Package org.apache.bcel.generic

Class CodeExceptionGen

java.lang.Object
org.apache.bcel.generic.CodeExceptionGen
All Implemented Interfaces:
Cloneable, InstructionTargeter
public final class CodeExceptionGen extends Object implements InstructionTargeter, Cloneable
This class represents an exception handler, i.e., specifies the region where a handler is active and an instruction where the actual handling is done. pool as parameters. Opposed to the JVM specification the end of the handled region is set to be inclusive, i.e. all instructions between start and end are protected including the start and end instructions (handles) themselves. The end of the region is automatically mapped to be exclusive when calling getCodeException(), i.e., there is no difference semantically.
See Also:

  • Constructor Details

    • CodeExceptionGen

      public CodeExceptionGen(InstructionHandle startPc, InstructionHandle endPc, InstructionHandle handlerPc, ObjectType catchType)
      Add an exception handler, i.e., specify region where a handler is active and an instruction where the actual handling is done.
      Parameters:
      startPc - Start of handled region (inclusive)
      endPc - End of handled region (inclusive)
      handlerPc - Where handling is done
      catchType - which exception is handled, null for ANY

  • Method Details

    • getCodeException

      public CodeException getCodeException(ConstantPoolGen cp)
      Get CodeException object.
      This relies on that the instruction list has already been dumped to byte code or or that the `setPositions' methods has been called for the instruction list.
      Parameters:
      cp - constant pool

    • setStartPC

      public void setStartPC(InstructionHandle start_pc)

    • setEndPC

      public void setEndPC(InstructionHandle end_pc)

    • setHandlerPC

      public void setHandlerPC(InstructionHandle handler_pc)

    • updateTarget

      public void updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)
      Description copied from interface: InstructionTargeter
      Replaces the target of this targeter from this old handle to the new handle.
      Specified by:
      updateTarget in interface InstructionTargeter
      Parameters:
      old_ih - old target, either start or end
      new_ih - new target

    • containsTarget

      public boolean containsTarget(InstructionHandle ih)
      Description copied from interface: InstructionTargeter
      Checks whether this targeter targets the specified instruction handle.
      Specified by:
      containsTarget in interface InstructionTargeter
      Returns:
      true, if ih is target of this handler

    • setCatchType

      public void setCatchType(ObjectType catchType)
      Sets the type of the Exception to catch. Set 'null' for ANY.

    • getCatchType

      public ObjectType getCatchType()
      Gets the type of the Exception to catch, 'null' for ANY.

    • getStartPC

      public InstructionHandle getStartPC()
      Returns:
      start of handled region (inclusive)

    • getEndPC

      public InstructionHandle getEndPC()
      Returns:
      end of handled region (inclusive)

    • getHandlerPC

      public InstructionHandle getHandlerPC()
      Returns:
      start of handler

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • clone

      public Object clone()
      Overrides:
      clone in class Object