private bool ContainsOneBlankLine(SyntaxTriviaList syntaxTriviaList)
{
int endOfLineCount = syntaxTriviaList.Count(syntaxTrivia => syntaxTrivia.IsKind(SyntaxKind.EndOfLineTrivia));
int singleCommentLineCount = syntaxTriviaList.Count(syntaxTrivia => syntaxTrivia.IsKind(SyntaxKind.SingleLineCommentTrivia));
int multiCommentLineCount = syntaxTriviaList.Count(syntaxTrivia => syntaxTrivia.IsKind(SyntaxKind.MultiLineCommentTrivia));
// Counting only the "blank lines", so lines with comments do not count
return(endOfLineCount - singleCommentLineCount - multiCommentLineCount == 1);
}
/// <summary>
/// The delegate that receives control when nodes, tokens and trivia are visited.
/// </summary>
/// <remarks>
/// This method performs most of the rendering work and for the most part simply displays the
/// <paramref name="treeElement"/> using its <c>ToString()</c> method with the text indented to reflect the position of
/// the child nodes and tokens. For example, to code
/// <code>
/// Console.WriteLine(new SyntaxTreeRenderer().Render("static void Main() {Console.WriteLine(\"Hello\");}"));
/// </code>
/// is rendered as
/// <code>
/// <![CDATA[
/// >Node CompilationUnit |static void Main() {Console.WriteLine("Hello");}| [0..46)
/// >Node MethodDeclaration |static void Main() {Console.WriteLine("Hello");}| [0..46)
/// Token StaticKeyword |static| [0..6) 1 trailing trivia Parent.Kind=MethodDeclaration
/// Trivia WhitespaceTrivia | | [6..7) for Token StaticKeyword
/// >Node PredefinedType |void| [7..11)
/// Token VoidKeyword |void| [7..11) 1 trailing trivia Parent.Kind=PredefinedType
/// Trivia WhitespaceTrivia | | [11..12) for Token VoidKeyword
/// <Node PredefinedType |void| [7..11)
/// Token IdentifierToken |Main| [12..16) Parent.Kind=MethodDeclaration
/// >Node ParameterList |()| [16..18)
/// Token OpenParenToken |(| [16..17) Parent.Kind=ParameterList
/// Token CloseParenToken |)| [17..18) 1 trailing trivia Parent.Kind=ParameterList
/// Trivia WhitespaceTrivia | | [18..19) for Token CloseParenToken
/// <Node ParameterList |()| [16..18)
/// >Node Block |{Console.WriteLine("Hello");}| [19..46)
/// Token OpenBraceToken |{| [19..20) Parent.Kind=Block
/// >Node ExpressionStatement |Console.WriteLine("Hello");| [20..45)
/// >Node InvocationExpression |Console.WriteLine("Hello")| [20..44)
/// >Node MemberAccessExpression |Console.WriteLine| [20..35)
/// >Node IdentifierName |Console| [20..27)
/// Token IdentifierToken |Console| [20..27) Parent.Kind=IdentifierName
/// <Node IdentifierName |Console| [20..27)
/// Token DotToken |.| [27..28) Parent.Kind=MemberAccessExpression
/// >Node IdentifierName |WriteLine| [28..35)
/// Token IdentifierToken |WriteLine| [28..35) Parent.Kind=IdentifierName
/// <Node IdentifierName |WriteLine| [28..35)
/// <Node MemberAccessExpression |Console.WriteLine| [20..35)
/// >Node ArgumentList |("Hello")| [35..44)
/// Token OpenParenToken |(| [35..36) Parent.Kind=ArgumentList
/// >Node Argument |"Hello"| [36..43)
/// >Node StringLiteralExpression |"Hello"| [36..43)
/// Token StringLiteralToken |"Hello"| [36..43) Parent.Kind=StringLiteralExpression
/// <Node StringLiteralExpression |"Hello"| [36..43)
/// <Node Argument |"Hello"| [36..43)
/// Token CloseParenToken |)| [43..44) Parent.Kind=ArgumentList
/// <Node ArgumentList |("Hello")| [35..44)
/// <Node InvocationExpression |Console.WriteLine("Hello")| [20..44)
/// Token SemicolonToken |;| [44..45) Parent.Kind=ExpressionStatement
/// <Node ExpressionStatement |Console.WriteLine("Hello");| [20..45)
/// Token CloseBraceToken |}| [45..46) Parent.Kind=Block
/// <Node Block |{Console.WriteLine("Hello");}| [19..46)
/// <Node MethodDeclaration |static void Main() {Console.WriteLine("Hello");}| [0..46)
/// Token EndOfFileToken || [46..46) Parent.Kind=CompilationUnit
/// <Node CompilationUnit |static void Main() {Console.WriteLine("Hello");}| [0..46)
/// ]]>
/// </code>
/// </remarks>
/// <param name="treeElement">A <see cref="SyntaxTreeElement"/> instance that contains the wrapped syntax tree element
/// currently processed.</param>
private void RenderElementCallback(SyntaxTreeElement treeElement)
{
Writer.Write("{0}{2}{1}",
Indent,
treeElement,
treeElement.IsNode ? '\u25BA'.ToString() : string.Empty);
if (treeElement.IsNode)
{
Indent = new string(' ', 4 * (++NestingLevel));
}
else if (treeElement.IsToken)
{
SyntaxToken token = treeElement.Token;
StringBuilder triviaInfo = new StringBuilder();
if (token.HasLeadingTrivia)
{
SyntaxTriviaList triviaList = token.LeadingTrivia;
triviaInfo.AppendFormat(" {0} leading trivia", triviaList.Count());
if (triviaList.Any(t => t.HasStructure))
{
triviaInfo.AppendFormat(" with {0} structured and the first is \"{1}\"",
triviaList.Count(t => t.HasStructure),
triviaList.First(t => t.HasStructure).ToString());
}
}
if (token.HasTrailingTrivia)
{
SyntaxTriviaList triviaList = token.TrailingTrivia;
triviaInfo.AppendFormat(" {0} trailing trivia", triviaList.Count());
if (triviaList.Any(t => t.HasStructure))
{
triviaInfo.AppendFormat(" with {0} structured and the first is \"{1}\"",
triviaList.Count(t => t.HasStructure),
triviaList.First(t => t.HasStructure).ToString());
}
}
Writer.Write(triviaInfo.ToString());
if (token.Parent != null)
{
Writer.Write(string.Format(" Parent.Kind={0}", token.Parent.Kind()));
}
}
else if (treeElement.IsTrivia)
{
Writer.Write(string.Format(" for Token {0}", treeElement.Trivia.Token.Kind()));
}
Writer.WriteLine();
}
protected SyntaxTriviaList CleanUpListWithNoWhitespaces(SyntaxTriviaList syntaxTrivias, bool itsForCloseBrace = false)
{
syntaxTrivias = ProcessSpecialTrivias(syntaxTrivias, itsForCloseBrace);
var specialTriviasCount =
syntaxTrivias
.Count(t =>
!t.IsKind(SyntaxKind.EndOfLineTrivia) && !t.IsKind(SyntaxKind.WhitespaceTrivia)
);
if (specialTriviasCount > 0)
{
return(CleanUpList(syntaxTrivias));
}
return(CleanUpList(syntaxTrivias, 0));
}
protected SyntaxTriviaList ProcessSpecialTrivias(SyntaxTriviaList syntaxTrivias, bool itsForCloseBrace)
{
if (CheckShortSyntax(syntaxTrivias, itsForCloseBrace))
{
return(syntaxTrivias);
}
var specialTriviasCount = syntaxTrivias.Count(t => !t.IsKind(SyntaxKind.EndOfLineTrivia) && !t.IsKind(SyntaxKind.WhitespaceTrivia));
var outputTriviasList = new List <SyntaxTrivia>();
var specialTiviasCount = 0;
var bAddedBlankLine = false;
for (var i = 0; i < syntaxTrivias.Count; i++)
{
var countOfChars = 0;
if (specialTiviasCount == specialTriviasCount)
{
if (itsForCloseBrace)
{
if (CheckOption((int)CleanupTypes.Remove_BLs_after_Open_Bracket_and_Before_Close_Brackets))
{
i += RemoveBlankDuplication(syntaxTrivias, SyntaxKind.EndOfLineTrivia, i) + 1;
if (RemoveBlankDuplication(syntaxTrivias, SyntaxKind.WhitespaceTrivia, i) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
}
i = syntaxTrivias.Count;
}
else
{
outputTriviasList.Add(syntaxTrivias[i]);
}
continue;
}
}
if
(
(
syntaxTrivias[i].IsKind(SyntaxKind.EndOfLineTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.WhitespaceTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.SingleLineCommentTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.MultiLineCommentTrivia)
) == false
)
{
outputTriviasList.Add(syntaxTrivias[i]);
specialTiviasCount++;
continue;
}
if (syntaxTrivias[i].IsKind(SyntaxKind.SingleLineCommentTrivia) || syntaxTrivias[i].IsKind(SyntaxKind.MultiLineCommentTrivia))
{
syntaxTrivias = Insert_Space_Before_Comment_Text(syntaxTrivias, syntaxTrivias[i]);
outputTriviasList.Add(syntaxTrivias[i]);
i++;
if (i < syntaxTrivias.Count && syntaxTrivias[i].IsKind(SyntaxKind.EndOfLineTrivia))
{
outputTriviasList.Add(syntaxTrivias[i]);
}
specialTiviasCount++;
continue;
}
if (CheckOption((int)CleanupTypes.Remove_DBL_Inside_Comments) == false)
{
outputTriviasList.Add(syntaxTrivias[i]);
continue;
}
if ((countOfChars = RemoveBlankDuplication(syntaxTrivias, SyntaxKind.EndOfLineTrivia, i)) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
i += countOfChars + 1;
bAddedBlankLine = true;
}
if ((countOfChars = RemoveBlankDuplication(syntaxTrivias, SyntaxKind.WhitespaceTrivia, i)) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
i += countOfChars;
}
else if (bAddedBlankLine)
{
i--;
}
bAddedBlankLine = false;
}
return(outputTriviasList.ToSyntaxTriviaList());
}
protected SyntaxTriviaList ProcessSpecialTrivias(SyntaxTriviaList syntaxTrivias, bool itsForCloseBrace)
{
if (CheckShortSyntax(syntaxTrivias, itsForCloseBrace))
{
return(syntaxTrivias);
}
var specialTriviasCount = syntaxTrivias.Count(t => !t.IsKind(SyntaxKind.EndOfLineTrivia) && !t.IsKind(SyntaxKind.WhitespaceTrivia));
var outputTriviasList = new List <SyntaxTrivia>();
var specialTiviasCount = 0;
var bAddedBlankLine = false;
for (var i = 0; i < syntaxTrivias.Count; i++)
{
var countOfChars = 0;
if (specialTiviasCount == specialTriviasCount)
{
if (itsForCloseBrace)
{
i += RemoveBlankDuplication(syntaxTrivias, SyntaxKind.EndOfLineTrivia, i) + 1;
if (RemoveBlankDuplication(syntaxTrivias, SyntaxKind.WhitespaceTrivia, i) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
}
i = syntaxTrivias.Count;
continue;
}
}
if
(
(
syntaxTrivias[i].IsKind(SyntaxKind.EndOfLineTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.WhitespaceTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.SingleLineCommentTrivia) ||
syntaxTrivias[i].IsKind(SyntaxKind.MultiLineCommentTrivia)
) == false
)
{
outputTriviasList.Add(syntaxTrivias[i]);
specialTiviasCount++;
continue;
}
if (syntaxTrivias[i].IsKind(SyntaxKind.SingleLineCommentTrivia) || syntaxTrivias[i].IsKind(SyntaxKind.MultiLineCommentTrivia))
{
if (syntaxTrivias[i].IsKind(SyntaxKind.SingleLineCommentTrivia))
{
var commentText = syntaxTrivias[i].ToFullString().Trim();
if (commentText.Length > 2 && commentText[2] != ' ')
{
commentText = $"{commentText.Substring(0, 2)} {commentText.Substring(2)}";
}
syntaxTrivias = syntaxTrivias.Replace(syntaxTrivias[i], SyntaxFactory.Comment(commentText));
}
outputTriviasList.Add(syntaxTrivias[i]);
i++;
if (i < syntaxTrivias.Count && syntaxTrivias[i].IsKind(SyntaxKind.EndOfLineTrivia))
{
outputTriviasList.Add(syntaxTrivias[i]);
}
specialTiviasCount++;
continue;
}
if ((countOfChars = RemoveBlankDuplication(syntaxTrivias, SyntaxKind.EndOfLineTrivia, i)) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
i += countOfChars + 1;
bAddedBlankLine = true;
}
if ((countOfChars = RemoveBlankDuplication(syntaxTrivias, SyntaxKind.WhitespaceTrivia, i)) != -1)
{
outputTriviasList.Add(syntaxTrivias[i]);
i += countOfChars;
}
else if (bAddedBlankLine)
{
i--;
}
bAddedBlankLine = false;
}
return(outputTriviasList.ToSyntaxTriviaList());
}