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Restore source compatibility with Scala 2.8 + cosmetic changes

This commit is contained in:
Martin Duhem 2015-11-06 13:10:31 +01:00
parent 499c5e7228
commit d41fda6584
1 changed files with 8 additions and 2 deletions
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10
compile/interface/src/main/scala/xsbt/Compat.scala
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@ -1,6 +1,6 @@
package xsbt
import scala.tools.nsc.{ Global, Phase }
import scala.tools.nsc.Global
import scala.tools.nsc.symtab.Flags
/**
@ -87,8 +87,9 @@ abstract class Compat {
def enclosingTopLevelClass: Symbol = sym.toplevelClass
def toplevelClass: Symbol = sourceCompatibilityOnly
def isMacro: Boolean = false
def orElse(alt: => Symbol) = alt
def orElse(alt: => Symbol) = if (sym ne NoSymbol) sym else alt
def asType: TypeSymbol = sym.asInstanceOf[TypeSymbol]
def asMethod: MethodSymbol = sym.asInstanceOf[MethodSymbol]
}
val DummyValue = 0
@ -121,6 +122,11 @@ abstract class Compat {
private def Context_210 = if (settings.isScala211) NoSymbol else global.rootMirror.getClassIfDefined("scala.reflect.macros.Context")
lazy val BlackboxContextClass = global.rootMirror.getClassIfDefined("scala.reflect.macros.blackbox.Context").orElse(Context_210)
lazy val WhiteboxContextClass = global.rootMirror.getClassIfDefined("scala.reflect.macros.whitebox.Context").orElse(Context_210)
/**
* Determines whether a symbol may be compatible with Scala macros' `Context` (e.g. could it be
* the `c: Context` parameter of a macro implementation?). In such cases, we should treat the
* method whose parameter this symbol is as a potential macro implementation.
*/
def isContextCompatible(sym: Symbol) = {
sym.isNonBottomSubClass(BlackboxContextClass) || sym.isNonBottomSubClass(WhiteboxContextClass)
}