// a symbol-table client that finds the number of occurrences of each string
// (having at least as many characters as a given threshold length)
// in a sequence of strings from standard input,
// then iterates through the keys to find the one that occurs the most frequently
static void FrequencyCounter(ISymbolTable <string, int> st, IEnumerable <string> strings)
{
foreach (string s in strings)
{
if (st.Contains(s))
{
st.Put(s, 1 + st.Get(s));
}
else
{
st.Put(s, 1);
}
}
}
public override void HandleViolation(ISymbolTable context, IProblemPipe problemPipe)
{
if (!IsViolated (context))
return;
bool symbolIsUndefined = context.Contains (_symbol) && context.GetFragmentType (_symbol).Undefined;
if (symbolIsUndefined)
{
SetSymbolFragmentType(context);
}
else
{
HandleFragmentConflict (context, problemPipe);
}
}
private void SetSymbolFragmentType(string name, AttributeNodeCollection attributes)
{
if (!_result.Contains(name))
{
if (FragmentUtility.ContainsFragment(attributes))
{
Fragment fragmentType = FragmentUtility.GetFragmentType(attributes);
_result.MakeSafe(name, fragmentType);
}
else
{
_result.MakeUnsafe(name);
}
}
}
public override void HandleViolation(ISymbolTable context, IProblemPipe problemPipe)
{
if (!IsViolated(context))
{
return;
}
bool symbolIsUndefined = context.Contains(_symbol) && context.GetFragmentType(_symbol).Undefined;
if (symbolIsUndefined)
{
SetSymbolFragmentType(context);
}
else
{
HandleFragmentConflict(context, problemPipe);
}
}
private bool ExpressionIsVariableFromPrecedingBlock(Expression operand, out string variableName)
{
return(IntrospectionUtility.IsVariable(operand, out variableName) &&
!_symbolTable.Contains(variableName));
}
private bool OperandIsVariableFromPrecedingBlock(Expression operand, ISymbolTable symbolTable, out string variableName)
{
return IntrospectionUtility.IsVariable (operand, out variableName)
&& !symbolTable.Contains (variableName);
}