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module CodeRay
module Encoders
# = Debug Encoder
#
# Fast encoder producing simple debug output.
#
# It is readable and diff-able and is used for testing.
#
# You cannot fully restore the tokens information from the
# output, because consecutive :space tokens are merged.
# Use Tokens#dump for caching purposes.
#
# See also: Scanners::Debug
class Debug < Encoder
register_for :debug
FILE_EXTENSION = 'raydebug'
def initialize options = {}
super
@opened = []
end
def text_token text, kind
raise 'empty token' if $CODERAY_DEBUG && text.empty?
if kind == :space
@out << text
else
# TODO: Escape (
text = text.gsub(/[)\\]/, '\\\\\0') if text.index(/[)\\]/)
@out << kind.to_s << '(' << text << ')'
end
end
def begin_group kind
@opened << kind
@out << kind.to_s << '<'
end
def end_group kind
if @opened.last != kind
puts @out
raise "we are inside #{@opened.inspect}, not #{kind}"
end
@opened.pop
@out << '>'
end
def begin_line kind
@out << kind.to_s << '['
end
def end_line kind
@out << ']'
end
end
end
end
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