Class: Opal::Nodes::ArityCheckNode
- Defined in:
- opal/lib/opal/nodes/args/arity_check.rb
Direct Known Subclasses
Instance Attribute Summary
Attributes inherited from Base
Attributes included from Closure::NodeSupport
Instance Method Summary collapse
- #all_args ⇒ Object
- #arity ⇒ Object
-
#arity_checks ⇒ Object
Returns an array of JS conditions for raising and argument error caused by arity check.
- #compile ⇒ Object
- #has_only_optional_kwargs? ⇒ Boolean
- #has_required_kwargs? ⇒ Boolean
-
#initialize ⇒ ArityCheckNode
constructor
A new instance of ArityCheckNode.
- #kwargs ⇒ Object
- #negative_arity ⇒ Object
- #positive_arity ⇒ Object
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? , #process , #push , #recv , #recv? , #s , #scope , #source_location , #stmt , #stmt? , #top_scope , truthy_optimize? , #unshift , #while_loop , #with_temp , #wrap
Methods included from 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
#initialize ⇒ ArityCheckNode
Returns a new instance of ArityCheckNode.
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 12 def initialize(*) super arguments = Rewriters ::Arguments .new (args_node.children) @args = arguments.args @optargs = arguments.optargs @restarg = arguments.restarg @postargs = arguments.postargs @kwargs = arguments.kwargs @kwoptargs = arguments.kwoptargs @kwrestarg = arguments.kwrestarg @kwnilarg = arguments.kwnilarg end
Instance Method Details
#all_args ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 44 def all_args @all_args ||= [*@args, *@optargs, @restarg, *@postargs, *kwargs].compact end
#arity ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 76 def arity if @restarg || @optargs.any? || has_only_optional_kwargs? negative_arity else positive_arity end end
#arity_checks ⇒ Object
Returns an array of JS conditions for raising and argument error caused by arity check
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 50 def arity_checks return @arity_checks if defined?(@arity_checks) arity = all_args.size arity -= @optargs.size arity -= 1 if @restarg arity -= kwargs.size arity = -arity - 1 if !@optargs.empty? || !kwargs.empty? || @restarg @arity_checks = [] if arity < 0 # splat or opt args min_arity = -(arity + 1) max_arity = all_args.size @arity_checks << "$arity < #{min_arity}" if min_arity > 0 @arity_checks << "$arity > #{max_arity}" unless @restarg else @arity_checks << "$arity !== #{arity}" end @arity_checks end
#compile ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 27 def compile scope.arity = arity return unless compiler.arity_check? unless arity_checks.empty? helper :ac meth = scope.mid.to_s.inspect line 'var $arity = arguments.length;' push " if (#{arity_checks.join(' || ')}) { $ac($arity, #{arity}, this, #{meth}); }" end end
#has_only_optional_kwargs? ⇒ Boolean
Returns:
- (Boolean)
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 109 def has_only_optional_kwargs? kwargs.any? && kwargs.all? { |arg| %i[kwoptargkwrestarg].include?(arg.type) } end
#has_required_kwargs? ⇒ Boolean
Returns:
- (Boolean)
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 113 def has_required_kwargs? kwargs.any? { |arg| arg.type == :kwarg } end
#kwargs ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 40 def kwargs [*@kwargs, *@kwoptargs, @kwrestarg].compact end
#negative_arity ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 84 def negative_arity required_plain_args = all_args.select do |arg| %i[argmlhs].include?(arg.type) end result = required_plain_args.size if has_required_kwargs? result += 1 end result = -result - 1 result end
#positive_arity ⇒ Object
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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 100 def positive_arity result = all_args.size result -= kwargs.size result += 1 if kwargs.any? result end