Class: Opal::Nodes::RescueNode

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

Constant Summary

Constants included from Helpers

Helpers::BASIC_IDENTIFIER_RULES, Helpers::ES3_RESERVED_WORD_EXCLUSIVE, Helpers::ES51_RESERVED_WORD, Helpers::IMMUTABLE_PROPS, Helpers::PROTO_SPECIAL_METHODS, Helpers::PROTO_SPECIAL_PROPS

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, #compile_to_fragments, #error, #expr, #expr?, #expr_or_nil, #fragment, handle, handlers, #helper, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #stmt, #stmt?, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Helpers

#current_indent, #empty_line, #indent, #ivar, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #lvar_to_js, #mid_to_jsid, #property, #valid_ivar_name?, #valid_name?, #variable

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 82

def body_code
  body_code = (body.type == :resbody ? s(:nil) : body)

  if !stmt?
    compiler.returns body_code
  else
    body_code
  end
end

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/rescue.rb', line 58

def compile
  handled_else = false

  push "try {"
  line(indent { process(body_code, @level) })
  line "} catch ($err) {"

  children[1..-1].each_with_index do |child, idx|
    handled_else = true unless child.type == :resbody

    push "else " unless idx == 0
    push(indent { process(child, @level) })
  end

  # if no resbodys capture our error, then rethrow
  unless handled_else
    push "else { throw $err; }"
  end

  line "}"

  wrap '(function() { ', '})()' if expr?
end