Method evalIdentifier

src/main/java/net/starlark/java/eval/Eval.java:796–828

(StarlarkThread.Frame fr, Identifier id)

  }

  private static Object evalIdentifier(StarlarkThread.Frame fr, Identifier id)
      throws EvalException, InterruptedException {
    Resolver.Binding bind = id.getBinding();
    Object result;
    switch (bind.getScope()) {
      case LOCAL:
        result = fr.locals[bind.getIndex()];
        break;
      case CELL:
        result = ((StarlarkFunction.Cell) fr.locals[bind.getIndex()]).x;
        break;
      case FREE:
        result = fn(fr).getFreeVar(bind.getIndex()).x;
        break;
      case GLOBAL:
        result = fn(fr).getGlobal(bind.getIndex());
        break;
      case PREDECLARED:
        result = fn(fr).getModule().getPredeclared(id.getName());
        break;
      case UNIVERSAL:
        result = Starlark.UNIVERSE.get(id.getName());
        break;
      default:
        throw new IllegalStateException(bind.toString());
    }
    if (result == null) {
      fr.setErrorLocation(id.getStartLocation());
      throw Starlark.errorf(
          "%s variable '%s' is referenced before assignment.", bind.getScope(), id.getName());
    }
    return result;
  }

  private static Object evalIndex(StarlarkThread.Frame fr, IndexExpression index)
      throws EvalException, InterruptedException {