Example usage for org.objectweb.asm MethodVisitor MethodVisitor

List of usage examples for org.objectweb.asm MethodVisitor MethodVisitor

  1. HOME
  2. Java
  3. org.objectweb.asm
  4. org.objectweb.asm.*
  5. MethodVisitor
  6. MethodVisitor

Introduction

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

Prototype

public MethodVisitor(final int api, final MethodVisitor methodVisitor)

Source Link

Document

Constructs a new MethodVisitor .

Usage

From source file:com.foxelbox.spigotpatcher.patchers.OnPlayerJoinDisconnectPatcher.java

License:Open Source License

@Override
public MethodVisitor getVisitor(int api, MethodVisitor parent) {
    return new MethodVisitor(api, parent) {
        protected void checkMethodInsn(int opcode, String clazz, String name, String desc) {
            if (opcode == Opcodes.INVOKEVIRTUAL && clazz.endsWith("/CraftPlayer") && name.equals("canSee")) {
                visitInsn(Opcodes.POP);/* w ww .  java 2s. c  om*/
                visitInsn(Opcodes.ICONST_1);
                System.out.println("OnJoinPatcher: PATCHED (3 times = OK)");
            }
        }

        @Override
        public void visitMethodInsn(int opcode, String clazz, String name, String desc, boolean isInterface) {
            super.visitMethodInsn(opcode, clazz, name, desc, isInterface);
            checkMethodInsn(opcode, clazz, name, desc);
        }

        @Override
        public void visitMethodInsn(int opcode, String clazz, String name, String desc) {
            super.visitMethodInsn(opcode, clazz, name, desc);
            checkMethodInsn(opcode, clazz, name, desc);
        }
    };
}

From source file:com.gargoylesoftware.js.nashorn.internal.tools.nasgen.ScriptClassInfoCollector.java

License:Open Source License

@Override
public MethodVisitor visitMethod(final int methodAccess, final String methodName, final String methodDesc,
        final String signature, final String[] exceptions) {

    final MethodVisitor delegateMV = super.visitMethod(methodAccess, methodName, methodDesc, signature,
            exceptions);//  w  w  w .  ja va2  s  .co m

    return new MethodVisitor(Main.ASM_VERSION, delegateMV) {

        @Override
        public AnnotationVisitor visitAnnotation(final String descriptor, final boolean visible) {
            final AnnotationVisitor delegateAV = super.visitAnnotation(descriptor, visible);
            final Kind annoKind = ScriptClassInfo.annotations.get(descriptor);

            if (annoKind != null) {
                if ((methodAccess & Opcodes.ACC_STATIC) == 0) {
                    error(methodName, methodDesc, "nasgen method annotations cannot be on instance methods");
                }

                final MemberInfo memInfo = new MemberInfo();

                // annoKind == GETTER or SPECIALIZED_FUNCTION
                memInfo.setKind(annoKind);
                memInfo.setJavaName(methodName);
                memInfo.setJavaDesc(methodDesc);
                memInfo.setJavaAccess(methodAccess);

                addScriptMember(memInfo);

                return new AnnotationVisitor(Main.ASM_VERSION, delegateAV) {
                    // These could be "null" if values are not supplied,
                    // in which case we have to use the default values.
                    private String name;
                    private Integer attributes;
                    private Integer arity;
                    private Where where;
                    private boolean isSpecializedConstructor;
                    private boolean isOptimistic;
                    private Type linkLogicClass = MethodGenerator.EMPTY_LINK_LOGIC_TYPE;

                    @Override
                    public void visit(final String annotationName, final Object annotationValue) {
                        switch (annotationName) {
                        case "name":
                            this.name = (String) annotationValue;
                            if (name.isEmpty()) {
                                name = null;
                            }
                            break;
                        case "attributes":
                            this.attributes = (Integer) annotationValue;
                            break;
                        case "arity":
                            this.arity = (Integer) annotationValue;
                            break;
                        case "isConstructor":
                            assert annoKind == Kind.SPECIALIZED_FUNCTION;
                            this.isSpecializedConstructor = (Boolean) annotationValue;
                            break;
                        case "isOptimistic":
                            assert annoKind == Kind.SPECIALIZED_FUNCTION;
                            this.isOptimistic = (Boolean) annotationValue;
                            break;
                        case "linkLogic":
                            this.linkLogicClass = (Type) annotationValue;
                            break;
                        default:
                            break;
                        }

                        super.visit(annotationName, annotationValue);
                    }

                    @Override
                    public void visitEnum(final String enumName, final String desc, final String enumValue) {
                        switch (enumName) {
                        case "where":
                            if (WHERE_ENUM_DESC.equals(desc)) {
                                this.where = Where.valueOf(enumValue);
                            }
                            break;
                        default:
                            break;
                        }
                        super.visitEnum(enumName, desc, enumValue);
                    }

                    @SuppressWarnings("fallthrough")
                    @Override
                    public void visitEnd() {
                        super.visitEnd();

                        if (memInfo.getKind() == Kind.CONSTRUCTOR) {
                            memInfo.setName(name == null ? scriptClassName : name);
                        } else {
                            memInfo.setName(name == null ? methodName : name);
                        }
                        memInfo.setAttributes(attributes == null ? MemberInfo.DEFAULT_ATTRIBUTES : attributes);

                        memInfo.setArity((arity == null) ? MemberInfo.DEFAULT_ARITY : arity);
                        if (where == null) {
                            // by default @Getter/@Setter belongs to INSTANCE
                            // @Function belong to PROTOTYPE.
                            switch (memInfo.getKind()) {
                            case GETTER:
                            case SETTER:
                                where = Where.INSTANCE;
                                break;
                            case CONSTRUCTOR:
                                where = Where.CONSTRUCTOR;
                                break;
                            case FUNCTION:
                                where = Where.PROTOTYPE;
                                break;
                            case SPECIALIZED_FUNCTION:
                                where = isSpecializedConstructor ? Where.CONSTRUCTOR : Where.PROTOTYPE;
                                //fallthru
                            default:
                                break;
                            }
                        }
                        memInfo.setWhere(where);
                        memInfo.setLinkLogicClass(linkLogicClass);
                        memInfo.setIsSpecializedConstructor(isSpecializedConstructor);
                        memInfo.setIsOptimistic(isOptimistic);
                    }
                };
            }

            return delegateAV;
        }
    };
}

From source file:com.gargoylesoftware.js.nashorn.internal.tools.nasgen.ScriptClassInstrumentor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(final int methodAccess, final String methodName, final String methodDesc,
        final String signature, final String[] exceptions) {

    final boolean isConstructor = INIT.equals(methodName);
    final boolean isStaticInit = CLINIT.equals(methodName);

    if (isStaticInit) {
        staticInitFound = true;//from w  w  w .  j a  v  a 2s  .c  om
    }

    final MethodGenerator delegateMV = new MethodGenerator(
            super.visitMethod(methodAccess, methodName, methodDesc, signature, exceptions), methodAccess,
            methodName, methodDesc);

    return new MethodVisitor(Main.ASM_VERSION, delegateMV) {
        @Override
        public void visitInsn(final int opcode) {
            // call $clinit$ just before return from <clinit>
            if (isStaticInit && opcode == RETURN) {
                super.visitMethodInsn(INVOKESTATIC, scriptClassInfo.getJavaName(), $CLINIT$, DEFAULT_INIT_DESC,
                        false);
            }
            super.visitInsn(opcode);
        }

        @Override
        public void visitMethodInsn(final int opcode, final String owner, final String name, final String desc,
                final boolean itf) {
            if (isConstructor && opcode == INVOKESPECIAL && INIT.equals(name)
                    && SCRIPTOBJECT_TYPE.equals(owner)) {
                super.visitMethodInsn(opcode, owner, name, desc, false);

                if (memberCount > 0) {
                    // initialize @Property fields if needed
                    for (final MemberInfo memInfo : scriptClassInfo.getMembers()) {
                        if (memInfo.isInstanceProperty() && !memInfo.getInitClass().isEmpty()) {
                            final String clazz = memInfo.getInitClass();
                            super.visitVarInsn(ALOAD, 0);
                            super.visitTypeInsn(NEW, clazz);
                            super.visitInsn(DUP);
                            super.visitMethodInsn(INVOKESPECIAL, clazz, INIT, DEFAULT_INIT_DESC, false);
                            super.visitFieldInsn(PUTFIELD, scriptClassInfo.getJavaName(), memInfo.getJavaName(),
                                    memInfo.getJavaDesc());
                        }

                        if (memInfo.isInstanceFunction()) {
                            super.visitVarInsn(ALOAD, 0);
                            ClassGenerator.newFunction(delegateMV, scriptClassInfo.getJavaName(), memInfo,
                                    scriptClassInfo.findSpecializations(memInfo.getJavaName()));
                            super.visitFieldInsn(PUTFIELD, scriptClassInfo.getJavaName(), memInfo.getJavaName(),
                                    OBJECT_DESC);
                        }
                    }
                }
            } else {
                super.visitMethodInsn(opcode, owner, name, desc, itf);
            }
        }

        @Override
        public AnnotationVisitor visitAnnotation(final String desc, final boolean visible) {
            if (ScriptClassInfo.annotations.containsKey(desc)) {
                // ignore script method annotations
                return null;
            }
            return super.visitAnnotation(desc, visible);
        }
    };
}

From source file:com.gargoylesoftware.js.nashorn.internal.tools.nasgen.ScriptClassJavaInstrumentor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(final int methodAccess, final String methodName, final String methodDesc,
        final String signature, final String[] exceptions) {

    final boolean isConstructor = INIT.equals(methodName);
    final boolean isStaticInit = CLINIT.equals(methodName);

    if (isStaticInit) {
        staticInitFound = true;//from w ww .  java  2s . c  o  m
    }

    final MethodGenerator delegateMV = new MethodGenerator(
            super.visitMethod(methodAccess, methodName, methodDesc, signature, exceptions), methodAccess,
            methodName, methodDesc);

    return new MethodVisitor(Main.ASM_VERSION, delegateMV) {
        @Override
        public void visitInsn(final int opcode) {
            // call $clinit$ just before return from <clinit>
            if (isStaticInit && opcode == RETURN) {
                super.visitMethodInsn(INVOKESTATIC, scriptClassInfo.getJavaName(), $CLINIT$, DEFAULT_INIT_DESC,
                        false);
            }
            super.visitInsn(opcode);
        }

        @Override
        public void visitMethodInsn(final int opcode, final String owner, final String name, final String desc,
                final boolean itf) {
            if (isConstructor && opcode == INVOKESPECIAL && INIT.equals(name)
                    && SCRIPTOBJECT_TYPE.equals(owner)) {
                super.visitMethodInsn(opcode, owner, name, desc, false);

                if (memberCount > 0) {
                    // initialize @Property fields if needed
                    for (final MemberInfo memInfo : scriptClassInfo.getMembers()) {
                        if (memInfo.isInstanceProperty() && !memInfo.getInitClass().isEmpty()) {
                            final String clazz = memInfo.getInitClass();
                            super.visitVarInsn(ALOAD, 0);
                            super.visitTypeInsn(NEW, clazz);
                            super.visitInsn(DUP);
                            super.visitMethodInsn(INVOKESPECIAL, clazz, INIT, DEFAULT_INIT_DESC, false);
                            super.visitFieldInsn(PUTFIELD, scriptClassInfo.getJavaName(), memInfo.getJavaName(),
                                    memInfo.getJavaDesc());
                        }

                        if (memInfo.isInstanceFunction()) {
                            super.visitVarInsn(ALOAD, 0);
                            ClassJavaGenerator.newFunction(delegateMV, scriptClassInfo.getJavaName(), memInfo,
                                    scriptClassInfo.findSpecializations(memInfo.getJavaName()));
                            super.visitFieldInsn(PUTFIELD, scriptClassInfo.getJavaName(), memInfo.getJavaName(),
                                    OBJECT_DESC);
                        }
                    }
                }
            } else {
                super.visitMethodInsn(opcode, owner, name, desc, itf);
            }
        }

        @Override
        public AnnotationVisitor visitAnnotation(final String desc, final boolean visible) {
            if (ScriptClassInfo.annotations.containsKey(desc)) {
                // ignore script method annotations
                return null;
            }
            return super.visitAnnotation(desc, visible);
        }
    };
}

From source file:com.github.antag99.retinazer.weaver.AccessProcessor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    MethodVisitor visitor = super.visitMethod(access, name, desc, signature, exceptions);

    if ((access & ACC_ABSTRACT) != 0)
        return visitor;

    return new MethodVisitor(ASM5, visitor) {
        @Override//from ww  w. j a  v  a  2 s .  c  o m
        public void visitFieldInsn(int opcode, String owner, String name, String desc) {
            if (opcode == GETFIELD || opcode == PUTFIELD) {
                Type fieldOwner = Type.getObjectType(owner);
                if (fieldOwner.getSort() == Type.OBJECT) {
                    WeaverMetadata metadata = weaver.getMetadata(fieldOwner.getInternalName());
                    if (metadata.componentMetadata != null) { // Is it a component?
                        ComponentProperty property = metadata.componentMetadata.propertiesByName.get(name);
                        if (property != null) { // Ensure the field is not generated by the weaver
                            if (opcode == GETFIELD)
                                super.visitMethodInsn(INVOKEVIRTUAL, owner, property.getGetterName(),
                                        property.getGetterDesc(), false);
                            else
                                super.visitMethodInsn(INVOKEVIRTUAL, owner, property.getSetterName(),
                                        property.getSetterDesc(), false);
                            return; // Don't attempt to access the fields of packed components
                        }
                    }
                }
            }
            super.visitFieldInsn(opcode, owner, name, desc);
        }
    };
}

From source file:com.github.antag99.retinazer.weaver.ComponentProcessor.java

License:Open Source License

@Override
public void visit(final int version, final int access, final String name, final String signature,
        final String superName, String[] interfaces) {
    if (!"java/lang/Object".equals(superName))
        throw new WeaverException("Failed to weave " + metadata.internalName + "; cannot extend other classes");

    if ((access & ACC_FINAL) == 0)
        throw new WeaverException("Failed to weave " + metadata.internalName + "; must be final");

    if (Arrays.asList(interfaces).contains(WeaverConstants.PACKED_COMPONENT_NAME))
        throw new WeaverException("Failed to weave " + metadata.internalName + "; already packed");

    if (signature != null)
        throw new WeaverException(
                "Failed to weave " + metadata.internalName + "; cannot use generic type arguments");

    interfaces = Arrays.copyOf(interfaces, interfaces.length);
    for (int i = 0; i < interfaces.length; i++)
        if (interfaces[i].equals(WeaverConstants.COMPONENT_NAME))
            interfaces[i] = WeaverConstants.PACKED_COMPONENT_NAME;

    super.visit(version, access, name, signature, superName, interfaces);

    super.visitField(ACC_PUBLIC, WeaverConstants.INDEX_FIELD_NAME, WeaverConstants.INDEX_FIELD_DESC, null,
            null);/* w ww  .  ja v  a2s  . c  om*/

    new MethodVisitor(ASM5, super.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
            visitInsn(RETURN);
            visitMaxs(-1, -1);
            visitEnd();
        }
    };
}

From source file:com.github.antag99.retinazer.weaver.ComponentProcessor.java

License:Open Source License

@Override
public FieldVisitor visitField(final int access, final String name, final String desc, final String signature,
        final Object value) {

    if ((access & ACC_STATIC) > 0)
        return super.visitField(access, name, desc, signature, value);

    final ComponentProperty property = metadata.propertiesByName.get(name);

    new MethodVisitor(ASM5,
            super.visitMethod(ACC_PUBLIC, property.getGetterName(), property.getGetterDesc(), null, null)) {
        {//from w w  w .  j a v a  2s .  c o  m
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, metadata.internalName, property.getBagName(), property.getBagDesc());
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, metadata.internalName, WeaverConstants.INDEX_FIELD_NAME,
                    WeaverConstants.INDEX_FIELD_DESC);
            Type erasedType = property.type.getSort() == Type.OBJECT ? Type.getObjectType("java/lang/Object")
                    : property.type;
            visitMethodInsn(INVOKEVIRTUAL, WeaverConstants.getBagName(property.type), "get",
                    "(I)" + erasedType.getDescriptor(), false);
            visitInsn(property.type.getOpcode(IRETURN));
            visitMaxs(-1, -1);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5,
            super.visitMethod(ACC_PUBLIC, property.getSetterName(), property.getSetterDesc(), null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, metadata.internalName, property.getBagName(), property.getBagDesc());
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, metadata.internalName, WeaverConstants.INDEX_FIELD_NAME,
                    WeaverConstants.INDEX_FIELD_DESC);
            visitVarInsn(property.type.getOpcode(ILOAD), 1);
            Type erasedType = property.type.getSort() == Type.OBJECT ? Type.getObjectType("java/lang/Object")
                    : property.type;
            visitMethodInsn(INVOKEVIRTUAL, WeaverConstants.getBagName(property.type), "set",
                    "(I" + erasedType.getDescriptor() + ")V", false);
            visitInsn(Opcodes.RETURN);
            visitMaxs(-1, -1);
            visitEnd();
        }
    };

    FieldVisitor storeField = super.visitField(ACC_PUBLIC, property.getBagName(), property.getBagDesc(), null,
            null);
    if (storeField != null)
        storeField.visitEnd();

    return null; // Remove backing field
}

From source file:com.github.antag99.retinazer.weaver.ComponentProcessor.java

License:Open Source License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    if (!name.equals("<init>"))
        return super.visitMethod(access, name, desc, signature, exceptions);

    // Turn the no-arg/default constructor into a reset() method.
    if (!desc.equals("()V"))
        throw new WeaverException(
                "Failed to weave " + metadata.internalName + "; cannot have multi-arg constructor");

    if (exceptions != null && exceptions.length > 0)
        throw new WeaverException(
                "Failed to weave " + metadata.internalName + "; constructor cannot throw exceptions");

    return new MethodVisitor(ASM5, super.visitMethod(access, WeaverConstants.RESET_METHOD_NAME,
            WeaverConstants.RESET_METHOD_DESC, null, null)) {
        @Override//from   w w w .  j  a  v a 2  s  .c o  m
        public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
            // Replace the super constructor invocation with a call to the clear() method
            if (opcode == INVOKESPECIAL && owner.equals("java/lang/Object") && name.equals("<init>")
                    && desc.equals("()V") && !itf) {
                super.visitMethodInsn(INVOKEVIRTUAL, metadata.internalName, WeaverConstants.CLEAR_METHOD_NAME,
                        WeaverConstants.CLEAR_METHOD_DESC, false);
            } else {
                super.visitMethodInsn(opcode, owner, name, desc, itf);
            }
        }
    };
}

From source file:com.github.antag99.retinazer.weaver.ComponentProcessor.java

License:Open Source License

@Override
public void visitEnd() {
    // Generate clear() method
    new MethodVisitor(ASM5, super.visitMethod(ACC_PUBLIC, WeaverConstants.CLEAR_METHOD_NAME,
            WeaverConstants.CLEAR_METHOD_DESC, null, null)) {
        {/*from  w ww. ja  v a2s.co m*/
            visitCode();
            for (ComponentProperty property : metadata.properties) {
                visitVarInsn(ALOAD, 0);

                switch (property.type.getSort()) {
                case Type.BOOLEAN:
                case Type.BYTE:
                case Type.CHAR:
                case Type.SHORT:
                case Type.INT:
                    visitLdcInsn((int) 0);
                    break;
                case Type.FLOAT:
                    visitLdcInsn((float) 0);
                    break;
                case Type.DOUBLE:
                    visitLdcInsn((double) 0);
                    break;
                case Type.LONG:
                    visitLdcInsn((long) 0);
                    break;
                default:
                    visitInsn(ACONST_NULL);
                    break;
                }
                visitFieldInsn(PUTFIELD, metadata.internalName, property.name, property.type.getDescriptor());
            }
            visitInsn(RETURN);
            visitMaxs(-1, -1);
            visitEnd();
        }
    };

    super.visitEnd();
}

From source file:com.github.antag99.retinazer.weaver.MapperGenerator.java

License:Open Source License

@Override
public void accept(ClassVisitor visitor) {
    visitor.visit(V1_7, ACC_PUBLIC + ACC_FINAL + ACC_SYNTHETIC, metadata.getMapperName(),
            "Lcom/github/antag99/retinazer/PackedMapper<L" + metadata.getMapperName() + ";>;",
            "com/github/antag99/retinazer/PackedMapper", null);
    for (ComponentProperty property : metadata.properties) {
        FieldVisitor propertyField = visitor.visitField(ACC_PRIVATE + ACC_FINAL, property.getMetadataName(),
                property.getMetadataDesc(), null, null);
        if (propertyField != null)
            propertyField.visitEnd();/*from ww  w  .j  a  v a  2  s  .c o m*/
    }

    FieldVisitor flyweightField = visitor.visitField(ACC_PRIVATE + ACC_FINAL, "flyweight",
            "L" + metadata.internalName + ";", null, null);
    if (flyweightField != null)
        flyweightField.visitEnd();

    // @off: Formatter mangles the elegant method syntax

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC, "<init>",
            "(Lcom/github/antag99/retinazer/Engine;I)V", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitVarInsn(ALOAD, 1);
            visitLdcInsn(Type.getObjectType(metadata.internalName));
            visitVarInsn(ILOAD, 2);
            visitMethodInsn(Opcodes.INVOKESPECIAL, "com/github/antag99/retinazer/PackedMapper", "<init>",
                    "(Lcom/github/antag99/retinazer/Engine;Ljava/lang/Class;I)V", false);

            for (ComponentProperty property : metadata.properties) {
                visitVarInsn(ALOAD, 0);
                visitTypeInsn(NEW, WeaverConstants.getMetadataName(property.type));
                visitInsn(Opcodes.DUP);
                visitLdcInsn(property.name);
                if (property.type.getSort() == Type.OBJECT) {
                    visitLdcInsn(property.type);
                    visitMethodInsn(INVOKESPECIAL, WeaverConstants.getMetadataName(property.type), "<init>",
                            "(Ljava/lang/String;Ljava/lang/Class;)V", false);
                } else {
                    visitMethodInsn(INVOKESPECIAL, WeaverConstants.getMetadataName(property.type), "<init>",
                            "(Ljava/lang/String;)V", false);
                }
                visitFieldInsn(PUTFIELD, metadata.getMapperName(), property.getMetadataName(),
                        property.getMetadataDesc());
            }

            visitVarInsn(ALOAD, 0);
            visitInsn(DUP);
            visitMethodInsn(INVOKEVIRTUAL, metadata.getMapperName(), "createFlyweight",
                    "()L" + metadata.internalName + ";", false);
            visitFieldInsn(PUTFIELD, metadata.getMapperName(), "flyweight", "L" + metadata.internalName + ";");
            visitInsn(RETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC, "createFlyweight",
            "()L" + metadata.internalName + ";", null, null)) {
        {
            visitCode();
            visitTypeInsn(NEW, metadata.internalName);
            visitInsn(DUP);
            visitMethodInsn(INVOKESPECIAL, metadata.internalName, "<init>", "()V", false);

            for (ComponentProperty property : metadata.properties) {
                visitInsn(DUP);
                visitVarInsn(ALOAD, 0);
                visitFieldInsn(GETFIELD, metadata.getMapperName(), property.getMetadataName(),
                        property.getMetadataDesc());
                visitMethodInsn(INVOKEVIRTUAL, WeaverConstants.getMetadataName(property.type), "getBag",
                        "()" + property.getBagDesc(), false);
                visitFieldInsn(PUTFIELD, metadata.internalName, property.getBagName(), property.getBagDesc());
            }

            visitInsn(ARETURN);

            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5,
            visitor.visitMethod(ACC_PUBLIC, "create", "(I)L" + metadata.internalName + ";", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitVarInsn(ILOAD, 1);
            visitMethodInsn(INVOKEVIRTUAL, "com/github/antag99/retinazer/Mapper", "checkCreate", "(I)V", false);
            visitVarInsn(ALOAD, 0);
            visitVarInsn(ILOAD, 1);
            visitMethodInsn(INVOKEVIRTUAL, metadata.getMapperName(), "get",
                    "(I)L" + metadata.internalName + ";", false);
            visitInsn(DUP);
            visitMethodInsn(INVOKEVIRTUAL, metadata.internalName, WeaverConstants.RESET_METHOD_NAME,
                    WeaverConstants.RESET_METHOD_DESC, false);
            visitInsn(ARETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC + ACC_SYNTHETIC + ACC_BRIDGE, "create",
            "(I)Lcom/github/antag99/retinazer/Component;", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitVarInsn(ILOAD, 1);
            visitMethodInsn(INVOKEVIRTUAL, metadata.getMapperName(), "create",
                    "(I)L" + metadata.internalName + ";", false);
            visitInsn(ARETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5,
            visitor.visitMethod(ACC_PUBLIC, "get", "(I)L" + metadata.internalName + ";", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, metadata.getMapperName(), "flyweight", "L" + metadata.internalName + ";");
            visitInsn(DUP);
            visitVarInsn(ILOAD, 1);
            visitFieldInsn(PUTFIELD, metadata.internalName, WeaverConstants.INDEX_FIELD_NAME,
                    WeaverConstants.INDEX_FIELD_DESC);
            visitInsn(ARETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "get",
            "(I)Lcom/github/antag99/retinazer/Component;", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitVarInsn(ILOAD, 1);
            visitMethodInsn(INVOKEVIRTUAL, metadata.getMapperName(), "get",
                    "(I)L" + metadata.internalName + ";", false);
            visitInsn(ARETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC, "getProperties",
            "()[Lcom/github/antag99/retinazer/util/Property;", null, null)) {
        {
            visitCode();
            visitLdcInsn(metadata.properties.size());
            visitTypeInsn(ANEWARRAY, "com/github/antag99/retinazer/util/Property");

            List<ComponentProperty> properties = metadata.properties;
            for (int i = 0, n = properties.size(); i < n; i++) {
                ComponentProperty property = properties.get(i);
                visitInsn(DUP);
                visitLdcInsn(i);
                visitVarInsn(ALOAD, 0);
                visitFieldInsn(GETFIELD, metadata.getMapperName(), property.getMetadataName(),
                        property.getMetadataDesc());
                visitInsn(AASTORE);
            }

            visitInsn(ARETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    new MethodVisitor(ASM5, visitor.visitMethod(ACC_PUBLIC, "applyComponentChanges", "()V", null, null)) {
        {
            visitCode();
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, "com/github/antag99/retinazer/Mapper", "componentsMask",
                    "Lcom/github/antag99/retinazer/util/Mask;");
            visitVarInsn(ASTORE, 1);
            visitVarInsn(ALOAD, 0);
            visitFieldInsn(GETFIELD, "com/github/antag99/retinazer/Mapper", "removeMask",
                    "Lcom/github/antag99/retinazer/util/Mask;");
            visitVarInsn(ASTORE, 2);
            for (ComponentProperty property : metadata.properties) {
                visitVarInsn(ALOAD, 0);
                visitFieldInsn(GETFIELD, metadata.getMapperName(), property.getMetadataName(),
                        property.getMetadataDesc());
                visitMethodInsn(INVOKEVIRTUAL, WeaverConstants.getMetadataName(property.type), "getBag",
                        "()" + property.getBagDesc(), false);
                visitVarInsn(ALOAD, 2);
                visitMethodInsn(INVOKEVIRTUAL, WeaverConstants.getBagName(property.type), "clear",
                        "(Lcom/github/antag99/retinazer/util/Mask;)V", false);
            }
            visitVarInsn(ALOAD, 1);
            visitVarInsn(ALOAD, 2);
            visitMethodInsn(INVOKEVIRTUAL, "com/github/antag99/retinazer/util/Mask", "andNot",
                    "(Lcom/github/antag99/retinazer/util/Mask;)V", false);
            visitInsn(RETURN);
            visitMaxs(0, 0);
            visitEnd();
        }
    };

    visitor.visitEnd();
}