public static List <LocalVariable> ComputeUnusedArguments(
List <LocalVariable> argList,
UseDefDescription useDef)
{
var allUsages = useDef.GetAllUsedVariables();
var stillUnused = new List <LocalVariable>();
var unusedArguments = new HashSet <LocalVariable>(argList);
foreach (var unusedArgument in unusedArguments)
{
if (!allUsages.Contains(unusedArgument))
{
stillUnused.Add(unusedArgument);
}
}
return(stillUnused.ToList());
}
public static HashSet <LocalVariable> GetAllUsedVariables(this UseDefDescription useDef,
bool includeDefinitions = false)
{
var result = new HashSet <LocalVariable>();
var operations = useDef.GetLocalOperations();
for (var index = 0; index < operations.Length; index++)
{
var usages = useDef.GetUsages(index);
foreach (var usage in usages)
{
result.Add(usage);
}
if (includeDefinitions)
{
var definition = useDef.GetDefinition(index);
if (definition != null)
{
result.Add(definition);
}
}
}
return(result);
}