Java字节码操控框架ASM源码Java
文章发布较早，内容可能过时，阅读注意甄别。
# ASM包结构
包结构
- 类
jdk.internal.org.objectweb.asm.ClassReader
/**
* A Java class parser to make a {@link ClassVisitor} visit an existing class.
* This class parses a byte array conforming to the Java class file format and
* calls the appropriate visit methods of a given class visitor for each field,
* method and bytecode instruction encountered.
*
* @author Eric Bruneton
* @author Eugene Kuleshov
*/
public class ClassReader {
1
2
3
4
5
6
7
8
9
10
11
2
3
4
5
6
7
8
9
10
11
- 类
jdk.internal.org.objectweb.asm.ClassVisitor
/**
* A visitor to visit a Java class. The methods of this class must be called in
* the following order: <tt>visit</tt> [ <tt>visitSource</tt> ] [
* <tt>visitOuterClass</tt> ] ( <tt>visitAnnotation</tt> |
* <tt>visitTypeAnnotation</tt> | <tt>visitAttribute</tt> )* (
* <tt>visitInnerClass</tt> | <tt>visitField</tt> | <tt>visitMethod</tt> )*
* <tt>visitEnd</tt>.
*
* @author Eric Bruneton
*/
public abstract class ClassVisitor {
1
2
3
4
5
6
7
8
9
10
11
2
3
4
5
6
7
8
9
10
11
- 类
jdk.internal.org.objectweb.asm.ClassWriter
/**
* A {@link ClassVisitor} that generates classes in bytecode form. More
* precisely this visitor generates a byte array conforming to the Java class
* file format. It can be used alone, to generate a Java class "from scratch",
* or with one or more {@link ClassReader ClassReader} and adapter class visitor
* to generate a modified class from one or more existing Java classes.
*
* @author Eric Bruneton
*/
public class ClassWriter extends ClassVisitor {
1
2
3
4
5
6
7
8
9
10
11
12
2
3
4
5
6
7
8
9
10
11
12
