Package proguard.classfile.editor

Class InstructionSequencesReplacer

java.lang.Object

proguard.classfile.instruction.visitor.MultiInstructionVisitor

proguard.classfile.editor.InstructionSequencesReplacer

All Implemented Interfaces:

InstructionVisitor

public class InstructionSequencesReplacer
extends MultiInstructionVisitor
implements InstructionVisitor

This InstructionVisitor replaces multiple instruction sequences at once.

The replacement sequences are optional, defaulting to the empty sequence, to delete the matched pattern sequences.

See Also:

• InstructionSequenceReplacer

Constructor Summary

Constructors

Constructor	Description
InstructionSequencesReplacer(Constant[] constants, Instruction[][][] instructionSequences, BranchTargetFinder branchTargetFinder, CodeAttributeEditor codeAttributeEditor)	Creates a new InstructionSequencesReplacer.
InstructionSequencesReplacer(Constant[] constants, 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

visitAnyInstruction, visitAnySwitchInstruction, visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction, visitVariableInstruction

Constructor Details

InstructionSequencesReplacer

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

Creates a new InstructionSequencesReplacer.

Parameters:

constants - any constants referenced by the pattern instructions and replacement instructions.

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[] constants,
 Instruction[][][] instructionSequences,
 BranchTargetFinder branchTargetFinder,
 CodeAttributeEditor codeAttributeEditor,
 InstructionVisitor extraInstructionVisitor)

Creates a new InstructionSequenceReplacer.

Parameters:

constants - any constants referenced by the pattern instructions and replacement instructions.

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.