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

Example 1 with VariableExpr

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

the class AbstractServiceStubSettingsClassComposer method createBuilderHelperMethods.

protected List<MethodDefinition> createBuilderHelperMethods(Service service, TypeStore typeStore) {
    List<MethodDefinition> javaMethods = new ArrayList<>();
    final TypeNode builderReturnType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
    // Create the newBuilder(ClientContext) method.
    Function<Expr, NewObjectExpr> newBuilderFn = argExpr -> NewObjectExpr.builder().setType(builderReturnType).setArguments(argExpr).build();
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setName("clientContext").build());
    javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.NEW_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(builderReturnType).setName("newBuilder").setArguments(clientContextVarExpr.toBuilder().setIsDecl(true).build()).setReturnExpr(newBuilderFn.apply(clientContextVarExpr)).build());
    // Create the toBuilder method.
    javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.TO_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setReturnType(builderReturnType).setName("toBuilder").setReturnExpr(newBuilderFn.apply(ValueExpr.withValue(ThisObjectValue.withType(typeStore.get(ClassNames.getServiceStubClassName(service)))))).build());
    return javaMethods;
}

Example 2 with VariableExpr

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

the class AbstractServiceStubSettingsClassComposer method createNestedClassApplyToAllUnaryMethodsMethod.

private static MethodDefinition createNestedClassApplyToAllUnaryMethodsMethod(TypeNode superType, TypeStore typeStore) {
    List<Reference> apiFunctionTypeGenerics = new ArrayList<>();
    apiFunctionTypeGenerics.addAll(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR.type().reference().generics());
    apiFunctionTypeGenerics.add(TypeNode.VOID_OBJECT.reference());
    TypeNode settingsUpdaterType = TypeNode.withReference(ConcreteReference.builder().setClazz(ApiFunction.class).setGenerics(apiFunctionTypeGenerics).build());
    VariableExpr settingsUpdaterVarExpr = VariableExpr.withVariable(Variable.builder().setType(settingsUpdaterType).setName("settingsUpdater").build());
    String methodName = "applyToAllUnaryMethods";
    Expr superApplyExpr = MethodInvocationExpr.builder().setExprReferenceExpr(ValueExpr.withValue(SuperObjectValue.withType(superType))).setMethodName(methodName).setArguments(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR, settingsUpdaterVarExpr).build();
    TypeNode returnType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
    Expr returnExpr = ValueExpr.withValue(ThisObjectValue.withType(returnType));
    return MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.APPLY_TO_ALL_UNARY_METHODS_METHOD_COMMENTS).setScope(ScopeNode.PUBLIC).setReturnType(returnType).setName(methodName).setArguments(settingsUpdaterVarExpr.toBuilder().setIsDecl(true).build()).setBody(Arrays.asList(ExprStatement.withExpr(superApplyExpr))).setReturnExpr(returnExpr).build();
}

Example 3 with VariableExpr

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

the class AbstractServiceStubSettingsClassComposer method createNestedClassConstructorMethods.

private static List<MethodDefinition> createNestedClassConstructorMethods(Service service, GapicServiceConfig serviceConfig, Map<String, VariableExpr> nestedMethodSettingsMemberVarExprs, TypeStore typeStore) {
    TypeNode builderType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
    List<MethodDefinition> ctorMethods = new ArrayList<>();
    // First argument-less contructor.
    ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setBody(Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.thisBuilder().setType(builderType).setArguments(CastExpr.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setExpr(ValueExpr.createNullExpr()).build()).build()))).build());
    // Second ctor that takes a clientContext argument.
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setName("clientContext").build());
    Reference pagedSettingsBuilderRef = ConcreteReference.withClazz(PagedCallSettings.Builder.class);
    Reference batchingSettingsBuilderRef = ConcreteReference.withClazz(BatchingCallSettings.Builder.class);
    Reference unaryCallSettingsBuilderRef = ConcreteReference.withClazz(UnaryCallSettings.Builder.class);
    Function<TypeNode, Boolean> isUnaryCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(unaryCallSettingsBuilderRef);
    Function<TypeNode, Boolean> isPagedCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(pagedSettingsBuilderRef);
    Function<TypeNode, Boolean> isBatchingCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(batchingSettingsBuilderRef);
    Function<TypeNode, TypeNode> builderToCallSettingsFn = t -> TypeNode.withReference(VaporReference.builder().setName(String.join(DOT, t.reference().enclosingClassNames())).setPakkage(t.reference().pakkage()).build());
    List<Statement> ctorBodyStatements = new ArrayList<>();
    ctorBodyStatements.add(ExprStatement.withExpr(ReferenceConstructorExpr.superBuilder().setType(builderType).setArguments(clientContextVarExpr).build()));
    ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
    ctorBodyStatements.addAll(nestedMethodSettingsMemberVarExprs.entrySet().stream().map(e -> {
        // TODO(miraleung): Extract this into another method.
        // Name is fooBarSettings.
        VariableExpr varExpr = e.getValue();
        TypeNode varType = varExpr.type();
        Preconditions.checkState(e.getKey().endsWith(SETTINGS_LITERAL), String.format("%s expected to end with \"Settings\"", e.getKey()));
        String methodName = getMethodNameFromSettingsVarName(e.getKey());
        if (!isPagedCallSettingsBuilderFn.apply(varType)) {
            if (!isBatchingCallSettingsBuilderFn.apply(varType)) {
                boolean isUnaryCallSettings = isUnaryCallSettingsBuilderFn.apply(varType);
                Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varExpr.type())).setMethodName(isUnaryCallSettings ? "newUnaryCallSettingsBuilder" : "newBuilder").setReturnType(varExpr.type()).build()).build();
                return ExprStatement.withExpr(builderExpr);
            }
            Expr newBatchingSettingsExpr = MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("BatchingSettings")).setMethodName("newBuilder").build();
            newBatchingSettingsExpr = MethodInvocationExpr.builder().setExprReferenceExpr(newBatchingSettingsExpr).setMethodName("build").build();
            String batchingDescVarName = String.format(BATCHING_DESC_PATTERN, JavaStyle.toUpperSnakeCase(methodName));
            Expr batchingSettingsBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varType)).setMethodName("newBuilder").setArguments(VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("BatchingDescriptor")).setName(batchingDescVarName).build())).build();
            batchingSettingsBuilderExpr = MethodInvocationExpr.builder().setExprReferenceExpr(batchingSettingsBuilderExpr).setMethodName("setBatchingSettings").setArguments(newBatchingSettingsExpr).setReturnType(varType).build();
            Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(batchingSettingsBuilderExpr).build();
            return ExprStatement.withExpr(builderExpr);
        }
        String memberVarName = String.format(PAGED_RESPONSE_FACTORY_PATTERN, JavaStyle.toUpperSnakeCase(methodName));
        VariableExpr argVar = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("PagedListResponseFactory")).setName(memberVarName).build());
        Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varExpr.type())).setMethodName("newBuilder").setArguments(argVar).setReturnType(varExpr.type()).build()).build();
        return ExprStatement.withExpr(builderExpr);
    }).collect(Collectors.toList()));
    Expr unaryMethodSettingsBuildersAssignExpr = AssignmentExpr.builder().setVariableExpr(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("ImmutableList")).setGenerics(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR.type().reference().generics()).setMethodName("of").setArguments(nestedMethodSettingsMemberVarExprs.values().stream().filter(v -> isUnaryCallSettingsBuilderFn.apply(v.type()) || isPagedCallSettingsBuilderFn.apply(v.type()) || isBatchingCallSettingsBuilderFn.apply(v.type())).collect(Collectors.toList())).setReturnType(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR.type()).build()).build();
    ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
    ctorBodyStatements.add(ExprStatement.withExpr(unaryMethodSettingsBuildersAssignExpr));
    ctorBodyStatements.add(ExprStatement.withExpr(MethodInvocationExpr.builder().setMethodName("initDefaults").setArguments(ValueExpr.withValue(ThisObjectValue.withType(builderType))).build()));
    ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setArguments(clientContextVarExpr.toBuilder().setIsDecl(true).build()).setBody(ctorBodyStatements).build());
    // Third constructor that takes a ServiceStubSettings.
    TypeNode outerSettingsType = typeStore.get(ClassNames.getServiceStubSettingsClassName(service));
    VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setType(outerSettingsType).setName("settings").build());
    ctorBodyStatements = new ArrayList<>();
    ctorBodyStatements.add(ExprStatement.withExpr(ReferenceConstructorExpr.superBuilder().setType(builderType).setArguments(settingsVarExpr).build()));
    ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
    // TODO(cleanup): Technically this should actually use the outer class's <method>Settings
    // members to avoid decoupling variable names.
    ctorBodyStatements.addAll(nestedMethodSettingsMemberVarExprs.values().stream().map(v -> ExprStatement.withExpr(AssignmentExpr.builder().setVariableExpr(v).setValueExpr(MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.builder().setExprReferenceExpr(settingsVarExpr).setVariable(v.variable()).build()).setMethodName("toBuilder").setReturnType(v.type()).build()).build())).collect(Collectors.toList()));
    ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
    ctorBodyStatements.add(ExprStatement.withExpr(unaryMethodSettingsBuildersAssignExpr));
    ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setArguments(settingsVarExpr.toBuilder().setIsDecl(true).build()).setBody(ctorBodyStatements).build());
    return ctorMethods;
}

Example 4 with VariableExpr

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

the class AbstractServiceStubSettingsClassComposer method createNestedClassInitDefaultsMethod.

private MethodDefinition createNestedClassInitDefaultsMethod(Service service, @Nullable GapicServiceConfig serviceConfig, TypeStore typeStore) {
    // TODO(miraleung): Robustify this against a null serviceConfig.
    TypeNode builderType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
    VariableExpr builderVarExpr = VariableExpr.withVariable(Variable.builder().setType(builderType).setName("builder").build());
    List<Statement> bodyStatements = new ArrayList<>();
    // Iterate through methods twice to so we can have LRO expressions appear last.
    for (Method method : service.methods()) {
        Method.Stream streamKind = method.stream();
        if (streamKind.equals(Method.Stream.CLIENT) || streamKind.equals(Method.Stream.BIDI)) {
            continue;
        }
        if (!Objects.isNull(serviceConfig) && serviceConfig.hasBatchingSetting(service, method)) {
            Optional<GapicBatchingSettings> batchingSettingOpt = serviceConfig.getBatchingSetting(service, method);
            Preconditions.checkState(batchingSettingOpt.isPresent(), String.format("No batching setting found for service %s, method %s", service.name(), method.name()));
            String settingsGetterMethodName = String.format("%sSettings", JavaStyle.toLowerCamelCase(method.name()));
            bodyStatements.add(ExprStatement.withExpr(RetrySettingsComposer.createBatchingBuilderSettingsExpr(settingsGetterMethodName, batchingSettingOpt.get(), builderVarExpr)));
            bodyStatements.add(EMPTY_LINE_STATEMENT);
        }
        bodyStatements.add(ExprStatement.withExpr(RetrySettingsComposer.createSimpleBuilderSettingsExpr(service, serviceConfig, method, builderVarExpr, NESTED_RETRYABLE_CODE_DEFINITIONS_VAR_EXPR, NESTED_RETRY_PARAM_DEFINITIONS_VAR_EXPR)));
        bodyStatements.add(EMPTY_LINE_STATEMENT);
    }
    for (Method method : service.methods()) {
        if (!method.hasLro()) {
            continue;
        }
        bodyStatements.add(ExprStatement.withExpr(RetrySettingsComposer.createLroSettingsBuilderExpr(service, serviceConfig, method, builderVarExpr, NESTED_RETRYABLE_CODE_DEFINITIONS_VAR_EXPR, NESTED_RETRY_PARAM_DEFINITIONS_VAR_EXPR, getTransportContext().operationResponseTransformerType(), getTransportContext().operationMetadataTransformerType())));
        bodyStatements.add(EMPTY_LINE_STATEMENT);
    }
    return MethodDefinition.builder().setScope(ScopeNode.PRIVATE).setIsStatic(true).setReturnType(builderType).setName("initDefaults").setArguments(builderVarExpr.toBuilder().setIsDecl(true).build()).setBody(bodyStatements).setReturnExpr(builderVarExpr).build();
}

Example 5 with VariableExpr

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

the class AbstractServiceStubSettingsClassComposer method generate.

@Override
public GapicClass generate(GapicContext context, Service service) {
    // TODO(miraleung): Robustify this against a null serviceConfig.
    GapicServiceConfig serviceConfig = context.serviceConfig();
    Map<String, Message> messageTypes = context.messages();
    String pakkage = String.format("%s.stub", service.pakkage());
    TypeStore typeStore = createDynamicTypes(service, pakkage);
    List<Sample> samples = new ArrayList<>();
    Set<String> deprecatedSettingVarNames = new HashSet<>();
    Map<String, VariableExpr> methodSettingsMemberVarExprs = createMethodSettingsClassMemberVarExprs(service, serviceConfig, typeStore, /* isNestedClass= */
    false, deprecatedSettingVarNames);
    String className = ClassNames.getServiceStubSettingsClassName(service);
    List<CommentStatement> classHeaderComments = createClassHeaderComments(service, typeStore.get(className), samples);
    ClassDefinition classDef = ClassDefinition.builder().setPackageString(pakkage).setHeaderCommentStatements(classHeaderComments).setAnnotations(createClassAnnotations(service)).setScope(ScopeNode.PUBLIC).setName(className).setExtendsType(createExtendsType(service, typeStore)).setStatements(createClassStatements(service, serviceConfig, methodSettingsMemberVarExprs, messageTypes, typeStore)).setMethods(createClassMethods(service, methodSettingsMemberVarExprs, deprecatedSettingVarNames, typeStore)).setNestedClasses(Arrays.asList(createNestedBuilderClass(service, serviceConfig, typeStore))).build();
    return GapicClass.create(GapicClass.Kind.STUB, classDef, SampleComposerUtil.handleDuplicateSamples(samples));
}