Method FlattenSubexpression

eval/compiler/flat_expr_builder_extensions.cc:275–286

}

std::vector<std::unique_ptr<const ExpressionStep>>
ProgramBuilder::FlattenSubexpression(Subexpression* expr) {
  std::vector<std::unique_ptr<const ExpressionStep>> out;

  if (!expr) {
    return out;
  }

  expr->Flatten();
  expr->ExtractTo(out);
  return out;
}

ProgramBuilder::ProgramBuilder()
    : root_(nullptr), current_(nullptr), subprogram_map_() {}