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require 'gherkin/native'
require 'gherkin/formatter/model'
module Gherkin
module Listener
# Adapter from the "raw" Gherkin <tt>Listener</tt> API
# to the slightly more high-level <tt>Formatter</tt> API,
# which is easier to implement (less state to keep track of).
class FormatterListener
native_impl('gherkin')
def initialize(formatter)
@formatter = formatter
@stash = Stash.new
end
def comment(value, line)
@stash.comment Formatter::Model::Comment.new(value, line)
end
def tag(name, line)
@stash.tag Formatter::Model::Tag.new(name, line)
end
def feature(keyword, name, description, line)
@stash.feature(name) do |comments, tags, id|
replay Formatter::Model::Feature.new(comments, tags, keyword, name, description, line, id)
end
end
def background(keyword, name, description, line)
@stash.feature_element(name) do |comments, tags, id|
replay Formatter::Model::Background.new(comments, keyword, name, description, line)
end
end
def scenario(keyword, name, description, line)
replay_step_or_examples
@stash.feature_element(name) do |comments, tags, id|
replay Formatter::Model::Scenario.new(comments, tags, keyword, name, description, line, id)
end
end
def scenario_outline(keyword, name, description, line)
replay_step_or_examples
@stash.feature_element(name) do |comments, tags, id|
replay Formatter::Model::ScenarioOutline.new(comments, tags, keyword, name, description, line, id)
end
end
def examples(keyword, name, description, line)
replay_step_or_examples
@stash.examples(name) do |comments, tags, id|
@current_builder = Formatter::Model::Examples::Builder.new(comments, tags, keyword, name, description, line, id)
end
end
def step(keyword, name, line)
replay_step_or_examples
@stash.basic_statement do |comments, id|
@current_builder = Formatter::Model::Step::Builder.new(comments, keyword, name, line)
end
end
def row(cells, line)
@stash.basic_statement do |comments, id|
@current_builder.row(comments, cells, line, id)
end
end
def doc_string(content_type, value, line)
@current_builder.doc_string(value, content_type, line)
end
def eof
replay_step_or_examples
@formatter.eof
end
def syntax_error(state, ev, legal_events, uri, line)
@formatter.syntax_error(state, ev, legal_events, uri, line)
end
private
def replay(element)
element.replay(@formatter)
end
class Stash
attr_reader :comments, :tags, :ids
def initialize
@comments, @tags, @ids = [], [], []
@row_index = 0
end
def comment(comment)
@comments << comment
end
def feature(name)
@feature_id = id(name)
yield @comments, @tags, @feature_id
@comments, @tags = [], []
end
def feature_element(name)
@feature_element_id = "#{@feature_id};#{id(name)}"
yield @comments, @tags, @feature_element_id
@comments, @tags = [], []
end
def examples(name)
@examples_id = "#{@feature_element_id};#{id(name)}"
@row_index = 0
yield @comments, @tags, @examples_id
@comments, @tags = [], []
end
def basic_statement
@row_index += 1
yield @comments, "#{@examples_id};#{@row_index}"
@comments = []
end
def tag(tag)
@tags << tag
end
def id(name)
(name || '').gsub(/[\s_]/, '-').downcase
end
end
def replay_step_or_examples
return unless @current_builder
replay(@current_builder)
@current_builder = nil
end
end
end
end
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