/*
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* Copyright (C) 2015, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "generate_cpp.h"
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#include "aidl.h"
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#include <cctype>
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#include <cstring>
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#include <memory>
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#include <random>
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#include <set>
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#include <string>
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#include <android-base/stringprintf.h>
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#include "aidl_language.h"
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#include "aidl_to_cpp.h"
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#include "ast_cpp.h"
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#include "code_writer.h"
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#include "logging.h"
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#include "os.h"
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using android::base::Join;
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using android::base::StringPrintf;
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using std::set;
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using std::string;
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using std::unique_ptr;
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using std::vector;
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namespace android {
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namespace aidl {
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namespace cpp {
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namespace internals {
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namespace {
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const char kAndroidStatusVarName[] = "_aidl_ret_status";
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const char kCodeVarName[] = "_aidl_code";
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const char kFlagsVarName[] = "_aidl_flags";
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const char kDataVarName[] = "_aidl_data";
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const char kErrorLabel[] = "_aidl_error";
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const char kImplVarName[] = "_aidl_impl";
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const char kReplyVarName[] = "_aidl_reply";
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const char kReturnVarName[] = "_aidl_return";
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const char kStatusVarName[] = "_aidl_status";
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const char kTraceVarName[] = "_aidl_trace";
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const char kAndroidParcelLiteral[] = "::android::Parcel";
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const char kAndroidStatusLiteral[] = "::android::status_t";
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const char kAndroidStatusOk[] = "::android::OK";
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const char kBinderStatusLiteral[] = "::android::binder::Status";
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const char kIBinderHeader[] = "binder/IBinder.h";
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const char kIInterfaceHeader[] = "binder/IInterface.h";
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const char kParcelHeader[] = "binder/Parcel.h";
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const char kStatusHeader[] = "binder/Status.h";
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const char kString16Header[] = "utils/String16.h";
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const char kTraceHeader[] = "utils/Trace.h";
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const char kStrongPointerHeader[] = "utils/StrongPointer.h";
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const char kAndroidBaseMacrosHeader[] = "android-base/macros.h";
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unique_ptr<AstNode> BreakOnStatusNotOk() {
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IfStatement* ret = new IfStatement(new Comparison(
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new LiteralExpression(kAndroidStatusVarName), "!=",
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new LiteralExpression(kAndroidStatusOk)));
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ret->OnTrue()->AddLiteral("break");
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return unique_ptr<AstNode>(ret);
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}
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unique_ptr<AstNode> GotoErrorOnBadStatus() {
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IfStatement* ret = new IfStatement(new Comparison(
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new LiteralExpression(kAndroidStatusVarName), "!=",
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new LiteralExpression(kAndroidStatusOk)));
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ret->OnTrue()->AddLiteral(StringPrintf("goto %s", kErrorLabel));
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return unique_ptr<AstNode>(ret);
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}
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unique_ptr<AstNode> ReturnOnStatusNotOk() {
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IfStatement* ret = new IfStatement(new Comparison(new LiteralExpression(kAndroidStatusVarName),
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"!=", new LiteralExpression(kAndroidStatusOk)));
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ret->OnTrue()->AddLiteral(StringPrintf("return %s", kAndroidStatusVarName));
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return unique_ptr<AstNode>(ret);
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}
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ArgList BuildArgList(const TypeNamespace& types, const AidlMethod& method, bool for_declaration,
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bool type_name_only = false) {
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// Build up the argument list for the server method call.
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vector<string> method_arguments;
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for (const unique_ptr<AidlArgument>& a : method.GetArguments()) {
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string literal;
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if (for_declaration) {
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// Method declarations need types, pointers to out params, and variable
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// names that match the .aidl specification.
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const Type* type = a->GetType().GetLanguageType<Type>();
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literal = type->CppType();
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if (a->IsOut()) {
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literal = literal + "*";
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} else {
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// We pass in parameters that are not primitives by const reference.
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// Arrays of primitives are not primitives.
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if (!type->IsCppPrimitive() || a->GetType().IsArray()) {
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literal = "const " + literal + "&";
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}
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}
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if (!type_name_only) {
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literal += " " + a->GetName();
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}
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} else {
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if (a->IsOut()) { literal = "&"; }
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literal += BuildVarName(*a);
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}
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method_arguments.push_back(literal);
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}
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const Type* return_type = method.GetType().GetLanguageType<Type>();
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if (return_type != types.VoidType()) {
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string literal;
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if (for_declaration) {
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literal = StringPrintf("%s* %s", return_type->CppType().c_str(),
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type_name_only ? "" : kReturnVarName);
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} else {
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literal = string{"&"} + kReturnVarName;
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}
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method_arguments.push_back(literal);
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}
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return ArgList(method_arguments);
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}
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unique_ptr<Declaration> BuildMethodDecl(const AidlMethod& method,
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const TypeNamespace& types,
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bool for_interface) {
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uint32_t modifiers = 0;
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if (for_interface) {
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modifiers |= MethodDecl::IS_VIRTUAL;
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modifiers |= MethodDecl::IS_PURE_VIRTUAL;
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} else {
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modifiers |= MethodDecl::IS_OVERRIDE;
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}
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return unique_ptr<Declaration>{
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new MethodDecl{kBinderStatusLiteral,
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method.GetName(),
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BuildArgList(types, method, true /* for method decl */),
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modifiers}};
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}
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unique_ptr<Declaration> BuildMetaMethodDecl(const AidlMethod& method, const TypeNamespace&,
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const Options& options, bool for_interface) {
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CHECK(!method.IsUserDefined());
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if (method.GetName() == kGetInterfaceVersion && options.Version()) {
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std::ostringstream code;
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if (for_interface) {
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code << "virtual ";
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}
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code << "int32_t " << kGetInterfaceVersion << "()";
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if (for_interface) {
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code << " = 0;\n";
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} else {
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code << " override;\n";
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}
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return unique_ptr<Declaration>(new LiteralDecl(code.str()));
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}
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return nullptr;
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}
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std::vector<unique_ptr<Declaration>> NestInNamespaces(vector<unique_ptr<Declaration>> decls,
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const vector<string>& package) {
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auto it = package.crbegin(); // Iterate over the namespaces inner to outer
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for (; it != package.crend(); ++it) {
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vector<unique_ptr<Declaration>> inner;
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inner.emplace_back(unique_ptr<Declaration>{new CppNamespace{*it, std::move(decls)}});
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decls = std::move(inner);
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}
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return decls;
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}
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std::vector<unique_ptr<Declaration>> NestInNamespaces(unique_ptr<Declaration> decl,
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const vector<string>& package) {
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vector<unique_ptr<Declaration>> decls;
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decls.push_back(std::move(decl));
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return NestInNamespaces(std::move(decls), package);
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}
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bool DeclareLocalVariable(const AidlArgument& a, StatementBlock* b) {
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const Type* cpp_type = a.GetType().GetLanguageType<Type>();
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if (!cpp_type) { return false; }
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string type = cpp_type->CppType();
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b->AddLiteral(type + " " + BuildVarName(a));
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return true;
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}
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string BuildHeaderGuard(const AidlDefinedType& defined_type, ClassNames header_type) {
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string class_name = ClassName(defined_type, header_type);
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for (size_t i = 1; i < class_name.size(); ++i) {
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if (isupper(class_name[i])) {
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class_name.insert(i, "_");
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++i;
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}
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}
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string ret = StringPrintf("AIDL_GENERATED_%s_%s_H_", defined_type.GetPackage().c_str(),
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class_name.c_str());
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for (char& c : ret) {
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if (c == '.') {
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c = '_';
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}
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c = toupper(c);
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}
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return ret;
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}
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unique_ptr<Declaration> DefineClientTransaction(const TypeNamespace& types,
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const AidlInterface& interface,
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const AidlMethod& method, const Options& options) {
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const string i_name = ClassName(interface, ClassNames::INTERFACE);
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const string bp_name = ClassName(interface, ClassNames::CLIENT);
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unique_ptr<MethodImpl> ret{new MethodImpl{
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kBinderStatusLiteral, bp_name, method.GetName(),
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ArgList{BuildArgList(types, method, true /* for method decl */)}}};
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StatementBlock* b = ret->GetStatementBlock();
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// Declare parcels to hold our query and the response.
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b->AddLiteral(StringPrintf("%s %s", kAndroidParcelLiteral, kDataVarName));
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// Even if we're oneway, the transact method still takes a parcel.
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b->AddLiteral(StringPrintf("%s %s", kAndroidParcelLiteral, kReplyVarName));
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// Declare the status_t variable we need for error handling.
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b->AddLiteral(StringPrintf("%s %s = %s", kAndroidStatusLiteral,
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kAndroidStatusVarName,
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kAndroidStatusOk));
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// We unconditionally return a Status object.
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b->AddLiteral(StringPrintf("%s %s", kBinderStatusLiteral, kStatusVarName));
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if (options.GenTraces()) {
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b->AddLiteral(
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StringPrintf("ScopedTrace %s(ATRACE_TAG_AIDL, \"%s::%s::cppClient\")",
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kTraceVarName, interface.GetName().c_str(), method.GetName().c_str()));
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}
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if (options.GenLog()) {
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b->AddLiteral(GenLogBeforeExecute(bp_name, method, false /* isServer */, false /* isNdk */),
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false /* no semicolon */);
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}
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// Add the name of the interface we're hoping to call.
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall(StringPrintf("%s.writeInterfaceToken",
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kDataVarName),
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"getInterfaceDescriptor()")));
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b->AddStatement(GotoErrorOnBadStatus());
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for (const auto& a: method.GetArguments()) {
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const Type* type = a->GetType().GetLanguageType<Type>();
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string var_name = ((a->IsOut()) ? "*" : "") + a->GetName();
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var_name = type->WriteCast(var_name);
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if (a->IsIn()) {
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// Serialization looks roughly like:
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// _aidl_ret_status = _aidl_data.WriteInt32(in_param_name);
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// if (_aidl_ret_status != ::android::OK) { goto error; }
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const string& method = type->WriteToParcelMethod();
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall(StringPrintf("%s.%s", kDataVarName, method.c_str()),
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ArgList(var_name))));
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b->AddStatement(GotoErrorOnBadStatus());
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} else if (a->IsOut() && a->GetType().IsArray()) {
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// Special case, the length of the out array is written into the parcel.
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// _aidl_ret_status = _aidl_data.writeVectorSize(&out_param_name);
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// if (_aidl_ret_status != ::android::OK) { goto error; }
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall(StringPrintf("%s.writeVectorSize", kDataVarName),
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ArgList(var_name))));
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b->AddStatement(GotoErrorOnBadStatus());
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}
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}
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// Invoke the transaction on the remote binder and confirm status.
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string transaction_code = GetTransactionIdFor(method);
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vector<string> args = {transaction_code, kDataVarName,
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StringPrintf("&%s", kReplyVarName)};
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if (method.IsOneway()) {
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args.push_back("::android::IBinder::FLAG_ONEWAY");
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}
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall("remote()->transact",
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ArgList(args))));
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// If the method is not implemented in the remote side, try to call the
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// default implementation, if provided.
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vector<string> arg_names;
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for (const auto& a : method.GetArguments()) {
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arg_names.emplace_back(a->GetName());
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}
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if (method.GetType().GetLanguageType<Type>() != types.VoidType()) {
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arg_names.emplace_back(kReturnVarName);
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}
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b->AddLiteral(StringPrintf("if (UNLIKELY(_aidl_ret_status == ::android::UNKNOWN_TRANSACTION && "
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"%s::getDefaultImpl())) {\n"
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" return %s::getDefaultImpl()->%s(%s);\n"
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"}\n",
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i_name.c_str(), i_name.c_str(), method.GetName().c_str(),
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Join(arg_names, ", ").c_str()),
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false /* no semicolon */);
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b->AddStatement(GotoErrorOnBadStatus());
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if (!method.IsOneway()) {
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// Strip off the exception header and fail if we see a remote exception.
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// _aidl_ret_status = _aidl_status.readFromParcel(_aidl_reply);
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// if (_aidl_ret_status != ::android::OK) { goto error; }
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// if (!_aidl_status.isOk()) { return _aidl_ret_status; }
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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StringPrintf("%s.readFromParcel(%s)", kStatusVarName, kReplyVarName)));
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b->AddStatement(GotoErrorOnBadStatus());
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IfStatement* exception_check = new IfStatement(
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new LiteralExpression(StringPrintf("!%s.isOk()", kStatusVarName)));
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b->AddStatement(exception_check);
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exception_check->OnTrue()->AddLiteral(
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StringPrintf("return %s", kStatusVarName));
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}
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// Type checking should guarantee that nothing below emits code until "return
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// status" if we are a oneway method, so no more fear of accessing reply.
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// If the method is expected to return something, read it first by convention.
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const Type* return_type = method.GetType().GetLanguageType<Type>();
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if (return_type != types.VoidType()) {
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const string& method_call = return_type->ReadFromParcelMethod();
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall(StringPrintf("%s.%s", kReplyVarName,
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method_call.c_str()),
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ArgList(kReturnVarName))));
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b->AddStatement(GotoErrorOnBadStatus());
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}
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for (const AidlArgument* a : method.GetOutArguments()) {
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// Deserialization looks roughly like:
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// _aidl_ret_status = _aidl_reply.ReadInt32(out_param_name);
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// if (_aidl_status != ::android::OK) { goto _aidl_error; }
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string method =
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a->GetType().GetLanguageType<Type>()->ReadFromParcelMethod();
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b->AddStatement(new Assignment(
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kAndroidStatusVarName,
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new MethodCall(StringPrintf("%s.%s", kReplyVarName,
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method.c_str()),
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ArgList(a->GetName()))));
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b->AddStatement(GotoErrorOnBadStatus());
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}
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// If we've gotten to here, one of two things is true:
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// 1) We've read some bad status_t
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// 2) We've only read status_t == OK and there was no exception in the
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// response.
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// In both cases, we're free to set Status from the status_t and return.
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b->AddLiteral(StringPrintf("%s:\n", kErrorLabel), false /* no semicolon */);
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b->AddLiteral(
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StringPrintf("%s.setFromStatusT(%s)", kStatusVarName,
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kAndroidStatusVarName));
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if (options.GenLog()) {
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b->AddLiteral(GenLogAfterExecute(bp_name, interface, method, kStatusVarName, kReturnVarName,
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false /* isServer */, false /* isNdk */),
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false /* no semicolon */);
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}
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b->AddLiteral(StringPrintf("return %s", kStatusVarName));
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return unique_ptr<Declaration>(ret.release());
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}
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unique_ptr<Declaration> DefineClientMetaTransaction(const TypeNamespace&,
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const AidlInterface& interface,
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const AidlMethod& method,
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const Options& options) {
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CHECK(!method.IsUserDefined());
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if (method.GetName() == kGetInterfaceVersion && options.Version() > 0) {
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const string iface = ClassName(interface, ClassNames::INTERFACE);
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const string proxy = ClassName(interface, ClassNames::CLIENT);
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// Note: race condition can happen here, but no locking is required
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// because 1) writing an interger is atomic and 2) this transaction
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// will always return the same value, i.e., competing threads will
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// give write the same value to cached_version_.
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std::ostringstream code;
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code << "int32_t " << proxy << "::" << kGetInterfaceVersion << "() {\n"
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<< " if (cached_version_ == -1) {\n"
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<< " ::android::Parcel data;\n"
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<< " ::android::Parcel reply;\n"
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<< " data.writeInterfaceToken(getInterfaceDescriptor());\n"
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<< " ::android::status_t err = remote()->transact(" << GetTransactionIdFor(method)
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<< ", data, &reply);\n"
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<< " if (err == ::android::OK) {\n"
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<< " ::android::binder::Status _aidl_status;\n"
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<< " err = _aidl_status.readFromParcel(reply);\n"
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<< " if (err == ::android::OK && _aidl_status.isOk()) {\n"
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<< " cached_version_ = reply.readInt32();\n"
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<< " }\n"
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<< " }\n"
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<< " }\n"
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<< " return cached_version_;\n"
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<< "}\n";
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return unique_ptr<Declaration>(new LiteralDecl(code.str()));
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}
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return nullptr;
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}
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} // namespace
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unique_ptr<Document> BuildClientSource(const TypeNamespace& types, const AidlInterface& interface,
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const Options& options) {
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vector<string> include_list = {
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HeaderFile(interface, ClassNames::CLIENT, false),
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kParcelHeader,
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kAndroidBaseMacrosHeader
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};
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if (options.GenLog()) {
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include_list.emplace_back("chrono");
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include_list.emplace_back("functional");
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include_list.emplace_back("json/value.h");
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}
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vector<unique_ptr<Declaration>> file_decls;
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// The constructor just passes the IBinder instance up to the super
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// class.
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const string i_name = ClassName(interface, ClassNames::INTERFACE);
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file_decls.push_back(unique_ptr<Declaration>{new ConstructorImpl{
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ClassName(interface, ClassNames::CLIENT),
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ArgList{StringPrintf("const ::android::sp<::android::IBinder>& %s",
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kImplVarName)},
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{ "BpInterface<" + i_name + ">(" + kImplVarName + ")" }}});
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if (options.GenLog()) {
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string code;
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ClassName(interface, ClassNames::CLIENT);
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CodeWriterPtr writer = CodeWriter::ForString(&code);
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(*writer) << "std::function<void(const Json::Value&)> "
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<< ClassName(interface, ClassNames::CLIENT) << "::logFunc;\n";
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writer->Close();
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file_decls.push_back(unique_ptr<Declaration>(new LiteralDecl(code)));
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}
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// Clients define a method per transaction.
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for (const auto& method : interface.GetMethods()) {
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unique_ptr<Declaration> m;
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if (method->IsUserDefined()) {
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m = DefineClientTransaction(types, interface, *method, options);
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} else {
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m = DefineClientMetaTransaction(types, interface, *method, options);
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}
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if (!m) { return nullptr; }
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file_decls.push_back(std::move(m));
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}
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return unique_ptr<Document>{new CppSource{
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include_list,
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NestInNamespaces(std::move(file_decls), interface.GetSplitPackage())}};
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}
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namespace {
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bool HandleServerTransaction(const TypeNamespace& types, const AidlInterface& interface,
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const AidlMethod& method, const Options& options, StatementBlock* b) {
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// Declare all the parameters now. In the common case, we expect no errors
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// in serialization.
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for (const unique_ptr<AidlArgument>& a : method.GetArguments()) {
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if (!DeclareLocalVariable(*a, b)) {
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return false;
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}
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}
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// Declare a variable to hold the return value.
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const Type* return_type = method.GetType().GetLanguageType<Type>();
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if (return_type != types.VoidType()) {
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b->AddLiteral(StringPrintf(
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"%s %s", return_type->CppType().c_str(),
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kReturnVarName));
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}
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// Check that the client is calling the correct interface.
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IfStatement* interface_check = new IfStatement(
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new MethodCall(StringPrintf("%s.checkInterface",
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kDataVarName), "this"),
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true /* invert the check */);
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b->AddStatement(interface_check);
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interface_check->OnTrue()->AddStatement(
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new Assignment(kAndroidStatusVarName, "::android::BAD_TYPE"));
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interface_check->OnTrue()->AddLiteral("break");
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// Deserialize each "in" parameter to the transaction.
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for (const auto& a: method.GetArguments()) {
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// Deserialization looks roughly like:
|
// _aidl_ret_status = _aidl_data.ReadInt32(&in_param_name);
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// if (_aidl_ret_status != ::android::OK) { break; }
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const Type* type = a->GetType().GetLanguageType<Type>();
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const string& readMethod = type->ReadFromParcelMethod();
|
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if (a->IsIn()) {
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b->AddStatement(new Assignment{
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kAndroidStatusVarName,
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new MethodCall{string(kDataVarName) + "." + readMethod,
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"&" + BuildVarName(*a)}});
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b->AddStatement(BreakOnStatusNotOk());
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} else if (a->IsOut() && a->GetType().IsArray()) {
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// Special case, the length of the out array is written into the parcel.
|
// _aidl_ret_status = _aidl_data.resizeOutVector(&out_param_name);
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// if (_aidl_ret_status != ::android::OK) { break; }
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b->AddStatement(new Assignment{
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kAndroidStatusVarName,
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new MethodCall{string(kDataVarName) + ".resizeOutVector",
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"&" + BuildVarName(*a)}});
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b->AddStatement(BreakOnStatusNotOk());
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}
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}
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if (options.GenTraces()) {
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b->AddStatement(new Statement(new MethodCall("atrace_begin",
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ArgList{{"ATRACE_TAG_AIDL",
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StringPrintf("\"%s::%s::cppServer\"",
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interface.GetName().c_str(),
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method.GetName().c_str())}})));
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}
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const string bn_name = ClassName(interface, ClassNames::SERVER);
|
if (options.GenLog()) {
|
b->AddLiteral(GenLogBeforeExecute(bn_name, method, true /* isServer */, false /* isNdk */),
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false);
|
}
|
// Call the actual method. This is implemented by the subclass.
|
vector<unique_ptr<AstNode>> status_args;
|
status_args.emplace_back(new MethodCall(
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method.GetName(),
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BuildArgList(types, method, false /* not for method decl */)));
|
b->AddStatement(new Statement(new MethodCall(
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StringPrintf("%s %s", kBinderStatusLiteral, kStatusVarName),
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ArgList(std::move(status_args)))));
|
|
if (options.GenTraces()) {
|
b->AddStatement(new Statement(new MethodCall("atrace_end",
|
"ATRACE_TAG_AIDL")));
|
}
|
|
if (options.GenLog()) {
|
b->AddLiteral(GenLogAfterExecute(bn_name, interface, method, kStatusVarName, kReturnVarName,
|
true /* isServer */, false /* isNdk */),
|
false);
|
}
|
|
// Write exceptions during transaction handling to parcel.
|
if (!method.IsOneway()) {
|
b->AddStatement(new Assignment(
|
kAndroidStatusVarName,
|
StringPrintf("%s.writeToParcel(%s)", kStatusVarName, kReplyVarName)));
|
b->AddStatement(BreakOnStatusNotOk());
|
IfStatement* exception_check = new IfStatement(
|
new LiteralExpression(StringPrintf("!%s.isOk()", kStatusVarName)));
|
b->AddStatement(exception_check);
|
exception_check->OnTrue()->AddLiteral("break");
|
}
|
|
// If we have a return value, write it first.
|
if (return_type != types.VoidType()) {
|
string writeMethod =
|
string(kReplyVarName) + "->" +
|
return_type->WriteToParcelMethod();
|
b->AddStatement(new Assignment{
|
kAndroidStatusVarName, new MethodCall{writeMethod,
|
ArgList{return_type->WriteCast(kReturnVarName)}}});
|
b->AddStatement(BreakOnStatusNotOk());
|
}
|
// Write each out parameter to the reply parcel.
|
for (const AidlArgument* a : method.GetOutArguments()) {
|
// Serialization looks roughly like:
|
// _aidl_ret_status = data.WriteInt32(out_param_name);
|
// if (_aidl_ret_status != ::android::OK) { break; }
|
const Type* type = a->GetType().GetLanguageType<Type>();
|
const string& writeMethod = type->WriteToParcelMethod();
|
|
b->AddStatement(new Assignment{
|
kAndroidStatusVarName,
|
new MethodCall{string(kReplyVarName) + "->" + writeMethod,
|
type->WriteCast(BuildVarName(*a))}});
|
b->AddStatement(BreakOnStatusNotOk());
|
}
|
|
return true;
|
}
|
|
bool HandleServerMetaTransaction(const TypeNamespace&, const AidlInterface& interface,
|
const AidlMethod& method, const Options& options,
|
StatementBlock* b) {
|
CHECK(!method.IsUserDefined());
|
|
if (method.GetName() == kGetInterfaceVersion && options.Version() > 0) {
|
std::ostringstream code;
|
code << "_aidl_data.checkInterface(this);\n"
|
<< "_aidl_reply->writeNoException();\n"
|
<< "_aidl_reply->writeInt32(" << ClassName(interface, ClassNames::INTERFACE)
|
<< "::VERSION)";
|
b->AddLiteral(code.str());
|
return true;
|
}
|
return false;
|
}
|
|
} // namespace
|
|
unique_ptr<Document> BuildServerSource(const TypeNamespace& types, const AidlInterface& interface,
|
const Options& options) {
|
const string bn_name = ClassName(interface, ClassNames::SERVER);
|
vector<string> include_list{
|
HeaderFile(interface, ClassNames::SERVER, false),
|
kParcelHeader
|
};
|
if (options.GenLog()) {
|
include_list.emplace_back("chrono");
|
include_list.emplace_back("functional");
|
include_list.emplace_back("json/value.h");
|
}
|
unique_ptr<MethodImpl> on_transact{new MethodImpl{
|
kAndroidStatusLiteral, bn_name, "onTransact",
|
ArgList{{StringPrintf("uint32_t %s", kCodeVarName),
|
StringPrintf("const %s& %s", kAndroidParcelLiteral,
|
kDataVarName),
|
StringPrintf("%s* %s", kAndroidParcelLiteral, kReplyVarName),
|
StringPrintf("uint32_t %s", kFlagsVarName)}}
|
}};
|
|
// Declare the status_t variable
|
on_transact->GetStatementBlock()->AddLiteral(
|
StringPrintf("%s %s = %s", kAndroidStatusLiteral, kAndroidStatusVarName,
|
kAndroidStatusOk));
|
|
// Add the all important switch statement, but retain a pointer to it.
|
SwitchStatement* s = new SwitchStatement{kCodeVarName};
|
on_transact->GetStatementBlock()->AddStatement(s);
|
|
// The switch statement has a case statement for each transaction code.
|
for (const auto& method : interface.GetMethods()) {
|
StatementBlock* b = s->AddCase(GetTransactionIdFor(*method));
|
if (!b) { return nullptr; }
|
|
bool success = false;
|
if (method->IsUserDefined()) {
|
success = HandleServerTransaction(types, interface, *method, options, b);
|
} else {
|
success = HandleServerMetaTransaction(types, interface, *method, options, b);
|
}
|
if (!success) {
|
return nullptr;
|
}
|
}
|
|
// The switch statement has a default case which defers to the super class.
|
// The superclass handles a few pre-defined transactions.
|
StatementBlock* b = s->AddCase("");
|
b->AddLiteral(StringPrintf(
|
"%s = ::android::BBinder::onTransact(%s, %s, "
|
"%s, %s)", kAndroidStatusVarName, kCodeVarName,
|
kDataVarName, kReplyVarName, kFlagsVarName));
|
|
// If we saw a null reference, we can map that to an appropriate exception.
|
IfStatement* null_check = new IfStatement(
|
new LiteralExpression(string(kAndroidStatusVarName) +
|
" == ::android::UNEXPECTED_NULL"));
|
on_transact->GetStatementBlock()->AddStatement(null_check);
|
null_check->OnTrue()->AddStatement(new Assignment(
|
kAndroidStatusVarName,
|
StringPrintf("%s::fromExceptionCode(%s::EX_NULL_POINTER)"
|
".writeToParcel(%s)",
|
kBinderStatusLiteral, kBinderStatusLiteral,
|
kReplyVarName)));
|
|
// Finally, the server's onTransact method just returns a status code.
|
on_transact->GetStatementBlock()->AddLiteral(
|
StringPrintf("return %s", kAndroidStatusVarName));
|
vector<unique_ptr<Declaration>> decls;
|
decls.push_back(std::move(on_transact));
|
|
if (options.Version() > 0) {
|
std::ostringstream code;
|
code << "int32_t " << bn_name << "::" << kGetInterfaceVersion << "() {\n"
|
<< " return " << ClassName(interface, ClassNames::INTERFACE) << "::VERSION;\n"
|
<< "}\n";
|
decls.emplace_back(new LiteralDecl(code.str()));
|
}
|
|
if (options.GenLog()) {
|
string code;
|
ClassName(interface, ClassNames::SERVER);
|
CodeWriterPtr writer = CodeWriter::ForString(&code);
|
(*writer) << "std::function<void(const Json::Value&)> "
|
<< ClassName(interface, ClassNames::SERVER) << "::logFunc;\n";
|
writer->Close();
|
decls.push_back(unique_ptr<Declaration>(new LiteralDecl(code)));
|
}
|
return unique_ptr<Document>{
|
new CppSource{include_list, NestInNamespaces(std::move(decls), interface.GetSplitPackage())}};
|
}
|
|
unique_ptr<Document> BuildInterfaceSource(const TypeNamespace& types,
|
const AidlInterface& interface, const Options& options) {
|
vector<string> include_list{
|
HeaderFile(interface, ClassNames::RAW, false),
|
HeaderFile(interface, ClassNames::CLIENT, false),
|
};
|
|
string fq_name = ClassName(interface, ClassNames::INTERFACE);
|
if (!interface.GetPackage().empty()) {
|
fq_name = interface.GetPackage() + "." + fq_name;
|
}
|
|
vector<unique_ptr<Declaration>> decls;
|
|
unique_ptr<MacroDecl> meta_if{new MacroDecl{
|
"IMPLEMENT_META_INTERFACE",
|
ArgList{vector<string>{ClassName(interface, ClassNames::BASE),
|
'"' + fq_name + '"'}}}};
|
decls.push_back(std::move(meta_if));
|
|
for (const auto& constant : interface.GetConstantDeclarations()) {
|
const AidlConstantValue& value = constant->GetValue();
|
if (value.GetType() != AidlConstantValue::Type::STRING) continue;
|
|
std::string cppType = constant->GetType().GetLanguageType<Type>()->CppType();
|
|
unique_ptr<MethodImpl> getter(new MethodImpl("const " + cppType + "&",
|
ClassName(interface, ClassNames::INTERFACE),
|
constant->GetName(), {}));
|
getter->GetStatementBlock()->AddLiteral(
|
StringPrintf("static const %s value(%s)", cppType.c_str(),
|
constant->ValueString(ConstantValueDecorator).c_str()));
|
getter->GetStatementBlock()->AddLiteral("return value");
|
decls.push_back(std::move(getter));
|
}
|
|
// Implement the default impl class.
|
// onAsBinder returns nullptr as this interface is not associated with a
|
// real binder.
|
const string default_impl(ClassName(interface, ClassNames::DEFAULT_IMPL));
|
decls.emplace_back(
|
new LiteralDecl(StringPrintf("::android::IBinder* %s::onAsBinder() {\n"
|
" return nullptr;\n"
|
"}\n",
|
default_impl.c_str())));
|
// Each interface method by default returns UNKNOWN_TRANSACTION with is
|
// the same status that is returned by transact() when the method is
|
// not implemented in the server side. In other words, these default
|
// methods do nothing; they only exist to aid making a real default
|
// impl class without having to override all methods in an interface.
|
for (const auto& method : interface.GetMethods()) {
|
if (method->IsUserDefined()) {
|
std::ostringstream code;
|
code << "::android::binder::Status " << default_impl << "::" << method->GetName()
|
<< BuildArgList(types, *method, true, true).ToString() << " {\n"
|
<< " return ::android::binder::Status::fromStatusT(::android::UNKNOWN_TRANSACTION);\n"
|
<< "}\n";
|
decls.emplace_back(new LiteralDecl(code.str()));
|
} else {
|
if (method->GetName() == kGetInterfaceVersion && options.Version() > 0) {
|
std::ostringstream code;
|
code << "int32_t " << default_impl << "::" << kGetInterfaceVersion << "() {\n"
|
<< " return 0;\n"
|
<< "}\n";
|
decls.emplace_back(new LiteralDecl(code.str()));
|
}
|
}
|
}
|
|
return unique_ptr<Document>{new CppSource{
|
include_list,
|
NestInNamespaces(std::move(decls), interface.GetSplitPackage())}};
|
}
|
|
unique_ptr<Document> BuildClientHeader(const TypeNamespace& types, const AidlInterface& interface,
|
const Options& options) {
|
const string i_name = ClassName(interface, ClassNames::INTERFACE);
|
const string bp_name = ClassName(interface, ClassNames::CLIENT);
|
|
vector<string> includes = {kIBinderHeader, kIInterfaceHeader, "utils/Errors.h",
|
HeaderFile(interface, ClassNames::RAW, false)};
|
|
unique_ptr<ConstructorDecl> constructor{new ConstructorDecl{
|
bp_name,
|
ArgList{StringPrintf("const ::android::sp<::android::IBinder>& %s",
|
kImplVarName)},
|
ConstructorDecl::IS_EXPLICIT
|
}};
|
unique_ptr<ConstructorDecl> destructor{new ConstructorDecl{
|
"~" + bp_name,
|
ArgList{},
|
ConstructorDecl::IS_VIRTUAL | ConstructorDecl::IS_DEFAULT}};
|
|
vector<unique_ptr<Declaration>> publics;
|
publics.push_back(std::move(constructor));
|
publics.push_back(std::move(destructor));
|
|
for (const auto& method: interface.GetMethods()) {
|
if (method->IsUserDefined()) {
|
publics.push_back(BuildMethodDecl(*method, types, false));
|
} else {
|
publics.push_back(BuildMetaMethodDecl(*method, types, options, false));
|
}
|
}
|
|
if (options.GenLog()) {
|
includes.emplace_back("chrono"); // for std::chrono::steady_clock
|
includes.emplace_back("functional"); // for std::function
|
includes.emplace_back("json/value.h");
|
publics.emplace_back(
|
new LiteralDecl{"static std::function<void(const Json::Value&)> logFunc;\n"});
|
}
|
|
vector<unique_ptr<Declaration>> privates;
|
|
if (options.Version() > 0) {
|
privates.emplace_back(new LiteralDecl("int32_t cached_version_ = -1;\n"));
|
}
|
|
unique_ptr<ClassDecl> bp_class{new ClassDecl{
|
bp_name,
|
"::android::BpInterface<" + i_name + ">",
|
std::move(publics),
|
std::move(privates),
|
}};
|
|
return unique_ptr<Document>{
|
new CppHeader{BuildHeaderGuard(interface, ClassNames::CLIENT), includes,
|
NestInNamespaces(std::move(bp_class), interface.GetSplitPackage())}};
|
}
|
|
unique_ptr<Document> BuildServerHeader(const TypeNamespace& /* types */,
|
const AidlInterface& interface, const Options& options) {
|
const string i_name = ClassName(interface, ClassNames::INTERFACE);
|
const string bn_name = ClassName(interface, ClassNames::SERVER);
|
|
unique_ptr<Declaration> on_transact{new MethodDecl{
|
kAndroidStatusLiteral, "onTransact",
|
ArgList{{StringPrintf("uint32_t %s", kCodeVarName),
|
StringPrintf("const %s& %s", kAndroidParcelLiteral,
|
kDataVarName),
|
StringPrintf("%s* %s", kAndroidParcelLiteral, kReplyVarName),
|
StringPrintf("uint32_t %s", kFlagsVarName)}},
|
MethodDecl::IS_OVERRIDE
|
}};
|
vector<string> includes = {"binder/IInterface.h", HeaderFile(interface, ClassNames::RAW, false)};
|
|
vector<unique_ptr<Declaration>> publics;
|
publics.push_back(std::move(on_transact));
|
|
if (options.Version() > 0) {
|
std::ostringstream code;
|
code << "int32_t " << kGetInterfaceVersion << "() final override;\n";
|
publics.emplace_back(new LiteralDecl(code.str()));
|
}
|
|
if (options.GenLog()) {
|
includes.emplace_back("chrono"); // for std::chrono::steady_clock
|
includes.emplace_back("functional"); // for std::function
|
includes.emplace_back("json/value.h");
|
publics.emplace_back(
|
new LiteralDecl{"static std::function<void(const Json::Value&)> logFunc;\n"});
|
}
|
unique_ptr<ClassDecl> bn_class{
|
new ClassDecl{bn_name,
|
"::android::BnInterface<" + i_name + ">",
|
std::move(publics),
|
{}
|
}};
|
|
return unique_ptr<Document>{
|
new CppHeader{BuildHeaderGuard(interface, ClassNames::SERVER), includes,
|
NestInNamespaces(std::move(bn_class), interface.GetSplitPackage())}};
|
}
|
|
unique_ptr<Document> BuildInterfaceHeader(const TypeNamespace& types,
|
const AidlInterface& interface, const Options& options) {
|
set<string> includes = {kIBinderHeader, kIInterfaceHeader, kStatusHeader, kStrongPointerHeader};
|
|
for (const auto& method : interface.GetMethods()) {
|
for (const auto& argument : method->GetArguments()) {
|
const Type* type = argument->GetType().GetLanguageType<Type>();
|
type->GetHeaders(&includes);
|
}
|
|
const Type* return_type = method->GetType().GetLanguageType<Type>();
|
if (return_type != nullptr) {
|
return_type->GetHeaders(&includes);
|
}
|
}
|
|
const string i_name = ClassName(interface, ClassNames::INTERFACE);
|
unique_ptr<ClassDecl> if_class{new ClassDecl{i_name, "::android::IInterface"}};
|
if_class->AddPublic(unique_ptr<Declaration>{new MacroDecl{
|
"DECLARE_META_INTERFACE",
|
ArgList{vector<string>{ClassName(interface, ClassNames::BASE)}}}});
|
|
if (options.Version() > 0) {
|
std::ostringstream code;
|
code << "const int32_t VERSION = " << options.Version() << ";\n";
|
|
if_class->AddPublic(unique_ptr<Declaration>(new LiteralDecl(code.str())));
|
}
|
|
std::vector<std::unique_ptr<Declaration>> string_constants;
|
unique_ptr<Enum> int_constant_enum{new Enum{"", "int32_t"}};
|
for (const auto& constant : interface.GetConstantDeclarations()) {
|
const AidlConstantValue& value = constant->GetValue();
|
|
switch (value.GetType()) {
|
case AidlConstantValue::Type::STRING: {
|
std::string cppType = constant->GetType().GetLanguageType<Type>()->CppType();
|
unique_ptr<Declaration> getter(new MethodDecl("const " + cppType + "&", constant->GetName(),
|
{}, MethodDecl::IS_STATIC));
|
string_constants.push_back(std::move(getter));
|
break;
|
}
|
case AidlConstantValue::Type::INTEGRAL:
|
case AidlConstantValue::Type::HEXIDECIMAL: {
|
int_constant_enum->AddValue(constant->GetName(),
|
constant->ValueString(ConstantValueDecorator));
|
break;
|
}
|
default: {
|
LOG(FATAL) << "Unrecognized constant type: " << static_cast<int>(value.GetType());
|
}
|
}
|
}
|
if (int_constant_enum->HasValues()) {
|
if_class->AddPublic(std::move(int_constant_enum));
|
}
|
if (!string_constants.empty()) {
|
includes.insert(kString16Header);
|
|
for (auto& string_constant : string_constants) {
|
if_class->AddPublic(std::move(string_constant));
|
}
|
}
|
|
if (options.GenTraces()) {
|
includes.insert(kTraceHeader);
|
}
|
|
if (!interface.GetMethods().empty()) {
|
for (const auto& method : interface.GetMethods()) {
|
if (method->IsUserDefined()) {
|
// Each method gets an enum entry and pure virtual declaration.
|
if_class->AddPublic(BuildMethodDecl(*method, types, true));
|
} else {
|
if_class->AddPublic(BuildMetaMethodDecl(*method, types, options, true));
|
}
|
}
|
}
|
|
vector<unique_ptr<Declaration>> decls;
|
decls.emplace_back(std::move(if_class));
|
|
// Base class for the default implementation.
|
vector<string> method_decls;
|
for (const auto& method : interface.GetMethods()) {
|
if (method->IsUserDefined()) {
|
method_decls.emplace_back(BuildMethodDecl(*method, types, false)->ToString());
|
} else {
|
method_decls.emplace_back(BuildMetaMethodDecl(*method, types, options, false)->ToString());
|
}
|
}
|
|
decls.emplace_back(new LiteralDecl(
|
android::base::StringPrintf("class %s : public %s {\n"
|
"public:\n"
|
" ::android::IBinder* onAsBinder() override;\n"
|
" %s\n"
|
"};\n",
|
ClassName(interface, ClassNames::DEFAULT_IMPL).c_str(),
|
i_name.c_str(), Join(method_decls, " ").c_str())));
|
|
return unique_ptr<Document>{
|
new CppHeader{BuildHeaderGuard(interface, ClassNames::INTERFACE),
|
vector<string>(includes.begin(), includes.end()),
|
NestInNamespaces(std::move(decls), interface.GetSplitPackage())}};
|
}
|
|
std::unique_ptr<Document> BuildParcelHeader(const TypeNamespace& /*types*/,
|
const AidlStructuredParcelable& parcel,
|
const Options&) {
|
unique_ptr<ClassDecl> parcel_class{new ClassDecl{parcel.GetName(), "::android::Parcelable"}};
|
|
set<string> includes = {kStatusHeader, kParcelHeader};
|
for (const auto& variable : parcel.GetFields()) {
|
const Type* type = variable->GetType().GetLanguageType<Type>();
|
type->GetHeaders(&includes);
|
}
|
|
for (const auto& variable : parcel.GetFields()) {
|
const Type* type = variable->GetType().GetLanguageType<Type>();
|
|
std::ostringstream out;
|
out << type->CppType().c_str() << " " << variable->GetName().c_str();
|
if (variable->GetDefaultValue()) {
|
out << " = " << type->CppType().c_str() << "("
|
<< variable->ValueString(ConstantValueDecorator) << ")";
|
}
|
out << ";\n";
|
|
parcel_class->AddPublic(std::unique_ptr<LiteralDecl>(new LiteralDecl(out.str())));
|
}
|
|
unique_ptr<MethodDecl> read(new MethodDecl(kAndroidStatusLiteral, "readFromParcel",
|
ArgList("const ::android::Parcel* _aidl_parcel"),
|
MethodDecl::IS_OVERRIDE | MethodDecl::IS_FINAL));
|
parcel_class->AddPublic(std::move(read));
|
unique_ptr<MethodDecl> write(new MethodDecl(
|
kAndroidStatusLiteral, "writeToParcel", ArgList("::android::Parcel* _aidl_parcel"),
|
MethodDecl::IS_OVERRIDE | MethodDecl::IS_CONST | MethodDecl::IS_FINAL));
|
parcel_class->AddPublic(std::move(write));
|
|
return unique_ptr<Document>{new CppHeader{
|
BuildHeaderGuard(parcel, ClassNames::BASE), vector<string>(includes.begin(), includes.end()),
|
NestInNamespaces(std::move(parcel_class), parcel.GetSplitPackage())}};
|
}
|
std::unique_ptr<Document> BuildParcelSource(const TypeNamespace& /*types*/,
|
const AidlStructuredParcelable& parcel,
|
const Options&) {
|
unique_ptr<MethodImpl> read{new MethodImpl{kAndroidStatusLiteral, parcel.GetName(),
|
"readFromParcel",
|
ArgList("const ::android::Parcel* _aidl_parcel")}};
|
StatementBlock* read_block = read->GetStatementBlock();
|
read_block->AddLiteral(
|
StringPrintf("%s %s = %s", kAndroidStatusLiteral, kAndroidStatusVarName, kAndroidStatusOk));
|
|
read_block->AddLiteral(
|
"size_t _aidl_start_pos = _aidl_parcel->dataPosition();\n"
|
"int32_t _aidl_parcelable_raw_size = _aidl_parcel->readInt32();\n"
|
"if (_aidl_parcelable_raw_size < 0) return ::android::BAD_VALUE;\n"
|
"size_t _aidl_parcelable_size = static_cast<size_t>(_aidl_parcelable_raw_size);\n");
|
|
for (const auto& variable : parcel.GetFields()) {
|
string method = variable->GetType().GetLanguageType<Type>()->ReadFromParcelMethod();
|
|
read_block->AddStatement(new Assignment(
|
kAndroidStatusVarName, new MethodCall(StringPrintf("_aidl_parcel->%s", method.c_str()),
|
ArgList("&" + variable->GetName()))));
|
read_block->AddStatement(ReturnOnStatusNotOk());
|
read_block->AddLiteral(StringPrintf(
|
"if (_aidl_parcel->dataPosition() - _aidl_start_pos >= _aidl_parcelable_size) {\n"
|
" _aidl_parcel->setDataPosition(_aidl_start_pos + _aidl_parcelable_size);\n"
|
" return %s;\n"
|
"}",
|
kAndroidStatusVarName));
|
}
|
read_block->AddLiteral(StringPrintf("return %s", kAndroidStatusVarName));
|
|
unique_ptr<MethodImpl> write{
|
new MethodImpl{kAndroidStatusLiteral, parcel.GetName(), "writeToParcel",
|
ArgList("::android::Parcel* _aidl_parcel"), true /*const*/}};
|
StatementBlock* write_block = write->GetStatementBlock();
|
write_block->AddLiteral(
|
StringPrintf("%s %s = %s", kAndroidStatusLiteral, kAndroidStatusVarName, kAndroidStatusOk));
|
|
write_block->AddLiteral(
|
"auto _aidl_start_pos = _aidl_parcel->dataPosition();\n"
|
"_aidl_parcel->writeInt32(0);");
|
|
for (const auto& variable : parcel.GetFields()) {
|
string method = variable->GetType().GetLanguageType<Type>()->WriteToParcelMethod();
|
|
write_block->AddStatement(new Assignment(
|
kAndroidStatusVarName, new MethodCall(StringPrintf("_aidl_parcel->%s", method.c_str()),
|
ArgList(variable->GetName()))));
|
write_block->AddStatement(ReturnOnStatusNotOk());
|
}
|
|
write_block->AddLiteral(
|
"auto _aidl_end_pos = _aidl_parcel->dataPosition();\n"
|
"_aidl_parcel->setDataPosition(_aidl_start_pos);\n"
|
"_aidl_parcel->writeInt32(_aidl_end_pos - _aidl_start_pos);\n"
|
"_aidl_parcel->setDataPosition(_aidl_end_pos);");
|
write_block->AddLiteral(StringPrintf("return %s", kAndroidStatusVarName));
|
|
vector<unique_ptr<Declaration>> file_decls;
|
file_decls.push_back(std::move(read));
|
file_decls.push_back(std::move(write));
|
|
set<string> includes = {};
|
parcel.GetLanguageType<Type>()->GetHeaders(&includes);
|
|
return unique_ptr<Document>{
|
new CppSource{vector<string>(includes.begin(), includes.end()),
|
NestInNamespaces(std::move(file_decls), parcel.GetSplitPackage())}};
|
}
|
|
bool WriteHeader(const Options& options, const TypeNamespace& types, const AidlInterface& interface,
|
const IoDelegate& io_delegate, ClassNames header_type) {
|
unique_ptr<Document> header;
|
switch (header_type) {
|
case ClassNames::INTERFACE:
|
header = BuildInterfaceHeader(types, interface, options);
|
header_type = ClassNames::RAW;
|
break;
|
case ClassNames::CLIENT:
|
header = BuildClientHeader(types, interface, options);
|
break;
|
case ClassNames::SERVER:
|
header = BuildServerHeader(types, interface, options);
|
break;
|
default:
|
LOG(FATAL) << "aidl internal error";
|
}
|
if (!header) {
|
LOG(ERROR) << "aidl internal error: Failed to generate header.";
|
return false;
|
}
|
|
const string header_path = options.OutputHeaderDir() + HeaderFile(interface, header_type);
|
unique_ptr<CodeWriter> code_writer(io_delegate.GetCodeWriter(header_path));
|
header->Write(code_writer.get());
|
|
const bool success = code_writer->Close();
|
if (!success) {
|
io_delegate.RemovePath(header_path);
|
}
|
|
return success;
|
}
|
|
} // namespace internals
|
|
using namespace internals;
|
|
bool GenerateCppInterface(const string& output_file, const Options& options,
|
const TypeNamespace& types, const AidlInterface& interface,
|
const IoDelegate& io_delegate) {
|
auto interface_src = BuildInterfaceSource(types, interface, options);
|
auto client_src = BuildClientSource(types, interface, options);
|
auto server_src = BuildServerSource(types, interface, options);
|
|
if (!interface_src || !client_src || !server_src) {
|
return false;
|
}
|
|
if (!WriteHeader(options, types, interface, io_delegate,
|
ClassNames::INTERFACE) ||
|
!WriteHeader(options, types, interface, io_delegate,
|
ClassNames::CLIENT) ||
|
!WriteHeader(options, types, interface, io_delegate,
|
ClassNames::SERVER)) {
|
return false;
|
}
|
|
unique_ptr<CodeWriter> writer = io_delegate.GetCodeWriter(output_file);
|
interface_src->Write(writer.get());
|
client_src->Write(writer.get());
|
server_src->Write(writer.get());
|
|
const bool success = writer->Close();
|
if (!success) {
|
io_delegate.RemovePath(output_file);
|
}
|
|
return success;
|
}
|
|
bool GenerateCppParcel(const string& output_file, const Options& options,
|
const cpp::TypeNamespace& types, const AidlStructuredParcelable& parcelable,
|
const IoDelegate& io_delegate) {
|
auto header = BuildParcelHeader(types, parcelable, options);
|
auto source = BuildParcelSource(types, parcelable, options);
|
|
if (!header || !source) {
|
return false;
|
}
|
|
const string header_path = options.OutputHeaderDir() + HeaderFile(parcelable, ClassNames::RAW);
|
unique_ptr<CodeWriter> header_writer(io_delegate.GetCodeWriter(header_path));
|
header->Write(header_writer.get());
|
CHECK(header_writer->Close());
|
|
// TODO(b/111362593): no unecessary files just to have consistent output with interfaces
|
const string bp_header = options.OutputHeaderDir() + HeaderFile(parcelable, ClassNames::CLIENT);
|
unique_ptr<CodeWriter> bp_writer(io_delegate.GetCodeWriter(bp_header));
|
bp_writer->Write("#error TODO(b/111362593) parcelables do not have bp classes");
|
CHECK(bp_writer->Close());
|
const string bn_header = options.OutputHeaderDir() + HeaderFile(parcelable, ClassNames::SERVER);
|
unique_ptr<CodeWriter> bn_writer(io_delegate.GetCodeWriter(bn_header));
|
bn_writer->Write("#error TODO(b/111362593) parcelables do not have bn classes");
|
CHECK(bn_writer->Close());
|
|
unique_ptr<CodeWriter> source_writer = io_delegate.GetCodeWriter(output_file);
|
source->Write(source_writer.get());
|
CHECK(source_writer->Close());
|
|
return true;
|
}
|
|
bool GenerateCppParcelDeclaration(const std::string& filename, const IoDelegate& io_delegate) {
|
CodeWriterPtr code_writer = io_delegate.GetCodeWriter(filename);
|
*code_writer
|
<< "// This file is intentionally left blank as placeholder for parcel declaration.\n";
|
|
return true;
|
}
|
|
bool GenerateCpp(const string& output_file, const Options& options, const TypeNamespace& types,
|
const AidlDefinedType& defined_type, const IoDelegate& io_delegate) {
|
const AidlStructuredParcelable* parcelable = defined_type.AsStructuredParcelable();
|
if (parcelable != nullptr) {
|
return GenerateCppParcel(output_file, options, types, *parcelable, io_delegate);
|
}
|
|
const AidlParcelable* parcelable_decl = defined_type.AsParcelable();
|
if (parcelable_decl != nullptr) {
|
return GenerateCppParcelDeclaration(output_file, io_delegate);
|
}
|
|
const AidlInterface* interface = defined_type.AsInterface();
|
if (interface != nullptr) {
|
return GenerateCppInterface(output_file, options, types, *interface, io_delegate);
|
}
|
|
CHECK(false) << "Unrecognized type sent for cpp generation.";
|
return false;
|
}
|
|
} // namespace cpp
|
} // namespace aidl
|
} // namespace android
|
