org.multijava.util.backend
Class CodeSequence

java.lang.Object
  org.multijava.util.backend.CodeSequence

public class CodeSequence

extends Object

This class reconstructs the code sequence

Field Summary
private  InstructionHandle	codeStart
private  InstructionHandle	current
private  int	max
private  Stack	stack

 

Constructor Summary

CodeSequence()

 

Method Summary
void	close()           Closes the code sequence Generates pending basic blocks code
InstructionHandle	getCodeStart()           Returns the first instruction of the sequence
InstructionHandle	getCurrent()           Returns the (current) last instruction of the sequence
void	jumpToBasicBlock(BasicBlock block)           Adds a basic block and a jump instruction as needed
void	plantBasicBlock(BasicBlock block)           Adds a basic block at the end of the sequence
void	plantBasicBlock(BasicBlock block, int max)           Adds a basic block at the end of the sequence
void	plantBasicBlock(BasicBlock block, JumpInstruction jump, QQuadruple[] transition)           Adds a basic block at the end of the sequence
void	plantInstruction(InstructionHandle handle)           Adds an instruction at the end of the sequence
void	plantInstruction(Instruction insn)           Adds an instruction at the end of the sequence
void	plantQuadruple(QNode node)           Adds a quadruple at the end of the sequence

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

codeStart

private InstructionHandle codeStart

current

private InstructionHandle current

max

private int max

stack

private Stack stack

CodeSequence

public CodeSequence()

getCodeStart

public InstructionHandle getCodeStart()

Returns the first instruction of the sequence

getCurrent

public InstructionHandle getCurrent()

Returns the (current) last instruction of the sequence

plantInstruction

public void plantInstruction(InstructionHandle handle)

Adds an instruction at the end of the sequence

Parameters:

handle - an instruction handle

plantInstruction

public void plantInstruction(Instruction insn)

Adds an instruction at the end of the sequence

Parameters:

insn - the instruction

plantQuadruple

public void plantQuadruple(QNode node)

Adds a quadruple at the end of the sequence

Parameters:

node - the node of the quadruple

jumpToBasicBlock

public void jumpToBasicBlock(BasicBlock block)

Adds a basic block and a jump instruction as needed

Parameters:

block - the destination (BasicBlock)

plantBasicBlock

public void plantBasicBlock(BasicBlock block)

Adds a basic block at the end of the sequence

Parameters:

block - the destination (BasicBlock)

plantBasicBlock

public void plantBasicBlock(BasicBlock block,
                            JumpInstruction jump,
                            QQuadruple[] transition)

Adds a basic block at the end of the sequence

Parameters:

block - the destination (BasicBlock)

jump - the jump instruction to this block

transition - the quadruple MOVE instructions

plantBasicBlock

public void plantBasicBlock(BasicBlock block,
                            int max)

Adds a basic block at the end of the sequence

Parameters:

block - the destination (BasicBlock)

max - the maximum position of this block on the original source this is made to avoid locality problems

close

public void close()

Closes the code sequence Generates pending basic blocks code