| #include "generate_java.h" |
| #include "Type.h" |
| #include <string.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| Type* SERVICE_CONTAINER_TYPE = new Type("com.android.athome.service", |
| "AndroidAtHomeServiceContainer", Type::BUILT_IN, false, false); |
| |
| static string |
| format_int(int n) |
| { |
| char str[20]; |
| sprintf(str, "%d", n); |
| return string(str); |
| } |
| |
| static string |
| class_name_leaf(const string& str) |
| { |
| string::size_type pos = str.rfind('.'); |
| if (pos == string::npos) { |
| return str; |
| } else { |
| return string(str, pos+1); |
| } |
| } |
| |
| // ================================================= |
| class RpcProxyClass : public Class |
| { |
| public: |
| RpcProxyClass(const interface_type* iface, InterfaceType* interfaceType); |
| virtual ~RpcProxyClass(); |
| |
| Variable* endpoint; |
| Variable* context; |
| |
| private: |
| void generate_ctor(); |
| }; |
| |
| RpcProxyClass::RpcProxyClass(const interface_type* iface, InterfaceType* interfaceType) |
| :Class() |
| { |
| this->comment = gather_comments(iface->comments_token->extra); |
| this->modifiers = PUBLIC; |
| this->what = Class::CLASS; |
| this->type = interfaceType; |
| |
| // context |
| this->context = new Variable(CONTEXT_TYPE, "_context"); |
| this->elements.push_back(new Field(PRIVATE, this->context)); |
| // endpoint |
| this->endpoint = new Variable(RPC_ENDPOINT_INFO_TYPE, "_endpoint"); |
| this->elements.push_back(new Field(PRIVATE, this->endpoint)); |
| |
| // methods |
| generate_ctor(); |
| } |
| |
| RpcProxyClass::~RpcProxyClass() |
| { |
| } |
| |
| void |
| RpcProxyClass::generate_ctor() |
| { |
| Variable* context = new Variable(CONTEXT_TYPE, "context"); |
| Variable* endpoint = new Variable(RPC_ENDPOINT_INFO_TYPE, "endpoint"); |
| Method* ctor = new Method; |
| ctor->modifiers = PUBLIC; |
| ctor->name = this->type->Name(); |
| ctor->statements = new StatementBlock; |
| ctor->parameters.push_back(context); |
| ctor->parameters.push_back(endpoint); |
| this->elements.push_back(ctor); |
| |
| ctor->statements->Add(new Assignment(this->context, context)); |
| ctor->statements->Add(new Assignment(this->endpoint, endpoint)); |
| } |
| |
| // ================================================= |
| class ServiceBaseClass : public Class |
| { |
| public: |
| ServiceBaseClass(const interface_type* iface); |
| virtual ~ServiceBaseClass(); |
| |
| void AddMethod(const string& methodName, StatementBlock** statements); |
| void DoneWithMethods(); |
| |
| bool needed; |
| Method* processMethod; |
| Variable* actionParam; |
| Variable* errorParam; |
| Variable* requestData; |
| Variable* resultData; |
| IfStatement* dispatchIfStatement; |
| |
| private: |
| void generate_ctor(); |
| void generate_process(); |
| }; |
| |
| ServiceBaseClass::ServiceBaseClass(const interface_type* iface) |
| :Class(), |
| needed(false), |
| dispatchIfStatement(NULL) |
| { |
| this->comment = "/** Extend this to implement a link service. */"; |
| this->modifiers = STATIC | PUBLIC | ABSTRACT; |
| this->what = Class::CLASS; |
| this->type = NAMES.Find(iface->package, append(iface->name.data, ".ServiceBase").c_str()); |
| this->extends = RPC_SERVICE_BASE_TYPE; |
| |
| // methods |
| generate_ctor(); |
| generate_process(); |
| } |
| |
| ServiceBaseClass::~ServiceBaseClass() |
| { |
| } |
| |
| void |
| ServiceBaseClass::generate_ctor() |
| { |
| Variable* container = new Variable(SERVICE_CONTAINER_TYPE, "container"); |
| Variable* name = new Variable(STRING_TYPE, "name"); |
| Variable* type = new Variable(STRING_TYPE, "type"); |
| Variable* version = new Variable(INT_TYPE, "version"); |
| Method* ctor = new Method; |
| ctor->modifiers = PUBLIC; |
| ctor->name = class_name_leaf(this->type->Name()); |
| ctor->statements = new StatementBlock; |
| ctor->parameters.push_back(container); |
| ctor->parameters.push_back(name); |
| ctor->parameters.push_back(type); |
| ctor->parameters.push_back(version); |
| this->elements.push_back(ctor); |
| |
| ctor->statements->Add(new MethodCall("super", 4, container, name, type, version)); |
| } |
| |
| void |
| ServiceBaseClass::generate_process() |
| { |
| // byte[] process(String action, byte[] params, RpcError status) |
| this->processMethod = new Method; |
| this->processMethod->modifiers = PUBLIC; |
| this->processMethod->returnType = BYTE_TYPE; |
| this->processMethod->returnTypeDimension = 1; |
| this->processMethod->name = "process"; |
| this->processMethod->statements = new StatementBlock; |
| this->elements.push_back(this->processMethod); |
| |
| this->actionParam = new Variable(STRING_TYPE, "action"); |
| this->processMethod->parameters.push_back(this->actionParam); |
| |
| Variable* requestParam = new Variable(BYTE_TYPE, "requestParam", 1); |
| this->processMethod->parameters.push_back(requestParam); |
| |
| this->errorParam = new Variable(RPC_ERROR_TYPE, "errorParam", 0); |
| this->processMethod->parameters.push_back(this->errorParam); |
| |
| this->requestData = new Variable(RPC_DATA_TYPE, "request"); |
| this->processMethod->statements->Add(new VariableDeclaration(requestData, |
| new NewExpression(RPC_DATA_TYPE, 1, requestParam))); |
| |
| this->resultData = new Variable(RPC_DATA_TYPE, "response"); |
| this->processMethod->statements->Add(new VariableDeclaration(this->resultData, |
| NULL_VALUE)); |
| } |
| |
| void |
| ServiceBaseClass::AddMethod(const string& methodName, StatementBlock** statements) |
| { |
| IfStatement* ifs = new IfStatement(); |
| ifs->expression = new MethodCall(new StringLiteralExpression(methodName), "equals", 1, |
| this->actionParam); |
| ifs->statements = *statements = new StatementBlock; |
| if (this->dispatchIfStatement == NULL) { |
| this->dispatchIfStatement = ifs; |
| this->processMethod->statements->Add(dispatchIfStatement); |
| } else { |
| this->dispatchIfStatement->elseif = ifs; |
| this->dispatchIfStatement = ifs; |
| } |
| } |
| |
| void |
| ServiceBaseClass::DoneWithMethods() |
| { |
| IfStatement* s = new IfStatement; |
| s->statements = new StatementBlock; |
| this->processMethod->statements->Add(s); |
| s->expression = new Comparison(this->resultData, "!=", NULL_VALUE); |
| s->statements->Add(new ReturnStatement(new MethodCall(this->resultData, "serialize"))); |
| s->elseif = new IfStatement; |
| s = s->elseif; |
| s->statements->Add(new ReturnStatement(NULL_VALUE)); |
| } |
| |
| // ================================================= |
| class ResultDispatcherClass : public Class |
| { |
| public: |
| ResultDispatcherClass(); |
| virtual ~ResultDispatcherClass(); |
| |
| void AddMethod(int index, const string& name, Method** method, Variable** param); |
| |
| bool needed; |
| Variable* methodId; |
| Variable* callback; |
| Method* onResultMethod; |
| Variable* resultParam; |
| SwitchStatement* methodSwitch; |
| |
| private: |
| void generate_ctor(); |
| void generate_onResult(); |
| }; |
| |
| ResultDispatcherClass::ResultDispatcherClass() |
| :Class(), |
| needed(false) |
| { |
| this->modifiers = PRIVATE | FINAL; |
| this->what = Class::CLASS; |
| this->type = new Type("_ResultDispatcher", Type::GENERATED, false, false); |
| this->interfaces.push_back(RPC_RESULT_HANDLER_TYPE); |
| |
| // methodId |
| this->methodId = new Variable(INT_TYPE, "methodId"); |
| this->elements.push_back(new Field(PRIVATE, this->methodId)); |
| this->callback = new Variable(OBJECT_TYPE, "callback"); |
| this->elements.push_back(new Field(PRIVATE, this->callback)); |
| |
| // methods |
| generate_ctor(); |
| generate_onResult(); |
| } |
| |
| ResultDispatcherClass::~ResultDispatcherClass() |
| { |
| } |
| |
| void |
| ResultDispatcherClass::generate_ctor() |
| { |
| Variable* methodIdParam = new Variable(INT_TYPE, "methId"); |
| Variable* callbackParam = new Variable(OBJECT_TYPE, "cbObj"); |
| Method* ctor = new Method; |
| ctor->modifiers = PUBLIC; |
| ctor->name = this->type->Name(); |
| ctor->statements = new StatementBlock; |
| ctor->parameters.push_back(methodIdParam); |
| ctor->parameters.push_back(callbackParam); |
| this->elements.push_back(ctor); |
| |
| ctor->statements->Add(new Assignment(this->methodId, methodIdParam)); |
| ctor->statements->Add(new Assignment(this->callback, callbackParam)); |
| } |
| |
| void |
| ResultDispatcherClass::generate_onResult() |
| { |
| this->onResultMethod = new Method; |
| this->onResultMethod->modifiers = PUBLIC; |
| this->onResultMethod->returnType = VOID_TYPE; |
| this->onResultMethod->returnTypeDimension = 0; |
| this->onResultMethod->name = "onResult"; |
| this->onResultMethod->statements = new StatementBlock; |
| this->elements.push_back(this->onResultMethod); |
| |
| this->resultParam = new Variable(BYTE_TYPE, "result", 1); |
| this->onResultMethod->parameters.push_back(this->resultParam); |
| |
| this->methodSwitch = new SwitchStatement(this->methodId); |
| this->onResultMethod->statements->Add(this->methodSwitch); |
| } |
| |
| void |
| ResultDispatcherClass::AddMethod(int index, const string& name, Method** method, Variable** param) |
| { |
| Method* m = new Method; |
| m->modifiers = PUBLIC; |
| m->returnType = VOID_TYPE; |
| m->returnTypeDimension = 0; |
| m->name = name; |
| m->statements = new StatementBlock; |
| *param = new Variable(BYTE_TYPE, "result", 1); |
| m->parameters.push_back(*param); |
| this->elements.push_back(m); |
| *method = m; |
| |
| Case* c = new Case(format_int(index)); |
| c->statements->Add(new MethodCall(new LiteralExpression("this"), name, 1, this->resultParam)); |
| |
| this->methodSwitch->cases.push_back(c); |
| } |
| |
| // ================================================= |
| static void |
| generate_new_array(Type* t, StatementBlock* addTo, Variable* v, Variable* from) |
| { |
| fprintf(stderr, "aidl: implement generate_new_array %s:%d\n", __FILE__, __LINE__); |
| exit(1); |
| } |
| |
| static void |
| generate_create_from_data(Type* t, StatementBlock* addTo, const string& key, Variable* v, |
| Variable* data, Variable** cl) |
| { |
| Expression* k = new StringLiteralExpression(key); |
| if (v->dimension == 0) { |
| t->CreateFromRpcData(addTo, k, v, data, cl); |
| } |
| if (v->dimension == 1) { |
| //t->ReadArrayFromRpcData(addTo, v, data, cl); |
| fprintf(stderr, "aidl: implement generate_create_from_data for arrays%s:%d\n", |
| __FILE__, __LINE__); |
| } |
| } |
| |
| static void |
| generate_write_to_data(Type* t, StatementBlock* addTo, Expression* k, Variable* v, Variable* data) |
| { |
| if (v->dimension == 0) { |
| t->WriteToRpcData(addTo, k, v, data, 0); |
| } |
| if (v->dimension == 1) { |
| //t->WriteArrayToParcel(addTo, v, data); |
| fprintf(stderr, "aidl: implement generate_write_to_data for arrays%s:%d\n", |
| __FILE__, __LINE__); |
| } |
| } |
| |
| // ================================================= |
| static string |
| results_class_name(const string& n) |
| { |
| string str = n; |
| str[0] = toupper(str[0]); |
| str.insert(0, "On"); |
| return str; |
| } |
| |
| static string |
| results_method_name(const string& n) |
| { |
| string str = n; |
| str[0] = toupper(str[0]); |
| str.insert(0, "on"); |
| return str; |
| } |
| |
| static Type* |
| generate_results_method(const method_type* method, RpcProxyClass* proxyClass) |
| { |
| arg_type* arg; |
| |
| string resultsMethodName = results_method_name(method->name.data); |
| Type* resultsInterfaceType = new Type(results_class_name(method->name.data), |
| Type::GENERATED, false, false); |
| |
| if (!method->oneway) { |
| Class* resultsClass = new Class; |
| resultsClass->modifiers = STATIC | PUBLIC; |
| resultsClass->what = Class::INTERFACE; |
| resultsClass->type = resultsInterfaceType; |
| |
| Method* resultMethod = new Method; |
| resultMethod->comment = gather_comments(method->comments_token->extra); |
| resultMethod->modifiers = PUBLIC; |
| resultMethod->returnType = VOID_TYPE; |
| resultMethod->returnTypeDimension = 0; |
| resultMethod->name = resultsMethodName; |
| if (0 != strcmp("void", method->type.type.data)) { |
| resultMethod->parameters.push_back(new Variable(NAMES.Search(method->type.type.data), |
| "_result", method->type.dimension)); |
| } |
| arg = method->args; |
| while (arg != NULL) { |
| if (convert_direction(arg->direction.data) & OUT_PARAMETER) { |
| resultMethod->parameters.push_back(new Variable( |
| NAMES.Search(arg->type.type.data), arg->name.data, |
| arg->type.dimension)); |
| } |
| arg = arg->next; |
| } |
| resultsClass->elements.push_back(resultMethod); |
| |
| if (resultMethod->parameters.size() > 0) { |
| proxyClass->elements.push_back(resultsClass); |
| return resultsInterfaceType; |
| } |
| } |
| //delete resultsInterfaceType; |
| return NULL; |
| } |
| |
| static void |
| generate_proxy_method(const method_type* method, RpcProxyClass* proxyClass, |
| ResultDispatcherClass* resultsDispatcherClass, Type* resultsInterfaceType, int index) |
| { |
| arg_type* arg; |
| Method* proxyMethod = new Method; |
| proxyMethod->comment = gather_comments(method->comments_token->extra); |
| proxyMethod->modifiers = PUBLIC; |
| proxyMethod->returnType = VOID_TYPE; |
| proxyMethod->returnTypeDimension = 0; |
| proxyMethod->name = method->name.data; |
| proxyMethod->statements = new StatementBlock; |
| proxyClass->elements.push_back(proxyMethod); |
| |
| // The local variables |
| Variable* _data = new Variable(RPC_DATA_TYPE, "_data"); |
| proxyMethod->statements->Add(new VariableDeclaration(_data, new NewExpression(RPC_DATA_TYPE))); |
| |
| // Add the arguments |
| arg = method->args; |
| while (arg != NULL) { |
| if (convert_direction(arg->direction.data) & IN_PARAMETER) { |
| // Function signature |
| Type* t = NAMES.Search(arg->type.type.data); |
| Variable* v = new Variable(t, arg->name.data, arg->type.dimension); |
| proxyMethod->parameters.push_back(v); |
| |
| // Input parameter marshalling |
| generate_write_to_data(t, proxyMethod->statements, |
| new StringLiteralExpression(arg->name.data), v, _data); |
| } |
| arg = arg->next; |
| } |
| |
| // If there is a results interface for this class |
| Expression* resultParameter; |
| if (resultsInterfaceType != NULL) { |
| // Result interface parameter |
| Variable* resultListener = new Variable(resultsInterfaceType, "_result"); |
| proxyMethod->parameters.push_back(resultListener); |
| |
| // Add the results dispatcher callback |
| resultsDispatcherClass->needed = true; |
| resultParameter = new NewExpression(resultsDispatcherClass->type, 2, |
| new LiteralExpression(format_int(index)), resultListener); |
| } else { |
| resultParameter = NULL_VALUE; |
| } |
| |
| // All proxy methods take an error parameter |
| Variable* errorListener = new Variable(RPC_ERROR_LISTENER_TYPE, "_errors"); |
| proxyMethod->parameters.push_back(errorListener); |
| |
| // Call the broker |
| proxyMethod->statements->Add(new MethodCall(RPC_BROKER_TYPE, "sendRequest", 6, |
| new FieldVariable(THIS_VALUE, "_context"), |
| new StringLiteralExpression(method->name.data), |
| proxyClass->endpoint, |
| new MethodCall(_data, "serialize"), |
| resultParameter, |
| errorListener)); |
| } |
| |
| static void |
| generate_result_dispatcher_method(const method_type* method, |
| ResultDispatcherClass* resultsDispatcherClass, Type* resultsInterfaceType, int index) |
| { |
| arg_type* arg; |
| Method* dispatchMethod; |
| Variable* dispatchParam; |
| resultsDispatcherClass->AddMethod(index, method->name.data, &dispatchMethod, &dispatchParam); |
| |
| Variable* classLoader = NULL; |
| Variable* resultData = new Variable(RPC_DATA_TYPE, "resultData"); |
| dispatchMethod->statements->Add(new VariableDeclaration(resultData, |
| new NewExpression(RPC_DATA_TYPE, 1, dispatchParam))); |
| |
| // The callback method itself |
| MethodCall* realCall = new MethodCall( |
| new Cast(resultsInterfaceType, new FieldVariable(THIS_VALUE, "callback")), |
| results_method_name(method->name.data)); |
| |
| // The return value |
| { |
| Type* t = NAMES.Search(method->type.type.data); |
| Variable* rv = new Variable(t, "rv"); |
| dispatchMethod->statements->Add(new VariableDeclaration(rv)); |
| generate_create_from_data(t, dispatchMethod->statements, "_result", rv, |
| resultData, &classLoader); |
| realCall->arguments.push_back(rv); |
| } |
| |
| VariableFactory stubArgs("arg"); |
| arg = method->args; |
| while (arg != NULL) { |
| if (convert_direction(arg->direction.data) & OUT_PARAMETER) { |
| // Unmarshall the results |
| Type* t = NAMES.Search(arg->type.type.data); |
| Variable* v = stubArgs.Get(t); |
| dispatchMethod->statements->Add(new VariableDeclaration(v)); |
| |
| generate_create_from_data(t, dispatchMethod->statements, arg->name.data, v, |
| resultData, &classLoader); |
| |
| // Add the argument to the callback |
| realCall->arguments.push_back(v); |
| } |
| arg = arg->next; |
| } |
| |
| // Call the callback method |
| dispatchMethod->statements->Add(realCall); |
| } |
| |
| static void |
| generate_service_base_methods(const method_type* method, ServiceBaseClass* serviceBaseClass) |
| { |
| arg_type* arg; |
| StatementBlock* block; |
| serviceBaseClass->AddMethod(method->name.data, &block); |
| |
| // The abstract method that the service developers implement |
| Method* decl = new Method; |
| decl->comment = gather_comments(method->comments_token->extra); |
| decl->modifiers = PUBLIC | ABSTRACT; |
| decl->returnType = NAMES.Search(method->type.type.data); |
| decl->returnTypeDimension = method->type.dimension; |
| decl->name = method->name.data; |
| |
| arg = method->args; |
| while (arg != NULL) { |
| decl->parameters.push_back(new Variable( |
| NAMES.Search(arg->type.type.data), arg->name.data, |
| arg->type.dimension)); |
| arg = arg->next; |
| } |
| |
| serviceBaseClass->elements.push_back(decl); |
| |
| // The call to decl (from above) |
| MethodCall* realCall = new MethodCall(THIS_VALUE, method->name.data); |
| |
| // args |
| Variable* classLoader = NULL; |
| VariableFactory stubArgs("_arg"); |
| arg = method->args; |
| while (arg != NULL) { |
| Type* t = NAMES.Search(arg->type.type.data); |
| Variable* v = stubArgs.Get(t); |
| v->dimension = arg->type.dimension; |
| |
| // Unmarshall the parameter |
| block->Add(new VariableDeclaration(v)); |
| if (convert_direction(arg->direction.data) & IN_PARAMETER) { |
| generate_create_from_data(t, block, arg->name.data, v, |
| serviceBaseClass->requestData, &classLoader); |
| } else { |
| if (arg->type.dimension == 0) { |
| block->Add(new Assignment(v, new NewExpression(v->type))); |
| } |
| else if (arg->type.dimension == 1) { |
| generate_new_array(v->type, block, v, serviceBaseClass->requestData); |
| } |
| else { |
| fprintf(stderr, "aidl:internal error %s:%d\n", __FILE__, |
| __LINE__); |
| } |
| } |
| |
| // Add that parameter to the method call |
| realCall->arguments.push_back(v); |
| |
| arg = arg->next; |
| } |
| |
| // the real call |
| Variable* _result = NULL; |
| if (0 == strcmp(method->type.type.data, "void")) { |
| block->Add(realCall); |
| } else { |
| _result = new Variable(decl->returnType, "_result", |
| decl->returnTypeDimension); |
| block->Add(new VariableDeclaration(_result, realCall)); |
| |
| // marshall the return value |
| generate_write_to_data(decl->returnType, block, |
| new StringLiteralExpression("_result"), _result, serviceBaseClass->resultData); |
| } |
| |
| // out parameters |
| int i = 0; |
| arg = method->args; |
| while (arg != NULL) { |
| Type* t = NAMES.Search(arg->type.type.data); |
| Variable* v = stubArgs.Get(i++); |
| |
| if (convert_direction(arg->direction.data) & OUT_PARAMETER) { |
| generate_write_to_data(t, block, new StringLiteralExpression(arg->name.data), |
| v, serviceBaseClass->resultData); |
| } |
| |
| arg = arg->next; |
| } |
| } |
| |
| static void |
| generate_method(const method_type* method, RpcProxyClass* proxyClass, |
| ServiceBaseClass* serviceBaseClass, ResultDispatcherClass* resultsDispatcherClass, |
| int index) |
| { |
| // == the callback interface for results ================================= |
| // the service base class |
| Type* resultsInterfaceType = generate_results_method(method, proxyClass); |
| |
| // == the method in the proxy class ===================================== |
| generate_proxy_method(method, proxyClass, resultsDispatcherClass, resultsInterfaceType, index); |
| |
| // == the method in the result dispatcher class ========================= |
| if (resultsInterfaceType != NULL) { |
| generate_result_dispatcher_method(method, resultsDispatcherClass, resultsInterfaceType, |
| index); |
| } |
| |
| // == the dispatch method in the service base class ====================== |
| generate_service_base_methods(method, serviceBaseClass); |
| } |
| |
| Class* |
| generate_rpc_interface_class(const interface_type* iface) |
| { |
| // the proxy class |
| InterfaceType* interfaceType = static_cast<InterfaceType*>( |
| NAMES.Find(iface->package, iface->name.data)); |
| RpcProxyClass* proxy = new RpcProxyClass(iface, interfaceType); |
| |
| // the service base class |
| ServiceBaseClass* base = new ServiceBaseClass(iface); |
| proxy->elements.push_back(base); |
| |
| // the result dispatcher |
| ResultDispatcherClass* results = new ResultDispatcherClass(); |
| |
| // all the declared methods of the proxy |
| int index = 0; |
| interface_item_type* item = iface->interface_items; |
| while (item != NULL) { |
| if (item->item_type == METHOD_TYPE) { |
| generate_method((method_type*)item, proxy, base, results, index); |
| } |
| item = item->next; |
| index++; |
| } |
| base->DoneWithMethods(); |
| |
| // only add this if there are methods with results / out parameters |
| if (results->needed) { |
| proxy->elements.push_back(results); |
| } |
| |
| return proxy; |
| } |
| |