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Contributing to venus

I'm glad you are interested in contributing to venus!

Table of Contents

  • How can I contribute?
    • Reporting a Bug
    • Requesting an Enhancement
    • Submitting a Pull Request
  • Development
    • Getting Started
    • Documentation
    • Sourcemap
    • What should I work on?
    • Code Guidelines

How can I contribute?

There are many ways to contribute to venus, not all of which require writing code!

Reporting a Bug

Some things which would be helpful to include:

  • What browser you were using
  • A code sample, if applicable
  • The expected result vs what actually happened

Requesting an Enhancement

Enhancement requests are welcomed. Feel free to open a Github Issue with any suggestions.

Submitting a Pull Request

Pull requests are welcome. Pull requests should include:

  • A description of what your pull request does
  • What existing issues (if any) it fixes

I will try to review all pull requests in a timely manner.

Development

Getting Started

Start by forking venus on Github. Then pull the repository and enter the directory:

$ git pull <your fork>
$ cd venus
$ git submodule update --init --recursive

Install node packages and grunt. You might need to install Node.js and npm.

$ npm install
$ npm install -g grunt

Build the backend:

$ ./gradlew build

Build the frontend+backend bundle:

$ grunt dist

Run the unit tests:

$ grunt test

If everything works, you can start developing now! Start by creating a new git branch:

$ git checkout -b <feature branch> develop

Note that feature branches should be based off the develop branch, according to the Gitflow Workflow.

Make any changes you need.

To recompile:

$ ./gradlew build && grunt dist

You can see your local version of venus by opening out/index.html in any browser.

Documentation

Javadoc can be generated by running ./gradlew dokka. The resulting documentation is in the doc/ folder.

Sourcemap

All source code is included in the src directory.

  • main - the main application itself
    • frontend - the visual part of venus
      • css - all CSS files should be included here
      • images - all images should be included here
      • js - all Javascript files should be included here
      • index.html - the venusbackend.simulator frontend itself
    • kotlin/venus - the backend part of venus
      • venusbackend.assembler - the venusbackend.assembler backend
        • pseudos - all pseudoinstructions
      • glue - code which links the backend and frontend
      • linker - linker which resolves branches and jumps
      • venusbackend.riscv - includes things common to all parts of venus
        • insts - contains all instructions and DSL
          • dsl - a domain specific language for specifying instructions
            • disasms - describe how to get from machine code to human readable code
            • formats - describes the fields of an instruction which must be set
            • impls - gives an implementation of an instruction
            • parsers - describe how to get from an instruction to its machine code
            • relocators - describe how to fill in fields to relocate an instruction
      • venusbackend.simulator - the instruction set venusbackend.simulator
        • diff - describe how to undo operations
  • test - tests which are run with grunt test

What should I work on?

Check out the Issues tab. Larger projects will be included in the Projects tab.

Code Guidelines

I highly recommend using IntelliJ IDEA. It has great built-in Kotlin support and will format your code appropriately. ktlint will run automatically and fail your build if it doesn't pass some basic lint tests, however it is not comprehensive.

  • Indentation is four spaces for all files -- except HTML which is two spaces.
  • Avoid semicolons.
  • Braces should be on the same line.
  • Use lowerCamelCase for everything, except classes which should use PascalCase.