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Contents
# encoding: UTF-8
# Copyright 2012 Twitter, Inc
# http://www.apache.org/licenses/LICENSE-2.0
module TwitterCldr
module Transforms
module Filters
class RegexFilter < FilterRule
class << self
def parse(rule_text, symbol_table)
rule_text = Rule.remove_comment(rule_text)
rule_text = rule_text[2..-2].strip
direction = direction_for(rule_text)
str = TwitterCldr::Shared::UnicodeRegex.compile(
clean_rule(rule_text, direction)
).to_regexp_str
new(/#{str}/, direction)
end
def accepts?(rule_text)
!!(rule_text =~ /\A::[\s]*\(?[\s]*\[/)
end
private
def direction_for(rule_text)
if rule_text.start_with?('(')
:backward
else
:forward
end
end
def clean_rule(rule_text, direction)
if direction == :backward
rule_text[1..-2].strip
else
rule_text
end
end
end
attr_reader :regexp, :direction
def initialize(regexp, direction)
@regexp = regexp
@direction = direction
end
def resolve(symbol_table)
self
end
def matches?(cursor)
idx = cursor.text.index(regexp, cursor.position)
idx == cursor.position
end
def forward?
direction == :forward
end
def backward?
direction == :backward
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems