public async Task <Document> RefactorAsync(
Document document,
ExpressionStatementSyntax expressionStatement,
CancellationToken cancellationToken)
{
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
InvocationExpressionSyntax invocationExpression = GetInvocationExpression(expressionStatement);
semanticModel.TryGetMethodInfo(invocationExpression, out MethodInfo methodInfo, cancellationToken);
MemberInvocationExpressionInfo invocationInfo = SyntaxInfo.MemberInvocationExpressionInfo(invocationExpression);
ITypeSymbol typeSymbol = methodInfo.ReturnType;
string name = ((IdentifierNameSyntax)WalkDownMethodChain(invocationInfo).Expression).Identifier.ValueText;
StatementsInfo statementsInfo = SyntaxInfo.StatementsInfo(expressionStatement);
SyntaxList <StatementSyntax> statements = statementsInfo.Statements;
int index = statements.IndexOf(expressionStatement);
string indentation = CSharpFormatter.GetIncreasedIndentation(expressionStatement, cancellationToken).ToString();
var sb = new StringBuilder(invocationExpression.ToString());
int j = index;
while (j < statements.Count - 1)
{
StatementSyntax statement = statements[j + 1];
if (!IsFixableStatement(statement, name, typeSymbol, semanticModel, cancellationToken))
{
break;
}
sb.AppendLine();
sb.Append(indentation);
sb.Append(GetTextToAppend((ExpressionStatementSyntax)statement));
j++;
}
StatementSyntax lastStatement = statements[j];
SyntaxList <StatementSyntax> newStatements = statements;
while (j > index)
{
newStatements = newStatements.RemoveAt(j);
j--;
}
ExpressionSyntax newInvocationExpression = SyntaxFactory.ParseExpression(sb.ToString());
SyntaxTriviaList trailingTrivia = statementsInfo
.Node
.DescendantTrivia(TextSpan.FromBounds(invocationExpression.Span.End, lastStatement.Span.End))
.ToSyntaxTriviaList()
.EmptyIfWhitespace()
.AddRange(lastStatement.GetTrailingTrivia());
ExpressionStatementSyntax newExpressionStatement = expressionStatement
.ReplaceNode(invocationExpression, newInvocationExpression)
.WithLeadingTrivia(expressionStatement.GetLeadingTrivia())
.WithTrailingTrivia(trailingTrivia)
.WithFormatterAndSimplifierAnnotations();
newStatements = newStatements.ReplaceAt(index, newExpressionStatement);
return(await document.ReplaceStatementsAsync(statementsInfo, newStatements, cancellationToken).ConfigureAwait(false));
}
public static async Task <Document> RefactorAsync(
Document document,
ExpressionStatementSyntax expressionStatement,
CancellationToken cancellationToken)
{
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
INamedTypeSymbol symbol = semanticModel.GetTypeByMetadataName(MetadataNames.System_Text_StringBuilder);
var invocationExpression = (InvocationExpressionSyntax)expressionStatement.Expression;
MemberInvocationExpression memberInvocation = MemberInvocationExpression.Create(invocationExpression);
ExpressionSyntax expression = GetFirstInvocationInMethodChain(memberInvocation, symbol, semanticModel, cancellationToken).Expression;
StatementContainer statementContainer = StatementContainer.Create(expressionStatement);
SyntaxList <StatementSyntax> statements = statementContainer.Statements;
int index = statements.IndexOf(expressionStatement);
string indentation = CSharpFormatter.GetIncreasedIndentation(expressionStatement, cancellationToken).ToString();
var sb = new StringBuilder(invocationExpression.ToString());
int j = index;
while (j < statements.Count - 1)
{
StatementSyntax statement = statements[j + 1];
if (!IsFixable(statement, expression, symbol, semanticModel, cancellationToken))
{
break;
}
sb.AppendLine();
sb.Append(indentation);
sb.Append(GetTextToAppend((ExpressionStatementSyntax)statement, symbol, semanticModel, cancellationToken));
j++;
}
StatementSyntax lastStatement = statements[j];
SyntaxList <StatementSyntax> newStatements = statements;
while (j > index)
{
newStatements = newStatements.RemoveAt(j);
j--;
}
ExpressionSyntax newInvocationExpression = SyntaxFactory.ParseExpression(sb.ToString());
SyntaxTriviaList trailingTrivia = statementContainer
.Node
.DescendantTrivia(TextSpan.FromBounds(invocationExpression.Span.End, lastStatement.Span.End))
.ToSyntaxTriviaList()
.EmptyIfWhitespace()
.AddRange(lastStatement.GetTrailingTrivia());
ExpressionStatementSyntax newExpressionStatement = expressionStatement
.WithExpression(newInvocationExpression)
.WithLeadingTrivia(expressionStatement.GetLeadingTrivia())
.WithTrailingTrivia(trailingTrivia)
.WithFormatterAndSimplifierAnnotations();
newStatements = newStatements.ReplaceAt(index, newExpressionStatement);
return(await document.ReplaceNodeAsync(statementContainer.Node, statementContainer.NodeWithStatements(newStatements), cancellationToken).ConfigureAwait(false));
}