public override void VisitInvocationExpression(InvocationExpression invocationExpression)
{
base.VisitInvocationExpression(invocationExpression);
// Speed up the inspector by discarding some invocations early
var hasEligibleArgument = invocationExpression.Arguments.Any(argument => {
var primitiveArg = argument as PrimitiveExpression;
return(primitiveArg != null && primitiveArg.Value is string);
});
if (!hasEligibleArgument)
{
return;
}
var invocationResolveResult = context.Resolve(invocationExpression) as AlInvocationResolveResult;
if (invocationResolveResult == null)
{
return;
}
Expression formatArgument;
IList <Expression> formatArguments;
if (!FormatStringHelper.TryGetFormattingParameters(invocationResolveResult, invocationExpression,
out formatArgument, out formatArguments, null))
{
return;
}
var primitiveArgument = formatArgument as PrimitiveExpression;
if (primitiveArgument == null || !(primitiveArgument.Value is string))
{
return;
}
var format = (string)primitiveArgument.Value;
var parsingResult = context.ParseFormatString(format);
CheckSegments(parsingResult.Segments, formatArgument.StartLocation, formatArguments, invocationExpression);
var argUsed = new HashSet <int> ();
foreach (var item in parsingResult.Segments)
{
var fi = item as FormatItem;
if (fi == null)
{
continue;
}
argUsed.Add(fi.Index);
}
for (int i = 0; i < formatArguments.Count; i++)
{
if (!argUsed.Contains(i))
{
AddIssue(new CodeIssue(formatArguments[i], ctx.TranslateString("Argument is not used in format string"))
{
IssueMarker = IssueMarker.GrayOut
});
}
}
}