Class: Bbcode::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/bbcode/parser.rb

Overview

Attempts to pair a stream of tokens created by a tokenizer

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tokenizer = nil) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/bbcode/parser.rb', line 6

def initialize( tokenizer = nil )
	@tags_stack = []
	self.tokenizer = tokenizer unless tokenizer.blank?
end

Instance Attribute Details

#tokenizer ⇒ Object

Returns the value of attribute tokenizer.



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# File 'lib/bbcode/parser.rb', line 4

def tokenizer
  @tokenizer
end

Instance Method Details

#end_element(tagname, source) ⇒ Object 



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# File 'lib/bbcode/parser.rb', line 25

def end_element( tagname, source )
	return @tags_stack.last.blank? ? self.text(source) : end_element(@tags_stack.last, source) if tagname.blank?
	return self.text(source) unless @tags_stack.include?(tagname)

	@interruption_stack = []
	while @tags_stack.last != tagname do
		@interruption_stack << @tags_stack.last
		@handler.send :interrupt_element, @tags_stack.pop
	end

	@handler.send :end_element, @tags_stack.pop, source

	while !@interruption_stack.empty? do
		@tags_stack << @interruption_stack.last
		@handler.send :continue_element, @interruption_stack.pop
	end
end

#parse(document, handler) ⇒ Object 



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# File 'lib/bbcode/parser.rb', line 43

def parse( document, handler )
	@handler = handler
	@tokenizer.tokenize document do |*args|
		self.send *args if [:start_element, :end_element, :text].include?(args.first)
	end
end

#start_element(tagname, attributes, source) ⇒ Object 



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# File 'lib/bbcode/parser.rb', line 20

def start_element( tagname, attributes, source )
	@tags_stack << tagname
	@handler.send :start_element, tagname, attributes, source
end

#text(text) ⇒ Object 



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# File 'lib/bbcode/parser.rb', line 16

def text( text )
	@handler.send :text, text
end