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## org.apache.bcel.generic
Class CodeExceptionGen

    java.lang.Object
      |
      +--org.apache.bcel.generic.CodeExceptionGen

All Implemented Interfaces:
  java.lang.Cloneable, InstructionTargeter, java.io.Serializable

public final class CodeExceptionGen
extends java.lang.Object
implements InstructionTargeter, java.lang.Cloneable, java.io.Serializable

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.

Version:
  $Id: CodeExceptionGen.java,v 1.2 2002/07/11 19:39:04 mdahm Exp $
Author:
  M. Dahm
See Also:
  `MethodGen`, `CodeException`, `InstructionHandle`, Serialized Form

Constructor Summary
`CodeExceptionGen(InstructionHandle start_pc, InstructionHandle end_pc, InstructionHandle handler_pc, ObjectType catch_type)` Add an exception handler, i.e., specify region where a handler is active and an instruction where the actual handling is done.

Method Summary
`java.lang.Object` | `clone()`
`boolean` | `containsTarget(InstructionHandle ih)`
`ObjectType` | `getCatchType()` Gets the type of the Exception to catch, 'null' for ANY.
`CodeException` | `getCodeException(ConstantPoolGen cp)` Get CodeException object.
`InstructionHandle` | `getEndPC()`
`InstructionHandle` | `getHandlerPC()`
`InstructionHandle` | `getStartPC()`
`void` | `setCatchType(ObjectType catch_type)` Sets the type of the Exception to catch.
`void` | `setEndPC(InstructionHandle end_pc)`
`void` | `setHandlerPC(InstructionHandle handler_pc)`
`void` | `setStartPC(InstructionHandle start_pc)`
`java.lang.String` | `toString()`
`void` | `updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### CodeExceptionGen

    public CodeExceptionGen(InstructionHandle start_pc,
                            InstructionHandle end_pc,
                            InstructionHandle handler_pc,
                            ObjectType catch_type)

  Add an exception handler, i.e., specify region where a handler is active and an instruction where the actual handling is done.

Parameters:
  `start_pc` - Start of handled region (inclusive)
  `end_pc` - End of handled region (inclusive)
  `handler_pc` - Where handling is done
  `catch_type` - which exception is handled, null for ANY

Method Detail

### 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)

  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)

  Specified by:
    `containsTarget` in interface `InstructionTargeter`
  Returns:
    true, if ih is target of this handler

### setCatchType

    public void setCatchType(ObjectType catch_type)

  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 java.lang.String toString()

  Overrides:
    `toString` in class `java.lang.Object`

### clone

    public java.lang.Object clone()

  Overrides:
    `clone` in class `java.lang.Object`

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Copyright © 2002-2003 Apache Software Foundation. All Rights Reserved.