Class: Opal::Nodes::ConstNode
- Defined in:
- opal/lib/opal/nodes/constants.rb
Constant Summary collapse
- OPTIMIZED_ACCESS_CONSTS =
%i[ BasicObject Object Module Class Opal Kernel NilClass ].freeze
Instance Attribute Summary
Attributes inherited from Base
Attributes included from Opal::Nodes::Closure::NodeSupport
Instance Method Summary collapse
- #compile ⇒ Object
-
#magical_data_const? ⇒ Boolean
Ruby has a magical const DATA that should be processed in a different way: 1.
-
#optimized_access? ⇒ Boolean
For a certain case of calls like
::Opal.coerce_to?
we can optimize the calls.
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_empty, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_resbody, #in_resbody?, #in_rescue, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #source_location, #stmt, #stmt?, #top_scope, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap
Methods included from Opal::Nodes::Closure::NodeSupport
#closure_is?, #compile_catcher, #generate_thrower, #generate_thrower_without_catcher, #in_closure, #pop_closure, #push_closure, #select_closure, #thrower
Methods included from Helpers
#current_indent, #empty_line, #indent, #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
#compile ⇒ Object
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# File 'opal/lib/opal/nodes/constants.rb', line 12 def compile if magical_data_const? push('$__END__') elsif optimized_access? helper :"#{name}" push "$#{name}" elsif const_scope == s(:cbase) push "#{top_scope.absolute_const}('#{name}')" elsif const_scope push "#{top_scope.absolute_const}(", recv(const_scope), ", '#{name}')" elsif compiler.eval? push "#{scope.relative_access}('#{name}')" else push "#{scope.relative_access}('#{name}')" end end |
#magical_data_const? ⇒ Boolean
Ruby has a magical const DATA that should be processed in a different way:
- When current file contains END in the end of the file DATA const should be resolved to the string located after END
- When current file doesn't have END section DATA const should be resolved to a regular ::DATA constant
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# File 'opal/lib/opal/nodes/constants.rb', line 35 def magical_data_const? const_scope.nil? && name == :DATA && compiler.eof_content end |
#optimized_access? ⇒ Boolean
For a certain case of calls like ::Opal.coerce_to?
we can
optimize the calls. We can be sure they are defined from the
beginning.
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# File 'opal/lib/opal/nodes/constants.rb', line 46 def optimized_access? const_scope == s(:cbase) && OPTIMIZED_ACCESS_CONSTS.include?(name) end |