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

Example 31 with AssignmentExpr

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

the class HttpJsonServiceStubClassComposer method setPollingRequestFactoryExpr.

private List<Expr> setPollingRequestFactoryExpr(Method protoMethod, Map<String, Message> messageTypes) {
    BiFunction<String, List<Expr>, Function<MethodInvocationExpr, MethodInvocationExpr>> methodMaker = getMethodMaker();
    Message inputOperationMessage = messageTypes.get(protoMethod.inputType().reference().fullName());
    List<Statement> createBody = new ArrayList<>(1);
    // Generate input variables for create
    VariableExpr compoundOperationIdVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(TypeNode.STRING).setName("compoundOperationId").build()).build();
    // Generate idComponenets
    TypeNode listStringType = TypeNode.withReference(ConcreteReference.builder().setClazz(List.class).setGenerics(ConcreteReference.withClazz(String.class)).build());
    TypeNode arrayListStringType = TypeNode.withReference(ConcreteReference.builder().setClazz(ArrayList.class).setGenerics(ConcreteReference.withClazz(String.class)).build());
    TypeNode arraysType = TypeNode.withReference(ConcreteReference.withClazz(Arrays.class));
    VariableExpr idComponentsVarExpr = VariableExpr.withVariable(Variable.builder().setName("idComponents").setType(listStringType).build());
    MethodInvocationExpr compoundOperationIdSplitExpr = MethodInvocationExpr.builder().setExprReferenceExpr(compoundOperationIdVarExpr).setMethodName("split").setArguments(ValueExpr.withValue(StringObjectValue.withValue(":"))).setReturnType(arrayListStringType).build();
    MethodInvocationExpr asListExpr = MethodInvocationExpr.builder().setStaticReferenceType(arraysType).setMethodName("asList").setArguments(compoundOperationIdSplitExpr).setReturnType(arrayListStringType).build();
    AssignmentExpr idComponentsAssignExpr = AssignmentExpr.builder().setVariableExpr(idComponentsVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(asListExpr).build();
    createBody.add(ExprStatement.withExpr(idComponentsAssignExpr));
    // Generate return statement
    TypeNode getOperationRequestType = TypeNode.withReference(protoMethod.inputType().reference());
    MethodInvocationExpr newBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(getOperationRequestType).setMethodName("newBuilder").build();
    BiMap<String, String> responseFieldsMap = inputOperationMessage.operationResponseFields();
    List<String> responseFieldAnnotationNames = new ArrayList<>(responseFieldsMap.keySet());
    Collections.sort(responseFieldAnnotationNames);
    Set<String> responseFieldsNames = responseFieldsMap.inverse().keySet();
    Set<String> allFieldsNames = inputOperationMessage.fieldMap().keySet();
    ArrayList<String> nonResponseFieldsNames = new ArrayList<>();
    for (String fieldName : allFieldsNames) {
        if (!responseFieldsNames.contains(fieldName)) {
            nonResponseFieldsNames.add(fieldName);
        }
    }
    Collections.sort(nonResponseFieldsNames);
    int index = 0;
    for (String fieldAnnotationName : responseFieldAnnotationNames) {
        newBuilderExpr = methodMaker.apply(setMethodFormat(responseFieldsMap.get(fieldAnnotationName)), Collections.singletonList(getExpr(idComponentsVarExpr, Integer.toString(index)))).apply(newBuilderExpr);
        index++;
    }
    for (String fieldName : nonResponseFieldsNames) {
        newBuilderExpr = methodMaker.apply(setMethodFormat(fieldName), Collections.singletonList(getExpr(idComponentsVarExpr, Integer.toString(index)))).apply(newBuilderExpr);
        index++;
    }
    MethodInvocationExpr buildExpr = MethodInvocationExpr.builder().setExprReferenceExpr(newBuilderExpr).setMethodName("build").setReturnType(getOperationRequestType).build();
    // Return lambda anonymous class
    return Collections.singletonList(LambdaExpr.builder().setArguments(compoundOperationIdVarExpr.toBuilder().setIsDecl(true).build()).setBody(createBody).setReturnExpr(buildExpr).build());
}

Example 32 with AssignmentExpr

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

the class HttpJsonServiceStubClassComposer method createLongRunningClient.

@Override
protected List<Statement> createLongRunningClient(Service service, TypeStore typeStore) {
    Method pollingMethod = service.operationPollingMethod();
    if (pollingMethod != null) {
        Expr thisExpr = ValueExpr.withValue(ThisObjectValue.withType(typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service))));
        VariableExpr callable = VariableExpr.withVariable(Variable.builder().setName(pollingMethod.name().toLowerCase() + "Callable").setType(TypeNode.withReference(ConcreteReference.withClazz(UnaryCallable.class))).build());
        VariableExpr methodDescriptor = VariableExpr.withVariable(Variable.builder().setName(pollingMethod.name().toLowerCase() + "MethodDescriptor").setType(TypeNode.withReference(ConcreteReference.withClazz(ApiMethodDescriptor.class))).build());
        TypeNode httpJsonLongRunningClientType = TypeNode.withReference(ConcreteReference.builder().setClazz(HttpJsonLongRunningClient.class).setGenerics(Arrays.asList(pollingMethod.inputType().reference(), pollingMethod.outputType().reference())).build());
        NewObjectExpr HttpJsonLongRunningClient = NewObjectExpr.builder().setType(httpJsonLongRunningClientType).setArguments(Arrays.asList(callable, MethodInvocationExpr.builder().setExprReferenceExpr(methodDescriptor).setMethodName("getOperationSnapshotFactory").build(), MethodInvocationExpr.builder().setExprReferenceExpr(methodDescriptor).setMethodName("getPollingRequestFactory").build())).build();
        AssignmentExpr assignLongRunningClient = AssignmentExpr.builder().setVariableExpr(VariableExpr.builder().setExprReferenceExpr(thisExpr).setVariable(Variable.builder().setName("longRunningClient").setType(TypeNode.withReference(ConcreteReference.withClazz(LongRunningClient.class))).build()).build()).setValueExpr(HttpJsonLongRunningClient).build();
        return Arrays.asList(ExprStatement.withExpr(assignLongRunningClient));
    } else {
        return Collections.emptyList();
    }
}

Example 33 with AssignmentExpr

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

the class ServiceClientCallableMethodSampleComposer method composeUnaryOrLroCallableSample.

private static Sample composeUnaryOrLroCallableSample(Method method, VariableExpr clientVarExpr, VariableExpr requestVarExpr) {
    List<Statement> bodyStatements = new ArrayList<>();
    // Create api future variable expression, and assign it with a value by invoking callable
    // method.
    // e.g. ApiFuture<EchoResponse> future = echoClient.echoCallable().futureCall(request);
    TypeNode apiFutureType = TypeNode.withReference(ConcreteReference.builder().setClazz(ApiFuture.class).setGenerics(method.hasLro() ? ConcreteReference.withClazz(Operation.class) : method.outputType().reference()).build());
    VariableExpr apiFutureVarExpr = VariableExpr.withVariable(Variable.builder().setName("future").setType(apiFutureType).build());
    MethodInvocationExpr callableMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientVarExpr).setMethodName(JavaStyle.toLowerCamelCase(String.format("%sCallable", method.name()))).build();
    callableMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(callableMethodInvocationExpr).setMethodName("futureCall").setArguments(requestVarExpr).setReturnType(apiFutureType).build();
    AssignmentExpr futureAssignmentExpr = AssignmentExpr.builder().setVariableExpr(apiFutureVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(callableMethodInvocationExpr).build();
    bodyStatements.add(ExprStatement.withExpr(futureAssignmentExpr));
    bodyStatements.add(CommentStatement.withComment(LineComment.withComment("Do something.")));
    MethodInvocationExpr getMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(apiFutureVarExpr).setMethodName("get").setReturnType(method.outputType()).build();
    TypeNode methodOutputType = method.hasLro() ? method.lro().responseType() : method.outputType();
    boolean returnsVoid = methodOutputType.isProtoEmptyType();
    if (returnsVoid) {
        bodyStatements.add(ExprStatement.withExpr(getMethodInvocationExpr));
    } else {
        VariableExpr responseVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(method.outputType()).setName("response").build()).setIsDecl(true).build();
        AssignmentExpr responseAssignmentExpr = AssignmentExpr.builder().setVariableExpr(responseVarExpr).setValueExpr(getMethodInvocationExpr).build();
        bodyStatements.add(ExprStatement.withExpr(responseAssignmentExpr));
    }
    RegionTag regionTag = RegionTag.builder().setServiceName(clientVarExpr.variable().identifier().name()).setRpcName(method.name()).setIsAsynchronous(true).build();
    return Sample.builder().setBody(bodyStatements).setRegionTag(regionTag).setIsCanonical(true).build();
}

Example 34 with AssignmentExpr

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

the class ServiceClientCallableMethodSampleComposer method composeRegularCallableMethod.

// Compose sample code for the method where it is CallableMethodKind.REGULAR.
public static Sample composeRegularCallableMethod(Method method, TypeNode clientType, Map<String, ResourceName> resourceNames, Map<String, Message> messageTypes) {
    VariableExpr clientVarExpr = VariableExpr.withVariable(Variable.builder().setName(JavaStyle.toLowerCamelCase(clientType.reference().name())).setType(clientType).build());
    // Assign method's request variable with the default value.
    VariableExpr requestVarExpr = VariableExpr.withVariable(Variable.builder().setName("request").setType(method.inputType()).build());
    Message requestMessage = messageTypes.get(method.inputType().reference().fullName());
    Preconditions.checkNotNull(requestMessage, String.format("Could not find the message type %s.", method.inputType().reference().fullName()));
    Expr requestBuilderExpr = DefaultValueComposer.createSimpleMessageBuilderValue(requestMessage, resourceNames, messageTypes);
    AssignmentExpr requestAssignmentExpr = AssignmentExpr.builder().setVariableExpr(requestVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(requestBuilderExpr).build();
    List<Statement> bodyStatements = new ArrayList<>();
    bodyStatements.add(ExprStatement.withExpr(requestAssignmentExpr));
    RegionTag regionTag;
    if (method.isPaged()) {
        Sample pagedCallable = composePagedCallableSample(method, clientVarExpr, requestVarExpr, messageTypes);
        bodyStatements.addAll(pagedCallable.body());
        regionTag = pagedCallable.regionTag();
    } else {
        // e.g.  echoClient.echoCallable().futureCall(request)
        Sample unaryOrLroCallable = composeUnaryOrLroCallableSample(method, clientVarExpr, requestVarExpr);
        bodyStatements.addAll(unaryOrLroCallable.body());
        regionTag = unaryOrLroCallable.regionTag();
    }
    List<Statement> body = Arrays.asList(TryCatchStatement.builder().setTryResourceExpr(SampleComposerUtil.assignClientVariableWithCreateMethodExpr(clientVarExpr)).setTryBody(bodyStatements).setIsSampleCode(true).build());
    return Sample.builder().setBody(body).setRegionTag(regionTag).build();
}

Example 35 with AssignmentExpr

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

the class ServiceClientCallableMethodSampleComposer method composeStreamClientSample.

private static Sample composeStreamClientSample(Method method, VariableExpr clientVarExpr, AssignmentExpr requestAssignmentExpr) {
    List<Expr> bodyExprs = new ArrayList<>();
    // Create responseObserver variable expression.
    // e.g. ApiStream<EchoResponse> responseObserver
    TypeNode responseObserverType = TypeNode.withReference(ConcreteReference.builder().setClazz(ApiStreamObserver.class).setGenerics(method.inputType().reference()).build());
    VariableExpr responseObserverVarExpr = VariableExpr.withVariable(Variable.builder().setName("responseObserver").setType(responseObserverType).build());
    // Create an anonymous class for ApiStreamObserver that contains the methods onNext, onError,
    // and onCompleted.
    MethodDefinition onNextMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setName("onNext").setArguments(VariableExpr.builder().setVariable(Variable.builder().setName("response").setType(method.outputType()).build()).setIsDecl(true).build()).setBody(Arrays.asList(CommentStatement.withComment(LineComment.withComment("Do something when a response is received.")))).setReturnType(TypeNode.VOID).build();
    MethodDefinition onErrorMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setName("onError").setArguments(VariableExpr.builder().setVariable(Variable.builder().setName("t").setType(TypeNode.withReference(ConcreteReference.withClazz(Throwable.class))).build()).setIsDecl(true).build()).setBody(Arrays.asList(CommentStatement.withComment(LineComment.withComment("Add error-handling")))).setReturnType(TypeNode.VOID).build();
    MethodDefinition onCompletedMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setName("onCompleted").setBody(Arrays.asList(CommentStatement.withComment(LineComment.withComment("Do something when complete.")))).setReturnType(TypeNode.VOID).build();
    AnonymousClassExpr anonymousClassExpr = AnonymousClassExpr.builder().setType(responseObserverType).setMethods(onNextMethod, onErrorMethod, onCompletedMethod).build();
    AssignmentExpr responseObserverAssignmentExpr = AssignmentExpr.builder().setVariableExpr(responseObserverVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(anonymousClassExpr).build();
    bodyExprs.add(responseObserverAssignmentExpr);
    // Create an assignment expression for request observer variable expression when invoking the
    // client's streaming call.
    // e.g. ApiStreamObserver<EchoRequest> requestObserver =
    // echoClient.collectCallable().clientStreamingCall(responseObserver);
    TypeNode requestObserverType = TypeNode.withReference(ConcreteReference.builder().setClazz(ApiStreamObserver.class).setGenerics(method.inputType().reference()).build());
    VariableExpr requestObserverVarExpr = VariableExpr.withVariable(Variable.builder().setName("requestObserver").setType(responseObserverType).build());
    MethodInvocationExpr clientStreamCallMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientVarExpr).setMethodName(JavaStyle.toLowerCamelCase(method.name())).build();
    clientStreamCallMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientStreamCallMethodInvocationExpr).setArguments(responseObserverVarExpr).setMethodName("clientStreamingCall").setReturnType(requestObserverType).build();
    AssignmentExpr requestObserverAssignmentExpr = AssignmentExpr.builder().setVariableExpr(requestObserverVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(clientStreamCallMethodInvocationExpr).build();
    bodyExprs.add(requestObserverAssignmentExpr);
    // Add assignment expression of request with its default value.
    bodyExprs.add(requestAssignmentExpr);
    // Invoke onNext method with argument of request variable.
    // e.g. requestObserver.onNext(request)
    MethodInvocationExpr onNextMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(requestObserverVarExpr).setMethodName("onNext").setArguments(requestAssignmentExpr.variableExpr().toBuilder().setIsDecl(false).build()).build();
    bodyExprs.add(onNextMethodExpr);
    RegionTag regionTag = RegionTag.builder().setServiceName(clientVarExpr.variable().identifier().name()).setRpcName(method.name()).setIsAsynchronous(true).build();
    return Sample.builder().setBody(bodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList())).setRegionTag(regionTag).build();
}