public static async Task <Document> RefactorAsync(
Document document,
ElseClauseSyntax elseClause,
CancellationToken cancellationToken)
{
if (elseClause.IsParentKind(SyntaxKind.IfStatement))
{
var ifStatement = (IfStatementSyntax)elseClause.Parent;
StatementSyntax statement = ifStatement.Statement;
if (statement?.GetTrailingTrivia().IsEmptyOrWhitespace() == true)
{
IfStatementSyntax newIfStatement = ifStatement
.WithStatement(statement.WithTrailingTrivia(elseClause.GetTrailingTrivia()))
.WithElse(null);
return(await document.ReplaceNodeAsync(ifStatement, newIfStatement, cancellationToken).ConfigureAwait(false));
}
}
return(await document.RemoveNodeAsync(elseClause, SyntaxRemoveOptions.KeepExteriorTrivia, cancellationToken).ConfigureAwait(false));
}
private static SyntaxNode GetNewRoot(SyntaxNode oldRoot, ElseClauseSyntax elseClause)
{
if (elseClause.Parent?.IsKind(SyntaxKind.IfStatement) == true)
{
var ifStatement = (IfStatementSyntax)elseClause.Parent;
if (ifStatement.Statement?.GetTrailingTrivia().IsWhitespaceOrEndOfLine() == true)
{
IfStatementSyntax newIfStatement = ifStatement
.WithStatement(ifStatement.Statement.WithTrailingTrivia(elseClause.GetTrailingTrivia()))
.WithElse(null);
return(oldRoot.ReplaceNode(ifStatement, newIfStatement));
}
}
return(oldRoot.RemoveNode(elseClause, SyntaxRemoveOptions.KeepExteriorTrivia));
}
private Decisions TraverseElseClauses(ElseClauseSyntax ecs, ref int exitPoints, bool nested = false)
{
Decisions retDecision = new Decisions();
ElseStatement elseStm = new ElseStatement();
if (ecs.HasLeadingTrivia)
{
SetOuterComments(elseStm, ecs.GetLeadingTrivia().ToFullString());
}
if (ecs.HasTrailingTrivia)
{
SetInnerComments(elseStm, ecs.GetTrailingTrivia().ToFullString());
}
elseStm.IsNested = nested;
var binaryExpressions = from aBinaryExpression in ecs.ChildNodes().OfType<BinaryExpressionSyntax>() select aBinaryExpression;
foreach (BinaryExpressionSyntax bes in binaryExpressions)
{
Method tempMethod = TraverseBinaryExpression(bes);
elseStm.AccessedVars.AddRange(tempMethod.AccessedVariables);
elseStm.InvokedMethods.AddRange(tempMethod.InvokedMethods);
}
var catches = from aCatch in ecs.ChildNodes().OfType<CatchClauseSyntax>() select aCatch;
foreach (CatchClauseSyntax ccs in catches)
{
Decisions tempCatch = TraverseCatchClauses(ccs, ref exitPoints, true);
elseStm.Nested.AddRange(tempCatch.Catches);
}
var elses = from aElse in ecs.ChildNodes().OfType<ElseClauseSyntax>() select aElse;
foreach (ElseClauseSyntax ecs2 in elses)
{
Decisions tempElse = TraverseElseClauses(ecs2, ref exitPoints, true);
elseStm.Nested.AddRange(tempElse.ElseStatements);
}
#region nested stuff
var statements = from aStatement in ecs.ChildNodes().OfType<StatementSyntax>() select aStatement;
foreach (StatementSyntax ss in statements)
{
if (ss is DoStatementSyntax)
{
Decisions dwl = TraverseDoStatements(ss as DoStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(dwl.DoWhileLoops);
}
else if (ss is ExpressionStatementSyntax)
{
Method tempMethod = TraverseExpressionStatementSyntax(ss as ExpressionStatementSyntax);
elseStm.AccessedVars.AddRange(tempMethod.AccessedVariables);
elseStm.InvokedMethods.AddRange(tempMethod.InvokedMethods);
}
else if (ss is ForEachStatementSyntax)
{
Decisions fes = TraverseForEachStatements(ss as ForEachStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(fes.ForEachStatements);
}
else if (ss is ForStatementSyntax)
{
Decisions fs = TraverseForStatements(ss as ForStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(fs.ForStatements);
}
else if (ss is IfStatementSyntax)
{
Decisions decision = TraverseIfStatements(ss as IfStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(decision.IfStatements);
}
else if (ss is LocalDeclarationStatementSyntax)
{
Model.Type tempType = new Model.Type();
LocalDeclarationStatementSyntax ldss = ss as LocalDeclarationStatementSyntax;
if (ldss.Declaration != null)
{
VariableDeclarationSyntax vds = ldss.Declaration;
tempType.Name = vds.Type.ToString();
tempType.IsKnownType = true;
tempType.IsNotUserDefined = true;
}
Method tempMethod = TransverseAccessVars(ss as LocalDeclarationStatementSyntax);
//NOT SURE if this will work but here goes
tempMethod.AccessedVariables[0].Type = tempType;
elseStm.AccessedVars.AddRange(tempMethod.AccessedVariables);
elseStm.InvokedMethods.AddRange(tempMethod.InvokedMethods);
}
else if (ss is ReturnStatementSyntax)
{
exitPoints++;
}
else if (ss is SwitchStatementSyntax)
{
Decisions switchStm = TraverseSwitchStatements(ss as SwitchStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(switchStm.SwitchStatements);
}
else if (ss is WhileStatementSyntax)
{
Decisions wl = TraverseWhileLoops(ss as WhileStatementSyntax, ref exitPoints, true);
elseStm.Nested.AddRange(wl.WhileLoops);
}
}
#endregion
retDecision.ElseStatements.Add(elseStm);
return retDecision;
}