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

Example 11 with Expr

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

the class AbstractServiceClientClassComposer method createMethodVariants.

private static List<MethodDefinition> createMethodVariants(Method method, String clientName, Map<String, Message> messageTypes, TypeStore typeStore, Map<String, ResourceName> resourceNames, List<Sample> samples) {
    List<MethodDefinition> javaMethods = new ArrayList<>();
    String methodName = JavaStyle.toLowerCamelCase(method.name());
    TypeNode methodInputType = method.inputType();
    TypeNode methodOutputType = method.isPaged() ? typeStore.get(String.format(PAGED_RESPONSE_TYPE_NAME_PATTERN, method.name())) : method.outputType();
    if (method.hasLro()) {
        LongrunningOperation lro = method.lro();
        methodOutputType = TypeNode.withReference(typeStore.get("OperationFuture").reference().copyAndSetGenerics(Arrays.asList(lro.responseType().reference(), lro.metadataType().reference())));
    }
    for (List<MethodArgument> signature : method.methodSignatures()) {
        // Get the argument list.
        List<VariableExpr> arguments = signature.stream().map(methodArg -> VariableExpr.builder().setVariable(Variable.builder().setName(JavaStyle.toLowerCamelCase(methodArg.name())).setType(methodArg.type()).build()).setIsDecl(true).build()).collect(Collectors.toList());
        // Request proto builder.
        VariableExpr requestVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("request").setType(methodInputType).build()).setIsDecl(true).build();
        Expr requestBuilderExpr = createRequestBuilderExpr(method, signature, typeStore);
        AssignmentExpr requestAssignmentExpr = AssignmentExpr.builder().setVariableExpr(requestVarExpr).setValueExpr(requestBuilderExpr).build();
        List<Statement> statements = new ArrayList<>();
        statements.add(ExprStatement.withExpr(requestAssignmentExpr));
        MethodInvocationExpr rpcInvocationExpr = MethodInvocationExpr.builder().setMethodName(String.format(method.hasLro() ? "%sAsync" : "%s", methodName)).setArguments(Arrays.asList(requestVarExpr.toBuilder().setIsDecl(false).build())).setReturnType(methodOutputType).build();
        Optional<Sample> methodSample = Optional.of(ServiceClientHeaderSampleComposer.composeShowcaseMethodSample(method, typeStore.get(clientName), signature, resourceNames, messageTypes));
        Optional<String> methodDocSample = Optional.empty();
        if (methodSample.isPresent()) {
            samples.add(methodSample.get());
            methodDocSample = Optional.of(SampleCodeWriter.writeInlineSample(methodSample.get().body()));
        }
        MethodDefinition.Builder methodVariantBuilder = MethodDefinition.builder().setHeaderCommentStatements(ServiceClientCommentComposer.createRpcMethodHeaderComment(method, signature, methodDocSample)).setScope(ScopeNode.PUBLIC).setIsFinal(true).setName(String.format(method.hasLro() ? "%sAsync" : "%s", methodName)).setArguments(arguments);
        if (isProtoEmptyType(methodOutputType)) {
            statements.add(ExprStatement.withExpr(rpcInvocationExpr));
            methodVariantBuilder = methodVariantBuilder.setReturnType(TypeNode.VOID);
        } else {
            methodVariantBuilder = methodVariantBuilder.setReturnType(methodOutputType).setReturnExpr(rpcInvocationExpr);
        }
        if (method.isDeprecated()) {
            methodVariantBuilder = methodVariantBuilder.setAnnotations(Arrays.asList(AnnotationNode.withType(TypeNode.DEPRECATED)));
        }
        methodVariantBuilder = methodVariantBuilder.setBody(statements);
        javaMethods.add(methodVariantBuilder.build());
    }
    return javaMethods;
}

Example 12 with Expr

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

the class AbstractServiceClientClassComposer method buildNestedSetterInvocationExpr.

@VisibleForTesting
static MethodInvocationExpr buildNestedSetterInvocationExpr(MethodArgument argument, Expr referenceExpr) {
    String argumentName = JavaStyle.toLowerCamelCase(argument.name());
    TypeNode argumentType = argument.type();
    Expr argVarExpr = VariableExpr.withVariable(Variable.builder().setName(argumentName).setType(argumentType).build());
    if (argument.isResourceNameHelper()) {
        Expr nullExpr = ValueExpr.createNullExpr();
        Expr isNullCheckExpr = RelationalOperationExpr.equalToWithExprs(argVarExpr, nullExpr);
        MethodInvocationExpr toStringExpr = MethodInvocationExpr.builder().setExprReferenceExpr(argVarExpr).setMethodName("toString").setReturnType(TypeNode.STRING).build();
        argVarExpr = TernaryExpr.builder().setConditionExpr(isNullCheckExpr).setThenExpr(nullExpr).setElseExpr(toStringExpr).build();
    }
    String setterMethodName = String.format(typeToSetterMethodName(argumentType), JavaStyle.toUpperCamelCase(argumentName));
    return MethodInvocationExpr.builder().setExprReferenceExpr(referenceExpr).setMethodName(setterMethodName).setArguments(argVarExpr).build();
}

Example 13 with Expr

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

the class AbstractServiceClientTestClassComposer method createRpcExceptionTestStatements.

protected List<Statement> createRpcExceptionTestStatements(Method method, List<MethodArgument> methodSignature, Map<String, VariableExpr> classMemberVarExprs, Map<String, ResourceName> resourceNames, Map<String, Message> messageTypes) {
    List<VariableExpr> argVarExprs = new ArrayList<>();
    List<Expr> tryBodyExprs = new ArrayList<>();
    if (methodSignature.isEmpty()) {
        // Construct the actual request.
        VariableExpr varExpr = VariableExpr.withVariable(Variable.builder().setType(method.inputType()).setName("request").build());
        argVarExprs.add(varExpr);
        Message requestMessage = messageTypes.get(method.inputType().reference().fullName());
        Preconditions.checkNotNull(requestMessage);
        Map<String, String> valuePatterns = Collections.emptyMap();
        if (getTransportContext().useValuePatterns() && method.hasHttpBindings()) {
            valuePatterns = method.httpBindings().getPathParametersValuePatterns();
        }
        Expr valExpr = DefaultValueComposer.createSimpleMessageBuilderValue(requestMessage, resourceNames, messageTypes, valuePatterns);
        tryBodyExprs.add(AssignmentExpr.builder().setVariableExpr(varExpr.toBuilder().setIsDecl(true).build()).setValueExpr(valExpr).build());
    } else {
        Map<String, String> valuePatterns = Collections.emptyMap();
        if (getTransportContext().useValuePatterns() && method.hasHttpBindings()) {
            valuePatterns = method.httpBindings().getPathParametersValuePatterns();
        }
        for (MethodArgument methodArg : methodSignature) {
            String methodArgName = JavaStyle.toLowerCamelCase(methodArg.name());
            VariableExpr varExpr = VariableExpr.withVariable(Variable.builder().setType(methodArg.type()).setName(methodArgName).build());
            argVarExprs.add(varExpr);
            Expr valExpr = DefaultValueComposer.createMethodArgValue(methodArg, resourceNames, messageTypes, valuePatterns);
            tryBodyExprs.add(AssignmentExpr.builder().setVariableExpr(varExpr.toBuilder().setIsDecl(true).build()).setValueExpr(valExpr).build());
        }
    }
    String rpcJavaName = JavaStyle.toLowerCamelCase(method.name());
    if (method.hasLro()) {
        rpcJavaName += "Async";
    }
    MethodInvocationExpr rpcJavaMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(classMemberVarExprs.get("client")).setMethodName(rpcJavaName).setArguments(argVarExprs.stream().map(e -> (Expr) e).collect(Collectors.toList())).build();
    if (method.hasLro()) {
        rpcJavaMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(rpcJavaMethodInvocationExpr).setMethodName("get").build();
    }
    tryBodyExprs.add(rpcJavaMethodInvocationExpr);
    VariableExpr catchExceptionVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(TypeNode.withExceptionClazz(method.hasLro() ? ExecutionException.class : InvalidArgumentException.class)).setName("e").build()).build();
    List<Statement> catchBody = method.hasLro() ? createRpcLroExceptionTestCatchBody(catchExceptionVarExpr, false) : Arrays.asList(CommentStatement.withComment(LineComment.withComment("Expected exception.")));
    // Assert a failure if no exception was raised.
    tryBodyExprs.add(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("Assert")).setMethodName("fail").setArguments(ValueExpr.withValue(StringObjectValue.withValue("No exception raised"))).build());
    TryCatchStatement tryCatchBlock = TryCatchStatement.builder().setTryBody(tryBodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList())).addCatch(catchExceptionVarExpr.toBuilder().setIsDecl(true).build(), catchBody).build();
    return Arrays.asList(EMPTY_LINE_STATEMENT, tryCatchBlock);
}

Example 14 with Expr

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

the class AbstractServiceSettingsClassComposer method createNestedBuilderConstructorMethods.

private static List<MethodDefinition> createNestedBuilderConstructorMethods(Service service, TypeStore typeStore) {
    TypeNode builderType = typeStore.get(BUILDER_CLASS_NAME);
    MethodDefinition noArgCtor = MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setThrowsExceptions(Arrays.asList(FIXED_TYPESTORE.get("IOException"))).setBody(Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.thisBuilder().setType(builderType).setArguments(CastExpr.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setExpr(ValueExpr.createNullExpr()).build()).build()))).build();
    BiFunction<VariableExpr, Expr, MethodDefinition> ctorMakerFn = (ctorArg, superArg) -> MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setArguments(Arrays.asList(ctorArg.toBuilder().setIsDecl(true).build())).setBody(Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.superBuilder().setType(FIXED_TYPESTORE.get("ClientSettings")).setArguments(superArg).build()))).build();
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setName("clientContext").setType(FIXED_TYPESTORE.get("ClientContext")).build());
    MethodDefinition clientContextCtor = ctorMakerFn.apply(clientContextVarExpr, MethodInvocationExpr.builder().setStaticReferenceType(typeStore.get(ClassNames.getServiceStubSettingsClassName(service))).setMethodName("newBuilder").setArguments(Arrays.asList(clientContextVarExpr)).build());
    VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("settings").setType(typeStore.get(ClassNames.getServiceSettingsClassName(service))).build());
    MethodInvocationExpr settingsBuilderMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(settingsVarExpr).setMethodName("getStubSettings").build();
    settingsBuilderMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(settingsBuilderMethodExpr).setMethodName("toBuilder").build();
    MethodDefinition settingsCtor = ctorMakerFn.apply(settingsVarExpr, settingsBuilderMethodExpr);
    TypeNode stubSettingsBuilderType = getStubSettingsBuilderType(service);
    VariableExpr stubSettingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("stubSettings").setType(stubSettingsBuilderType).build());
    MethodDefinition stubSettingsCtor = ctorMakerFn.apply(stubSettingsVarExpr, stubSettingsVarExpr);
    return Arrays.asList(noArgCtor, clientContextCtor, settingsCtor, stubSettingsCtor);
}

Example 15 with Expr

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

the class AbstractServiceSettingsClassComposer method createCreatorMethod.

private static MethodDefinition createCreatorMethod(Service service, TypeStore typeStore) {
    TypeNode stubClassType = typeStore.get(ClassNames.getServiceStubSettingsClassName(service));
    VariableExpr stubVarExpr = VariableExpr.withVariable(Variable.builder().setName("stub").setType(stubClassType).build());
    TypeNode thisClassType = typeStore.get(ClassNames.getServiceSettingsClassName(service));
    MethodInvocationExpr stubBuilderMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(stubVarExpr).setMethodName("toBuilder").build();
    TypeNode stubBuilderType = TypeNode.withReference(VaporReference.builder().setName("Builder").setEnclosingClassNames(ClassNames.getServiceSettingsClassName(service)).setPakkage(service.pakkage()).build());
    Expr returnMethodExpr = NewObjectExpr.builder().setType(stubBuilderType).setArguments(stubBuilderMethodExpr).build();
    returnMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(returnMethodExpr).setMethodName("build").setReturnType(thisClassType).build();
    return MethodDefinition.builder().setScope(ScopeNode.PUBLIC).setIsStatic(true).setIsFinal(true).setReturnType(thisClassType).setName("create").setArguments(Arrays.asList(stubVarExpr.toBuilder().setIsDecl(true).build())).setThrowsExceptions(Arrays.asList(FIXED_TYPESTORE.get("IOException"))).setReturnExpr(returnMethodExpr).build();
}