serp.bytecode
Interface InstructionPtr

All Known Implementing Classes:

ExceptionHandler, GotoInstruction, IfInstruction, JumpInstruction, LineNumber, LineNumberTable, Local, LocalTable, LocalVariable, LocalVariableTable, LocalVariableType, LocalVariableTypeTable, LookupSwitchInstruction, SwitchInstruction, TableSwitchInstruction

public interface InstructionPtr

An entity that maintains ptrs to instructions in a code block.

Author:

Abe White

Method Summary

Code	getCode() Returns the Code block that owns the Instruction(s) this InstructionPtr points to.
void	replaceTarget(Instruction oldTarget, Instruction newTarget) Replace the given old, likely invalid, target with a new target.
void	updateTargets() Use the byte indexes read from the class file to calculate and set references to the target instruction(s) for this ptr.

Method Detail

updateTargets

void updateTargets()

Use the byte indexes read from the class file to calculate and set references to the target instruction(s) for this ptr. This method will be called after the byte code has been read in for the first time and before it is written after modification.

replaceTarget

void replaceTarget(Instruction oldTarget,
                   Instruction newTarget)

Replace the given old, likely invalid, target with a new target. The new target Instruction is guaranteed to be in the same code block as this InstructionPtr.

getCode

Code getCode()

Returns the Code block that owns the Instruction(s) this InstructionPtr points to.