System.Xml.Xsl.IlGen.GenerateHelper.TestAndBranch C# (CSharp) Method

        public void TestAndBranch(int i4, Label lblBranch, OpCode opcodeBranch)
        {
            switch (i4)
            {
                case 0:
                    // Beq or Bne can be shortened to Brfalse or Brtrue if comparing to 0
                    if (opcodeBranch.Value == OpCodes.Beq.Value)
                        opcodeBranch = OpCodes.Brfalse;
                    else if (opcodeBranch.Value == OpCodes.Beq_S.Value)
                        opcodeBranch = OpCodes.Brfalse_S;
                    else if (opcodeBranch.Value == OpCodes.Bne_Un.Value)
                        opcodeBranch = OpCodes.Brtrue;
                    else if (opcodeBranch.Value == OpCodes.Bne_Un_S.Value)
                        opcodeBranch = OpCodes.Brtrue_S;
                    else
                        goto default;
                    break;

                default:
                    // Cannot use shortcut, so push integer onto the stack
                    LoadInteger(i4);
                    break;
            }

            Emit(opcodeBranch, lblBranch);
        }