Class: Opal::Nodes::RescueNode
- Defined in:
- opal/lib/opal/nodes/rescue.rb
Instance Attribute Summary
Attributes inherited from Base
Instance Method Summary collapse
- #body_code ⇒ Object
- #compile ⇒ Object
-
#handle_rescue_else_manually? ⇒ Boolean
Returns true when there's no 'ensure' statement wrapping current rescue.
- #rescue_else_code ⇒ 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_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
#body_code ⇒ Object
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# File 'opal/lib/opal/nodes/rescue.rb', line 136 def body_code body_code = (body.nil? || body.type == :resbody ? s(:nil) : body) body_code = compiler.returns(body_code) unless stmt? body_code end
#compile ⇒ Object
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# File 'opal/lib/opal/nodes/rescue.rb', line 83 def compile scope.rescue_else_sexp = children[1..-1].detect { |sexp| sexp && sexp.type != :resbody } _has_rescue_handlers = false if handle_rescue_else_manually? line 'var $no_errors = true;' end push 'try {' indent do line stmt(body_code) end line '} catch ($err) {' indent do if has_rescue_else? line '$no_errors = false;' end children[1..-1].each_with_index do |child, idx| # counting only rescue, ignoring rescue-else statement next unless child && child.type == :resbody _has_rescue_handlers = true push ' else ' unless idx == 0 line process(child, @level) end # if no resbodys capture our error, then rethrow push ' else { throw $err; }' end line '}' if handle_rescue_else_manually? # here we must add 'finally' explicitly push 'finally {' indent do line 'if ($no_errors) { ' indent do line stmt(rescue_else_code) end line '}' end push '}' end # Wrap a try{} catch{} into a function # when it's an expression # or when there's a method call after begin;rescue;end wrap '(function() { ', '})()' if expr? || recv? end
#handle_rescue_else_manually? ⇒ Boolean
Returns true when there's no 'ensure' statement wrapping current rescue.
Returns:
- (Boolean)
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# File 'opal/lib/opal/nodes/rescue.rb', line 151 def handle_rescue_else_manually? !scope.in_ensure? && scope.has_rescue_else? end
#rescue_else_code ⇒ Object
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# File 'opal/lib/opal/nodes/rescue.rb', line 142 def rescue_else_code rescue_else_code = scope.rescue_else_sexp rescue_else_code = compiler.returns(rescue_else_code) unless stmt? rescue_else_code end