Class: Tml::LanguageContext

Inherits:
Base
  • Object
show all
Defined in:
lib/tml/language_context.rb

Overview

– Copyright © 2017 Translation Exchange, Inc

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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ++

Instance Attribute Summary

Attributes inherited from Base

#attributes

Instance Method Summary collapse

Methods inherited from Base

attributes, belongs_to, has_many, hash_value, #hash_value, #method_missing, #to_hash, #update_attributes

Constructor Details

#initialize(attrs = {}) ⇒ LanguageContext

Returns a new instance of LanguageContext.



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# File 'lib/tml/language_context.rb', line 38

def initialize(attrs = {})
  super

  self.attributes[:rules] = {}
  if hash_value(attrs, :rules)
    hash_value(attrs, :rules).each do |key, rule|
      self.attributes[:rules][key] = Tml::LanguageContextRule.new(rule.merge(
       :keyword => key,
       :language_context => self
      ))
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Tml::Base

Instance Method Details

#applies_to_token?(token) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tml/language_context.rb', line 65

def applies_to_token?(token)
  token_expression.match(token) != nil
end

#config ⇒ Object 



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# File 'lib/tml/language_context.rb', line 52

def config
  context_rules = Tml.config.context_rules
  hash_value(context_rules, self.keyword.to_sym) || {}
end

#fallback_rule ⇒ Object 



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# File 'lib/tml/language_context.rb', line 69

def fallback_rule
  @fallback_rule ||= rules.values.detect{|rule| rule.fallback?}
end

#find_matching_rule(obj) ⇒ Object 



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# File 'lib/tml/language_context.rb', line 108

def find_matching_rule(obj)
  token_vars = vars(obj)
  rules.values.each do |rule|
    next if rule.fallback?
    return rule if rule.evaluate(token_vars)
  end
  fallback_rule
end

#token_expression ⇒ Object 



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# File 'lib/tml/language_context.rb', line 57

def token_expression
  @token_expression ||= begin
    exp = self.attributes[:token_expression]
    exp = Regexp.new(exp[1..-2])
    exp
  end
end

#vars(obj) ⇒ Object

prepare variables for evaluation



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# File 'lib/tml/language_context.rb', line 74

def vars(obj)
  vars = {}

  variables.each do |key|
    method = hash_value(config, "variables.#{key}")
    unless method
      vars[key] = obj
      next
    end

    if method.is_a?(String)
      if obj.is_a?(Hash)
        object = hash_value(obj, 'object') || obj
        if object.is_a?(Hash)
          vars[key] = hash_value(object, method, :whole => true)
        else
          vars[key] = object.send(method)
        end
      elsif obj.is_a?(String)
        vars[key] = obj
      else
        vars[key] = obj.send(method)
      end
    elsif method.is_a?(Proc)
      vars[key] = method.call(obj)
    else
      vars[key] = obj
    end

    vars[key] = vars[key].to_s if vars[key].is_a?(Symbol)
  end
  vars
end