private BoundExpression Negate(BoundExpression condition)
{
if (condition is BoundLiteralExpression literal)
{
var value = (bool)literal.Value;
return(new BoundLiteralExpression(!value));
}
var op = BoundUnaryOperator.Bind(SyntaxKind.BangToken, TypeSymbol.Bool);
return(new BoundUnaryExpression(op, condition));
}
private BoundExpression BindUnaryExpression(UnaryExpressionSyntax syntax)
{
var boundOperand = BindExpression(syntax.Operand);
var boundOperator = BoundUnaryOperator.Bind(syntax.OperatorToken.Kind, boundOperand.Type);
if (boundOperator == null)
{
_diagnostics.ReportUndefinedUnaryOperator(syntax.OperatorToken.Span, syntax.OperatorToken.Text, boundOperand.Type);
return(boundOperand);
}
return(new BoundUnaryExpression(boundOperator, boundOperand));
}