Class: BELParser::Language::Semantics::ListFunctionSubject

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

Overview

ListFunctionSubject implements a SemanticsFunction that maps a Parsers::AST::Subject to SemanticsWarning if a list Parsers::AST::Term is used as the Parsers::AST::Subject of a Parsers::AST::Statement.

Class Method Summary collapse

Class Method Details

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



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# File 'lib/bel_parser/language/semantics/list_function_subject.rb', line 16

def self.map(node, spec, _namespaces, will_match_partial = false)
  return nil unless node.is_a?(BELParser::Parsers::AST::Subject)

  list_func = spec.function(:list)
  return nil unless list_func

  return nil unless node.term.function
  return nil unless node.term.function.identifier
  func_name = node.term.function.identifier.string_literal
  sub_func  = spec.function(func_name.to_sym)
  ListFunctionSubjectWarning.new(node, spec) if sub_func == list_func
end