Class DismantleBytecode

java.lang.Object
edu.umd.cs.findbugs.visitclass.BetterVisitor
edu.umd.cs.findbugs.visitclass.PreorderVisitor
edu.umd.cs.findbugs.visitclass.AnnotationVisitor
edu.umd.cs.findbugs.visitclass.DismantleBytecode
All Implemented Interfaces:
org.apache.bcel.classfile.Visitor
Direct Known Subclasses:
BytecodeScanningDetector, CloneIdiom, NoteDirectlyRelevantTypeQualifiers
public abstract class DismantleBytecode extends AnnotationVisitor

  • Field Details

    • opcode

      private int opcode

    • opcodeIsWide

      private boolean opcodeIsWide

    • PC

      private int PC

    • nextPC

      private int nextPC

    • branchOffset

      private int branchOffset

    • branchTarget

      private int branchTarget

    • branchFallThrough

      private int branchFallThrough

    • switchOffsets

      private int[] switchOffsets

    • switchLabels

      private int[] switchLabels

    • prevOpcode

      private final int[] prevOpcode

    • currentPosInPrevOpcodeBuffer

      private int currentPosInPrevOpcodeBuffer

    • sizePrevOpcodeBuffer

      private int sizePrevOpcodeBuffer

    • defaultSwitchOffset

      private int defaultSwitchOffset

    • classConstantOperand

      @SlashedClassName private String classConstantOperand

    • referencedClass

      private ClassDescriptor referencedClass

    • referencedXClass

      private XClass referencedXClass

    • referencedMethod

      private MethodDescriptor referencedMethod

    • referencedXMethod

      private XMethod referencedXMethod

    • referencedField

      private FieldDescriptor referencedField

    • referencedXField

      private XField referencedXField

    • dottedClassConstantOperand

      private String dottedClassConstantOperand

    • nameConstantOperand

      private String nameConstantOperand

    • sigConstantOperand

      private String sigConstantOperand

    • stringConstantOperand

      private String stringConstantOperand

    • refConstantOperand

      private String refConstantOperand

    • refFieldIsStatic

      private boolean refFieldIsStatic

    • constantRefOperand

      private org.apache.bcel.classfile.Constant constantRefOperand

    • intConstant

      private int intConstant

    • longConstant

      private long longConstant

    • floatConstant

      private float floatConstant

    • doubleConstant

      private double doubleConstant

    • registerOperand

      private int registerOperand

    • isRegisterLoad

      private boolean isRegisterLoad

    • isRegisterStore

      private boolean isRegisterStore

    • INVALID_OFFSET

      private static final int INVALID_OFFSET
      See Also:

    • NOT_AVAILABLE

      private static final String NOT_AVAILABLE
      See Also:

    • M_INT

      public static final byte M_INT
      Meaning of bytecode operands
      See Also:

    • M_UINT

      public static final byte M_UINT
      See Also:

    • M_CP

      public static final byte M_CP
      See Also:

    • M_R

      public static final byte M_R
      See Also:

    • M_BR

      public static final byte M_BR
      See Also:

    • M_PAD

      public static final byte M_PAD
      See Also:

    • MEANING_OF_OPERANDS

      static final byte[][] MEANING_OF_OPERANDS
      Meaning of bytecode operands

    • codeBytes

      protected byte[] codeBytes

    • lineNumberTable

      protected org.apache.bcel.classfile.LineNumberTable lineNumberTable

    • formatter

      private static final NumberFormat formatter

  • Constructor Details

    • DismantleBytecode

      public DismantleBytecode()

  • Method Details

    • getClassDescriptorOperand

      public ClassDescriptor getClassDescriptorOperand()

    • getXClassOperand

      @CheckForNull public XClass getXClassOperand()

    • isMethodCall

      public boolean isMethodCall()

    • getMethodDescriptorOperand

      public MethodDescriptor getMethodDescriptorOperand()

    • getXMethodOperand

      @CheckForNull public XMethod getXMethodOperand()

    • getFieldDescriptorOperand

      public FieldDescriptor getFieldDescriptorOperand()

    • getXFieldOperand

      @CheckForNull public XField getXFieldOperand()

    • getDottedClassConstantOperand

      public String getDottedClassConstantOperand()
      If the current opcode has a class operand, get the associated class constant, dot-formatted

    • getRefConstantOperand

      @Deprecated public String getRefConstantOperand()
      Deprecated.
      If the current opcode has a reference constant operand, get its string representation

    • getNameConstantOperand

      public String getNameConstantOperand()
      If the current opcode has a reference constant operand, get its name

    • getSigConstantOperand

      public String getSigConstantOperand()
      If the current opcode has a reference constant operand, get its signature, slash-formatted

    • getClassConstantOperand

      @SlashedClassName public String getClassConstantOperand()
      If the current opcode has a class constant operand, get the classname, slash-formatted.

    • getStringConstantOperand

      public String getStringConstantOperand()
      If the current opcode has a string constant operand, get its name

    • getConstantRefOperand

      public org.apache.bcel.classfile.Constant getConstantRefOperand()

    • isRegisterLoad

      public boolean isRegisterLoad()

    • isRegisterStore

      public boolean isRegisterStore()

    • getRegisterOperand

      public int getRegisterOperand()

    • getIntConstant

      public int getIntConstant()

    • getLongConstant

      public long getLongConstant()

    • getBranchOffset

      public int getBranchOffset()

    • getBranchTarget

      public int getBranchTarget()

    • getBranchFallThrough

      public int getBranchFallThrough()

    • getDefaultSwitchOffset

      public int getDefaultSwitchOffset()

    • getRefFieldIsStatic

      public boolean getRefFieldIsStatic()

    • getPC

      public int getPC()

    • getPrevOpcode

      public int getPrevOpcode(int offset)
      return previous opcode;
      Parameters:
      offset - 0 for current opcode, 1 for one before that, etc.

    • isWideOpcode

      public boolean isWideOpcode()

    • isBranch

      public static boolean isBranch(int opcode)
      Return whether or not given opcode is a branch instruction.
      Parameters:
      opcode - the opcode
      Returns:
      true if instruction is a branch, false if not

    • isSwitch

      public static boolean isSwitch(int opcode)
      Return whether or not given opcode is a switch instruction.
      Parameters:
      opcode - the opcode
      Returns:
      true if instruction is a switch, false if not

    • getSwitchOffsets

      public int[] getSwitchOffsets()

    • getSwitchLabels

      public int[] getSwitchLabels()

    • resetState

      private void resetState()

    • sortByOffset

      private static void sortByOffset(int[] switchOffsets, int[] switchLabels)

    • getMaxPC

      public int getMaxPC()

    • getCodeByte

      public int getCodeByte(int offset)

    • getOpcode

      public int getOpcode()

    • atCatchBlock

      public boolean atCatchBlock()

    • visit

      public void visit(org.apache.bcel.classfile.Code obj)
      Overrides:
      visit in class BetterVisitor

    • sawDouble

      public void sawDouble(double seen)

    • sawFloat

      public void sawFloat(float seen)

    • sawRegister

      public void sawRegister(int r)

    • sawInt

      public void sawInt(int seen)

    • sawLong

      public void sawLong(long seen)

    • sawBranchTo

      public void sawBranchTo(int targetPC)

    • beforeOpcode

      public boolean beforeOpcode(int seen)
      return false if we should skip calling sawOpcode

    • afterOpcode

      public void afterOpcode(int seen)

    • sawOpcode

      public void sawOpcode(int seen)

    • sawString

      public void sawString(String seen)

    • sawField

      public void sawField()

    • sawMethod

      public void sawMethod()

    • sawIMethod

      public void sawIMethod()

    • sawClass

      public void sawClass()

    • printOpCode

      public void printOpCode(int seen)

    • getNextPC

      public int getNextPC()
      Returns:
      Returns the nextPC.

    • getNextOpcode

      public int getNextOpcode()

    • getNextCodeByte

      public int getNextCodeByte(int offset)

    • isReturn

      public boolean isReturn(int opcode)

    • isShift

      public boolean isShift(int opcode)

    • areOppositeBranches

      public static boolean areOppositeBranches(int opcode1, int opcode2)

    • isRegisterStore

      public boolean isRegisterStore(int opcode)

    • getReferencedXClass

      private XClass getReferencedXClass()
      Returns:
      Returns the referencedXClass.