org.jenkinsci.constant_pool_scanner

Class ConstantPoolScanner

java.lang.Object

org.jenkinsci.constant_pool_scanner.ConstantPoolScanner

public class ConstantPoolScanner
extends Object

Streaming parser of the constant pool in a Java class file. This might be used for dependency analysis, class loader optimizations, etc.

See Also:

original sources

Method Summary

Methods

Modifier and Type	Method and Description
static Set<String>	dependencies(byte[] data) Examines the constant pool of a class file and looks for references to other classes.
static Set<String>	dependencies(InputStream in) Examines the constant pool of a class file and looks for references to other classes.
static ConstantPool	parse(byte[] source, ConstantType... types) Parses a class file and invokes the visitor with constants.
static ConstantPool	parse(DataInput s, Collection<ConstantType> _collect) Parses a class file and invokes the visitor with constants.
static ConstantPool	parse(InputStream source, ConstantType... types) Parses a class file and invokes the visitor with constants.

Methods inherited from class java.lang.Object

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

Method Detail

dependencies

public static Set<String> dependencies(byte[] data)
                                throws IOException

Examines the constant pool of a class file and looks for references to other classes.

Parameters:

data - a Java class file

Returns:

a (sorted) set of binary class names (e.g. some.pkg.Outer$Inner)

Throws:

IOException - in case of malformed bytecode

dependencies

public static Set<String> dependencies(InputStream in)
                                throws IOException

Examines the constant pool of a class file and looks for references to other classes.

Parameters:

in - Stream that reads a Java class file

Returns:

a (sorted) set of binary class names (e.g. some.pkg.Outer$Inner)

Throws:

IOException - in case of malformed bytecode

parse

public static ConstantPool parse(byte[] source,
                 ConstantType... types)
                          throws IOException

Parses a class file and invokes the visitor with constants.

Throws:

IOException

parse

public static ConstantPool parse(InputStream source,
                 ConstantType... types)
                          throws IOException

Parses a class file and invokes the visitor with constants.

Throws:

IOException

parse

public static ConstantPool parse(DataInput s,
                 Collection<ConstantType> _collect)
                          throws IOException

Parses a class file and invokes the visitor with constants.

Throws:

IOException