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Remove unused (and broken) functionality in SpanReader

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This removes the ability to set an offset in the SpanReader constructor,
as the current code is broken. All call sites use pos=0, so it is actually
unused. If future call sites need it, SpanReader{a, b, c, d} is equivalent
to SpanReader{a, b, c.subspan(d)}.

It also removes the ability to deserialize from SpanReader directly from
the constructor. This too is unused, and can be more idiomatically
simulated using (SpanReader{a, b, c} >> x >> y >> z) instead of
SpanReader{a, b, c, x, y, z}.
This commit is contained in:
Pieter Wuille
2021-12-06 15:45:38 -05:00
parent 786ffb3ae4
commit 31ba1af74a
8 changed files with 16 additions and 35 deletions
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4
src/blockfilter.cpp
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@@ -81,7 +81,7 @@ GCSFilter::GCSFilter(const Params& params)
GCSFilter::GCSFilter(const Params& params, std::vector<unsigned char> encoded_filter)
: m_params(params), m_encoded(std::move(encoded_filter))
{
SpanReader stream{GCS_SER_TYPE, GCS_SER_VERSION, m_encoded, 0};
SpanReader stream{GCS_SER_TYPE, GCS_SER_VERSION, m_encoded};
uint64_t N = ReadCompactSize(stream);
m_N = static_cast<uint32_t>(N);
@@ -133,7 +133,7 @@ GCSFilter::GCSFilter(const Params& params, const ElementSet& elements)
bool GCSFilter::MatchInternal(const uint64_t* element_hashes, size_t size) const
{
SpanReader stream{GCS_SER_TYPE, GCS_SER_VERSION, m_encoded, 0};
SpanReader stream{GCS_SER_TYPE, GCS_SER_VERSION, m_encoded};
// Seek forward by size of N
uint64_t N = ReadCompactSize(stream);