scala.tools.nsc.backend

# ScalaPrimitives

###
Related Doc: package backend

#### 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 for `null`, and if non-null, calls `java.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

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AnyRef, Any
Known Subclasses
scalaPrimitives
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Inherited

1. ScalaPrimitives
2. AnyRef
3. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

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Visibility

1. Public
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### Instance Constructors

1. #### new ScalaPrimitives()

### Abstract Value Members

1. #### abstract val global: Global

### Concrete Value Members

1. #### 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

2. #### final def ##(): Int

   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`.

   returns

     a hash value consistent with ==

   Definition Classes
     AnyRef → Any

3. #### def +(other: String): String

   Implicit information
     This member is added by an implicit conversion from ScalaPrimitives to any2stringadd[ScalaPrimitives] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

4. #### def ->[B](y: B): (ScalaPrimitives, B)

   Implicit information
     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()

5. #### final def ==(arg0: Any): Boolean

   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)`.

   arg0

     the object to compare against this object for equality.

   returns

     `true` if the receiver object is equivalent to the argument; `false` otherwise.

   Definition Classes
     AnyRef → Any

6. #### final val ADD: Int(10)

7. #### final val AND: Int(22)

8. #### final val APPLY: Int(71)

9. #### final val AS: Int(81)

10. #### final val ASR: Int(32)

11. #### final val B2B: Int(200)

12. #### final val B2C: Int(202)

13. #### final val B2D: Int(206)

14. #### final val B2F: Int(205)

15. #### final val B2I: Int(203)

16. #### final val B2L: Int(204)

17. #### final val B2S: Int(201)

18. #### final val BARRAY_GET: Int(141)

19. #### final val BARRAY_LENGTH: Int(132)

20. #### final val BARRAY_SET: Int(151)

21. #### final val BOX: Int(110)

22. #### final val C2B: Int(220)

23. #### final val C2C: Int(222)

24. #### final val C2D: Int(226)

25. #### final val C2F: Int(225)

26. #### final val C2I: Int(223)

27. #### final val C2L: Int(224)

28. #### final val C2S: Int(221)

29. #### final val CARRAY_GET: Int(143)

30. #### final val CARRAY_LENGTH: Int(134)

31. #### final val CARRAY_SET: Int(153)

32. #### final val COERCE: Int(101)

33. #### final val CONCAT: Int(100)

34. #### final val D2B: Int(260)

35. #### final val D2C: Int(262)

36. #### final val D2D: Int(266)

37. #### final val D2F: Int(265)

38. #### final val D2I: Int(263)

39. #### final val D2L: Int(264)

40. #### final val D2S: Int(261)

41. #### final val DARRAY_GET: Int(147)

42. #### final val DARRAY_LENGTH: Int(138)

43. #### final val DARRAY_SET: Int(157)

44. #### final val DIV: Int(13)

45. #### final val EQ: Int(42)

46. #### final val F2B: Int(250)

47. #### final val F2C: Int(252)

48. #### final val F2D: Int(256)

49. #### final val F2F: Int(255)

50. #### final val F2I: Int(253)

51. #### final val F2L: Int(254)

52. #### final val F2S: Int(251)

53. #### final val FARRAY_GET: Int(146)

54. #### final val FARRAY_LENGTH: Int(137)

55. #### final val FARRAY_SET: Int(156)

56. #### final val GE: Int(46)

57. #### final val GT: Int(47)

58. #### final val HASH: Int(87)

59. #### final val I2B: Int(230)

60. #### final val I2C: Int(232)

61. #### final val I2D: Int(236)

62. #### final val I2F: Int(235)

63. #### final val I2I: Int(233)

64. #### final val I2L: Int(234)

65. #### final val I2S: Int(231)

66. #### final val IARRAY_GET: Int(144)

67. #### final val IARRAY_LENGTH: Int(135)

68. #### final val IARRAY_SET: Int(154)

69. #### final val ID: Int(40)

70. #### final val IS: Int(80)

71. #### final val L2B: Int(240)

72. #### final val L2C: Int(242)

73. #### final val L2D: Int(246)

74. #### final val L2F: Int(245)

75. #### final val L2I: Int(243)

76. #### final val L2L: Int(244)

77. #### final val L2S: Int(241)

78. #### final val LARRAY_GET: Int(145)

79. #### final val LARRAY_LENGTH: Int(136)

80. #### final val LARRAY_SET: Int(155)

81. #### final val LE: Int(45)

82. #### final val LENGTH: Int(70)

83. #### final val LSL: Int(30)

84. #### final val LSR: Int(31)

85. #### final val LT: Int(44)

86. #### final val MOD: Int(14)

87. #### final val MUL: Int(12)

88. #### final val NE: Int(43)

89. #### final val NEG: Int(2)

90. #### final val NEW_BARRAY: Int(113)

91. #### final val NEW_CARRAY: Int(115)

92. #### final val NEW_DARRAY: Int(119)

93. #### final val NEW_FARRAY: Int(118)

94. #### final val NEW_IARRAY: Int(116)

95. #### final val NEW_LARRAY: Int(117)

96. #### final val NEW_OARRAY: Int(120)

97. #### final val NEW_SARRAY: Int(114)

98. #### final val NEW_ZARRAY: Int(112)

99. #### final val NI: Int(41)

100. #### final val NOT: Int(3)

101. #### final val OARRAY_GET: Int(148)

102. #### final val OARRAY_LENGTH: Int(139)

103. #### final val OARRAY_SET: Int(158)

104. #### final val OR: Int(20)

105. #### final val POS: Int(1)

106. #### final val S2B: Int(210)

107. #### final val S2C: Int(212)

108. #### final val S2D: Int(216)

109. #### final val S2F: Int(215)

110. #### final val S2I: Int(213)

111. #### final val S2L: Int(214)

112. #### final val S2S: Int(211)

113. #### final val SARRAY_GET: Int(142)

114. #### final val SARRAY_LENGTH: Int(133)

115. #### final val SARRAY_SET: Int(152)

116. #### final val SUB: Int(11)

117. #### final val SYNCHRONIZED: Int(90)

118. #### final val UNBOX: Int(111)

119. #### final val UPDATE: Int(72)

120. #### final val XOR: Int(21)

121. #### final val ZAND: Int(61)

122. #### final val ZARRAY_GET: Int(140)

123. #### final val ZARRAY_LENGTH: Int(131)

124. #### final val ZARRAY_SET: Int(150)

125. #### final val ZNOT: Int(50)

126. #### final val ZOR: Int(60)

127. #### def addPrimitive(s: Global.Symbol, code: Int): Unit

     Add a primitive operation to the map

128. #### def addPrimitives(cls: Global.Symbol, method: Global.Name, code: Int): Unit

129. #### 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 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.

     returns

       the receiver object.

     Definition Classes
       Any
     Exceptions thrown

       `ClassCastException` if the receiver object is not an instance of the erasure of type `T0`.

130. #### 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

131. #### def ensuring(cond: (ScalaPrimitives) ⇒ Boolean, msg: ⇒ Any): ScalaPrimitives

     Implicit information
       This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
     Definition Classes
       Ensuring

132. #### def ensuring(cond: (ScalaPrimitives) ⇒ Boolean): ScalaPrimitives

     Implicit information
       This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
     Definition Classes
       Ensuring

133. #### def ensuring(cond: Boolean, msg: ⇒ Any): ScalaPrimitives

     Implicit information
       This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
     Definition Classes
       Ensuring

134. #### def ensuring(cond: Boolean): ScalaPrimitives

     Implicit information
       This member is added by an implicit conversion from ScalaPrimitives to Ensuring[ScalaPrimitives] performed by method Ensuring in scala.Predef.
     Definition Classes
       Ensuring

135. #### final def eq(arg0: AnyRef): Boolean

     Tests whether the argument (`arg0`) is a reference to the receiver object (`this`).

     Tests whether the argument (`arg0`) 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:

     - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
     - For any non-null instance `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`).

     returns

       `true` if the argument is a reference to the receiver object; `false` otherwise.

     Definition Classes
       AnyRef

136. #### def equals(arg0: Any): Boolean

     The equality method for reference types.

     The equality method for reference types. Default implementation delegates to `eq`.

     See also `equals` in scala.Any.

     returns

       `true` if the receiver object is equivalent to the argument; `false` otherwise.

     Definition Classes
       AnyRef → Any

137. #### 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 between `finalize` 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

138. #### def formatted(fmtstr: String): String

     Implicit information
       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()

139. #### def generatedKind(code: Int): Global.icodes.TypeKind

     If code is a coercion primitive, the result type

140. #### final def getClass(): Class[_]

     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.

     returns

       a representation that corresponds to the dynamic class of the receiver object.

     Definition Classes
       AnyRef → Any
     Note

       not specified by SLS as a member of AnyRef

141. #### 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

142. #### def getPrimitive(sym: Global.Symbol): Int

     Return the code for the given symbol.

143. #### def hashCode(): Int

     The hashCode method for reference types.

     The hashCode method for reference types. See hashCode in scala.Any.

     returns

       the hash code value for this object.

     Definition Classes
       AnyRef → Any

144. #### def init(): Unit

     Initialize the primitive map

145. #### def isArithmeticOp(code: Int): Boolean

146. #### def isArrayGet(code: Int): Boolean

147. #### def isArrayLength(code: Int): Boolean

148. #### def isArrayNew(code: Int): Boolean

149. #### def isArrayOp(code: Int): Boolean

     Check whether the given operation code is an array operation.

150. #### def isArraySet(code: Int): Boolean

151. #### def isBitwiseOp(code: Int): Boolean

152. #### def isCoercion(code: Int): Boolean

153. #### def isComparisonOp(code: Int): Boolean

     Check whether the given code is a comparison operator

154. #### 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 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.

     returns

       `true` if the receiver object is an instance of erasure of type `T0`; `false` otherwise.

     Definition Classes
       Any

155. #### def isLogicalOp(code: Int): Boolean

156. #### def isPrimitive(sym: Global.Symbol): Boolean

157. #### def isReferenceEqualityOp(code: Int): Boolean

158. #### def isShiftOp(code: Int): Boolean

159. #### def isUniversalEqualityOp(code: Int): Boolean

160. #### 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

161. #### 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

162. #### 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

163. #### final def synchronized[T0](arg0: ⇒ T0): T0

     Definition Classes
       AnyRef

164. #### 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

165. #### final val typeOfArrayOp: Map[Int, Global.icodes.TypeKind]

166. #### final def wait(): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

167. #### final def wait(arg0: Long, arg1: Int): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

168. #### final def wait(arg0: Long): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

169. #### def →[B](y: B): (ScalaPrimitives, B)

     Implicit information
       This member is added by an implicit conversion from ScalaPrimitives to ArrowAssoc[ScalaPrimitives] performed by method ArrowAssoc in scala.Predef.
     Definition Classes
       ArrowAssoc

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from ScalaPrimitives to any2stringadd[ScalaPrimitives]

### Inherited by implicit conversion StringFormat from ScalaPrimitives to StringFormat[ScalaPrimitives]

### Inherited by implicit conversion Ensuring from ScalaPrimitives to Ensuring[ScalaPrimitives]

### Inherited by implicit conversion ArrowAssoc from ScalaPrimitives to ArrowAssoc[ScalaPrimitives]

### Ungrouped