private static Instruction FindNextConstructionMethod(MethodDefinition method, Instruction instruction)
{
var cursor = instruction;
//the description object should be on the stack, and nothing on top of it.
int stackDepth = 1;
while (cursor.Next != null)
{
cursor = cursor.Next;
var result = CecilHelpers.MatchesDelegateProducingPattern(method, cursor, CecilHelpers.DelegateProducingPattern.MatchSide.Start);
if (result != null)
{
cursor = result.Instructions.Last();
stackDepth += 1;
continue;
}
if (CecilHelpers.IsUnsupportedBranch(cursor))
{
UserError.DC0010(method, cursor).Throw();
}
if (cursor.OpCode == OpCodes.Call && cursor.Operand is MethodReference mr && IsLambdaJobDescriptionConstructionMethod(mr))
{
return(cursor);
}
stackDepth -= cursor.GetPopDelta();
if (stackDepth < 1)
{
UserError.DC0011(method, cursor).Throw();
}
stackDepth += cursor.GetPushDelta();
}
return(null);
}