Class: VER::View::List::Methods
- Inherits:
-
VER::View::List
- Object
- Struct
- VER::View::List
- VER::View::List::Methods
- Defined in:
- lib/ver/view/list/methods.rb
Overview
Show methods based on patterns.
TODO: Handle C and evaled methods.
Once 1.9.2 is out, use Method#parameters.
Instance Attribute Summary
Attributes inherited from VER::View::List
#callback, #entry, #frame, #list, #parent, #tag
Instance Method Summary collapse
- #insert_choice(choice) ⇒ Object
- #methods_of(namespace, seen = [], &block) ⇒ Object
- #pick_action(entry) ⇒ Object
- #update ⇒ Object
-
#update_choices ⇒ Object
Intelligent method grepper, tries to find matching methods for a wide range of input, by distributing scores.
Methods inherited from VER::View::List
#cancel, #completion, #destroy, #initialize, #line_down, #line_up, #message, #on_update, #pick, #pick_first, #pick_selection, #quit, #select_index, #setup_events, #setup_keymap, #setup_widgets, #sublist
Constructor Details
This class inherits a constructor from VER::View::List
Instance Method Details
#insert_choice(choice) ⇒ Object
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# File 'lib/ver/view/list/methods.rb', line 35 def insert_choice(choice) method, score = choice.values_at(:method, :score) owner, name = method.owner, method.name list.insert :end, " #{score} #{owner}.#{name}" return owner, name, parameters = method.owner, method.name, method.parameters params = [] method.parameters.each do |param| case param.first when :req params << param.last when :opt params << "?#{param.last}" when :block params << "&#{param.last}" end end params = params.join(', ') list.insert :end, " #{score} #{owner}.#{name}(#{params})" end |
#methods_of(namespace, seen = [], &block) ⇒ Object
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# File 'lib/ver/view/list/methods.rb', line 134 def methods_of(namespace, seen = [], &block) return if seen.include?(namespace) seen << namespace if namespace.respond_to?(:instance_methods) namespace.instance_methods(false).each do |name| yield namespace, namespace.instance_method(name) end end if namespace.respond_to?(:singleton_methods) namespace.singleton_methods(false).each do |name| yield namespace, namespace.method(name) end end if namespace.respond_to?(:constants) namespace.constants.each do |name| methods_of(namespace.const_get(name), seen, &block) end end nil end |
#pick_action(entry) ⇒ Object
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# File 'lib/ver/view/list/methods.rb', line 16 def pick_action(entry) index = list.curselection.first choice = @choices[index] return unless method = choice[:method] if location = method.source_location filename, line = location if ::File.file?(filename) callback.call(filename, line) else # defined by clumsy eval end else # C method? end end |
#update ⇒ Object
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# File 'lib/ver/view/list/methods.rb', line 9 def update list.value = update_choices.map{|choice| method, score = choice.values_at(:method, :score) " #{score} #{method.owner}.#{method.name}" } end |
#update_choices ⇒ Object
Intelligent method grepper, tries to find matching methods for a wide range of input, by distributing scores.
Possible input might be:
Window.y
Window y
Window::y
Window#y
VER y
VER::View::File#copy
VER::View::File.copy
VER::View::File::copy
The matching is very tolerant, so you can search for methods in completely different namespaces but still get good results:
VER.delta
# => VER::Buffer.apply_delta
# => VER::Buffer.apply_deltas
# => VER::Cursor.delta
sort
# => VER::Cursor.boundary_sort
VER.ask
# => #<Class:VER>.ask
# => VER::View::File::Methods.buffer_ask
# => VER::View::File::Methods.execute_ask
# => VER::View::File::Methods.execute_ask_context
# => VER::View::File::Methods.filter_selection_ask
# => VER::View::File::Methods.goto_line_ask
# => #<Class:FFI::NCurses>.mousemask
# => VER::View::File::Methods.save_as_ask
# => VER::View::File::Methods.search_ask
# => VER::View::File::Methods.search_ask_context
We are only using string comparisions to find matches, so input is never interpreted as a regular expression and can include anything without having to worry about special meaning within a regexp.
There are some improvments possible (as usual). In particular the scoring should become more accurate for short methods, for example making adjustments when a method starts or ends with the search string.
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# File 'lib/ver/view/list/methods.rb', line 107 def update_choices @choices = [] needle = entry.value.split(/::|[#.\s]+/) owner = needle.join('::') name = needle.last.to_s methods_of VER do |namespace, method| mnamespace = namespace.to_s mowner, mname = method.owner.to_s, method.name.to_s smowner = mowner.split('::') score = 0 score += (needle & smowner).size if mname.include?(name) distance = Levenshtein.distance(mname, name) score += ([mname, name].max_by{|n| n.size }.size - distance) end next if score == 0 @choices << {namespace: namespace, method: method, score: score} end @choices = @choices.sort_by{|hash| [-hash[:score], hash[:method].name] } end |