Class: Slamdown::Conversion::SemanticExtractor

Inherits:
Object
  • Object
show all
Defined in:
lib/slamdown/conversion/semantic_extractor.rb

Overview

Reads the small registered set of semantic source attributes before retention policy can discard those attributes.

Constant Summary collapse

HTML_WHITESPACE = 
/[\t\n\f\r ]+/.freeze
LANGUAGE_CLASS = 
/\Alanguage-([A-Za-z0-9+_.-]+)\z/.freeze
RECOGNISED_STYLE_PROPERTIES = 
%w[font-weight font-style text-decoration].freeze

Instance Method Summary collapse

Instance Method Details

#consumed_class?(node, token) ⇒ Boolean

Language classes become fence metadata and must not also survive as presentation classes.

Returns:

  • (Boolean) 


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# File 'lib/slamdown/conversion/semantic_extractor.rb', line 25

def consumed_class?(node, token)
	["code", "pre"].include?(node.source_name) && LANGUAGE_CLASS.match(token)
end

#extract(node) ⇒ Object 



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# File 'lib/slamdown/conversion/semantic_extractor.rb', line 12

def extract(node)
	attributes = Hash[node.attributes]
	values = {}

	extract_image_fallback(node, attributes, values)
	extract_span_styles(node, attributes, values)
	extract_code_language(node, attributes, values)
	extract_table_spans(node, attributes, values)

	values
end