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import scala.reflect.makro.Context
object Macros {
def impl(c: Context) = {
import c.mirror._
val Apply(fun, args) = c.enclosingImplicits(0)._2
val fileName = fun.pos.fileInfo.getName
val line = fun.pos.line
val charOffset = fun.pos.point
c.reify { SourceLocation(c.literal(fileName).eval, c.literal(line).eval, c.literal(charOffset).eval) }
}
implicit def sourceLocation: SourceLocation = macro impl
}
case class SourceLocation(
/** The name of the source file */
val fileName: String,
/** The line number */
val line: Int,
/** The character offset */
val charOffset: Int
)
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