Function ExpandHasMacro

parser/macro.cc:65–77

}

absl::optional<Expr> ExpandHasMacro(MacroExprFactory& factory,
                                    absl::Span<Expr> args) {
  if (args.size() != 1) {
    return factory.ReportError("has() requires 1 arguments");
  }
  if (!args[0].has_select_expr() || args[0].select_expr().test_only()) {
    return factory.ReportErrorAt(args[0],
                                 "has() argument must be a field selection");
  }
  return factory.NewPresenceTest(
      args[0].mutable_select_expr().release_operand(),
      args[0].mutable_select_expr().release_field());
}

Macro MakeHasMacro() {
  auto macro_or_status = Macro::Global(CelOperator::HAS, 1, ExpandHasMacro);