Class: Opal::Rewriters::OpalEngineCheck

Inherits:
Base
  • Object
show all
Defined in:
opal/lib/opal/rewriters/opal_engine_check.rb

Constant Summary

RUBY_ENGINE_CHECK = 
s(:send, s(:const, nil, :RUBY_ENGINE),
:==, s(:str, "opal"))
RUBY_ENGINE_CHECK_NOT = 
s(:send, s(:const, nil, :RUBY_ENGINE),
:!=, s(:str, "opal"))
RUBY_PLATFORM_CHECK = 
s(:send, s(:const, nil, :RUBY_PLATFORM),
:==, s(:str, "opal"))
RUBY_PLATFORM_CHECK_NOT = 
s(:send, s(:const, nil, :RUBY_PLATFORM),
:!=, s(:str, "opal"))

Constants inherited from Base

Base::DUMMY_LOCATION

Instance Attribute Summary

Attributes inherited from Base

#current_node

Instance Method Summary collapse

Methods inherited from Base

#append_to_body, #prepend_to_body, #process, #s, s

Instance Method Details

#on_if(node) ⇒ Object 



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# File 'opal/lib/opal/rewriters/opal_engine_check.rb', line 7

def on_if(node)
  test, true_body, false_body = *node.children

  if skip_check_present?(test)
    false_body = s(:nil)
  end

  if skip_check_present_not?(test)
    true_body = s(:nil)
  end

  node.updated(nil, process_all([test, true_body, false_body]))
end

#skip_check_present?(test) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/rewriters/opal_engine_check.rb', line 21

def skip_check_present?(test)
  test == RUBY_ENGINE_CHECK or test == RUBY_PLATFORM_CHECK
end

#skip_check_present_not?(test) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/rewriters/opal_engine_check.rb', line 25

def skip_check_present_not?(test)
  test == RUBY_ENGINE_CHECK_NOT or test == RUBY_PLATFORM_CHECK_NOT
end