90 lines
2.3 KiB
Ruby
90 lines
2.3 KiB
Ruby
($:.unshift '../..'; require 'coderay') unless defined? CodeRay
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module CodeRay
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module Encoders
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# Counts the LoC (Lines of Code). Returns an Integer >= 0.
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#
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# Alias: :loc
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#
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# Everything that is not comment, markup, doctype/shebang, or an empty line,
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# is considered to be code.
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#
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# For example,
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# * HTML files not containing JavaScript have 0 LoC
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# * in a Java class without comments, LoC is the number of non-empty lines
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#
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# A Scanner class should define the token kinds that are not code in the
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# KINDS_NOT_LOC constant, which defaults to [:comment, :doctype].
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class LinesOfCode < Encoder
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register_for :lines_of_code
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NON_EMPTY_LINE = /^\s*\S.*$/
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def compile tokens, options
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if scanner = tokens.scanner
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kinds_not_loc = scanner.class::KINDS_NOT_LOC
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else
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warn ArgumentError, 'Tokens have no scanner.' if $VERBOSE
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kinds_not_loc = CodeRay::Scanners::Scanner::KINDS_NOT_LOC
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end
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code = tokens.token_class_filter :exclude => kinds_not_loc
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@loc = code.text.scan(NON_EMPTY_LINE).size
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end
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def finish options
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@loc
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end
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end
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end
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end
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if $0 == __FILE__
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$VERBOSE = true
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$: << File.join(File.dirname(__FILE__), '..')
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eval DATA.read, nil, $0, __LINE__ + 4
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end
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__END__
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require 'test/unit'
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class LinesOfCodeTest < Test::Unit::TestCase
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def test_creation
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assert CodeRay::Encoders::LinesOfCode < CodeRay::Encoders::Encoder
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filter = nil
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assert_nothing_raised do
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filter = CodeRay.encoder :loc
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end
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assert_kind_of CodeRay::Encoders::LinesOfCode, filter
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assert_nothing_raised do
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filter = CodeRay.encoder :lines_of_code
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end
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assert_kind_of CodeRay::Encoders::LinesOfCode, filter
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end
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def test_lines_of_code
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tokens = CodeRay.scan <<-RUBY, :ruby
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#!/usr/bin/env ruby
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# a minimal Ruby program
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puts "Hello world!"
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RUBY
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assert_equal 1, CodeRay::Encoders::LinesOfCode.new.encode_tokens(tokens)
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assert_equal 1, tokens.lines_of_code
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assert_equal 1, tokens.loc
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end
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def test_filtering_block_tokens
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tokens = CodeRay::Tokens.new
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tokens << ["Hello\n", :world]
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tokens << ["Hello\n", :space]
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tokens << ["Hello\n", :comment]
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assert_equal 2, CodeRay::Encoders::LinesOfCode.new.encode_tokens(tokens)
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assert_equal 2, tokens.lines_of_code
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assert_equal 2, tokens.loc
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end
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end |