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($:.unshift '../..'; require 'coderay') unless defined? CodeRay
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
public
def text_token text, kind
if kind == :space
@out << text
else
text = text.gsub(/[)\\]/, '\\\\\0') # escape ) and \
@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
if $0 == __FILE__
$VERBOSE = true
$: << File.join(File.dirname(__FILE__), '..')
eval DATA.read, nil, $0, __LINE__ + 4
end
__END__
require 'test/unit'
class DebugEncoderTest < Test::Unit::TestCase
def test_creation
assert CodeRay::Encoders::Debug < CodeRay::Encoders::Encoder
debug = nil
assert_nothing_raised do
debug = CodeRay.encoder :debug
end
assert_kind_of CodeRay::Encoders::Encoder, debug
end
TEST_INPUT = CodeRay::Tokens[
['10', :integer],
['(\\)', :operator],
[:begin_group, :string],
['test', :content],
[:end_group, :string],
[:begin_line, :test],
["\n", :space],
["\n \t", :space],
[" \n", :space],
["[]", :method],
[:end_line, :test],
].flatten
TEST_OUTPUT = <<-'DEBUG'.chomp
integer(10)operator((\\\))string<content(test)>test[
method([])]
DEBUG
def test_filtering_text_tokens
assert_equal TEST_OUTPUT, CodeRay::Encoders::Debug.new.encode_tokens(TEST_INPUT)
assert_equal TEST_OUTPUT, TEST_INPUT.debug
end
end
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