNameSyntax rewrittenSimpleName, SimpleNameSyntax originalSimpleName)
{
_cancellationToken.ThrowIfCancellationRequested();
// if this is "var", then do not process further
if (originalSimpleName.IsVar)
{
return(rewrittenSimpleName);
}
var identifier = rewrittenSimpleName.Identifier;
ExpressionSyntax newNode = rewrittenSimpleName;
var isInsideCref = originalSimpleName.AncestorsAndSelf(ascendOutOfTrivia: true).Any(n => n is CrefSyntax);
////
//// 1. if this identifier is an alias, we'll expand it here and replace the node completely.
////
if (!SyntaxFacts.IsAliasQualifier(originalSimpleName))
{
var aliasInfo = _semanticModel.GetAliasInfo(originalSimpleName, _cancellationToken);
if (aliasInfo != null)
{
var aliasTarget = aliasInfo.Target;
if (aliasTarget.IsNamespace() && ((INamespaceSymbol)aliasTarget).IsGlobalNamespace)
{
return(rewrittenSimpleName);
}
// if the enclosing expression is a typeof expression that already contains open type we cannot
// we need to insert an open type as well.
var typeOfExpression = originalSimpleName.GetAncestor <TypeOfExpressionSyntax>();
if (typeOfExpression != null && IsTypeOfUnboundGenericType(_semanticModel, typeOfExpression))
{
aliasTarget = ((INamedTypeSymbol)aliasTarget).ConstructUnboundGenericType();
}
// the expanded form replaces the current identifier name.
var replacement = FullyQualifyIdentifierName(
aliasTarget,
newNode,
originalSimpleName,
replaceNode: true,
isInsideCref: isInsideCref,
omitLeftHandSide: false)
.WithAdditionalAnnotations(Simplifier.Annotation);
// We replace the simple name completely, so we can't continue and rename the token
// with a RenameLocationAnnotation.
// There's also no way of removing annotations, so we just add a DoNotRenameAnnotation.
if (replacement.Kind() == SyntaxKind.AliasQualifiedName)
{
var qualifiedReplacement = (AliasQualifiedNameSyntax)replacement;
var newIdentifier = identifier.CopyAnnotationsTo(qualifiedReplacement.Name.Identifier);
if (_annotationForReplacedAliasIdentifier != null)
{
newIdentifier = newIdentifier.WithAdditionalAnnotations(_annotationForReplacedAliasIdentifier);
}
var aliasAnnotationInfo = AliasAnnotation.Create(aliasInfo.Name);
newIdentifier = newIdentifier.WithAdditionalAnnotations(aliasAnnotationInfo);
replacement = replacement.ReplaceNode(
qualifiedReplacement.Name,
qualifiedReplacement.Name.WithIdentifier(newIdentifier));
replacement = newNode.CopyAnnotationsTo(replacement);
var firstReplacementToken = replacement.GetFirstToken(true, false, true, true);
var firstOriginalToken = originalSimpleName.GetFirstToken(true, false, true, true);
SyntaxToken tokenWithLeadingWhitespace;
if (TryAddLeadingElasticTriviaIfNecessary(firstReplacementToken, firstOriginalToken, out tokenWithLeadingWhitespace))
{
replacement = replacement.ReplaceToken(firstOriginalToken, tokenWithLeadingWhitespace);
}
replacement = AppendElasticTriviaIfNecessary(replacement, originalSimpleName);
return(replacement);
}
if (replacement.Kind() == SyntaxKind.QualifiedName)
{
var qualifiedReplacement = (QualifiedNameSyntax)replacement;
var newIdentifier = identifier.CopyAnnotationsTo(qualifiedReplacement.Right.Identifier);
if (_annotationForReplacedAliasIdentifier != null)
{
newIdentifier = newIdentifier.WithAdditionalAnnotations(_annotationForReplacedAliasIdentifier);
}
var aliasAnnotationInfo = AliasAnnotation.Create(aliasInfo.Name);
newIdentifier = newIdentifier.WithAdditionalAnnotations(aliasAnnotationInfo);
replacement = replacement.ReplaceNode(
qualifiedReplacement.Right,
qualifiedReplacement.Right.WithIdentifier(newIdentifier));
replacement = newNode.CopyAnnotationsTo(replacement);
replacement = AppendElasticTriviaIfNecessary(replacement, originalSimpleName);
return(replacement);
}
throw new NotImplementedException();
}
}
var symbol = _semanticModel.GetSymbolInfo(originalSimpleName.Identifier).Symbol;
if (symbol == null)
{
return(newNode);
}
var typeArgumentSymbols = TypeArgumentSymbolsPresentInName(originalSimpleName);
var omitLeftSideOfExpression = false;
// Check to see if the type Arguments in the resultant Symbol is recursively defined.
if (IsTypeArgumentDefinedRecursive(symbol, typeArgumentSymbols, enterContainingSymbol: true))
{
if (symbol.ContainingSymbol.Equals(symbol.OriginalDefinition.ContainingSymbol) &&
symbol.Kind == SymbolKind.Method &&
((IMethodSymbol)symbol).IsStatic)
{
if (IsTypeArgumentDefinedRecursive(symbol, typeArgumentSymbols, enterContainingSymbol: false))
{
return(newNode);
}
else
{
omitLeftSideOfExpression = true;
}
}
else
{
return(newNode);
}
}
if (IsInvocationWithDynamicArguments(originalSimpleName, _semanticModel))
{
return(newNode);
}
////
//// 2. If it's an attribute, make sure the identifier matches the attribute's class name.
////
if (originalSimpleName.GetAncestor <AttributeSyntax>() != null)
{
if (symbol.IsConstructor() && symbol.ContainingType?.IsAttribute() == true)
{
symbol = symbol.ContainingType;
var name = symbol.Name;
Debug.Assert(name.StartsWith(originalSimpleName.Identifier.ValueText, StringComparison.Ordinal));
// if the user already used the Attribute suffix in the attribute, we'll maintain it.
if (identifier.ValueText == name && name.EndsWith("Attribute", StringComparison.Ordinal))
{
identifier = identifier.WithAdditionalAnnotations(SimplificationHelpers.DontSimplifyAnnotation);
}
identifier = identifier.CopyAnnotationsTo(SyntaxFactory.VerbatimIdentifier(identifier.LeadingTrivia, name, name, identifier.TrailingTrivia));
}
}
////
//// 3. Always try to escape keyword identifiers
////
identifier = TryEscapeIdentifierToken(identifier, originalSimpleName, _semanticModel).WithAdditionalAnnotations(Simplifier.Annotation);
if (identifier != rewrittenSimpleName.Identifier)
{
switch (newNode.Kind())
{
case SyntaxKind.IdentifierName:
case SyntaxKind.GenericName:
newNode = ((SimpleNameSyntax)newNode).WithIdentifier(identifier);
break;
default:
throw new NotImplementedException();
}
}
var parent = originalSimpleName.Parent;
// do not complexify further for location where only simple names are allowed
if (parent is MemberDeclarationSyntax ||
parent is MemberBindingExpressionSyntax ||
originalSimpleName.GetAncestor <NameEqualsSyntax>() != null ||
(parent is MemberAccessExpressionSyntax && parent.Kind() != SyntaxKind.SimpleMemberAccessExpression) ||
((parent.Kind() == SyntaxKind.SimpleMemberAccessExpression || parent.Kind() == SyntaxKind.NameMemberCref) && originalSimpleName.IsRightSideOfDot()) ||
(parent.Kind() == SyntaxKind.QualifiedName && originalSimpleName.IsRightSideOfQualifiedName()) ||
(parent.Kind() == SyntaxKind.AliasQualifiedName))
{
return(TryAddTypeArgumentToIdentifierName(newNode, symbol));
}
////
//// 4. If this is a standalone identifier or the left side of a qualified name or member access try to fully qualify it
////
// we need to treat the constructor as type name, so just get the containing type.
if (symbol.IsConstructor() && (parent.Kind() == SyntaxKind.ObjectCreationExpression || parent.Kind() == SyntaxKind.NameMemberCref))
{
symbol = symbol.ContainingType;
}
// if it's a namespace or type name, fully qualify it.
if (symbol.Kind == SymbolKind.NamedType ||
symbol.Kind == SymbolKind.Namespace)
{
var replacement = FullyQualifyIdentifierName(
(INamespaceOrTypeSymbol)symbol,
newNode,
originalSimpleName,
replaceNode: false,
isInsideCref: isInsideCref,
omitLeftHandSide: omitLeftSideOfExpression)
.WithAdditionalAnnotations(Simplifier.Annotation);
replacement = AppendElasticTriviaIfNecessary(replacement, originalSimpleName);
return(replacement);
}
// if it's a member access, we're fully qualifying the left side and make it a member access.
if (symbol.Kind == SymbolKind.Method ||
symbol.Kind == SymbolKind.Field ||
symbol.Kind == SymbolKind.Property)
{
if (symbol.IsStatic ||
originalSimpleName.IsParentKind(SyntaxKind.NameMemberCref) ||
_semanticModel.SyntaxTree.IsNameOfContext(originalSimpleName.SpanStart, _semanticModel, _cancellationToken))
{
newNode = FullyQualifyIdentifierName(
symbol,
newNode,
originalSimpleName,
replaceNode: false,
isInsideCref: isInsideCref,
omitLeftHandSide: omitLeftSideOfExpression);
}
else
{
if (!IsPropertyNameOfObjectInitializer(originalSimpleName))
{
ExpressionSyntax left;
// Assumption here is, if the enclosing and containing types are different then there is Inheritence relationship
if (_semanticModel.GetEnclosingNamedType(originalSimpleName.SpanStart, _cancellationToken) != symbol.ContainingType)
{
left = SyntaxFactory.BaseExpression();
}
else
{
left = SyntaxFactory.ThisExpression();
}
var identifiersLeadingTrivia = newNode.GetLeadingTrivia();
newNode = TryAddTypeArgumentToIdentifierName(newNode, symbol);
newNode = newNode.CopyAnnotationsTo(
SyntaxFactory.MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
left,
(SimpleNameSyntax)newNode.WithLeadingTrivia(null))
.WithLeadingTrivia(identifiersLeadingTrivia));
}
}
}
var result = newNode.WithAdditionalAnnotations(Simplifier.Annotation);
result = AppendElasticTriviaIfNecessary(result, originalSimpleName);
return(result);
}
private static async Task HandleSingleTypeAsync(CompletionContext context, SemanticModel semanticModel, SyntaxToken token, ITypeSymbol type, CancellationToken cancellationToken)
{
// If we have a Nullable<T>, unwrap it.
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T)
{
var typeArg = type.GetTypeArguments().FirstOrDefault();
if (typeArg == null)
{
return;
}
type = typeArg;
}
// When true, this completion provider shows both the type (e.g. DayOfWeek) and its qualified members (e.g.
// DayOfWeek.Friday). We set this to false for enum-like cases (static members of structs and classes) so we
// only show the qualified members in these cases.
var showType = true;
var position = context.Position;
var enclosingNamedType = semanticModel.GetEnclosingNamedType(position, cancellationToken);
if (type.TypeKind != TypeKind.Enum)
{
var enumType = TryGetEnumTypeInEnumInitializer(semanticModel, token, type, cancellationToken) ??
TryGetCompletionListType(type, enclosingNamedType, semanticModel.Compilation);
if (enumType == null)
{
if (context.Trigger.Kind == CompletionTriggerKind.Insertion && s_triggerCharacters.Contains(context.Trigger.Character))
{
// This completion provider understands static members of matching types, but doesn't
// proactively trigger completion for them to avoid interfering with common typing patterns.
return;
}
// If this isn't an enum or marked with completionlist, also check if it contains static members of
// a matching type. These 'enum-like' types have similar characteristics to enum completion, but do
// not show the containing type as a separate item in completion.
showType = false;
enumType = TryGetTypeWithStaticMembers(type);
if (enumType == null)
{
return;
}
}
type = enumType;
}
var hideAdvancedMembers = context.CompletionOptions.HideAdvancedMembers;
if (!type.IsEditorBrowsable(hideAdvancedMembers, semanticModel.Compilation))
{
return;
}
// Does type have any aliases?
var alias = await type.FindApplicableAliasAsync(position, semanticModel, cancellationToken).ConfigureAwait(false);
var displayText = alias != null
? alias.Name
: type.ToMinimalDisplayString(semanticModel, position);
// Add the enum itself.
var symbol = alias ?? type;
var sortText = symbol.Name;
if (showType)
{
context.AddItem(SymbolCompletionItem.CreateWithSymbolId(
displayText,
displayTextSuffix: "",
symbols: ImmutableArray.Create(symbol),
rules: s_enumTypeRules,
contextPosition: position,
sortText: sortText));
}
// And now all the accessible members of the enum.
if (type.TypeKind == TypeKind.Enum)
{
// We'll want to build a list of the actual enum members and all accessible instances of that enum, too
var index = 0;
var fields = type.GetMembers().OfType <IFieldSymbol>().Where(f => f.IsConst).Where(f => f.HasConstantValue);
foreach (var field in fields.OrderBy(f => IntegerUtilities.ToInt64(f.ConstantValue)))
{
index++;
if (!field.IsEditorBrowsable(hideAdvancedMembers, semanticModel.Compilation))
{
continue;
}
var memberDisplayName = $"{displayText}.{field.Name}";
context.AddItem(SymbolCompletionItem.CreateWithSymbolId(
displayText: memberDisplayName,
displayTextSuffix: "",
symbols: ImmutableArray.Create <ISymbol>(field),
rules: CompletionItemRules.Default,
contextPosition: position,
sortText: $"{sortText}_{index:0000}",
filterText: memberDisplayName));
}
}
else if (enclosingNamedType is not null)
{
// Build a list of the members with the same type as the target
foreach (var member in type.GetMembers())
{
ISymbol staticSymbol;
ITypeSymbol symbolType;
if (member is IFieldSymbol {
IsStatic: true
} field)
{
staticSymbol = field;
symbolType = field.Type;
}
else if (member is IPropertySymbol {
IsStatic: true, IsIndexer: false
} property)
{
staticSymbol = property;
symbolType = property.Type;
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, InvocationExpressionSyntax invocation)
{
if (CheckSpan(invocation, context.Span))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
IMethodSymbol methodSymbol = GetMethodSymbol(invocation, semanticModel, context.CancellationToken);
if (methodSymbol != null)
{
MethodDeclarationSyntax methodDeclaration = await GetMethodDeclarationAsync(methodSymbol, context.CancellationToken).ConfigureAwait(false);
if (methodDeclaration != null &&
!invocation.Ancestors().Any(f => f == methodDeclaration))
{
ExpressionSyntax expression = GetMethodExpression(methodDeclaration);
if (expression != null)
{
List <ParameterInfo> parameterInfos = GetParameterInfos(invocation, methodSymbol, semanticModel, context.CancellationToken);
if (parameterInfos != null)
{
INamedTypeSymbol enclosingType = semanticModel.GetEnclosingNamedType(invocation.SpanStart, context.CancellationToken);
SemanticModel declarationSemanticModel = (invocation.SyntaxTree == methodDeclaration.SyntaxTree)
? semanticModel
: await context.Solution.GetDocument(methodDeclaration.SyntaxTree).GetSemanticModelAsync(context.CancellationToken).ConfigureAwait(false);
var refactoring = new InlineMethodExpressionRefactoring(context.Document, invocation, enclosingType, methodSymbol, methodDeclaration, parameterInfos.ToArray(), semanticModel, declarationSemanticModel, context.CancellationToken);
context.RegisterRefactoring("Inline method", c => refactoring.InlineMethodAsync(invocation, expression));
context.RegisterRefactoring("Inline and remove method", c => refactoring.InlineAndRemoveMethodAsync(invocation, expression));
}
}
else if (methodSymbol.ReturnsVoid &&
invocation.IsParentKind(SyntaxKind.ExpressionStatement))
{
BlockSyntax body = methodDeclaration.Body;
if (body != null)
{
SyntaxList <StatementSyntax> statements = body.Statements;
if (statements.Any())
{
List <ParameterInfo> parameterInfos = GetParameterInfos(invocation, methodSymbol, semanticModel, context.CancellationToken);
if (parameterInfos != null)
{
var expressionStatement = (ExpressionStatementSyntax)invocation.Parent;
INamedTypeSymbol enclosingType = semanticModel.GetEnclosingNamedType(invocation.SpanStart, context.CancellationToken);
SemanticModel declarationSemanticModel = (invocation.SyntaxTree == methodDeclaration.SyntaxTree)
? semanticModel
: await context.Solution.GetDocument(methodDeclaration.SyntaxTree).GetSemanticModelAsync(context.CancellationToken).ConfigureAwait(false);
var refactoring = new InlineMethodStatementsRefactoring(context.Document, invocation, enclosingType, methodSymbol, methodDeclaration, parameterInfos.ToArray(), semanticModel, declarationSemanticModel, context.CancellationToken);
context.RegisterRefactoring("Inline method", c => refactoring.InlineMethodAsync(expressionStatement, statements));
context.RegisterRefactoring("Inline and remove method", c => refactoring.InlineAndRemoveMethodAsync(expressionStatement, statements));
}
}
}
}
}
}
}
}
private static async Task HandleSingleTypeAsync(CompletionContext context, SemanticModel semanticModel, SyntaxToken token, ITypeSymbol type, CancellationToken cancellationToken)
{
// If we have a Nullable<T>, unwrap it.
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T)
{
var typeArg = type.GetTypeArguments().FirstOrDefault();
if (typeArg == null)
return;
type = typeArg;
}
var position = context.Position;
if (type.TypeKind != TypeKind.Enum)
{
var enumType = TryGetEnumTypeInEnumInitializer(semanticModel, token, type, cancellationToken) ??
TryGetCompletionListType(type, semanticModel.GetEnclosingNamedType(position, cancellationToken), semanticModel.Compilation);
if (enumType == null)
return;
type = enumType;
}
var options = context.Options;
var hideAdvancedMembers = options.GetOption(CompletionOptions.HideAdvancedMembers, semanticModel.Language);
if (!type.IsEditorBrowsable(hideAdvancedMembers, semanticModel.Compilation))
return;
// Does type have any aliases?
var alias = await type.FindApplicableAliasAsync(position, semanticModel, cancellationToken).ConfigureAwait(false);
var displayText = alias != null
? alias.Name
: type.ToMinimalDisplayString(semanticModel, position);
// Add the enum itself.
var symbol = alias ?? type;
var sortText = symbol.Name;
context.AddItem(SymbolCompletionItem.CreateWithSymbolId(
displayText,
displayTextSuffix: "",
symbols: ImmutableArray.Create(symbol),
rules: s_enumTypeRules,
contextPosition: position,
sortText: sortText));
// And now all the accessible members of the enum.
if (type.TypeKind == TypeKind.Enum)
{
// We'll want to build a list of the actual enum members and all accessible instances of that enum, too
var index = 0;
var fields = type.GetMembers().OfType<IFieldSymbol>().Where(f => f.IsConst).Where(f => f.HasConstantValue);
foreach (var field in fields.OrderBy(f => IntegerUtilities.ToInt64(f.ConstantValue)))
{
index++;
if (!field.IsEditorBrowsable(hideAdvancedMembers, semanticModel.Compilation))
continue;
var memberDisplayName = $"{displayText}.{field.Name}";
context.AddItem(SymbolCompletionItem.CreateWithSymbolId(
displayText: memberDisplayName,
displayTextSuffix: "",
symbols: ImmutableArray.Create<ISymbol>(field),
rules: CompletionItemRules.Default,
contextPosition: position,
sortText: $"{sortText}_{index:0000}",
filterText: memberDisplayName));
}
}
}
public async Task ComputeRefactoringsAsync(RefactoringContext context, TNode node)
{
if (!CheckNode(node, context.Span))
{
return;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TSymbol symbol = GetMemberSymbol(node, semanticModel, context.CancellationToken);
if (EqualityComparer <TSymbol> .Default.Equals(symbol, default(TSymbol)))
{
return;
}
TDeclaration declaration = await GetMemberDeclarationAsync(symbol, context.CancellationToken).ConfigureAwait(false);
if (declaration == null)
{
return;
}
for (SyntaxNode parent = node.Parent; parent != null; parent = parent.Parent)
{
if (object.ReferenceEquals(declaration, parent))
{
return;
}
}
(ExpressionSyntax expression, SyntaxList <StatementSyntax> statements) = GetExpressionOrStatements(declaration);
if (expression != null ||
(statements.Any() && node.IsParentKind(SyntaxKind.ExpressionStatement)))
{
ImmutableArray <ParameterInfo> parameterInfos = GetParameterInfos(node, symbol);
if (parameterInfos.IsDefault)
{
return;
}
INamedTypeSymbol enclosingType = semanticModel.GetEnclosingNamedType(node.SpanStart, context.CancellationToken);
SemanticModel declarationSemanticModel = (node.SyntaxTree == declaration.SyntaxTree)
? semanticModel
: await context.Solution.GetDocument(declaration.SyntaxTree).GetSemanticModelAsync(context.CancellationToken).ConfigureAwait(false);
InlineRefactoring <TNode, TDeclaration, TSymbol> refactoring = CreateRefactoring(context.Document, node, enclosingType, symbol, declaration, parameterInfos, semanticModel, declarationSemanticModel, context.CancellationToken);
string title = declaration.GetTitle();
if (expression != null)
{
context.RegisterRefactoring($"Inline {title}", cancellationToken => refactoring.InlineAsync(node, expression, cancellationToken));
context.RegisterRefactoring($"Inline and remove {title}", cancellationToken => refactoring.InlineAndRemoveAsync(node, expression, cancellationToken));
}
else
{
var expressionStatement = (ExpressionStatementSyntax)node.Parent;
context.RegisterRefactoring($"Inline {title}", cancellationToken => refactoring.InlineAsync(expressionStatement, statements, cancellationToken));
context.RegisterRefactoring($"Inline and remove {title}", cancellationToken => refactoring.InlineAndRemoveAsync(expressionStatement, statements, cancellationToken));
}
}
}
