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Contents
require 'cucumber/cucumber_expressions/group_builder'
module Cucumber
module CucumberExpressions
class TreeRegexp
attr_reader :regexp, :group_builder
def initialize(regexp)
@regexp = regexp.is_a?(Regexp) ? regexp : Regexp.new(regexp)
stack = [GroupBuilder.new]
group_start_stack = []
last = nil
non_capturing_maybe = false
@regexp.source.split('').each_with_index do |c, n|
if c == '(' && last != '\\'
stack.push(GroupBuilder.new)
group_start_stack.push(n+1)
non_capturing_maybe = false
elsif c == ')' && last != '\\'
gb = stack.pop
group_start = group_start_stack.pop
if gb.capturing?
gb.source = @regexp.source[group_start...n]
stack.last.add(gb)
else
gb.move_children_to(stack.last)
end
non_capturing_maybe = false
elsif c == '?' && last == '('
non_capturing_maybe = true
elsif c == ':' && non_capturing_maybe
stack.last.set_non_capturing!
non_capturing_maybe = false
end
last = c
end
@group_builder = stack.pop
end
def match(s)
match = @regexp.match(s)
return nil if match.nil?
group_indices = (0..match.length).to_a.to_enum
@group_builder.build(match, group_indices)
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems