Java 架构师：ASM 已经过时，建议使用类文件 API 简化开发

CodeModel code = ...;Set<ClassDesc> deps = new HashSet<>();for (CodeElement e : code) {    switch (e) {        case FieldInstruction f  -> deps.add(f.owner());        case InvokeInstruction i -> deps.add(i.owner());        // ... and so on for instanceof, cast, etc ...    }}

ClassBuilder classBuilder = ...;classBuilder.withMethod("fooBar", MethodTypeDesc.of(CD_void, CD_boolean, CD_int), flags,    methodBuilder -> methodBuilder.withCode(codeBuilder -> {        Label label1 = codeBuilder.newLabel();        Label label2 = codeBuilder.newLabel();        codeBuilder.iload(1)            .ifeq(label1)            .aload(0)            .iload(2)            .invokevirtual(ClassDesc.of("Foo"), "foo", MethodTypeDesc.of(CD_void, CD_int))            .goto_(label2)            .labelBinding(label1)            .aload(0)            .iload(2)            .invokevirtual(ClassDesc.of("Foo"), "bar", MethodTypeDesc.of(CD_void, CD_int))            .labelBinding(label2)            .return_();    });

ClassFile cf = ClassFile.of();ClassModel classModel = cf.parse(bytes);byte[] newBytes = cf.transform(classModel, (classBuilder, ce) -> {    if (ce instanceof MethodModel mm) {        classBuilder.transformMethod(mm, (methodBuilder, me)-> {            if (me instanceof CodeModel cm) {                methodBuilder.transformCode(cm, (codeBuilder, e) -> {                    switch (e) {                        case InvokeInstruction i                                when i.owner().asInternalName().equals("Foo") ->                            codeBuilder.invokeInstruction(i.opcode(), ClassDesc.of("Bar"),                                                           i.name().stringValue(),                                                          i.typeSymbol(), i.isInterface());                        default -> codeBuilder.with(e);                    }                });            }            else                methodBuilder.with(me);        });    }    else        classBuilder.with(ce);});