espWord.grammar

start_word: (word WHITESPACE+)* word

!word: (((root | prefix | suffix) connective)? (root | prefix | suffix))+  ending
	 | memstaro
	 | correlative

!ending: verb
	   | noun num_and_case
	   | adjective num_and_case
	   | adverb directional_accusative?

verb: _FUTURE -> verb_future
	| _PERFECT -> verb_perfect
	| _PRESENCE -> verb_presence
	| _SUBJUNCTIVE -> verb_subjunctive
	| _IMPERATIVE -> verb_imperative
	| _INFINITIVE -> verb_infinitive
noun: "o"
adjective: "a"
adverb: "e"
num_and_case: [plural] [accusative]

plural: "j"
accusative: "n"
directional_accusative: "n"

_FUTURE: "os"
_PERFECT: "is"
_PRESENCE: "as"
_SUBJUNCTIVE: "us"
_IMPERATIVE: "u"
_INFINITIVE: "i"

connective: "o" -> connection
	      | "a" -> connection
          | "e" -> connection

!root: LETTER LETTER+
LETTER: "a" | "b" | "c" | "ĉ" | "d" | "e" | "f"
      | "g" | "ĝ" | "h" | "ĥ" | "i" | "j" | "ĵ"
      | "k" | "l" | "m" | "n" | "o" | "p" | "r"
      | "s" | "ŝ" | "t" | "u" | "ŭ" | "ǔ" | "û"
      | "v" | "z" | "x" | "-" | "A" | "B" | "C"
      | "Ĉ" | "D" | "E" | "F" | "G" | "Ĝ" | "H"
      | "Ĥ" | "I" | "J" | "Ĵ" | "K" | "L" | "M"
      | "N" | "O" | "P" | "R" | "S" | "Ŝ" | "T"
      | "U" | "Ŭ" | "Ǔ" | "Û" | "V" | "Z" | "X"
%import common.WS -> WHITESPACE

correlative: pref_corr (suff_corr_indecl | suff_corr_decl num_and_case | suff_corr_decl_no_num accusative? | suff_corr_decl_dir_acc directional_accusative?)

pref_corr: "ki" -> ki_question
		 | "ti" -> ti_indication
		 | "i" -> i_indefinite
		 | "ĉi" -> cxi_universal
		 | "neni" -> neni_negative
suff_corr_indecl: "am" -> am_time
				| "el" -> el_manner
				| "om" -> om_amount
				| "al" -> al_reason
				| "es" -> es_posession
suff_corr_decl: "u" -> u_individual
			  | "a" -> a_quality
suff_corr_decl_no_num: "o" -> o_thing
suff_corr_decl_dir_acc: "e" -> e_place


start_num: number
_delimitor: " "
_dek: "dek"
_cent: "cent"
_mil: "mil"
_MILIONO: "miliono"
_MILIARDO: "miliardo"
_BILIONO: "biliono"
_BILIARDO: "biliardo"
!digit: "du" | "tri" | "kvar" | "kvin" | "ses" | "sep" | "ok" | "naŭ"
!digit_term: (digit | "unu") _delimitor
!digit_alone: (digit_term | "nulo") _delimitor
!dekpot: (digit? _dek _delimitor)
!centpot: (digit? _cent _delimitor)
!milpot: (pot? _mil _delimitor)
!pot: (centpot? dekpot? digit_term?)
_plural: "j" _delimitor
!bigger_pot{potency}: (potency _delimitor | pot potency _plural)
!number: digit_alone | bigger_pot{_BILIARDO}? bigger_pot{_BILIONO}? bigger_pot{_MILIARDO}? bigger_pot{_MILIONO}? milpot? centpot? dekpot? digit_term?