类 ClassVisitor
- java.lang.Object
- org.springframework.asm.ClassVisitor
public abstract class ClassVisitor extends Object
A visitor to visit a Java class. The methods of this class must be called in the following order: visit [ visitSource ] [ visitModule ][ visitOuterClass ] ( visitAnnotation | visitTypeAnnotation | visitAttribute )* ( visitInnerClass | visitField | visitMethod )* visitEnd.- 作者:
- Eric Bruneton
字段概要
字段 修饰符和类型 字段 说明 protected int
api
The ASM API version implemented by this visitor.protected ClassVisitor
cv
The class visitor to which this visitor must delegate method calls.
构造器概要
构造器 构造器 说明 ClassVisitor(int api)
Constructs a newClassVisitor
.ClassVisitor(int api, ClassVisitor cv)
Constructs a newClassVisitor
.
方法概要
所有方法 实例方法 具体方法 修饰符和类型 方法 说明 void
visit(int version, int access, String name, String signature, String superName, String[] interfaces)
Visits the header of the class.AnnotationVisitor
visitAnnotation(String desc, boolean visible)
Visits an annotation of the class.void
visitAttribute(Attribute attr)
Visits a non standard attribute of the class.void
visitEnd()
Visits the end of the class.FieldVisitor
visitField(int access, String name, String desc, 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 desc, 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
visitOuterClass(String owner, String name, String desc)
Visits the enclosing class of the class.void
visitSource(String source, String debug)
Visits the source of the class.AnnotationVisitor
visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Visits an annotation on a type in the class signature.
字段详细资料
api
protected final int api
The ASM API version implemented by this visitor. The value of this field must be one ofOpcodes.ASM4
,Opcodes.ASM5
orOpcodes.ASM6
.
cv
protected ClassVisitor cv
The class visitor to which this visitor must delegate method calls. May be null.
构造器详细资料
ClassVisitor
public ClassVisitor(int api)
Constructs a newClassVisitor
.- 参数:
api
- the ASM API version implemented by this visitor. Must be one ofOpcodes.ASM4
,Opcodes.ASM5
orOpcodes.ASM6
.
ClassVisitor
public ClassVisitor(int api, ClassVisitor cv)
Constructs a newClassVisitor
.- 参数:
api
- the ASM API version implemented by this visitor. Must be one ofOpcodes.ASM4
,Opcodes.ASM5
orOpcodes.ASM6
.cv
- the class visitor to which this visitor must delegate method calls. May be null.
方法详细资料
visit
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces)
Visits the header of the class.- 参数:
version
- the class version.access
- the class's access flags (seeOpcodes
). This parameter also indicates if the class is deprecated.name
- the internal name of the class (seegetInternalName
).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 (seegetInternalName
). For interfaces, the super class isObject
. May be null, but only for theObject
class.interfaces
- the internal names of the class's interfaces (seegetInternalName
). May be null.
visitSource
public void visitSource(String source, String debug)
Visits the source of the class.- 参数:
source
- the name of the source file from which the class was compiled. May be null.debug
- additional debug information to compute the correspondance between source and compiled elements of the class. May be null.
visitModule
public ModuleVisitor visitModule(String name, int access, String version)
Visit the module corresponding to the class.- 参数:
name
- module nameaccess
- module flags, amongACC_OPEN
,ACC_SYNTHETIC
andACC_MANDATED
.version
- 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.
visitOuterClass
public void visitOuterClass(String owner, String name, String desc)
Visits the enclosing class of the class. This method must be called only if the class has an enclosing class.- 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.desc
- 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 AnnotationVisitor visitAnnotation(String desc, boolean visible)
Visits an annotation of the class.- 参数:
desc
- 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 AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Visits an annotation on a type in the class signature.- 参数:
typeRef
- a reference to the annotated type. The sort of this type reference must beCLASS_TYPE_PARAMETER
,CLASS_TYPE_PARAMETER_BOUND
orCLASS_EXTENDS
. SeeTypeReference
.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.desc
- 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 void visitAttribute(Attribute attr)
Visits a non standard attribute of the class.- 参数:
attr
- an attribute.
visitInnerClass
public void visitInnerClass(String name, String outerName, String innerName, int access)
Visits information about an inner class. This inner class is not necessarily a member of the class being visited.- 参数:
name
- the internal name of an inner class (seegetInternalName
).outerName
- the internal name of the class to which the inner class belongs (seegetInternalName
). 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.
visitField
public FieldVisitor visitField(int access, String name, String desc, String signature, Object value)
Visits a field of the class.- 参数:
access
- the field's access flags (seeOpcodes
). This parameter also indicates if the field is synthetic and/or deprecated.name
- the field's name.desc
- the field's descriptor (seeType
).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 anInteger
, aFloat
, aLong
, aDouble
or aString
(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 MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)
Visits a method of the class. This method must return a newMethodVisitor
instance (or null) each time it is called, i.e., it should not return a previously returned visitor.- 参数:
access
- the method's access flags (seeOpcodes
). This parameter also indicates if the method is synthetic and/or deprecated.name
- the method's name.desc
- the method's descriptor (seeType
).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 (seegetInternalName
). 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 void visitEnd()
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.