# Grammar for a simple subset of English language # It is called Zenlish require 'rley' # Load the Rley parsing library require_relative '../lex/empty_lexicon' ######################################## # Define a grammar for a highly English-like language builder = Rley::Syntax::GrammarBuilder.new do add_terminals(*$ZenlishLexicon.terminals) rule 'language' => 'sentence' rule 'sentence' => 'simple_sentence Period' rule 'sentence' => 'complex_sentence Period' rule 'simple_sentence' => 'declarative_simple_sentence' rule 'complex_sentence' => 'main_clause subordination_marker dependent_clause' rule 'complex_sentence' => 'main_clause Comma subordination_marker dependent_clause' rule 'complex_sentence' => 'subordination_marker dependent_clause Comma main_clause' rule 'complex_sentence' => 'subordination_marker dependent_clause Comma LinkingAdverb main_clause' rule 'subordination_marker' => 'SubordinatingConjunction' rule 'subordination_marker' => 'SubordinatingConjunction PrepositionOf' rule 'declarative_simple_sentence' => 'affirmative_sentence' rule 'declarative_simple_sentence' => 'negative_sentence' rule 'main_clause' => 'simple_sentence' rule 'dependent_clause' => 'simple_sentence' rule 'dependent_clause' => 'DemonstrativePronoun' rule 'affirmative_sentence' => 'noun_phrase verb_phrase' rule 'affirmative_sentence' => 'AdverbThere IrregularVerbBe verb_be_complement' rule 'affirmative_sentence' => 'numeral_of IrregularVerbBe verb_be_complement' rule 'affirmative_sentence' => 'DemonstrativePronoun IrregularVerbBe verb_be_complement' rule 'affirmative_sentence' => 'DemonstrativePronoun IrregularVerb verb_complement' rule 'affirmative_sentence' => 'conjunctive_prefix IrregularVerbBe verb_be_complement' rule 'negative_sentence' => 'noun_phrase negative_verb_phrase' rule 'negative_sentence' => 'AdverbThere negative_verb_phrase' rule 'negative_sentence' => 'numeral_of negative_verb_phrase' rule 'negative_sentence' => 'DemonstrativePronoun negative_verb_phrase' rule 'negative_sentence' => 'conjunctive_prefix negative_verb_phrase' rule 'conjunctive_prefix' => 'ConjunctivePronoun noun_phrase verb_phrase' rule 'noun_phrase' => 'simple_noun_phrase' rule 'noun_phrase' => 'compound_noun_phrase' rule 'simple_noun_phrase' => 'nominal' rule 'simple_noun_phrase' => 'determiner nominal' rule 'simple_noun_phrase' => 'numeral nominal' rule 'simple_noun_phrase' => 'determiner numeral nominal' rule 'simple_noun_phrase' => 'simple_noun_phrase simple_noun_phrase verb_phrase' # Case: (all|many|some) one of (this|these) rule 'simple_noun_phrase' => 'subset_of noun_phrase' # CGE p.359, 360: of + definite noun phrase rule 'simple_noun_phrase' => 'numeral_of noun_phrase' rule 'simple_noun_phrase' => 'ProperNoun' # rule 'simple_noun_phrase' => 'DemonstrativePronoun' rule 'simple_noun_phrase' => 'IndefinitePronoun' rule 'simple_noun_phrase' => 'IndefinitePronoun Adjective' rule 'compound_noun_phrase' => 'simple_noun_phrase propositional_phrase' rule 'compound_noun_phrase' => 'simple_noun_phrase comparative_clause' # of this/these... rule 'numeral_of' => 'numeral PrepositionOf DemonstrativeDeterminer' rule 'numeral_of' => 'numeral PrepositionOf DefiniteArticle' rule 'subset_of' => 'IndefiniteQuantifier PrepositionOf DemonstrativeDeterminer' rule 'nominal' => 'CommonNoun' rule 'nominal' => 'Adjective CommonNoun' rule 'determiner' => 'determiner single_determiner' rule 'determiner' => 'single_determiner' rule 'single_determiner' => 'DemonstrativeDeterminer' rule 'single_determiner' => 'DefiniteArticle' rule 'single_determiner' => 'IndefiniteQuantifier' rule 'verb_phrase' => 'verb_group' rule 'verb_phrase' => 'verb_group verb_complement' rule 'verb_phrase' => 'RegularVerb propositional_phrase' rule 'verb_phrase' => 'RegularVerbWant Preposition verb_group' rule 'verb_phrase' => 'RegularVerbWant Preposition verb_group noun_phrase' rule 'verb_phrase' => 'IrregularVerbDo DemonstrativePronoun' rule 'verb_phrase' => 'ModalVerbCan verb_group DemonstrativePronoun' rule 'verb_phrase' => 'IrregularVerbBe verb_be_complement' rule 'verb_phrase' => 'IrregularVerbSay Colon Quote affirmative_sentence Period Quote' rule 'verb_complement' => 'noun_phrase' rule 'verb_complement' => 'Adjective propositional_phrase' rule 'verb_complement' => 'noun_phrase IrregularVerbBe verb_be_complement' rule 'verb_complement' => 'adverb_phrase' rule 'verb_complement' => 'noun_phrase adverb_phrase' rule 'verb_be_complement' => 'noun_phrase' rule 'verb_be_complement' => 'adjective_as_complement' # Specific to be as lexical verb rule 'verb_be_complement' => 'propositional_phrase' rule 'adjective_as_complement' => 'DegreeAdverb Adjective' rule 'adjective_as_complement' => 'Adjective' rule 'adjective_as_complement' => 'Adjective comparative_clause' rule 'negative_verb_phrase' => 'IrregularVerbBe AdverbNot verb_be_complement' rule 'negative_verb_phrase' => 'AuxiliaryDo AdverbNot verb_phrase' # rule 'negative_verb_phrase' => 'ModalVerbCan AdverbNot verb_phrase' rule 'negative_verb_phrase' => 'ModalVerbCan AdverbNot verb_group DemonstrativePronoun' rule 'verb_group' => 'lexical_verb' rule 'verb_group' => 'AuxiliaryBe lexical_verb' rule 'verb_group' => 'ModalVerbCan lexical_verb' rule 'lexical_verb' => 'RegularVerb' rule 'lexical_verb' => 'RegularVerbWant' rule 'lexical_verb' => 'IrregularVerb' rule 'lexical_verb' => 'IrregularVerbBe' rule 'lexical_verb' => 'IrregularVerbDo' rule 'lexical_verb' => 'IrregularVerbHave' rule 'lexical_verb' => 'IrregularVerbSay' rule 'numeral' => 'Cardinal' rule 'comparative_clause' => 'comparative_start noun_phrase' rule 'comparative_clause' => 'comparative_start affirmative_sentence' rule 'comparative_clause' => 'comparative_start DefiniteArticle Adjective Cardinal' rule 'comparative_start' => 'PrepositionThan' rule 'comparative_start' => 'ComparativeParticle' rule 'adverb_phrase' => 'Adverb' rule 'adverb_phrase' => 'Adverb propositional_phrase' rule 'propositional_phrase' => 'preposition propositional_complement' rule 'propositional_phrase' => 'preposition' rule 'propositional_complement' => 'noun_phrase' rule 'preposition' => 'Preposition' rule 'preposition' => 'PrepositionOf' end # CGE p. 354 The order of determiners: quantifier > article or demonstrative # or possessive > numeral > head # And now build the grammar... ZenlishGrammar = builder.grammar