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module CodeRay
module Encoders
# Counts the LoC (Lines of Code). Returns an Integer >= 0.
#
# Everything that is not comment, markup, doctype/shebang, or an empty line,
# is considered to be code.
#
# For example,
# * HTML files not containing JavaScript have 0 LoC
# * in a Java class without comments, LoC is the number of non-empty lines
#
# A Scanner class should define the token kinds that are not code in the
# KINDS_NOT_LOC constant.
class LinesOfCode < Encoder
register_for :lines_of_code
NON_EMPTY_LINE = /^\s*\S.*$/
def compile tokens, options
kinds_not_loc = tokens.scanner.class::KINDS_NOT_LOC
code = tokens.token_class_filter :exclude => kinds_not_loc
@loc = code.text.scan(NON_EMPTY_LINE).size
end
def finish options
@loc
end
end
end
end
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