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module Concurrent
module Utility
# @!visibility private
module EngineDetector
def on_jruby?
ruby_engine == 'jruby'
end
def on_jruby_9000?
on_jruby? && ruby_version(:>=, 9, 0, 0, JRUBY_VERSION)
end
def on_cruby?
ruby_engine == 'ruby'
end
def on_rbx?
ruby_engine == 'rbx'
end
def on_truffle?
ruby_engine == 'jruby+truffle'
end
def on_windows?
!(RbConfig::CONFIG['host_os'] =~ /mswin|mingw|cygwin/).nil?
end
def on_osx?
!(RbConfig::CONFIG['host_os'] =~ /darwin|mac os/).nil?
end
def on_linux?
!(RbConfig::CONFIG['host_os'] =~ /linux/).nil?
end
def ruby_engine
defined?(RUBY_ENGINE) ? RUBY_ENGINE : 'ruby'
end
def ruby_version(comparison, major, minor, patch, version = RUBY_VERSION)
result = (version.split('.').map(&:to_i) <=> [major, minor, patch])
comparisons = { :== => [0],
:>= => [1, 0],
:<= => [-1, 0],
:> => [1],
:< => [-1] }
comparisons.fetch(comparison).include? result
end
end
end
# @!visibility private
extend Utility::EngineDetector
end
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