将scalac插件拆分为多个文件
我想将我的
scalac
import global._
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")
}
}
}
}
}
import global._
Component
DivByZeroPhase
没有找到相关结果
已邀请:
3 个回复
期差骇蓟
瞥同忙接
trait CompilerAccess { val global: tools.nsc.Global }只声明作为依赖：trait TreeTraverser { this: CompilerAccess => import global._ ... }trait SomeRefactoring extends TreeTraverser with OtherTrait with MoreTraits { val global = //wherever you get your global from }河饶办斜施
class TemplateComponent(val global: Global) extends PluginComponent { import global._ val runsAfter = List[String]("refchecks") val phaseName = "plugintemplate" def newPhase(prev: Phase) = new StdPhase(prev) { override def name = phaseName def apply(unit:CompilationUnit) = { } } }