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Modernize integer comparison (#4577)

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Replace static_cast<size_t>(-1) with std::numeric_limits<std::size_t>::max()
via the detail::unknown_size() function
This commit is contained in:
Michael Valladolid
2025-01-02 01:01:38 +09:00
committed by GitHub
parent 2134cb947a
commit 4f64d8d0b4
5 changed files with 52 additions and 42 deletions
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47
single_include/nlohmann/json.hpp
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@ -8677,6 +8677,11 @@ struct json_sax
namespace detail
{
constexpr std::size_t unknown_size()
{
return (std::numeric_limits<std::size_t>::max)();
}
/*!
@brief SAX implementation to create a JSON value from SAX events
@ -8774,7 +8779,7 @@ class json_sax_dom_parser
}
#endif
if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
{
JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
}
@ -8823,7 +8828,7 @@ class json_sax_dom_parser
}
#endif
if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
{
JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
}
@ -9091,7 +9096,7 @@ class json_sax_dom_callback_parser
#endif
// check object limit
if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
{
JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
}
@ -9189,7 +9194,7 @@ class json_sax_dom_callback_parser
#endif
// check array limit
if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
{
JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
}
@ -9478,7 +9483,7 @@ class json_sax_acceptor
return true;
}
bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
bool start_object(std::size_t /*unused*/ = detail::unknown_size())
{
return true;
}
@ -9493,7 +9498,7 @@ class json_sax_acceptor
return true;
}
bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
bool start_array(std::size_t /*unused*/ = detail::unknown_size())
{
return true;
}
@ -9825,7 +9830,7 @@ class binary_reader
std::int32_t document_size{};
get_number<std::int32_t, true>(input_format_t::bson, document_size);
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(detail::unknown_size())))
{
return false;
}
@ -10047,7 +10052,7 @@ class binary_reader
std::int32_t document_size{};
get_number<std::int32_t, true>(input_format_t::bson, document_size);
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(detail::unknown_size())))
{
return false;
}
@ -10307,7 +10312,7 @@ class binary_reader
}
case 0x9F: // array (indefinite length)
return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
return get_cbor_array(detail::unknown_size(), tag_handler);
// map (0x00..0x17 pairs of data items follow)
case 0xA0:
@ -10361,7 +10366,7 @@ class binary_reader
}
case 0xBF: // map (indefinite length)
return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
return get_cbor_object(detail::unknown_size(), tag_handler);
case 0xC6: // tagged item
case 0xC7:
@ -10749,7 +10754,7 @@ class binary_reader
}
/*!
@param[in] len the length of the array or static_cast<std::size_t>(-1) for an
@param[in] len the length of the array or detail::unknown_size() for an
array of indefinite size
@param[in] tag_handler how CBOR tags should be treated
@return whether array creation completed
@ -10762,7 +10767,7 @@ class binary_reader
return false;
}
if (len != static_cast<std::size_t>(-1))
if (len != detail::unknown_size())
{
for (std::size_t i = 0; i < len; ++i)
{
@ -10787,7 +10792,7 @@ class binary_reader
}
/*!
@param[in] len the length of the object or static_cast<std::size_t>(-1) for an
@param[in] len the length of the object or detail::unknown_size() for an
object of indefinite size
@param[in] tag_handler how CBOR tags should be treated
@return whether object creation completed
@ -10803,7 +10808,7 @@ class binary_reader
if (len != 0)
{
string_t key;
if (len != static_cast<std::size_t>(-1))
if (len != detail::unknown_size())
{
for (std::size_t i = 0; i < len; ++i)
{
@ -12221,7 +12226,7 @@ class binary_reader
}
else
{
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(detail::unknown_size())))
{
return false;
}
@ -12299,7 +12304,7 @@ class binary_reader
}
else
{
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(detail::unknown_size())))
{
return false;
}
@ -12635,7 +12640,7 @@ class binary_reader
}
private:
static JSON_INLINE_VARIABLE constexpr std::size_t npos = static_cast<std::size_t>(-1);
static JSON_INLINE_VARIABLE constexpr std::size_t npos = detail::unknown_size();
/// input adapter
InputAdapterType ia;
@ -12905,7 +12910,7 @@ class parser
{
case token_type::begin_object:
{
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_object(detail::unknown_size())))
{
return false;
}
@ -12950,7 +12955,7 @@ class parser
case token_type::begin_array:
{
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
if (JSON_HEDLEY_UNLIKELY(!sax->start_array(detail::unknown_size())))
{
return false;
}
@ -20606,10 +20611,10 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
return it;
}
reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
reference set_parent(reference j, std::size_t old_capacity = detail::unknown_size())
{
#if JSON_DIAGNOSTICS
if (old_capacity != static_cast<std::size_t>(-1))
if (old_capacity != detail::unknown_size())
{
// see https://github.com/nlohmann/json/issues/2838
JSON_ASSERT(type() == value_t::array);