private static bool CheckContainingNode(SyntaxNode node)
{
switch (node.Kind())
{
case SyntaxKind.ForEachStatement:
case SyntaxKind.ForStatement:
case SyntaxKind.UsingStatement:
case SyntaxKind.WhileStatement:
case SyntaxKind.DoStatement:
case SyntaxKind.LockStatement:
case SyntaxKind.FixedStatement:
case SyntaxKind.UnsafeStatement:
case SyntaxKind.TryStatement:
case SyntaxKind.CheckedStatement:
case SyntaxKind.UncheckedStatement:
return(true);
case SyntaxKind.IfStatement:
return(IfElseChain.IsTopmostIf((IfStatementSyntax)node));
case SyntaxKind.ElseClause:
return(IfElseChain.IsEndOfChain((ElseClauseSyntax)node));
}
return(false);
}
public static void Analyze(SyntaxNodeAnalysisContext context, ContinueStatementSyntax continueStatement)
{
SyntaxNode parent = continueStatement.Parent;
if (parent?.IsKind(SyntaxKind.Block) == true)
{
var block = (BlockSyntax)parent;
parent = parent.Parent;
if (parent != null)
{
SyntaxKind kind = parent.Kind();
if (CanContainContinueStatement(kind))
{
if (block.Statements.IsLast(continueStatement) &&
!continueStatement.SpanContainsDirectives())
{
context.ReportDiagnostic(DiagnosticDescriptors.RemoveRedundantContinueStatement, continueStatement);
}
}
else if (kind == SyntaxKind.ElseClause)
{
var elseClause = (ElseClauseSyntax)parent;
if (IfElseChain.IsEndOfChain(elseClause))
{
IfStatementSyntax ifStatement = IfElseChain.GetTopmostIf(elseClause);
parent = ifStatement.Parent;
if (parent?.IsKind(SyntaxKind.Block) == true)
{
block = (BlockSyntax)parent;
parent = parent.Parent;
if (CanContainContinueStatement(parent) &&
block.Statements.IsLast(ifStatement) &&
!elseClause.SpanContainsDirectives())
{
context.ReportDiagnostic(DiagnosticDescriptors.RemoveRedundantContinueStatement, continueStatement);
}
}
}
}
}
}
}