https://github.com/eneko/programming-language-keywords

Small ruby script that uses rouge to count keywords in supported programming languages
https://github.com/eneko/programming-language-keywords

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Small ruby script that uses rouge to count keywords in supported programming languages

Host: GitHub
URL: https://github.com/eneko/programming-language-keywords
Owner: eneko
Created: 2021-08-01T16:06:29.000Z (almost 4 years ago)
Default Branch: main
Last Pushed: 2021-08-01T16:17:36.000Z (almost 4 years ago)
Last Synced: 2025-02-09T07:25:19.503Z (5 months ago)
Language: Ruby
Size: 4.88 KB
Stars: 0
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

        # Programming Language Keyword Counts

There was some debate on Twitter this week over if a higher number of

keywords means a programming language is more or less complex.

I was more interested in comparing keywords side-by-side. While this script

does not achieve that goal (yet), it does programmatically count the keywords

for each programming language, [using the Ruby gem `rouge`](http://rouge.jneen.net),

which has over **65 million downloads**, suports over 200 programming languages,

and it's widely used.

## The script

```ruby

#!/usr/bin/env ruby

require 'rouge'

Rouge.load_lexers

# puts Rouge::Lexers::C::keywords

# puts Rouge::Lexers::Swift::keywords  // 💥 error

lexers = Rouge::Lexer.all.sort_by { |lexer| lexer.to_s }

names = lexers.map { |lexer| lexer.title }

keyword_counts = lexers.map { |lexer|

  if lexer.respond_to?(:keywords) && lexer.keywords.respond_to?(:length)

    lexer.keywords.length

  else

    0

  end

}

puts "| Language | Keyword Count |"

puts "| -------- | ------------- |"

names.zip(keyword_counts).each { |name, count|

  puts "| #{name} | #{count} |"

}

```

## The results

| Language | Keyword Count |

| -------- | ------------- |

| ABAP | 944 |

| API Blueprint | 0 |

| ActionScript | 22 |

| Ada | 0 |

| Apache | 0 |

| Apex | 23 |

| AppleScript | 0 |

| ArmAsm | 0 |

| Augeas | 0 |

| Awk | 15 |

| BBCBASIC | 0 |

| BIML | 0 |

| BPF | 0 |

| Batchfile | 8 |

| BibTeX | 0 |

| Brainfuck | 0 |

| BrightScript | 0 |

| 1C (BSL) | 0 |

| C | 33 |

| CMHG | 0 |

| CMake | 0 |

| CSS | 0 |

| csvs | 0 |

| C# | 0 |

| CUDA | 77 |

| Ceylon | 0 |

| CFScript | 17 |

| Clean | 31 |

| Clojure | 12 |

| CoffeeScript | 31 |

| Common Lisp | 0 |

| Config File | 0 |

| Console | 0 |

| Coq | 0 |

| C++ | 68 |

| Crystal | 0 |

| Cypher | 58 |

| Cython | 33 |

| D | 0 |

| Dart | 0 |

| Datastudio | 0 |

| diff | 0 |

| digdag | 0 |

| Docker | 0 |

| DOT | 0 |

| ECL | 135 |

| EEX | 0 |

| EPP | 0 |

| ERB | 0 |

| Eiffel | 0 |

| Elixir | 0 |

| Elm | 0 |

| Email | 0 |

| Erlang | 0 |

| Escape | 0 |

| FSharp | 95 |

| Factor | 0 |

| Fortran | 122 |

| FreeFEM | 9 |

| GDScript | 226 |

| GHC Cmm (C--) | 0 |

| GHC Core | 0 |

| Gherkin | 4 |

| GLSL | 30 |

| Go | 0 |

| Gradle | 31 |

| Graphql | 0 |

| Groovy | 22 |

| HLSL | 62 |

| HOCON | 0 |

| HQL | 498 |

| HTML | 0 |

| HTTP | 0 |

| Hack | 89 |

| Haml | 0 |

| Handlebars | 0 |

| Haskell | 0 |

| Haxe | 31 |

| Hashicorp Configuration Language | 0 |

| HyLang | 30 |

| IDL | 8 |

| INI | 0 |

| Io | 0 |

| Irb | 0 |

| Irb_output | 0 |

| ISBL | 28 |

| IgorPro | 30 |

| J | 0 |

| JSL | 0 |

| JSON | 0 |

| Json-doc | 0 |

| Jsp | 0 |

| JSX | 32 |

| Janet | 0 |

| Java | 0 |

| JavaScript | 32 |

| Jinja | 34 |

| Jsonnet | 13 |

| Julia | 0 |

| Kotlin | 0 |

| LLVM | 309 |

| Lasso | 5 |

| Liquid | 0 |

| Literate CoffeeScript | 0 |

| Literate Haskell | 0 |

| LiveScript | 39 |

| Lua | 0 |

| Lustre | 26 |

| Lutin | 23 |

| M68k | 145 |

| MXML | 0 |

| Magik | 71 |

| Make | 0 |

| Markdown | 0 |

| Mason | 0 |

| Mathematica | 3 |

| MATLAB | 20 |

| MiniZinc | 27 |

| MoonScript | 0 |

| Mosel | 0 |

| MessageTrans | 0 |

| Nasm | 0 |

| NesAsm | 56 |

| nginx | 0 |

| Nim | 0 |

| Nix | 0 |

| OCL | 17 |

| OCaml | 46 |

| Objective-C | 33 |

| Objective-C++ | 68 |

| OpenEdge ABL | 1795 |

| OpenType Feature File | 94 |

| PHP | 70 |

| Pascal | 0 |

| Perl | 0 |

| Plain Text | 0 |

| Plist | 0 |

| Pony | 0 |

| PostScript | 0 |

| powershell | 0 |

| Praat | 0 |

| Prolog | 0 |

| Prometheus | 0 |

| .properties | 0 |

| Protobuf | 0 |

| Puppet | 13 |

| Python | 28 |

| Q | 9 |

| QML | 32 |

| R | 0 |

| Racket | 146 |

| ReScript | 29 |

| ReasonML | 45 |

| Rego | 0 |

| Robot Framework | 0 |

| Ruby | 0 |

| Rust | 42 |

| SAS | 0 |

| SML | 41 |

| SPARQL | 49 |

| SQF | 0 |

| SQL | 491 |

| SSH Config File | 0 |

| Sass | 0 |

| Scala | 0 |

| Scheme | 24 |

| SCSS | 0 |

| sed | 0 |

| shell | 0 |

| Sieve | 0 |

| Slice | 19 |

| Slim | 0 |

| Smalltalk | 0 |

| Smarty | 0 |

| Solidity | 52 |

| SuperCollider | 6 |

| Swift | 0 |

| Systemd | 0 |

| Tcl | 0 |

| TOML | 0 |

| TSX | 40 |

| TTCN3 | 85 |

| TAP | 0 |

| TeX | 0 |

| Terraform | 8 |

| Tulip | 0 |

| Turtle/TriG | 0 |

| Twig | 34 |

| TypeScript | 40 |

| VHDL 2008 | 97 |

| Vala | 0 |

| VCL: Varnish Configuration Language | 23 |

| Velocity | 0 |

| Verilog and System Verilog | 133 |

| VimL | 4 |

| Visual Basic | 120 |

| Vue | 0 |

| Wollok | 0 |

| XML | 0 |

| XPath | 0 |

| XQuery | 0 |

| Xojo | 0 |

| YAML | 0 |

| YANG | 0 |

| Zig | 64 |

## Running the code

```

bundle exec keywords.rb

```

## Caveats

Some lexers in Rouge are based on regular expressions and do not provide an

easy way to retrieve the list of keywords. The most notorious, since it was

the source of the debate, is the programming language Swift.

Still working on this, any help would be appreciated.

## Contact

Find me on Twitter [@eneko](https://twitter.com/eneko)

(c) 2021 Eneko Alonso

ecosyste.ms

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