Jython 2.7.4 · org.python.core.AnnotationReader · APIdia, the JavaDoc alternative

This class reads a classfile from a byte array and pulls out the value of the class annotation for APIVersion, which can then be retrieved by a call to getVersion(). Hopefully the use of ClassReader in this implementation is not too expensive. I suspect it is not since EmptyVisitor is just a bag of empty methods so shouldn't cost too much. If it turns out to cost too much, we will want to implement a special purpose ClassReader that only reads out the APIVersion annotation I think.

Field Summary

Modifier and Type	Field and Description
private String	filename
private long	mtime
private boolean	nextVisitIsFilename
private boolean	nextVisitIsMTime
private boolean	nextVisitIsVersion
private int	version

Inherited from org.objectweb.asm.ClassVisitor:: api cv

Constructor Summary

Access	Constructor and Description
public	AnnotationReader(byte[] data) Reads the classfile bytecode in data and to extract the version.

Method Summary

Modifier and Type	Method and Description
public String	getFilename()
public long	getMTime()
public int	getVersion()
public AnnotationVisitor	visitAnnotation(String the class descriptor of the annotation class. desc, boolean true if the annotation is visible at runtime. visible) Overrides org.objectweb.asm.ClassVisitor.visitAnnotation. Visits an annotation of the class.

Inherited from org.objectweb.asm.ClassVisitor:: getDelegate visit visitAttribute visitEnd visitField visitInnerClass visitMethod visitModule visitNestHost visitNestMember visitOuterClass visitPermittedSubclass visitRecordComponent visitSource visitTypeAnnotation

Field Detail

filename	back to summary
private String filename

mtime	back to summary
private long mtime

nextVisitIsFilename	back to summary
private boolean nextVisitIsFilename

nextVisitIsMTime	back to summary
private boolean nextVisitIsMTime

nextVisitIsVersion	back to summary
private boolean nextVisitIsVersion

version	back to summary
private int version

Constructor Detail

AnnotationReader	back to summary
public AnnotationReader(byte[] data) throws IOException Reads the classfile bytecode in data and to extract the version. Exceptions IOException: - if the classfile is malformed.

AnnotationReader

back to summary

public AnnotationReader(byte[] data) throws IOException

Reads the classfile bytecode in data and to extract the version.

Exceptions

IOException:: - if the classfile is malformed.

Method Detail

getFilename	back to summary
public String getFilename()

getMTime	back to summary
public long getMTime()

getVersion	back to summary
public int getVersion()

visitAnnotation	back to summary
public AnnotationVisitor visitAnnotation(String desc, boolean visible) Overrides org.objectweb.asm.ClassVisitor.visitAnnotation. Doc from org.objectweb.asm.ClassVisitor.visitAnnotation. Visits an annotation of the class. Parameters desc:String the class descriptor of the annotation class. visible:boolean true if the annotation is visible at runtime. Returns:AnnotationVisitor a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation. Annotations @Override

visitAnnotation

back to summary

public AnnotationVisitor visitAnnotation(String desc, boolean visible)

Overrides org.objectweb.asm.ClassVisitor.visitAnnotation.

Doc from org.objectweb.asm.ClassVisitor.visitAnnotation.

Visits an annotation of the class.

Parameters

desc:String: the class descriptor of the annotation class.
visible:boolean: true if the annotation is visible at runtime.

Returns:AnnotationVisitor

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

Annotations