private static async Task <Document> RemoveEmptyFinallyClauseAsync(
Document document,
FinallyClauseSyntax finallyClause,
CancellationToken cancellationToken)
{
var tryStatement = (TryStatementSyntax)finallyClause.Parent;
SyntaxList <CatchClauseSyntax> catches = tryStatement.Catches;
if (catches.Any())
{
if (finallyClause.GetLeadingTrivia().IsEmptyOrWhitespace())
{
CatchClauseSyntax lastCatch = catches.Last();
if (lastCatch.GetTrailingTrivia().IsEmptyOrWhitespace())
{
TryStatementSyntax newTryStatement = tryStatement
.WithCatches(catches.Replace(lastCatch, lastCatch.WithTrailingTrivia(finallyClause.GetTrailingTrivia())))
.WithFinally(null);
return(await document.ReplaceNodeAsync(tryStatement, newTryStatement, cancellationToken).ConfigureAwait(false));
}
}
return(await document.RemoveNodeAsync(finallyClause, SyntaxRemoveOptions.KeepExteriorTrivia, cancellationToken).ConfigureAwait(false));
}
else
{
IEnumerable <StatementSyntax> newNodes = tryStatement
.Block
.Statements
.Select(f => f.WithFormatterAnnotation());
return(await document.ReplaceNodeAsync(tryStatement, newNodes, cancellationToken).ConfigureAwait(false));
}
}
public static async Task <Document> RefactorAsync(
Document document,
FinallyClauseSyntax finallyClause,
CancellationToken cancellationToken)
{
if (finallyClause.GetLeadingTrivia().IsEmptyOrWhitespace())
{
var tryStatement = (TryStatementSyntax)finallyClause.Parent;
SyntaxList <CatchClauseSyntax> catches = tryStatement.Catches;
CatchClauseSyntax lastCatch = catches[catches.Count - 1];
if (lastCatch.GetTrailingTrivia().IsEmptyOrWhitespace())
{
TryStatementSyntax newTryStatement = tryStatement
.WithCatches(catches.Replace(lastCatch, lastCatch.WithTrailingTrivia(finallyClause.GetTrailingTrivia())))
.WithFinally(null);
return(await document.ReplaceNodeAsync(tryStatement, newTryStatement, cancellationToken).ConfigureAwait(false));
}
}
return(await document.RemoveNodeAsync(finallyClause, SyntaxRemoveOptions.KeepExteriorTrivia, cancellationToken).ConfigureAwait(false));
}
private static SyntaxNode GetNewRoot(SyntaxNode oldRoot, FinallyClauseSyntax finallyClause)
{
if (finallyClause.GetLeadingTrivia().All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
var tryStatement = (TryStatementSyntax)finallyClause.Parent;
CatchClauseSyntax lastCatch = tryStatement.Catches[tryStatement.Catches.Count - 1];
if (lastCatch.GetTrailingTrivia().All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
TryStatementSyntax newTryStatement = tryStatement
.WithCatches(tryStatement.Catches.Replace(lastCatch, lastCatch.WithTrailingTrivia(finallyClause.GetTrailingTrivia())))
.WithFinally(null);
return(oldRoot.ReplaceNode(tryStatement, newTryStatement));
}
}
return(oldRoot.RemoveNode(finallyClause, SyntaxRemoveOptions.KeepExteriorTrivia));
}
