EasyMock 5.2.0 · org.easymock.asm

Provides a small and fast bytecode manipulation framework.

The ASM framework is organized around the ClassVisitor, FieldVisitor, MethodVisitor and AnnotationVisitor abstract classes, which allow one to visit the fields, methods and annotations of a class, including the bytecode instructions of each method.

In addition to these main abstract classes, ASM provides a ClassReader class, that can parse an existing class and make a given visitor visit it. ASM also provides a ClassWriter class, which is a visitor that generates Java class files.

In order to generate a class from scratch, only the ClassWriter class is necessary. Indeed, in order to generate a class, one must just call its visitXxx methods with the appropriate arguments to generate the desired fields and methods.

In order to modify existing classes, one must use a ClassReader class to analyze the original class, a class modifier, and a ClassWriter to construct the modified class. The class modifier is just a ClassVisitor that delegates most of the work to another ClassVisitor, but that sometimes changes some parameter values, or call additional methods, in order to implement the desired modification process. In order to make it easier to implement such class modifiers, the ClassVisitor and MethodVisitor classes delegate by default all the method calls they receive to an optional visitor.

Modifier and Type	Interface and Description
public interface	Opcodes The JVM opcodes, access flags and array type codes.

Class Summary

Modifier and Type	Class and Description
public abstract class	AnnotationVisitor A visitor to visit a Java annotation.
pack-priv class	AnnotationWriter An `AnnotationVisitor` that generates a corresponding 'annotation' or 'type_annotation' structure, as defined in the Java Virtual Machine Specification (JVMS).
public class	Attribute A non standard class, field, method or Code attribute, as defined in the Java Virtual Machine Specification (JVMS).
public class	ByteVector A dynamically extensible vector of bytes.
public class	ClassReader A parser to make a `ClassVisitor` visit a ClassFile structure, as defined in the Java Virtual Machine Specification (JVMS).
public class	ClassTooLargeException Exception thrown when the constant pool of a class produced by a `ClassWriter` is too large.
public abstract class	ClassVisitor A visitor to visit a Java class.
public class	ClassWriter A `ClassVisitor` that generates a corresponding ClassFile structure, as defined in the Java Virtual Machine Specification (JVMS).
public class	ConstantDynamic A constant whose value is computed at runtime, with a bootstrap method.
pack-priv class	Constants Defines additional JVM opcodes, access flags and constants which are not part of the ASM public API.
pack-priv class	Context Information about a class being parsed in a `ClassReader`.
pack-priv class	CurrentFrame Information about the input stack map frame at the "current" instruction of a method.
pack-priv class	Edge An edge in the control flow graph of a method.
public abstract class	FieldVisitor A visitor to visit a Java field.
pack-priv class	FieldWriter A `FieldVisitor` that generates a corresponding 'field_info' structure, as defined in the Java Virtual Machine Specification (JVMS).
pack-priv class	Frame The input and output stack map frames of a basic block.
public class	Handle A reference to a field or a method.
pack-priv class	Handler Information about an exception handler.
public class	Label A position in the bytecode of a method.
public class	MethodTooLargeException Exception thrown when the Code attribute of a method produced by a `ClassWriter` is too large.
public abstract class	MethodVisitor A visitor to visit a Java method.
pack-priv class	MethodWriter A `MethodVisitor` that generates a corresponding 'method_info' structure, as defined in the Java Virtual Machine Specification (JVMS).
public abstract class	ModuleVisitor A visitor to visit a Java module.
pack-priv class	ModuleWriter A `ModuleVisitor` that generates the corresponding Module, ModulePackages and ModuleMainClass attributes, as defined in the Java Virtual Machine Specification (JVMS).
public abstract class	RecordComponentVisitor A visitor to visit a record component.
pack-priv class	RecordComponentWriter
pack-priv abstract class	Symbol An entry of the constant pool, of the BootstrapMethods attribute, or of the (ASM specific) type table of a class.
pack-priv class	SymbolTable The constant pool entries, the BootstrapMethods attribute entries and the (ASM specific) type table entries of a class.
public class	Type A Java field or method type.
public class	TypePath The path to a type argument, wildcard bound, array element type, or static inner type within an enclosing type.
public class	TypeReference A reference to a type appearing in a class, field or method declaration, or on an instruction.

Package org.easymock.asm

Interface Summary

Class Summary