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Diffstat (limited to 'indra/llcommon/llsdutil.h')
| -rw-r--r-- | indra/llcommon/llsdutil.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h index 38bbe19ddd..4d65059fe6 100644 --- a/indra/llcommon/llsdutil.h +++ b/indra/llcommon/llsdutil.h @@ -553,6 +553,44 @@ LLSD shallow(LLSD value, LLSD filter=LLSD()) { return llsd_shallow(value, filter } // namespace llsd +/***************************************************************************** +* LLSDParam<std::vector<T>> +*****************************************************************************/ +// Given an LLSD array, return a const std::vector<T>&, where T is a type +// supported by LLSDParam. Bonus: if the LLSD value is actually a scalar, +// return a single-element vector containing the converted value. +template <typename T> +class LLSDParam<std::vector<T>>: public LLSDParamBase +{ +public: + LLSDParam(const LLSD& array) + { + // treat undefined "array" as empty vector + if (array.isDefined()) + { + // what if it's a scalar? + if (! array.isArray()) + { + v.push_back(LLSDParam<T>(array)); + } + else // really is an array + { + // reserve space for the array entries + v.reserve(array.size()); + for (const auto& item : llsd::inArray(array)) + { + v.push_back(LLSDParam<T>(item)); + } + } + } + } + + operator const std::vector<T>&() const { return v; } + +private: + std::vector<T> v; +}; + // Specialization for generating a hash value from an LLSD block. namespace boost { |