Project: sentence_interpreter

sentence_interpreter gem

Installation

gem install sentence_interpreter

Usage

require 'sentence_interpreter'
VerbLexicon[:print] = true 
NounLexicon[:hello] = true
SentenceInterpreter.interpret("print hello")
# => [ { verb: :print, nouns: ["hello"] } ]

In the VerbLexicon and NounLexicon hashes, the values can be any truthy value so the word is considered "defined". For example, it could be a proc which can be evaluated:

  require 'sentence_interpreter'
  
  class String
    def eval_noun
     NounLexicon[self.to_sym].call
    end
  end
  
  class Array
    def run_commands
      map { |cmd| VerbLexicon[cmd[:verb].to_sym].call *(cmd[:nouns].map(&:eval_noun)) }
      .join("\n")
    end
  end
  
  VerbLexicon[:print] = ->(*args) { print args.join(" ") }
  NounLexicon[:hello] = ->() { "hello" }
  SentenceInterpreter.interpret("print hello").run_commands
# => "hello"

The following rules will explain the functionality a little clearer:

a "phrase" is considered a verb followed by any number of nouns.
verbs and nouns are defined as the keys of the NounLexicon or VerbLexicon hashes.
All words other than the verbs and nouns are ignored

Some more examples:

require 'sentence_interpreter'

VerbLexicon[:visit] = true
NounLexicon[:website] = true
NounLexicon[:github] = true

SentenceInterpreter.interpret("visit website github")
# => [{ verb: :visit, nouns: ["website", "github"] }]

begin
  SentenceInterpreter.interpret("github visit")
rescue NounBeforeVerbError => e
  puts "error"
  # This error was called because the noun (github) comes before the verb (visit)
end

SentenceInterpreter.interpret("visit website github and visit github website")
# => [{verb: :visit, nouns: ["website", "github"]}, {verb: :visit, nouns: ["github", "website"]}]