Class: Opal::Nodes::ConstNode

Inherits:
Base
  • Object
show all
Defined in:
opal/lib/opal/nodes/constants.rb

Instance Attribute Summary

Attributes inherited from Base

#compiler, #type

Instance Method Summary collapse

Methods inherited from Base

#add_gvar, #add_ivar, #add_local, #add_temp, #children, children, #class_variable_owner, #class_variable_owner_nesting_level, #comments, #compile_to_fragments, #error, #expr, #expr?, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #stmt, #stmt?, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Helpers

#conditional_send, #current_indent, #empty_line, #indent, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #mid_to_jsid, #property, #valid_name?

Constructor Details

This class inherits a constructor from Opal::Nodes::Base

Instance Method Details

#compileObject


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# File 'opal/lib/opal/nodes/constants.rb', line 12

def compile
  if magical_data_const?
    push('$__END__')
  elsif const_scope
    push '$$$(', recv(const_scope), ", '#{name}')"
  elsif compiler.eval?
    push "$$($nesting, '#{name}')"
  else
    push "$$($nesting, '#{name}')"
  end
end

#magical_data_const?Boolean

Ruby has a magical const DATA that should be processed in a different way:

  1. When current file contains END in the end of the file DATA const should be resolved to the string located after END
  2. When current file doesn't have END section DATA const should be resolved to a regular ::DATA constant

Returns:

  • (Boolean)

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# File 'opal/lib/opal/nodes/constants.rb', line 30

def magical_data_const?
  const_scope.nil? && name == :DATA && compiler.eof_content
end