com.avsystem.commons.annotation.positioned.scala Maven / Gradle / Ivy

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AVSystem commons library for Scala

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package com.avsystem.commons
package annotation

/**
  * Annotate a symbol (i.e. class, method, parameter, etc.) with `@positioned(positioned.here)` to retain source
  * position information for that symbol to be available in macro implementations which inspect that symbol.
  * This is necessary e.g. for determining declaration order of subtypes of sealed hierarchies in macro implementations.
  * This annotation is only needed when macro is invoked in a different source file than the source file of inspected
  * symbol. If macro is invoked in the same file, source position is always available.
  */
class positioned(val point: Int) extends StaticAnnotation
object positioned {
  def here: Int = macro macros.misc.MiscMacros.posPoint
}