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Contents
module CodeRay
module Scanners
load :html
load :ruby
# Scanner for HTML ERB templates.
class ERB < Scanner
register_for :erb
title 'HTML ERB Template'
KINDS_NOT_LOC = HTML::KINDS_NOT_LOC
ERB_RUBY_BLOCK = /
(<%(?!%)[-=\#]?)
((?>
[^\-%]* # normal*
(?> # special
(?: %(?!>) | -(?!%>) )
[^\-%]* # normal*
)*
))
((?: -?%> )?)
/x # :nodoc:
START_OF_ERB = /
<%(?!%)
/x # :nodoc:
protected
def setup
@ruby_scanner = CodeRay.scanner :ruby, :tokens => @tokens, :keep_tokens => true
@html_scanner = CodeRay.scanner :html, :tokens => @tokens, :keep_tokens => true, :keep_state => true
end
def reset_instance
super
@html_scanner.reset
end
def scan_tokens encoder, options
until eos?
if (match = scan_until(/(?=#{START_OF_ERB})/o) || scan_rest) and not match.empty?
@html_scanner.tokenize match, :tokens => encoder
elsif match = scan(/#{ERB_RUBY_BLOCK}/o)
start_tag = self[1]
code = self[2]
end_tag = self[3]
encoder.begin_group :inline
encoder.text_token start_tag, :inline_delimiter
if start_tag == '<%#'
encoder.text_token code, :comment
else
@ruby_scanner.tokenize code, :tokens => encoder
end unless code.empty?
encoder.text_token end_tag, :inline_delimiter unless end_tag.empty?
encoder.end_group :inline
else
raise_inspect 'else-case reached!', encoder
end
end
encoder
end
end
end
end
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