Module: Duxml::ValueRule

Included in:
ValueRuleClass
Defined in:
lib/duxml/meta/grammar/rule/value_rule.rb,
lib/duxml/meta/grammar/rule/value_rule.rb

Constant Summary collapse

CDATA_EXPR = 
/(\]\]>)/
ENTITY_EXPR = 
/(\b[\S]+\b)/
ID_EXPR = 
Regexp.nmtoken
NMTOKEN_EXPR = 
ID_EXPR
NOTATION_EXPR = 
//

Instance Method Summary collapse

Instance Method Details

#abstract? ⇒ true

Returns:

  • (true) 


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# File 'lib/duxml/meta/grammar/rule/value_rule.rb', line 29

def abstract?
  true
end

#applies_to?(change_or_pattern) ⇒ Boolean

Returns whether this rule does in fact apply.

Parameters:

Returns:

  • (Boolean) —

    whether this rule does in fact apply



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# File 'lib/duxml/meta/grammar/rule/value_rule.rb', line 52

def applies_to?(change_or_pattern)
      return false unless change_or_pattern.respond_to?(:attr_name)
      return false unless change_or_pattern.respond_to?(:value)
      change_or_pattern.attr_name == attr_name
end

#description ⇒ String

Returns description of this rule.

Returns:

  • (String) —

    description of this rule



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# File 'lib/duxml/meta/grammar/rule/value_rule.rb', line 34

def description
  %(#{relationship.capitalize} Rule that @#{attr_name}'s #{relationship} must match '#{statement}')
end

#qualify(change_or_pattern) ⇒ Boolean

Returns whether change_or_pattern#subject is allowed to have value of type #object if false, reports Error to History.

Parameters:

Returns:

  • (Boolean) —

    whether change_or_pattern#subject is allowed to have value of type #object if false, reports Error to History

Raises:

  • (Exception) 


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# File 'lib/duxml/meta/grammar/rule/value_rule.rb', line 41

def qualify(change_or_pattern)
  value = change_or_pattern.value
  s = change_or_pattern.subject
  raise Exception if value.nil?
  result = pass value
  super change_or_pattern unless result
  result
end