proguard.optimize.peephole

Class InstructionSequencesReplacer

java.lang.Object

proguard.classfile.instruction.visitor.MultiInstructionVisitor

proguard.optimize.peephole.InstructionSequencesReplacer

All Implemented Interfaces:

InstructionVisitor

public class InstructionSequencesReplacer
extends MultiInstructionVisitor
implements InstructionVisitor

This InstructionVisitor replaces multiple instruction sequences at once.

Author:

Eric Lafortune

See Also:

InstructionSequenceReplacer

Constructor Summary

Constructors

Constructor and Description
InstructionSequencesReplacer(Constant[] patternConstants, Instruction[][][] instructionSequences, BranchTargetFinder branchTargetFinder, CodeAttributeEditor codeAttributeEditor) Creates a new InstructionSequencesReplacer.
InstructionSequencesReplacer(Constant[] patternConstants, Instruction[][][] instructionSequences, BranchTargetFinder branchTargetFinder, CodeAttributeEditor codeAttributeEditor, InstructionVisitor extraInstructionVisitor) Creates a new InstructionSequenceReplacer.

Method Summary

Methods inherited from class proguard.classfile.instruction.visitor.MultiInstructionVisitor

addInstructionVisitor, visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction, visitVariableInstruction

Methods inherited from class java.lang.Object

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

Methods inherited from interface proguard.classfile.instruction.visitor.InstructionVisitor

visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction, visitVariableInstruction

Constructor Detail

InstructionSequencesReplacer

public InstructionSequencesReplacer(Constant[] patternConstants,
                            Instruction[][][] instructionSequences,
                            BranchTargetFinder branchTargetFinder,
                            CodeAttributeEditor codeAttributeEditor)

Creates a new InstructionSequencesReplacer.

Parameters:

patternConstants - any constants referenced by the pattern instruction.

instructionSequences - the instruction sequences to be replaced, with subsequently the sequence pair index, the patten/replacement index (0 or 1), and the instruction index in the sequence.

branchTargetFinder - a branch target finder that has been initialized to indicate branch targets in the visited code.

codeAttributeEditor - a code editor that can be used for accumulating changes to the code.

InstructionSequencesReplacer

public InstructionSequencesReplacer(Constant[] patternConstants,
                            Instruction[][][] instructionSequences,
                            BranchTargetFinder branchTargetFinder,
                            CodeAttributeEditor codeAttributeEditor,
                            InstructionVisitor extraInstructionVisitor)

Creates a new InstructionSequenceReplacer.

Parameters:

patternConstants - any constants referenced by the pattern instruction.

instructionSequences - the instruction sequences to be replaced, with subsequently the sequence pair index, the patten/replacement index (0 or 1), and the instruction index in the sequence.

branchTargetFinder - a branch target finder that has been initialized to indicate branch targets in the visited code.

codeAttributeEditor - a code editor that can be used for accumulating changes to the code.

extraInstructionVisitor - an optional extra visitor for all deleted load instructions.