private static void Reduce(Stack<int> shiftReduceStack, ShiftReduce shiftReduce, Stack<IJsonValue> inputStack, Stack<ParseItem> parseStack)
{
var numPops = ReduceLengths[shiftReduce.Action] << 1;
for (var i = 0; i < numPops; ++i)
shiftReduceStack.Pop();
var topOfStack = shiftReduceStack.Peek();
var leftHandSide = ReduceLeftHandSides[shiftReduce.Action];
shiftReduceStack.Push(shiftReduce.Action);
shiftReduceStack.Push(ActionGotoTable[topOfStack, leftHandSide].Action);
//if (Log.IsDebugEnabled)
// Log.Debug("Reduce r{0} by production: {1}", shiftReduce.Action, Productions[shiftReduce.Action]);
// build the parse tree for the action at this reduction step
ReduceAction(shiftReduce, parseStack, inputStack);
}
private static void ReduceAction(ShiftReduce shiftReduce, Stack<ParseItem> parseStack, Stack<IJsonValue> inputStack)
{
switch ((ProductionType)shiftReduce.Action)
{
case ProductionType.EmptyArray:
ReduceEmptyArray(parseStack);
break;
case ProductionType.EmptyObject:
ReduceEmptyObject(parseStack);
break;
case ProductionType.NonEmptyArray:
ReduceNonEmptyArray(parseStack);
break;
case ProductionType.NonEmptyObject:
ReduceNonEmptyObject(parseStack);
break;
case ProductionType.MemberMultiple:
ReduceMemberMultiple(parseStack);
break;
case ProductionType.Object:
ReduceObject(parseStack);
break;
case ProductionType.Array:
ReduceArray(parseStack);
break;
case ProductionType.MemberSingle:
ReduceMemberSingle(parseStack);
break;
case ProductionType.Pair:
ReducePair(inputStack, parseStack);
break;
case ProductionType.ElementMultiple:
ReduceElementMultiple(parseStack);
break;
case ProductionType.ElementSingle:
ReduceElementSingle(parseStack);
break;
case ProductionType.ObjectValue:
ReduceObjectValue(parseStack);
break;
case ProductionType.ArrayValue:
ReduceArrayValue(parseStack);
break;
case ProductionType.StringValue:
case ProductionType.NumberValue:
case ProductionType.TrueValue:
case ProductionType.FalseValue:
case ProductionType.NullValue:
ReduceValue(inputStack, parseStack);
break;
default:
break;
}
}
private static void Shift(Stack<int> shiftReduceStack, JsonLexicalAnalyzer lex, JsonLexicalType currentLexeme, ShiftReduce shiftReduce, Stack<IJsonValue> inputStack)
{
shiftReduceStack.Push((int)currentLexeme);
shiftReduceStack.Push(shiftReduce.Action);
//if (Log.IsDebugEnabled)
// Log.Debug("Shift {0} s{1}", currentLexeme, shiftReduce.Action);
switch (currentLexeme)
{
case JsonLexicalType.Number:
if (lex.CurrentDouble.HasValue)
inputStack.Push(new JsonNumber(lex.CurrentDouble.Value));
else if (lex.CurrentInt64.HasValue)
inputStack.Push(new JsonNumber(lex.CurrentInt64.Value));
break;
case JsonLexicalType.String:
inputStack.Push(new JsonString(lex.CurrentString));
break;
case JsonLexicalType.True:
inputStack.Push(new JsonBoolean(true));
break;
case JsonLexicalType.False:
inputStack.Push(new JsonBoolean(false));
break;
case JsonLexicalType.Null:
inputStack.Push(Singleton<JsonNull>.Instance);
break;
default:
break;
}
}
