Module: Linguistics::EN::Conjugation

Extended by:
Loggability
Defined in:
lib/linguistics/en/conjugation.rb

Overview

This file contains functions for conjugating verbs.

Version

$Id: conjugation.rb,v 8b1c8ec50991 2012/08/22 02:09:29 ged $

Authors

Based on MorphAdorner (morphadorner.northwestern.edu/), which is licensed under the following terms:

Copyright © 2006-2009 by Northwestern University. All rights reserved.

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Constant Summary collapse

IRREGULAR_VERBS =

Hash of irregular verb infinitives, read from the DATA section of the file

{}
DOUBLING_VERBS =

Array of doubling verbs, read from the DATA section of the file

[]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(mod) ⇒ Object

Inclusion hook – load the verb data when the module is first included.



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# File 'lib/linguistics/en/conjugation.rb', line 204

def self::included( mod ) # :nodoc:
	if IRREGULAR_VERBS.empty?
		self.log.debug "Loading conjunctions data."
		data = File.read( __FILE__ ).split( /^__END__$/ ).last
		irrverb_data, doublverb_data = data.split( /^#\n# Doubling Verbs.*\n#\n/, 2 )
		IRREGULAR_VERBS.replace( self.load_irregular_verbs(irrverb_data) )
		self.log.debug "  loaded %d irregular verbs" % [ IRREGULAR_VERBS.length ]

		DOUBLING_VERBS.replace( self.load_doubling_verbs(doublverb_data) )
		self.log.debug "  loaded %d doubling verbs" % [ DOUBLING_VERBS.length ]
	end

	super
end

.load_doubling_verbs(data) ⇒ Object

Load the doubling verbs from the given data and return the resulting Array.



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# File 'lib/linguistics/en/conjugation.rb', line 248

def self::load_doubling_verbs( data )
	self.log.debug "  loading doubling verbs."
	results = []

	data.each_line do |line|
		next if line =~ /^(#|\s*$)/ # Skip comments and blank lines
		results << line.chomp
	end

	self.log.debug "  %d doubling verbs loaded." % [ results.length ]
	return results
end

.load_irregular_verbs(data) ⇒ Object

Parse irregular verbs from the given data, and return the resulting Hash.



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# File 'lib/linguistics/en/conjugation.rb', line 221

def self::load_irregular_verbs( data )
	self.log.debug "  loading irregular verbs from %d bytes of data." % [ data.length ]
	results = {}

	data.each_line do |line|
		if line =~ /^(#|\s*$)/ # Skip comments and blank lines
			# self.log.debug "  skipping line: %p" % [ line ]
			next
		end

		infinitive, person, tense, conjugation = line.chomp.split( /\s+/, 4 )
		# self.log.debug "  line split into: %p" %
		#	[[ infinitive, person, tense, conjugation ]]

		raise "malformed line: %p" % [ line ] unless infinitive && person && tense && conjugation

		results[ infinitive ] ||= {}
		results[ infinitive ][ person.to_sym ] ||= {}
		results[ infinitive ][ person.to_sym ][ tense.to_sym ] = conjugation
	end

	self.log.debug "  %d infinitives loaded." % [ results.length ]
	return results
end

Instance Method Details

#conjugate(tense, person = nil) ⇒ Object

Conjugate the receiving string as an infinitive with the specified tense and person.



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# File 'lib/linguistics/en/conjugation.rb', line 97

def conjugate( tense, person=nil )
	self.log.debug "Conjugating %p in %s tense, %s person" %
		[ self.to_s, tense, person || "any" ]
	person ||= :*
	verb = self.to_s.downcase

	if result = get_irregular( verb, person, tense )
		self.log.debug "  verb %p is irregular: %p" % [ verb, result ]
		return result
	end

	self.log.debug "  regular verb: conjugating by tense"
	return case tense
		when :present
			conjugate_present( verb, person )
		when :present_participle
			conjugate_present_participle( verb )
		when :past
			conjugate_past( verb )
		when :past_participle
			conjugate_past_participle( verb )
		else
			verb
		end
end

#past_participle(person = nil) ⇒ Object

Return the past participle of the word



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# File 'lib/linguistics/en/conjugation.rb', line 77

def past_participle( person=nil )
	return self.conjugate( :past_participle, person )
end

#past_tense(person = nil) ⇒ Object

Return the past tense of the word



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# File 'lib/linguistics/en/conjugation.rb', line 71

def past_tense( person=nil )
	return self.conjugate( :past, person )
end

#present_participle(person = nil) ⇒ Object

Return the present participle of the word



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# File 'lib/linguistics/en/conjugation.rb', line 89

def present_participle( person=nil )
	return self.conjugate( :present_participle, person )
end

#present_tense(person = nil) ⇒ Object

Return the present tense of the word



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# File 'lib/linguistics/en/conjugation.rb', line 83

def present_tense( person=nil )
	return self.conjugate( :present, person )
end