proguard.classfile.util.inject.location

Class FirstBlock

java.lang.Object

proguard.classfile.util.inject.location.FirstBlock

All Implemented Interfaces:

InjectStrategy

public class FirstBlock
extends java.lang.Object
implements InjectStrategy

An implementation of the InjectStrategy interface to find the earliest location suitable for injecting method invocation instructions.

Nested Class Summary

Nested classes/interfaces inherited from interface proguard.classfile.util.inject.location.InjectStrategy

InjectStrategy.InjectLocation

Constructor Summary

Constructors

Constructor and Description
FirstBlock()

Method Summary

Modifier and Type	Method and Description
InjectStrategy.InjectLocation[]	getAllSuitableInjectionLocation(ProgramClass targetClass, ProgramMethod targetMethod) Find the first offset to inject a method invocation.
InjectStrategy.InjectLocation	getSingleInjectionLocation(ProgramClass targetClass, ProgramMethod targetMethod) Find the first offset to inject a method invocation.

Methods inherited from class java.lang.Object

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

Constructor Detail

FirstBlock

public FirstBlock()

Method Detail

getSingleInjectionLocation

public InjectStrategy.InjectLocation getSingleInjectionLocation(ProgramClass targetClass,
                                                                ProgramMethod targetMethod)

Find the first offset to inject a method invocation. If the target method is a constructor, the offset is right after the `invokespecial` to the constructor of the current class or its super class.

Specified by:

getSingleInjectionLocation in interface InjectStrategy

Parameters:

targetClass - The class holding the method in which a method invocation will be injected.

targetMethod - The target method to have a method invocation injected into.

Returns:

An InjectLocation instance indicating the first offset suitable for injection.

getAllSuitableInjectionLocation

public InjectStrategy.InjectLocation[] getAllSuitableInjectionLocation(ProgramClass targetClass,
                                                                       ProgramMethod targetMethod)

Find the first offset to inject a method invocation. If the target method is a constructor, the offset is right after the `invokespecial` to the constructor of the current class or its super class.

Specified by:

getAllSuitableInjectionLocation in interface InjectStrategy

Parameters:

targetClass - The class holding the method in which a method invocation will be injected.

targetMethod - The target method to have a method invocation injected into.

Returns:

An array of one InjectLocation instance indicating the first offset suitable for injection.