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Merge pull request #206 from pah/enhance/optimize-value-copy

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GenericValue: improve copying performance
This commit is contained in:
Milo Yip 2014-11-28 11:24:12 +08:00
commit 7eee4303c7
1 changed files with 20 additions and 3 deletions
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23
include/rapidjson/document.h
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@ -1896,9 +1896,26 @@ template <typename SourceAllocator>
inline
GenericValue<Encoding,Allocator>::GenericValue(const GenericValue<Encoding,SourceAllocator>& rhs, Allocator& allocator)
{
GenericDocument<Encoding,Allocator> d(&allocator);
rhs.Accept(d);
RawAssign(*d.stack_.template Pop<GenericValue>(1));
switch (rhs.GetType()) {
case kObjectType:
case kArrayType: { // perform deep copy via SAX Handler
GenericDocument<Encoding,Allocator> d(&allocator);
rhs.Accept(d);
RawAssign(*d.stack_.template Pop<GenericValue>(1));
}
break;
case kStringType:
if (rhs.flags_ == kConstStringFlag) {
flags_ = rhs.flags_;
data_ = *reinterpret_cast<const Data*>(&rhs.data_);
} else {
SetStringRaw(StringRef(rhs.GetString(), rhs.GetStringLength()), allocator);
}
break;
default: // kNumberType, kTrueType, kFalseType, kNullType
flags_ = rhs.flags_;
data_ = *reinterpret_cast<const Data*>(&rhs.data_);
}
}
RAPIDJSON_NAMESPACE_END