# Natural Language Processor
#
# NLPProcessor provides natural language processing for input text and files.
# Analyzed documents can be manipulated through the resulting NLPDocument.
interface NLPProcessor

	# Creates a new NLPDocument from a string
	fun process(string: String): NLPDocument is abstract

	# Creates a new NLPDocument from a file content
	fun process_file(path: String): NLPDocument do
		var content = path.to_path.read_all
		return process(content)
	end

	# Creates a new NLPDocument from a list of files (batch mode)
	#
	# Returns a map of file path associated with their NLPDocument.
	fun process_files(paths: Array[String]): Map[String, NLPDocument] do
		var res = new HashMap[String, NLPDocument]
		for file in paths do
			res[file] = process_file(file)
		end
		return res
	end
end