Class: BELParser::Language::Semantics::SignatureMapping

Inherits:
Object
  • Object
show all
Includes:
SemanticsFunction
Defined in:
lib/bel_parser/language/semantics/signature_mapping.rb

Overview

SignatureMapping implements a SemanticsFunction that maps a Parsers::AST::Node to SemanticsResult by checking each signature for the Function.

See Also:

Class Method Summary collapse

Class Method Details

.map(term_node, spec, _namespaces, will_match_partial = false) ⇒ Object

Map term to BEL signatures defined by a BELParser::Language::Specification. The mapping includes both successful and failed signature matches.



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# File 'lib/bel_parser/language/semantics/signature_mapping.rb', line 20

def self.map(term_node, spec, _namespaces, will_match_partial = false)
  return nil unless term_node.is_a?(BELParser::Parsers::AST::Term)
  return nil unless term_node.function
  return nil unless term_node.function.identifier

  # double negate truthy or falsey value to strict boolean
  will_match_partial = !!will_match_partial

  function_name = term_node.function.identifier.string_literal
  function      = spec.function(function_name.to_sym)
  return nil unless function

  function.signatures.map { |signature|
    self._map_signature(term_node, spec, signature, will_match_partial)
  }
end