Package proguard.classfile.editor

Class InitializerEditor

java.lang.Object

proguard.classfile.editor.InitializerEditor

All Implemented Interfaces:

AttributeVisitor

public class InitializerEditor
extends java.lang.Object
implements AttributeVisitor

This editor allows to build and/or edit classes (ProgramClass instances). It provides methods to easily add fields and methods to classes.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	InitializerEditor.CodeBuilder	This functional interface provides an instruction sequence builder to its caller.

Constructor Summary

Constructors

Constructor	Description
InitializerEditor(ProgramClass programClass)	Creates a new InitializerEditor for the given class.

Method Summary

Modifier and Type	Method	Description
void	addInitializerInstructions(InitializerEditor.CodeBuilder codeBuilder)	Adds the specified initialization instructions to the edited class.
void	addInitializerInstructions(Instruction[] instructions)	Adds the given initialization instructions to the edited class.
void	addStaticInitializerInstructions(boolean mergeIntoExistingInitializer, InitializerEditor.CodeBuilder codeBuilder)	Adds the specified static initializer instructions to the edited class.
void	addStaticInitializerInstructions(boolean mergeIntoExistingInitializer, Instruction[] instructions)	Adds the given static initializer instructions to the edited class.
void	visitAnyAttribute(Clazz clazz, Attribute attribute)	Visits any Attribute instance.
void	visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)

Methods inherited from class java.lang.Object

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

Methods inherited from interface proguard.classfile.attribute.visitor.AttributeVisitor

visitAnnotationDefaultAttribute, visitAnyAnnotationsAttribute, visitAnyParameterAnnotationsAttribute, visitAnyTypeAnnotationsAttribute, visitBootstrapMethodsAttribute, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitEnclosingMethodAttribute, visitExceptionsAttribute, visitInnerClassesAttribute, visitLineNumberTableAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, visitMethodParametersAttribute, visitModuleAttribute, visitModuleMainClassAttribute, visitModulePackagesAttribute, visitNestHostAttribute, visitNestMembersAttribute, visitPermittedSubclassesAttribute, visitRecordAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSourceDebugExtensionAttribute, visitSourceDirAttribute, visitSourceFileAttribute, visitStackMapAttribute, visitStackMapTableAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitUnknownAttribute

Constructor Detail

InitializerEditor

public InitializerEditor(ProgramClass programClass)

Creates a new InitializerEditor for the given class.

Parameters:

programClass - The class to be edited.

Method Detail

addStaticInitializerInstructions

public void addStaticInitializerInstructions(boolean mergeIntoExistingInitializer,
                                             InitializerEditor.CodeBuilder codeBuilder)

Adds the specified static initializer instructions to the edited class. If the class already contains a static initializer, the new instructions will be appended to the existing initializer.

Parameters:

mergeIntoExistingInitializer - Indicates whether the instructions should be added to the existing static initializer (if it exists), or if a new method should be created, which is then called from the existing initializer.

codeBuilder - The provider of a builder to add instructions. This functional interface can conveniently be implemented as a closure.

addStaticInitializerInstructions

public void addStaticInitializerInstructions(boolean mergeIntoExistingInitializer,
                                             Instruction[] instructions)

Adds the given static initializer instructions to the edited class. If the class already contains a static initializer, the new instructions will be appended to the existing initializer.

Parameters:

mergeIntoExistingInitializer - Indicates whether the instructions should be added to the existing static initializer (if it exists), or if a new method should be created, which is then called from the existing initializer.

instructions - The instructions to be added.

addInitializerInstructions

public void addInitializerInstructions(InitializerEditor.CodeBuilder codeBuilder)

Adds the specified initialization instructions to the edited class.

• If the class doesn't contain a constructor yet, it will be created, and the instructions will be added to this constructor.
• If there is a single super-calling constructor, the instructions will be added at the beginning of its code attribute.
• If there are multiple super-calling constructors, a new private parameterless helper method will be created, to which the instructions will be added. An invocation to this new method will be added at the beginning of the code attribute of all super-calling constructors.

Parameters:

codeBuilder - The provider of a builder to add instructions. This functional interface can conveniently be implemented as a closure.

addInitializerInstructions

public void addInitializerInstructions(Instruction[] instructions)

Adds the given initialization instructions to the edited class.

• If the class doesn't contain a constructor yet, it will be created, and the instructions will be added to this constructor.
• If there is a single super-calling constructor, the instructions will be added at the beginning of its code attribute.
• If there are multiple super-calling constructors, a new private parameterless helper method will be created, to which the instructions will be added. An invocation to this new method will be added at the beginning of the code attribute of all super-calling constructors.

Parameters:

instructions - The instructions to be added.

visitAnyAttribute

public void visitAnyAttribute(Clazz clazz,
                              Attribute attribute)

Description copied from interface: AttributeVisitor

Visits any Attribute instance. The more specific default implementations of this interface delegate to this method.

Specified by:

visitAnyAttribute in interface AttributeVisitor

visitCodeAttribute

public void visitCodeAttribute(Clazz clazz,
                               Method method,
                               CodeAttribute codeAttribute)

Specified by:

visitCodeAttribute in interface AttributeVisitor