internal static UnaryOperatorSymbol UserDefinedUnaryOperator(UnaryOperatorKind kind, ref Expr expr, BindOptions options)
{
var name = UnaryOperatorSymbol.OperatorName(kind);
if (name != null)
{
MethodSymbol mop = null;
ConversionSymbol conv = null;
ResolveUserDefinedUnaryOperator(expr, expr.Datatype.Lookup(name), ref mop, ref conv, options);
if (mop != null)
{
var op = UnaryOperatorSymbol.Create(kind, mop, conv);
ApplyUnaryOperator(ref expr, op);
return(op);
}
}
return(null);
}
static UnaryOperatorEasyOut()
{
const OperandType ERR = OperandType.Error;
const OperandType BOL = OperandType.Bool;
const OperandType CHR = OperandType.Char;
const OperandType I08 = OperandType.SByte;
const OperandType U08 = OperandType.Byte;
const OperandType I16 = OperandType.Short;
const OperandType U16 = OperandType.UShort;
const OperandType I32 = OperandType.Int;
const OperandType U32 = OperandType.UInt;
const OperandType I64 = OperandType.Long;
const OperandType U64 = OperandType.ULong;
const OperandType R32 = OperandType.Float;
const OperandType R64 = OperandType.Double;
const OperandType DEC = OperandType.Decimal;
OperandType[] increment =
//bool chr i08 i16 i32 i64 u08 u16 u32 u64 r32 r64 dec
{ ERR, CHR, I08, I16, I32, I64, U08, U16, U32, U64, R32, R64, DEC };
OperandType[] plus =
//bool chr i08 i16 i32 i64 u08 u16 u32 u64 r32 r64 dec
{ ERR, I32, I32, I32, I32, I64, I32, I32, U32, U64, R32, R64, DEC };
OperandType[] minus =
//bool chr i08 i16 i32 i64 u08 u16 u32 u64 r32 r64 dec
{ ERR, I32, I32, I32, I32, I64, I32, I32, I64, ERR, R32, R64, DEC };
OperandType[] logicalNegation =
//bool chr i08 i16 i32 i64 u08 u16 u32 u64 r32 r64 dec
{ BOL, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR };
OperandType[] bitwiseComplement =
//bool chr i08 i16 i32 i64 u08 u16 u32 u64 r32 r64 dec
{ ERR, I32, I32, I32, I32, I64, I32, I32, U32, U64, ERR, ERR, ERR };
var ops = (UnaryOperatorKind[])Enum.GetValues(typeof(UnaryOperatorKind));
s_unOp = new UnaryOperatorSymbol[ops.Length][];
s_unOp[(int)UnaryOperatorKind.Error] = new UnaryOperatorSymbol[28];
for (int i = 0; i < 28; i++)
{
s_unOp[(int)UnaryOperatorKind.Error][i] = UnaryOperatorSymbol.Create(UnaryOperatorKind.Error, OperandType.Error);
}
for (int i = ((int)UnaryOperatorKind.Error) + 1; i < ops.Length; i++)
{
s_unOp[i] = s_unOp[(int)UnaryOperatorKind.Error];
}
Func <UnaryOperatorKind, OperandType[], UnaryOperatorSymbol[]> expandTable = (k, x) =>
{
var res = new UnaryOperatorSymbol[28];
for (int i = 0; i < 13; i++)
{
var t = x[i];
var nt = OperandTypeHelper.IsNullable(t + OperandTypeHelper.NullableDelta) ? t + OperandTypeHelper.NullableDelta : t;
res[i + 2] = UnaryOperatorSymbol.Create(k, t);
res[i + 2 + 13] = UnaryOperatorSymbol.Create(k, nt);
}
return(res);
};
var tables = new[] { increment, plus, minus, logicalNegation, bitwiseComplement };
Func <UnaryOperatorKind, int> tableIndex = k =>
{
if (k == UnaryOperatorKind.Increment || k == UnaryOperatorKind.Decrement)
{
return(0);
}
if (k == UnaryOperatorKind.UnaryPlus)
{
return(1);
}
if (k == UnaryOperatorKind.UnaryMinus)
{
return(2);
}
if (k == UnaryOperatorKind.LogicalNegation)
{
return(3);
}
if (k == UnaryOperatorKind.BitwiseComplement)
{
return(4);
}
return(-1);
};
for (int i = ((int)UnaryOperatorKind.Error) + 1; i < ops.Length; i++)
{
var k = (UnaryOperatorKind)i;
var ti = tableIndex(k);
if (ti >= 0)
{
s_unOp[i] = expandTable(k, tables[ti]);
}
}
}