Java Code Examples for net.bytebuddy.jar.asm.MethodVisitor#visitMethodInsn()
The following examples show how to use
net.bytebuddy.jar.asm.MethodVisitor#visitMethodInsn() .
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Example 1
| Source File: PersistentAttributeTransformer.java From lams with GNU General Public License v2.0 | 6 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod
) {
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + persistentField.getName(),
Type.getMethodDescriptor( Type.getType( persistentField.getType().asErasure().getDescriptor() ) ),
false
);
methodVisitor.visitInsn( Type.getType( persistentField.getType().asErasure().getDescriptor() ).getOpcode( Opcodes.IRETURN ) );
return new Size( persistentField.getType().getStackSize().getSize(), instrumentedMethod.getStackSize() );
}
Example 2
| Source File: PersistentAttributeTransformer.java From lams with GNU General Public License v2.0 | 6 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod
) {
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitVarInsn( Type.getType( persistentField.getType().asErasure().getDescriptor() ).getOpcode( Opcodes.ILOAD ), 1 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + persistentField.getName(),
Type.getMethodDescriptor( Type.getType( void.class ), Type.getType( persistentField.getType().asErasure().getDescriptor() ) ),
false
);
methodVisitor.visitInsn( Opcodes.RETURN );
return new Size( 1 + persistentField.getType().getStackSize().getSize(), instrumentedMethod.getStackSize() );
}
Example 3
| Source File: AdviceExceptionHandler.java From kanela with Apache License 2.0 | 6 votes |
|
/**
* Produces the following bytecode:
*
* <pre>
* } catch(Throwable throwable) {
* kanela.agent.bootstrap.log.LoggerHandler.error("An error occurred while trying to apply an advisor", throwable)
* }
* </pre>
*/
private static StackManipulation getStackManipulation() {
return new StackManipulation() {
@Override
public boolean isValid() {
return true;
}
@Override
public Size apply(MethodVisitor methodVisitor, Implementation.Context implementationContext) {
val endCatchBlock = new Label();
//message
methodVisitor.visitLdcInsn("An error occurred while trying to apply an advisor");
// logger, message, throwable => throwable, message, logger
methodVisitor.visitInsn(Opcodes.SWAP);
methodVisitor.visitMethodInsn(INVOKESTATIC, "kanela/agent/bootstrap/log/LoggerHandler", "error", "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
methodVisitor.visitJumpInsn(GOTO, endCatchBlock);
// ending catch block
methodVisitor.visitLabel(endCatchBlock);
return new StackManipulation.Size(-1, 1);
}
};
}
Example 4
| Source File: FieldReaderAppender.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
protected void fieldRead(MethodVisitor methodVisitor) {
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + persistentFieldAsDefined.getName(),
Type.getMethodDescriptor( Type.getType( persistentFieldAsDefined.getType().asErasure().getDescriptor() ) ),
false
);
}
Example 5
| Source File: FieldReaderAppender.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
protected void fieldWrite(MethodVisitor methodVisitor) {
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + persistentFieldAsDefined.getName(),
Type.getMethodDescriptor( Type.getType( void.class ), Type.getType( persistentFieldAsDefined.getType().asErasure().getDescriptor() ) ),
false
);
}
Example 6
| Source File: PersistentAttributeTransformer.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
public MethodVisitor wrap(
TypeDescription instrumentedType,
MethodDescription instrumentedMethod,
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
TypePool typePool,
int writerFlags,
int readerFlags) {
return new MethodVisitor( Opcodes.ASM5, methodVisitor ) {
@Override
public void visitFieldInsn(int opcode, String owner, String name, String desc) {
if ( isEnhanced( owner, name, desc ) ) {
switch ( opcode ) {
case Opcodes.GETFIELD:
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
owner,
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + name,
"()" + desc,
false
);
return;
case Opcodes.PUTFIELD:
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
owner,
EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + name,
"(" + desc + ")V",
false
);
return;
}
}
super.visitFieldInsn( opcode, owner, name, desc );
}
};
}
Example 7
| Source File: FieldWriterAppender.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
protected void fieldRead(MethodVisitor methodVisitor) {
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + persistentFieldAsDefined.getName(),
Type.getMethodDescriptor( Type.getType( persistentFieldAsDefined.getType().asErasure().getDescriptor() ) ),
false
);
}
Example 8
| Source File: FieldWriterAppender.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
protected void fieldWrite(MethodVisitor methodVisitor) {
methodVisitor.visitMethodInsn(
Opcodes.INVOKESPECIAL,
managedCtClass.getSuperClass().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + persistentFieldAsDefined.getName(),
Type.getMethodDescriptor( Type.getType( void.class ), Type.getType( persistentFieldAsDefined.getType().asErasure().getDescriptor() ) ),
false
);
}
Example 9
| Source File: BytecodeProviderImpl.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod) {
methodVisitor.visitLdcInsn( getters.length );
methodVisitor.visitTypeInsn( Opcodes.ANEWARRAY, Type.getInternalName( Object.class ) );
int index = 0;
for ( Method getter : getters ) {
methodVisitor.visitInsn( Opcodes.DUP );
methodVisitor.visitLdcInsn( index++ );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 1 );
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, Type.getInternalName( clazz ) );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
Type.getInternalName( clazz ),
getter.getName(),
Type.getMethodDescriptor( getter ),
false
);
if ( getter.getReturnType().isPrimitive() ) {
PrimitiveBoxingDelegate.forPrimitive( new TypeDescription.ForLoadedType( getter.getReturnType() ) )
.assignBoxedTo(
TypeDescription.Generic.OBJECT,
ReferenceTypeAwareAssigner.INSTANCE,
Assigner.Typing.STATIC
)
.apply( methodVisitor, implementationContext );
}
methodVisitor.visitInsn( Opcodes.AASTORE );
}
methodVisitor.visitInsn( Opcodes.ARETURN );
return new Size( 6, instrumentedMethod.getStackSize() );
}
Example 10
| Source File: BytecodeProviderImpl.java From lams with GNU General Public License v2.0 | 5 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod) {
int index = 0;
for ( Method setter : setters ) {
methodVisitor.visitVarInsn( Opcodes.ALOAD, 1 );
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, Type.getInternalName( clazz ) );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 2 );
methodVisitor.visitLdcInsn( index++ );
methodVisitor.visitInsn( Opcodes.AALOAD );
if ( setter.getParameterTypes()[0].isPrimitive() ) {
PrimitiveUnboxingDelegate.forReferenceType( TypeDescription.Generic.OBJECT )
.assignUnboxedTo(
new TypeDescription.Generic.OfNonGenericType.ForLoadedType( setter.getParameterTypes()[0] ),
ReferenceTypeAwareAssigner.INSTANCE,
Assigner.Typing.DYNAMIC
)
.apply( methodVisitor, implementationContext );
}
else {
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, Type.getInternalName( setter.getParameterTypes()[0] ) );
}
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
Type.getInternalName( clazz ),
setter.getName(),
Type.getMethodDescriptor( setter ),
false
);
}
methodVisitor.visitInsn( Opcodes.RETURN );
return new Size( 4, instrumentedMethod.getStackSize() );
}
Example 11
| Source File: InlineDirtyCheckingHandler.java From lams with GNU General Public License v2.0 | 4 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Context implementationContext,
MethodDescription instrumentedMethod) {
// if (arg != field) {
methodVisitor.visitVarInsn( Type.getType( persistentField.getType().asErasure().getDescriptor() ).getOpcode( Opcodes.ILOAD ), 1 );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
if ( persistentField.getDeclaringType().asErasure().equals( managedCtClass ) ) {
methodVisitor.visitFieldInsn(
Opcodes.GETFIELD,
persistentField.getDeclaringType().asErasure().getInternalName(),
persistentField.getName(),
persistentField.getDescriptor()
);
}
else {
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
persistentField.getDeclaringType().asErasure().getInternalName(),
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + persistentField.getName(),
Type.getMethodDescriptor( Type.getType( persistentField.getDescriptor() ) ),
false
);
}
int branchCode;
if ( persistentField.getType().isPrimitive() ) {
if ( persistentField.getType().represents( long.class ) ) {
methodVisitor.visitInsn( Opcodes.LCMP );
}
else if ( persistentField.getType().represents( float.class ) ) {
methodVisitor.visitInsn( Opcodes.FCMPL );
}
else if ( persistentField.getType().represents( double.class ) ) {
methodVisitor.visitInsn( Opcodes.DCMPL );
}
else {
methodVisitor.visitInsn( Opcodes.ISUB );
}
branchCode = Opcodes.IFEQ;
}
else {
methodVisitor.visitMethodInsn(
Opcodes.INVOKESTATIC,
Type.getInternalName( Objects.class ),
"deepEquals",
Type.getMethodDescriptor( Type.getType( boolean.class ), Type.getType( Object.class ), Type.getType( Object.class ) ),
false
);
branchCode = Opcodes.IFNE;
}
Label skip = new Label();
methodVisitor.visitJumpInsn( branchCode, skip );
// this.$$_hibernate_trackChange(fieldName)
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitLdcInsn( persistentField.getName() );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
managedCtClass.getInternalName(),
EnhancerConstants.TRACKER_CHANGER_NAME,
Type.getMethodDescriptor( Type.getType( void.class ), Type.getType( String.class ) ),
false
);
// }
methodVisitor.visitLabel( skip );
if ( implementationContext.getClassFileVersion().isAtLeast( ClassFileVersion.JAVA_V6 ) ) {
methodVisitor.visitFrame( Opcodes.F_SAME, 0, null, 0, null );
}
return new Size( 1 + 2 * persistentField.getType().asErasure().getStackSize().getSize(), instrumentedMethod.getStackSize() );
}
Example 12
| Source File: FieldReaderAppender.java From lams with GNU General Public License v2.0 | 4 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod) {
TypeDescription dispatcherType = persistentFieldAsDefined.getType().isPrimitive()
? persistentFieldAsDefined.getType().asErasure()
: TypeDescription.OBJECT;
// if ( this.$$_hibernate_getInterceptor() != null )
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
managedCtClass.getInternalName(),
EnhancerConstants.INTERCEPTOR_GETTER_NAME,
Type.getMethodDescriptor( Type.getType( PersistentAttributeInterceptor.class ) ),
false
);
Label skip = new Label();
methodVisitor.visitJumpInsn( Opcodes.IFNULL, skip );
// this (for field write)
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
// this.$$_hibernate_getInterceptor();
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
managedCtClass.getInternalName(),
EnhancerConstants.INTERCEPTOR_GETTER_NAME,
Type.getMethodDescriptor( Type.getType( PersistentAttributeInterceptor.class ) ),
false
);
// .readXXX( self, fieldName, field );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitLdcInsn( persistentFieldAsDefined.getName() );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
fieldRead( methodVisitor );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEINTERFACE,
Type.getInternalName( PersistentAttributeInterceptor.class ),
"read" + EnhancerImpl.capitalize( dispatcherType.getSimpleName() ),
Type.getMethodDescriptor(
Type.getType( dispatcherType.getDescriptor() ),
Type.getType( Object.class ),
Type.getType( String.class ),
Type.getType( dispatcherType.getDescriptor() )
),
true
);
// field = (cast) XXX
if ( !dispatcherType.isPrimitive() ) {
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, persistentFieldAsDefined.getType().asErasure().getInternalName() );
}
fieldWrite( methodVisitor );
// end if
methodVisitor.visitLabel( skip );
if ( implementationContext.getClassFileVersion().isAtLeast( ClassFileVersion.JAVA_V6 ) ) {
methodVisitor.visitFrame( Opcodes.F_SAME, 0, null, 0, null );
}
// return field
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
fieldRead( methodVisitor );
if ( !persistentField.getType().isPrimitive()
&& !persistentField.getType().asErasure().getInternalName().equals( persistentFieldAsDefined.getType().asErasure().getInternalName() ) ) {
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, persistentField.getType().asErasure().getInternalName() );
}
methodVisitor.visitInsn( Type.getType( persistentFieldAsDefined.getType().asErasure().getDescriptor() ).getOpcode( Opcodes.IRETURN ) );
return new Size( 4 + persistentFieldAsDefined.getType().getStackSize().getSize(), instrumentedMethod.getStackSize() );
}
Example 13
| Source File: FieldAccessEnhancer.java From lams with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodVisitor wrap(
TypeDescription instrumentedType,
MethodDescription instrumentedMethod,
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
TypePool typePool,
int writerFlags,
int readerFlags) {
return new MethodVisitor( Opcodes.ASM5, methodVisitor ) {
@Override
public void visitFieldInsn(int opcode, String owner, String name, String desc) {
if ( opcode != Opcodes.GETFIELD && opcode != Opcodes.PUTFIELD ) {
super.visitFieldInsn( opcode, owner, name, desc );
return;
}
FieldDescription field = findField( owner, name, desc );
if ( ( enhancementContext.isEntityClass( field.getDeclaringType().asErasure() )
|| enhancementContext.isCompositeClass( field.getDeclaringType().asErasure() ) )
&& !field.getType().asErasure().equals( managedCtClass )
&& enhancementContext.isPersistentField( field )
&& !EnhancerImpl.isAnnotationPresent( field, Id.class )
&& !field.getName().equals( "this$0" ) ) {
log.debugf(
"Extended enhancement: Transforming access to field [%s.%s] from method [%s#%s]",
field.getType().asErasure(),
field.getName(),
field.getName(),
name
);
switch ( opcode ) {
case Opcodes.GETFIELD:
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
owner,
EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + name,
Type.getMethodDescriptor( Type.getType( desc ) ),
false
);
return;
case Opcodes.PUTFIELD:
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
owner,
EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + name,
Type.getMethodDescriptor( Type.getType( void.class ), Type.getType( desc ) ),
false
);
return;
default:
throw new EnhancementException( "Unexpected opcode: " + opcode );
}
}
else {
super.visitFieldInsn( opcode, owner, name, desc );
}
}
};
}
Example 14
| Source File: FieldWriterAppender.java From lams with GNU General Public License v2.0 | 4 votes |
|
@Override
public Size apply(
MethodVisitor methodVisitor,
Implementation.Context implementationContext,
MethodDescription instrumentedMethod) {
TypeDescription dispatcherType = persistentFieldAsDefined.getType().isPrimitive()
? persistentFieldAsDefined.getType().asErasure()
: TypeDescription.OBJECT;
// if ( this.$$_hibernate_getInterceptor() != null )
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
managedCtClass.getInternalName(),
EnhancerConstants.INTERCEPTOR_GETTER_NAME,
Type.getMethodDescriptor( Type.getType( PersistentAttributeInterceptor.class ) ),
false
);
Label noInterceptor = new Label();
methodVisitor.visitJumpInsn( Opcodes.IFNULL, noInterceptor );
// this (for field write)
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
// this.$$_hibernate_getInterceptor();
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEVIRTUAL,
managedCtClass.getInternalName(),
EnhancerConstants.INTERCEPTOR_GETTER_NAME,
Type.getMethodDescriptor( Type.getType( PersistentAttributeInterceptor.class ) ),
false
);
// .writeXXX( self, fieldName, field, arg1 );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
methodVisitor.visitLdcInsn( persistentFieldAsDefined.getName() );
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
fieldRead( methodVisitor );
methodVisitor.visitVarInsn( Type.getType( dispatcherType.getDescriptor() ).getOpcode( Opcodes.ILOAD ), 1 );
methodVisitor.visitMethodInsn(
Opcodes.INVOKEINTERFACE,
Type.getInternalName( PersistentAttributeInterceptor.class ),
"write" + EnhancerImpl.capitalize( dispatcherType.getSimpleName() ),
Type.getMethodDescriptor(
Type.getType( dispatcherType.getDescriptor() ),
Type.getType( Object.class ),
Type.getType( String.class ),
Type.getType( dispatcherType.getDescriptor() ),
Type.getType( dispatcherType.getDescriptor() )
),
true
);
// arg1 = (cast) XXX
if ( !dispatcherType.isPrimitive() ) {
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, persistentFieldAsDefined.getType().asErasure().getInternalName() );
}
fieldWrite( methodVisitor );
// return
methodVisitor.visitInsn( Opcodes.RETURN );
// else
methodVisitor.visitLabel( noInterceptor );
if ( implementationContext.getClassFileVersion().isAtLeast( ClassFileVersion.JAVA_V6 ) ) {
methodVisitor.visitFrame( Opcodes.F_SAME, 0, null, 0, null );
}
// this (for field write)
methodVisitor.visitVarInsn( Opcodes.ALOAD, 0 );
// arg1 = (cast) XXX
methodVisitor.visitVarInsn( Type.getType( dispatcherType.getDescriptor() ).getOpcode( Opcodes.ILOAD ), 1 );
if ( !dispatcherType.isPrimitive() ) {
methodVisitor.visitTypeInsn( Opcodes.CHECKCAST, persistentFieldAsDefined.getType().asErasure().getInternalName() );
}
fieldWrite( methodVisitor );
// return
methodVisitor.visitInsn( Opcodes.RETURN );
return new Size( 4 + 2 * persistentFieldAsDefined.getType().getStackSize().getSize(), instrumentedMethod.getStackSize() );
}
