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How to use visitMethodInsn method of org.evomaster.client.java.instrumentation.coverage.MethodReplacementMethodVisitor class

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.coverage.MethodReplacementMethodVisitor.visitMethodInsn

Source:MethodReplacementMethodVisitor.java

...43        currentLine = line;44        currentIndex = 0; //reset it for current line45    }46    @Override47    public void visitMethodInsn(int opcode, String owner, String name,48                                String desc, boolean itf) {49        //don't instrument static initializers50        if (methodName.equals(Constants.CLASS_INIT_METHOD)) {51            super.visitMethodInsn(opcode, owner, name, desc, itf);52            return;53        }54        /*55         * This is a very special case. This can happen when we replace a method56         * for X.foo() in a class Y, when Y extends X, and then it calls foo in57         * the superclass X with super.foo()58         * As it is now, this would lead to an infinite recursion in the replaced59         * method if we call foo() there (as it would be executed on the instance of Y,60         * not the super method in X).61         * Given an instance of Y, it is not possible to directly call X.foo() from outside Y.62         * TODO: Maybe there can be a general solution for this, but, considering it is likely rare,63         * we can do it for later. Eg, it would mainly affect the use of special containers like64         * in Guava when they have "super.()" calls.65         * For now, we just skip them.66         */67        if (opcode == Opcodes.INVOKESPECIAL) {68            super.visitMethodInsn(opcode, owner, name, desc, itf);69            return;70        }71//        if (!owner.startsWith("java/")) {72//            super.visitMethodInsn(opcode, owner, name, desc, itf);73//            return;74//        }75//76//        /*77//            Loading class here could have side-effects if code is executed in static initializer.78//         */79//        Class<?> klass = null;80//        try {81//            klass = this.getClass().getClassLoader().loadClass(ClassName.get(owner).getFullNameWithDots());82//        } catch (ClassNotFoundException e) {83//            //shouldn't really happen84//            SimpleLogger.error(e.toString());85//            throw new RuntimeException(e);86//        }87        List<MethodReplacementClass> candidateClasses = ReplacementList.getReplacements(owner);88        if (candidateClasses.isEmpty()) {89            super.visitMethodInsn(opcode, owner, name, desc, itf);90            return;91        }92        Optional<Method> r = candidateClasses.stream()93                .flatMap(i -> Stream.of(i.getClass().getDeclaredMethods()))94                .filter(m -> m.getDeclaredAnnotation(Replacement.class) != null)95                .filter(m -> m.getName().equals(name))96                .filter(m -> {97                    Replacement br = m.getAnnotation(Replacement.class);98                    if(!applyTrackingMethods && br.type() == ReplacementType.TRACKER){99                        return false;100                    }101                    int skipFirst = br.replacingStatic() ? 0 : 1;102                    int skipLast = br.type() == ReplacementType.TRACKER ? 0 : 1;103                    return desc.equals(getDescriptor(m, skipFirst, skipLast));104                })105                .findAny();106        if (!r.isPresent()) {107            super.visitMethodInsn(opcode, owner, name, desc, itf);108            return;109        }110        Method m = r.get();111        replaceMethod(m);112        Replacement a = m.getAnnotation(Replacement.class);113        if (a.type() == ReplacementType.TRACKER) {114            UnitsInfoRecorder.markNewTrackedMethod();115        } else {116            if (registerNewTargets) {117                UnitsInfoRecorder.markNewReplacedMethodInSut();118            } else {119                UnitsInfoRecorder.markNewReplacedMethodInThirdParty();120            }121        }122    }123    private void replaceMethod(Method m) {124        Replacement br = m.getAnnotation(Replacement.class);125        /*126                    In the case of replacing a non-static method a.foo(x,y),127                    we will need a replacement bar(a,x,y,id)128                    So, the stack129                    a130                    x131                    y132                    foo # non-static133                    will be replaced by134                    a135                    x136                    y137                    id138                    bar # static139                    This means we do not need to handle "a", but still need to create140                    "id" and replace "foo" with "bar".141        */142        if(br.type() != ReplacementType.TRACKER) {143            //tracker methods do not add a template id144            if (registerNewTargets) {145                String idTemplate = ObjectiveNaming.methodReplacementObjectiveNameTemplate(146                        className, currentLine, currentIndex147                );148                currentIndex++;149                String idTrue = ObjectiveNaming.methodReplacementObjectiveName(idTemplate, true, br.type());150                String idFalse = ObjectiveNaming.methodReplacementObjectiveName(idTemplate, false, br.type());151                ObjectiveRecorder.registerTarget(idTrue);152                ObjectiveRecorder.registerTarget(idFalse);153                this.visitLdcInsn(idTemplate);154            } else {155                //this.visitLdcInsn(null);156                this.visitInsn(Opcodes.ACONST_NULL);157            }158        }159        mv.visitMethodInsn(160                Opcodes.INVOKESTATIC,161                Type.getInternalName(m.getDeclaringClass()),162                m.getName(),163                Type.getMethodDescriptor(m),164                false);165    }166    private static String getDescriptor(Method m, int skipFirsts, int skipLast) {167        Class<?>[] parameters = m.getParameterTypes();168        StringBuilder buf = new StringBuilder();169        buf.append('(');170        //skipping first parameter(s)171        int start = skipFirsts;172        int end = parameters.length - skipLast;173        /*...

visitMethodInsn

Using AI Code Generation

1public class MethodReplacementClassVisitor extends ClassVisitor {2    private String className;3    private String methodName;4    private String methodDesc;5    private String methodReplacementClassName;6    private String methodReplacementMethodName;7    private String methodReplacementMethodDesc;8    public MethodReplacementClassVisitor(int api, ClassVisitor cv, String className, String methodName, String methodDesc, String methodReplacementClassName, String methodReplacementMethodName, String methodReplacementMethodDesc) {9        super(api, cv);10        this.className = className;11        this.methodName = methodName;12        this.methodDesc = methodDesc;13        this.methodReplacementClassName = methodReplacementClassName;14        this.methodReplacementMethodName = methodReplacementMethodName;15        this.methodReplacementMethodDesc = methodReplacementMethodDesc;16    }17    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {18        MethodVisitor mv = cv.visitMethod(access, name, desc, signature, exceptions);19        if (name.equals(methodName) && desc.equals(methodDesc)) {20            mv = new MethodReplacementMethodVisitor(api, mv, className, methodName, methodDesc, methodReplacementClassName, methodReplacementMethodName, methodReplacementMethodDesc);21        }22        return mv;23    }24}25public class MethodReplacementMethodVisitor extends MethodVisitor {26    private String className;27    private String methodName;28    private String methodDesc;29    private String methodReplacementClassName;30    private String methodReplacementMethodName;31    private String methodReplacementMethodDesc;32    public MethodReplacementMethodVisitor(int api, MethodVisitor mv, String className, String methodName, String methodDesc, String methodReplacementClassName, String methodReplacementMethodName, String methodReplacementMethodDesc) {33        super(api, mv);34        this.className = className;35        this.methodName = methodName;36        this.methodDesc = methodDesc;37        this.methodReplacementClassName = methodReplacementClassName;38        this.methodReplacementMethodName = methodReplacementMethodName;39        this.methodReplacementMethodDesc = methodReplacementMethodDesc;40    }41    public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {42        if (owner.equals(className) && name.equals(methodName) && desc.equals

visitMethodInsn

Using AI Code Generation

1public class MethodReplacementMethodVisitor extends MethodVisitor {2    private final String methodName;3    private final String methodDesc;4    private final String methodOwner;5    private final List<MethodReplacement> methodReplacements;6    private final boolean isStatic;7    public MethodReplacementMethodVisitor(int api, MethodVisitor mv, String methodName, String methodDesc, String methodOwner, List<MethodReplacement> methodReplacements, boolean isStatic) {8        super(api, mv);9        this.methodName = methodName;10        this.methodDesc = methodDesc;11        this.methodOwner = methodOwner;12        this.methodReplacements = methodReplacements;13        this.isStatic = isStatic;14    }15    public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {16        if (isStatic && (opcode == Opcodes.INVOKEVIRTUAL || opcode == Opcodes.INVOKEINTERFACE)) {17            super.visitMethodInsn(opcode, owner, name, desc, itf);18            return;19        }20        if (isStatic && opcode == Opcodes.INVOKESPECIAL) {21            super.visitMethodInsn(opcode, owner, name, desc, itf);22            return;23        }24        if (!isStatic && opcode == Opcodes.INVOKESTATIC) {25            super.visitMethodInsn(opcode, owner, name, desc, itf);26            return;27        }28        if (!isStatic && opcode == Opcodes.INVOKESPECIAL && !"<init>".equals(name)) {29            super.visitMethodInsn(opcode, owner, name, desc, itf);30            return;31        }32        if (!isStatic && opcode == Opcodes.INVOKESPECIAL && "<init>".equals(name)) {33            super.visitMethodInsn(opcode, owner, name, desc, itf);34            return;35        }36        for (MethodReplacement mr : methodReplacements) {37            if (mr.matches(owner, name, desc)) {

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