Packages

abstract class VirtualMethodInvocationInstruction extends MethodInvocationInstruction

Common superclass of all Invoke instructions that require virtual method resolution.

Source
VirtualMethodInvocationInstruction.scala
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. VirtualMethodInvocationInstruction
  2. MethodInvocationInstruction
  3. InvocationInstruction
  4. NoLabels
  5. LabeledInstruction
  6. ConstantLengthInstruction
  7. ConstantLengthInstructionLike
  8. Instruction
  9. InstructionLike
  10. AnyRef
  11. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new VirtualMethodInvocationInstruction()

Abstract Value Members

  1. abstract def declaringClass: ReferenceType
    Definition Classes
    MethodInvocationInstruction
  2. abstract def isInstanceMethod: Boolean

    Returns true if this method takes an implicit parameter "this".

    Returns true if this method takes an implicit parameter "this".

    Definition Classes
    InvocationInstruction
  3. abstract def isInterfaceCall: Boolean
    Definition Classes
    MethodInvocationInstruction
  4. abstract def jvmExceptions: List[ObjectType]

    The exceptions that may be thrown by the JVM at runtime if the execution of this instruction fails.

    The exceptions that may be thrown by the JVM at runtime if the execution of this instruction fails. I.e., these are neither exceptions that are explicitly created and then thrown by user code nor errors that may arise due to an invalid code base (in particular LinkageErrors). However, OutOfMemoryErrors are possible.

    Definition Classes
    InstructionLike
    Note

    The returned types always precisely describe the thrown exception; they are not upper bounds. All instructions – except of the InvocationInstructions and the ATHROW$ instruction – will always either succeed, throw a linkage time related exception or throw one of the specified exceptions.

  5. abstract def length: Int

    The number of bytes (in the Code array) used by the instruction.

    The number of bytes (in the Code array) used by the instruction.

    Definition Classes
    ConstantLengthInstructionLike
  6. abstract def methodDescriptor: MethodDescriptor

    The method descriptor of the called method.

    The method descriptor of the called method.

    Definition Classes
    InvocationInstruction
    Note

    This information is – in case of INCOMPLETE_INVOKEDYNAMIC instructions – only available after loading the entire class file.

  7. abstract def mnemonic: String

    The mnemonic of the instruction as defined by the JVM specification.

    The mnemonic of the instruction as defined by the JVM specification.

    Definition Classes
    InstructionLike
  8. abstract def name: String

    The simple name of the called method.

    The simple name of the called method.

    Definition Classes
    InvocationInstruction
    Note

    This information is – in case of INCOMPLETE_INVOKEDYNAMIC instructions – only available after loading the entire class file.

  9. abstract def opcode: Int

    The opcode of the instruction as defined by the JVM specification.

    The opcode of the instruction as defined by the JVM specification. The opcode is a value in the range [0..255].

    Definition Classes
    InstructionLike

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def asATHROW: ATHROW.type
    Definition Classes
    Instruction
  5. def asArithmeticInstruction: ArithmeticInstruction
    Definition Classes
    Instruction
  6. def asCompoundConditionalBranchInstruction: CompoundConditionalBranchInstruction
    Definition Classes
    Instruction
  7. def asControlTransferInstruction: ControlTransferInstruction
    Definition Classes
    Instruction
  8. def asCreateNewArrayInstruction: CreateNewArrayInstruction
    Definition Classes
    Instruction
  9. def asGotoInstruction: GotoInstruction
    Definition Classes
    Instruction
  10. def asIF0Instruction: IF0Instruction[_]
    Definition Classes
    Instruction
  11. def asIFACMPInstruction: IFACMPInstruction[_]
    Definition Classes
    Instruction
  12. def asIFICMPInstruction: IFICMPInstruction[_]
    Definition Classes
    Instruction
  13. def asIFXNullInstruction: IFXNullInstruction[_]
    Definition Classes
    Instruction
  14. def asIINC: IINC
    Definition Classes
    Instruction
  15. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  16. final def asInvocationInstruction: VirtualMethodInvocationInstruction.this.type
    Definition Classes
    InvocationInstructionInstruction
  17. def asLOOKUPSWITCH: LOOKUPSWITCH
    Definition Classes
    Instruction
  18. def asLoadLocalVariableInstruction: LoadLocalVariableInstruction
    Definition Classes
    Instruction
  19. final def asMethodInvocationInstruction: MethodInvocationInstruction
  20. def asNEW: NEW
    Definition Classes
    Instruction
  21. def asReturnInstruction: ReturnInstruction
    Definition Classes
    Instruction
  22. def asShortBranchoffset(branchoffset: Int): Int

    Validates the branchoffset and returns it or throws an exception!

    Validates the branchoffset and returns it or throws an exception!

    Attributes
    protected
    Definition Classes
    LabeledInstruction
    Annotations
    @throws("if the branchoffset is invalid")
  23. def asSimpleBranchInstruction: SimpleBranchInstruction
    Definition Classes
    Instruction
  24. def asSimpleConditionalBranchInstruction: SimpleConditionalBranchInstruction[_]
    Definition Classes
    Instruction
  25. def asStoreLocalVariableInstruction: StoreLocalVariableInstruction
    Definition Classes
    Instruction
  26. def asTABLESWITCH: TABLESWITCH
    Definition Classes
    Instruction
  27. def asVirtualMethod: VirtualMethod
    Definition Classes
    MethodInvocationInstruction
  28. final def branchTargets: Iterator[InstructionLabel]
    Definition Classes
    NoLabels → LabeledInstruction
  29. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @IntrinsicCandidate()
  30. def count: Int

    Returns the number of registers required to store the method's arguments including (if required) the self reference "this".

    Returns the number of registers required to store the method's arguments including (if required) the self reference "this".

    Definition Classes
    MethodInvocationInstruction
  31. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  32. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  33. final def expressionResult: ExpressionResultLocation

    Returns the location – Stack, Register or NoExpression – where the value computed by this instruction is stored.

    Returns the location – Stack, Register or NoExpression – where the value computed by this instruction is stored. In this case an instruction is only considered to be an expression if it puts a value on the stack or in a register that is the result of some kind of computation; i.e., just copying, duplicating or moving a value between the stack and the registers is not considered to be an expression.

    Definition Classes
    InvocationInstructionInstructionLike
    Note

    The CHECKCAST instruction is special in the sense that it just inspects the top-most value.

  34. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  35. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  36. final def indexOfNextInstruction(currentPC: PC)(implicit code: Code): Int

    The index of the next instruction in the (sparse) code array.

    The index of the next instruction in the (sparse) code array.

    Definition Classes
    ConstantLengthInstructionInstruction
    Note

    This is primarily a convenience method that delegates to the method indexOfNextInstrution(PC,Boolean). However, given that this is also the standard method called by clients, it is often meaningful to directly implement this. In particular since most instructions cannot be modified by wide.

  37. final def indexOfNextInstruction(currentPC: PC, modifiedByWide: Boolean): Int

    The index of the next instruction in the code array.

    The index of the next instruction in the code array.

    Definition Classes
    ConstantLengthInstructionLikeInstructionLike
  38. final def indexOfReadLocal: Int

    The index of the local (variable)/register that is read is returned.

    The index of the local (variable)/register that is read is returned. This method is only defined if readsLocal returns true.

    Definition Classes
    InvocationInstructionInstructionLike
  39. final def indexOfWrittenLocal: Int

    The index of the local (variable)/register that is written.

    The index of the local (variable)/register that is written. This method is only defined if writesLocal returns true.

    Definition Classes
    InvocationInstructionInstructionLike
  40. def isAthrow: Boolean
    Definition Classes
    InstructionLike
  41. def isCheckcast: Boolean
    Definition Classes
    Instruction
  42. def isCompoundConditionalBranchInstruction: Boolean
    Definition Classes
    Instruction
  43. def isControlTransferInstruction: Boolean
    Definition Classes
    InstructionLike
  44. def isGotoInstruction: Boolean
    Definition Classes
    Instruction
  45. def isIINC: Boolean
    Definition Classes
    Instruction
  46. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  47. final def isInvocationInstruction: Boolean
    Definition Classes
    InvocationInstructionInstruction
  48. def isInvokeStatic: Boolean
    Definition Classes
    Instruction
  49. final def isIsomorphic(thisPC: PC, otherPC: PC)(implicit code: Code): Boolean

    Determines if this instruction is isomorphic to the given instruction.

    Determines if this instruction is isomorphic to the given instruction.

    Two instructions are isomporphic if they access the same operand and register values and if the instructions have the same bytecode representation, except of (A) (potential) padding bytes and (B) the branch offset of JSR(_W) instructions. In the first case the branch offsets are corrected by the number of padding bytes and in the second case the absolute addresses are compared (i.e., whether both instructions call the same subroutine).

    For example, an aload_0 instruction is only isomorphic to another aload_0 instruction and is not isomorphic to an aload(0) instruction – though the runtime effect is the same. However, a LOOKUPSWITCH (TABLESWITCH) instruction is considered isomorphic to another respective instruction if the only difference is the number of padding bytes. Furthermore, two JSR(_W) instructions are isomorphic if and only if they jump to the same subroutine.

    Definition Classes
    InvocationInstructionInstructionLike
    Note

    The number of padding bytes is generally calculated by (otherPC % 4) - (thisPC %4) (=== "padding other" - "padding this") and should be added to the branch offsets of this (XYZ)switch instruction when the branch targets are compared to the other instructions branchoffsets.

    // "padding b" - "padding a"
    // === (3 - (bPC % 4)) - (3 - (aPC % 4))
    // === (aPC % 4) - (bPC %4)
    ,

    this.isIsomorphic(thisPC,thisPC) is always true

  50. def isLoadConstantInstruction: Boolean
    Definition Classes
    InstructionLike
  51. def isLoadLocalVariableInstruction: Boolean
    Definition Classes
    Instruction
  52. final def isMethodInvocationInstruction: Boolean
  53. def isMonitorInstruction: Boolean
    Definition Classes
    InstructionLike
  54. def isRET: Boolean
    Definition Classes
    InstructionLike
  55. def isReturnInstruction: Boolean
    Definition Classes
    InstructionLike
  56. def isSimpleBranchInstruction: Boolean
    Definition Classes
    Instruction
  57. def isSimpleConditionalBranchInstruction: Boolean
    Definition Classes
    Instruction
  58. def isStackManagementInstruction: Boolean
    Definition Classes
    Instruction
  59. def isStoreLocalVariableInstruction: Boolean
    Definition Classes
    Instruction
  60. def isVirtualMethodCall: Boolean

    Returns true if the called method is an instance method and virtual method call resolution has to take place.

    Returns true if the called method is an instance method and virtual method call resolution has to take place. I.e., if the underlying instruction is an invokevirtual or an invokeinterface instruction.

    Definition Classes
    VirtualMethodInvocationInstructionMethodInvocationInstruction
  61. final def mayThrowExceptions: Boolean

    Returns true if the evaluation of the instruction may lead to some runtime exception.

    Returns true if the evaluation of the instruction may lead to some runtime exception. For example, in case of INVOKESTATIC jvmExceptions will return an empty list. However, in general the called method may throw an arbitrary exception.

    Errors (such as LinkageError) related to invalid projects are not considered.

    Definition Classes
    InvocationInstructionInstructionLike
  62. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  63. final def nextInstructions(currentPC: PC, regularSuccessorsOnly: Boolean)(implicit code: Code, classHierarchy: ClassHierarchy = ClassHierarchy.PreInitializedClassHierarchy): List[PC]

    Given that we have – without any sophisticated analysis – no idea which exceptions may be thrown by the called method, we make the safe assumption that any handler is a potential successor!

    Given that we have – without any sophisticated analysis – no idea which exceptions may be thrown by the called method, we make the safe assumption that any handler is a potential successor!

    The result may contain duplicates iff multiple different exceptions are handled by the same handler. E.g., as generated in case of "Java's multicatch instruction":

    try {} catch(IOException | NullPointerException ex) {...}
    regularSuccessorsOnly

    If true, only those instructions are returned which are not related to an exception thrown by this instruction.

    returns

    The absolute addresses of all instructions that may be executed next at runtime.

    Definition Classes
    InvocationInstructionInstruction
  64. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  65. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  66. final def numberOfPoppedOperands(ctg: (Int) => ComputationalTypeCategory): Int

    The number of values that are popped from the operand stack.

    The number of values that are popped from the operand stack. Here, long and double values are also counted as one value though they use two stack slots. E.g., IADD (integer add) and LADD (long add) both pop two values and push one value.

    ctg

    A function that returns the computational type category of the value on the operand stack with a given value index. E.g., The top value on the operand stack has index '0' and may occupy one (for category 1 values) or two stack slots (for category 2 values.)

    Definition Classes
    VirtualMethodInvocationInstructionInstructionLike
    Note

    In case of some of the StackManagementInstruction the number of popped values is not fixed. In that case the number depends on the concrete layout of the operand stack. E.g., the POP2 instruction may just pop one categeory 2 value (of type long or double) or two category 1 values.

  67. final def numberOfPushedOperands(ctg: (Int) => ComputationalTypeCategory): Int

    The number of values that are put onto the operand stack.

    The number of values that are put onto the operand stack. Here, long and double values are also counted as one value though they use two stack slots. E.g., IADD (integer add) and LADD (long add) both pop two values and push one value.

    ctg

    A function that returns the computational type category of the value on the operand stack with a given value index. The top value on the operand stack has index '0' and may occupy one (for category 1 values) or two stack slots (for category 2 values.)

    Definition Classes
    InvocationInstructionInstructionLike
    Note

    In case of some of the StackManagementInstruction this number is not fixed. In that case the number depends on the concrete layout of the operand stack. E.g., the DUP2 instruction may just duplicate one categeory 2 value (result is 1) (of type long or double) or two category 1 values (result is 2).

  68. final def readsLocal: Boolean

    Returns true if this instruction reads/uses a local variable.

    Returns true if this instruction reads/uses a local variable.

    Definition Classes
    InvocationInstructionInstructionLike
  69. final def resolveJumpTargets(pc: PC, pcs: Map[InstructionLabel, PC]): VirtualMethodInvocationInstruction.this.type

    If this instruction uses Symbols to mark jump targets then the targets are replaced by the branchoffsets and an Instruction is returned.

    If this instruction uses Symbols to mark jump targets then the targets are replaced by the branchoffsets and an Instruction is returned. If this instruction already has concrete branchoffsets nothing special will happen.

    If this instruction already has concrete jump targets nothing special will happen.

    pc

    The final pc of this instruction in the code array.

    pcs

    The map which maps all symbols to their final pcs.

    Definition Classes
    NoLabels → LabeledInstruction
  70. def similar(other: Instruction): Boolean

    Checks for structural equality of two instructions.

    Checks for structural equality of two instructions.

    Definition Classes
    Instruction
    Note

    Implemted by using the underlying (compiler generated) equals methods.

  71. final def stackSlotsChange: Int

    The number of stack slots pushed or popped by this instruction.

    The number of stack slots pushed or popped by this instruction.

    Definition Classes
    InvocationInstructionInstructionLike
    Note

    Overall, each DUP instruction always pushes the same number of stack slots. Only the number of values that are processed may depend on the stack layout.

  72. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  73. final def toLabeledInstruction(currentPC: PC): LabeledInstruction
    Definition Classes
    NoLabels
  74. def toString(): String
    Definition Classes
    MethodInvocationInstruction → AnyRef → Any
  75. final def toString(currentPC: Int): String

    Returns a string representation of this instruction.

    Returns a string representation of this instruction. If this instruction is a (conditional) jump instruction, then the PCs of the target instructions are given absolute address.

    currentPC

    The program counter of this instruction. Used to resolve relative jump targets.

    Definition Classes
    InvocationInstructionInstructionLike
  76. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  77. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  78. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  79. final def writesLocal: Boolean

    Returns true if this instruction writes/updates a local variable.

    Returns true if this instruction writes/updates a local variable.

    Definition Classes
    InvocationInstructionInstructionLike

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

Inherited from InvocationInstruction

Inherited from NoLabels

Inherited from LabeledInstruction

Inherited from Instruction

Inherited from InstructionLike

Inherited from AnyRef

Inherited from Any

Ungrouped