Method FlattenMain

eval/compiler/flat_expr_builder_extensions.cc:291–295

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

ExecutionPath ProgramBuilder::FlattenMain() {
  auto out = FlattenSubexpression(root_);
  root_ = nullptr;
  return out;
}

std::vector<ExecutionPath> ProgramBuilder::FlattenSubexpressions() {
  std::vector<ExecutionPath> out;