Method: ElasticAPM::Util::Inflector#safe_constantize

Defined in:
lib/elastic_apm/util/inflector.rb

#safe_constantize(camel_cased_word) ⇒ Object

Tries to find a constant with the name specified in the argument string.

safe_constantize('Module')   # => Module
safe_constantize('Foo::Bar') # => Foo::Bar

The name is assumed to be the one of a top-level constant, no matter whether it starts with “::” or not. No lexical context is taken into account:

C = 'outside'
module M
  C = 'inside'
  C                     # => 'inside'
  safe_constantize('C') # => 'outside', same as ::C
end

nil is returned when the name is not in CamelCase or the constant (or part of it) is unknown.

safe_constantize('blargle')                  # => nil
safe_constantize('UnknownModule')            # => nil
safe_constantize('UnknownModule::Foo::Bar')  # => nil



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# File 'lib/elastic_apm/util/inflector.rb', line 99

def safe_constantize(camel_cased_word)
  constantize(camel_cased_word)
rescue NameError => e
  raise if e.name && !(camel_cased_word.to_s.split("::").include?(e.name.to_s) ||
                       e.name.to_s == camel_cased_word.to_s)
rescue ArgumentError => e
  raise unless /not missing constant #{const_regexp(camel_cased_word)}!$/.match(e.message)
end