ClassWriter (FastChar 1.6.0 API)

java.lang.Object
- com.fastchar.asm.org.objectweb.ClassVisitor
- - com.fastchar.asm.org.objectweb.ClassWriter

```
public class ClassWriter
extends ClassVisitor
```
A ClassVisitor that generates a corresponding ClassFile structure, as defined in the Java Virtual Machine Specification (JVMS). It can be used alone, to generate a Java class "from scratch", or with one or more ClassReader and adapter ClassVisitor to generate a modified class from one or more existing Java classes.

作者:

Eric Bruneton

另请参阅:

JVMS 4

字段概要

字段
限定符和类型	字段和说明
`private int`	`accessFlags` The access_flags field of the JVMS ClassFile structure.
`private int`	`compute` Indicates what must be automatically computed in `MethodWriter`.
`static int`	`COMPUTE_FRAMES` A flag to automatically compute the stack map frames of methods from scratch.
`static int`	`COMPUTE_MAXS` A flag to automatically compute the maximum stack size and the maximum number of local variables of methods.
`private ByteVector`	`debugExtension` The debug_extension field of the SourceDebugExtension attribute, or null.
`private int`	`enclosingClassIndex` The class_index field of the EnclosingMethod attribute, or 0.
`private int`	`enclosingMethodIndex` The method_index field of the EnclosingMethod attribute.
`private Attribute`	`firstAttribute` The first non standard attribute of this class.
`private FieldWriter`	`firstField` The fields of this class, stored in a linked list of `FieldWriter` linked via their `FieldVisitor.fv` field.
`private MethodWriter`	`firstMethod` The methods of this class, stored in a linked list of `MethodWriter` linked via their `MethodVisitor.mv` field.
`private RecordComponentWriter`	`firstRecordComponent` The record components of this class, stored in a linked list of `RecordComponentWriter` linked via their `RecordComponentVisitor.delegate` field.
`private ByteVector`	`innerClasses` The 'classes' array of the InnerClasses attribute, or null.
`private int`	`interfaceCount` The interface_count field of the JVMS ClassFile structure.
`private int[]`	`interfaces` The 'interfaces' array of the JVMS ClassFile structure.
`private FieldWriter`	`lastField` The fields of this class, stored in a linked list of `FieldWriter` linked via their `FieldVisitor.fv` field.
`private MethodWriter`	`lastMethod` The methods of this class, stored in a linked list of `MethodWriter` linked via their `MethodVisitor.mv` field.
`private RecordComponentWriter`	`lastRecordComponent` The record components of this class, stored in a linked list of `RecordComponentWriter` linked via their `RecordComponentVisitor.delegate` field.
`private AnnotationWriter`	`lastRuntimeInvisibleAnnotation` The last runtime invisible annotation of this class.
`private AnnotationWriter`	`lastRuntimeInvisibleTypeAnnotation` The last runtime invisible type annotation of this class.
`private AnnotationWriter`	`lastRuntimeVisibleAnnotation` The last runtime visible annotation of this class.
`private AnnotationWriter`	`lastRuntimeVisibleTypeAnnotation` The last runtime visible type annotation of this class.
`private ModuleWriter`	`moduleWriter` The Module attribute of this class, or null.
`private int`	`nestHostClassIndex` The host_class_index field of the NestHost attribute, or 0.
`private ByteVector`	`nestMemberClasses` The 'classes' array of the NestMembers attribute, or null.
`private int`	`numberOfInnerClasses` The number_of_classes field of the InnerClasses attribute, or 0.
`private int`	`numberOfNestMemberClasses` The number_of_classes field of the NestMembers attribute, or 0.
`private int`	`numberOfPermittedSubclasses` The number_of_classes field of the PermittedSubclasses attribute, or 0.
`private ByteVector`	`permittedSubclasses` The 'classes' array of the PermittedSubclasses attribute, or null.
`private int`	`signatureIndex` The signature_index field of the Signature attribute, or 0.
`private int`	`sourceFileIndex` The source_file_index field of the SourceFile attribute, or 0.
`private int`	`superClass` The super_class field of the JVMS ClassFile structure.
`private SymbolTable`	`symbolTable` The symbol table for this class (contains the constant_pool and the BootstrapMethods).
`private int`	`thisClass` The this_class field of the JVMS ClassFile structure.
`private int`	`version` The minor_version and major_version fields of the JVMS ClassFile structure. minor_version is stored in the 16 most significant bits, and major_version in the 16 least significant bits.

从类继承的字段 com.fastchar.asm.org.objectweb.ClassVisitor
api, cv

构造器概要

构造器
构造器和说明
`ClassWriter(ClassReader classReader, int flags)` Constructs a new `ClassWriter` object and enables optimizations for "mostly add" bytecode transformations.
`ClassWriter(int flags)` Constructs a new `ClassWriter` object.

方法概要

所有方法实例方法具体方法已过时的方法
限定符和类型	方法和说明
`private Attribute[]`	`getAttributePrototypes()` Returns the prototypes of the attributes used by this class, its fields and its methods.
`protected ClassLoader`	`getClassLoader()` Returns the `ClassLoader` to be used by the default implementation of `getCommonSuperClass(String, String)`, that of this `ClassWriter`'s runtime type by default.
`protected String`	`getCommonSuperClass(String type1, String type2)` Returns the common super type of the two given types.
`int`	`newClass(String value)` Adds a class reference to the constant pool of the class being build.
`int`	`newConst(Object value)` Adds a number or string constant to the constant pool of the class being build.
`int`	`newConstantDynamic(String name, String descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments)` Adds a dynamic constant reference to the constant pool of the class being build.
`int`	`newField(String owner, String name, String descriptor)` Adds a field reference to the constant pool of the class being build.
`int`	`newHandle(int tag, String owner, String name, String descriptor)` 已过时。 this method is superseded by `newHandle(int, String, String, String, boolean)`.
`int`	`newHandle(int tag, String owner, String name, String descriptor, boolean isInterface)` Adds a handle to the constant pool of the class being build.
`int`	`newInvokeDynamic(String name, String descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments)` Adds an invokedynamic reference to the constant pool of the class being build.
`int`	`newMethod(String owner, String name, String descriptor, boolean isInterface)` Adds a method reference to the constant pool of the class being build.
`int`	`newMethodType(String methodDescriptor)` Adds a method type reference to the constant pool of the class being build.
`int`	`newModule(String moduleName)` Adds a module reference to the constant pool of the class being build.
`int`	`newNameType(String name, String descriptor)` Adds a name and type to the constant pool of the class being build.
`int`	`newPackage(String packageName)` Adds a package reference to the constant pool of the class being build.
`int`	`newUTF8(String value)` Adds an UTF8 string to the constant pool of the class being build.
`private byte[]`	`replaceAsmInstructions(byte[] classFile, boolean hasFrames)` Returns the equivalent of the given class file, with the ASM specific instructions replaced with standard ones.
`byte[]`	`toByteArray()` Returns the content of the class file that was built by this ClassWriter.
`void`	`visit(int version, int access, String name, String signature, String superName, String[] interfaces)` Visits the header of the class.
`AnnotationVisitor`	`visitAnnotation(String descriptor, boolean visible)` Visits an annotation of the class.
`void`	`visitAttribute(Attribute attribute)` Visits a non standard attribute of the class.
`void`	`visitEnd()` Visits the end of the class.
`FieldVisitor`	`visitField(int access, String name, String descriptor, String signature, Object value)` Visits a field of the class.
`void`	`visitInnerClass(String name, String outerName, String innerName, int access)` Visits information about an inner class.
`MethodVisitor`	`visitMethod(int access, String name, String descriptor, String signature, String[] exceptions)` Visits a method of the class.
`ModuleVisitor`	`visitModule(String name, int access, String version)` Visit the module corresponding to the class.
`void`	`visitNestHost(String nestHost)` Visits the nest host class of the class.
`void`	`visitNestMember(String nestMember)` Visits a member of the nest.
`void`	`visitOuterClass(String owner, String name, String descriptor)` Visits the enclosing class of the class.
`void`	`visitPermittedSubclass(String permittedSubclass)` Visits a permitted subclasses.
`RecordComponentVisitor`	`visitRecordComponent(String name, String descriptor, String signature)` Visits a record component of the class.
`void`	`visitSource(String file, String debug)` Visits the source of the class.
`AnnotationVisitor`	`visitTypeAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible)` Visits an annotation on a type in the class signature.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - COMPUTE_MAXS
```
public static final int COMPUTE_MAXS
```
    A flag to automatically compute the maximum stack size and the maximum number of local variables of methods. If this flag is set, then the arguments of the MethodVisitor.visitMaxs(int, int) method of the MethodVisitor returned by the visitMethod(int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[]) method will be ignored, and computed automatically from the signature and the bytecode of each method.
    Note: for classes whose version is Opcodes.V1_7 of more, this option requires valid stack map frames. The maximum stack size is then computed from these frames, and from the bytecode instructions in between. If stack map frames are not present or must be recomputed, used COMPUTE_FRAMES instead.
    
    另请参阅:
    
    ClassWriter(int), 常量字段值
  - COMPUTE_FRAMES
```
public static final int COMPUTE_FRAMES
```
    A flag to automatically compute the stack map frames of methods from scratch. If this flag is set, then the calls to the MethodVisitor.visitFrame(int, int, java.lang.Object[], int, java.lang.Object[]) method are ignored, and the stack map frames are recomputed from the methods bytecode. The arguments of the MethodVisitor.visitMaxs(int, int) method are also ignored and recomputed from the bytecode. In other words, COMPUTE_FRAMES implies COMPUTE_MAXS.
    
    另请参阅:
    
    ClassWriter(int), 常量字段值
  - version
```
private int version
```
    The minor_version and major_version fields of the JVMS ClassFile structure. minor_version is stored in the 16 most significant bits, and major_version in the 16 least significant bits.
  - symbolTable
```
private final SymbolTable symbolTable
```
    The symbol table for this class (contains the constant_pool and the BootstrapMethods).
  - accessFlags
```
private int accessFlags
```
    The access_flags field of the JVMS ClassFile structure. This field can contain ASM specific access flags, such as Opcodes.ACC_DEPRECATED or Opcodes.ACC_RECORD, which are removed when generating the ClassFile structure.
  - thisClass
```
private int thisClass
```
    The this_class field of the JVMS ClassFile structure.
  - superClass
```
private int superClass
```
    The super_class field of the JVMS ClassFile structure.
  - interfaceCount
```
private int interfaceCount
```
    The interface_count field of the JVMS ClassFile structure.
  - interfaces
```
private int[] interfaces
```
    The 'interfaces' array of the JVMS ClassFile structure.
  - firstField
```
private FieldWriter firstField
```
    The fields of this class, stored in a linked list of FieldWriter linked via their FieldVisitor.fv field. This field stores the first element of this list.
  - lastField
```
private FieldWriter lastField
```
    The fields of this class, stored in a linked list of FieldWriter linked via their FieldVisitor.fv field. This field stores the last element of this list.
  - firstMethod
```
private MethodWriter firstMethod
```
    The methods of this class, stored in a linked list of MethodWriter linked via their MethodVisitor.mv field. This field stores the first element of this list.
  - lastMethod
```
private MethodWriter lastMethod
```
    The methods of this class, stored in a linked list of MethodWriter linked via their MethodVisitor.mv field. This field stores the last element of this list.
  - numberOfInnerClasses
```
private int numberOfInnerClasses
```
    The number_of_classes field of the InnerClasses attribute, or 0.
  - innerClasses
```
private ByteVector innerClasses
```
    The 'classes' array of the InnerClasses attribute, or null.
  - enclosingClassIndex
```
private int enclosingClassIndex
```
    The class_index field of the EnclosingMethod attribute, or 0.
  - enclosingMethodIndex
```
private int enclosingMethodIndex
```
    The method_index field of the EnclosingMethod attribute.
  - signatureIndex
```
private int signatureIndex
```
    The signature_index field of the Signature attribute, or 0.
  - sourceFileIndex
```
private int sourceFileIndex
```
    The source_file_index field of the SourceFile attribute, or 0.
  - debugExtension
```
private ByteVector debugExtension
```
    The debug_extension field of the SourceDebugExtension attribute, or null.
  - lastRuntimeVisibleAnnotation
```
private AnnotationWriter lastRuntimeVisibleAnnotation
```
    The last runtime visible annotation of this class. The previous ones can be accessed with the AnnotationWriter.previousAnnotation field. May be null.
  - lastRuntimeInvisibleAnnotation
```
private AnnotationWriter lastRuntimeInvisibleAnnotation
```
    The last runtime invisible annotation of this class. The previous ones can be accessed with the AnnotationWriter.previousAnnotation field. May be null.
  - lastRuntimeVisibleTypeAnnotation
```
private AnnotationWriter lastRuntimeVisibleTypeAnnotation
```
    The last runtime visible type annotation of this class. The previous ones can be accessed with the AnnotationWriter.previousAnnotation field. May be null.
  - lastRuntimeInvisibleTypeAnnotation
```
private AnnotationWriter lastRuntimeInvisibleTypeAnnotation
```
    The last runtime invisible type annotation of this class. The previous ones can be accessed with the AnnotationWriter.previousAnnotation field. May be null.
  - moduleWriter
```
private ModuleWriter moduleWriter
```
    The Module attribute of this class, or null.
  - nestHostClassIndex
```
private int nestHostClassIndex
```
    The host_class_index field of the NestHost attribute, or 0.
  - numberOfNestMemberClasses
```
private int numberOfNestMemberClasses
```
    The number_of_classes field of the NestMembers attribute, or 0.
  - nestMemberClasses
```
private ByteVector nestMemberClasses
```
    The 'classes' array of the NestMembers attribute, or null.
  - numberOfPermittedSubclasses
```
private int numberOfPermittedSubclasses
```
    The number_of_classes field of the PermittedSubclasses attribute, or 0.
  - permittedSubclasses
```
private ByteVector permittedSubclasses
```
    The 'classes' array of the PermittedSubclasses attribute, or null.
  - firstRecordComponent
```
private RecordComponentWriter firstRecordComponent
```
    The record components of this class, stored in a linked list of RecordComponentWriter linked via their RecordComponentVisitor.delegate field. This field stores the first element of this list.
  - lastRecordComponent
```
private RecordComponentWriter lastRecordComponent
```
    The record components of this class, stored in a linked list of RecordComponentWriter linked via their RecordComponentVisitor.delegate field. This field stores the last element of this list.
  - firstAttribute
```
private Attribute firstAttribute
```
    The first non standard attribute of this class. The next ones can be accessed with the Attribute.nextAttribute field. May be null.
    WARNING: this list stores the attributes in the reverse order of their visit. firstAttribute is actually the last attribute visited in visitAttribute(com.fastchar.asm.org.objectweb.Attribute). The toByteArray() method writes the attributes in the order defined by this list, i.e. in the reverse order specified by the user.
  - compute
```
private int compute
```
    Indicates what must be automatically computed in MethodWriter. Must be one of MethodWriter.COMPUTE_NOTHING, MethodWriter.COMPUTE_MAX_STACK_AND_LOCAL, MethodWriter.COMPUTE_INSERTED_FRAMES, or MethodWriter.COMPUTE_ALL_FRAMES.
- 构造器详细资料
  - ClassWriter
```
public ClassWriter(int flags)
```
    Constructs a new ClassWriter object.
    
    参数:
    
    flags - option flags that can be used to modify the default behavior of this class. Must be zero or more of COMPUTE_MAXS and COMPUTE_FRAMES.
  - ClassWriter
```
public ClassWriter(ClassReader classReader,
                   int flags)
```
    Constructs a new ClassWriter object and enables optimizations for "mostly add" bytecode transformations. These optimizations are the following:
    - The constant pool and bootstrap methods from the original class are copied as is in the new class, which saves time. New constant pool entries and new bootstrap methods will be added at the end if necessary, but unused constant pool entries or bootstrap methods won't be removed.
    - Methods that are not transformed are copied as is in the new class, directly from the original class bytecode (i.e. without emitting visit events for all the method instructions), which saves a lot of time. Untransformed methods are detected by the fact that the ClassReader receives MethodVisitor objects that come from a ClassWriter (and not from any other ClassVisitor instance).
    参数:
    
    classReader - the ClassReader used to read the original class. It will be used to copy the entire constant pool and bootstrap methods from the original class and also to copy other fragments of original bytecode where applicable.
    
    flags - option flags that can be used to modify the default behavior of this class.Must be zero or more of COMPUTE_MAXS and COMPUTE_FRAMES. These option flags do not affect methods that are copied as is in the new class. This means that neither the maximum stack size nor the stack frames will be computed for these methods.
- 方法详细资料
  - visit
```
public final void visit(int version,
                        int access,
                        String name,
                        String signature,
                        String superName,
                        String[] interfaces)
```
    从类复制的说明: ClassVisitor
    
    Visits the header of the class.
    
    覆盖:
    
    visit 在类中 ClassVisitor
    
    参数:
    
    version - the class version. The minor version is stored in the 16 most significant bits, and the major version in the 16 least significant bits.
    
    access - the class's access flags (see Opcodes). This parameter also indicates if the class is deprecated Opcodes.ACC_DEPRECATED or a record Opcodes.ACC_RECORD.
    
    name - the internal name of the class (see Type.getInternalName()).
    
    signature - the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.
    
    superName - the internal of name of the super class (see Type.getInternalName()). For interfaces, the super class is Object. May be null, but only for the Object class.
    
    interfaces - the internal names of the class's interfaces (see Type.getInternalName()). May be null.
  - visitSource
```
public final void visitSource(String file,
                              String debug)
```
    从类复制的说明: ClassVisitor
    
    Visits the source of the class.
    
    覆盖:
    
    visitSource 在类中 ClassVisitor
    
    参数:
    
    file - the name of the source file from which the class was compiled. May be null.
    
    debug - additional debug information to compute the correspondence between source and compiled elements of the class. May be null.
  - visitModule
```
public final ModuleVisitor visitModule(String name,
                                       int access,
                                       String version)
```
    从类复制的说明: ClassVisitor
    
    Visit the module corresponding to the class.
    
    覆盖:
    
    visitModule 在类中 ClassVisitor
    
    参数:
    
    name - the fully qualified name (using dots) of the module.
    
    access - the module access flags, among ACC_OPEN, ACC_SYNTHETIC and ACC_MANDATED.
    
    version - the module version, or null.
    
    返回:
    
    a visitor to visit the module values, or null if this visitor is not interested in visiting this module.
  - visitNestHost
```
public final void visitNestHost(String nestHost)
```
    从类复制的说明: ClassVisitor
    
    Visits the nest host class of the class. A nest is a set of classes of the same package that share access to their private members. One of these classes, called the host, lists the other members of the nest, which in turn should link to the host of their nest. This method must be called only once and only if the visited class is a non-host member of a nest. A class is implicitly its own nest, so it's invalid to call this method with the visited class name as argument.
    
    覆盖:
    
    visitNestHost 在类中 ClassVisitor
    
    参数:
    
    nestHost - the internal name of the host class of the nest.
  - visitOuterClass
```
public final void visitOuterClass(String owner,
                                  String name,
                                  String descriptor)
```
    从类复制的说明: ClassVisitor
    
    Visits the enclosing class of the class. This method must be called only if the class has an enclosing class.
    
    覆盖:
    
    visitOuterClass 在类中 ClassVisitor
    
    参数:
    
    owner - internal name of the enclosing class of the class.
    
    name - the name of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.
    
    descriptor - the descriptor of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.
  - visitAnnotation
```
public final AnnotationVisitor visitAnnotation(String descriptor,
                                               boolean visible)
```
    从类复制的说明: ClassVisitor
    
    Visits an annotation of the class.
    
    覆盖:
    
    visitAnnotation 在类中 ClassVisitor
    
    参数:
    
    descriptor - the class descriptor of the annotation class.
    
    visible - true if the annotation is visible at runtime.
    
    返回:
    
    a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
  - visitTypeAnnotation
```
public final AnnotationVisitor visitTypeAnnotation(int typeRef,
                                                   TypePath typePath,
                                                   String descriptor,
                                                   boolean visible)
```
    从类复制的说明: ClassVisitor
    
    Visits an annotation on a type in the class signature.
    
    覆盖:
    
    visitTypeAnnotation 在类中 ClassVisitor
    
    参数:
    
    typeRef - a reference to the annotated type. The sort of this type reference must be TypeReference.CLASS_TYPE_PARAMETER, TypeReference.CLASS_TYPE_PARAMETER_BOUND or TypeReference.CLASS_EXTENDS. See TypeReference.
    
    typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.
    
    descriptor - the class descriptor of the annotation class.
    
    visible - true if the annotation is visible at runtime.
    
    返回:
    
    a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
  - visitAttribute
```
public final void visitAttribute(Attribute attribute)
```
    从类复制的说明: ClassVisitor
    
    Visits a non standard attribute of the class.
    
    覆盖:
    
    visitAttribute 在类中 ClassVisitor
    
    参数:
    
    attribute - an attribute.
  - visitNestMember
```
public final void visitNestMember(String nestMember)
```
    从类复制的说明: ClassVisitor
    
    Visits a member of the nest. A nest is a set of classes of the same package that share access to their private members. One of these classes, called the host, lists the other members of the nest, which in turn should link to the host of their nest. This method must be called only if the visited class is the host of a nest. A nest host is implicitly a member of its own nest, so it's invalid to call this method with the visited class name as argument.
    
    覆盖:
    
    visitNestMember 在类中 ClassVisitor
    
    参数:
    
    nestMember - the internal name of a nest member.
  - visitPermittedSubclass
```
public final void visitPermittedSubclass(String permittedSubclass)
```
    从类复制的说明: ClassVisitor
    
    Visits a permitted subclasses. A permitted subclass is one of the allowed subclasses of the current class.
    
    覆盖:
    
    visitPermittedSubclass 在类中 ClassVisitor
    
    参数:
    
    permittedSubclass - the internal name of a permitted subclass.
  - visitInnerClass
```
public final void visitInnerClass(String name,
                                  String outerName,
                                  String innerName,
                                  int access)
```
    从类复制的说明: ClassVisitor
    
    Visits information about an inner class. This inner class is not necessarily a member of the class being visited.
    
    覆盖:
    
    visitInnerClass 在类中 ClassVisitor
    
    参数:
    
    name - the internal name of an inner class (see Type.getInternalName()).
    
    outerName - the internal name of the class to which the inner class belongs (see Type.getInternalName()). May be null for not member classes.
    
    innerName - the (simple) name of the inner class inside its enclosing class. May be null for anonymous inner classes.
    
    access - the access flags of the inner class as originally declared in the enclosing class.
  - visitRecordComponent
```
public final RecordComponentVisitor visitRecordComponent(String name,
                                                         String descriptor,
                                                         String signature)
```
    从类复制的说明: ClassVisitor
    
    Visits a record component of the class.
    
    覆盖:
    
    visitRecordComponent 在类中 ClassVisitor
    
    参数:
    
    name - the record component name.
    
    descriptor - the record component descriptor (see Type).
    
    signature - the record component signature. May be null if the record component type does not use generic types.
    
    返回:
    
    a visitor to visit this record component annotations and attributes, or null if this class visitor is not interested in visiting these annotations and attributes.
  - visitField
```
public final FieldVisitor visitField(int access,
                                     String name,
                                     String descriptor,
                                     String signature,
                                     Object value)
```
    从类复制的说明: ClassVisitor
    
    Visits a field of the class.
    
    覆盖:
    
    visitField 在类中 ClassVisitor
    
    参数:
    
    access - the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.
    
    name - the field's name.
    
    descriptor - the field's descriptor (see Type).
    
    signature - the field's signature. May be null if the field's type does not use generic types.
    
    value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String (for int, float, long or String fields respectively). This parameter is only used for static fields. Its value is ignored for non static fields, which must be initialized through bytecode instructions in constructors or methods.
    
    返回:
    
    a visitor to visit field annotations and attributes, or null if this class visitor is not interested in visiting these annotations and attributes.
  - visitMethod
```
public final MethodVisitor visitMethod(int access,
                                       String name,
                                       String descriptor,
                                       String signature,
                                       String[] exceptions)
```
    从类复制的说明: ClassVisitor
    
    Visits a method of the class. This method must return a new MethodVisitor instance (or null) each time it is called, i.e., it should not return a previously returned visitor.
    
    覆盖:
    
    visitMethod 在类中 ClassVisitor
    
    参数:
    
    access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.
    
    name - the method's name.
    
    descriptor - the method's descriptor (see Type).
    
    signature - the method's signature. May be null if the method parameters, return type and exceptions do not use generic types.
    
    exceptions - the internal names of the method's exception classes (see Type.getInternalName()). May be null.
    
    返回:
    
    an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.
  - visitEnd
```
public final void visitEnd()
```
    从类复制的说明: ClassVisitor
    
    Visits the end of the class. This method, which is the last one to be called, is used to inform the visitor that all the fields and methods of the class have been visited.
    
    覆盖:
    
    visitEnd 在类中 ClassVisitor
  - toByteArray
```
public byte[] toByteArray()
```
    Returns the content of the class file that was built by this ClassWriter.
    
    返回:
    
    the binary content of the JVMS ClassFile structure that was built by this ClassWriter.
    
    抛出:
    
    ClassTooLargeException - if the constant pool of the class is too large.
    
    MethodTooLargeException - if the Code attribute of a method is too large.
  - replaceAsmInstructions
```
private byte[] replaceAsmInstructions(byte[] classFile,
                                      boolean hasFrames)
```
    Returns the equivalent of the given class file, with the ASM specific instructions replaced with standard ones. This is done with a ClassReader -> ClassWriter round trip.
    
    参数:
    
    classFile - a class file containing ASM specific instructions, generated by this ClassWriter.
    
    hasFrames - whether there is at least one stack map frames in 'classFile'.
    
    返回:
    
    an equivalent of 'classFile', with the ASM specific instructions replaced with standard ones.
  - getAttributePrototypes
```
private Attribute[] getAttributePrototypes()
```
    Returns the prototypes of the attributes used by this class, its fields and its methods.
    
    返回:
    
    the prototypes of the attributes used by this class, its fields and its methods.
  - newConst
```
public int newConst(Object value)
```
    Adds a number or string constant to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    value - the value of the constant to be added to the constant pool. This parameter must be an Integer, a Float, a Long, a Double or a String.
    
    返回:
    
    the index of a new or already existing constant item with the given value.
  - newUTF8
```
public int newUTF8(String value)
```
    Adds an UTF8 string to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    value - the String value.
    
    返回:
    
    the index of a new or already existing UTF8 item.
  - newClass
```
public int newClass(String value)
```
    Adds a class reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    value - the internal name of the class.
    
    返回:
    
    the index of a new or already existing class reference item.
  - newMethodType
```
public int newMethodType(String methodDescriptor)
```
    Adds a method type reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    methodDescriptor - method descriptor of the method type.
    
    返回:
    
    the index of a new or already existing method type reference item.
  - newModule
```
public int newModule(String moduleName)
```
    Adds a module reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    moduleName - name of the module.
    
    返回:
    
    the index of a new or already existing module reference item.
  - newPackage
```
public int newPackage(String packageName)
```
    Adds a package reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    packageName - name of the package in its internal form.
    
    返回:
    
    the index of a new or already existing module reference item.
  - newHandle
```
@Deprecated
public int newHandle(int tag,
                                 String owner,
                                 String name,
                                 String descriptor)
```
    已过时。 this method is superseded by newHandle(int, String, String, String, boolean).
    
    Adds a handle to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    tag - the kind of this handle. Must be Opcodes.H_GETFIELD, Opcodes.H_GETSTATIC, Opcodes.H_PUTFIELD, Opcodes.H_PUTSTATIC, Opcodes.H_INVOKEVIRTUAL, Opcodes.H_INVOKESTATIC, Opcodes.H_INVOKESPECIAL, Opcodes.H_NEWINVOKESPECIAL or Opcodes.H_INVOKEINTERFACE.
    
    owner - the internal name of the field or method owner class.
    
    name - the name of the field or method.
    
    descriptor - the descriptor of the field or method.
    
    返回:
    
    the index of a new or already existing method type reference item.
  - newHandle
```
public int newHandle(int tag,
                     String owner,
                     String name,
                     String descriptor,
                     boolean isInterface)
```
    Adds a handle to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    tag - the kind of this handle. Must be Opcodes.H_GETFIELD, Opcodes.H_GETSTATIC, Opcodes.H_PUTFIELD, Opcodes.H_PUTSTATIC, Opcodes.H_INVOKEVIRTUAL, Opcodes.H_INVOKESTATIC, Opcodes.H_INVOKESPECIAL, Opcodes.H_NEWINVOKESPECIAL or Opcodes.H_INVOKEINTERFACE.
    
    owner - the internal name of the field or method owner class.
    
    name - the name of the field or method.
    
    descriptor - the descriptor of the field or method.
    
    isInterface - true if the owner is an interface.
    
    返回:
    
    the index of a new or already existing method type reference item.
  - newConstantDynamic
```
public int newConstantDynamic(String name,
                              String descriptor,
                              Handle bootstrapMethodHandle,
                              Object... bootstrapMethodArguments)
```
    Adds a dynamic constant reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    name - name of the invoked method.
    
    descriptor - field descriptor of the constant type.
    
    bootstrapMethodHandle - the bootstrap method.
    
    bootstrapMethodArguments - the bootstrap method constant arguments.
    
    返回:
    
    the index of a new or already existing dynamic constant reference item.
  - newInvokeDynamic
```
public int newInvokeDynamic(String name,
                            String descriptor,
                            Handle bootstrapMethodHandle,
                            Object... bootstrapMethodArguments)
```
    Adds an invokedynamic reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    name - name of the invoked method.
    
    descriptor - descriptor of the invoke method.
    
    bootstrapMethodHandle - the bootstrap method.
    
    bootstrapMethodArguments - the bootstrap method constant arguments.
    
    返回:
    
    the index of a new or already existing invokedynamic reference item.
  - newField
```
public int newField(String owner,
                    String name,
                    String descriptor)
```
    Adds a field reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    owner - the internal name of the field's owner class.
    
    name - the field's name.
    
    descriptor - the field's descriptor.
    
    返回:
    
    the index of a new or already existing field reference item.
  - newMethod
```
public int newMethod(String owner,
                     String name,
                     String descriptor,
                     boolean isInterface)
```
    Adds a method reference to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    owner - the internal name of the method's owner class.
    
    name - the method's name.
    
    descriptor - the method's descriptor.
    
    isInterface - true if owner is an interface.
    
    返回:
    
    the index of a new or already existing method reference item.
  - newNameType
```
public int newNameType(String name,
                       String descriptor)
```
    Adds a name and type to the constant pool of the class being build. Does nothing if the constant pool already contains a similar item. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
    
    参数:
    
    name - a name.
    
    descriptor - a type descriptor.
    
    返回:
    
    the index of a new or already existing name and type item.
  - getCommonSuperClass
```
protected String getCommonSuperClass(String type1,
                                     String type2)
```
    Returns the common super type of the two given types. The default implementation of this method loads the two given classes and uses the java.lang.Class methods to find the common super class. It can be overridden to compute this common super type in other ways, in particular without actually loading any class, or to take into account the class that is currently being generated by this ClassWriter, which can of course not be loaded since it is under construction.
    
    参数:
    
    type1 - the internal name of a class.
    
    type2 - the internal name of another class.
    
    返回:
    
    the internal name of the common super class of the two given classes.
  - getClassLoader
```
protected ClassLoader getClassLoader()
```
    Returns the ClassLoader to be used by the default implementation of getCommonSuperClass(String, String), that of this ClassWriter's runtime type by default.
    
    返回:
    
    ClassLoader

类 ClassWriter

字段概要

从类继承的字段 com.fastchar.asm.org.objectweb.ClassVisitor

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

COMPUTE_MAXS

COMPUTE_FRAMES

version

symbolTable

accessFlags

thisClass

superClass

interfaceCount

interfaces

firstField

lastField

firstMethod

lastMethod

numberOfInnerClasses

innerClasses

enclosingClassIndex

enclosingMethodIndex

signatureIndex

sourceFileIndex

debugExtension

lastRuntimeVisibleAnnotation

lastRuntimeInvisibleAnnotation

lastRuntimeVisibleTypeAnnotation

lastRuntimeInvisibleTypeAnnotation

moduleWriter

nestHostClassIndex

numberOfNestMemberClasses

nestMemberClasses

numberOfPermittedSubclasses

permittedSubclasses

firstRecordComponent

lastRecordComponent

firstAttribute

compute

构造器详细资料

ClassWriter

ClassWriter

方法详细资料

visit

visitSource

visitModule

visitNestHost

visitOuterClass

visitAnnotation

visitTypeAnnotation

visitAttribute

visitNestMember

visitPermittedSubclass

visitInnerClass

visitRecordComponent

visitField

visitMethod

visitEnd

toByteArray

replaceAsmInstructions

getAttributePrototypes

newConst

newUTF8

newClass

newMethodType

newModule

newPackage

newHandle

newHandle

newConstantDynamic

newInvokeDynamic

newField

newMethod

newNameType

getCommonSuperClass

getClassLoader