Class: Opal::Nodes::RescueNode
- Defined in:
- opal/lib/opal/nodes/rescue.rb
Instance Attribute Summary
Attributes inherited from Base
Attributes included from Closure::NodeSupport
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.
- #has_retry? ⇒ Boolean
- #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_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 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
#body_code ⇒ Object
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# File 'opal/lib/opal/nodes/rescue.rb', line 171 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 97 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 $no_errors = true;' end closure_type = Closure::NONE closure_type |= Closure::JS_FUNCTION if expr? || recv? if has_retry? closure_type |= Closure::JS_LOOP \ | Closure::JS_LOOP_INSIDE \ | Closure::RESCUE_RETRIER end push_closure(closure_type) if closure_type != Closure::NONE in_rescue(self) do push 'try {' indent do line stmt(body_code) end line '} catch ($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 end pop_closure if closure_type != Closure::NONE wrap 'do { ', ' break; } while(1)' if has_retry? # Wrap a try{} catch{} into a function # when it's an expression # or when there's a method call after begin;rescue;end if expr? || recv? if scope.await_encountered wrap '(await (async function() { ', '})())' else wrap '(function() { ', '})()' end end end |
#handle_rescue_else_manually? ⇒ Boolean
Returns true when there's no 'ensure' statement wrapping current rescue.
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# File 'opal/lib/opal/nodes/rescue.rb', line 186 def handle_rescue_else_manually? !in_ensure? && has_rescue_else? end |
#has_retry? ⇒ Boolean
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# File 'opal/lib/opal/nodes/rescue.rb', line 190 def has_retry? @sexp.[:has_retry] end |
#rescue_else_code ⇒ Object
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# File 'opal/lib/opal/nodes/rescue.rb', line 177 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 |