//*
// * Returns a string representation of a production pattern.
// *
// * @param prod the production pattern
// *
// * @return a detailed string representation of the pattern
//
private string ToString(ProductionPattern prod)
{
StringBuilder buffer = new StringBuilder();
StringBuilder indent = new StringBuilder();
LookAheadSet @set = default(LookAheadSet);
int i = 0;
buffer.Append(prod.Name);
buffer.Append(" (");
buffer.Append(prod.Id);
buffer.Append(") ");
for (i = 0; i <= buffer.Length - 1; i++)
{
indent.Append(" ");
}
buffer.Append("= ");
indent.Append("| ");
for (i = 0; i <= prod.Count - 1; i++)
{
if (i > 0)
{
buffer.Append(indent);
}
buffer.Append(ToString(prod[i]));
buffer.Append("" + Convert.ToChar(10) + "");
}
for (i = 0; i <= prod.Count - 1; i++)
{
@set = prod[i].LookAhead;
if (@set.GetMaxLength() > 1)
{
buffer.Append("Using ");
buffer.Append(@set.GetMaxLength());
buffer.Append(" token look-ahead for alternative ");
buffer.Append(i + 1);
buffer.Append(": ");
buffer.Append(@set.ToString(m_tokenizer));
buffer.Append("" + Convert.ToChar(10) + "");
}
}
return(buffer.ToString());
}
//*
// * Returns the union of all alternative look-ahead sets in a
// * production pattern.
// *
// * @param pattern the production pattern
// *
// * @return a unified look-ahead set
//
private LookAheadSet FindUnion(ProductionPattern pattern)
{
LookAheadSet result = default(LookAheadSet);
int length = 0;
int i = 0;
for (i = 0; i <= pattern.Count - 1; i++)
{
result = pattern[i].LookAhead;
if (result.GetMaxLength() > length)
{
length = result.GetMaxLength();
}
}
result = new LookAheadSet(length);
for (i = 0; i <= pattern.Count - 1; i++)
{
result.AddAll(pattern[i].LookAhead);
}
return(result);
}