trait StdAttachments extends AnyRef
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Type Members
- type MacroContext = Analyzer.UnaffiliatedMacroContext { val universe: StdAttachments.this.global.type }
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case class
MacroExpanderAttachment(original: Global.Tree, desugared: Global.Tree) extends Product with Serializable
Scratchpad for the macro expander, which is used to store all intermediate data except the details about the runtime.
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case class
MacroExpansionAttachment(expandee: Global.Tree, expanded: Any) extends Product with Serializable
Is added by the macro engine to originals and results of macro expansions.
Is added by the macro engine to originals and results of macro expansions. Stores the original expandee as it entered the
macroExpandfunction. - case class MacroRuntimeAttachment(delayed: Boolean, typerContext: Analyzer.Context, macroContext: Option[Analyzer.MacroContext]) extends Product with Serializable
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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.
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.
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case class
SuperArgsAttachment(argss: List[List[Global.Tree]]) extends Product with Serializable
After being synthesized by the parser, primary constructors aren't fully baked yet.
After being synthesized by the parser, primary constructors aren't fully baked yet. A call to super in such constructors is just a fill-me-in-later dummy resolved later by
parentTypes. This attachment coordinatesparentTypesandtypedTemplateand allows them to complete the synthesis. -
type
UnaffiliatedMacroContext = Context
Carries information necessary to expand the host tree.
Carries information necessary to expand the host tree. At times we need to store this info, because macro expansion can be delayed until its targs are inferred. After a macro application has been successfully expanded, this attachment is destroyed.
Value Members
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final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
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final
def
##(): Int
- Definition Classes
- AnyRef → Any
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def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from StdAttachments to any2stringadd[StdAttachments] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
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def
->[B](y: B): (StdAttachments, B)
- Implicit
- This member is added by an implicit conversion from StdAttachments to ArrowAssoc[StdAttachments] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
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final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
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final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
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def
clone(): AnyRef
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @native() @throws( ... )
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def
ensuring(cond: (StdAttachments) ⇒ Boolean, msg: ⇒ Any): StdAttachments
- Implicit
- This member is added by an implicit conversion from StdAttachments to Ensuring[StdAttachments] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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def
ensuring(cond: (StdAttachments) ⇒ Boolean): StdAttachments
- Implicit
- This member is added by an implicit conversion from StdAttachments to Ensuring[StdAttachments] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): StdAttachments
- Implicit
- This member is added by an implicit conversion from StdAttachments to Ensuring[StdAttachments] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): StdAttachments
- Implicit
- This member is added by an implicit conversion from StdAttachments to Ensuring[StdAttachments] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
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def
finalize(): Unit
- Attributes
- protected[java.lang]
- Definition Classes
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- Annotations
- @throws( classOf[java.lang.Throwable] )
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def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from StdAttachments to StringFormat[StdAttachments] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
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final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
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def
hasMacroExpansionAttachment(any: Any): Boolean
Determines whether the target is either an original or a result of a macro expansion.
Determines whether the target is either an original or a result of a macro expansion. The parameter is of type
Any, because macros can expand both into trees and into annotations. -
def
hasSuperArgs(tree: Global.Tree): Boolean
Determines whether the given tree has an associated SuperArgsAttachment.
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def
hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- def isDynamicRewrite(tree: Global.Tree): Boolean
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final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
def
isMacroExpansionSuppressed(tree: Global.Tree): Boolean
Determines whether a tree should not be expanded, because someone has put SuppressMacroExpansionAttachment on it or one of its children.
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def
isMacroImplRef(tree: Global.Tree): Boolean
Determines whether a tree should or should not be adapted, because someone has put MacroImplRefAttachment on it.
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def
linkExpandeeAndDesugared(expandee: Global.Tree, desugared: Global.Tree): Unit
After macro expansion is completed, links the expandee and the expansion result by annotating them both with a
MacroExpansionAttachment. -
def
linkExpandeeAndExpanded(expandee: Global.Tree, expanded: Any): Unit
After macro expansion is completed, links the expandee and the expansion result by annotating them both with a
MacroExpansionAttachment.After macro expansion is completed, links the expandee and the expansion result by annotating them both with a
MacroExpansionAttachment. Theexpandedparameter is of typeAny, because macros can expand both into trees and into annotations. -
def
macroExpandee(tree: Global.Tree): Global.Tree
Returns the original tree of the macro expansion if the argument is a macro expansion or EmptyTree otherwise.
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def
macroExpanderAttachment(tree: Global.Tree): Analyzer.MacroExpanderAttachment
Loads underlying MacroExpanderAttachment from a macro expandee or returns a default value for that attachment.
- def markDynamicRewrite(tree: Global.Tree): Global.Tree
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def
markMacroImplRef(tree: Global.Tree): Global.Tree
Marks the tree as a macro impl reference, which is a naked reference to a method.
Marks the tree as a macro impl reference, which is a naked reference to a method.
This is necessary for typechecking macro impl references (see
DefaultMacroCompiler.defaultResolveMacroImpl), because otherwise typing a naked reference will result in the "follow this method with_if you want to treat it as a partially applied function" errors.This mark suppresses adapt except for when the annottee is a macro application.
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final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
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final
def
notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
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final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
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def
superArgs(tree: Global.Tree): Option[List[List[Global.Tree]]]
Convenience method for
SuperArgsAttachment.Convenience method for
SuperArgsAttachment. Compared withMacroRuntimeAttachmentthis attachment has different a usage pattern, so it really benefits from a dedicated extractor. -
def
suppressMacroExpansion(tree: Global.Tree): Global.Tree
Suppresses macro expansion of the tree by putting SuppressMacroExpansionAttachment on it.
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final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
- Definition Classes
- AnyRef → Any
- def unmarkDynamicRewrite(tree: Global.Tree): Global.Tree
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def
unmarkMacroImplRef(tree: Global.Tree): Global.Tree
Unmarks the tree as a macro impl reference (see
markMacroImplReffor more information).Unmarks the tree as a macro impl reference (see
markMacroImplReffor more information).This is necessary when a tree that was previously deemed to be a macro impl reference, typechecks to be a macro application. Then we need to unmark it, expand it and try to treat its expansion as a macro impl reference.
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def
unsuppressMacroExpansion(tree: Global.Tree): Global.Tree
Unsuppresses macro expansion of the tree by removing SuppressMacroExpansionAttachment from it and its children.
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final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
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final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
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final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @throws( ... )
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def
→[B](y: B): (StdAttachments, B)
- Implicit
- This member is added by an implicit conversion from StdAttachments to ArrowAssoc[StdAttachments] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
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object
DynamicRewriteAttachment extends Product with Serializable
Since mkInvoke, the applyDynamic/selectDynamic/etc desugarer, is disconnected from typedNamedApply, the applyDynamicNamed argument rewriter, the latter doesn’t know whether it needs to apply the rewriting because the application has just been desugared or it needs to hold on because it’s already performed a desugaring on this tree.
Since mkInvoke, the applyDynamic/selectDynamic/etc desugarer, is disconnected from typedNamedApply, the applyDynamicNamed argument rewriter, the latter doesn’t know whether it needs to apply the rewriting because the application has just been desugared or it needs to hold on because it’s already performed a desugaring on this tree. This has led to scala/bug#8006.
This attachment solves the problem by providing a means of communication between the two Dynamic desugarers, which solves the aforementioned issue.
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object
MacroImplRefAttachment extends Product with Serializable
- See also
markMacroImplRef
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object
MethodValueAttachment extends Product with Serializable
Added to trees that appear in a method value, e.g., to
f(x)inf(x) _ -
object
SuppressMacroExpansionAttachment extends Product with Serializable
When present, suppresses macro expansion for the host.
When present, suppresses macro expansion for the host. This is occasionally necessary, e.g. to prohibit eta-expansion of macros.
Does not affect expandability of child nodes, there's context.withMacrosDisabled for that (but think thrice before using that API - see the discussion at https://github.com/scala/scala/pull/1639).
The Scala compiler and reflection APIs.