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✨ proposal for #428

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This implementation forwards the iterators to std::map::insert.
This commit is contained in:
Niels Lohmann
2017-04-07 18:29:09 +02:00
parent 90273e930c
commit 97a25de938
5 changed files with 150 additions and 1 deletions
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46
src/json.hpp
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@ -5978,6 +5978,52 @@ class basic_json
return result;
}
/*!
@brief inserts elements
Inserts elements from range `[first, last)`.
@param[in] first begin of the range of elements to insert
@param[in] last end of the range of elements to insert
@throw type_error.309 if called on JSON values other than objects; example:
`"cannot use insert() with string"`
@throw invalid_iterator.202 if iterator @a first or @a last does does not
point to an object; example: `"iterators first and last must point to
objects"`
@throw invalid_iterator.210 if @a first and @a last do not belong to the
same JSON value; example: `"iterators do not fit"`
@complexity Logarithmic: `O(N*log(size() + N))`, where `N` is the number
of elements to insert.
@liveexample{The example shows how `insert()` is used.,insert__range_object}
@since version 3.0.0
*/
void insert(const_iterator first, const_iterator last)
{
// insert only works for objects
if (not is_object())
{
JSON_THROW(type_error::create(309, "cannot use insert() with " + type_name()));
}
// check if range iterators belong to the same JSON object
if (first.m_object != last.m_object)
{
JSON_THROW(invalid_iterator::create(210, "iterators do not fit"));
}
// passed iterators must belong to objects
if (not first.m_object->is_object() or not first.m_object->is_object())
{
JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects"));
}
m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
}
/*!
@brief exchanges the values