object-introspection/dev.oid.toml
Alastair Robertson 3d91603c8e TypeGraph: Fix std::string container
std::basic_string takes three template parameters:
1. CharT
2. Traits
3. Allocator

The Traits parameter was causing issues, as it requires a type which
exposes certain things, e.g. `Traits::value_type`.

We have a few options to resolve this:
1. Remove this parameter, as we do for allocators
    Cons: removing a template parameter doesn't work if other
    parameters appear after it

2. Stub this parameter, as we do for hashers/comparators
    Cons: we need to hardcode an implementation that satisfies the
    `Traits::value_type` requirements

3. Leave the parameter as-is
    Cons: will not work if a non-standard Traits is used

    By using the real implementation of this Traits parameter
    (normally `std::char_traits<CharT>`), we get one that we know will
    work as long as it is defined in a stdlib header.

Option 3 is what we use in this patch. Instead of adding more
configuration options to the container TOML file format (e.g.
`params_to_keep = [1]`), we add `std::char_traits` as a dummy
container type. Now, whenever `std::char_traits` appears, it will be
left as-is, i.e. not removed, replaced or reverse-engineered.

This is the same approach previously used for Thrift's isset_bitset.
2023-05-30 17:17:29 +01:00

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TOML

# DON'T use this file directly.
#
# It is used to extend sample.oid.toml for development purposes.
[types]
containers = [
"PWD/types/array_type.toml",
"PWD/types/string_type.toml",
"PWD/types/cxx11_string_type.toml",
"PWD/types/folly_iobuf_type.toml",
"PWD/types/folly_iobuf_queue_type.toml",
"PWD/types/set_type.toml",
"PWD/types/unordered_set_type.toml",
"PWD/types/seq_type.toml",
"PWD/types/list_type.toml",
"PWD/types/cxx11_list_type.toml",
"PWD/types/deque_list_type.toml",
"PWD/types/shrd_ptr_type.toml",
"PWD/types/uniq_ptr_type.toml",
"PWD/types/std_map_type.toml",
"PWD/types/std_unordered_map_type.toml",
"PWD/types/pair_type.toml",
"PWD/types/stack_container_adapter_type.toml",
"PWD/types/queue_container_adapter_type.toml",
"PWD/types/priority_queue_container_adapter_type.toml",
"PWD/types/ref_wrapper_type.toml",
"PWD/types/multi_map_type.toml",
"PWD/types/folly_small_heap_vector_map.toml",
"PWD/types/folly_optional_type.toml",
"PWD/types/optional_type.toml",
"PWD/types/try_type.toml",
"PWD/types/fb_string_type.toml",
"PWD/types/small_vec_type.toml",
"PWD/types/f14_fast_map.toml",
"PWD/types/f14_node_map.toml",
"PWD/types/f14_vector_map.toml",
"PWD/types/f14_fast_set.toml",
"PWD/types/f14_node_set.toml",
"PWD/types/f14_vector_set.toml",
"PWD/types/sorted_vec_set_type.toml",
"PWD/types/map_seq_type.toml",
"PWD/types/boost_bimap_type.toml",
"PWD/types/repeated_field_type.toml",
"PWD/types/repeated_ptr_field_type.toml",
"PWD/types/caffe2_blob_type.toml",
"PWD/types/std_variant.toml",
"PWD/types/thrift_isset_type.toml",
"PWD/types/weak_ptr_type.toml",
"PWD/types/std_char_traits.toml",
]