public static LocalDeclarationStatementSyntax DeclareLocalVariable(Type variableType, string name,
ExpressionSyntax initValue = null,
VariableDeclarationType variableDeclarationType = VariableDeclarationType.ExplicitType)
{
VariableDeclaratorSyntax varDeclarator = SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(name));
if (variableType.IsVsArrayType())
{
ObjectCreationExpressionSyntax exp = SyntaxFactory.ObjectCreationExpression(variableType.ToTypeSyntax())
.WithArgumentList(SyntaxFactory.ArgumentList());
varDeclarator = varDeclarator.WithInitializer(SyntaxFactory.EqualsValueClause(exp));
}
else if (initValue != null)
{
varDeclarator = varDeclarator.WithInitializer(SyntaxFactory.EqualsValueClause(initValue));
}
VariableDeclarationSyntax varDeclaration = variableDeclarationType == VariableDeclarationType.InferredType
? SyntaxFactory.VariableDeclaration(SyntaxFactory.IdentifierName("var"))
: SyntaxFactory.VariableDeclaration(variableType.ToTypeSyntax());
varDeclaration = varDeclaration.WithVariables(SyntaxFactory.SingletonSeparatedList(varDeclarator));
return(SyntaxFactory.LocalDeclarationStatement(varDeclaration));
}
public static VariableDeclaratorSyntax WithInitialValue(
this VariableDeclaratorSyntax parentSyntax,
ExpressionSyntax childSyntax)
{
if (childSyntax == null)
{
return(parentSyntax.WithInitializer(null));
}
EqualsValueClauseSyntax valueSyntax = parentSyntax.Initializer;
return(valueSyntax == null?
parentSyntax.WithInitializer(SyntaxFactory.EqualsValueClause(childSyntax)) :
parentSyntax.WithInitializer(parentSyntax.Initializer.WithValue(childSyntax)));
}
private static VariableDeclaratorSyntax FieldConstDeclaration(ConstDeclaration constDeclaration,
VariableDeclaratorSyntax varDeclarator)
{
var assignment =
constDeclaration.Type.Type switch
{
BaseTypes.Int => SyntaxFactory.EqualsValueClause(
SyntaxFactory.LiteralExpression(
SyntaxKind.NumericLiteralExpression,
SyntaxFactory.Literal(constDeclaration.Value.ToInt32()))),
BaseTypes.Bool => SyntaxFactory.EqualsValueClause(
SyntaxFactory.LiteralExpression(
constDeclaration.Value.ToBool()
? SyntaxKind.TrueLiteralExpression
: SyntaxKind.FalseLiteralExpression)),
BaseTypes.Real => SyntaxFactory.EqualsValueClause(
SyntaxFactory.LiteralExpression(
SyntaxKind.NumericLiteralExpression,
SyntaxFactory.Literal(constDeclaration.Value.ToDouble()))),
_ => throw new ArgumentException(
"Cannot handle type " + Enum.GetName(typeof(BaseTypes), constDeclaration.Type.Type),
nameof(constDeclaration))
};
return(varDeclarator.WithInitializer(assignment));
}
/// <summary>
/// System.Object paramName [= ...];
/// </summary>
protected internal virtual LocalDeclarationStatementSyntax DeclareLocal(ITypeInfo type, string name, ExpressionSyntax?initializer = null)
{
VariableDeclaratorSyntax declarator = VariableDeclarator
(
identifier: Identifier(name)
);
if (initializer != null)
{
declarator = declarator.WithInitializer
(
initializer: EqualsValueClause
(
initializer
)
);
}
return(LocalDeclarationStatement
(
declaration: VariableDeclaration
(
type: CreateType(type),
variables: SeparatedList(new List <VariableDeclaratorSyntax>
{
declarator
})
)
));
}
protected LocalDeclarationStatementSyntax ResolveLocal(ITypeInfo type, string name, ExpressionSyntax?initializer = null)
{
VariableDeclaratorSyntax declarator = VariableDeclarator
(
identifier: Identifier(name)
);
if (initializer is not null)
{
declarator = declarator.WithInitializer
(
initializer: EqualsValueClause
(
initializer
)
);
}
return(LocalDeclarationStatement
(
declaration: VariableDeclaration
(
type: ResolveType(type),
variables: SingletonSeparatedList(declarator)
)
));
}
public override SyntaxNode VisitVariableDeclarator(VariableDeclaratorSyntax node)
{
if (node.Initializer == null)
{
return(base.VisitVariableDeclarator(node));
}
if (node.Parent is VariableDeclarationSyntax == false)
{
return(base.VisitVariableDeclarator(node));
}
if (node.Parent.Parent is FieldDeclarationSyntax == false)
{
return(base.VisitVariableDeclarator(node));
}
if ((node.Parent.Parent as FieldDeclarationSyntax).Modifiers.Any(x => x.ValueText == "const"))
{
return(base.VisitVariableDeclarator(node));
}
var value = node.Initializer.Value;
if (value is LiteralExpressionSyntax)
{
var variableTypeNode = GetSystemTypeOfTypeNode((node.Parent as VariableDeclarationSyntax));
var valueObj = (value as LiteralExpressionSyntax).Token.Value;
if (TypesMapItem.GetAllPredefinedTypesDic().ContainsKey(variableTypeNode))
{
var typeItem = TypesMapItem.GetAllPredefinedTypesDic()[variableTypeNode];
if ((typeItem.DefaultValue == null && valueObj != null) || (typeItem.DefaultValue != null && !typeItem.DefaultValue.Equals(valueObj)))
{
return(base.VisitVariableDeclarator(node));
}
}
else
{
if (valueObj != null)
{
return(base.VisitVariableDeclarator(node));
}
}
node = node.WithInitializer(null).WithoutTrailingTrivia();
}
//else if (value is DefaultExpressionSyntax)
//{
// node = node.WithInitializer(null).WithoutTrailingTrivia();
//}
//else if (value is ObjectCreationExpressionSyntax)
//{
// if (variableTypeNode.IsKind(SyntaxKind.PredefinedType))
// {
// node = node.WithInitializer(null).WithoutTrailingTrivia();
// }
//}
return(base.VisitVariableDeclarator(node));
}
/// <summary>
/// Declares the variables in the field along with their initializers.
/// <para>In the example "private int testInt = 0", "testInt" would be the variable. </para>
/// </summary>
private static VariableDeclaratorSyntax CreateVariableDeclaratorSyntax(FieldGenerationData data)
{
VariableDeclaratorSyntax declaratorSyntax = SyntaxFactory.VariableDeclarator(data.m_VariableName);
if (!data.m_UseInitializer)
{
return(declaratorSyntax);
}
if (VariableTypeCheckerUtility.IsVariableInitializableWithoutNewKeyword(data.m_VariableType))
{
return(declaratorSyntax.WithInitializer(CreateFieldInitializer(data)));
}
else
{
return(declaratorSyntax.WithInitializer(CreateNewFieldInitializer(data)));
}
}
public static Task <Document> RemoveRedundantAssignmentAfterLocalDeclarationAsync(
Document document,
VariableDeclaratorSyntax declarator,
CancellationToken cancellationToken = default)
{
var declaration = (VariableDeclarationSyntax)declarator.Parent;
var localDeclaration = (LocalDeclarationStatementSyntax)declaration.Parent;
StatementListInfo statementsInfo = SyntaxInfo.StatementListInfo(localDeclaration);
SyntaxList <StatementSyntax> statements = statementsInfo.Statements;
int index = statements.IndexOf(localDeclaration);
StatementSyntax nextStatement = statements[index + 1];
var expressionStatement = (ExpressionStatementSyntax)nextStatement;
var assignment = (AssignmentExpressionSyntax)expressionStatement.Expression;
ExpressionSyntax right = assignment.Right;
EqualsValueClauseSyntax initializer = declarator.Initializer;
ExpressionSyntax value = initializer?.Value;
VariableDeclaratorSyntax newDeclarator = (value != null)
? declarator.ReplaceNode(value, right)
: declarator.WithInitializer(EqualsValueClause(right));
LocalDeclarationStatementSyntax newLocalDeclaration = localDeclaration.ReplaceNode(declarator, newDeclarator);
SyntaxTriviaList trailingTrivia = localDeclaration.GetTrailingTrivia();
if (!trailingTrivia.IsEmptyOrWhitespace())
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(trailingTrivia.Concat(nextStatement.GetTrailingTrivia()));
}
else
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(nextStatement.GetTrailingTrivia());
}
SyntaxTriviaList leadingTrivia = nextStatement.GetLeadingTrivia();
if (!leadingTrivia.IsEmptyOrWhitespace())
{
newLocalDeclaration = newLocalDeclaration.WithLeadingTrivia(newLocalDeclaration.GetLeadingTrivia().Concat(leadingTrivia));
}
SyntaxList <StatementSyntax> newStatements = statements
.Replace(localDeclaration, newLocalDeclaration)
.RemoveAt(index + 1);
return(document.ReplaceStatementsAsync(statementsInfo, newStatements, cancellationToken));
}
public static Task <Document> RefactorAsync(
Document document,
VariableDeclaratorSyntax declarator,
CancellationToken cancellationToken)
{
var declaration = (VariableDeclarationSyntax)declarator.Parent;
var localDeclaration = (LocalDeclarationStatementSyntax)declaration.Parent;
StatementContainer container = StatementContainer.Create(localDeclaration);
SyntaxList <StatementSyntax> statements = container.Statements;
int index = statements.IndexOf(localDeclaration);
StatementSyntax nextStatement = statements[index + 1];
var expressionStatement = (ExpressionStatementSyntax)nextStatement;
var assignment = (AssignmentExpressionSyntax)expressionStatement.Expression;
ExpressionSyntax right = assignment.Right;
EqualsValueClauseSyntax initializer = declarator.Initializer;
ExpressionSyntax value = initializer?.Value;
VariableDeclaratorSyntax newDeclarator = (value != null)
? declarator.ReplaceNode(value, right)
: declarator.WithInitializer(EqualsValueClause(right));
LocalDeclarationStatementSyntax newLocalDeclaration = localDeclaration.ReplaceNode(declarator, newDeclarator);
SyntaxTriviaList trailingTrivia = localDeclaration.GetTrailingTrivia();
if (trailingTrivia.Any(f => !f.IsWhitespaceOrEndOfLineTrivia()))
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(trailingTrivia.Concat(nextStatement.GetTrailingTrivia()));
}
else
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(nextStatement.GetTrailingTrivia());
}
SyntaxTriviaList leadingTrivia = nextStatement.GetLeadingTrivia();
if (leadingTrivia.Any(f => !f.IsWhitespaceOrEndOfLineTrivia()))
{
newLocalDeclaration = newLocalDeclaration.WithLeadingTrivia(newLocalDeclaration.GetLeadingTrivia().Concat(leadingTrivia));
}
SyntaxList <StatementSyntax> newStatements = statements
.Replace(localDeclaration, newLocalDeclaration)
.RemoveAt(index + 1);
return(document.ReplaceNodeAsync(container.Node, container.NodeWithStatements(newStatements), cancellationToken));
}
public static VariableDeclaratorSyntax WithSuppressNullableWarningExpression(
this VariableDeclaratorSyntax variable) =>
variable
.WithInitializer(
EqualsValueClause(
PostfixUnaryExpression(
SyntaxKind.SuppressNullableWarningExpression,
LiteralExpression(
SyntaxKind.DefaultLiteralExpression,
Token(SyntaxKind.DefaultKeyword)))));
public CSharpSyntaxNode Convert(VariableDeclarationNode node)
{
//TODO: name is ArrayBindingPattern
VariableDeclaratorSyntax csVariable = SyntaxFactory.VariableDeclarator(node.Name.Text);
if (node.Initializer != null)
{
csVariable = csVariable.WithInitializer(SyntaxFactory.EqualsValueClause(node.Initializer.ToCsNode <ExpressionSyntax>()));
}
return(csVariable);
}
public override SyntaxNode VisitVariableDeclarator(VariableDeclaratorSyntax node)
{
if (node.Identifier.ValueText == _variableName)
{
return(node.WithInitializer(
node.Initializer.WithValue(
SyntaxFactory.LiteralExpression(_kind, _creator())
)
));
}
return(base.VisitVariableDeclarator(node));
}
public SyntaxNode Substitute()
{
var literal = TryCreateLiteral();
if (literal != null)
{
return(node.WithInitializer(SyntaxFactory.EqualsValueClause(literal)));
}
Log.Trace(string.Format("Matched field {0} with substitution coming from cmd line but type conversion failed", symbol));
return(node);
}
protected override LocalDeclarationStatementSyntax CreateNewStatement()
{
ConditionalExpressionSyntax conditionalExpression = IfRefactoringHelper.CreateConditionalExpression(IfStatement.Condition, WhenTrue, WhenFalse);
VariableDeclaratorSyntax declarator = Statement.Declaration.Variables[0];
EqualsValueClauseSyntax initializer = declarator.Initializer;
EqualsValueClauseSyntax newInitializer = (initializer != null)
? initializer.WithValue(conditionalExpression)
: EqualsValueClause(conditionalExpression);
return(Statement.ReplaceNode(declarator, declarator.WithInitializer(newInitializer)));
}
/// <summary>
/// Normalizes the <paramref name="declaration" />.
/// </summary>
public override SyntaxNode VisitVariableDeclarator(VariableDeclaratorSyntax declaration)
{
var objectCreation = declaration?.Initializer?.Value as ObjectCreationExpressionSyntax;
if (objectCreation == null)
{
return(declaration);
}
var symbol = SemanticModel.GetDeclaredSymbol(declaration);
if (symbol == null)
{
return(declaration);
}
ITypeSymbol type;
string name;
switch (symbol.Kind)
{
case SymbolKind.Field:
var fieldSymbol = ((IFieldSymbol)symbol);
type = fieldSymbol.Type;
name = fieldSymbol.Name;
break;
case SymbolKind.Local:
var localSymbol = ((ILocalSymbol)symbol);
type = localSymbol.Type;
name = localSymbol.Name;
break;
default:
return(declaration);
}
var fault = SemanticModel.GetTypeSymbol <Fault>();
if (!type.Equals(fault) && !type.IsDerivedFrom(fault))
{
return(declaration);
}
return(declaration.WithInitializer(declaration.Initializer.WithValue(AddNameInitializer(fault, objectCreation, name))));
}
private static StatementSyntax CreateStaticDefinitionId(DatasetDefinition datasetDefinition)
{
SyntaxToken token = SyntaxFactory.Literal(datasetDefinition.Id);
VariableDeclaratorSyntax variable = SyntaxFactory.VariableDeclarator(
SyntaxFactory.SingletonSeparatedList(SyntaxFactory.ModifiedIdentifier("DatasetDefinitionId")));
variable = variable.WithAsClause(
SyntaxFactory.SimpleAsClause(SyntaxFactory.PredefinedType(SyntaxFactory.Token(SyntaxKind.StringKeyword))));
variable = variable.WithInitializer(
SyntaxFactory.EqualsValue(SyntaxFactory.LiteralExpression(SyntaxKind.StringLiteralExpression,
token)));
return(SyntaxFactory.FieldDeclaration(
SyntaxFactory.List <AttributeListSyntax>(),
SyntaxFactory.TokenList(SyntaxFactory.Token(SyntaxKind.PublicKeyword),
SyntaxFactory.Token(SyntaxKind.SharedKeyword)),
SyntaxFactory.SingletonSeparatedList(variable)));
}
public static FieldDeclarationSyntax DeclareField(Type fieldType, string name,
AccessibilityFlags accessibility = AccessibilityFlags.Default)
{
VariableDeclarationSyntax varDeclaration = SyntaxFactory.VariableDeclaration(fieldType.ToTypeSyntax());
VariableDeclaratorSyntax varDeclarator = SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(name));
if (fieldType.IsVsArrayType())
{
ObjectCreationExpressionSyntax exp = SyntaxFactory.ObjectCreationExpression(fieldType.ToTypeSyntax())
.WithArgumentList(SyntaxFactory.ArgumentList());
varDeclarator = varDeclarator.WithInitializer(SyntaxFactory.EqualsValueClause(exp));
}
FieldDeclarationSyntax fieldDeclaration = SyntaxFactory.FieldDeclaration(
varDeclaration.WithVariables(SyntaxFactory.SingletonSeparatedList(varDeclarator)))
.WithModifiers(SyntaxFactory.TokenList(AccessibilityToSyntaxToken(accessibility).ToArray()));
return(fieldDeclaration);
}
public static LocalDeclarationStatementSyntax Declare(TypeSyntax typeSyntax, string identifier, bool initializeToDefault)
{
VariableDeclaratorSyntax decl = VariableDeclarator(identifier);
if (initializeToDefault)
{
decl = decl.WithInitializer(
EqualsValueClause(
LiteralExpression(SyntaxKind.DefaultLiteralExpression)));
}
// <type> <identifier>;
// or
// <type> <identifier> = default;
return(LocalDeclarationStatement(
VariableDeclaration(
typeSyntax,
SingletonSeparatedList(decl))));
}
public static LocalDeclarationStatementSyntax DeclareLocalVariable(string typeName, string variableName,
ExpressionSyntax initValue = null,
VariableDeclarationType variableDeclarationType = VariableDeclarationType.ExplicitType)
{
VariableDeclaratorSyntax varDeclarator = SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(variableName));
if (initValue != null)
{
varDeclarator = varDeclarator.WithInitializer(SyntaxFactory.EqualsValueClause(initValue));
}
VariableDeclarationSyntax varDeclaration = variableDeclarationType == VariableDeclarationType.InferredType
? SyntaxFactory.VariableDeclaration(SyntaxFactory.IdentifierName("var"))
: SyntaxFactory.VariableDeclaration(SyntaxFactory.IdentifierName(typeName));
varDeclaration = varDeclaration.WithVariables(SyntaxFactory.SingletonSeparatedList(varDeclarator));
return(SyntaxFactory.LocalDeclarationStatement(varDeclaration));
}
public static LocalDeclarationStatementSyntax Declare(TypeSyntax typeSyntax, string identifier, ExpressionSyntax?initializer)
{
VariableDeclaratorSyntax decl = VariableDeclarator(identifier);
if (initializer is not null)
{
decl = decl.WithInitializer(
EqualsValueClause(
initializer));
}
// <type> <identifier>;
// or
// <type> <identifier> = <initializer>;
return(LocalDeclarationStatement(
VariableDeclaration(
typeSyntax,
SingletonSeparatedList(decl))));
}
private static StatementSyntax GetRequestInitialization(SyntaxToken queryStringDictToken, SyntaxToken bodyDictToken,
VariableDeclaratorSyntax descriptorDeclaration, VariableDeclaratorSyntax requestDeclaration)
{
var remoteRequestArguments = ArgumentList(SeparatedList(
new[]
{
Argument(IdentifierName(descriptorDeclaration.Identifier)),
Argument(GetCallingExpression(queryStringDictToken, nameof(ImmutableDictionary <string, object> .Builder.ToImmutable))),
Argument(GetCallingExpression(bodyDictToken, nameof(ImmutableDictionary <string, object> .Builder.ToImmutable)))
}
));
var requestInitializer =
EqualsValueClause(InvocationExpression(ObjectCreationExpression(ParseTypeName(nameof(RemoteRequest))), remoteRequestArguments));
var requestInitialization = LocalDeclarationStatement(VariableDeclaration(ParseTypeName("var"))
.AddVariables(requestDeclaration.WithInitializer(requestInitializer)));
return(requestInitialization);
}
private static VariableDeclaratorSyntax GetNewDeclarator(
VariableDeclaratorSyntax declarator,
TypeSyntax type,
ITypeSymbol typeSymbol)
{
ExpressionSyntax value = SyntaxUtility.CreateDefaultValue(typeSymbol, type);
EqualsValueClauseSyntax @default = EqualsValueClause(value);
if (declarator.Initializer == null || declarator.Initializer.IsMissing)
{
return(declarator
.WithIdentifier(declarator.Identifier.WithoutTrailingTrivia())
.WithInitializer(@default.WithTrailingTrivia(declarator.Identifier.TrailingTrivia)));
}
else
{
return(declarator
.WithInitializer(@default.WithTriviaFrom(declarator.Initializer.EqualsToken)));
}
}
private static StatementSyntax GetDescriptorInitialization(IReadOnlyDictionary <string, object> attributeData, VariableDeclaratorSyntax descriptorDeclaration)
{
if (!attributeData.ContainsKey(nameof(WebInvokeAttribute.Method)))
{
throw new InvalidOperationException("Cannot generate call without specifying HTTP method");
}
if (!attributeData.TryGetValue(nameof(WebInvokeAttribute.UriTemplate), out var uriTemplate))
{
uriTemplate = string.Empty;
}
if (!attributeData.TryGetValue(nameof(WebInvokeAttribute.RequestFormat), out var requestFormat))
{
requestFormat = default(OperationWebMessageFormat);
}
if (!attributeData.TryGetValue(nameof(WebInvokeAttribute.ResponseFormat), out var responseFormat))
{
responseFormat = default(OperationWebMessageFormat);
}
var remoteOperationDescriptorArguments = ArgumentList(SeparatedList(
new[]
{
Argument(LiteralExpression(SyntaxKind.StringLiteralExpression, Literal(attributeData[nameof(WebInvokeAttribute.Method)].ToString()))),
Argument(LiteralExpression(SyntaxKind.StringLiteralExpression,
Literal(uriTemplate.ToString()))),
Argument(MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, ParseTypeName(nameof(OperationWebMessageFormat)),
IdentifierName(Enum.GetName(typeof(OperationWebMessageFormat), requestFormat)))),
Argument(MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, ParseTypeName(nameof(OperationWebMessageFormat)),
IdentifierName(Enum.GetName(typeof(OperationWebMessageFormat), responseFormat)))),
}
));
var descriptorInitializer = EqualsValueClause(InvocationExpression(ObjectCreationExpression(ParseTypeName(nameof(RemoteOperationDescriptor))),
remoteOperationDescriptorArguments));
var descriptorInitialization = LocalDeclarationStatement(VariableDeclaration(ParseTypeName("var"))
.AddVariables(descriptorDeclaration.WithInitializer(descriptorInitializer)));
return(descriptorInitialization);
}
private static VariableDeclaratorSyntax GetNewDeclarator(
VariableDeclaratorSyntax declarator,
TypeSyntax type,
ITypeSymbol typeSymbol)
{
ExpressionSyntax value = typeSymbol.GetDefaultValueSyntax(type);
EqualsValueClauseSyntax initializer = declarator.Initializer;
EqualsValueClauseSyntax newInitializer = EqualsValueClause(value);
if (initializer == null || initializer.IsMissing)
{
return(declarator
.WithIdentifier(declarator.Identifier.WithoutTrailingTrivia())
.WithInitializer(newInitializer.WithTrailingTrivia(declarator.Identifier.TrailingTrivia)));
}
else
{
return(declarator
.WithInitializer(newInitializer.WithTriviaFrom(initializer.EqualsToken)));
}
}
protected FieldDeclarationSyntax ResolveStaticGlobal(ITypeInfo type, string name, ExpressionSyntax?initializer = null, bool @private = true)
{
VariableDeclaratorSyntax declarator = VariableDeclarator
(
identifier: Identifier(name)
);
if (initializer is not null)
{
declarator = declarator.WithInitializer
(
initializer: EqualsValueClause
(
initializer
)
);
}
return(FieldDeclaration
(
declaration: VariableDeclaration
(
type: ResolveType(type),
variables: SingletonSeparatedList(declarator)
)
)
.WithModifiers
(
TokenList
(
new SyntaxToken[]
{
Token(@private ? SyntaxKind.PrivateKeyword : SyntaxKind.PublicKeyword),
Token(SyntaxKind.StaticKeyword),
Token(SyntaxKind.ReadOnlyKeyword)
}
)
));
}
public static Task <Document> RefactorAsync(
Document document,
LocalDeclarationStatementSyntax localDeclaration,
VariableDeclaratorSyntax declarator,
ITypeSymbol typeSymbol,
CancellationToken cancellationToken = default)
{
VariableDeclaratorSyntax newDeclarator = GetNewDeclarator(localDeclaration.Declaration.Type.WithoutTrivia());
LocalDeclarationStatementSyntax newNode = localDeclaration.ReplaceNode(declarator, newDeclarator);
if (localDeclaration.SemicolonToken.IsMissing &&
localDeclaration.Declaration.Variables.Last().Equals(declarator))
{
newNode = newNode.WithSemicolonToken(SemicolonToken().WithTrailingTrivia(newDeclarator.GetTrailingTrivia()));
}
return(document.ReplaceNodeAsync(localDeclaration, newNode, cancellationToken));
VariableDeclaratorSyntax GetNewDeclarator(TypeSyntax type)
{
ExpressionSyntax value = typeSymbol.GetDefaultValueSyntax(document.GetDefaultSyntaxOptions(), type);
EqualsValueClauseSyntax initializer = declarator.Initializer;
EqualsValueClauseSyntax newInitializer = EqualsValueClause(value);
if (initializer?.IsMissing != false)
{
return(declarator
.WithIdentifier(declarator.Identifier.WithoutTrailingTrivia())
.WithInitializer(newInitializer.WithTrailingTrivia(declarator.Identifier.TrailingTrivia)));
}
else
{
return(declarator
.WithInitializer(newInitializer.WithTriviaFrom(initializer.EqualsToken)));
}
}
}
private static Task <Document> RefactorAsync(
Document document,
SingleLocalDeclarationStatementInfo localInfo,
TypeSyntax type,
CancellationToken cancellationToken)
{
LocalDeclarationStatementSyntax localStatement = localInfo.Statement;
StatementsInfo statementsInfo = SyntaxInfo.StatementsInfo(localStatement);
int index = statementsInfo.IndexOf(localStatement);
VariableDeclaratorSyntax declarator = localInfo.Declarator;
VariableDeclaratorSyntax newDeclarator = declarator.WithInitializer(null);
VariableDeclarationSyntax newDeclaration = localInfo.Declaration.ReplaceNode(declarator, newDeclarator);
if (type != null)
{
newDeclaration = newDeclaration.WithType(type.WithTriviaFrom(newDeclaration.Type));
}
LocalDeclarationStatementSyntax newLocalStatement = localStatement
.WithDeclaration(newDeclaration)
.WithTrailingTrivia(NewLine())
.WithFormatterAnnotation();
ExpressionStatementSyntax assignmentStatement = SimpleAssignmentStatement(IdentifierName(localInfo.Identifier), localInfo.Initializer.Value)
.WithTrailingTrivia(localStatement.GetTrailingTrivia())
.WithFormatterAnnotation();
StatementsInfo newStatementsInfo = statementsInfo
.Insert(index + 1, assignmentStatement)
.ReplaceAt(index, newLocalStatement);
return(document.ReplaceStatementsAsync(statementsInfo, newStatementsInfo, cancellationToken));
}
/// <summary>
/// Normalizes the <paramref name="declaration" />.
/// </summary>
public override SyntaxNode VisitVariableDeclarator(VariableDeclaratorSyntax declaration)
{
var objectCreation = declaration?.Initializer?.Value as ObjectCreationExpressionSyntax;
if (objectCreation == null)
return declaration;
var symbol = SemanticModel.GetDeclaredSymbol(declaration);
if (symbol == null)
return declaration;
ITypeSymbol type;
string name;
switch (symbol.Kind)
{
case SymbolKind.Field:
var fieldSymbol = ((IFieldSymbol)symbol);
type = fieldSymbol.Type;
name = fieldSymbol.Name;
break;
case SymbolKind.Local:
var localSymbol = ((ILocalSymbol)symbol);
type = localSymbol.Type;
name = localSymbol.Name;
break;
default:
return declaration;
}
var fault = SemanticModel.GetTypeSymbol<Fault>();
if (!type.Equals(fault) && !type.IsDerivedFrom(fault))
return declaration;
return declaration.WithInitializer(declaration.Initializer.WithValue(AddNameInitializer(fault, objectCreation, name)));
}
public static Task <Document> RefactorAsync(Document document, IfAnalysis ifAnalysis, CancellationToken cancellationToken = default)
{
switch (ifAnalysis.Kind)
{
case IfAnalysisKind.IfElseToAssignmentWithCoalesceExpression:
{
return(IfElseToAssignmentWithCoalesceExpressionAsync(document, (IfElseToAssignmentWithCoalesceExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToAssignmentWithConditionalExpression:
{
return(IfElseToAssignmentWithConditionalExpressionAsync(document, (IfElseToAssignmentWithConditionalExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.AssignmentAndIfToAssignmentWithConditionalExpression:
{
var analysis = (AssignmentAndIfToAssignmentWithConditionalExpressionAnalysis)ifAnalysis;
ConditionalExpressionSyntax conditionalExpression = CreateConditionalExpression(analysis.IfStatement.Condition, analysis.WhenTrue, analysis.WhenFalse);
ExpressionStatementSyntax newStatement = analysis.Statement.ReplaceNode(analysis.Right, conditionalExpression);
return(ToAssignmentWithConditionalExpressionAsync(document, analysis, newStatement, cancellationToken));
}
case IfAnalysisKind.LocalDeclarationAndIfElseAssignmentWithConditionalExpression:
{
var analysis = (LocalDeclarationAndIfElseToAssignmentWithConditionalExpressionAnalysis)ifAnalysis;
ConditionalExpressionSyntax conditionalExpression = CreateConditionalExpression(analysis.IfStatement.Condition, analysis.WhenTrue, analysis.WhenFalse);
VariableDeclaratorSyntax declarator = analysis.Statement.Declaration.Variables[0];
EqualsValueClauseSyntax initializer = declarator.Initializer;
EqualsValueClauseSyntax newInitializer = (initializer != null)
? initializer.WithValue(conditionalExpression)
: EqualsValueClause(conditionalExpression);
LocalDeclarationStatementSyntax newStatement = analysis.Statement.ReplaceNode(declarator, declarator.WithInitializer(newInitializer));
return(ToAssignmentWithConditionalExpressionAsync(document, analysis, newStatement, cancellationToken));
}
case IfAnalysisKind.IfElseToAssignmentWithExpression:
{
return(IfElseToAssignmentWithExpressionAsync(document, (IfElseToAssignmentWithExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToAssignmentWithCondition:
{
return(IfElseToAssignmentWithConditionAsync(document, (IfElseToAssignmentWithConditionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToReturnWithCoalesceExpression:
case IfAnalysisKind.IfElseToYieldReturnWithCoalesceExpression:
case IfAnalysisKind.IfReturnToReturnWithCoalesceExpression:
{
return(IfToReturnWithCoalesceExpressionAsync(document, (IfToReturnWithCoalesceExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToReturnWithConditionalExpression:
{
return(IfElseToReturnWithConditionalExpressionAsync(document, (IfElseToReturnWithConditionalExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToReturnWithBooleanExpression:
{
return(IfElseToReturnWithBooleanExpressionAsync(document, (IfElseToReturnWithBooleanExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToReturnWithExpression:
case IfAnalysisKind.IfElseToYieldReturnWithExpression:
case IfAnalysisKind.IfReturnToReturnWithExpression:
{
return(IfToReturnWithExpressionAsync(document, (IfToReturnWithExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToYieldReturnWithConditionalExpression:
{
return(IfElseToYieldReturnWithConditionalExpressionAsync(document, (IfElseToYieldReturnWithConditionalExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfElseToYieldReturnWithBooleanExpression:
{
return(IfElseToYieldReturnWithBooleanExpressionAsync(document, (IfElseToYieldReturnWithBooleanExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfReturnToReturnWithConditionalExpression:
{
return(IfReturnToReturnWithConditionalExpressionAsync(document, (IfReturnToReturnWithConditionalExpressionAnalysis)ifAnalysis, cancellationToken));
}
case IfAnalysisKind.IfReturnToReturnWithBooleanExpression:
{
return(IfReturnToReturnWithBooleanExpressionAsync(document, (IfReturnToReturnWithBooleanExpressionAnalysis)ifAnalysis, cancellationToken));
}
default:
{
throw new InvalidOperationException();
}
}
}
public static void ReplaceMember(DocumentEditor editor, SemanticModel model, VariableDeclaratorSyntax original, InvocationExpressionSyntax avaloniaInvocation)
{
var parent = (VariableDeclarationSyntax)original.Parent;
if (parent.Variables.Count > 1)
{
editor.ReplaceNode(original.Initializer.Value, avaloniaInvocation);
}
else
{
var replacedParent = parent
.WithType((TypeSyntax)editor.Generator.TypeExpression(model.GetSpeculativeTypeInfo(original.SpanStart, avaloniaInvocation, SpeculativeBindingOption.BindAsExpression).Type))
.WithVariables(parent.Variables.Replace(parent.Variables[0], original.WithInitializer(original.Initializer.WithValue(avaloniaInvocation))));
var fieldDeclaration = parent.Parent as FieldDeclarationSyntax;
editor.ReplaceNode(fieldDeclaration, fieldDeclaration.WithDeclaration(replacedParent));
}
}
public static async Task <Document> RefactorAsync(
Document document,
VariableDeclaratorSyntax declarator,
CancellationToken cancellationToken)
{
var declaration = (VariableDeclarationSyntax)declarator.Parent;
var localDeclaration = (LocalDeclarationStatementSyntax)declaration.Parent;
StatementContainer container;
if (StatementContainer.TryCreate(localDeclaration, out container))
{
SyntaxList <StatementSyntax> statements = container.Statements;
int index = statements.IndexOf(localDeclaration);
StatementSyntax nextStatement = statements[index + 1];
var expressionStatement = (ExpressionStatementSyntax)nextStatement;
var assignment = (AssignmentExpressionSyntax)expressionStatement.Expression;
ExpressionSyntax right = assignment.Right;
EqualsValueClauseSyntax initializer = declarator.Initializer;
ExpressionSyntax value = initializer?.Value;
VariableDeclaratorSyntax newDeclarator = (value != null)
? declarator.ReplaceNode(value, right)
: declarator.WithInitializer(EqualsValueClause(right));
LocalDeclarationStatementSyntax newLocalDeclaration = localDeclaration.ReplaceNode(declarator, newDeclarator);
SyntaxTriviaList trailingTrivia = nextStatement.GetTrailingTrivia();
IEnumerable <SyntaxTrivia> trivia = container
.Node
.DescendantTrivia(TextSpan.FromBounds(localDeclaration.Span.End, right.SpanStart));
if (!trivia.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(trivia.Concat(trailingTrivia));
}
else
{
newLocalDeclaration = newLocalDeclaration.WithTrailingTrivia(trailingTrivia);
}
SyntaxList <StatementSyntax> newStatements = statements
.Replace(localDeclaration, newLocalDeclaration)
.RemoveAt(index + 1);
return(await document.ReplaceNodeAsync(container.Node, container.NodeWithStatements(newStatements), cancellationToken).ConfigureAwait(false));
}
Debug.Assert(false, "");
return(document);
}
