public static List <TextSpan> GetReturnStatementSpans(MethodDeclarationSyntax method)
{
var rsf = new ReturnStatementFinder();
rsf.Visit(method);
return(rsf.spans);
}
bool IOutputResults.EmitOutcome(Witness witness, string format, params object[] args)
{
if (this.ShowOnlyAnswersToAskClousot)
{
return(false);
}
string tag;
switch (witness.Outcome)
{
case ProofOutcome.Top: tag = "warning"; break;
case ProofOutcome.False: tag = "error"; break;
default: tag = ""; break;
}
ICodeAction action = null; // No action for a warning/error. Suggestions have actions.
var msg = String.Format("{0}: {1}", tag, String.Format(format, args));
var startIndex = 0;
var length = 0;
var pc = witness.PC.PrimaryMethodLocation();
if (pc.HasRealSourceContext)
{
startIndex = pc.Block.SourceStartIndex(pc);
length = pc.Block.SourceLength(pc);
var startLine = pc.Block.SourceStartLine(pc);
var startColumn = pc.Block.SourceStartColumn(pc);
this.results.Add(new ClousotOutput(witness.Outcome, msg, new TextSpan(startIndex, length), new Tuple <int, int>(startLine, startColumn),
action, ClousotOutput.ExtraInfo.None));
return(true);
}
if (pc.InsideEnsuresInMethod) // postcondition failures don't have good locations
{
MethodReferenceAdaptor meth;
var ok = pc.TryGetContainingMethod(out meth);
if (ok && IteratorHelper.EnumerableIsNotEmpty(meth.reference.Locations))
{
var l = IteratorHelper.First(meth.reference.Locations) as ISourceLocation;
if (l != null)
{
startIndex = l.StartIndex;
length = l.Length;
var s = new TextSpan(startIndex, length);
BaseMethodDeclarationSyntax m;
if (this.span2Method.TryGetValue(s, out m))
{
List <TextSpan> returnSpans = null;
if (m is MethodDeclarationSyntax) // otherwise it is a constructor
{
returnSpans = ReturnStatementFinder.GetReturnStatementSpans(m as MethodDeclarationSyntax);
}
if (returnSpans == null || returnSpans.Count == 0)
{
if (m.Body == null)
{
this.results.Add(new ClousotOutput(witness.Outcome, msg, m.GetLastToken().Span, null, action, ClousotOutput.ExtraInfo.None));
return(true);
}
else
{
// just use method's closing curly
this.results.Add(new ClousotOutput(witness.Outcome, msg, m.Body.CloseBraceToken.Span, null, action, ClousotOutput.ExtraInfo.None));
return(true);
}
}
else
{
foreach (var returnSpan in returnSpans)
{
this.results.Add(new ClousotOutput(witness.Outcome, msg, returnSpan, null, action, ClousotOutput.ExtraInfo.None));
}
return(true);
}
}
}
}
}
return(false);
}
