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Size: 1.5 KB
Versions: 11
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Stored size: 1.5 KB
Contents
# encoding: UTF-8
# Copyright 2012 Twitter, Inc
# http://www.apache.org/licenses/LICENSE-2.0
module TwitterCldr
module Tokenizers
class RbnfTokenizer
def tokenize(pattern)
PatternTokenizer.new(nil, tokenizer).tokenize(pattern)
end
private
def tokenizer
@tokenizer ||= begin
recognizers = [
# special rule descriptors
TokenRecognizer.new(:negative, /-x/),
TokenRecognizer.new(:improper_fraction, /x\.x/),
TokenRecognizer.new(:proper_fraction, /0\.x/),
TokenRecognizer.new(:master, /x\.0/),
# normal rule descriptors
TokenRecognizer.new(:equals, /=/),
TokenRecognizer.new(:rule, /%%?[[:word:]-]+/), # i.e. %spellout-numbering, %%2d-year
TokenRecognizer.new(:right_arrow, />/),
TokenRecognizer.new(:left_arrow, /</),
TokenRecognizer.new(:open_bracket, /\[/),
TokenRecognizer.new(:close_bracket, /\]/),
TokenRecognizer.new(:decimal, /[0#][0#,\.]+/),
TokenRecognizer.new(:plural, /\$\(.*\)\$/),
# ending
TokenRecognizer.new(:semicolon, /;/),
]
splitter_source = recognizers.map { |r| r.regex.source }.join("|")
splitter = Regexp.new("(#{splitter_source})")
Tokenizer.new(
recognizers + [
TokenRecognizer.new(:plaintext, //) # catch-all
], splitter
)
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems