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Extend ArgLists to support serialization/deserialization in third-party components #389

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Sep 27, 2016
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Extend ArgLists to support serialization/deserialization in third-party components #389

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14 changes: 10 additions & 4 deletions fmt/format.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1377,10 +1377,7 @@ class ArgList {
};

internal::Arg::Type type(unsigned index) const {
unsigned shift = index * 4;
uint64_t mask = 0xf;
return static_cast<internal::Arg::Type>(
(types_ & (mask << shift)) >> shift);
return type(types_, index);
}

template <typename Char>
Expand All @@ -1397,6 +1394,8 @@ class ArgList {
ArgList(ULongLong types, const internal::Arg *args)
: types_(types), args_(args) {}

uint64_t types() const { return types_; }

/** Returns the argument at specified index. */
internal::Arg operator[](unsigned index) const {
using internal::Arg;
Expand All @@ -1422,6 +1421,13 @@ class ArgList {
}
return args_[index];
}

static internal::Arg::Type type(uint64_t types, unsigned index) {
unsigned shift = index * 4;
uint64_t mask = 0xf;
return static_cast<internal::Arg::Type>(
(types & (mask << shift)) >> shift);
}
};

#define FMT_DISPATCH(call) static_cast<Impl*>(this)->call
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