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 Phases to any2stringadd[Phases] performed by method any2stringadd in scala.Predef.

   Definition Classes

   any2stringadd

4.  def ->[B](y: B): (Phases, B)

   Implicit

   This member is added by an implicit conversion from Phases to ArrowAssoc[Phases] 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 boundSymbolsInCallstack: List[tools.nsc.Global.Symbol]

   Definition Classes

   Reify

8.  val calculate: tools.nsc.Global.Traverser { ... /* 2 definitions in type refinement */ }

   Merely traverses the reifiee and records symbols local to the reifee along with their metalevels.

   Merely traverses the reifiee and records symbols local to the reifee along with their metalevels.

   Definition Classes

   Calculate

9.  def call(fname: String, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

   Definition Classes

   GenUtils

10.  def clone(): AnyRef

    Attributes

    protected[lang]

    Definition Classes

    AnyRef

    Annotations

    @throws( ... ) @native()

11.  def current: Any

    Definition Classes

    Reify

12.  def currents: List[Any]

    Definition Classes

    Reify

13.  def ensuring(cond: (Phases) ⇒ Boolean, msg: ⇒ Any): Phases

    Implicit

    This member is added by an implicit conversion from Phases to Ensuring[Phases] performed by method Ensuring in scala.Predef.

    Definition Classes

    Ensuring

14.  def ensuring(cond: (Phases) ⇒ Boolean): Phases

    Implicit

    This member is added by an implicit conversion from Phases to Ensuring[Phases] performed by method Ensuring in scala.Predef.

    Definition Classes

    Ensuring

15.  def ensuring(cond: Boolean, msg: ⇒ Any): Phases

    Implicit

    This member is added by an implicit conversion from Phases to Ensuring[Phases] performed by method Ensuring in scala.Predef.

    Definition Classes

    Ensuring

16.  def ensuring(cond: Boolean): Phases

    Implicit

    This member is added by an implicit conversion from Phases to Ensuring[Phases] performed by method Ensuring in scala.Predef.

    Definition Classes

    Ensuring

17.  final def eq(arg0: AnyRef): Boolean

    Definition Classes

    AnyRef

18.  def equals(arg0: Any): Boolean

    Definition Classes

    AnyRef → Any

19.  def finalize(): Unit

    Attributes

    protected[lang]

    Definition Classes

    AnyRef

    Annotations

    @throws( classOf[java.lang.Throwable] )

20.  def formatted(fmtstr: String): String

    Implicit

    This member is added by an implicit conversion from Phases to StringFormat[Phases] performed by method StringFormat in scala.Predef.

    Definition Classes

    StringFormat

    Annotations

    @inline()

21.  final def getClass(): Class[_]

    Definition Classes

    AnyRef → Any

    Annotations

    @native()

22.  def hashCode(): Int

    Definition Classes

    AnyRef → Any

    Annotations

    @native()

23.  def isCrossStageTypeBearer(tree: tools.nsc.Global.Tree): Boolean

    Definition Classes

    GenUtils

24.  final def isInstanceOf[T0]: Boolean

    Definition Classes

    Any

25.  def isSemiConcreteTypeMember(tpe: tools.nsc.Global.Type): Boolean

    Definition Classes

    GenUtils

26.  val metalevels: tools.nsc.Global.Transformer { ... /* 4 definitions in type refinement */ }

    Makes sense of cross-stage bindings.

    Makes sense of cross-stage bindings.

    ---

    Analysis of cross-stage bindings becomes convenient if we introduce the notion of metalevels. Metalevel of a tree is a number that gets incremented every time you reify something and gets decremented when you splice something. Metalevel of a symbol is equal to the metalevel of its definition.

    Example 1. Consider the following snippet:

    reify { val x = 2 // metalevel of symbol x is 1, because it's declared inside reify val y = reify{x} // metalevel of symbol y is 1, because it's declared inside reify // metalevel of Ident(x) is 2, because it's inside two reifies y.splice // metalevel of Ident(y) is 0, because it's inside a designator of a splice }

    Cross-stage bindings are introduced when symbol.metalevel != curr_metalevel. Both bindings introduced in Example 1 are cross-stage.

    Depending on what side of the inequality is greater, the following situations might occur:

    1) symbol.metalevel < curr_metalevel. In this case reifier will generate a free variable that captures both the name of the symbol (to be compiled successfully) and its value (to be run successfully). For example, x in Example 1 will be reified as follows: Ident(newFreeVar("x", IntTpe, x))

    2) symbol.metalevel > curr_metalevel. This leads to a metalevel breach that violates intuitive perception of splicing. As defined in macro spec, splicing takes a tree and inserts it into another tree - as simple as that. However, how exactly do we do that in the case of y.splice? In this very scenario we can use dataflow analysis and inline it, but what if y were a var, and what if it were calculated randomly at runtime?

    This question has a genuinely simple answer. Sure, we cannot resolve such splices statically (i.e. during macro expansion of reify), but now we have runtime toolboxes, so noone stops us from picking up that reified tree and evaluating it at runtime (in fact, this is something that Expr.splice does transparently).

    This is akin to early vs late binding dilemma. The prior is faster, plus, the latter (implemented with reflection) might not work because of visibility issues or might be not available on all platforms. But the latter still has its uses, so I'm allowing metalevel breaches, but introducing the -Xlog-runtime-evals to log them.

    upd. We no longer do that. In case of a runaway splice inside a reify, one will get a static error. Why? Unfortunately, the cute idea of transparently converting between static and dynamic splices has failed. 1) Runtime eval that services dynamic splices requires scala-compiler.jar, which might not be on library classpath 2) Runtime eval incurs a severe performance penalty, so it'd better to be explicit about it

    ---

    As we can see, the only problem is the fact that lhs'es of splice can be code blocks that can capture variables from the outside. Code inside the lhs of an splice is not reified, while the code from the enclosing reify is.

    Hence some bindings become cross-stage, which is not bad per se (in fact, some cross-stage bindings have sane semantics, as in the example above). However this affects freevars, since they are delicate inter-dimensional beings that refer to both current and next planes of existence. When splicing tears the fabric of the reality apart, some freevars have to go single-dimensional to retain their sanity.

    Example 2. Consider the following snippet:

    reify { val x = 2 reify{x}.splice }

    Since the result of the inner reify is wrapped in a splice, it won't be reified together with the other parts of the outer reify, but will be inserted into that result verbatim.

    The inner reify produces an Expr[Int] that wraps Ident(freeVar("x", IntTpe, x)). However the freevar the reification points to will vanish when the compiler processes the outer reify. That's why we need to replace that freevar with a regular symbol that will point to reified x.

    Example 3. Consider the following fragment:

    reify { val x = 2 val y = reify{x} y.splice }

    In this case the inner reify doesn't appear next to splice, so it will be reified together with x. This means that no special processing is needed here.

    Example 4. Consider the following fragment:

    reify { val x = 2 { val y = 2 val z = reify{reify{x + y}} z.splice }.splice }

    The reasoning from Example 2 still holds here - we do need to inline the freevar that refers to x. However, we must not touch anything inside the splice'd block, because it's not getting reified.

    Definition Classes

    Metalevels

27.  def mirrorBuildCall(name: tools.nsc.Global.TermName, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

28.  def mirrorCall(name: tools.nsc.Global.TermName, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

29.  def mirrorFactoryCall(prefix: tools.nsc.Global.TermName, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

30.  def mirrorFactoryCall(value: Product, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

31.  def mirrorMirrorCall(name: tools.nsc.Global.TermName, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

32.  def mirrorMirrorSelect(name: tools.nsc.Global.TermName): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

33.  def mirrorSelect(name: tools.nsc.Global.TermName): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

34.  def mirrorSelect(name: String): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

35.  def mkList(args: List[tools.nsc.Global.Tree]): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

36.  def mkListMap(args: List[tools.nsc.Global.Tree]): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

37.  lazy val mkReificationPipeline: (tools.nsc.Global.Tree) ⇒ tools.nsc.Global.Tree
38.  final def ne(arg0: AnyRef): Boolean

    Definition Classes

    AnyRef

39.  final def notify(): Unit

    Definition Classes

    AnyRef

    Annotations

    @native()

40.  final def notifyAll(): Unit

    Definition Classes

    AnyRef

    Annotations

    @native()

41.  def origin(sym: tools.nsc.Global.Symbol): String

    Definition Classes

    GenUtils

42.  def path(fullname: String, mkName: (String) ⇒ tools.nsc.Global.Name): tools.nsc.Global.Tree

    An (unreified) path that refers to definition with given fully qualified name

    An (unreified) path that refers to definition with given fully qualified name

    mkName

    Creator for last portion of name (either TermName or TypeName)

    Definition Classes

    GenUtils

43.  def reificationIsConcrete: Boolean

    Keeps track of whether this reification contains abstract type parameters

    Keeps track of whether this reification contains abstract type parameters

    Definition Classes

    GenTypes

44.  def reify(reifee: Any): tools.nsc.Global.Tree

    Reifies any supported value.

    Reifies any supported value. For internal use only, use reified instead.

    Definition Classes

    Reify

45.  def reifyAnnotationInfo(ann: tools.nsc.Global.AnnotationInfo): tools.nsc.Global.Tree

    Definition Classes

    GenAnnotationInfos

46.  def reifyBuildCall(name: tools.nsc.Global.TermName, args: Any*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

47.  def reifyFlags(flags: tools.nsc.Global.FlagSet): tools.nsc.Global.Tree

    Definition Classes

    GenTrees

48.  def reifyFreeTerm(binding: tools.nsc.Global.Tree): tools.nsc.Global.Tree

    Definition Classes

    GenSymbols

49.  def reifyFreeType(binding: tools.nsc.Global.Tree): tools.nsc.Global.Tree

    Definition Classes

    GenSymbols

50.  def reifyList(xs: List[Any]): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

51.  def reifyMirrorObject(x: Product): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

52.  def reifyMirrorObject(name: String): tools.nsc.Global.Tree

    Reify a case object defined in Mirror

    Reify a case object defined in Mirror

    Definition Classes

    GenUtils

53.  def reifyModifiers(m: tools.nsc.Global.Modifiers): tools.nsc.Global.Tree

    Definition Classes

    GenTrees

54.  def reifyName(name: tools.nsc.Global.Name): tools.nsc.Global.Tree

    Definition Classes

    GenNames

55.  def reifyPosition(pos: tools.nsc.Global.Position): tools.nsc.Global.Tree

    Definition Classes

    GenPositions

56.  def reifyProduct(prefix: String, elements: List[Any]): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

57.  def reifyProduct(x: Product): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

58.  def reifySymDef(sym: tools.nsc.Global.Symbol): tools.nsc.Global.Tree

    Definition Classes

    GenSymbols

59.  def reifySymRef(sym: tools.nsc.Global.Symbol): tools.nsc.Global.Tree

    Reify a reference to a symbol

    Reify a reference to a symbol

    Definition Classes

    GenSymbols

60.  def reifyTree(tree: tools.nsc.Global.Tree): tools.nsc.Global.Tree

    Reify a tree.

    Reify a tree. For internal use only, use reified instead.

    Definition Classes

    GenTrees

61.  def reifyTreeSymbols: Boolean

    Definition Classes

    GenTrees

62.  def reifyTreeSyntactically(tree: tools.nsc.Global.Tree): tools.nsc.Global.Tree

    Definition Classes

    GenTrees

63.  def reifyTreeTypes: Boolean

    Definition Classes

    GenTrees

64.  def reifyType(tpe: tools.nsc.Global.Type): tools.nsc.Global.Tree

    Reify a type.

    Reify a type. For internal use only, use reified instead.

    Definition Classes

    GenTypes

65.  val reshape: tools.nsc.Global.Transformer { ... /* 2 definitions in type refinement */ }

    Rolls back certain changes that were introduced during typechecking of the reifee.

    Rolls back certain changes that were introduced during typechecking of the reifee.

    These include: * Undoing macro expansions * Replacing type trees with TypeTree(tpe) * Reassembling CompoundTypeTrees into reifiable form * Transforming Modifiers.annotations into Symbol.annotations * Transforming Annotated annotations into AnnotatedType annotations * Transforming Annotated(annot, expr) into Typed(expr, TypeTree(Annotated(annot, _)) * Non-idempotencies of the typechecker: https://github.com/scala/bug/issues/5464

    Definition Classes

    Reshape

66.  def scalaFactoryCall(name: String, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

67.  def scalaFactoryCall(name: tools.nsc.Global.TermName, args: tools.nsc.Global.Tree*): tools.nsc.Global.Tree

    Definition Classes

    GenUtils

68.  def spliceType(tpe: tools.nsc.Global.Type): tools.nsc.Global.Tree

    Definition Classes

    GenTypes

69.  def symtab: Reifier.SymbolTable

    Symbol table of the reifee.

    Symbol table of the reifee.

    Keeps track of auxiliary symbols that are necessary for this reification session. These include: 1) Free vars (terms, types and existentials), 2) Non-locatable symbols (sometimes, e.g. for RefinedTypes, we need to reify these; to do that we create their copies in the reificode) 3) Non-locatable symbols that are referred by #1, #2 and #3

    Exposes three main methods: 1) syms that lists symbols belonging to the table, 2) symXXX family of methods that provide information about the symbols in the table, 3) encode that renders the table into a list of trees (recursively populating #3 and setting up initialization code for #1, #2 and #3)

    Definition Classes

    GenSymbols

70.  final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes

    AnyRef

71.  def termPath(fullname: String): tools.nsc.Global.Tree

    An (unreified) path that refers to term definition with given fully qualified name

    An (unreified) path that refers to term definition with given fully qualified name

    Definition Classes

    GenUtils

72.  def toString(): String

    Definition Classes

    AnyRef → Any

73.  final def wait(): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

74.  final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

75.  final def wait(arg0: Long): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... ) @native()

76.  def →[B](y: B): (Phases, B)

    Implicit

    This member is added by an implicit conversion from Phases to ArrowAssoc[Phases] performed by method ArrowAssoc in scala.Predef.

    Definition Classes

    ArrowAssoc

77.  object TypedOrAnnotated

    Definition Classes

    GenUtils