Module: Arachni::Mixins::Observable

Includes:
Utilities
Included in:
Framework, HTTP
Defined in:
lib/arachni/mixins/observable.rb

Overview

Provides a flexible way to make any Class observable via callbacks/hooks using simple dynamic programming with the help of “method_missing()”.

The observable classes (those which include this module) use:

* call_<hookname>( *args )

to call specific hooks.

The observers set hooks using:

* observer_instance.add_<hookname>( &block )
* observer_instance.on_<hookname>( &block )

Author:

Instance Method Summary collapse

Methods included from Utilities

#cookie_encode, #cookies_from_document, #cookies_from_file, #cookies_from_response, #exception_jail, #exclude_path?, #extract_domain, #form_decode, #form_encode, #form_parse_request_body, #forms_from_document, #forms_from_response, #get_path, #hash_keys_to_str, #html_decode, #html_encode, #include_path?, #links_from_document, #links_from_response, #normalize_url, #page_from_response, #page_from_url, #parse_query, #parse_set_cookie, #parse_url_vars, #path_in_domain?, #path_too_deep?, #remove_constants, #seed, #skip_path?, #to_absolute, #uri_decode, #uri_encode, #uri_parse, #uri_parser, #url_sanitize

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args, &block) ⇒ Object 



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# File 'lib/arachni/mixins/observable.rb', line 41

def method_missing( sym, *args, &block )
    # grab the action (add/call) and the hook name
    action, hook = sym.to_s.split( '_', 2 )

    @__hooks       ||= {}
    @__hooks[hook] ||= []

    if action && hook
        case action
            when 'add', 'on'
                add_block( hook, &block )
                return

             when 'call'
                call_blocks( hook, args )
                return
        end
    end

    fail NoMethodError.new( "Undefined method '#{sym.to_s}'.", sym, args )
end