object BTypes
- Source
- BTypes.scala
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- BTypes
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Type Members
-
final
case class
InlineInfo
(traitImplClassSelfType: Option[InternalName], isEffectivelyFinal: Boolean, sam: Option[String], methodInfos: Map[String, MethodInlineInfo], warning: Option[ClassInlineInfoWarning]) extends Product with Serializable
Metadata about a ClassBType, used by the inliner.
Metadata about a ClassBType, used by the inliner.
More information may be added in the future to enable more elaborate inlinine heuristics. Note that this class should contain information that can only be obtained from the ClassSymbol. Information that can be computed from the ClassNode should be added to the call graph instead.
- traitImplClassSelfType
Some(tp)
if this InlineInfo describes a trait, and theself
parameter type of the methods in the implementation class is not the trait itself. Example: trait T { self: U => def f = 1 } Generates something like: class T$class { static def f(self: U) = 1 } In order to inline a trat method call, the INVOKEINTERFACE is rewritten to an INVOKESTATIC of the impl class, so we need the self type (U) to get the right signature.None
if the self type is the interface type, or if this InlineInfo does not describe a trait.- isEffectivelyFinal
True if the class cannot have subclasses: final classes, module classes, trait impl classes.
- sam
If this class is a SAM type, the SAM's "$name$descriptor".
- methodInfos
The MethodInlineInfos for the methods declared in this class. The map is indexed by the string s"$name$descriptor" (to disambiguate overloads).
- warning
Contains an warning message if an error occurred when building this InlineInfo, for example if some classfile could not be found on the classpath. This warning can be reported later by the inliner.
-
type
InternalName = String
A marker for strings that represent class internal names.
A marker for strings that represent class internal names. Ideally the type would be incompatible with String, for example by making it a value class. But that would create overhead in a Collection[InternalName].
-
final
case class
MethodInlineInfo
(effectivelyFinal: Boolean, traitMethodWithStaticImplementation: Boolean, annotatedInline: Boolean, annotatedNoInline: Boolean) extends Product with Serializable
Metadata about a method, used by the inliner.
Metadata about a method, used by the inliner.
- effectivelyFinal
True if the method cannot be overridden (in Scala)
- traitMethodWithStaticImplementation
True if the method is an interface method method of a trait method and has a static counterpart in the implementation class.
- annotatedInline
True if the method is annotated
@inline
- annotatedNoInline
True if the method is annotated
@noinline
Value Members
-
final
def
!=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
true
if !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
Equivalent to
x.hashCode
except for boxed numeric types andnull
.Equivalent to
x.hashCode
except for boxed numeric types andnull
. 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. Fornull
returns a hashcode wherenull.hashCode
throws aNullPointerException
.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
-
final
def
==(arg0: Any): Boolean
The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.- returns
true
if the receiver object is equivalent to the argument;false
otherwise.
- Definition Classes
- AnyRef → Any
- val EmptyInlineInfo: InlineInfo
- val ScalaAttributeName: String
- val ScalaSigAttributeName: String
-
final
def
asInstanceOf[T0]: T0
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 aClassCastException
at runtime, while the expressionList(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.- returns
the receiver object.
- Definition Classes
- Any
- Exceptions thrown
ClassCastException
if the receiver object is not an instance of the erasure of typeT0
.
-
def
clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the
clone
method is platform dependent.- returns
a copy of the receiver object.
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
- Note
not specified by SLS as a member of AnyRef
-
final
def
eq(arg0: AnyRef): Boolean
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 ofAnyRef
, and has three additional properties:- It is consistent: for any non-null instances
x
andy
of typeAnyRef
, multiple invocations ofx.eq(y)
consistently returnstrue
or consistently returnsfalse
. - For any non-null instance
x
of typeAnyRef
,x.eq(null)
andnull.eq(x)
returnsfalse
. null.eq(null)
returnstrue
.
When overriding the
equals
orhashCode
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
).- returns
true
if the argument is a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
- It is consistent: for any non-null instances
-
def
equals(arg0: Any): Boolean
The equality method for reference types.
-
def
finalize(): Unit
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 betweenfinalize
and non-local returns and exceptions, are all platform dependent.- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
- Note
not specified by SLS as a member of AnyRef
-
final
def
getClass(): Class[_]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
- returns
a class object corresponding to the runtime type of the receiver.
- Definition Classes
- AnyRef → Any
-
def
hashCode(): Int
The hashCode method for reference types.
-
final
def
isInstanceOf[T0]: Boolean
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 returnfalse
, while the expressionList(1).isInstanceOf[List[String]]
will returntrue
. 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.- returns
true
if the receiver object is an instance of erasure of typeT0
;false
otherwise.
- Definition Classes
- Any
-
final
def
ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that)
.Equivalent to
!(this eq that)
.- returns
true
if the argument is not a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
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.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
-
final
def
notifyAll(): Unit
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.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
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.
- returns
a String representation of the object.
- Definition Classes
- AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
The Scala compiler API.
The following resources are useful for Scala plugin/compiler development: