public static BoundUnaryExpression Not(SyntaxNode syntax, BoundExpression condition)
{
Debug.Assert(condition.Type == TypeSymbol.Bool);
var op = BoundUnaryOperator.Bind(SyntaxKind.BangToken, TypeSymbol.Bool);
Debug.Assert(op != null);
return(new BoundUnaryExpression(syntax, op, condition));
}
public static BoundConstant?Fold(BoundUnaryOperator op, BoundExpression operand)
{
if (operand.ConstantValue?.Value != null)
{
return(op.Kind switch
{
BoundUnaryOperatorKind.Identity => new BoundConstant(operand.ConstantValue.Value switch
{
char i => i,
sbyte i => i,
short i => i,
int i => i,
long i => i,
byte i => i,
ushort i => i,
uint i => i,
ulong i => i,
float i => i,
double i => i,
decimal i => i,
_ => throw new Exception("Unexpected type")
}),