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

Example 6 with Variable

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

the class ResourceNameHelperClassComposer method createEqualsMethod.

private static MethodDefinition createEqualsMethod(ResourceName resourceName, List<List<String>> tokenHierarchies, TypeStore typeStore) {
    // Create method definition variables.
    Variable oVariable = Variable.builder().setType(TypeNode.withReference(javaObjectReference)).setName("o").build();
    VariableExpr argVarExpr = VariableExpr.builder().setIsDecl(false).setVariable(oVariable).build();
    TypeNode thisClassType = typeStore.get(getThisClassName(resourceName));
    ValueExpr thisValueExpr = ValueExpr.withValue(ThisObjectValue.withType(thisClassType));
    ValueExpr trueValueExpr = ValueExpr.withValue(PrimitiveValue.builder().setType(TypeNode.BOOLEAN).setValue("true").build());
    // Create first if statement's return expression
    ReturnExpr returnTrueExpr = ReturnExpr.withExpr(trueValueExpr);
    // Create second if statement's condition expression
    RelationalOperationExpr oEqualsThisExpr = RelationalOperationExpr.equalToWithExprs(argVarExpr, thisValueExpr);
    RelationalOperationExpr oNotEqualsNullExpr = RelationalOperationExpr.notEqualToWithExprs(argVarExpr, ValueExpr.createNullExpr());
    MethodInvocationExpr getClassMethodInvocationExpr = MethodInvocationExpr.builder().setMethodName("getClass").build();
    RelationalOperationExpr getClassEqualsExpr = RelationalOperationExpr.equalToWithExprs(getClassMethodInvocationExpr, getClassMethodInvocationExpr.toBuilder().setExprReferenceExpr(argVarExpr).build());
    LogicalOperationExpr orLogicalExpr = LogicalOperationExpr.logicalOrWithExprs(oNotEqualsNullExpr, getClassEqualsExpr);
    // Create second if statement's body assignment expression.
    Variable thatVariable = Variable.builder().setName("that").setType(thisClassType).build();
    VariableExpr thatVariableExpr = VariableExpr.builder().setIsDecl(false).setVariable(thatVariable).build();
    CastExpr oCastExpr = CastExpr.builder().setExpr(argVarExpr).setType(thisClassType).build();
    AssignmentExpr thatAssignmentExpr = AssignmentExpr.builder().setVariableExpr(thatVariableExpr.toBuilder().setIsDecl(true).build()).setValueExpr(oCastExpr).build();
    // PubSub special-case handling - exclude _deleted-topic_.
    List<List<String>> processedTokenHierarchies = tokenHierarchies.stream().filter(ts -> !ts.contains(ResourceNameConstants.DELETED_TOPIC_LITERAL)).collect(Collectors.toList());
    // Create return expression in the second if statement's body.
    Set<String> tokenSet = getTokenSet(processedTokenHierarchies);
    Iterator<String> itToken = tokenSet.iterator();
    Expr curTokenExpr = createObjectsEqualsForTokenMethodExpr(thisValueExpr, thatVariableExpr, Variable.builder().setType(TypeNode.STRING).setName(JavaStyle.toLowerCamelCase(itToken.next())).build());
    while (itToken.hasNext()) {
        Expr nextTokenExpr = createObjectsEqualsForTokenMethodExpr(thisValueExpr, thatVariableExpr, Variable.builder().setType(TypeNode.STRING).setName(JavaStyle.toLowerCamelCase(itToken.next())).build());
        curTokenExpr = LogicalOperationExpr.logicalAndWithExprs(curTokenExpr, nextTokenExpr);
    }
    ReturnExpr secondIfReturnExpr = ReturnExpr.withExpr(curTokenExpr);
    // Code: if (o == this) { return true;}
    IfStatement firstIfStatement = IfStatement.builder().setConditionExpr(oEqualsThisExpr).setBody(Arrays.asList(ExprStatement.withExpr(returnTrueExpr))).build();
    // Code: if (o != null || getClass() == o.getClass()) { FoobarName that = ((FoobarName) o);
    // return ..}
    IfStatement secondIfStatement = IfStatement.builder().setConditionExpr(orLogicalExpr).setBody(Arrays.asList(ExprStatement.withExpr(thatAssignmentExpr), ExprStatement.withExpr(secondIfReturnExpr))).build();
    // Create method's return expression.
    ValueExpr falseValueExpr = ValueExpr.withValue(PrimitiveValue.builder().setType(TypeNode.BOOLEAN).setValue("false").build());
    return MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setArguments(argVarExpr.toBuilder().setIsDecl(true).build()).setReturnType(TypeNode.BOOLEAN).setName("equals").setReturnExpr(falseValueExpr).setBody(Arrays.asList(firstIfStatement, secondIfStatement)).build();
}

Example 7 with Variable

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

the class HttpJsonServiceCallableFactoryClassComposer method createOperationCallableMethod.

@Override
protected MethodDefinition createOperationCallableMethod(Service service, TypeStore typeStore) {
    String methodVariantName = "Operation";
    String requestTemplateName = "RequestT";
    String responseTemplateName = "ResponseT";
    List<String> methodTemplateNames = Arrays.asList(requestTemplateName, responseTemplateName, "MetadataT");
    // Always add @BetaApi annotation to the generated createOperationCallable() method for now,
    // until LRO is fully implemented.
    // 
    // Remove the @BetaApi annotation once the LRO feature is fully implemented and stabilized.
    AnnotationNode betaAnnotation = AnnotationNode.withTypeAndDescription(typeStore.get("BetaApi"), "The surface for long-running operations is not stable yet and may change in the" + " future.");
    // Generate generic method without the body
    TypeNode operationType = service.operationType();
    if (operationType == null) {
        operationType = DEFAULT_OPERATION_TYPE;
    }
    MethodDefinition method = createGenericCallableMethod(service, typeStore, /*methodTemplateNames=*/
    methodTemplateNames, /*returnCallableKindName=*/
    methodVariantName, /*returnCallableTemplateNames=*/
    methodTemplateNames, /*methodVariantName=*/
    methodVariantName, /*httpJsonCallSettingsTemplateObjects=*/
    Arrays.asList(requestTemplateName, operationType), /*callSettingsVariantName=*/
    methodVariantName, /*callSettingsTemplateObjects=*/
    methodTemplateNames.stream().map(n -> (Object) n).collect(Collectors.toList()), Arrays.asList(betaAnnotation));
    List<Statement> createOperationCallableBody = new ArrayList<>();
    List<VariableExpr> arguments = new ArrayList<>(method.arguments());
    Variable httpJsonCallSettingsVar = arguments.get(0).variable();
    Variable operationCallSettingsVar = arguments.get(1).variable();
    Variable clientContextVar = arguments.get(2).variable();
    Variable operationsStubVar = arguments.get(3).variable();
    // Generate innerCallable
    VariableExpr innerCallableVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("innerCallable").setType(TypeNode.withReference(ConcreteReference.withClazz(UnaryCallable.class))).build()).setTemplateObjects(Arrays.asList(requestTemplateName, methodVariantName)).build();
    MethodInvocationExpr getInitialCallSettingsExpr = MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.withVariable(operationCallSettingsVar)).setMethodName("getInitialCallSettings").build();
    MethodInvocationExpr createBaseUnaryCallableExpr = MethodInvocationExpr.builder().setStaticReferenceType(TypeNode.withReference(ConcreteReference.withClazz(HttpJsonCallableFactory.class))).setMethodName("createBaseUnaryCallable").setArguments(VariableExpr.withVariable(httpJsonCallSettingsVar), getInitialCallSettingsExpr, VariableExpr.withVariable(clientContextVar)).setReturnType(TypeNode.withReference(ConcreteReference.withClazz(UnaryCallable.class))).build();
    AssignmentExpr innerCallableAssignExpr = AssignmentExpr.builder().setVariableExpr(innerCallableVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(createBaseUnaryCallableExpr).build();
    createOperationCallableBody.add(ExprStatement.withExpr(innerCallableAssignExpr));
    // This is a temporary solution
    VaporReference requestT = VaporReference.builder().setName("RequestT").setPakkage(service.pakkage() + ".stub").build();
    TypeNode initialCallableType = TypeNode.withReference(ConcreteReference.builder().setClazz(HttpJsonOperationSnapshotCallable.class).setGenerics(requestT, operationType.reference()).build());
    // Generate initialCallable
    VariableExpr initialCallableVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("initialCallable").setType(initialCallableType).build()).build();
    MethodInvocationExpr getMethodDescriptorExpr = MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.withVariable(httpJsonCallSettingsVar)).setMethodName("getMethodDescriptor").build();
    MethodInvocationExpr getOperationSnapshotFactoryExpr = MethodInvocationExpr.builder().setExprReferenceExpr(getMethodDescriptorExpr).setMethodName("getOperationSnapshotFactory").build();
    TypeNode operationSnapshotCallableType = TypeNode.withReference(ConcreteReference.builder().setClazz(HttpJsonOperationSnapshotCallable.class).setGenerics(requestT, operationType.reference()).build());
    NewObjectExpr initialCallableObject = NewObjectExpr.builder().setType(operationSnapshotCallableType).setIsGeneric(true).setArguments(innerCallableVarExpr, getOperationSnapshotFactoryExpr).build();
    AssignmentExpr initialCallableAssignExpr = AssignmentExpr.builder().setVariableExpr(initialCallableVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(initialCallableObject).build();
    createOperationCallableBody.add(ExprStatement.withExpr(initialCallableAssignExpr));
    // Generate return statement
    MethodInvocationExpr longRunningClient = MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.withVariable(operationsStubVar)).setMethodName("longRunningClient").build();
    MethodInvocationExpr createOperationCallable = MethodInvocationExpr.builder().setStaticReferenceType(TypeNode.withReference(ConcreteReference.withClazz(HttpJsonCallableFactory.class))).setMethodName("createOperationCallable").setArguments(VariableExpr.withVariable(operationCallSettingsVar), VariableExpr.withVariable(clientContextVar), longRunningClient, initialCallableVarExpr).setReturnType(TypeNode.withReference(ConcreteReference.withClazz(OperationCallable.class))).build();
    // Add body and return statement to method
    return method.toBuilder().setBody(createOperationCallableBody).setReturnExpr(createOperationCallable).build();
}

Example 8 with Variable

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

the class ServiceClientCallableMethodSampleComposer method composeLroCallableMethod.

// Compose sample code for the method where it is CallableMethodKind.LRO.
public static Sample composeLroCallableMethod(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<Expr> bodyExprs = new ArrayList<>();
    bodyExprs.add(requestAssignmentExpr);
    // Create OperationFuture variable expr with invoking client's LRO callable method.
    // e.g. OperationFuture<Empty, WaitMetadata> future =
    // echoClient.waitOperationCallable().futureCall(request);
    TypeNode operationFutureType = TypeNode.withReference(ConcreteReference.builder().setClazz(OperationFuture.class).setGenerics(method.lro().responseType().reference(), method.lro().metadataType().reference()).build());
    VariableExpr operationFutureVarExpr = VariableExpr.withVariable(Variable.builder().setName("future").setType(operationFutureType).build());
    MethodInvocationExpr rpcMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientVarExpr).setMethodName(String.format("%sOperationCallable", JavaStyle.toLowerCamelCase(method.name()))).build();
    rpcMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(rpcMethodInvocationExpr).setMethodName("futureCall").setArguments(requestVarExpr).setReturnType(operationFutureType).build();
    bodyExprs.add(AssignmentExpr.builder().setVariableExpr(operationFutureVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(rpcMethodInvocationExpr).build());
    List<Statement> bodyStatements = bodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList());
    bodyExprs.clear();
    // Add a line comment
    bodyStatements.add(CommentStatement.withComment(LineComment.withComment("Do something.")));
    // Assign response variable with invoking client's LRO method.
    // e.g. if return void, future.get(); or,
    // e.g. if return other type, WaitResponse response = future.get();
    MethodInvocationExpr futureGetMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(operationFutureVarExpr).setMethodName("get").setReturnType(method.lro().responseType()).build();
    boolean returnsVoid = method.lro().responseType().isProtoEmptyType();
    if (returnsVoid) {
        bodyExprs.add(futureGetMethodExpr);
    } else {
        VariableExpr responseVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("response").setType(method.lro().responseType()).build()).setIsDecl(true).build();
        bodyExprs.add(AssignmentExpr.builder().setVariableExpr(responseVarExpr).setValueExpr(futureGetMethodExpr).build());
    }
    bodyStatements.addAll(bodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList()));
    bodyExprs.clear();
    RegionTag regionTag = RegionTag.builder().setServiceName(clientType.reference().name()).setRpcName(method.name()).setIsAsynchronous(true).setOverloadDisambiguation("LRO").build();
    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 9 with Variable

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

the class ServiceClientCallableMethodSampleComposer method composeStreamServerSample.

private static Sample composeStreamServerSample(Method method, VariableExpr clientVarExpr, AssignmentExpr requestAssignmentExpr) {
    List<Expr> bodyExprs = new ArrayList<>();
    bodyExprs.add(requestAssignmentExpr);
    // Create server stream variable expression, and assign it a value by invoking server stream
    // method.
    // e.g. ServerStream<EchoResponse> stream = echoClient.expandCallable().call(request)
    TypeNode serverStreamType = TypeNode.withReference(ConcreteReference.builder().setClazz(ServerStream.class).setGenerics(method.outputType().reference()).build());
    VariableExpr serverStreamVarExpr = VariableExpr.withVariable(Variable.builder().setName("stream").setType(serverStreamType).build());
    MethodInvocationExpr clientStreamCallMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientVarExpr).setMethodName(JavaStyle.toLowerCamelCase(String.format("%sCallable", method.name()))).build();
    clientStreamCallMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientStreamCallMethodInvocationExpr).setMethodName("call").setArguments(requestAssignmentExpr.variableExpr().toBuilder().setIsDecl(false).build()).setReturnType(serverStreamType).build();
    AssignmentExpr streamAssignmentExpr = AssignmentExpr.builder().setVariableExpr(serverStreamVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(clientStreamCallMethodInvocationExpr).build();
    bodyExprs.add(streamAssignmentExpr);
    List<Statement> bodyStatements = bodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList());
    // For-loop on server stream variable expression.
    // e.g. for (EchoResponse response : stream) {
    // // Do something when a response is received.
    // }
    VariableExpr responseVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("response").setType(method.outputType()).build()).setIsDecl(true).build();
    ForStatement forStatement = ForStatement.builder().setLocalVariableExpr(responseVarExpr).setCollectionExpr(serverStreamVarExpr).setBody(Arrays.asList(CommentStatement.withComment(LineComment.withComment("Do something when a response is received.")))).build();
    bodyStatements.add(forStatement);
    RegionTag regionTag = RegionTag.builder().setServiceName(clientVarExpr.variable().identifier().name()).setRpcName(method.name()).setIsAsynchronous(true).build();
    return Sample.builder().setBody(bodyStatements).setRegionTag(regionTag).build();
}

Example 10 with Variable

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

the class ServiceClientCallableMethodSampleComposer method composeStreamBidiSample.

private static Sample composeStreamBidiSample(Method method, VariableExpr clientVarExpr, AssignmentExpr requestAssignmentExpr) {
    List<Expr> bodyExprs = new ArrayList<>();
    // Create bidi stream variable expression and assign it with invoking client's bidi stream
    // method.
    // e.g. BidiStream<EchoRequest, EchoResponse> bidiStream = echoClient.chatCallable().call();
    TypeNode bidiStreamType = TypeNode.withReference(ConcreteReference.builder().setClazz(BidiStream.class).setGenerics(method.inputType().reference(), method.outputType().reference()).build());
    VariableExpr bidiStreamVarExpr = VariableExpr.withVariable(Variable.builder().setName("bidiStream").setType(bidiStreamType).build());
    MethodInvocationExpr clientBidiStreamCallMethodInvoationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientVarExpr).setMethodName(JavaStyle.toLowerCamelCase(String.format("%sCallable", method.name()))).build();
    clientBidiStreamCallMethodInvoationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientBidiStreamCallMethodInvoationExpr).setMethodName("call").setReturnType(bidiStreamType).build();
    AssignmentExpr bidiStreamAssignmentExpr = AssignmentExpr.builder().setVariableExpr(bidiStreamVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(clientBidiStreamCallMethodInvoationExpr).build();
    bodyExprs.add(bidiStreamAssignmentExpr);
    // Add request with default value expression.
    bodyExprs.add(requestAssignmentExpr);
    // Invoke send method with argument request.
    // e.g. bidiStream.send(request);
    MethodInvocationExpr sendMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(bidiStreamVarExpr).setArguments(requestAssignmentExpr.variableExpr().toBuilder().setIsDecl(false).build()).setMethodName("send").build();
    bodyExprs.add(sendMethodInvocationExpr);
    List<Statement> bodyStatements = bodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList());
    // For-loop on bidi stream variable.
    // e.g. for (EchoResponse response : bidiStream) {
    // // Do something when reveive a response.
    // }
    ForStatement forStatement = ForStatement.builder().setLocalVariableExpr(VariableExpr.builder().setVariable(Variable.builder().setType(method.outputType()).setName("response").build()).setIsDecl(true).build()).setCollectionExpr(bidiStreamVarExpr).setBody(Arrays.asList(CommentStatement.withComment(LineComment.withComment("Do something when a response is received.")))).build();
    bodyStatements.add(forStatement);
    RegionTag regionTag = RegionTag.builder().setServiceName(clientVarExpr.variable().identifier().name()).setRpcName(method.name()).setIsAsynchronous(true).build();
    return Sample.builder().setBody(bodyStatements).setRegionTag(regionTag).build();
}