Package javassist.bytecode

Class BootstrapMethodsAttribute

java.lang.Object

javassist.bytecode.AttributeInfo

javassist.bytecode.BootstrapMethodsAttribute

public class BootstrapMethodsAttribute
extends AttributeInfo

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BootstrapMethodsAttribute.BootstrapMethod	An element of bootstrap_methods.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	tag	The name of this attribute "BootstrapMethods".

Fields inherited from class javassist.bytecode.AttributeInfo

constPool, info, name

Constructor Summary

Constructors

Constructor	Description
BootstrapMethodsAttribute(ConstPool cp, int n, DataInputStream in)
BootstrapMethodsAttribute(ConstPool cp, BootstrapMethodsAttribute.BootstrapMethod[] methods)	Constructs a BootstrapMethods attribute.

Method Summary

Modifier and Type	Method	Description
void	addMethod(ConstPool srcCp, BootstrapMethodsAttribute.BootstrapMethod srcBm, int index, Map<String,String> classnames)	add bootstrap method from given ConstPool and BootstrapMethod, and add it to the specified index.
private static byte[]	convertMethodsToBytes(BootstrapMethodsAttribute.BootstrapMethod[] methods)
AttributeInfo	copy(ConstPool newCp, Map<String,String> classnames)	Makes a copy.
BootstrapMethodsAttribute.BootstrapMethod[]	getMethods()	Obtains bootstrap_methods in this attribute.

Methods inherited from class javassist.bytecode.AttributeInfo

copyAll, get, getConstPool, getLength, getName, getRefClasses, getRefClasses, length, lookup, read, remove, renameClass, renameClass, renameClass, renameClass, set, write, writeAll

Methods inherited from class java.lang.Object

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

Field Details

tag

public static final String tag

The name of this attribute "BootstrapMethods".

See Also:

• Constant Field Values

Constructor Details

BootstrapMethodsAttribute

BootstrapMethodsAttribute(ConstPool cp,
 int n,
 DataInputStream in)
                   throws IOException

Throws:

IOException

BootstrapMethodsAttribute

public BootstrapMethodsAttribute(ConstPool cp,
 BootstrapMethodsAttribute.BootstrapMethod[] methods)

Constructs a BootstrapMethods attribute.

Parameters:

cp - a constant pool table.

methods - the contents.

Method Details

getMethods

public BootstrapMethodsAttribute.BootstrapMethod[] getMethods()

Obtains bootstrap_methods in this attribute.

Returns:

an array of BootstrapMethod. Since it is a fresh copy, modifying the returned array does not affect the original contents of this attribute.

copy

public AttributeInfo copy(ConstPool newCp,
 Map<String,String> classnames)

Makes a copy. Class names are replaced according to the given Map object.

Overrides:

copy in class AttributeInfo

Parameters:

newCp - the constant pool table used by the new copy.

classnames - pairs of replaced and substituted class names.

addMethod

public void addMethod(ConstPool srcCp,
 BootstrapMethodsAttribute.BootstrapMethod srcBm,
 int index,
 Map<String,String> classnames)

add bootstrap method from given ConstPool and BootstrapMethod, and add it to the specified index. Class names are replaced according to the given Map object.

if the index less than 0 or large than the origin method length, then throw RuntimeException;
if the index large or equals to 0 and less or equals to the origin method length, then replace the origin method with the new BootstrapMethod srcBm ;
if the index equals to the origin method length, then append the new BootstrapMethod srcBm at the origin methods tail.

Parameters:

srcCp - the constant pool table of source.

srcBm - the bootstrap method of source

index - the new method index on bootstrap methods

classnames - pairs of replaced and substituted class names.

convertMethodsToBytes

private static byte[] convertMethodsToBytes(BootstrapMethodsAttribute.BootstrapMethod[] methods)