Class: Ruvi::Completion::WordCompleter

Inherits:
Object
  • Object
show all
Defined in:
lib/plugins/completion.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ WordCompleter

Returns a new instance of WordCompleter.



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# File 'lib/plugins/completion.rb', line 27

def initialize app
    @app = app
    @app.add_insert_binding("\C-n") { do_completion }
    @app.change_listeners << self.method(:notify_of_change)
    @changes = []
    @buffer_blub = {}
end

Instance Method Details

#add_word_list(buffer, word_list, diff) ⇒ Object 



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# File 'lib/plugins/completion.rb', line 49

def add_word_list buffer, word_list, diff
    word_list.each {
        |word|
        @buffer_blub[buffer][word] += diff
    }
end

#do_completion ⇒ Object 



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# File 'lib/plugins/completion.rb', line 89

def do_completion
    buffer = @app.current_buffer
    process_changes buffer
    word_list = process_line buffer, buffer.lines[buffer.y], buffer.y
    curx = 0
    token = word_list.find { 
                |tok| 
                a = (tok == word_list.last) || (curx > buffer.x)
                curx += tok.length
                a
            }
    possibles = @buffer_blub[buffer].keys
    possibles.delete token
    options = possibles.find_all { |possible| possible.index(token) == 0 or token.empty? }
    sorted_options = options.sort_by { |val| -@buffer_blub[buffer][val] }
    if sorted_options.empty?
        @app.status_bar_edit_line "Sorry, no completion found!"
        return
    end
    to_insert = sorted_options.first.slice(token.length..-1)
    EditorApp::DiffLogger::ModifyLineChange.new(buffer, buffer.y) {
        buffer.lines[buffer.y][buffer.ax, 0] = to_insert
        EditorApp.invalidate_buffer_line buffer, buffer.y
    }
    ecm = @app.end_char_mode
    buffer.x += to_insert.length
    @app.end_char_mode = ecm
end

#notify_of_change(change, direction) ⇒ Object 



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# File 'lib/plugins/completion.rb', line 34

def notify_of_change change, direction
    @changes << [change, direction]
end

#process_changes(buffer) ⇒ Object 



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# File 'lib/plugins/completion.rb', line 55

def process_changes buffer
    if !(@buffer_blub.has_key? buffer)
        @buffer_blub[buffer] = Hash.new { 0 }
        (0...buffer.lines.length).each {
            |num|
            word_list = process_line buffer, buffer.lines[num], num
            add_word_list buffer, word_list, 1
        }
    else
        @buffer_blub[buffer] = Hash.new { 0 }
        @changes.each {
            |mod_with_direction|
            change, direction = *mod_with_direction
            sign = direction ? 1 : -1
            case change
            when EditorApp::DiffLogger::InsertLineAfterChange
                word_list = process_line buffer, change.new_line_data, change.line_num
                add_word_list buffer, word_list, sign * 1
            when EditorApp::DiffLogger::RemoveLineChange
                word_list = process_line buffer, change.old_line_data, change.line_num
                add_word_list buffer, word_list, sign * -1
            when EditorApp::DiffLogger::ModifyLineChange 
                word_list = process_line buffer, change.old_line_data, change.line_num
                add_word_list buffer, word_list, sign * -1
                word_list = process_line buffer, change.new_line_data, change.line_num
                add_word_list buffer, word_list, sign * 1
            else
                raise "unhandled change type!! #{change.type}"
            end
        }
        @app.status_bar_edit_line "would process completion! got #{@changes.length} changes!"
        @changes = []
    end
end

#process_line(buffer, line, num) ⇒ Object 



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# File 'lib/plugins/completion.rb', line 37

def process_line buffer, line, num
    word_list = []
    buffer.iterate_line_highlight(num, line) {
        |k|
        if buffer.highlighter.is_a? PlainTextHighlighter
            word_list += line.split(/([,| ])/)
        else
            word_list << k
        end
    }
    word_list
end