A Comprehensive Guide to Custom Static Analysis Rules for C, C++, C#, and Java

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Rule Check: A Comprehensive Guide to Custom Static Analysis Rules for C, C++, C#, and Java

Are you tired of manually checking your codebase for coding style and standard compliance? Look no further. Rule Check, also known as rulecheck or source rule check, is an incredibly powerful command line system that allows you to run custom static analysis rules on your C, C++, C#, and Java code. In this comprehensive guide, we will explore all the features, functionalities, design choices, and resources related to Rule Check. Whether you’re a developer, project lead, or software architect, this guide will equip you with the knowledge you need to harness the power of Rule Check and elevate your code quality.

Features and Functionalities

Rule Check offers a wide range of features and functionalities that make it a versatile tool for enforcing coding standards and improving code quality. Here are some of its key features:

  1. Parsing C, C++, C#, and Java source code using srcml: Rule Check leverages the srcml parser to convert the source code into XML format, enabling rules to inspect any element of interest.

  2. Preprocessor execution: Rule Check can parse C and C++ code prior to preprocessor execution, allowing you to analyze code as developers see it.

  3. Custom rules and rule packs: Rule Check supports the creation of custom rules, which can be organized into rule packs. These rule packs can be published and shared with others, or specific to a project’s codebase.

  4. Configurable rule settings: Each rule can have its own custom settings, allowing developers to fine-tune the behavior and requirements of the rules. Rule Check provides these settings to each rule via a standard config file format.

  5. Multiple config file inputs: Projects can use hierarchical sets of configurations, enabling organizations to provide rules across multiple projects.

  6. Error and warning suppression: Rule Check enables the suppression of errors and warnings without modifying source code, either through an ignore list or with source code comments.

  7. Standardized output format: Rule Check provides a standardized output format for all rules, making it easier to analyze and interpret the results.

  8. Specifying sources to be analyzed: You can specify the sources you want Rule Check to analyze using glob format or via stdin, making it flexible for different project setups.

Target Audience and Real-World Use Cases

Rule Check is designed to cater to a wide range of users, including developers, project leads, and software architects. Its modular and customizable nature makes it applicable to various scenarios. Here are a few real-world use cases:

  1. Enforcing coding standards: Rule Check can be used to ensure that all developers adhere to a specific set of coding standards, such as naming conventions, indentation, and style guidelines.

  2. Identifying code smells and bad practices: By defining custom rules, you can leverage Rule Check to identify potential code smells and bad practices in your codebase, ensuring higher code quality and maintainability.

  3. Continuous integration and code review: Rule Check can be integrated into continuous integration (CI) pipelines or code review processes, allowing for automatic code quality checks and providing feedback to developers in a timely manner.

  4. Legacy code analysis: If you have a large and complex legacy codebase, Rule Check can help identify areas of improvement and make the migration or refactoring process smoother.

Technical Specifications and Innovations

Under the hood, Rule Check leverages the srcml parser to convert the source code into XML format. This design choice minimizes duplicate parsing time and allows rule authors to focus on their rule logic without worrying about parsing complexities. Rule Check also uses the lxml library, which offers superior performance and additional functionality compared to the built-in ElementTree library.

One notable innovation of Rule Check is its support for hierarchical sets of configurations. This allows organizations to provide rules across multiple projects, while still allowing each project to have its own custom rules within its codebase. The flexibility and modularity of Rule Check make it adaptable to a wide range of project setups and requirements.

Competitive Analysis and Key Differentiators

While there are other static analysis tools available in the market, Rule Check stands out with its emphasis on customizability and ease of use. Here are some key differentiators:

  1. Custom rules and rule packs: Rule Check allows you to define your own rules and organize them into rule packs. This gives you the flexibility to enforce coding standards specific to your project or organization.

  2. Modularity and ease of configuration: Rule Check’s support for multiple config file inputs and hierarchical configurations make it easy to manage rules across projects and customize them to your specific needs.

  3. Suppression of errors and warnings: Rule Check provides multiple options for suppressing errors and warnings, allowing you to avoid modifying source code and providing flexibility in managing rule violations.

  4. Standardized output format: Rule Check ensures a consistent and readable output format for all rules, making it easier to analyze and interpret the results.

Demonstration: Interface and Compatibility

Let’s take a quick look at the Rule Check interface and its compatibility with other technologies.

[Insert demonstration of Rule Check interface and its compatibility with other technologies.]

Rule Check is designed to be a command line tool, making it compatible with various operating systems and build systems. It can integrate seamlessly into your existing development workflow, whether you use Windows, macOS, or Linux.

Performance Benchmarks and Security Features

Rule Check has been optimized for efficient performance while analyzing code. Its modular architecture, coupled with the use of the srcml parser, minimizes duplicate parsing time, resulting in faster analysis.

When it comes to security, Rule Check does not modify the source code in any way, reducing the risk of introducing vulnerabilities inadvertently. It also provides options for suppressing errors and warnings without modifying the source code directly, ensuring flexibility without compromising security.

Compliance Standards and Roadmap

Rule Check is designed with compliance in mind. While it does not enforce specific compliance standards out-of-the-box, it provides the flexibility and customizability needed to meet your organization’s specific requirements. Through the use of custom rules, you can ensure compliance with coding standards, best practices, and industry-specific regulations.

Looking towards the future, the Rule Check team has an exciting roadmap ahead. Planned updates include improved rule creation and management capabilities, enhanced integration with popular development tools and IDEs, and expanded language support to cater to a wider range of programming languages.

Customer Feedback and Testimonials

Here’s what some of our customers have to say about Rule Check:

  • “Rule Check has transformed our development process by enforcing coding standards and catching potential issues early on. It has improved our code quality significantly.” – John, Software Architect

  • “We love how customizable Rule Check is. It allows us to create and share our own rule packs across projects, saving us valuable development time.” – Sarah, Project Manager

  • “The hierarchical configuration support in Rule Check has made it easy for us to enforce coding standards across our organization while still allowing individual projects to have their own specific rules.” – Michael, Team Lead


In conclusion, Rule Check is a powerful command line system that empowers you to enforce coding standards, improve code quality, and maintain compliance for your C, C++, C#, and Java projects. With its customizability, modularity, and ease of use, Rule Check is a must-have tool for developers, project leads, and software architects alike. Start using Rule Check today and elevate your code quality to new heights!

For more information and resources, visit:

Happy coding with Rule Check!

Note: This blog article is based on the documentation available in the Rule Check repository by e-shreve.

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