public override void OnDecimalLiteralExpression(DecimalLiteralExpression node)
{
// Invoke Decimal(int lo, int mid, int hi, bool isNegative, byte scale)
int[] bits = Decimal.GetBits(node.Value);
_il.Emit(OpCodes.Ldc_I4, bits[0]);
_il.Emit(OpCodes.Ldc_I4, bits[1]);
_il.Emit(OpCodes.Ldc_I4, bits[2]);
_il.Emit(bits[3] < 0 ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0); // bool isNegative
int scale = (bits[3]&0x7FFFFFFF)>>16;
if (scale<0)
throw new Exception("unexpected scale less than 0");
if (scale>28)
throw new Exception("unexpected scale greater than 28");
_il.Emit(OpCodes.Ldc_I4_S, scale);
_il.Emit(OpCodes.Newobj, Decimal_Constructor);
PushType(TypeSystemServices.DecimalType);
}
public override void OnDecimalLiteralExpression(DecimalLiteralExpression node)
{
BindExpressionType(node, TypeSystemServices.DecimalType);
}
//throws RecognitionException, TokenStreamException
protected LiteralExpression double_literal()
{
LiteralExpression rle;
IToken neg = null;
IToken value = null;
IToken single = null;
IToken dec = null;
rle = null;
string val;
try { // for error handling
switch ( LA(1) )
{
case SUBTRACT:
case DOUBLE:
{
{
switch ( LA(1) )
{
case SUBTRACT:
{
neg = LT(1);
match(SUBTRACT);
break;
}
case DOUBLE:
{
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
value = LT(1);
match(DOUBLE);
if (0==inputState.guessing)
{
val = value.getText();
if (neg != null) val = neg.getText() + val;
rle = new DoubleLiteralExpression(ToLexicalInfo(value), PrimitiveParser.ParseDouble(value, val));
}
break;
}
case FLOAT:
{
single = LT(1);
match(FLOAT);
if (0==inputState.guessing)
{
val = single.getText();
val = val.Substring(0, val.Length-1);
if (neg != null) val = neg.getText() + val;
rle = new DoubleLiteralExpression(ToLexicalInfo(single), PrimitiveParser.ParseDouble(single, val, true), true);
}
break;
}
case DECIMAL:
{
dec = LT(1);
match(DECIMAL);
if (0==inputState.guessing)
{
val = dec.getText();
val = val.Substring(0, val.Length-3); // "dec"
if (neg != null) val = neg.getText() + val;
rle = new DecimalLiteralExpression(ToLexicalInfo(dec), decimal.Parse(val, NumberStyles.Currency, CultureInfo.InvariantCulture));
}
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
catch (RecognitionException ex)
{
if (0 == inputState.guessing)
{
reportError(ex, "double_literal");
recover(ex,tokenSet_41_);
}
else
{
throw ex;
}
}
return rle;
}