TagBuilder: add Tag copy/move constructors
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@ -29,6 +29,31 @@
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#include <assert.h>
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#include <string.h>
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TagBuilder::TagBuilder(const Tag &other)
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:time(other.time), has_playlist(other.has_playlist)
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{
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items.reserve(other.num_items);
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tag_pool_lock.lock();
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for (unsigned i = 0, n = other.num_items; i != n; ++i)
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items.push_back(tag_pool_dup_item(other.items[i]));
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tag_pool_lock.unlock();
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}
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TagBuilder::TagBuilder(Tag &&other)
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:time(other.time), has_playlist(other.has_playlist)
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{
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/* move all TagItem pointers from the Tag object; we don't
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need to contact the tag pool, because all we do is move
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references */
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std::copy_n(other.items, other.num_items, std::back_inserter(items));
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/* discard the pointers from the Tag object */
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other.num_items = 0;
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delete[] other.items;
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other.items = nullptr;
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}
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void
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TagBuilder::Clear()
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{
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@ -65,6 +65,9 @@ public:
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TagBuilder(const TagBuilder &other) = delete;
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TagBuilder &operator=(const TagBuilder &other) = delete;
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TagBuilder(const Tag &other);
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TagBuilder(Tag &&other);
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/**
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* Returns true if the tag contains no items. This ignores the "time"
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* attribute.
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