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Path: /opt/chef/embedded/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/helpers/

Viewing File: documentation_helpers.rb

# frozen_string_literal: true

class Pry
  module Helpers
    # This class contains methods useful for extracting
    # documentation from methods and classes.
    module DocumentationHelpers
      YARD_TAGS = %w[
        param return option yield attr attr_reader attr_writer deprecate example
        raise
      ].freeze

      module_function

      def process_rdoc(comment)
        comment = comment.dup
        last_match_ruby = proc do
          SyntaxHighlighter.highlight(Regexp.last_match(1))
        end
        comment.gsub(%r{<code>(?:\s*\n)?(.*?)\s*</code>}m, &last_match_ruby)
          .gsub(%r{<em>(?:\s*\n)?(.*?)\s*</em>}m) { "\e[1m#{Regexp.last_match(1)}\e[0m" }
          .gsub(%r{<i>(?:\s*\n)?(.*?)\s*</i>}m) { "\e[1m#{Regexp.last_match(1)}\e[0m" }
          .gsub(%r{<tt>(?:\s*\n)?(.*?)\s*</tt>}m, &last_match_ruby)
          .gsub(/\B\+(\w+?)\+\B/) { "\e[32m#{Regexp.last_match(1)}\e[0m" }
          .gsub(/((?:^[ \t]+.+(?:\n+|\Z))+)/, &last_match_ruby)
          .gsub(/`(?:\s*\n)?([^\e]*?)\s*`/) { "`#{last_match_ruby.call}`" }
      end

      def process_yardoc_tag(comment, tag)
        in_tag_block = nil
        comment.lines.map do |v|
          if in_tag_block && v !~ /^\S/
            Pry::Helpers::Text.strip_color Pry::Helpers::Text.strip_color(v)
          elsif in_tag_block
            in_tag_block = false
            v
          else
            in_tag_block = true if v =~ /^@#{tag}/
            v
          end
        end.join
      end

      def process_yardoc(comment)
        (YARD_TAGS - %w[example])
          .inject(comment) { |a, v| process_yardoc_tag(a, v) }
          .gsub(/^@(#{YARD_TAGS.join("|")})/) { "\e[33m#{Regexp.last_match(1)}\e[0m" }
      end

      def process_comment_markup(comment)
        process_yardoc process_rdoc(comment)
      end

      # @param [String] code
      # @return [String]
      def strip_comments_from_c_code(code)
        code.sub(%r{\A\s*/\*.*?\*/\s*}m, '')
      end

      # Given a string that makes up a comment in a source-code file parse out the content
      # that the user is intended to read. (i.e. without leading indentation, #-characters
      # or shebangs)
      #
      # @param [String] comment
      # @return [String]
      def get_comment_content(comment)
        comment = comment.dup
        # Remove #!/usr/bin/ruby
        comment.gsub!(/\A\#!.*$/, '')
        # Remove leading empty comment lines
        comment.gsub!(/\A\#+?$/, '')
        comment.gsub!(/^\s*#/, '')
        strip_leading_whitespace(comment)
      end

      # @param [String] text
      # @return [String]
      def strip_leading_whitespace(text)
        Pry::Helpers::CommandHelpers.unindent(text)
      end
    end
  end
end