Scratchpad for the macro expander, which is used to store all intermediate data except the details about the runtime.
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 macroExpand
function.
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 coordinates parentTypes
and typedTemplate
and
allows them to complete the synthesis.
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.
Test two objects for inequality.
Test two objects for inequality.
true
if !(this == that), false otherwise.
Equivalent to x.hashCode
except for boxed numeric types and null
.
Equivalent to x.hashCode
except for boxed numeric types and null
.
For numerics, it returns a hash value which is consistent
with value equality: if two value type instances compare
as true, then ## will produce the same hash value for each
of them.
For null
returns a hashcode where null.hashCode
throws a
NullPointerException
.
a hash value consistent with ==
The expression x == that
is equivalent to if (x eq null) that eq null else x.equals(that)
.
The expression x == that
is equivalent to if (x eq null) that eq null else x.equals(that)
.
true
if the receiver object is equivalent to the argument; false
otherwise.
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 SI-8006.
This attachment solves the problem by providing a means of communication between the two Dynamic desugarers, which solves the aforementioned issue.
markMacroImplRef
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).
Cast the receiver object to be of type T0
.
Cast the receiver object to be of type T0
.
Note that the success of a cast at runtime is modulo Scala's erasure semantics.
Therefore the expression 1.asInstanceOf[String]
will throw a ClassCastException
at
runtime, while the expression List(1).asInstanceOf[List[String]]
will not.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the requested type.
the receiver object.
ClassCastException
if the receiver object is not an instance of the erasure of type T0
.
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone
method is platform dependent.
a copy of the receiver object.
not specified by SLS as a member of AnyRef
Tests whether the argument (that
) is a reference to the receiver object (this
).
Tests whether the argument (that
) is a reference to the receiver object (this
).
The eq
method implements an equivalence relation on
non-null instances of AnyRef
, and has three additional properties:
x
and y
of type AnyRef
, multiple invocations of
x.eq(y)
consistently returns true
or consistently returns false
.x
of type AnyRef
, x.eq(null)
and null.eq(x)
returns false
.null.eq(null)
returns true
. When overriding the equals
or hashCode
methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2
), they
should be equal to each other (o1 == o2
) and they should hash to the same value (o1.hashCode == o2.hashCode
).
true
if the argument is a reference to the receiver object; false
otherwise.
The equality method for reference types.
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize
method is invoked, as
well as the interaction between finalize
and non-local returns
and exceptions, are all platform dependent.
not specified by SLS as a member of AnyRef
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
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.
Determines whether the given tree has an associated SuperArgsAttachment.
The hashCode method for reference types.
Test whether the dynamic type of the receiver object is T0
.
Test whether the dynamic type of the receiver object is T0
.
Note that the result of the test is modulo Scala's erasure semantics.
Therefore the expression 1.isInstanceOf[String]
will return false
, while the
expression List(1).isInstanceOf[List[String]]
will return true
.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the specified type.
true
if the receiver object is an instance of erasure of type T0
; false
otherwise.
Determines whether a tree should not be expanded, because someone has put SuppressMacroExpansionAttachment on it or one of its children.
Determines whether a tree should or should not be adapted, because someone has put MacroImplRefAttachment on it.
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
.
After macro expansion is completed, links the expandee and the expansion result by annotating them both with a MacroExpansionAttachment
.
The expanded
parameter is of type Any
, because macros can expand both into trees and into annotations.
Returns the original tree of the macro expansion if the argument is a macro expansion or EmptyTree otherwise.
Loads underlying MacroExpanderAttachment from a macro expandee or returns a default value for that attachment.
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.
Equivalent to !(this eq that)
.
Equivalent to !(this eq that)
.
true
if the argument is not a reference to the receiver object; false
otherwise.
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Convenience method for SuperArgsAttachment
.
Convenience method for SuperArgsAttachment
.
Compared with MacroRuntimeAttachment
this attachment has different a usage pattern,
so it really benefits from a dedicated extractor.
Suppresses macro expansion of the tree by putting SuppressMacroExpansionAttachment on it.
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
a String representation of the object.
Unmarks the tree as a macro impl reference (see markMacroImplRef
for more information).
Unmarks the tree as a macro impl reference (see markMacroImplRef
for 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.
Unsuppresses macro expansion of the tree by removing SuppressMacroExpansionAttachment from it and its children.