Examples with Parameter java.lang.reflect.Parameter used on opensource projects

Example 91 with Parameter

use of java.lang.reflect.Parameter in project ezyhttp by youngmonkeys.

the class RequestHandlerImplementer method makeHandleRequestMethodContent.

@SuppressWarnings("MethodLength")
protected String makeHandleRequestMethodContent() {
    EzyMethod method = getHandleRequestMethod();
    EzyFunction function = new EzyFunction(method).throwsException();
    EzyBody body = function.body();
    int paramCount = 0;
    int headerCount = 0;
    int parameterCount = 0;
    int pathVariableCount = 0;
    int cookieCount = 0;
    Parameter[] parameters = handlerMethod.getParameters();
    for (Parameter parameter : parameters) {
        Class<?> parameterType = parameter.getType();
        Class<?> genericType = getGenericType(parameter);
        String genericTypeClass = genericType != null ? genericType.getName() + ".class" : "null";
        EzyInstruction instruction = new EzyInstruction("\t", "\n").clazz(parameterType).append(" ").append(PARAMETER_PREFIX).append(paramCount).equal();
        boolean hasAnnotation = false;
        RequestParam requestParamAnno = parameter.getAnnotation(RequestParam.class);
        if (requestParamAnno != null) {
            String paramKey = RequestParamAnnotations.getParamKeyString(requestParamAnno, parameterCount);
            String defaultValue = requestParamAnno.defaultValue();
            String getValueExpression = defaultValue.equals(EzyStrings.NULL) ? "arg0.getParameter(" + paramKey + ")" : "arg0.getParameter(" + paramKey + ", " + quote(defaultValue) + ")";
            String valueExpression = "this.deserializeParameter(" + paramKey + ", " + getValueExpression + ", " + parameterType.getTypeName() + ".class" + ", " + genericTypeClass + ")";
            instruction.cast(parameterType, valueExpression);
            ++parameterCount;
            hasAnnotation = true;
        }
        RequestHeader requestHeaderAnno = parameter.getAnnotation(RequestHeader.class);
        if (requestHeaderAnno != null) {
            String headerKey = RequestHeaderAnnotations.getHeaderKeyString(requestHeaderAnno, headerCount);
            String defaultValue = requestHeaderAnno.defaultValue();
            String getValueExpression = defaultValue.equals(EzyStrings.NULL) ? "arg0.getHeader(" + headerKey + ")" : "arg0.getHeader(" + headerKey + ", " + quote(defaultValue) + ")";
            String valueExpression = "this.deserializeHeader(" + headerKey + ", " + getValueExpression + ", " + parameterType.getTypeName() + ".class" + ", " + genericTypeClass + ")";
            instruction.cast(parameterType, valueExpression);
            ++headerCount;
            hasAnnotation = true;
        }
        PathVariable pathVariableAnno = parameter.getAnnotation(PathVariable.class);
        if (pathVariableAnno != null) {
            String varNameKey = PathVariableAnnotations.getVariableNameKeyString(pathVariableAnno, pathVariableCount);
            String valueExpression = "this.deserializePathVariable(" + varNameKey + ", arg0.getPathVariable(" + varNameKey + ")" + ", " + parameterType.getTypeName() + ".class" + ", " + genericTypeClass + ")";
            instruction.cast(parameterType, valueExpression);
            ++pathVariableCount;
            hasAnnotation = true;
        }
        RequestCookie requestCookieAnno = parameter.getAnnotation(RequestCookie.class);
        if (requestCookieAnno != null) {
            String cookieKey = RequestCookieAnnotations.getCookieKeyString(requestCookieAnno, cookieCount);
            String defaultValue = requestCookieAnno.defaultValue();
            String getValueExpression = defaultValue.equals(EzyStrings.NULL) ? "arg0.getCookieValue(" + cookieKey + ")" : "arg0.getCookieValue(" + cookieKey + ", " + quote(defaultValue) + ")";
            String valueExpression = "this.deserializeCookie(" + cookieKey + ", " + getValueExpression + ", " + parameterType.getTypeName() + ".class" + ", " + genericTypeClass + ")";
            instruction.cast(parameterType, valueExpression);
            ++cookieCount;
            hasAnnotation = true;
        }
        RequestBody requestBodyAnno = parameter.getAnnotation(RequestBody.class);
        if (requestBodyAnno != null) {
            instruction.brackets(parameterType).append("this.deserializeBody(").append("arg0, ").clazz(parameterType, true).append(")");
            hasAnnotation = true;
        }
        if (!hasAnnotation) {
            String valueExpression = "arg0";
            if (parameterType != RequestArguments.class) {
                String argumentKey = RequestParameters.getArgumentKeyString(parameter);
                valueExpression = "arg0.getArgument(" + argumentKey + ")";
            }
            instruction.cast(parameterType, valueExpression);
        }
        body.append(instruction);
        ++paramCount;
    }
    EzyInstruction instruction = new EzyInstruction("\t", "\n");
    Class<?> returnType = handlerMethod.getReturnType();
    if (returnType != void.class) {
        instruction.answer();
    }
    StringBuilder answerExpression = new StringBuilder();
    answerExpression.append("this.controller.").append(handlerMethod.getName()).append("(");
    for (int i = 0; i < paramCount; ++i) {
        answerExpression.append(PARAMETER_PREFIX).append(i);
        if (i < paramCount - 1) {
            answerExpression.append(", ");
        }
    }
    answerExpression.append(")");
    if (returnType != void.class) {
        instruction.valueOf(returnType, answerExpression.toString());
    } else {
        instruction.append(answerExpression);
    }
    body.append(instruction);
    if (returnType == void.class) {
        body.append(new EzyInstruction("\t", "\n").append("return null"));
    }
    return function.toString();
}

Example 92 with Parameter

use of java.lang.reflect.Parameter in project ezyhttp by youngmonkeys.

the class AbstractHandlerImplementer method appendHandleExceptionMethodArguments.

protected void appendHandleExceptionMethodArguments(ExceptionHandlerMethod method, EzyInstruction instruction, Class<?> exceptionClass) {
    int paramCount = 0;
    Parameter[] parameters = method.getParameters();
    for (Parameter parameter : parameters) {
        Class<?> parameterType = parameter.getType();
        if (parameterType == RequestArguments.class) {
            instruction.append("arg0");
        } else if (parameterType == HttpServletRequest.class) {
            instruction.append("arg0.getRequest()");
        } else if (parameterType == HttpServletResponse.class) {
            instruction.append("arg0.getResponse()");
        } else if (Throwable.class.isAssignableFrom(parameterType)) {
            instruction.brackets(exceptionClass).append("arg1");
        } else if (parameterType == boolean.class) {
            instruction.append("false");
        } else if (parameterType.isPrimitive()) {
            instruction.append("0");
        } else {
            instruction.append("null");
        }
        if ((paramCount++) < (parameters.length - 1)) {
            instruction.append(", ");
        }
    }
}

Example 93 with Parameter

use of java.lang.reflect.Parameter in project quarkus by quarkusio.

the class BytecodeRecorderImpl method loadComplexObject.

/**
 * Created a {@link DeferredParameter} to load a complex object, such as a javabean or collection. This is basically
 * just an extension of {@link #loadObjectInstanceImpl(Object, Map, Class, boolean)} but it removes some of the more complex
 * code from that method.
 *
 * @param param The object to load
 * @param existing The existing object map
 * @param expectedType The expected type of the object
 * @param relaxedValidation
 * @return
 */
private DeferredParameter loadComplexObject(Object param, Map<Object, DeferredParameter> existing, Class<?> expectedType, boolean relaxedValidation) {
    // a list of steps that are performed on the object after it has been created
    // we need to create all these first, to ensure the required objects have already
    // been deserialized
    List<SerializationStep> setupSteps = new ArrayList<>();
    List<SerializationStep> ctorSetupSteps = new ArrayList<>();
    boolean relaxedOk = false;
    if (param instanceof Collection) {
        // if this is a collection we want to serialize every element
        for (Object i : (Collection) param) {
            DeferredParameter val = i != null ? loadObjectInstance(i, existing, i.getClass(), relaxedValidation) : loadObjectInstance(null, existing, Object.class, relaxedValidation);
            setupSteps.add(new SerializationStep() {

                @Override
                public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                    // each step can happen in a new method, so it is safe to do this
                    method.invokeInterfaceMethod(COLLECTION_ADD, context.loadDeferred(out), context.loadDeferred(val));
                }

                @Override
                public void prepare(MethodContext context) {
                    // handle the value serialization
                    val.prepare(context);
                }
            });
        }
        relaxedOk = true;
    }
    if (param instanceof Map) {
        // map works the same as collection
        for (Map.Entry<?, ?> i : ((Map<?, ?>) param).entrySet()) {
            DeferredParameter key = loadObjectInstance(i.getKey(), existing, i.getKey().getClass(), relaxedValidation);
            DeferredParameter val = i.getValue() != null ? loadObjectInstance(i.getValue(), existing, i.getValue().getClass(), relaxedValidation) : loadObjectInstance(null, existing, Object.class, relaxedValidation);
            setupSteps.add(new SerializationStep() {

                @Override
                public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                    method.invokeInterfaceMethod(MAP_PUT, context.loadDeferred(out), context.loadDeferred(key), context.loadDeferred(val));
                }

                @Override
                public void prepare(MethodContext context) {
                    key.prepare(context);
                    val.prepare(context);
                }
            });
        }
        relaxedOk = true;
    }
    // check how the object is constructed
    NonDefaultConstructorHolder nonDefaultConstructorHolder = null;
    DeferredParameter[] nonDefaultConstructorHandles = null;
    // used to resolve the parameter position for @RecordableConstructor
    Map<String, Integer> constructorParamNameMap = new HashMap<>();
    if (nonDefaultConstructors.containsKey(param.getClass())) {
        nonDefaultConstructorHolder = nonDefaultConstructors.get(param.getClass());
        List<Object> params = nonDefaultConstructorHolder.paramGenerator.apply(param);
        if (params.size() != nonDefaultConstructorHolder.constructor.getParameterCount()) {
            throw new RuntimeException("Unable to serialize " + param + " as the wrong number of parameters were generated for " + nonDefaultConstructorHolder.constructor);
        }
        int count = 0;
        nonDefaultConstructorHandles = new DeferredParameter[params.size()];
        Class<?>[] parameterTypes = nonDefaultConstructorHolder.constructor.getParameterTypes();
        for (int i = 0; i < params.size(); i++) {
            Object obj = params.get(i);
            nonDefaultConstructorHandles[i] = loadObjectInstance(obj, existing, parameterTypes[count++], relaxedValidation);
        }
    } else if (classesToUseRecorableConstructor.contains(param.getClass())) {
        Constructor<?> current = null;
        int count = 0;
        for (var c : param.getClass().getConstructors()) {
            if (current == null || current.getParameterCount() < c.getParameterCount()) {
                current = c;
                count = 0;
            } else if (current != null && current.getParameterCount() == c.getParameterCount()) {
                count++;
            }
        }
        if (current == null || count > 0) {
            throw new RuntimeException("Unable to determine the recordable constructor to use for " + param.getClass());
        }
        nonDefaultConstructorHolder = new NonDefaultConstructorHolder(current, null);
        nonDefaultConstructorHandles = new DeferredParameter[current.getParameterCount()];
        if (current.getParameterCount() > 0) {
            Parameter[] parameters = current.getParameters();
            for (int i = 0; i < current.getParameterCount(); ++i) {
                String name = parameters[i].getName();
                constructorParamNameMap.put(name, i);
            }
        }
    } else {
        for (Constructor<?> ctor : param.getClass().getConstructors()) {
            if (ctor.isAnnotationPresent(RecordableConstructor.class)) {
                nonDefaultConstructorHolder = new NonDefaultConstructorHolder(ctor, null);
                nonDefaultConstructorHandles = new DeferredParameter[ctor.getParameterCount()];
                if (ctor.getParameterCount() > 0) {
                    Parameter[] ctorParameters = ctor.getParameters();
                    for (int i = 0; i < ctor.getParameterCount(); ++i) {
                        String name = ctorParameters[i].getName();
                        constructorParamNameMap.put(name, i);
                    }
                }
                break;
            }
        }
    }
    Set<String> handledProperties = new HashSet<>();
    Property[] desc = PropertyUtils.getPropertyDescriptors(param);
    for (Property i : desc) {
        if (!i.getDeclaringClass().getPackageName().startsWith("java.")) {
            // check if the getter is ignored
            if ((i.getReadMethod() != null) && (i.getReadMethod().getAnnotation(IgnoreProperty.class) != null)) {
                continue;
            }
            // check if the matching field is ignored
            try {
                if (param.getClass().getDeclaredField(i.getName()).getAnnotation(IgnoreProperty.class) != null) {
                    continue;
                }
            } catch (NoSuchFieldException ignored) {
            }
        }
        Integer ctorParamIndex = constructorParamNameMap.remove(i.name);
        if (i.getReadMethod() != null && i.getWriteMethod() == null && ctorParamIndex == null) {
            try {
                // read only prop, we may still be able to do stuff with it if it is a collection
                if (Collection.class.isAssignableFrom(i.getPropertyType())) {
                    // special case, a collection with only a read method
                    // we assume we can just add to the connection
                    handledProperties.add(i.getName());
                    Collection propertyValue = (Collection) i.read(param);
                    if (propertyValue != null && !propertyValue.isEmpty()) {
                        List<DeferredParameter> params = new ArrayList<>();
                        for (Object c : propertyValue) {
                            DeferredParameter toAdd = loadObjectInstance(c, existing, Object.class, relaxedValidation);
                            params.add(toAdd);
                        }
                        setupSteps.add(new SerializationStep() {

                            @Override
                            public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                                // get the collection
                                ResultHandle prop = method.invokeVirtualMethod(MethodDescriptor.ofMethod(i.getReadMethod()), context.loadDeferred(out));
                                for (DeferredParameter i : params) {
                                    // add the parameter
                                    // TODO: this is not guareded against large collections, probably not an issue in practice
                                    method.invokeInterfaceMethod(COLLECTION_ADD, prop, context.loadDeferred(i));
                                }
                            }

                            @Override
                            public void prepare(MethodContext context) {
                                for (DeferredParameter i : params) {
                                    i.prepare(context);
                                }
                            }
                        });
                    }
                } else if (Map.class.isAssignableFrom(i.getPropertyType())) {
                    // special case, a map with only a read method
                    // we assume we can just add to the map
                    // similar to how collection works above
                    handledProperties.add(i.getName());
                    Map<Object, Object> propertyValue = (Map<Object, Object>) i.read(param);
                    if (propertyValue != null && !propertyValue.isEmpty()) {
                        Map<DeferredParameter, DeferredParameter> def = new LinkedHashMap<>();
                        for (Map.Entry<Object, Object> entry : propertyValue.entrySet()) {
                            DeferredParameter key = loadObjectInstance(entry.getKey(), existing, Object.class, relaxedValidation);
                            DeferredParameter val = loadObjectInstance(entry.getValue(), existing, Object.class, relaxedValidation);
                            def.put(key, val);
                        }
                        setupSteps.add(new SerializationStep() {

                            @Override
                            public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                                ResultHandle prop = method.invokeVirtualMethod(MethodDescriptor.ofMethod(i.getReadMethod()), context.loadDeferred(out));
                                for (Map.Entry<DeferredParameter, DeferredParameter> e : def.entrySet()) {
                                    method.invokeInterfaceMethod(MAP_PUT, prop, context.loadDeferred(e.getKey()), context.loadDeferred(e.getValue()));
                                }
                            }

                            @Override
                            public void prepare(MethodContext context) {
                                for (Map.Entry<DeferredParameter, DeferredParameter> e : def.entrySet()) {
                                    e.getKey().prepare(context);
                                    e.getValue().prepare(context);
                                }
                            }
                        });
                    }
                } else if (!relaxedValidation && !i.getName().equals("class") && !relaxedOk && nonDefaultConstructorHolder == null) {
                    // check if there is actually a field with the name
                    try {
                        i.getReadMethod().getDeclaringClass().getDeclaredField(i.getName());
                        throw new RuntimeException("Cannot serialise field '" + i.getName() + "' on object '" + param + "' as the property is read only");
                    } catch (NoSuchFieldException e) {
                    // if there is no underlying field then we ignore the property
                    }
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        } else if (i.getReadMethod() != null && (i.getWriteMethod() != null || ctorParamIndex != null)) {
            // normal javabean property
            try {
                handledProperties.add(i.getName());
                Object propertyValue = i.read(param);
                if (propertyValue == null && ctorParamIndex == null) {
                    // TODO: is this a valid assumption? Should we check this by creating an instance?
                    continue;
                }
                Class propertyType = i.getPropertyType();
                if (ctorParamIndex == null) {
                    Class<?> getterReturnType = i.getReadMethod().getReturnType();
                    Class<?> setterParameterType = i.getWriteMethod().getParameterTypes()[0];
                    if (getterReturnType != setterParameterType) {
                        if (relaxedValidation) {
                            for (Method m : param.getClass().getMethods()) {
                                if (m.getName().equals(i.getWriteMethod().getName())) {
                                    if (m.getParameterCount() > 0) {
                                        Class<?>[] parameterTypes = m.getParameterTypes();
                                        if (parameterTypes[0].isAssignableFrom(param.getClass())) {
                                            propertyType = parameterTypes[0];
                                            break;
                                        }
                                    }
                                }
                            }
                        } else {
                            throw new RuntimeException("Cannot serialise field '" + i.getName() + "' on object '" + param + "' of type '" + param.getClass().getName() + "' as getter and setter are of different types. Getter type is '" + getterReturnType.getName() + "' while setter type is '" + setterParameterType.getName() + "'.");
                        }
                    }
                }
                DeferredParameter val = loadObjectInstance(propertyValue, existing, i.getPropertyType(), relaxedValidation);
                if (ctorParamIndex != null) {
                    nonDefaultConstructorHandles[ctorParamIndex] = val;
                    ctorSetupSteps.add(new SerializationStep() {

                        @Override
                        public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                        }

                        @Override
                        public void prepare(MethodContext context) {
                            val.prepare(context);
                        }
                    });
                } else {
                    Class finalPropertyType = propertyType;
                    setupSteps.add(new SerializationStep() {

                        @Override
                        public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                            ResultHandle object = context.loadDeferred(out);
                            ResultHandle resultVal = context.loadDeferred(val);
                            method.invokeVirtualMethod(ofMethod(param.getClass(), i.getWriteMethod().getName(), i.getWriteMethod().getReturnType(), finalPropertyType), object, resultVal);
                        }

                        @Override
                        public void prepare(MethodContext context) {
                            val.prepare(context);
                        }
                    });
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }
    // now handle accessible fields
    for (Field field : param.getClass().getFields()) {
        // check if the field is ignored
        if (field.getAnnotation(IgnoreProperty.class) != null) {
            continue;
        }
        if (!handledProperties.contains(field.getName())) {
            Integer ctorParamIndex = constructorParamNameMap.remove(field.getName());
            if ((ctorParamIndex != null || !Modifier.isFinal(field.getModifiers())) && !Modifier.isStatic(field.getModifiers())) {
                try {
                    DeferredParameter val = loadObjectInstance(field.get(param), existing, field.getType(), relaxedValidation);
                    if (ctorParamIndex != null) {
                        nonDefaultConstructorHandles[ctorParamIndex] = val;
                        ctorSetupSteps.add(new SerializationStep() {

                            @Override
                            public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                            }

                            @Override
                            public void prepare(MethodContext context) {
                                val.prepare(context);
                            }
                        });
                    } else {
                        setupSteps.add(new SerializationStep() {

                            @Override
                            public void handle(MethodContext context, MethodCreator method, DeferredArrayStoreParameter out) {
                                method.writeInstanceField(FieldDescriptor.of(param.getClass(), field.getName(), field.getType()), context.loadDeferred(out), context.loadDeferred(val));
                            }

                            @Override
                            public void prepare(MethodContext context) {
                                val.prepare(context);
                            }
                        });
                    }
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }
    if (!constructorParamNameMap.isEmpty()) {
        throw new RuntimeException("Could not find parameters for constructor " + nonDefaultConstructorHolder.constructor + " could not read field values " + constructorParamNameMap.keySet());
    }
    NonDefaultConstructorHolder finalNonDefaultConstructorHolder = nonDefaultConstructorHolder;
    DeferredParameter[] finalCtorHandles = nonDefaultConstructorHandles;
    // create a deferred value to represet the object itself. This allows the creation to be split
    // over multiple methods, which is important if this is a large object
    DeferredArrayStoreParameter objectValue = new DeferredArrayStoreParameter(param, expectedType) {

        @Override
        ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
            ResultHandle out;
            // do the creation
            if (finalNonDefaultConstructorHolder != null) {
                out = method.newInstance(ofConstructor(finalNonDefaultConstructorHolder.constructor.getDeclaringClass(), finalNonDefaultConstructorHolder.constructor.getParameterTypes()), Arrays.stream(finalCtorHandles).map(m -> context.loadDeferred(m)).toArray(ResultHandle[]::new));
            } else {
                if (List.class.isAssignableFrom(param.getClass()) && expectedType == List.class) {
                    // list is a common special case, so let's handle it
                    List listParam = (List) param;
                    if (listParam.isEmpty()) {
                        out = method.newInstance(ofConstructor(ArrayList.class));
                    } else {
                        out = method.newInstance(ofConstructor(ArrayList.class, int.class), method.load(listParam.size()));
                    }
                } else {
                    try {
                        param.getClass().getDeclaredConstructor();
                        out = method.newInstance(ofConstructor(param.getClass()));
                    } catch (NoSuchMethodException e) {
                        // fallback for collection types, such as unmodifiableMap
                        if (SortedMap.class.isAssignableFrom(expectedType)) {
                            out = method.newInstance(ofConstructor(TreeMap.class));
                        } else if (Map.class.isAssignableFrom(expectedType)) {
                            out = method.newInstance(ofConstructor(LinkedHashMap.class));
                        } else if (List.class.isAssignableFrom(expectedType)) {
                            out = method.newInstance(ofConstructor(ArrayList.class));
                        } else if (SortedSet.class.isAssignableFrom(expectedType)) {
                            out = method.newInstance(ofConstructor(TreeSet.class));
                        } else if (Set.class.isAssignableFrom(expectedType)) {
                            out = method.newInstance(ofConstructor(LinkedHashSet.class));
                        } else {
                            throw new RuntimeException("Unable to serialize objects of type " + param.getClass() + " to bytecode as it has no default constructor");
                        }
                    }
                }
            }
            return out;
        }
    };
    // now return the actual deferred parameter that represents the result of construction
    return new DeferredArrayStoreParameter(param, expectedType) {

        @Override
        void doPrepare(MethodContext context) {
            // first create the actial object
            for (SerializationStep i : ctorSetupSteps) {
                i.prepare(context);
            }
            objectValue.prepare(context);
            for (SerializationStep i : setupSteps) {
                // then prepare the steps (i.e. creating the values to be placed into this object)
                i.prepare(context);
                // now actually run the steps (i.e. actually stick the values into the object)
                context.writeInstruction(new InstructionGroup() {

                    @Override
                    public void write(MethodContext context, MethodCreator method, ResultHandle array) {
                        i.handle(context, method, objectValue);
                    }
                });
            }
            super.doPrepare(context);
        }

        @Override
        ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
            // just return the already created object
            return context.loadDeferred(objectValue);
        }
    };
}

Example 94 with Parameter

use of java.lang.reflect.Parameter in project quarkus by quarkusio.

the class BytecodeRecorderImpl method loadObjectInstanceImpl.

/**
 * Returns a representation of a serialized parameter.
 */
private DeferredParameter loadObjectInstanceImpl(Object param, Map<Object, DeferredParameter> existing, Class<?> expectedType, boolean relaxedValidation) {
    // null is easy
    if (param == null) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext creator, MethodCreator method, ResultHandle array) {
                return method.loadNull();
            }
        };
    }
    // check the loaded object support (i.e. config) to see if this is a config item
    DeferredParameter loadedObject = findLoaded(param);
    if (loadedObject != null) {
        return loadedObject;
    }
    // Handle empty collections as returned by the Collections object
    loadedObject = handleCollectionsObjects(param, existing, relaxedValidation);
    if (loadedObject != null) {
        return loadedObject;
    }
    // but some are quite complex when dealing with objects and collections
    if (substitutions.containsKey(param.getClass()) || substitutions.containsKey(expectedType)) {
        // check for substitution types, if present we invoke recursively on the substitution
        SubstitutionHolder holder = substitutions.get(param.getClass());
        if (holder == null) {
            holder = substitutions.get(expectedType);
        }
        try {
            ObjectSubstitution substitution = holder.sub.getDeclaredConstructor().newInstance();
            Object res = substitution.serialize(param);
            DeferredParameter serialized = loadObjectInstance(res, existing, holder.to, relaxedValidation);
            SubstitutionHolder finalHolder = holder;
            return new DeferredArrayStoreParameter(param, expectedType) {

                @Override
                void doPrepare(MethodContext context) {
                    serialized.prepare(context);
                    super.doPrepare(context);
                }

                @Override
                ResultHandle createValue(MethodContext creator, MethodCreator method, ResultHandle array) {
                    ResultHandle subInstance = method.newInstance(MethodDescriptor.ofConstructor(finalHolder.sub));
                    return method.invokeInterfaceMethod(ofMethod(ObjectSubstitution.class, "deserialize", Object.class, Object.class), subInstance, creator.loadDeferred(serialized));
                }
            };
        } catch (Exception e) {
            throw new RuntimeException("Failed to substitute " + param, e);
        }
    } else if (param instanceof Optional) {
        Optional val = (Optional) param;
        if (val.isPresent()) {
            DeferredParameter res = loadObjectInstance(val.get(), existing, Object.class, relaxedValidation);
            return new DeferredArrayStoreParameter(param, expectedType) {

                @Override
                void doPrepare(MethodContext context) {
                    res.prepare(context);
                    super.doPrepare(context);
                }

                @Override
                ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
                    // so we need to use 'ofNullable' and not 'of' here.
                    return method.invokeStaticMethod(ofMethod(Optional.class, "ofNullable", Optional.class, Object.class), context.loadDeferred(res));
                }
            };
        } else {
            return new DeferredArrayStoreParameter(param, expectedType) {

                @Override
                ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
                    return method.invokeStaticMethod(ofMethod(Optional.class, "empty", Optional.class));
                }
            };
        }
    } else if (param instanceof String) {
        if (((String) param).length() > 65535) {
            throw new RuntimeException("String too large to record: " + param);
        }
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((String) param);
            }
        };
    } else if (param instanceof URL) {
        String url = ((URL) param).toExternalForm();
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                AssignableResultHandle value = method.createVariable(URL.class);
                try (TryBlock et = method.tryBlock()) {
                    et.assign(value, et.newInstance(MethodDescriptor.ofConstructor(URL.class, String.class), et.load(url)));
                    try (CatchBlockCreator malformed = et.addCatch(MalformedURLException.class)) {
                        malformed.throwException(RuntimeException.class, "Malformed URL", malformed.getCaughtException());
                    }
                }
                return value;
            }
        };
    } else if (param instanceof Enum) {
        Enum e = (Enum) param;
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                ResultHandle nm = method.load(e.name());
                return method.invokeStaticMethod(ofMethod(e.getDeclaringClass(), "valueOf", e.getDeclaringClass(), String.class), nm);
            }
        };
    } else if (param instanceof ReturnedProxy) {
        // if this is a proxy we just grab the value from the StartupContext
        ReturnedProxy rp = (ReturnedProxy) param;
        if (!rp.__static$$init() && staticInit) {
            throw new RuntimeException("Invalid proxy passed to recorder. " + rp + " was created in a runtime recorder method, while this recorder is for a static init method. The object will not have been created at the time this method is run.");
        }
        String proxyId = rp.__returned$proxy$key();
        // we just load it from the startup context
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.invokeVirtualMethod(ofMethod(StartupContext.class, "getValue", Object.class, String.class), method.getMethodParam(0), method.load(proxyId));
            }
        };
    } else if (param instanceof Duration) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.invokeStaticMethod(ofMethod(Duration.class, "parse", Duration.class, CharSequence.class), method.load(param.toString()));
            }
        };
    } else if (param instanceof Class<?>) {
        if (!((Class) param).isPrimitive()) {
            // Only try to load the class by name if it is not a primitive class
            String name = classProxies.get(param);
            if (name == null) {
                name = ((Class) param).getName();
            }
            String finalName = name;
            return new DeferredParameter() {

                @Override
                ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                    ResultHandle currentThread = method.invokeStaticMethod(ofMethod(Thread.class, "currentThread", Thread.class));
                    ResultHandle tccl = method.invokeVirtualMethod(ofMethod(Thread.class, "getContextClassLoader", ClassLoader.class), currentThread);
                    return method.invokeStaticMethod(ofMethod(Class.class, "forName", Class.class, String.class, boolean.class, ClassLoader.class), method.load(finalName), method.load(true), tccl);
                }
            };
        } else {
            // Else load the primitive type by reference; double.class => Class var9 = Double.TYPE;
            return new DeferredParameter() {

                @Override
                ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                    return method.loadClassFromTCCL((Class) param);
                }
            };
        }
    } else if (expectedType == boolean.class || expectedType == Boolean.class || param instanceof Boolean) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((boolean) param);
            }
        };
    } else if (expectedType == int.class || expectedType == Integer.class || param instanceof Integer) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((int) param);
            }
        };
    } else if (expectedType == short.class || expectedType == Short.class || param instanceof Short) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((short) param);
            }
        };
    } else if (expectedType == byte.class || expectedType == Byte.class || param instanceof Byte) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((byte) param);
            }
        };
    } else if (expectedType == char.class || expectedType == Character.class || param instanceof Character) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((char) param);
            }
        };
    } else if (expectedType == long.class || expectedType == Long.class || param instanceof Long) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((long) param);
            }
        };
    } else if (expectedType == float.class || expectedType == Float.class || param instanceof Float) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((float) param);
            }
        };
    } else if (expectedType == double.class || expectedType == Double.class || param instanceof Double) {
        return new DeferredParameter() {

            @Override
            ResultHandle doLoad(MethodContext context, MethodCreator method, ResultHandle array) {
                return method.load((double) param);
            }
        };
    } else if (expectedType.isArray()) {
        int length = Array.getLength(param);
        DeferredParameter[] components = new DeferredParameter[length];
        for (int i = 0; i < length; ++i) {
            DeferredParameter component = loadObjectInstance(Array.get(param, i), existing, expectedType.getComponentType(), relaxedValidation);
            components[i] = component;
        }
        return new DeferredArrayStoreParameter(param, expectedType) {

            @Override
            void doPrepare(MethodContext context) {
                for (int i = 0; i < length; ++i) {
                    components[i].prepare(context);
                }
                super.doPrepare(context);
            }

            @Override
            ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
                // TODO large arrays can still generate a fair bit of bytecode, and there appears to be a gizmo issue that prevents casting to an array
                // fix this later
                ResultHandle out = method.newArray(expectedType.getComponentType(), length);
                for (int i = 0; i < length; ++i) {
                    method.writeArrayValue(out, i, context.loadDeferred(components[i]));
                }
                return out;
            }
        };
    } else if (param instanceof AnnotationProxy) {
        // new com.foo.MyAnnotation_Proxy_AnnotationLiteral("foo")
        AnnotationProxy annotationProxy = (AnnotationProxy) param;
        List<MethodInfo> constructorParams = annotationProxy.getAnnotationClass().methods().stream().filter(m -> !m.name().equals("<clinit>") && !m.name().equals("<init>")).collect(Collectors.toList());
        Map<String, AnnotationValue> annotationValues = annotationProxy.getAnnotationInstance().values().stream().collect(Collectors.toMap(AnnotationValue::name, Function.identity()));
        DeferredParameter[] constructorParamsHandles = new DeferredParameter[constructorParams.size()];
        for (ListIterator<MethodInfo> iterator = constructorParams.listIterator(); iterator.hasNext(); ) {
            MethodInfo valueMethod = iterator.next();
            Object explicitValue = annotationProxy.getValues().get(valueMethod.name());
            if (explicitValue != null) {
                constructorParamsHandles[iterator.previousIndex()] = loadObjectInstance(explicitValue, existing, explicitValue.getClass(), relaxedValidation);
            } else {
                AnnotationValue value = annotationValues.get(valueMethod.name());
                if (value == null) {
                    // method.invokeInterfaceMethod(MAP_PUT, valuesHandle, method.load(entry.getKey()), loadObjectInstance(method, entry.getValue(),
                    // returnValueResults, entry.getValue().getClass()));
                    Object defaultValue = annotationProxy.getDefaultValues().get(valueMethod.name());
                    if (defaultValue != null) {
                        constructorParamsHandles[iterator.previousIndex()] = loadObjectInstance(defaultValue, existing, defaultValue.getClass(), relaxedValidation);
                        continue;
                    }
                    if (value == null) {
                        value = valueMethod.defaultValue();
                    }
                }
                if (value == null) {
                    throw new NullPointerException("Value not set for " + param);
                }
                DeferredParameter retValue = loadValue(value, annotationProxy.getAnnotationClass(), valueMethod);
                constructorParamsHandles[iterator.previousIndex()] = retValue;
            }
        }
        return new DeferredArrayStoreParameter(annotationProxy.getAnnotationLiteralType()) {

            @Override
            ResultHandle createValue(MethodContext context, MethodCreator method, ResultHandle array) {
                MethodDescriptor constructor = MethodDescriptor.ofConstructor(annotationProxy.getAnnotationLiteralType(), constructorParams.stream().map(m -> m.returnType().name().toString()).toArray());
                ResultHandle[] args = new ResultHandle[constructorParamsHandles.length];
                for (int i = 0; i < constructorParamsHandles.length; i++) {
                    DeferredParameter deferredParameter = constructorParamsHandles[i];
                    if (deferredParameter instanceof DeferredArrayStoreParameter) {
                        DeferredArrayStoreParameter arrayParam = (DeferredArrayStoreParameter) deferredParameter;
                        arrayParam.doPrepare(context);
                    }
                    args[i] = context.loadDeferred(deferredParameter);
                }
                return method.newInstance(constructor, args);
            }
        };
    } else {
        return loadComplexObject(param, existing, expectedType, relaxedValidation);
    }
}

Example 95 with Parameter

use of java.lang.reflect.Parameter in project quarkus by quarkusio.

the class ProxyFactory method doDefineClass.

private void doDefineClass() {
    try (ClassCreator cc = classBuilder.build()) {
        FieldDescriptor invocationHandlerField = cc.getFieldCreator("invocationHandler", InvocationHandler.class).setModifiers(Modifier.PRIVATE).getFieldDescriptor();
        try (MethodCreator ctor = cc.getMethodCreator(MethodDescriptor.ofConstructor(proxyName))) {
            ctor.invokeSpecialMethod(MethodDescriptor.ofConstructor(this.superClassName), ctor.getThis());
            ctor.writeInstanceField(invocationHandlerField, ctor.getThis(), ctor.loadNull());
            ctor.returnValue(null);
        }
        Class<?>[] parameterTypes = injectConstructor.getParameterTypes();
        List<Class<?>> args = new ArrayList<>();
        args.add(InvocationHandler.class);
        args.addAll(Arrays.asList(parameterTypes));
        try (MethodCreator ctor = cc.getMethodCreator(MethodDescriptor.ofConstructor(proxyName, args.toArray(Class[]::new)))) {
            List<ResultHandle> params = new ArrayList<>();
            for (int i = 0; i < injectConstructor.getParameterCount(); ++i) {
                params.add(ctor.getMethodParam(i + 1));
            }
            ctor.invokeSpecialMethod(MethodDescriptor.ofConstructor(injectConstructor.getDeclaringClass(), parameterTypes), ctor.getThis(), params.toArray(ResultHandle[]::new));
            ctor.writeInstanceField(invocationHandlerField, ctor.getThis(), ctor.getMethodParam(0));
            ctor.returnValue(null);
        }
        // proxy each method by forwarding to InvocationHandler
        for (Method methodInfo : methods) {
            try (MethodCreator mc = cc.getMethodCreator(toMethodDescriptor(methodInfo)).setModifiers(Modifier.PUBLIC)) {
                // method = clazz.getDeclaredMethod(...)
                ResultHandle getDeclaredMethodParamsArray = mc.newArray(Class.class, methodInfo.getParameterCount());
                if (methodInfo.getParameterCount() > 0) {
                    Parameter[] methodInfoParameters = methodInfo.getParameters();
                    for (int i = 0; i < methodInfo.getParameterCount(); i++) {
                        ResultHandle paramClass = mc.loadClassFromTCCL(methodInfoParameters[i].getType());
                        mc.writeArrayValue(getDeclaredMethodParamsArray, i, paramClass);
                    }
                }
                ResultHandle method = mc.invokeVirtualMethod(MethodDescriptor.ofMethod(Class.class, "getDeclaredMethod", Method.class, String.class, Class[].class), mc.loadClassFromTCCL(methodInfo.getDeclaringClass()), mc.load(methodInfo.getName()), getDeclaredMethodParamsArray);
                // result = invocationHandler.invoke(...)
                ResultHandle invokeParamsArray = mc.newArray(Object.class, methodInfo.getParameterCount());
                for (int i = 0; i < methodInfo.getParameterCount(); i++) {
                    mc.writeArrayValue(invokeParamsArray, i, mc.getMethodParam(i));
                }
                ResultHandle result = mc.invokeInterfaceMethod(MethodDescriptor.ofMethod(InvocationHandler.class, "invoke", Object.class, Object.class, Method.class, Object[].class), mc.readInstanceField(invocationHandlerField, mc.getThis()), mc.getThis(), method, invokeParamsArray);
                if (void.class.equals(methodInfo.getReturnType())) {
                    mc.returnValue(null);
                } else {
                    mc.returnValue(result);
                }
            }
        }
    }
}