public override void RewriteConditional(ref BasicBlock block)
{
var evaluated = Context.Options.IsFeatureEnabled(Feature);
Scanner.LogDebug(1, $"REWRITE FEATURE CONDITIONAL: {Feature} {evaluated}");
if (evaluated)
{
BlockList.DeleteBlock(ref block);
return;
}
Context.LogMessage(MessageImportance.High, Environment.NewLine);
Context.LogMessage(MessageImportance.High, $"Required feature `{Feature}` not available.");
#if FIXME
Context.Context.Tracer.Dump();
#endif
Context.LogMessage(MessageImportance.High, Environment.NewLine);
var pns = Context.Context.GetType("System.PlatformNotSupportedException");
var ctor = pns?.Methods.FirstOrDefault(m => m.Name == ".ctor");
if (ctor == null)
{
throw new OptimizerAssertionException($"Can't find `System.PlatformNotSupportedException`.");
}
Scanner.LogDebug(1, $"REWRITE FEATURE CONDITIONAL #1: {pns} {ctor}");
var reference = Method.DeclaringType.Module.ImportReference(ctor);
BlockList.ReplaceInstructionAt(ref block, 0, Instruction.Create(OpCodes.Newobj, reference));
BlockList.ReplaceInstructionAt(ref block, 1, Instruction.Create(OpCodes.Throw));
}