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Class espresso.classfile.classgen.BranchInstruction 

java.lang.Object
   |
   +----espresso.classfile.classgen.Instruction
           |
           +----espresso.classfile.classgen.BranchInstruction
public abstract class BranchInstruction
extends Instruction
Abstract super class for branching instructions like GOTO, IFEQ, etc.. Branch instructions may have a variable length, namely GOTO, JSR, LOOKUPSWITCH and TABLESWITCH.

See Also:
InstructionList

Variable Index

o index
o target

Constructor Index

o BranchInstruction()
Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction().
o BranchInstruction(short, InstructionHandle)

Method Index

o dump(DataOutputStream)
Dump instruction as byte code to stream out.
o getIndex()
o getTarget()
o getTargetOffset()
o getTargetOffset(Instruction)
o getTargetOffset(InstructionHandle)
o initFromFile(ByteSequence, boolean)
Read needed data (e.g.
o setTarget(InstructionHandle)
Set branch target
o toString()

Variables

o index 
 protected int index
o target 
 protected InstructionHandle target

Constructors

o BranchInstruction 
 BranchInstruction()
Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction(). Not to be used otherwise.

o BranchInstruction 
 protected BranchInstruction(short tag,
                             InstructionHandle target)
Parameters:
instruction - Target instruction to branch to

Methods

o dump 
 public void dump(DataOutputStream out) throws IOException
Dump instruction as byte code to stream out.

Parameters:
out - Output stream
Overrides:
dump in class Instruction
o getTarget 
 public InstructionHandle getTarget()
Returns:
target of branch instruction
o setTarget 
 public void setTarget(InstructionHandle target)
Set branch target

o getTargetOffset 
 protected int getTargetOffset(Instruction target)
Parameters:
target - branch target
Returns:
the offset to `target' relative to this instruction
o getTargetOffset 
 protected int getTargetOffset(InstructionHandle target)
Parameters:
target - branch target
Returns:
the offset to `target' relative to this instruction
o getTargetOffset 
 protected int getTargetOffset()
Returns:
the offset to this instruction's target
o toString 
 public String toString()
Returns:
mnemonic for instruction
Overrides:
toString in class Instruction
o initFromFile 
 protected void initFromFile(ByteSequence bytes,
                             boolean wide) throws IOException
Read needed data (e.g. index) from file. Conversion to a InstructionHandle is done in InstructionList(byte[]).

Overrides:
initFromFile in class Instruction
See Also:
InstructionList
o getIndex 
 final int getIndex()
Returns:
target offset 
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