class BELParser::Language::Semantics::MultipleSubjectObject

MultipleSubjectObject implements a {SemanticsFunction} that maps a {BELParser::Parsers::AST::Statement} to a {SemanticsWarning} if the subject term is referenced as an argument of the object list term.

Public Class Methods

map(stmt_node, spec, _namespaces, will_match_partial = false) click to toggle source
# File lib/bel_parser/language/semantics/multiple_subject_object.rb, line 14
def self.map(stmt_node, spec, _namespaces, will_match_partial = false)
  return nil unless stmt_node.is_a?(BELParser::Parsers::AST::Statement)
  return nil unless stmt_node.relationship?
  return nil if stmt_node.relationship.string_literal.nil?
  rel = spec.relationship(stmt_node.relationship.string_literal.to_sym)
  return nil unless rel
  return nil unless rel.listable?

  list_func = spec.function(:list)
  return nil unless list_func
  return nil unless stmt_node.object?
  return nil unless stmt_node.object.term?

  map_subject_object(stmt_node, rel, spec)
end
map_subject_object(stmt_node, rel, spec) click to toggle source
# File lib/bel_parser/language/semantics/multiple_subject_object.rb, line 30
def self.map_subject_object(stmt_node, rel, spec)
  sub_term  = stmt_node.subject.term
  list_term = stmt_node.object.child

  return nil if list_term.arguments.empty?
  if list_term.arguments.any? { |arg| arg.child && sub_term == arg.child }
    MultipleSubjectObjectWarning.new(stmt_node, spec, rel)
  end
end