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scala.tools.nsc.backend.jvm.opt

BytecodeUtils

object BytecodeUtils

Source
BytecodeUtils.scala
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Type Members

  1. implicit final class AnalyzerExtensions [V <: Value] extends AnyVal
  2. implicit final class FrameExtensions [V <: Value] extends AnyVal

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. 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).

    returns

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

    Definition Classes
    AnyRef → Any
  4. 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.

  5. 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

  6. def cloneLabels(methodNode: MethodNode): Map[LabelNode, LabelNode]
  7. def cloneLocalVariableNodes(methodNode: MethodNode, labelMap: Map[LabelNode, LabelNode], prefix: String, shift: Int): List[LocalVariableNode]

    Clone the local variable descriptors of methodNode and map their start and end labels according to the labelMap.

  8. def cloneTryCatchBlockNodes(methodNode: MethodNode, labelMap: Map[LabelNode, LabelNode]): List[TryCatchBlockNode]

    Clone the local try/catch blocks of methodNode and map their start and end and handler labels according to the labelMap.

  9. def codeSizeOKForInlining(caller: MethodNode, callee: MethodNode): Boolean
  10. 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 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
  11. 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
  12. def finalJumpTarget(source: JumpInsnNode): LabelNode
  13. 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

  14. def fixLoadedNothingOrNullValue(loadedType: Type, loadInstr: AbstractInsnNode, methodNode: MethodNode, bTypes: BTypes): Unit

    This method is used by optimizer components to eliminate phantom values of instruction that load a value of type Nothing$ or Null$.

    This method is used by optimizer components to eliminate phantom values of instruction that load a value of type Nothing$ or Null$. Such values on the stack don't interact well with stack map frames.

    For example, opt.getOrElse(throw e) is re-written to an invocation of the lambda body, a method with return type Nothing$. Similarly for opt.getOrElse(null) and Null$.

    During bytecode generation this is handled by BCodeBodyBuilder.adapt. See the comment in that method which explains the issue with such phantom values.

  15. 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
  16. def getPop(size: Int): InsnNode
  17. def hasCallerSensitiveAnnotation(methodNode: MethodNode): Boolean
  18. 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
  19. def instructionResultSize(insn: AbstractInsnNode): Int
  20. def isAbstractMethod(methodNode: MethodNode): Boolean
  21. def isConditionalJump(instruction: AbstractInsnNode): Boolean
  22. def isConstructor(methodNode: MethodNode): Boolean
  23. def isExecutable(instruction: AbstractInsnNode): Boolean
  24. def isFinalClass(classNode: ClassNode): Boolean
  25. def isFinalMethod(methodNode: MethodNode): Boolean
  26. 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
  27. def isJumpNonJsr(instruction: AbstractInsnNode): Boolean
  28. def isLoad(instruction: AbstractInsnNode): Boolean
  29. def isLoadOrStore(instruction: AbstractInsnNode): Boolean
  30. def isLoadStoreOrRet(instruction: AbstractInsnNode): Boolean
  31. def isNativeMethod(methodNode: MethodNode): Boolean
  32. def isNonVirtualCall(instruction: AbstractInsnNode): Boolean
  33. def isReference(t: Type): Boolean
  34. def isReturn(instruction: AbstractInsnNode): Boolean
  35. def isSize2LoadOrStore(opcode: Int): Boolean
  36. def isStaticMethod(methodNode: MethodNode): Boolean
  37. def isStore(instruction: AbstractInsnNode): Boolean
  38. def isStrictfpMethod(methodNode: MethodNode): Boolean
  39. def isSynchronizedMethod(methodNode: MethodNode): Boolean
  40. def labelReferences(method: MethodNode): Map[LabelNode, Set[AnyRef]]
  41. def loadZeroForTypeSort(sort: Int): InsnNode
  42. final val maxJVMMethodSize: Int(65535)
  43. final val maxMethodSizeAfterInline: Int
  44. 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
  45. def negateJumpOpcode(jumpOpcode: Int): Int
  46. def newLabelNode: LabelNode

    Create a new LabelNode with a correctly associated Label.

  47. def nextExecutableInstruction(insn: AbstractInsnNode, alsoKeep: (AbstractInsnNode) ⇒ Boolean = Set()): Option[AbstractInsnNode]
    Annotations
    @tailrec()
  48. def nextExecutableInstructionOrLabel(insn: AbstractInsnNode): Option[AbstractInsnNode]
    Annotations
    @tailrec()
  49. 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

  50. 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

  51. def parametersSize(methodNode: MethodNode): Int

    The number of local variable slots used for parameters and for the this reference.

  52. def removeJumpAndAdjustStack(method: MethodNode, jump: JumpInsnNode): Unit
  53. def removeLineNumberNodes(instructions: InsnList): Unit
  54. def removeLineNumberNodes(classNode: ClassNode): Unit
  55. def sameTargetExecutableInstruction(a: JumpInsnNode, b: JumpInsnNode): Boolean
  56. def substituteLabel(reference: AnyRef, from: LabelNode, to: LabelNode): Unit
  57. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  58. 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
  59. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  60. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  61. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  62. object ConditionalJump
  63. object Goto
  64. object JumpNonJsr
  65. object VarInstruction

Inherited from AnyRef

Inherited from Any

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