Examples with Pair com.google.common.base.Pair used on opensource projects

Example 1 with Pair

use of com.google.common.base.Pair in project tiger by google.

the class CoreInjectorGenerator method generateTopLevelInjectors.

private void generateTopLevelInjectors() {
    messager.printMessage(Kind.NOTE, "generateTopLevelInjectors");
    SetMultimap<BindingKey, ClassName> keyToPackagedInjectorMap = utils.reverseSetMultimap(generatedBindingsForPackagedInjector);
    for (CoreInjectorInfo coreInjectorInfo : orderedCoreinjectors) {
        TypeSpec.Builder injectorBuilder = TypeSpec.classBuilder(getTopLevelInjectorName(coreInjectorInfo, topLevelInjectorPrefix, topLevelInjectorSuffix)).addAnnotation(AnnotationSpec.builder(Generated.class).addMember("value", "$S", GENERATOR_NAME).build()).addModifiers(Modifier.PUBLIC);
        // method simple name and type.
        Set<Pair<String, TypeName>> injectionMethodsDone = new HashSet<>();
        // Member injector interfaces.
        for (TypeElement injector : coreInjectorToComponentMap.get(coreInjectorInfo)) {
            injectorBuilder.addSuperinterface(TypeName.get(injector.asType()));
        }
        // Ctor
        MethodSpec.Builder ctorBuilder = MethodSpec.constructorBuilder().addModifiers(Modifier.PUBLIC);
        ctorBuilder.addStatement("$T.out.printf($S, $L)", ClassName.get(System.class), "This is tiger: %s\n", "this");
        // Ctor - Containing top level injector.
        // TODO: remove this .
        String containingInjectorName = "containingInjector";
        if (componentTree.get(coreInjectorInfo) != null) {
            ClassName containingInjectorClassName = ClassName.get(topLevelPackageString, getTopLevelInjectorName(componentTree.get(coreInjectorInfo), topLevelInjectorPrefix, topLevelInjectorSuffix));
            injectorBuilder.addField(containingInjectorClassName, containingInjectorName, Modifier.PRIVATE);
            ctorBuilder.addParameter(containingInjectorClassName, containingInjectorName).addStatement("this.$L = $L", containingInjectorName, containingInjectorName);
        }
        // Ctor - ancester top level injectors.
        CoreInjectorInfo tmp = coreInjectorInfo;
        while (componentTree.get(tmp) != null) {
            tmp = componentTree.get(tmp);
            ClassName className = ClassName.get(topLevelPackageString, getTopLevelInjectorName(tmp, topLevelInjectorPrefix, topLevelInjectorSuffix));
            String sourceCodeName = utils.getSourceCodeName(className);
            injectorBuilder.addField(className, sourceCodeName);
            if (tmp.equals(componentTree.get(coreInjectorInfo))) {
                ctorBuilder.addStatement("this.$L = $L", sourceCodeName, containingInjectorName);
            } else {
                ctorBuilder.addStatement("this.$L = $L.$L", sourceCodeName, containingInjectorName, sourceCodeName);
            }
        }
        // Ctor - Component dependencies
        for (TypeElement dep : utils.sortByFullName(coreInjectorToComponentDependencyMap.get(coreInjectorInfo))) {
            if (utils.isEitherComponent(dep)) {
                continue;
            }
            ClassName className = ClassName.get(dep);
            String sourceCodeName = utils.getSourceCodeName(className);
            injectorBuilder.addField(className, sourceCodeName, Modifier.PUBLIC);
            ctorBuilder.addParameter(className, sourceCodeName).addStatement("this.$L = $L", sourceCodeName, sourceCodeName);
        }
        // Ctor - @BindsInstance
        for (BindingKey key : utils.sortBindingKeys(coreInjectorToBindsInstanceMap.get(coreInjectorInfo))) {
            String sourceCodeName = utils.getSourceCodeNameHandlingBox(key, dependencies);
            injectorBuilder.addField(key.getTypeName(), sourceCodeName, Modifier.PUBLIC);
            ctorBuilder.addParameter(key.getTypeName(), sourceCodeName).addStatement("this.$L = $L", sourceCodeName, sourceCodeName);
        }
        // Ctor - Passed modules.
        Set<TypeElement> allPassedModules = new HashSet<>();
        allPassedModules.addAll(nonNullaryCtorModules.get(coreInjectorInfo));
        allPassedModules.addAll(nonNullaryCtorUnscopedModules);
        for (TypeElement passedModule : utils.sortByFullName(allPassedModules)) {
            String moduleName = utils.getSourceCodeName(passedModule);
            ClassName moduleTypeName = (ClassName) TypeName.get(passedModule.asType());
            ctorBuilder.addParameter(moduleTypeName, moduleName).addStatement("this.$N = $N", moduleName, moduleName);
            injectorBuilder.addField(moduleTypeName, moduleName, Modifier.PRIVATE).addMethod(MethodSpec.methodBuilder(utils.getGetMethodName(moduleTypeName)).addModifiers(Modifier.PUBLIC).returns(moduleTypeName).addStatement("return $N", moduleName).build());
        }
        injectorBuilder.addMethod(ctorBuilder.build());
        // Injection methods and non-injection methods.
        Set<String> miscMethodNames = new HashSet<>();
        Set<TypeElement> allMembersInjectors = Sets.newHashSet(coreInjectorToComponentMap.get(coreInjectorInfo));
        for (TypeElement injector : allMembersInjectors) {
            for (Element element : processingEnv.getElementUtils().getAllMembers(injector)) {
                messager.printMessage(Kind.NOTE, "method: " + element);
                if (!element.getKind().equals(ElementKind.METHOD)) {
                    continue;
                }
                ExecutableElement method = (ExecutableElement) element;
                ExecutableType methodType = (ExecutableType) processingEnv.getTypeUtils().asMemberOf((DeclaredType) injector.asType(), method);
                // Injection methods.
                if (utils.isInjectionMethod(element)) {
                    // TODO: add duplicate check for provision method also.
                    if (injectionMethodsDone.add(Pair.of(method.getSimpleName().toString(), TypeName.get(Iterables.getOnlyElement(methodType.getParameterTypes())))) == false) {
                        messager.printMessage(Kind.WARNING, "duplicate injection method: " + method);
                        continue;
                    }
                    TypeMirror typeMirror = Iterables.getOnlyElement(methodType.getParameterTypes());
                    TypeElement cls = (TypeElement) ((DeclaredType) typeMirror).asElement();
                    messager.printMessage(Kind.NOTE, TAG + ".generateTopLevelInjector-injection method : " + methodType);
                    ClassName packagedInjectorClassName = getPackagedInjectorNameOfScope(utils.getPackageString(cls), coreInjectorInfo.getScope());
                    injectorBuilder.addMethod(MethodSpec.methodBuilder(method.getSimpleName().toString()).addModifiers(Modifier.PUBLIC).addParameter(ClassName.get(cls), "arg").addStatement("$L().inject(arg)", utils.getGetMethodName(packagedInjectorClassName)).build());
                } else if (utils.isComponentProvisionMethod(element)) {
                    messager.printMessage(Kind.ERROR, "Injecting components is not supported: " + element);
                } else if (utils.isSubcomponentProvisionMethod(element)) {
                    generateGetSubcomponentMethod((ExecutableElement) element, injectorBuilder);
                } else if (utils.isProvisionMethodInInjector(element)) {
                    if (!miscMethodNames.add(method.getSimpleName().toString())) {
                        continue;
                    }
                    MethodSpec.Builder methodBuilder = MethodSpec.methodBuilder(method.getSimpleName().toString()).addModifiers(Modifier.PUBLIC).returns(TypeName.get(method.getReturnType()));
                    BindingKey providedKey = utils.getKeyProvidedByMethod(method);
                    ClassName packagedInjectorClassName = null;
                    for (ClassName className : keyToPackagedInjectorMap.get(providedKey)) {
                        if (isInjectorOfScope(className, coreInjectorInfo.getScope())) {
                            packagedInjectorClassName = className;
                            break;
                        }
                    }
                    if (packagedInjectorClassName == null) {
                        messager.printMessage(Kind.WARNING, String.format("PackagedInjector or multiBindingInjector not found for key: %s " + "from provisionMethod: %s. Probably it is not used.", providedKey, method));
                        // Create a dumb method
                        String statement = "return ";
                        TypeKind typeKind = method.getReturnType().getKind();
                        if (typeKind.equals(TypeKind.BOOLEAN)) {
                            statement += "false";
                        } else if (typeKind.equals(TypeKind.CHAR)) {
                            statement += "\'0\'";
                        } else if (typeKind.isPrimitive()) {
                            statement += "0";
                        } else {
                            statement += "null";
                        }
                        methodBuilder.addStatement(statement);
                    } else {
                        String statement = "return $L().$L()";
                        methodBuilder.addStatement(statement, utils.getGetMethodName(packagedInjectorClassName), utils.getProvisionMethodName(dependencies, providedKey));
                    }
                    // messager.printMessage(Kind.NOTE, "provision method added: " + methodBuilder.build());
                    injectorBuilder.addMethod(methodBuilder.build());
                // } else if (utils.isEitherComponentProvisionMethod(element)) {
                // // TODO: support get component method.
                // if(utils.isComponentProvisionMethod(element)) {
                // throw new RuntimeException("component provision method is not suported yet.");
                // }
                // generateGetSubcomponentMethod((ExecutableElement) element, injectorBuilder);
                // } else if (utils.isEitherComponentBuilderProvisionMethod(element)) {
                // /**
                // * TODO: handle it in the way consistent with other {@link DependencySourceType} in
                // * {@link #generateProvisionMethodIfNeeded(BindingKey, TypeElement)}
                // */
                // generateExplicitProvisionMethodForEitherComponentBuilder(
                // (ExecutableElement) element, injectorBuilder);
                } else if (isIrrelevantMethodInInjector(element)) {
                // do nothing
                } else {
                    messager.printMessage(Kind.WARNING, String.format("Element %s ignored from injector %s.", element, injector));
                }
            }
        }
        // Methods to get packaged injectors.
        for (Map.Entry<ClassName, TypeSpec.Builder> entry : packagedInjectorBuilders.entrySet()) {
            ClassName injectorClassName = entry.getKey();
            if (!coreInjectorInfo.equals(getComponentFromPackagedInjectorClassName(injectorClassName))) {
                continue;
            }
            String packagedInjectorSourceCodeName = utils.getSourceCodeName(injectorClassName);
            injectorBuilder.addField(injectorClassName, packagedInjectorSourceCodeName, Modifier.PRIVATE);
            MethodSpec.Builder methodSpecBuilder = MethodSpec.methodBuilder(utils.getGetMethodName(injectorClassName)).addModifiers(Modifier.PUBLIC).returns(injectorClassName).addStatement("$T result = $N", injectorClassName, packagedInjectorSourceCodeName).beginControlFlow("if (result == null)");
            StringBuilder stringBuilder = new StringBuilder("result = $N = new $T(this");
            if (componentTree.get(coreInjectorInfo) != null) {
                ClassName containingPackageInjectorClassName = getInjectorNameOfScope(injectorClassName, componentTree.get(coreInjectorInfo).getScope());
                stringBuilder.append(", ").append(containingInjectorName).append(".").append(utils.getGetMethodName(containingPackageInjectorClassName)).append("()");
            }
            stringBuilder.append(")");
            methodSpecBuilder.addStatement(stringBuilder.toString(), packagedInjectorSourceCodeName, injectorClassName);
            methodSpecBuilder.endControlFlow().addStatement("return result");
            injectorBuilder.addMethod(methodSpecBuilder.build());
        }
        // Builder and builder().
        generateInjectorBuilder(coreInjectorInfo, injectorBuilder);
        ClassName builderClassName = getTopLevelInjectorBuilderClassName(coreInjectorInfo);
        MethodSpec.Builder methodSpecBuilder = // "Dagger compatible component will have "builder()", we need a different name.
        MethodSpec.methodBuilder("getBuilder").addModifiers(Modifier.PUBLIC, Modifier.STATIC).returns(builderClassName).addStatement("return new $T()", builderClassName);
        injectorBuilder.addMethod(methodSpecBuilder.build());
        // provision methods for (sub)component builders that can be provided by this core injector.
        for (TypeElement b : coreInjectorToBothBuilderMap.get(coreInjectorInfo)) {
            generateImplicitProvisionMethodForEitherComponentBuilderInTopLevelInjector(injectorBuilder, b);
        }
        // Write
        JavaFile javaFile = JavaFile.builder(topLevelPackageString, injectorBuilder.build()).build();
        try {
            javaFile.writeTo(processingEnv.getFiler());
        } catch (IOException e) {
            messager.printMessage(Kind.ERROR, e.toString());
        }
    }
}