proguard.evaluation

Class Processor

java.lang.Object

proguard.evaluation.Processor

All Implemented Interfaces:

InstructionVisitor

public class Processor
extends Object
implements InstructionVisitor

This InstructionVisitor executes the instructions that it visits on a given local variable frame and stack.

Author:

Eric Lafortune

Constructor Summary

Constructors

Constructor and Description
Processor(Variables variables, Stack stack, ValueFactory valueFactory, BranchUnit branchUnit, InvocationUnit invocationUnit, boolean alwaysCast) Creates a new processor that operates on the given environment.

Method Summary

Modifier and Type	Method and Description
void	visitBranchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, BranchInstruction branchInstruction)
void	visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
void	visitLookUpSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, LookUpSwitchInstruction lookUpSwitchInstruction)
void	visitSimpleInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SimpleInstruction simpleInstruction)
void	visitTableSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, TableSwitchInstruction tableSwitchInstruction)
void	visitVariableInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VariableInstruction variableInstruction)

Methods inherited from class java.lang.Object

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

Constructor Detail

Processor

public Processor(Variables variables,
                 Stack stack,
                 ValueFactory valueFactory,
                 BranchUnit branchUnit,
                 InvocationUnit invocationUnit,
                 boolean alwaysCast)

Creates a new processor that operates on the given environment.

Parameters:

variables - the local variable frame.

stack - the local stack.

valueFactory - the value factory that will create all values during the evaluation.

branchUnit - the class that can affect the program counter.

invocationUnit - the class that can access other program members.

alwaysCast - a flag that specifies whether downcasts or casts of null values should always be performed.

Method Detail

visitSimpleInstruction

public void visitSimpleInstruction(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   int offset,
                                   SimpleInstruction simpleInstruction)

Specified by:

visitSimpleInstruction in interface InstructionVisitor

visitConstantInstruction

public void visitConstantInstruction(Clazz clazz,
                                     Method method,
                                     CodeAttribute codeAttribute,
                                     int offset,
                                     ConstantInstruction constantInstruction)

Specified by:

visitConstantInstruction in interface InstructionVisitor

visitVariableInstruction

public void visitVariableInstruction(Clazz clazz,
                                     Method method,
                                     CodeAttribute codeAttribute,
                                     int offset,
                                     VariableInstruction variableInstruction)

Specified by:

visitVariableInstruction in interface InstructionVisitor

visitBranchInstruction

public void visitBranchInstruction(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   int offset,
                                   BranchInstruction branchInstruction)

Specified by:

visitBranchInstruction in interface InstructionVisitor

visitTableSwitchInstruction

public void visitTableSwitchInstruction(Clazz clazz,
                                        Method method,
                                        CodeAttribute codeAttribute,
                                        int offset,
                                        TableSwitchInstruction tableSwitchInstruction)

Specified by:

visitTableSwitchInstruction in interface InstructionVisitor

visitLookUpSwitchInstruction

public void visitLookUpSwitchInstruction(Clazz clazz,
                                         Method method,
                                         CodeAttribute codeAttribute,
                                         int offset,
                                         LookUpSwitchInstruction lookUpSwitchInstruction)

Specified by:

visitLookUpSwitchInstruction in interface InstructionVisitor