class RSpec::Core::Formatters::SyntaxHighlighter

def self.attempt_to_add_rspec_terms_to_coderay_keywords
  CodeRay::Scanners::Ruby::Patterns::IDENT_KIND.add(%w[
    describe context
    it specify
    before after around
    let subject
    expect allow
  ], :keyword)
rescue Exception
  # Mutating CodeRay's contants like this is not a public API
  # and might not always work. If we cannot add our keywords
  # to CodeRay it is not a big deal and not worth raising an
  # error over, so we ignore it.
end

def color_enabled_implementation
  @color_enabled_implementation ||= begin
    require 'coderay'
    self.class.attempt_to_add_rspec_terms_to_coderay_keywords
    CodeRayImplementation
  rescue LoadError
    NoSyntaxHighlightingImplementation
  end
end

def highlight(lines)
  implementation.highlight_syntax(lines)
end

def implementation
  WindowsImplementation
end

def implementation
  return color_enabled_implementation if @configuration.color_enabled?
  NoSyntaxHighlightingImplementation
end

def initialize(configuration)
  @configuration = configuration
end