我们应该直接使用 ScalaSignature 吗? [英] Should we use the ScalaSignature directly?

问题描述

ScalaSignature 是一个注解.它包含元信息.

The ScalaSignature is an annotation. It contains meta informations.

• https://github.com/scala/scala/blob/v2.9.2/src/library/scala/reflect/ScalaSignature.java

然后提供解析器.但是 scala-library.jar 不包含解析器.看起来像是秘密 API.

And then parser is provided. but scala-library.jar is not contains the parser. It seem like secret API.

• https:///github.com/scala/scala/blob/v2.9.2/src/scalap/scala/tools/scalap/scalax/rules/scalasig/ScalaSig.scala

但我知道一些使用 ScalaSignature 的库.

But I know a few libraries using ScalaSignature.

• https://github.com/lift/framework/blob/2.4-release/core/json/src/main/scala/net/liftweb/json/ScalaSig.scala
• https:///github.com/msgpack/msgpack-scala/blob/version-0.6.6/src/main/scala/org/msgpack/scalautil/ScalaSigUtil.scala
• https://github.com/havocp/beaucatcher/blob/v0.5.0/caseclass/src/main/scala/org/beaucatcher/caseclass/ClassAnalysis.scala

顺便说一下，我找不到 ScalaSignature 的正式规范.我担心 ScalaSignature 的规范可能会因 Scala 版本的变化而改变.此外，我认为使用 ScalaSignature 还存在一些其他风险，因为规范不存在.

By the way, I could not found formal specification of ScalaSignature. I worry that the specification of ScalaSignature may change by a Scala version change. Also I think there are some other risks using ScalaSignature because specification doesn't exists.

此外，Scala2.10 将提供一个新的反射 API.2.10 发布后，我认为使用 ScalaSignature 的原因会减少.

Further, Scala2.10 will provide a new reflection API. I think the reason for using ScalaSignature will decrease, when 2.10 is released.

因此，应该使用 ScalaSignature 吗?

Thus, should one use the ScalaSignature?

推荐答案

Scala 2.10 中的反射 API 提供了官方支持的对 Java 反射 + Scala 签名的抽象.如果 ScalaSignature 格式改变，反射也会相应改变.

Reflection API in Scala 2.10 provides an officially supported abstraction over Java reflection + Scala signatures. If ScalaSignature format changes, reflection will change accordingly.

这篇关于我们应该直接使用 ScalaSignature 吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！