scala.meta.internal.parsers.NestedContext.scala Maven / Gradle / Ivy

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Scalameta APIs for parsing and their baseline implementation

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package scala.meta.internal.parsers

/** Utility for tracking a context, like whether we are inside a pattern or a quote. */
private[parsers] trait NestedContext {
  private var nested = 0
  def within[T](body: => T): T = {
    nested += 1
    try body
    finally nested -= 1
  }
  @inline
  def isInside() = isDeeper(0)
  @inline
  def isDeeper(level: Int) = nested > level
}