Packages

c

scala.tools.nsc.typechecker.StdAttachments

OriginalTreeAttachment

case class OriginalTreeAttachment(original: Global.Tree) extends Product with Serializable

Marks a tree that has been adapted by typer and sets the original tree that was in place before.

Keeping track of the original trees were is an important feature for some compiler plugins (like Scalameta) and the incremental compiler (Zinc). In both cases, adapting trees loses information in some sense and do not allow external tools to capture some information stored in user-defined trees that are optimized away by early phases (mostly, typer).

See how the absence of this attachment blocks Zinc: https://github.com/sbt/zinc/issues/227. Related: https://github.com/scala/scala-dev/issues/340.

This attachment is, at the moment, only used to keep track of constant-folded constants. It has a generic wording in the hope that in the future can be reused in the same context to keep track of other adapted trees.

Source
StdAttachments.scala
Linear Supertypes
Serializable, java.io.Serializable, Product, Equals, AnyRef, Any
Ordering
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Inherited
  1. OriginalTreeAttachment
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. AnyRef
  7. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new OriginalTreeAttachment(original: Global.Tree)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to any2stringadd[Analyzer.OriginalTreeAttachment] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Analyzer.OriginalTreeAttachment, B)
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to ArrowAssoc[Analyzer.OriginalTreeAttachment] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  8. def ensuring(cond: (Analyzer.OriginalTreeAttachment) ⇒ Boolean, msg: ⇒ Any): Analyzer.OriginalTreeAttachment
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to Ensuring[Analyzer.OriginalTreeAttachment] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (Analyzer.OriginalTreeAttachment) ⇒ Boolean): Analyzer.OriginalTreeAttachment
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to Ensuring[Analyzer.OriginalTreeAttachment] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: Boolean, msg: ⇒ Any): Analyzer.OriginalTreeAttachment
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to Ensuring[Analyzer.OriginalTreeAttachment] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean): Analyzer.OriginalTreeAttachment
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to Ensuring[Analyzer.OriginalTreeAttachment] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  14. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to StringFormat[Analyzer.OriginalTreeAttachment] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  15. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  16. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  19. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. val original: Global.Tree
  21. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  22. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  23. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  24. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  25. def →[B](y: B): (Analyzer.OriginalTreeAttachment, B)
    Implicit
    This member is added by an implicit conversion from Analyzer.OriginalTreeAttachment to ArrowAssoc[Analyzer.OriginalTreeAttachment] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from Analyzer.OriginalTreeAttachment to any2stringadd[Analyzer.OriginalTreeAttachment]

Inherited by implicit conversion StringFormat from Analyzer.OriginalTreeAttachment to StringFormat[Analyzer.OriginalTreeAttachment]

Inherited by implicit conversion Ensuring from Analyzer.OriginalTreeAttachment to Ensuring[Analyzer.OriginalTreeAttachment]

Inherited by implicit conversion ArrowAssoc from Analyzer.OriginalTreeAttachment to ArrowAssoc[Analyzer.OriginalTreeAttachment]

Ungrouped