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|
module CodeRay
module Scanners
load :html
load :ruby
# Nitro XHTML Scanner
#
# Alias: +nitro+
class NitroXHTML < Scanner
register_for :nitro_xhtml
file_extension :xhtml
title 'Nitro XHTML'
KINDS_NOT_LOC = HTML::KINDS_NOT_LOC
NITRO_RUBY_BLOCK = /
<\?r
(?>
[^\?]*
(?> \?(?!>) [^\?]* )*
)
(?: \?> )?
|
<ruby>
(?>
[^<]*
(?> <(?!\/ruby>) [^<]* )*
)
(?: <\/ruby> )?
|
<%
(?>
[^%]*
(?> %(?!>) [^%]* )*
)
(?: %> )?
/mx # :nodoc:
NITRO_VALUE_BLOCK = /
\#
(?:
\{
[^{}]*
(?>
\{ [^}]* \}
(?> [^{}]* )
)*
\}?
| \| [^|]* \|?
| \( [^)]* \)?
| \[ [^\]]* \]?
| \\ [^\\]* \\?
)
/x # :nodoc:
NITRO_ENTITY = /
% (?: \#\d+ | \w+ ) ;
/ # :nodoc:
START_OF_RUBY = /
(?=[<\#%])
< (?: \?r | % | ruby> )
| \# [{(|]
| % (?: \#\d+ | \w+ ) ;
/x # :nodoc:
CLOSING_PAREN = Hash.new { |h, p| h[p] = p } # :nodoc:
CLOSING_PAREN.update( {
'(' => ')',
'[' => ']',
'{' => '}',
} )
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_RUBY})/o) || scan_rest) and not match.empty?
@html_scanner.tokenize match
elsif match = scan(/#{NITRO_VALUE_BLOCK}/o)
start_tag = match[0,2]
delimiter = CLOSING_PAREN[start_tag[1,1]]
end_tag = match[-1,1] == delimiter ? delimiter : ''
encoder.begin_group :inline
encoder.text_token start_tag, :inline_delimiter
code = match[start_tag.size .. -1 - end_tag.size]
@ruby_scanner.tokenize code, :tokens => encoder
encoder.text_token end_tag, :inline_delimiter unless end_tag.empty?
encoder.end_group :inline
elsif match = scan(/#{NITRO_RUBY_BLOCK}/o)
start_tag = '<?r'
end_tag = match[-2,2] == '?>' ? '?>' : ''
encoder.begin_group :inline
encoder.text_token start_tag, :inline_delimiter
code = match[start_tag.size .. -(end_tag.size)-1]
@ruby_scanner.tokenize code, :tokens => encoder
encoder.text_token end_tag, :inline_delimiter unless end_tag.empty?
encoder.end_group :inline
elsif entity = scan(/#{NITRO_ENTITY}/o)
encoder.text_token entity, :entity
elsif scan(/%/)
encoder.text_token matched, :error
else
raise_inspect 'else-case reached!', encoder
end
end
encoder
end
end
end
end
|
