Example usage for org.objectweb.asm Opcodes ASM4

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ASM4.

Prototype

int ASM4

To view the source code for org.objectweb.asm Opcodes ASM4.

Click Source Link

Usage

From source file:org.jacoco.core.test.validation.FramesTest.java

License:Open Source License

private byte[] calculateFrames(byte[] source) {
    ClassReader rc = new ClassReader(source);
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);

    // Adjust Version to 1.6 to enable frames:
    rc.accept(new ClassVisitor(Opcodes.ASM4, cw) {

        @Override/*from  ww  w . java  2 s.  c  o m*/
        public void visit(int version, int access, String name, String signature, String superName,
                String[] interfaces) {
            super.visit(Opcodes.V1_6, access, name, signature, superName, interfaces);
        }
    }, 0);
    return cw.toByteArray();
}

From source file:org.jboss.errai.GwtLinkerClassHider.java

License:Apache License

/**
 * Generates a class with a no-args public constructor.
 * //from ww  w. j a  v  a2 s. c o m
 * @param loader
 *          ignored.
 * @param className
 *          The generated class has this package and name.
 * @param classBeingRedefined
 *          ignored.
 * @param protectionDomain
 *          ignored.
 * @param classfileBuffer
 *          ignored.
 * @return bytecode for an empty class whose package and class name are
 *         determined by the {@code className} parameter.
 */
public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined,
        ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {

    if (className.contains("Linker")) {
        final List<String> annotations = new ArrayList<String>();
        ClassReader cr = new ClassReader(classfileBuffer);
        ClassVisitor cv = new ClassVisitor(Opcodes.ASM4) {
            @Override
            public AnnotationVisitor visitAnnotation(String name, boolean val) {
                annotations.add(name);
                return super.visitAnnotation(name, val);
            }

        };
        cr.accept(cv, 0);

        if (annotations.contains("Lcom/google/gwt/core/ext/linker/Shardable;")
                || annotations.contains("Lcom/google/gwt/core/ext/linker/LinkerOrder;")) {

            if (debug) {
                System.out.println("client-local-class-hider (linkers): hiding GWT linker class: " + className);
            }
            return EmtpyClassGenerator.generateEmptyClass(className);
        }
    }

    if (debug) {
        System.out.println("client-local-class-hider (linkers): NOT hiding class (not a linker): " + className);
    }
    return null;
}

From source file:org.krzogr.trackthread.instrument.ThreadClassTransformer.java

License:Open Source License

private byte[] transformThreadClass(final ClassLoader loader, final String className,
        final Class<?> classBeingRedefined, final ProtectionDomain protectionDomain,
        final byte[] classfileBuffer, final boolean isThreadSubclass) {
    try {/*w  ww. jav  a 2  s  .  com*/
        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);

        ClassVisitor cv = isThreadSubclass ? new ThreadSubclassVisitor(Opcodes.ASM4, cw)
                : new ThreadClassVisitor(Opcodes.ASM4, cw);

        ClassReader cr = new ClassReader(classfileBuffer);
        cr.accept(cv, ClassReader.EXPAND_FRAMES);

        return cw.toByteArray();
    } catch (Exception e) {
        System.err.println("Fatal error while transforming class " + className + ": " + e.getMessage());
        e.printStackTrace();
    }

    return classfileBuffer;
}

From source file:org.krzogr.trackthread.instrument.ThreadClassVisitor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
        final String[] exceptions) {
    if (StartMethodVisitor.matches(access, name, desc)) {
        return new StartMethodVisitor(Opcodes.ASM4,
                super.visitMethod(access, name, desc, signature, exceptions));
    } else if (SetNameMethodVisitor.matches(access, name, desc)) {
        return new SetNameMethodVisitor(Opcodes.ASM4,
                super.visitMethod(access, name, desc, signature, exceptions));
    } else if (RunMethodVisitor.matches(access, name, desc)) {
        return new RunMethodVisitor(Opcodes.ASM4, super.visitMethod(access, name, desc, signature, exceptions),
                access, name, desc);//from   w w w.j av  a  2 s  .  co m
    } else {
        return super.visitMethod(access, name, desc, signature, exceptions);
    }
}

From source file:org.krzogr.trackthread.instrument.ThreadSubclassVisitor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
        final String[] exceptions) {
    if (RunMethodVisitor.matches(access, name, desc)) {
        return new RunMethodVisitor(Opcodes.ASM4, super.visitMethod(access, name, desc, signature, exceptions),
                access, name, desc);/*  w  w  w  . j ava2 s.  c o  m*/
    } else {
        return super.visitMethod(access, name, desc, signature, exceptions);
    }
}

From source file:org.mutabilitydetector.checkers.AsmMutabilityChecker.java

License:Apache License

public AsmMutabilityChecker() {
    super(Opcodes.ASM4);
}

From source file:org.mutabilitydetector.checkers.CollectionFieldTest.java

License:Apache License

private String[] descAndSignatureOfSingleFieldIn(Class<?> class1) throws IOException {
    final String[] fieldDescSignature = new String[2];

    ClassReader classReader = new ClassReader(class1.getName());
    classReader.accept(new ClassVisitor(Opcodes.ASM4) {
        @Override//  w  w  w .j a  v a2 s . c om
        public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
            fieldDescSignature[0] = desc;
            fieldDescSignature[1] = signature;
            return super.visitField(access, name, desc, signature, value);

        };
    }, 0);
    return fieldDescSignature;
}

From source file:org.openjdk.jmh.generators.asm.AnnotationInvocationHandler.java

License:Open Source License

public AnnotationInvocationHandler(String className, AnnotationVisitor annotationVisitor) {
    super(Opcodes.ASM4, annotationVisitor);
    this.className = className;
    this.values = new HashMultimap<>();
}

From source file:org.openjdk.jmh.generators.asm.AnnotationInvocationHandler.java

License:Open Source License

@Override
public AnnotationVisitor visitArray(final String name) {
    return new AnnotationVisitor(Opcodes.ASM4, super.visitArray(name)) {
        @Override//www  . j  a va2s.  co m
        public void visitEnum(String n, String desc, String value) {
            values.put(name, value);
            super.visitEnum(n, desc, value);
        }

        @Override
        public void visit(String n, Object value) {
            values.put(name, value);
            super.visit(n, value);
        }
    };
}

From source file:org.openjdk.jmh.generators.asm.ASMClassInfo.java

License:Open Source License

public ASMClassInfo(ClassInfoRepo classInfos) {
    super(Opcodes.ASM4);
    this.classInfos = classInfos;
    this.methods = new ArrayList<>();
    this.constructors = new ArrayList<>();
    this.fields = new ArrayList<>();
}