Package scala.tools.asm.tree

Class ClassNode

java.lang.Object

scala.tools.asm.ClassVisitor

scala.tools.asm.tree.ClassNode

public class ClassNode
extends ClassVisitor

A node that represents a class.

Field Summary

Fields

Modifier and Type	Field	Description
int	access	The class's access flags (see Opcodes).
java.util.List<Attribute>	attrs	The non standard attributes of this class.
java.util.List<FieldNode>	fields	The fields of this class.
java.util.List<InnerClassNode>	innerClasses	The inner classes of this class.
java.util.List<java.lang.String>	interfaces	The internal names of the interfaces directly implemented by this class (see Type.getInternalName()).
java.util.List<AnnotationNode>	invisibleAnnotations	The runtime invisible annotations of this class.
java.util.List<TypeAnnotationNode>	invisibleTypeAnnotations	The runtime invisible type annotations of this class.
java.util.List<MethodNode>	methods	The methods of this class.
ModuleNode	module	The module stored in this class.
java.lang.String	name	The internal name of this class (see Type.getInternalName()).
java.lang.String	nestHostClassExperimental	Experimental, use at your own risk.
java.util.List<java.lang.String>	nestMembersExperimental	Experimental, use at your own risk.
java.lang.String	outerClass	The internal name of the enclosing class of this class.
java.lang.String	outerMethod	The name of the method that contains this class, or null if this class is not enclosed in a method.
java.lang.String	outerMethodDesc	The descriptor of the method that contains this class, or null if this class is not enclosed in a method.
java.lang.String	signature	The signature of this class.
java.lang.String	sourceDebug	The correspondence between source and compiled elements of this class.
java.lang.String	sourceFile	The name of the source file from which this class was compiled.
java.lang.String	superName	The internal of name of the super class (see Type.getInternalName()).
int	version	The class version.
java.util.List<AnnotationNode>	visibleAnnotations	The runtime visible annotations of this class.
java.util.List<TypeAnnotationNode>	visibleTypeAnnotations	The runtime visible type annotations of this class.

Fields inherited from class scala.tools.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

Constructor	Description
ClassNode()	Constructs a new ClassNode.
ClassNode(int api)	Constructs a new ClassNode.

Method Summary

Modifier and Type	Method	Description
void	accept(ClassVisitor classVisitor)	Makes the given class visitor visit this class.
void	check(int api)	Checks that this class node is compatible with the given ASM API version.
void	visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)	Visits the header of the class.
AnnotationVisitor	visitAnnotation(java.lang.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, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.Object value)	Visits a field of the class.
void	visitInnerClass(java.lang.String name, java.lang.String outerName, java.lang.String innerName, int access)	Visits information about an inner class.
MethodVisitor	visitMethod(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)	Visits a method of the class.
ModuleVisitor	visitModule(java.lang.String name, int access, java.lang.String version)	Visit the module corresponding to the class.
void	visitNestHostExperimental(java.lang.String nestHost)	Experimental, use at your own risk.
void	visitNestMemberExperimental(java.lang.String nestMember)	Experimental, use at your own risk.
void	visitOuterClass(java.lang.String owner, java.lang.String name, java.lang.String descriptor)	Visits the enclosing class of the class.
void	visitSource(java.lang.String file, java.lang.String debug)	Visits the source of the class.
AnnotationVisitor	visitTypeAnnotation(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)	Visits an annotation on a type in the class signature.

Methods inherited from class java.lang.Object

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

Field Detail

version

public int 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

public int access

The class's access flags (see Opcodes). This field also indicates if the class is deprecated.

name

public java.lang.String name

The internal name of this class (see Type.getInternalName()).

signature

public java.lang.String signature

The signature of this class. May be null.

superName

public java.lang.String 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

public java.util.List<java.lang.String> interfaces

The internal names of the interfaces directly implemented by this class (see Type.getInternalName()).

sourceFile

public java.lang.String sourceFile

The name of the source file from which this class was compiled. May be null.

sourceDebug

public java.lang.String sourceDebug

The correspondence between source and compiled elements of this class. May be null.

module

public ModuleNode module

The module stored in this class. May be null.

outerClass

public java.lang.String outerClass

The internal name of the enclosing class of this class. May be null.

outerMethod

public java.lang.String outerMethod

The name of the method that contains this class, or null if this class is not enclosed in a method.

outerMethodDesc

public java.lang.String outerMethodDesc

The descriptor of the method that contains this class, or null if this class is not enclosed in a method.

visibleAnnotations

public java.util.List<AnnotationNode> visibleAnnotations

The runtime visible annotations of this class. May be null.

invisibleAnnotations

public java.util.List<AnnotationNode> invisibleAnnotations

The runtime invisible annotations of this class. May be null.

visibleTypeAnnotations

public java.util.List<TypeAnnotationNode> visibleTypeAnnotations

The runtime visible type annotations of this class. May be null.

invisibleTypeAnnotations

public java.util.List<TypeAnnotationNode> invisibleTypeAnnotations

The runtime invisible type annotations of this class. May be null.

attrs

public java.util.List<Attribute> attrs

The non standard attributes of this class. May be null.

innerClasses

public java.util.List<InnerClassNode> innerClasses

The inner classes of this class.

nestHostClassExperimental

public java.lang.String nestHostClassExperimental

Experimental, use at your own risk. This field will be renamed when it becomes stable, this will break existing code using it. The internal name of the nest host class of this class. May be null.

nestMembersExperimental

public java.util.List<java.lang.String> nestMembersExperimental

Experimental, use at your own risk. This field will be renamed when it becomes stable, this will break existing code using it. The internal names of the nest members of this class. May be null.

fields

public java.util.List<FieldNode> fields

The fields of this class.

methods

public java.util.List<MethodNode> methods

The methods of this class.

Constructor Detail

ClassNode

public ClassNode()

Constructs a new ClassNode. Subclasses must not use this constructor. Instead, they must use the ClassNode(int) version.

Throws:

java.lang.IllegalStateException - If a subclass calls this constructor.

ClassNode

public ClassNode(int api)

Constructs a new ClassNode.

Parameters:

api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4, Opcodes.ASM5, Opcodes.ASM6 or Opcodes.ASM7_EXPERIMENTAL.

Method Detail

visit

public void visit(int version,
                  int access,
                  java.lang.String name,
                  java.lang.String signature,
                  java.lang.String superName,
                  java.lang.String[] interfaces)

Description copied from class: ClassVisitor

Visits the header of the class.

Overrides:

visit in class ClassVisitor

Parameters:

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.

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 void visitSource(java.lang.String file,
                        java.lang.String debug)

Description copied from class: ClassVisitor

Visits the source of the class.

Overrides:

visitSource in class ClassVisitor

Parameters:

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 ModuleVisitor visitModule(java.lang.String name,
                                 int access,
                                 java.lang.String version)

Description copied from class: ClassVisitor

Visit the module corresponding to the class.

Overrides:

visitModule in class ClassVisitor

Parameters:

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.

Returns:

a visitor to visit the module values, or null if this visitor is not interested in visiting this module.

visitNestHostExperimental

public void visitNestHostExperimental(java.lang.String nestHost)

Description copied from class: ClassVisitor

Experimental, use at your own risk. This method will be renamed when it becomes stable, this will break existing code using it. 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.

Overrides:

visitNestHostExperimental in class ClassVisitor

Parameters:

nestHost - the internal name of the host class of the nest.

visitOuterClass

public void visitOuterClass(java.lang.String owner,
                            java.lang.String name,
                            java.lang.String descriptor)

Description copied from class: ClassVisitor

Visits the enclosing class of the class. This method must be called only if the class has an enclosing class.

Overrides:

visitOuterClass in class ClassVisitor

Parameters:

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 AnnotationVisitor visitAnnotation(java.lang.String descriptor,
                                         boolean visible)

Description copied from class: ClassVisitor

Visits an annotation of the class.

Overrides:

visitAnnotation in class ClassVisitor

Parameters:

descriptor - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

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,
                                             java.lang.String descriptor,
                                             boolean visible)

Description copied from class: ClassVisitor

Visits an annotation on a type in the class signature.

Overrides:

visitTypeAnnotation in class ClassVisitor

Parameters:

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.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitAttribute

public void visitAttribute(Attribute attribute)

Description copied from class: ClassVisitor

Visits a non standard attribute of the class.

Overrides:

visitAttribute in class ClassVisitor

Parameters:

attribute - an attribute.

visitNestMemberExperimental

public void visitNestMemberExperimental(java.lang.String nestMember)

Description copied from class: ClassVisitor

Experimental, use at your own risk. This method will be renamed when it becomes stable, this will break existing code using it. 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.

Overrides:

visitNestMemberExperimental in class ClassVisitor

Parameters:

nestMember - the internal name of a nest member.

visitInnerClass

public void visitInnerClass(java.lang.String name,
                            java.lang.String outerName,
                            java.lang.String innerName,
                            int access)

Description copied from class: ClassVisitor

Visits information about an inner class. This inner class is not necessarily a member of the class being visited.

Overrides:

visitInnerClass in class ClassVisitor

Parameters:

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.

visitField

public FieldVisitor visitField(int access,
                               java.lang.String name,
                               java.lang.String descriptor,
                               java.lang.String signature,
                               java.lang.Object value)

Description copied from class: ClassVisitor

Visits a field of the class.

Overrides:

visitField in class ClassVisitor

Parameters:

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.

Returns:

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,
                                 java.lang.String name,
                                 java.lang.String descriptor,
                                 java.lang.String signature,
                                 java.lang.String[] exceptions)

Description copied from class: 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.

Overrides:

visitMethod in class ClassVisitor

Parameters:

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.

Returns:

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()

Description copied from class: 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.

Overrides:

visitEnd in class ClassVisitor

check

public void check(int api)

Checks that this class node is compatible with the given ASM API version. This method checks that this node, and all its children recursively, do not contain elements that were introduced in more recent versions of the ASM API than the given version.

Parameters:

api - an ASM API version. Must be one of Opcodes.ASM4, Opcodes.ASM5, Opcodes.ASM6 or Opcodes.ASM7_EXPERIMENTAL.

accept

public void accept(ClassVisitor classVisitor)

Makes the given class visitor visit this class.

Parameters:

classVisitor - a class visitor.