Method: Mathemagical::LaTeX::Scanner#scan_block

Defined in:
lib/mathemagical/latex.rb

#scan_block ⇒ Object 



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# File 'lib/mathemagical/latex.rb', line 87

def scan_block
	return nil unless scan(/\{/)
	block = "{"
	bpos = pos-1
	nest = 1
	while _scan(/(#{MBEC}*?)([\{\}])/)
		block << matched
		case self[2]
		when "{"
			nest+=1
		when "}"
			nest-=1
			break if nest==0
		end
	end
	if nest>0
		self.pos = bpos
		raise BlockNotClosed
	end
	self.pos = bpos
	_scan(/\A\{(#{Regexp.escape(block[RE::BLOCK, 1].to_s)})\}/)
end