abstract class ScalaPrimitives extends AnyRef
Scala primitive operations are represented as methods in Any
and
AnyVal
subclasses. Here we demultiplex them by providing a mapping
from their symbols to integers. Different methods exist for
different value types, but with the same meaning (like plus, minus,
etc.). They will all be mapped to the same int.
Note: The three equal methods have the following semantics:
"=="
checks fornull
, and if non-null, callsjava.lang.Object.equals
(class: Any; modifier: final)
. Primitive:EQ
"eq"
usual reference comparison(class: AnyRef; modifier: final)
. Primitive:ID
"equals"
user-defined equality (Java semantics)(class: Object; modifier: none)
. Primitive:EQUALS
Inspired from the scalac
compiler.
- Source
- ScalaPrimitives.scala
- Alphabetic
- By Inheritance
- ScalaPrimitives
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
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- Public
- All
Instance Constructors
- new ScalaPrimitives()
Concrete 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
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to any2stringadd[ScalaPrimitives] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (ScalaPrimitives, B)
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to ArrowAssoc[ScalaPrimitives] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
-
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
- final val ADD: Int(10)
- final val AND: Int(22)
- final val APPLY: Int(71)
- final val AS: Int(81)
- final val ASR: Int(32)
- final val B2B: Int(200)
- final val B2C: Int(202)
- final val B2D: Int(206)
- final val B2F: Int(205)
- final val B2I: Int(203)
- final val B2L: Int(204)
- final val B2S: Int(201)
- final val BARRAY_GET: Int(141)
- final val BARRAY_LENGTH: Int(132)
- final val BARRAY_SET: Int(151)
- final val BOX: Int(110)
- final val C2B: Int(220)
- final val C2C: Int(222)
- final val C2D: Int(226)
- final val C2F: Int(225)
- final val C2I: Int(223)
- final val C2L: Int(224)
- final val C2S: Int(221)
- final val CARRAY_GET: Int(143)
- final val CARRAY_LENGTH: Int(134)
- final val CARRAY_SET: Int(153)
- final val COERCE: Int(101)
- final val CONCAT: Int(100)
- final val D2B: Int(260)
- final val D2C: Int(262)
- final val D2D: Int(266)
- final val D2F: Int(265)
- final val D2I: Int(263)
- final val D2L: Int(264)
- final val D2S: Int(261)
- final val DARRAY_GET: Int(147)
- final val DARRAY_LENGTH: Int(138)
- final val DARRAY_SET: Int(157)
- final val DIV: Int(13)
- final val EQ: Int(42)
- final val F2B: Int(250)
- final val F2C: Int(252)
- final val F2D: Int(256)
- final val F2F: Int(255)
- final val F2I: Int(253)
- final val F2L: Int(254)
- final val F2S: Int(251)
- final val FARRAY_GET: Int(146)
- final val FARRAY_LENGTH: Int(137)
- final val FARRAY_SET: Int(156)
- final val GE: Int(46)
- final val GT: Int(47)
- final val HASH: Int(87)
- final val I2B: Int(230)
- final val I2C: Int(232)
- final val I2D: Int(236)
- final val I2F: Int(235)
- final val I2I: Int(233)
- final val I2L: Int(234)
- final val I2S: Int(231)
- final val IARRAY_GET: Int(144)
- final val IARRAY_LENGTH: Int(135)
- final val IARRAY_SET: Int(154)
- final val ID: Int(40)
- final val IS: Int(80)
- final val L2B: Int(240)
- final val L2C: Int(242)
- final val L2D: Int(246)
- final val L2F: Int(245)
- final val L2I: Int(243)
- final val L2L: Int(244)
- final val L2S: Int(241)
- final val LARRAY_GET: Int(145)
- final val LARRAY_LENGTH: Int(136)
- final val LARRAY_SET: Int(155)
- final val LE: Int(45)
- final val LENGTH: Int(70)
- final val LSL: Int(30)
- final val LSR: Int(31)
- final val LT: Int(44)
- final val MOD: Int(14)
- final val MUL: Int(12)
- final val NE: Int(43)
- final val NEG: Int(2)
- final val NEW_BARRAY: Int(113)
- final val NEW_CARRAY: Int(115)
- final val NEW_DARRAY: Int(119)
- final val NEW_FARRAY: Int(118)
- final val NEW_IARRAY: Int(116)
- final val NEW_LARRAY: Int(117)
- final val NEW_OARRAY: Int(120)
- final val NEW_SARRAY: Int(114)
- final val NEW_ZARRAY: Int(112)
- final val NI: Int(41)
- final val NOT: Int(3)
- final val OARRAY_GET: Int(148)
- final val OARRAY_LENGTH: Int(139)
- final val OARRAY_SET: Int(158)
- final val OR: Int(20)
- final val POS: Int(1)
- final val S2B: Int(210)
- final val S2C: Int(212)
- final val S2D: Int(216)
- final val S2F: Int(215)
- final val S2I: Int(213)
- final val S2L: Int(214)
- final val S2S: Int(211)
- final val SARRAY_GET: Int(142)
- final val SARRAY_LENGTH: Int(133)
- final val SARRAY_SET: Int(152)
- final val SUB: Int(11)
- final val SYNCHRONIZED: Int(90)
- final val UNBOX: Int(111)
- final val UPDATE: Int(72)
- final val XOR: Int(21)
- final val ZAND: Int(61)
- final val ZARRAY_GET: Int(140)
- final val ZARRAY_LENGTH: Int(131)
- final val ZARRAY_SET: Int(150)
- final val ZNOT: Int(50)
- final val ZOR: Int(60)
-
def
addPrimitive(s: Global.Symbol, code: Int): Unit
Add a primitive operation to the map
- def addPrimitives(cls: Global.Symbol, method: Global.Name, code: Int): Unit
-
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
-
def
ensuring(cond: (ScalaPrimitives) ⇒ Boolean, msg: ⇒ Any): ScalaPrimitives
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (ScalaPrimitives) ⇒ Boolean): ScalaPrimitives
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): ScalaPrimitives
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): ScalaPrimitives
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
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
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to StringFormat[ScalaPrimitives] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
-
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
getPrimitive(fun: Global.Symbol, tpe: Global.Type): Int
Return the primitive code of the given operation.
Return the primitive code of the given operation. If the operation is an array get/set, we inspect the type of the receiver to demux the operation.
- fun
The method symbol
- tpe
The type of the receiver object. It is used only for array operations
-
def
getPrimitive(sym: Global.Symbol): Int
Return the code for the given symbol.
-
def
hashCode(): Int
The hashCode method for reference types.
-
def
init(): Unit
Initialize the primitive map
- def isArithmeticOp(code: Int): Boolean
- def isArrayGet(code: Int): Boolean
- def isArrayLength(code: Int): Boolean
- def isArrayNew(code: Int): Boolean
-
def
isArrayOp(code: Int): Boolean
Check whether the given operation code is an array operation.
- def isArraySet(code: Int): Boolean
- def isBitwiseOp(code: Int): Boolean
- def isCoercion(code: Int): Boolean
-
def
isComparisonOp(code: Int): Boolean
Check whether the given code is a comparison operator
-
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
- def isLogicalOp(code: Int): Boolean
- def isPrimitive(sym: Global.Symbol): Boolean
- def isReferenceEqualityOp(code: Int): Boolean
- def isShiftOp(code: Int): Boolean
- def isUniversalEqualityOp(code: Int): Boolean
-
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( ... )
-
def
→[B](y: B): (ScalaPrimitives, B)
- Implicit
- This member is added by an implicit conversion from ScalaPrimitives to ArrowAssoc[ScalaPrimitives] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
The Scala compiler API.
The following resources are useful for Scala plugin/compiler development: