com.ea.orbit.async.instrumentation

Class Transformer

java.lang.Object

com.ea.orbit.async.instrumentation.Transformer

All Implemented Interfaces:

ClassFileTransformer

public class Transformer
extends Object
implements ClassFileTransformer

Internal class to modify the bytecodes of async-await methods to make them behave in the expected fashion.

Author:

Daniel Sperry

Field Summary

Fields

Modifier and Type	Field and Description
static String	AWAIT_METHOD_DESC
static String	AWAIT_METHOD_NAME

Constructor Summary

Constructors

Constructor and Description
Transformer()

Method Summary

Modifier and Type	Method and Description
byte[]	instrument(InputStream inputStream)
byte[]	transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer)
byte[]	transform(org.objectweb.asm.ClassReader cr) Does the actual instrumentation generating new bytecode

Methods inherited from class java.lang.Object

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

Field Detail

AWAIT_METHOD_DESC

public static final String AWAIT_METHOD_DESC

See Also:

Constant Field Values

AWAIT_METHOD_NAME

public static final String AWAIT_METHOD_NAME

See Also:

Constant Field Values

Constructor Detail

Transformer

public Transformer()

Method Detail

transform

public byte[] transform(ClassLoader loader,
                        String className,
                        Class<?> classBeingRedefined,
                        ProtectionDomain protectionDomain,
                        byte[] classfileBuffer)
                 throws IllegalClassFormatException

Specified by:

transform in interface ClassFileTransformer

Throws:

IllegalClassFormatException

instrument

public byte[] instrument(InputStream inputStream)

transform

public byte[] transform(org.objectweb.asm.ClassReader cr)
                 throws org.objectweb.asm.tree.analysis.AnalyzerException

Does the actual instrumentation generating new bytecode

Parameters:

cr - the class reader for this class

Returns:

null or the new class bytes

Throws:

org.objectweb.asm.tree.analysis.AnalyzerException