private void Reduce(int ruleNumber)
{
#if TRACE_ACTIONS
DisplayRule(ruleNumber);
#endif
Rule rule = rules[ruleNumber];
//
// Default actions for unit productions.
//
if (rule.RightHandSide.Length == 1)
{
CurrentSemanticValue = valueStack.TopElement(); // Default action: $$ = $1;
CurrentLocationSpan = LocationStack.TopElement(); // Default action "@$ = @1;
}
else
{
if (rule.RightHandSide.Length == 0)
{
// Create a new blank value.
// Explicit semantic action may mutate this value
CurrentSemanticValue = default(TValue);
// The location span for an empty production will start with the
// beginning of the next lexeme, and end with the finish of the
// previous lexeme. This gives the correct behaviour when this
// nonsense value is used in later Merge operations.
CurrentLocationSpan = (scanner.yylloc != null && LastSpan != null ?
scanner.yylloc.Merge(LastSpan) :
default(TSpan));
}
else
{
// Default action: $$ = $1;
CurrentSemanticValue = valueStack.TopElement();
// Default action "@$ = @1.Merge(@N)" for location info.
TSpan at1 = LocationStack[LocationStack.Depth - rule.RightHandSide.Length];
TSpan atN = LocationStack[LocationStack.Depth - 1];
CurrentLocationSpan =
((at1 != null && atN != null) ? at1.Merge(atN) : default(TSpan));
}
}
DoAction(ruleNumber);
for (int i = 0; i < rule.RightHandSide.Length; i++)
{
StateStack.Pop();
valueStack.Pop();
LocationStack.Pop();
}
FsaState = StateStack.TopElement();
if (FsaState.Goto.ContainsKey(rule.LeftHandSide))
{
FsaState = states[FsaState.Goto[rule.LeftHandSide]];
}
StateStack.Push(FsaState);
valueStack.Push(CurrentSemanticValue);
LocationStack.Push(CurrentLocationSpan);
}
private void Reduce(int ruleNumber)
{
#if TRACE_ACTIONS
DisplayRule(ruleNumber);
#endif
Rule rule = rules[ruleNumber];
if (rule.RightHandSide.Length == 1)
{
CurrentSemanticValue = valueStack.TopElement();
CurrentLocationSpan = LocationStack.TopElement();
}
else
{
if (rule.RightHandSide.Length == 0)
{
CurrentSemanticValue = default(TValue);
CurrentLocationSpan = (scanner.yylloc != null && LastSpan != null ?
scanner.yylloc.Merge(LastSpan) :
default(TSpan));
}
else
{
CurrentSemanticValue = valueStack.TopElement();
TSpan at1 = LocationStack[LocationStack.Depth - rule.RightHandSide.Length];
TSpan atN = LocationStack[LocationStack.Depth - 1];
CurrentLocationSpan =
((at1 != null && atN != null) ? at1.Merge(atN) : default(TSpan));
}
}
DoAction(ruleNumber);
for (int i = 0; i < rule.RightHandSide.Length; i++)
{
StateStack.Pop();
valueStack.Pop();
LocationStack.Pop();
}
#if TRACE_ACTIONS
DisplayStack();
#endif
FsaState = StateStack.TopElement();
if (FsaState.Goto.ContainsKey(rule.LeftHandSide))
{
FsaState = states[FsaState.Goto[rule.LeftHandSide]];
}
StateStack.Push(FsaState);
valueStack.Push(CurrentSemanticValue);
LocationStack.Push(CurrentLocationSpan);
}