org.apache.bcel.generic
public class InstructionHandle extends Object implements Serializable
See Also: Instruction BranchHandle InstructionList
Field Summary | |
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protected int | i_position |
Constructor Summary | |
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protected | InstructionHandle(Instruction i) |
Method Summary | |
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void | accept(Visitor v) Convenience method, simply calls accept() on the contained instruction.
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void | addAttribute(Object key, Object attr) Add an attribute to an instruction handle.
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protected void | addHandle() Overridden in BranchHandle |
void | addTargeter(InstructionTargeter t)
Denote this handle is being referenced by t. |
Object | getAttribute(Object key) Get attribute of an instruction handle.
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Collection | getAttributes() |
Instruction | getInstruction() |
InstructionHandle | getNext() |
int | getPosition() |
InstructionHandle | getPrev() |
InstructionTargeter[] | getTargeters() |
boolean | hasTargeters() |
void | removeAllTargeters() Remove all targeters, if any. |
void | removeAttribute(Object key) Delete an attribute of an instruction handle.
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void | removeTargeter(InstructionTargeter t)
Denote this handle isn't referenced anymore by t. |
void | setInstruction(Instruction i)
Replace current instruction contained in this handle.
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Instruction | swapInstruction(Instruction i)
Temporarily swap the current instruction, without disturbing
anything. |
String | toString(boolean verbose) |
String | toString() |
protected int | updatePosition(int offset, int max_offset)
Called by InstructionList.setPositions when setting the position for every
instruction. |
Parameters: v Visitor object
Parameters: key the key object to store/retrieve the attribute attr the attribute to associate with this handle
Parameters: key the key object to store/retrieve the attribute
Returns: all attributes associated with this handle
Returns: the position, i.e., the byte code offset of the contained instruction. This is accurate only after InstructionList.setPositions() has been called.
Returns: null, if there are no targeters
Parameters: key the key object to retrieve the attribute
Returns: a (verbose) string representation of the contained instruction.
Returns: a string representation of the contained instruction.
Parameters: offset additional offset caused by preceding (variable length) instructions max_offset the maximum offset that may be caused by these instructions
Returns: additional offset caused by possible change of this instruction's length