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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
require 'open-uri'
MATHEMATICA_SYNTAX_URI = "https://reference.wolfram.com/language/guide/AlphabeticalListing.html"
MATHEMATICA_KEYWORDS_FILE = "./lib/rouge/lexers/mathematica/keywords.rb"
namespace :builtins do
task :mathematica do
generator = Rouge::Tasks::Builtins::Mathematica.new
input = URI.open(MATHEMATICA_SYNTAX_URI) { |f| f.read }
keywords = generator.extract_keywords(input)
output = generator.render_output(keywords)
File.write(MATHEMATICA_KEYWORDS_FILE, output)
end
end
module Rouge
module Tasks
module Builtins
class Mathematica
def extract_keywords(input)
keywords = Array.new
input.scrub.scan %r(<span class="IFSans"><a href="/language/ref/(\w+)[.]html">)m do |m|
keywords.push m[0]
end
keywords
end
def render_output(keywords, &b)
return enum_for(:render_output, keywords).to_a.join("\n") unless b
yield "# -*- coding: utf-8 -*- #"
yield "# frozen_string_literal: true"
yield ""
yield "# DO NOT EDIT"
yield ""
yield "# This file is automatically generated by `rake builtins:mathematica`."
yield "# See tasks/builtins/mathematica.rake for more info."
yield ""
yield "module Rouge"
yield " module Lexers"
yield " class Mathematica"
yield " def self.builtins"
yield " @builtins ||= Set.new #{keywords.inspect}"
yield " end"
yield " end"
yield " end"
yield "end"
end
end
end
end
end
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