Examples with Expr com.google.api.generator.engine.ast.Expr used on opensource projects

Example 6 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class AbstractServiceStubSettingsClassComposer method createDefaultTransportTransportProviderBuilderMethods.

protected List<MethodDefinition> createDefaultTransportTransportProviderBuilderMethods() {
    // Create the defaultGrpcTransportProviderBuilder method.
    Iterator<Class<?>> providerClassIt = getTransportContext().instantiatingChannelProviderClasses().iterator();
    Iterator<Class<?>> providerBuilderClassIt = getTransportContext().instantiatingChannelProviderBuilderClasses().iterator();
    Iterator<String> builderNamesIt = getTransportContext().defaultTransportProviderBuilderNames().iterator();
    List<MethodDefinition> methods = new ArrayList<>();
    while (providerClassIt.hasNext() && providerBuilderClassIt.hasNext() && builderNamesIt.hasNext()) {
        TypeNode returnType = TypeNode.withReference(ConcreteReference.withClazz(providerBuilderClassIt.next()));
        TypeNode channelProviderType = TypeNode.withReference(ConcreteReference.withClazz(providerClassIt.next()));
        MethodInvocationExpr transportChannelProviderBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(channelProviderType).setMethodName("newBuilder").setReturnType(returnType).build();
        Expr returnExpr = initializeTransportProviderBuilder(transportChannelProviderBuilderExpr, returnType);
        MethodDefinition method = MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_TRANSPORT_PROVIDER_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName(builderNamesIt.next()).setReturnExpr(returnExpr).build();
        methods.add(method);
    }
    return methods;
}

Example 7 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class AbstractTransportServiceStubClassComposer method createStaticCreatorMethods.

protected List<MethodDefinition> createStaticCreatorMethods(Service service, TypeStore typeStore, String newBuilderMethod) {
    TypeNode creatorMethodReturnType = typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service));
    Function<List<VariableExpr>, MethodDefinition.Builder> creatorMethodStarterFn = argList -> MethodDefinition.builder().setScope(ScopeNode.PUBLIC).setIsStatic(true).setIsFinal(true).setReturnType(creatorMethodReturnType).setName("create").setArguments(argList.stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setThrowsExceptions(Arrays.asList(TypeNode.withReference(ConcreteReference.withClazz(IOException.class))));
    Function<List<Expr>, Expr> instantiatorExprFn = argList -> NewObjectExpr.builder().setType(creatorMethodReturnType).setArguments(argList).build();
    TypeNode stubSettingsType = typeStore.get(getTransportContext().classNames().getServiceStubSettingsClassName(service));
    VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("settings").setType(stubSettingsType).build());
    TypeNode clientContextType = FIXED_TYPESTORE.get("ClientContext");
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setName("clientContext").setType(clientContextType).build());
    VariableExpr callableFactoryVarExpr = VariableExpr.withVariable(Variable.builder().setName("callableFactory").setType(getTransportContext().stubCallableFactoryType()).build());
    MethodInvocationExpr clientContextCreateMethodExpr = MethodInvocationExpr.builder().setMethodName("create").setStaticReferenceType(clientContextType).setArguments(Arrays.asList(settingsVarExpr)).build();
    MethodInvocationExpr settingsBuilderMethodExpr = MethodInvocationExpr.builder().setMethodName(newBuilderMethod).setStaticReferenceType(stubSettingsType).build();
    settingsBuilderMethodExpr = MethodInvocationExpr.builder().setMethodName("build").setExprReferenceExpr(settingsBuilderMethodExpr).build();
    return Arrays.asList(creatorMethodStarterFn.apply(Arrays.asList(settingsVarExpr)).setReturnExpr(instantiatorExprFn.apply(Arrays.asList(settingsVarExpr, clientContextCreateMethodExpr))).build(), creatorMethodStarterFn.apply(Arrays.asList(clientContextVarExpr)).setReturnExpr(instantiatorExprFn.apply(Arrays.asList(settingsBuilderMethodExpr, clientContextVarExpr))).build(), creatorMethodStarterFn.apply(Arrays.asList(clientContextVarExpr, callableFactoryVarExpr)).setReturnExpr(instantiatorExprFn.apply(Arrays.asList(settingsBuilderMethodExpr, clientContextVarExpr, callableFactoryVarExpr))).build());
}

Example 8 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class AbstractTransportServiceStubClassComposer method createStubOverrideMethods.

private List<MethodDefinition> createStubOverrideMethods(VariableExpr backgroundResourcesVarExpr, Service service) {
    Function<String, MethodDefinition.Builder> methodMakerStarterFn = methodName -> MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setName(methodName);
    Function<String, MethodDefinition> voidMethodMakerFn = methodName -> methodMakerStarterFn.apply(methodName).setReturnType(TypeNode.VOID).setBody(Arrays.asList(ExprStatement.withExpr(MethodInvocationExpr.builder().setExprReferenceExpr(backgroundResourcesVarExpr).setMethodName(methodName).build()))).build();
    Function<String, MethodDefinition> booleanMethodMakerFn = methodName -> methodMakerStarterFn.apply(methodName).setReturnType(TypeNode.BOOLEAN).setReturnExpr(MethodInvocationExpr.builder().setExprReferenceExpr(backgroundResourcesVarExpr).setMethodName(methodName).setReturnType(TypeNode.BOOLEAN).build()).build();
    // Generate the close() method:
    // @Override
    // public final void close() {
    // try {
    // backgroundResources.close();
    // } catch (RuntimeException e) {
    // throw e;
    // } catch (Exception e) {
    // throw new IllegalStateException("Failed to close resource", e);
    // }
    // }
    VariableExpr catchRuntimeExceptionVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(TypeNode.withExceptionClazz(RuntimeException.class)).setName("e").build()).build();
    VariableExpr catchExceptionVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(TypeNode.withExceptionClazz(Exception.class)).setName("e").build()).build();
    List<MethodDefinition> javaMethods = new ArrayList<>();
    if (service.operationPollingMethod() != null) {
        javaMethods.addAll(createLongRunningClientGetters());
    }
    javaMethods.add(methodMakerStarterFn.apply("close").setIsFinal(true).setReturnType(TypeNode.VOID).setBody(Arrays.asList(TryCatchStatement.builder().setTryBody(Arrays.asList(ExprStatement.withExpr(MethodInvocationExpr.builder().setExprReferenceExpr(backgroundResourcesVarExpr).setMethodName("close").build()))).addCatch(catchRuntimeExceptionVarExpr.toBuilder().setIsDecl(true).build(), Arrays.asList(ExprStatement.withExpr(ThrowExpr.builder().setThrowExpr(catchRuntimeExceptionVarExpr).build()))).addCatch(catchExceptionVarExpr.toBuilder().setIsDecl(true).build(), Arrays.asList(ExprStatement.withExpr(ThrowExpr.builder().setType(TypeNode.withExceptionClazz(IllegalStateException.class)).setMessageExpr("Failed to close resource").setCauseExpr(catchExceptionVarExpr).build()))).build())).build());
    javaMethods.add(voidMethodMakerFn.apply("shutdown"));
    javaMethods.add(booleanMethodMakerFn.apply("isShutdown"));
    javaMethods.add(booleanMethodMakerFn.apply("isTerminated"));
    javaMethods.add(voidMethodMakerFn.apply("shutdownNow"));
    List<VariableExpr> awaitTerminationArgs = Arrays.asList(VariableExpr.withVariable(Variable.builder().setName("duration").setType(TypeNode.LONG).build()), VariableExpr.withVariable(Variable.builder().setName("unit").setType(FIXED_TYPESTORE.get("TimeUnit")).build()));
    javaMethods.add(methodMakerStarterFn.apply("awaitTermination").setReturnType(TypeNode.BOOLEAN).setArguments(awaitTerminationArgs.stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setThrowsExceptions(Arrays.asList(FIXED_TYPESTORE.get("InterruptedException"))).setReturnExpr(MethodInvocationExpr.builder().setExprReferenceExpr(backgroundResourcesVarExpr).setMethodName("awaitTermination").setArguments(awaitTerminationArgs.stream().map(v -> (Expr) v).collect(Collectors.toList())).setReturnType(TypeNode.BOOLEAN).build()).build());
    return javaMethods;
}

Example 9 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class AbstractTransportServiceStubClassComposer method createConstructorMethods.

protected List<MethodDefinition> createConstructorMethods(GapicContext context, Service service, TypeStore typeStore, Map<String, VariableExpr> classMemberVarExprs, Map<String, VariableExpr> callableClassMemberVarExprs, Map<String, VariableExpr> protoMethodNameToDescriptorVarExprs, List<Statement> classStatements) {
    TypeNode stubSettingsType = typeStore.get(getTransportContext().classNames().getServiceStubSettingsClassName(service));
    VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("settings").setType(stubSettingsType).build());
    TypeNode clientContextType = FIXED_TYPESTORE.get("ClientContext");
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setName("clientContext").setType(clientContextType).build());
    VariableExpr callableFactoryVarExpr = VariableExpr.withVariable(Variable.builder().setName("callableFactory").setType(getTransportContext().stubCallableFactoryType()).build());
    TypeNode thisClassType = typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service));
    TypeNode ioExceptionType = TypeNode.withReference(ConcreteReference.withClazz(IOException.class));
    BiFunction<List<VariableExpr>, List<Statement>, MethodDefinition> ctorMakerFn = (args, body) -> MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(thisClassType).setHeaderCommentStatements(Arrays.asList(createProtectedCtorComment(service))).setArguments(args.stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setThrowsExceptions(Arrays.asList(ioExceptionType)).setBody(body).build();
    // First constructor method.
    MethodDefinition firstCtor = ctorMakerFn.apply(Arrays.asList(settingsVarExpr, clientContextVarExpr), Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.thisBuilder().setType(thisClassType).setArguments(settingsVarExpr, clientContextVarExpr, NewObjectExpr.builder().setType(typeStore.get(getTransportContext().classNames().getTransportServiceCallableFactoryClassName(service))).build()).build())));
    Expr thisExpr = ValueExpr.withValue(ThisObjectValue.withType(typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service))));
    // Body of the second constructor method.
    List<Statement> secondCtorStatements = new ArrayList<>();
    List<Expr> secondCtorExprs = new ArrayList<>();
    secondCtorExprs.add(AssignmentExpr.builder().setVariableExpr(classMemberVarExprs.get("callableFactory").toBuilder().setExprReferenceExpr(thisExpr).build()).setValueExpr(callableFactoryVarExpr).build());
    VariableExpr operationsStubClassVarExpr = classMemberVarExprs.get(getTransportContext().transportOperationsStubNames().get(0));
    // TODO: refactor this
    if (generateOperationsStubLogic(service)) {
        secondCtorExprs.addAll(createOperationsStubInitExpr(service, thisExpr, operationsStubClassVarExpr, clientContextVarExpr, callableFactoryVarExpr));
    }
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    // Transport settings local variables.
    Map<String, VariableExpr> javaStyleMethodNameToTransportSettingsVarExprs = service.methods().stream().collect(Collectors.toMap(m -> JavaStyle.toLowerCamelCase(m.name()), m -> VariableExpr.withVariable(Variable.builder().setName(String.format("%sTransportSettings", JavaStyle.toLowerCamelCase(m.name()))).setType(TypeNode.withReference(ConcreteReference.builder().setClazz(getTransportContext().callSettingsClass()).setGenerics(Arrays.asList(m.inputType().reference(), m.outputType().reference())).build())).build())));
    secondCtorExprs.addAll(service.methods().stream().map(m -> createTransportSettingsInitExpr(m, javaStyleMethodNameToTransportSettingsVarExprs.get(JavaStyle.toLowerCamelCase(m.name())), protoMethodNameToDescriptorVarExprs.get(m.name()), classStatements)).collect(Collectors.toList()));
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    // Initialize <method>Callable variables.
    secondCtorExprs.addAll(callableClassMemberVarExprs.entrySet().stream().map(e -> createCallableInitExpr(context, service, e.getKey(), e.getValue(), callableFactoryVarExpr, settingsVarExpr, clientContextVarExpr, operationsStubClassVarExpr, thisExpr, javaStyleMethodNameToTransportSettingsVarExprs)).collect(Collectors.toList()));
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    secondCtorStatements.addAll(createLongRunningClient(service, typeStore));
    // Instantiate backgroundResources.
    MethodInvocationExpr getBackgroundResourcesMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientContextVarExpr).setMethodName("getBackgroundResources").build();
    VariableExpr backgroundResourcesVarExpr = classMemberVarExprs.get("backgroundResources");
    secondCtorExprs.add(AssignmentExpr.builder().setVariableExpr(backgroundResourcesVarExpr.toBuilder().setExprReferenceExpr(thisExpr).build()).setValueExpr(NewObjectExpr.builder().setType(FIXED_TYPESTORE.get("BackgroundResourceAggregation")).setArguments(Arrays.asList(getBackgroundResourcesMethodExpr)).build()).build());
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    // Second constructor method.
    MethodDefinition secondCtor = ctorMakerFn.apply(Arrays.asList(settingsVarExpr, clientContextVarExpr, callableFactoryVarExpr), secondCtorStatements);
    return Arrays.asList(firstCtor, secondCtor);
}

Example 10 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class BatchingDescriptorComposer method createGetRequestBuilderMethod.

private static MethodDefinition createGetRequestBuilderMethod(Method method, GapicBatchingSettings batchingSettings) {
    TypeNode builderType = TypeNode.withReference(VaporReference.builder().setEnclosingClassNames(method.inputType().reference().name()).setName("Builder").setPakkage(method.inputType().reference().pakkage()).build());
    VariableExpr builderVarExpr = VariableExpr.withVariable(Variable.builder().setType(builderType).setName("builder").build());
    VariableExpr requestVarExpr = VariableExpr.withVariable(Variable.builder().setType(method.inputType()).setName("request").build());
    Expr toBuilderExpr = AssignmentExpr.builder().setVariableExpr(builderVarExpr).setValueExpr(MethodInvocationExpr.builder().setExprReferenceExpr(requestVarExpr).setMethodName("toBuilder").setReturnType(builderType).build()).build();
    String upperBatchedFieldName = JavaStyle.toUpperCamelCase(batchingSettings.batchedFieldName());
    String getFooListMethodName = String.format(GET_LIST_METHOD_PATTERN, upperBatchedFieldName);
    Expr getFooListExpr = MethodInvocationExpr.builder().setExprReferenceExpr(requestVarExpr).setMethodName(getFooListMethodName).build();
    String addAllMethodName = String.format(ADD_ALL_METHOD_PATTERN, upperBatchedFieldName);
    Expr addAllExpr = MethodInvocationExpr.builder().setExprReferenceExpr(builderVarExpr).setMethodName(addAllMethodName).setArguments(getFooListExpr).build();
    MethodDefinition appendRequestMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setReturnType(TypeNode.VOID).setName("appendRequest").setArguments(requestVarExpr.toBuilder().setIsDecl(true).build()).setBody(Arrays.asList(IfStatement.builder().setConditionExpr(RelationalOperationExpr.equalToWithExprs(builderVarExpr, ValueExpr.createNullExpr())).setBody(Arrays.asList(ExprStatement.withExpr(toBuilderExpr))).setElseBody(Arrays.asList(ExprStatement.withExpr(addAllExpr))).build())).build();
    MethodDefinition buildMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setReturnType(method.inputType()).setName("build").setReturnExpr(MethodInvocationExpr.builder().setExprReferenceExpr(builderVarExpr).setMethodName("build").setReturnType(method.inputType()).build()).build();
    TypeNode anonClassType = toType(REQUEST_BUILDER_REF, method.inputType());
    AnonymousClassExpr requestBuilderAnonClassExpr = AnonymousClassExpr.builder().setType(anonClassType).setStatements(Arrays.asList(ExprStatement.withExpr(builderVarExpr.toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).build()))).setMethods(Arrays.asList(appendRequestMethod, buildMethod)).build();
    return MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setReturnType(anonClassType).setName("getRequestBuilder").setReturnExpr(requestBuilderAnonClassExpr).build();
}