Module: Monkey::Engine

Includes:
Rubinius
Defined in:
lib/monkey/engine.rb

Overview

Makes sure we always have RUBY_ENGINE, RUBY_ENGINE_VERSION and RUBY_DESCRIPTION TODO: Check IronRuby version detection.

Class Method Summary collapse

Class Method Details

.ironruby?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 10

def ironruby?; RUBY_ENGINE == "ironruby"; end

.jruby?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 7

def jruby?;    RUBY_ENGINE == "jruby";    end

.macruby?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 11

def macruby?;  RUBY_ENGINE == "macruby";  end

.maglev?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 12

def maglev?;   RUBY_ENGINE == "maglev";   end

.mri?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 8

def mri?;      RUBY_ENGINE == "ruby";     end

.rbx?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 9

def rbx?;      RUBY_ENGINE == "rbx";      end

.ree?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 16

def ree?
  !!(RUBY_DESCRIPTION =~ /Ruby Enterprise Edition/) || RUBY_ENGINE == "ree"
end

.rubinius?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 14

def rbx?;      RUBY_ENGINE == "rbx";      end

.ruby_core?Boolean

Returns:

  • (Boolean)

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# File 'lib/monkey/engine.rb', line 29

def ruby_core?
  maglev? or rubinius?
end

.ruby_engine(engine = RUBY_ENGINE, pretty = true) ⇒ Object


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# File 'lib/monkey/engine.rb', line 84

def ruby_engine(engine = RUBY_ENGINE, pretty = true)
  return engine unless pretty
  case engine
  when "ruby"   then ree? ? "Ruby Enterprise Edition" : "Ruby"
  when "ree"    then "Ruby Enterprise Edition"
  when "rbx"    then "Rubinius"
  when "maglev" then "MagLev"
  else engine.capitalize.gsub("ruby", "Ruby")
  end
end

.set_engine(engine, engine_version = nil) ⇒ Object


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# File 'lib/monkey/engine.rb', line 97

def self.set_engine(engine, engine_version = nil)
  Object.send :remove_const, "RUBY_ENGINE"
  Object.const_set "RUBY_ENGINE", engine
  if engine_version
    Object.send :remove_const, "RUBY_ENGINE_VERSION"
    Object.const_set "RUBY_ENGINE_VERSION", engine_version
  end
end

.use_original_ruby_engine(&block) ⇒ Object


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# File 'lib/monkey/engine.rb', line 130

def use_original_ruby_engine(&block)
  if defined? ::OLD_RUBY_ENGINE then with_ruby_engine(::OLD_RUBY_ENGINE, ::OLD_RUBY_ENGINE_VERSION, &block)
  else with_ruby_engine(::RUBY_ENGINE, ::RUBY_ENGINE_VERSION, &block)
  end
end

.use_real_ruby_engine(&block) ⇒ Object


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# File 'lib/monkey/engine.rb', line 124

def use_real_ruby_engine(&block)
  with_ruby_engine(::REAL_RUBY_ENGINE, ::REAL_RUBY_ENGINE_VERSION, &block)
end

.with_ruby_engine(engine, engine_version) ⇒ Object


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# File 'lib/monkey/engine.rb', line 106

def with_ruby_engine(engine, engine_version)
  engine_was, engine_version_was = ::RUBY_ENGINE, ::RUBY_ENGINE_VERSION
  unless defined? ::OLD_RUBY_ENGINE
    Object.const_set("OLD_RUBY_ENGINE", ::RUBY_ENGINE)
    Object.const_set("OLD_RUBY_ENGINE_VERSION", ::RUBY_ENGINE_VERSION)
  end
  Monkey::Engine.set_engine engine, engine_version
  if block_given?
    result = yield
    Monkey::Engine.set_engine engine_was, engine_version_was
    result
  else
    [engine_was, engine_version_was]
  end
end