mirror of
https://github.com/JakeHillion/object-introspection.git
synced 2024-09-19 19:19:05 +01:00
592e182e0f
Summary: tbv2: replace DB template param with Ctx TreeBuilder v2 adds a DB template parameter to every function. This is used as part of the static type to decide what type of DataBuffer is being used: currently `BackInserterDataBuffer<std::vector<uint8_t>>` for OIL and it would be `DataSegmentDataBuffer` for OID. This change replaces the `DB` template parameter with a more general `Ctx`. Due to issues with dependent naming it also adds a `using DB` to each `TypeHandler` which has the same function as before. This allows us to add more "static context" (typedefs and constants) to functions without changing this signature again, because changing the signature of everything is a massive pain. Currently this change achieves nothing because Ctx contains only DB in a static wrapper. In the next change I'm going to pass a reference of type Ctx around to add a "dynamic context" to invocations which will contain the pointer array. In future we'll then be able to add either static or dynamic context without any signature adjustments. Test Plan: - CI --- Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebookexperimental/object-introspection/pull/409). * https://github.com/facebookexperimental/object-introspection/issues/410 * __->__ https://github.com/facebookexperimental/object-introspection/issues/409 Reviewed By: ajor Differential Revision: D51352092 Pulled By: JakeHillion
87 lines
2.4 KiB
TOML
87 lines
2.4 KiB
TOML
[info]
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type_name = "std::__cxx11::basic_string"
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stub_template_params = [2]
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ctype = "STRING_TYPE"
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header = "string"
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# Old:
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typeName = "std::__cxx11::basic_string<"
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ns = ["namespace std"]
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numTemplateParams = 1
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replaceTemplateParamIndex = []
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[codegen]
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decl = """
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template<typename T, typename Traits, typename Allocator>
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void getSizeType(const %1%<T, Traits, Allocator> &container, size_t& returnArg);
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"""
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func = """
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template<typename T, typename Traits, typename Allocator>
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void getSizeType(const %1%<T, Traits, Allocator> &container, size_t& returnArg)
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{
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SAVE_SIZE(sizeof(%1%<T>));
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SAVE_DATA((uintptr_t)container.capacity());
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SAVE_DATA((uintptr_t)container.size());
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// Test for small string optimisation - whether the underlying string is
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// contained within the string object.
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SAVE_SIZE(
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(((uintptr_t)container.data() < (uintptr_t)(&container + sizeof(%1%<T>)))
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&&
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((uintptr_t)container.data() >= (uintptr_t)&container))
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? 0 : (container.capacity() * sizeof(T))
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);
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}
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"""
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extra = """
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template <typename Ctx, typename CharT, typename Traits, typename Allocator>
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class CaptureKeyHandler<Ctx, std::__cxx11::basic_string<CharT, Traits, Allocator>> {
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using DB = typename Ctx::DataBuffer;
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public:
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// List of characters
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using type = types::st::List<DB, types::st::VarInt<DB>>;
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static auto captureKey(const std::__cxx11::basic_string<CharT, Traits, Allocator>& key, auto returnArg) {
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auto tail = returnArg.write(key.size());
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for (auto c : key) {
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tail = returnArg.write((uintptr_t)c);
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}
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return tail.finish();
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}
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};
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"""
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traversal_func = """
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bool sso = ((uintptr_t)container.data() <
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(uintptr_t)(&container + sizeof(std::__cxx11::basic_string<T0>))) &&
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((uintptr_t)container.data() >= (uintptr_t)&container);
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return returnArg.write(container.capacity())
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.write(sso)
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.write(container.size());
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"""
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[[codegen.processor]]
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type = "types::st::VarInt<DB>"
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func = """
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uint64_t capacity = std::get<ParsedData::VarInt>(d.val).value;
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el.container_stats.emplace(result::Element::ContainerStats { .capacity = capacity });
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"""
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[[codegen.processor]]
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type = "types::st::VarInt<DB>"
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func = """
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bool sso = std::get<ParsedData::VarInt>(d.val).value;
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if (!sso)
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el.exclusive_size += el.container_stats->capacity * sizeof(T0);
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"""
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[[codegen.processor]]
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type = "types::st::VarInt<DB>"
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func = """
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el.container_stats->length = std::get<ParsedData::VarInt>(d.val).value;
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"""
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