Scala编译器生成错误JComboBox类型参数 [英] Scala compiler build error JComboBox type parameters

问题描述

因此，我正在尝试编译scala编译器，克服了许多问题，试图将其完成，但是我目前仍停留在quick.lib

这非常令人困惑，因为源直接来自scala团队本身，所以我知道它应该编译.我还使用了一个我知道可以在其他地方编译的旧版本，并对其进行了测试，但是得到了相同的错误.

在此问题上的任何帮助或朝着正确方向的观点将不胜感激.

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

解决方案

您是否正在使用JDK7? 问题"之一是JDK7向某些Swing API添加了泛型，这与scala的工作方式不兼容.使用JDK6会有所帮助.

有关此内容的更多信息，请访问: https://groups.google.com/d/topic/scala-user/01CszZu8ga4/discussion

So I'm trying to compile the scala compiler, I've overcome many problems trying to get this done but I am currently stuck at quick.lib

This is very confusing as the source is taken directly from the scala team themselves so I know it should compile. Also taken an old version I know compiles elsewhere and tested that but get the same error.

Any help on the issue or a point in the right direction would be greatly appreciated.

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

解决方案

Are you using JDK7? One on the 'issues' is that JDK7 added generics to some of the Swing APIs and this is not compatible with the way scala works. Using JDK6 will help.

A little more about this can be found at: https://groups.google.com/d/topic/scala-user/01CszZu8ga4/discussion

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