我想将我的scalac
插件拆分为多个文件。这听起来很容易,但由于路径依赖类型问题来自import global._
系列,所以我没有成功将其解决。将scalac插件拆分为多个文件
这里的莱·斯波的样本插件:
package localhost
import scala.tools.nsc
import nsc.Global
import nsc.Phase
import nsc.plugins.Plugin
import nsc.plugins.PluginComponent
class DivByZero(val global: Global) extends Plugin {
import global._
val name = "divbyzero"
val description = "checks for division by zero"
val components = List[PluginComponent](Component)
private object Component extends PluginComponent {
val global: DivByZero.this.global.type = DivByZero.this.global
val runsAfter = "refchecks"
// Using the Scala Compiler 2.8.x the runsAfter should be written as below
// val runsAfter = List[String]("refchecks");
val phaseName = DivByZero.this.name
def newPhase(_prev: Phase) = new DivByZeroPhase(_prev)
class DivByZeroPhase(prev: Phase) extends StdPhase(prev) {
override def name = DivByZero.this.name
def apply(unit: CompilationUnit) {
for (tree @ Apply(Select(rcvr, nme.DIV), List(Literal(Constant(0)))) <- unit.body;
if rcvr.tpe <:< definitions.IntClass.tpe)
{
unit.error(tree.pos, "definitely division by zero")
}
}
}
}
}
我怎么可以把自己的文件Component
和DivByZeroPhase
而无需范围import global._
?