Class: Opal::Nodes::ResBodyNode

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

Instance Attribute Summary

Attributes inherited from Base

#compiler, #sexp, #type

Attributes included from Closure::NodeSupport

#closure

Instance Method Summary collapse

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

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/rescue.rb', line 200

def compile
  push 'if (Opal.rescue($err, ', expr(klasses), ')) {'
  indent do
    if lvar
      push expr(lvar.updated(nil, [*lvar.children, s(:js_tmp, '$err')]))
    end

    # Need to ensure we clear the current exception out after the rescue block ends
    line 'try {'
    indent do
      in_resbody do
        line stmt(rescue_body)
      end
    end
    line '} finally { Opal.pop_exception($err); }'
  end
  line '}'
end

#klasses ⇒ Object 



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# File 'opal/lib/opal/nodes/rescue.rb', line 219

def klasses
  klasses_sexp || s(:array, s(:const, nil, :StandardError))
end

#rescue_body ⇒ Object 



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# File 'opal/lib/opal/nodes/rescue.rb', line 223

def rescue_body
  body_code = (body || s(:nil))
  body_code = compiler.returns(body_code) unless stmt?
  body_code
end