static bool VerifyArgument(object argument, LambdaExpression verifier)
{
var value = verifier.Execute(argument);
if (value is bool result)
{
return(result);
}
throw new InvalidOperationException("expected bool value");
}
private Expression Evaluate(Expression e)
{
if (e.NodeType == ExpressionType.Constant)
{
return(e);
}
LambdaExpression lambda = Expression.Lambda(e);
object? value = lambda.Execute();
return(Expression.Constant(value, e.Type));
}
private Expression Evaluate(Expression e)
{
if (e.NodeType == ExpressionType.Constant)
{
return(e);
}
// Note[mge]: Uses the expression evaluation instead of Expression.Compile().
LambdaExpression lambda = Expression.Lambda(e);
object value = lambda.Execute();
return(Expression.Constant(value, e.Type));
}