Scala Compiler2.12.3 < Back
 

# Packages

-  package root

  The Scala compiler and reflection APIs.

  The Scala compiler and reflection APIs.

  Definition Classes
    root
-  package scala
  Definition Classes
    root
-  package tools
  Definition Classes
    scala
-  package nsc
  Definition Classes
    tools
-  package backend
  Definition Classes
    nsc
-  package jvm
  Definition Classes
    backend
-  abstract class BTypes extends AnyRef

  The BTypes component defines The BType class hierarchy.

  The BTypes component defines The BType class hierarchy. A BType stores all type information that is required after building the ASM nodes. This includes optimizations, generation of InnerClass attributes and generation of stack map frames.

  The representation is immutable and independent of the compiler data structures, hence it can be queried by concurrent threads.

  Definition Classes
    jvm
- ArrayBType
- BOOL
- BType
- BYTE
- CHAR
- ClassBType
- ClassInfo
- DOUBLE
- FLOAT
- INT
- InnerClassEntry
- LONG
- Lazy
- MethodBType
- MethodNameAndType
- NestedInfo
- PrimitiveBType
- RefBType
- SHORT
- UNIT

t

scala.tools.nsc.backend.jvm.BTypes

# BType 

###

#### sealed trait BType extends AnyRef

A BType is either a primitive type, a ClassBType, an ArrayBType of one of these, or a MethodType referring to BTypes.

Source
  BTypes.scala

Linear Supertypes
AnyRef, Any
Known Subclasses
ArrayBType, BOOL, BYTE, CHAR, ClassBType, DOUBLE, FLOAT, INT, LONG, MethodBType, PrimitiveBType, RefBType, SHORT, UNIT
Type Hierarchy
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. BType
2. AnyRef
3. Any

Implicitly

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

1. Hide All
2. Show All

Visibility

1. Public
2. All

### Value Members

1.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
2.  final def ##(): Int
   Definition Classes
     AnyRef → Any
3.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from BType to any2stringadd[BType] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  def ->[B](y: B): (BType, B)
   Implicit
     This member is added by an implicit conversion from BType to ArrowAssoc[BType] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
5.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
6.  def asArrayBType: ArrayBType
7.  def asClassBType: ClassBType
8.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
9.  def asPrimitiveBType: PrimitiveBType
10.  def asRefBType: RefBType
11.  final def buildString(builder: java.lang.StringBuilder): Unit
12.  def clone(): AnyRef
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
13.  final def conformsTo(other: BType): Either[NoClassBTypeInfo, Boolean]
14.  final def descriptor: String

    returns

      The Java descriptor of this type. Examples:

      - int: I
      - java.lang.String: Ljava/lang/String;
      - int[]: [I
      - Object m(String s, double d): (Ljava/lang/String;D)Ljava/lang/Object;
15.  def ensuring(cond: (BType) ⇒ Boolean, msg: ⇒ Any): BType
    Implicit
      This member is added by an implicit conversion from BType to Ensuring[BType] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
16.  def ensuring(cond: (BType) ⇒ Boolean): BType
    Implicit
      This member is added by an implicit conversion from BType to Ensuring[BType] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
17.  def ensuring(cond: Boolean, msg: ⇒ Any): BType
    Implicit
      This member is added by an implicit conversion from BType to Ensuring[BType] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
18.  def ensuring(cond: Boolean): BType
    Implicit
      This member is added by an implicit conversion from BType to Ensuring[BType] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
19.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
20.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
21.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
22.  def formatted(fmtstr: String): String
    Implicit
      This member is added by an implicit conversion from BType to StringFormat[BType] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()
23.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
24.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
25.  final def isArray: Boolean
26.  final def isBoxed: Boolean
27.  final def isClass: Boolean
28.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
29.  final def isIntSizedType: Boolean
30.  final def isIntegralType: Boolean
31.  final def isMethod: Boolean
32.  final def isNonVoidPrimitiveType: Boolean
33.  final def isNothingType: Boolean
34.  final def isNullType: Boolean
35.  final def isNumericType: Boolean
36.  final def isPrimitive: Boolean
37.  final def isRealType: Boolean
38.  final def isRef: Boolean
39.  final def isWideType: Boolean
40.  final def maxType(other: BType): BType

    Compute the upper bound of two types.

    Compute the upper bound of two types. Takes promotions of numeric primitives into account.

41.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
42.  final def notify(): Unit
    Definition Classes
      AnyRef
43.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
44.  final def size: Int

    returns

      0 for void, 2 for long and double, 1 otherwise

45.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
46.  def toASMType: Type

    The asm.Type corresponding to this BType.

    The asm.Type corresponding to this BType.

    Note about asm.Type.getObjectType (*): For class types, the method expects the internal name, i.e. without the surrounding 'L' and ';'. For array types on the other hand, the method expects a full descriptor, for example "[Ljava/lang/String;".

    See method asm.Type.getType that creates a asm.Type from a type descriptor

    - for an OBJECT type, the 'L' and ';' are not part of the range of the created Type
    - for an ARRAY type, the full descriptor is part of the range
47.  final def toString(): String
    Definition Classes
      BType → AnyRef → Any
48.  final def typedOpcode(opcode: Int): Int

    Some JVM opcodes have typed variants.

    Some JVM opcodes have typed variants. This method returns the correct opcode according to the type.

    opcode

      A JVM instruction opcode. This opcode must be one of ILOAD, ISTORE, IALOAD, IASTORE, IADD, ISUB, IMUL, IDIV, IREM, INEG, ISHL, ISHR, IUSHR, IAND, IOR IXOR and IRETURN.

    returns

      The opcode adapted to this java type. For example, if this type is `float` and `opcode` is `IRETURN`, this method returns `FRETURN`.

49.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
50.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
51.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
52.  def →[B](y: B): (BType, B)
    Implicit
      This member is added by an implicit conversion from BType to ArrowAssoc[BType] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from AnyRef

### Inherited from Any

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

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

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

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

### Ungrouped