public void visitInsn()

in src/tools/android/java/com/google/devtools/build/android/desugar/BytecodeTypeInference.java [88:337]
245 lines of code
108 McCabe index (conditional complexity)

  public void visitInsn(int opcode) {
    switch (opcode) {
      case Opcodes.NOP:
      case Opcodes.INEG:
      case Opcodes.LNEG:
      case Opcodes.FNEG:
      case Opcodes.DNEG:
      case Opcodes.I2B:
      case Opcodes.I2C:
      case Opcodes.I2S:
      case Opcodes.RETURN:
        break;
      case Opcodes.ACONST_NULL:
        push(InferredType.NULL);
        break;
      case Opcodes.ICONST_M1:
      case Opcodes.ICONST_0:
      case Opcodes.ICONST_1:
      case Opcodes.ICONST_2:
      case Opcodes.ICONST_3:
      case Opcodes.ICONST_4:
      case Opcodes.ICONST_5:
        push(InferredType.INT);
        break;
      case Opcodes.LCONST_0:
      case Opcodes.LCONST_1:
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
      case Opcodes.FCONST_0:
      case Opcodes.FCONST_1:
      case Opcodes.FCONST_2:
        push(InferredType.FLOAT);
        break;
      case Opcodes.DCONST_0:
      case Opcodes.DCONST_1:
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
      case Opcodes.IALOAD:
      case Opcodes.BALOAD:
      case Opcodes.CALOAD:
      case Opcodes.SALOAD:
        pop(2);
        push(InferredType.INT);
        break;
      case Opcodes.LALOAD:
      case Opcodes.D2L:
        pop(2);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
      case Opcodes.DALOAD:
      case Opcodes.L2D:
        pop(2);
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
      case Opcodes.AALOAD:
        InferredType arrayType = pop(2);
        InferredType elementType = arrayType.getElementTypeIfArrayOrThrow();
        push(elementType);
        break;
      case Opcodes.IASTORE:
      case Opcodes.BASTORE:
      case Opcodes.CASTORE:
      case Opcodes.SASTORE:
      case Opcodes.FASTORE:
      case Opcodes.AASTORE:
        pop(3);
        break;
      case Opcodes.LASTORE:
      case Opcodes.DASTORE:
        pop(4);
        break;
      case Opcodes.POP:
      case Opcodes.IRETURN:
      case Opcodes.FRETURN:
      case Opcodes.ARETURN:
      case Opcodes.ATHROW:
      case Opcodes.MONITORENTER:
      case Opcodes.MONITOREXIT:
        pop();
        break;
      case Opcodes.POP2:
      case Opcodes.LRETURN:
      case Opcodes.DRETURN:
        pop(2);
        break;
      case Opcodes.DUP:
        push(top());
        break;
      case Opcodes.DUP_X1:
        {
          InferredType top = pop();
          InferredType next = pop();
          push(top);
          push(next);
          push(top);
          break;
        }
      case Opcodes.DUP_X2:
        {
          InferredType top = pop();
          InferredType next = pop();
          InferredType bottom = pop();
          push(top);
          push(bottom);
          push(next);
          push(top);
          break;
        }
      case Opcodes.DUP2:
        {
          InferredType top = pop();
          InferredType next = pop();
          push(next);
          push(top);
          push(next);
          push(top);
          break;
        }
      case Opcodes.DUP2_X1:
        {
          InferredType top = pop();
          InferredType next = pop();
          InferredType bottom = pop();
          push(next);
          push(top);
          push(bottom);
          push(next);
          push(top);
          break;
        }
      case Opcodes.DUP2_X2:
        {
          InferredType t1 = pop();
          InferredType t2 = pop();
          InferredType t3 = pop();
          InferredType t4 = pop();
          push(t2);
          push(t1);
          push(t4);
          push(t3);
          push(t2);
          push(t1);
          break;
        }
      case Opcodes.SWAP:
        {
          InferredType top = pop();
          InferredType next = pop();
          push(top);
          push(next);
          break;
        }
      case Opcodes.IADD:
      case Opcodes.ISUB:
      case Opcodes.IMUL:
      case Opcodes.IDIV:
      case Opcodes.IREM:
      case Opcodes.ISHL:
      case Opcodes.ISHR:
      case Opcodes.IUSHR:
      case Opcodes.IAND:
      case Opcodes.IOR:
      case Opcodes.IXOR:
      case Opcodes.L2I:
      case Opcodes.D2I:
      case Opcodes.FCMPL:
      case Opcodes.FCMPG:
        pop(2);
        push(InferredType.INT);
        break;

      case Opcodes.LADD:
      case Opcodes.LSUB:
      case Opcodes.LMUL:
      case Opcodes.LDIV:
      case Opcodes.LREM:
      case Opcodes.LAND:
      case Opcodes.LOR:
      case Opcodes.LXOR:
        pop(4);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;

      case Opcodes.LSHL:
      case Opcodes.LSHR:
      case Opcodes.LUSHR:
        pop(3);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
      case Opcodes.I2L:
      case Opcodes.F2L:
        pop();
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
      case Opcodes.I2F:
        pop();
        push(InferredType.FLOAT);
        break;

      case Opcodes.LCMP:
      case Opcodes.DCMPG:
      case Opcodes.DCMPL:
        pop(4);
        push(InferredType.INT);
        break;

      case Opcodes.I2D:
      case Opcodes.F2D:
        pop();
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
      case Opcodes.F2I:
      case Opcodes.ARRAYLENGTH:
        pop();
        push(InferredType.INT);
        break;
      case Opcodes.FALOAD:
      case Opcodes.FADD:
      case Opcodes.FSUB:
      case Opcodes.FMUL:
      case Opcodes.FDIV:
      case Opcodes.FREM:
      case Opcodes.L2F:
      case Opcodes.D2F:
        pop(2);
        push(InferredType.FLOAT);
        break;

      case Opcodes.DADD:
      case Opcodes.DSUB:
      case Opcodes.DMUL:
      case Opcodes.DDIV:
      case Opcodes.DREM:
        pop(4);
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
      default:
        throw new RuntimeException("Unhandled opcode " + opcode);
    }
    super.visitInsn(opcode);
  }