public override Constant ConvertExplicitly (bool in_checked_context, TypeSpec target_type)
{
switch (target_type.BuiltinType) {
case BuiltinTypeSpec.Type.Byte:
if (in_checked_context) {
if (Value < byte.MinValue || Value > byte.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new ByteConstant (target_type, (byte) DoubleValue, Location);
case BuiltinTypeSpec.Type.SByte:
if (in_checked_context) {
if (Value < sbyte.MinValue || Value > sbyte.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new SByteConstant (target_type, (sbyte) DoubleValue, Location);
case BuiltinTypeSpec.Type.Short:
if (in_checked_context) {
if (Value < short.MinValue || Value > short.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new ShortConstant (target_type, (short) DoubleValue, Location);
case BuiltinTypeSpec.Type.UShort:
if (in_checked_context) {
if (Value < ushort.MinValue || Value > ushort.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new UShortConstant (target_type, (ushort) DoubleValue, Location);
case BuiltinTypeSpec.Type.Int:
if (in_checked_context) {
if (Value < int.MinValue || Value > int.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new IntConstant (target_type, (int) DoubleValue, Location);
case BuiltinTypeSpec.Type.UInt:
if (in_checked_context) {
if (Value < uint.MinValue || Value > uint.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new UIntConstant (target_type, (uint) DoubleValue, Location);
case BuiltinTypeSpec.Type.Long:
if (in_checked_context) {
if (Value < long.MinValue || Value > long.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new LongConstant (target_type, (long) DoubleValue, Location);
case BuiltinTypeSpec.Type.ULong:
if (in_checked_context) {
if (Value < ulong.MinValue || Value > ulong.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new ULongConstant (target_type, (ulong) DoubleValue, Location);
case BuiltinTypeSpec.Type.Double:
return new DoubleConstant (target_type, DoubleValue, Location);
case BuiltinTypeSpec.Type.Char:
if (in_checked_context) {
if (Value < (float) char.MinValue || Value > (float) char.MaxValue || float.IsNaN (Value))
throw new OverflowException ();
}
return new CharConstant (target_type, (char) DoubleValue, Location);
case BuiltinTypeSpec.Type.Decimal:
return new DecimalConstant (target_type, (decimal) DoubleValue, Location);
}
return null;
}
