Scala编译器构建JComboBox类型参数时出错

Question

我正在尝试编译scala编译器，我已经克服了许多问题，但我目前被困在quick.lib

这是非常令人困惑的，因为源代码直接来自scala团队自己，所以我知道它应该编译。还采用了一个旧版本，我知道在其他地方编译和测试，但得到相同的错误。

在这个问题上的任何帮助或指出正确的方向将不胜感激。

quick.lib:
[scalacfork] Compiling 103 files to C:programmingscalabuildquickclasseslibrary
[scalacfork] C:programmingscalasrcswingscalaswingComboBox.scala:162: error: class JComboBox takes type parameters
[scalacfork]   override lazy val peer: JComboBox = new JComboBox(ComboBox.newConstantModel(items)) with SuperMixin
[scalacfork]                           ^
[scalacfork] C:programmingscalasrcswingscalaswingComboBox.scala:123: error: trait ComboBoxModel takes type parameters
[scalacfork]   def newConstantModel[A](items: Seq[A]): ComboBoxModel = {
[scalacfork]                                           ^
[scalacfork] C:programmingscalasrcswingscalaswingComboBox.scala:124: error: trait ComboBoxModel takes type parameters
[scalacfork]     new AbstractListModel with ComboBoxModel {
[scalacfork]                                ^
[scalacfork] C:programmingscalasrcswingscalaswingComboBox.scala:134: error: type mismatch;
[scalacfork]  found   : AnyRef
[scalacfork]  required: Nothing
[scalacfork]       def getElementAt(n: Int) = items(n).asInstanceOf[AnyRef]
[scalacfork]                                                       ^
[scalacfork] C:programmingscalasrcswingscalaswingComboBox.scala:162: error: too many arguments for constructor Object: ()Object
[scalacfork]   override lazy val peer: JComboBox = new JComboBox(ComboBox.newConstantModel(items)) with SuperMixin
[scalacfork]                                           ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:32: error: trait ListCellRenderer takes type parameters
[scalacfork]     def wrap[A](r: ListCellRenderer): Renderer[A] = new Wrapped[A](r)
[scalacfork]                    ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:27: error: class JList takes type parameters
[scalacfork]   def wrap[A](c: JList) = new ListView[A] {
[scalacfork]                  ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:145: error: class JList takes type parameters
[scalacfork]   override lazy val peer: JList = new JList with SuperMixin
[scalacfork]                           ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:37: error: trait ListCellRenderer takes type parameters
[scalacfork]    class Wrapped[A](override val peer: ListCellRenderer) extends Renderer[A] {
[scalacfork]                                             ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:72: error: trait ListCellRenderer takes type parameters
[scalacfork]     def peer: ListCellRenderer = new ListCellRenderer {
[scalacfork]               ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:72: error: trait ListCellRenderer takes type parameters
[scalacfork]     def peer: ListCellRenderer = new ListCellRenderer {
[scalacfork]                                      ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:73: error: class JList takes type parameters
[scalacfork]       def getListCellRendererComponent(list: JList, a: Any, index: Int, isSelected: Boolean, focused: Boolean) = 
[scalacfork]                                              ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:126: error: trait ListCellRenderer takes type parameters
[scalacfork]     override lazy val peer: ListCellRenderer = new DefaultListCellRenderer
[scalacfork]                             ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:153: error: type mismatch;
[scalacfork]  found   : AnyRef
[scalacfork]  required: Nothing
[scalacfork]     def getElementAt(n: Int) = items(n).asInstanceOf[AnyRef]
[scalacfork]                                                     ^
[scalacfork] C:programmingscalasrcswingscalaswingListView.scala:195: error: too many arguments for constructor Object: ()Object
[scalacfork]     object indices extends Indices(peer.getSelectedIndices) {
[scalacfork]                    ^
[scalacfork] 15 errors found

Answer 1

您正在使用JDK7吗?其中一个"问题"是JDK7在一些Swing api中添加了泛型，这与scala的工作方式不兼容。使用JDK6会有帮助。

关于这一点的更多信息可以在:https://groups.google.com/d/topic/scala-user/01CszZu8ga4/discussion