Examples with FieldVisitor org.objectweb.asm.FieldVisitor used on opensource projects

Example 36 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project spring-loaded by spring-projects.

the class SystemClassReflectionGenerator method generateJLCGDF.

public static void generateJLCGDF(ClassWriter cw, String classname, String fieldname, String methodname) {
    FieldVisitor fv = cw.visitField(ACC_PUBLIC_STATIC, fieldname, "Ljava/lang/reflect/Method;", null, null);
    fv.visitEnd();
    MethodVisitor mv = cw.visitMethod(ACC_PRIVATE + ACC_STATIC, fieldname, "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Field;", null, new String[] { "java/lang/NoSuchFieldException" });
    mv.visitCode();
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitTryCatchBlock(l0, l1, l2, "java/lang/reflect/InvocationTargetException");
    Label l3 = new Label();
    mv.visitTryCatchBlock(l0, l1, l3, "java/lang/Exception");
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitFieldInsn(GETSTATIC, classname, fieldname, "Ljava/lang/reflect/Method;");
    mv.visitJumpInsn(IFNONNULL, l0);
    Label l5 = new Label();
    mv.visitLabel(l5);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", methodname, "(Ljava/lang/String;)Ljava/lang/reflect/Field;", false);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l0);
    mv.visitFieldInsn(GETSTATIC, classname, fieldname, "Ljava/lang/reflect/Method;");
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ICONST_2);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitInsn(AASTORE);
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(AASTORE);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "invoke", "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;", false);
    mv.visitTypeInsn(CHECKCAST, "java/lang/reflect/Field");
    mv.visitLabel(l1);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l2);
    mv.visitVarInsn(ASTORE, 2);
    Label l6 = new Label();
    mv.visitLabel(l6);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
    mv.visitTypeInsn(INSTANCEOF, "java/lang/NoSuchFieldException");
    Label l7 = new Label();
    mv.visitJumpInsn(IFEQ, l7);
    Label l8 = new Label();
    mv.visitLabel(l8);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
    mv.visitTypeInsn(CHECKCAST, "java/lang/NoSuchFieldException");
    mv.visitInsn(ATHROW);
    mv.visitLabel(l3);
    mv.visitVarInsn(ASTORE, 2);
    mv.visitLabel(l7);
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ARETURN);
    Label l9 = new Label();
    mv.visitLabel(l9);
    // mv.visitLocalVariable("clazz", "Ljava/lang/Class;", "Ljava/lang/Class<*>;", l4, l9, 0);
    // mv.visitLocalVariable("fieldname", "Ljava/lang/String;", null, l4, l9, 1);
    // mv.visitLocalVariable("ite", "Ljava/lang/reflect/InvocationTargetException;", null, l6, l3, 2);
    mv.visitMaxs(6, 3);
    mv.visitEnd();
}

Example 37 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project maple-ir by LLVM-but-worse.

the class TraceClassVisitor method visitField.

@Override
public FieldVisitor visitField(final int access, final String name, final String desc, final String signature, final Object value) {
    Printer p = this.p.visitField(access, name, desc, signature, value);
    FieldVisitor fv = cv == null ? null : cv.visitField(access, name, desc, signature, value);
    return new TraceFieldVisitor(fv, p);
}

Example 38 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project gradle by gradle.

the class ApiMemberWriter method writeClass.

public void writeClass(ClassMember classMember, Set<MethodMember> methods, Set<FieldMember> fields, Set<InnerClassMember> innerClasses) {
    apiMemberAdapter.visit(classMember.getVersion(), classMember.getAccess(), classMember.getName(), classMember.getSignature(), classMember.getSuperName(), classMember.getInterfaces());
    writeClassAnnotations(classMember.getAnnotations());
    for (MethodMember method : methods) {
        writeMethod(method);
    }
    for (FieldMember field : fields) {
        FieldVisitor fieldVisitor = apiMemberAdapter.visitField(field.getAccess(), field.getName(), field.getTypeDesc(), field.getSignature(), field.getValue());
        writeFieldAnnotations(fieldVisitor, field.getAnnotations());
        fieldVisitor.visitEnd();
    }
    for (InnerClassMember innerClass : innerClasses) {
        apiMemberAdapter.visitInnerClass(innerClass.getName(), innerClass.getOuterName(), innerClass.getInnerName(), innerClass.getAccess());
    }
    apiMemberAdapter.visitEnd();
}

Example 39 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project SpongeCommon by SpongePowered.

the class ClassEventListenerFactory method generateClass.

private static byte[] generateClass(String name, final Class<?> handle, final ListenerClassVisitor.DiscoveredMethod method, final Class<?> eventClass, final Class<? extends EventFilter> filter) {
    name = name.replace('.', '/');
    final String handleName = Type.getInternalName(handle);
    final String handleDescriptor = Type.getDescriptor(handle);
    final String filterName = Type.getInternalName(filter);
    final String eventDescriptor = method.descriptor();
    final ClassWriter cw = new LoaderClassWriter(handle.getClassLoader(), ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;
    final FieldVisitor fv;
    cw.visit(V1_6, ACC_PUBLIC + ACC_FINAL + ACC_SUPER, name, null, ClassEventListenerFactory.BASE_HANDLER, null);
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_STATIC, "FILTER", "L" + filterName + ";", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, filterName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, filterName, "<init>", "()V", false);
        mv.visitFieldInsn(PUTSTATIC, name, "FILTER", "L" + filterName + ";");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", '(' + handleDescriptor + ")V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, ClassEventListenerFactory.BASE_HANDLER, "<init>", "(Ljava/lang/Object;)V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "handle", ClassEventListenerFactory.HANDLE_METHOD_DESCRIPTOR, null, new String[] { "java/lang/Exception" });
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, name, "FILTER", "L" + filterName + ";");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(EventFilter.class), "filter", ClassEventListenerFactory.FILTER_DESCRIPTOR, true);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        final Label l2 = new Label();
        mv.visitJumpInsn(IFNULL, l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name, "handle", "Ljava/lang/Object;");
        mv.visitTypeInsn(CHECKCAST, handleName);
        for (int i = 0; i < method.parameterTypes().length; i++) {
            mv.visitVarInsn(ALOAD, 2);
            mv.visitIntInsn(BIPUSH, i);
            mv.visitInsn(AALOAD);
            final Type paramType = method.parameterTypes()[i].type();
            GeneratorUtils.visitUnboxingMethod(mv, paramType);
        }
        mv.visitMethodInsn(INVOKEVIRTUAL, handleName, method.methodName(), eventDescriptor, false);
        mv.visitLabel(l2);
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Example 40 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project robovm by robovm.

the class ObjCProtocolProxyPlugin method generateProxyMethods.

private void generateProxyMethods(Config config, List<String> interfazes, ClassWriter cw) throws IOException {
    Clazzes clazzes = config.getClazzes();
    final Set<String> addedMethods = new HashSet<>();
    for (String interfaze : interfazes) {
        Clazz clazz = clazzes.load(interfaze);
        if (clazz == null) {
            continue;
        }
        // Copy all abstract method (we skip default methods) to the proxy 
        // and make them native instead of abstract.
        ClassReader classReader = new ClassReader(clazz.getBytes());
        classReader.accept(new ClassVisitor(ASM4, cw) {

            @Override
            public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
                String key = name + desc;
                if ((access & ACC_ABSTRACT) > 0 && !addedMethods.contains(key)) {
                    access &= ~ACC_ABSTRACT;
                    access |= ACC_NATIVE;
                    addedMethods.add(key);
                    return super.visitMethod(access, name, desc, signature, exceptions);
                }
                return null;
            }

            @Override
            public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
            // Ignored
            }

            @Override
            public void visitEnd() {
            // Ignored
            }

            @Override
            public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
                // Ignored
                return null;
            }

            @Override
            public void visitAttribute(Attribute attr) {
            // Ignored
            }

            @Override
            public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
                // Ignored
                return null;
            }

            @Override
            public void visitInnerClass(String name, String outerName, String innerName, int access) {
            // Ignored
            }

            @Override
            public void visitOuterClass(String owner, String name, String desc) {
            // Ignored
            }

            @Override
            public void visitSource(String source, String debug) {
            // Ignored
            }
        }, 0);
    }
}