public void set()

in model/src/main/java/jetbrains/jetpad/model/children/ChildProperty.java [29:74]

40 lines of code
8 McCabe index (conditional complexity)


  public void set(ChildT value) {
    if (get() == value) return;

    if (value != null && value.parent().get() != null) {
      throw new IllegalStateException();
    }

    ChildT oldValue = get();
    if (oldValue != null) {
      oldValue.myParent.set(null);
      oldValue.myPositionData = null;
    }
    if (value != null) {
      value.myParent.set(myParent);
      value.myPositionData = new PositionData<ChildT>() {
        @Override
        public Position<ChildT> get() {
          return new Position<ChildT>() {
            @Override
            public ChildT get() {
              return ChildProperty.this.get();
            }

            @Override
            public Object getRole() {
              return ChildProperty.this;
            }
          };
        }

        @Override
        public void remove() {
          set(null);
        }
      };
    }

    super.set(value);

    if (oldValue != null) {
      oldValue.myParent.flush();
    }
    if (value != null) {
      value.myParent.flush();
    }
  }