Class: J2119::NodeValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/j2119/node_validator.rb

Instance Method Summary collapse

Constructor Details

#initialize(parser) ⇒ NodeValidator

Returns a new instance of NodeValidator.



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# File 'lib/j2119/node_validator.rb', line 18

def initialize(parser)
  @parser = parser
end

Instance Method Details

#validate_node(node, path, roles, problems) ⇒ Object 



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# File 'lib/j2119/node_validator.rb', line 22

def validate_node(node, path, roles, problems)

  if !node.is_a?(Hash)
    return
  end

  # may have more roles based on field presence/value etc
  @parser.find_more_roles(node, roles)

  # constraints are attached per-role
  # TODO - look through the constraints and if there is a
  #  "Field should not exist" constraint, then disable
  #  type and value checking constraints
  #
  roles.each do |role|
    @parser.get_constraints(role).each do |constraint|
      if constraint.applies(node, roles)
        constraint.check(node, path, problems)
      end
    end
  end

  # for each field
  node.each do |name, val|

    if !@parser.field_allowed?(roles, name)
      problems << "Field \"#{name}\" not allowed in #{path}"
    end

    # only recurse into children if they have roles
    child_roles = @parser.find_child_roles(roles, name)
    if !child_roles.empty?
      validate_node(val, "#{path}.#{name}", child_roles, problems)
    end

    # find inheritance-based roles for that field
    grandchild_roles = @parser.find_grandchild_roles(roles, name)
    if (!grandchild_roles.empty?) && (!@parser.allows_any?(grandchild_roles))
      # recurse into grandkids
      if val.is_a? Hash
        val.each do |child_name, child_val|
          validate_node(child_val, "#{path}.#{name}.#{child_name}",
                        grandchild_roles.clone, problems)
        end
      elsif val.is_a? Array
        i = 0
        val.each do |member|
          validate_node(member, "#{path}.#{name}[#{i}]",
                        grandchild_roles.clone, problems)
          i += 1
        end
      end
    end
  end
end