如何让 Scala 编译器插件在 Scala IDE 中工作
注意：这是 Scala-IDE 邮件列表上同一问题的精确转发，我在 5 天后得到了零答复并放弃了等待。
我正在编写一个 Scala 编译器插件。目前它被称为 scalawrapper（但我以后可能会找到更好的名字）。我有 安装了 Typesafe Stack，并将我的插件放在下面：
C:\Program Files\typesafe-stack\misc\scala-devel\plugins
现在我可以像这样调用 scalac：
scalac -classpath ... -Xplugin-require:scalawrapper test\...
它会自动查找并使用我的插件。
不幸的是，我无法让 Scala-IDE 使用它。我总是得到 缺少必需的插件：scalawrapper。在“项目属性 \Scala Compiler（使用项目设置）\Advanced”选项卡，我已输入 Xplugin-require 字段中的 scalawrapper ，并且它有效，因为我得到 错误。但我在 Xpluginsdir 中输入的任何内容似乎都没有 影响。
我已经尝试过上面给出的绝对路径，也尝试过转发 和反斜杠，已尝试使用不带空格的临时目录 在其中，已经尝试过相对于项目目录，已经尝试过相对 到工作区。它只是不会使用任何东西。我还应该注意到 is 不是特定于我自己的插件，因为我尝试使用 ScalaCL 之前版本的 Scala-IDE 中的插件，并且失败 完全相同的原因。
我今天刚刚更新（2011 年 10 月 15 日），所以应该有最新的 版本（看来我终于可以明确地将缩进设置为4， 但也许我只是忽略了过去的设置）。
有人可以告诉我它实际期望什么，以及它的用途是什么 当我没有在 Xpluginsdir 中放置任何内容时默认吗？
Note: This is an exact repost of the same question on the Scala-IDE mailing list, where I got zero reply and gave up waiting after 5 days.
I'm writing a Scala Compiler Plugin. It's currently called
scalawrapper (but I might find a better name later). I have the
Typesafe Stack installed, and I put my plugin in it under:
C:\Program Files\typesafe-stack\misc\scala-devel\plugins
Now I can call scalac like this:
scalac -classpath ... -Xplugin-require:scalawrapper test\...
and it finds and uses my plugin automatically.
Unfortunately, I just can't get the Scala-IDE to use it. I always getMissing required plugin: scalawrapper. In the "Project Properties
\Scala Compiler (Use Project Settings)\Advanced" tab, I have entered
scalawrapper in the Xplugin-require field, and that works, since I get
the error. But nothing I can type in Xpluginsdir seem to have any
effect.
I have tried the absolute path given above, have tried with forward
and backward slashes, have tried a temporary directory without spaces
in it, have tried relative to project directory, have tried relative
to workspace. It just will not use anything. I should also note that
is is not specific to my own plugin, as I tried to use the ScalaCL
plugin before in a previous version of the Scala-IDE, and failed for
the exact same reason.
I have just updated today (15.10.2011) and so should have the latest
version (it seems I can finally explicitly set the indentation to 4,
but maybe I just overlooked the setting in the past).
Can someone tell me what it actually expects, and what is uses as
default when I don't put anything in Xpluginsdir?
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Scala IDE 使用演示编译器，而不是您已安装的编译器。要在 Scala IDE 中使用插件，您需要在 Eclipse 的首选项中指定它。
尝试
Windows->首选项->Scala->编译器。请参阅“高级”选项卡。这些路径是相对于工作空间的。编辑：当我说相对于工作区时，我指的是存储 .metadata 的实际工作区目录（
$workspace_loc）。我有一个项目，其中包括源代码的项目文件存储在一个目录中，工作区位于其他位置，即$project_loc(c:\code\project\source) 与$workspace_loc(c:\code\project\workspace)。您在编译器参数中指定的目录是相对于工作区 ($workspace_loc) 的。要了解您是否有类似的设置，请转到项目并选择
Properties->Resource->Linked Resources。我在
$workspace_loc下创建了一个名为plugin 的目录，并将 jar 文件放置在其中。在Windows->Preferences->Scala->CompilerAdvanced 选项卡下，我有请注意，您也可以在项目属性中指定插件，但它仍然使用
$workspace_loc< /代码>。上面的配置对我有用。The Scala IDE uses the presentation compiler, not the compiler that you've installed. To use a plugin, with Scala IDE, you need to specify it in the preferences in Eclipse.
Try
Windows->Preferences->Scala->Compiler. See the Advanced tab. The paths are relative to the workspace.EDIT: When I say relative to the workspace, I mean the actual workspace directory under which the .metadata is stored (
$workspace_loc). I have a project where project files including the source code is stored in one directory and the workspace is elsewhere, i.e the$project_loc(c:\code\project\source) is different from the$workspace_loc(c:\code\project\workspace). The directory that you specify in the compiler parameters is relative to the workspace ($workspace_loc).To find out if you have a similar setup, go to the project and select
Properties->Resource->Linked Resources.I created a directory under
$workspace_loccalled plugin and placed the jar file in there. UnderWindows->Preferences->Scala->CompilerAdvanced tab I havePlease note that you can specify the plugin in the project properties as well, but it still uses
$workspace_loc. The above configuration works for me.