object-introspection/types/cxx11_string_type.toml

[info]
type_name = "std::__cxx11::basic_string"
stub_template_params = [2]
ctype = "STRING_TYPE"
header = "string"

# Old:
typeName = "std::__cxx11::basic_string<"
ns = ["namespace std"]
numTemplateParams = 1
replaceTemplateParamIndex = []

[codegen]
decl = """
template<typename T, typename Traits, typename Allocator>
void getSizeType(const %1%<T, Traits, Allocator> &container, size_t& returnArg);
"""

func = """
template<typename T, typename Traits, typename Allocator>
void getSizeType(const %1%<T, Traits, Allocator> &container, size_t& returnArg)
{
    SAVE_SIZE(sizeof(%1%<T>));

    SAVE_DATA((uintptr_t)container.capacity());
    SAVE_DATA((uintptr_t)container.size());

    // Test for small string optimisation - whether the underlying string is
    // contained within the string object.
    SAVE_SIZE(
      (((uintptr_t)container.data() < (uintptr_t)(&container + sizeof(%1%<T>)))
        &&
      ((uintptr_t)container.data() >= (uintptr_t)&container))
        ? 0 : (container.capacity() * sizeof(T))
    );
}
"""

handler = """
template <typename DB, typename T0>
struct TypeHandler<DB, %1% <T0>> {
  using type =
      types::st::Pair<DB, types::st::VarInt<DB>, types::st::VarInt<DB>>;

  static types::st::Unit<DB> getSizeType(
      const %1% <T0> & container,
      typename TypeHandler<DB, %1% <T0>>::type returnArg) {
    bool sso = ((uintptr_t)container.data() <
                (uintptr_t)(&container + sizeof(%1% <T0>))) &&
               ((uintptr_t)container.data() >= (uintptr_t)&container);

    return returnArg.write(container.capacity()).write(container.size());
  }
};
"""

traversal_func = """
    bool sso = ((uintptr_t)container.data() <
                (uintptr_t)(&container + sizeof(std::__cxx11::basic_string<T0>))) &&
               ((uintptr_t)container.data() >= (uintptr_t)&container);

    return returnArg.write(container.capacity())
        .write(sso)
        .write(container.size());
"""

[[codegen.processor]]
type = "types::st::VarInt<DB>"
func = """
uint64_t capacity = std::get<ParsedData::VarInt>(d.val).value;
el.container_stats.emplace(result::Element::ContainerStats { .capacity = capacity });
"""

[[codegen.processor]]
type = "types::st::VarInt<DB>"
func = """
bool sso = std::get<ParsedData::VarInt>(d.val).value;
if (!sso)
  el.exclusive_size += el.container_stats->capacity * sizeof(T0);
"""

[[codegen.processor]]
type = "types::st::VarInt<DB>"
func = """
el.container_stats->length = std::get<ParsedData::VarInt>(d.val).value;
"""