Project: docrb-parser - The Ruby Toolbox

Docrb is an opinionated documentation generator for Ruby projects. It works by parsing source-code and comments preceding classes, modules, attributes, and methods, and generates a static website with its findings. You can check Logrb's documentation to see Docrb in action!

Beta quality! Hey there! As far as we are already using Docrb on a few projects (some private, some public), there may still be some rough edges. In case you run into any issue, please do tell us using GitHub's issue tracker! 💕

Installing

Install docrb by adding it to your bundle. Remember to place it in your development/test group, and to not auto require it!

group :development, :test do
  gem "docrb", require: false
end

# or...

gem "docrb", require: false

Using

As mentioned in the previous section, Docrb is an opinionated documentation generator. This means that it uses a specific formatting in order to infer methods, annotations and references. As long as your project adheres to those conventions, Docrb will be able to automatically generate and augment your documentation.

Simple Example

# Internal: foo raises an ZeroDivisionError
def foo
  3 / 0
end

The block above will be enough to emit a documentation for it including a label indicating the method is considered to be "Internal". The following prefixes are handled by Docrb automatically:

Private
Public
Internal
Deprecated

As long as a documentation block begins with one of the keywords above (case insensitive) followed by a colon, Docrb will annotate the method accordingly.

Documenting parameters

When documenting parameters, just place a blank line between the main documentation, followed by an aligned list of parameters. For instance:

# Greets a provided name with an optional greeting
#
# name      - The person's name
# greeting: - The greeting to use. Defaults to "Oi"
def greet(name, greeting: nil)
  greeting ||= "Oi"
  "#{greeting} #{name}"
end

Adding code examples

Docrb can highlight code examples automatically too! Just add an extra indentation level to create a code example block:

# Greets a provided name with an optional greeting
#
# name      - The person's name
# greeting: - The greeting to use. Defaults to "Oi"
#
# Usage example:
#
#   greet("Fefo", "Aye")
#   # => Aye Fefo
def greet(name, greeting: nil)
  greeting ||= "Oi"
  "#{greeting} #{name}"
end

Adding references

Docrb automatically searches for references to other methods and classes/modules. The following patterns are assumed as references and linked automatically:

#method_name
ModuleOrClass.method_name
ModuleOrClass#method_name
ModuleOrClass::ChildModuleOrClass.method_name
ModuleOrClass::ChildModuleOrClass#method_name
::SomeRootClass#method_name
::SomeRootClass.method_name
::SomeRootClass.method_name
ModuleOrClass
ModuleOrClass::ChildModuleOrClass
::ModuleOrClass

Generating Documentation

Simply cd to your project's directory, and invoke the docrb utility. For instance, the following command line is used to generate Logrb's documentation, which is then generated on an output directory:

$ docrb -blib . output

The tool can usually detect all it needs, but if needed, extra options may be provided:

$ docrb --help

Usage: bin/docrb [options] [input directory] [output directory]
        --help                       Prints this help
    -b, --base=PATH                  Base directory to search for source files. Defaults to the provided input directory.
    -r, --readme=PATH                Path for README.md file. When omitted, Docrb searches for a README.md file in the provided input directory.
    -n, --name=NAME                  Name of the project being documented. When omitted, Docrb attempts to extract information from a .gemspec file in the provided input directory.
    -s, --summary=SUMMARY            Short summary of the project being documented. When omitted, Docrb attempts to extract information from a .gemspec file in the provided input directory.
    -h, --host=URL                   URL for the gem's hosted URL. When omitted, Docrb attempts to extract information from a .gemspec file in the provided input directory.
    -g, --git-repo=URL               URL for the repository containing the documented project. When omitted, Docrb attempts to extract this information from the .git directory present in the provided input directory, if any.
        --authors a,b,c              List of name of project authors. When omitted, Docrb attempts to extract information from a .gemspec file in the provided input directory.
    -l, --license=LICENSE            The project's license. When omitted, Docrb attempts to extract information from a .gemspec file in the provided input directory.

Contributing

Yay! Contributions are more than welcome! See CONTRIBUTING.md to get a summary on how to hack Docrb. Also, ensure to take a look at our code of conduct! Everyone interacting in the Docrb project's codebases, issue trackers, chat rooms, and mailing lists is expected to follow it. Rule of thumb: be nice.

License

The MIT License (MIT)

Copyright (c) 2021-2024 Vito Sartori

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

docrb-parser

Runtime