/***************************************************************
* Function: reset
* Description: Resets CMakeNfa member variables.
**************************************************************/
private void reset
(
)
{
m_input = null;
m_lexGen = null;
m_spec = null;
}
/***************************************************************
* Function: thompson
* Description: High level access function to module.
* Deposits result in input CSpec.
**************************************************************/
public void thompson
(
CLexGen lexGen,
CSpec spec,
CInput input
)
{
int i;
CNfa elem;
int size;
/* Set member variables. */
reset();
Set(lexGen, spec, input);
size = m_spec.m_states.Count;
m_spec.m_state_rules = new Vector[size];
for (i = 0; i < size; ++i)
{
m_spec.m_state_rules[i] = new Vector();
}
/* Initialize current token variable
* and create nfa. */
/*m_spec.m_current_token = m_lexGen.EOS;
* m_lexGen.advance();*/
m_spec.m_nfa_start = machine();
/* Set labels in created nfa machine. */
size = m_spec.m_nfa_states.size();
for (i = 0; i < size; ++i)
{
elem = (CNfa)m_spec.m_nfa_states.elementAt(i);
elem.m_label = i;
}
/* Debugging output. */
#if (DO_DEBUG)
{
m_lexGen.print_nfa();
}
#endif
if (m_spec.m_verbose)
{
System.Console.WriteLine("NFA comprised of "
+ (m_spec.m_nfa_states.Count + 1)
+ " states.");
}
reset();
}
/***************************************************************
* Function: Set
* Description: Sets CMakeNfa member variables.
**************************************************************/
private void Set
(
CLexGen lexGen,
CSpec spec,
CInput input
)
{
#if (DEBUG)
{
CUtility.ASSERT(null != input);
CUtility.ASSERT(null != lexGen);
CUtility.ASSERT(null != spec);
}
#endif
m_input = input;
m_lexGen = lexGen;
m_spec = spec;
}