protected void Reduce(int rule_nr)
{
Rule rule = rules[rule_nr];
//
// Default action "$$ = $1" for unit productions.
//
if (rule.rhs.Length == 1)
{
yyval = value_stack.Top(); // default action: $$ = $1;
}
else
{
yyval = new YYSTYPE();
}
//
// Default action "@$ = @1.Merge(@N)" for location info.
//
if (rule.rhs.Length == 1)
{
yyloc = location_stack.Top();
}
else if (rule.rhs.Length == 0)
{
// The location span for an empty production will start with the
// beginning of the next lexeme, and end with the finish of the
// previous lexeme. This gives the correct behaviour when this
// nonsense value is used in later Merge operations.
yyloc = (scanner.yylloc != null ? scanner.yylloc.Merge(lastL) : default(YYLTYPE));
}
else
{
YYLTYPE at1 = location_stack.array[location_stack.top - rule.rhs.Length];
YYLTYPE atN = location_stack.array[location_stack.top - 1];
if (at1 != null && atN != null)
{
yyloc = at1.Merge(atN);
}
}
DoAction(rule_nr);
for (int i = 0; i < rule.rhs.Length; i++)
{
state_stack.Pop();
value_stack.Pop();
location_stack.Pop();
}
current_state = state_stack.Top();
int vlhs;
if (current_state.Goto.TryGetValue(rule.lhs, out vlhs))
{
current_state = states[vlhs];
}
state_stack.Push(current_state);
value_stack.Push(yyval);
location_stack.Push(yyloc);
}
protected void Reduce(int rule_nr)
{
if (Trace)
{
DisplayRule(rule_nr);
}
Rule rule = rules[rule_nr];
//
// Default action "$$ = $1" for unit productions.
//
if (rule.rhs.Length == 1)
{
yyval = value_stack.Top(); // default action: $$ = $1;
}
else
{
yyval = new YYSTYPE();
}
//
// Default action "@$ = @1.Merge(@N)" for location info.
//
if (rule.rhs.Length == 1)
{
yyloc = location_stack.Top();
}
else if (rule.rhs.Length == 0)
{
yyloc = default(YYLTYPE);
}
else
{
YYLTYPE at1 = location_stack.array[location_stack.top - rule.rhs.Length];
YYLTYPE atN = location_stack.array[location_stack.top - 1];
if (at1 != null && atN != null)
{
yyloc = at1.Merge(atN);
}
}
DoAction(rule_nr);
for (int i = 0; i < rule.rhs.Length; i++)
{
state_stack.Pop();
value_stack.Pop();
location_stack.Pop();
}
if (Trace)
{
DisplayStack();
}
current_state = state_stack.Top();
if (current_state.Goto.ContainsKey(rule.lhs))
{
current_state = states[current_state.Goto[rule.lhs]];
}
state_stack.Push(current_state);
value_stack.Push(yyval);
location_stack.Push(yyloc);
}