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#include "search/search_query_params.hpp"
#include "indexer/feature_impl.hpp"
#include "indexer/scales.hpp"
#include "base/assert.hpp"
#include "std/algorithm.hpp"
namespace search
{
namespace
{
class DoAddStreetSynonyms
{
public:
DoAddStreetSynonyms(SearchQueryParams & params) : m_params(params) {}
void operator()(SearchQueryParams::TString const & s, size_t i)
{
if (s.size() > 2)
return;
string const ss = strings::ToUtf8(strings::MakeLowerCase(s));
// All synonyms should be lowercase!
if (ss == "n")
AddSym(i, "north");
if (ss == "w")
AddSym(i, "west");
if (ss == "s")
AddSym(i, "south");
if (ss == "e")
AddSym(i, "east");
if (ss == "nw")
AddSym(i, "northwest");
if (ss == "ne")
AddSym(i, "northeast");
if (ss == "sw")
AddSym(i, "southwest");
if (ss == "se")
AddSym(i, "southeast");
}
private:
SearchQueryParams::TSynonymsVector & GetSyms(size_t i) const
{
size_t const count = m_params.m_tokens.size();
if (i < count)
return m_params.m_tokens[i];
ASSERT_EQUAL(i, count, ());
return m_params.m_prefixTokens;
}
void AddSym(size_t i, string const & sym) { GetSyms(i).push_back(strings::MakeUniString(sym)); }
SearchQueryParams & m_params;
};
} // namespace
SearchQueryParams::SearchQueryParams() : m_scale(scales::GetUpperScale()) {}
void SearchQueryParams::Clear()
{
m_tokens.clear();
m_prefixTokens.clear();
m_langs.clear();
m_scale = scales::GetUpperScale();
}
void SearchQueryParams::EraseTokens(vector<size_t> & eraseInds)
{
eraseInds.erase(unique(eraseInds.begin(), eraseInds.end()), eraseInds.end());
ASSERT(is_sorted(eraseInds.begin(), eraseInds.end()), ());
// fill temporary vector
vector<TSynonymsVector> newTokens;
size_t skipI = 0;
size_t const count = m_tokens.size();
size_t const eraseCount = eraseInds.size();
for (size_t i = 0; i < count; ++i)
{
if (skipI < eraseCount && eraseInds[skipI] == i)
++skipI;
else
newTokens.push_back(move(m_tokens[i]));
}
// assign to m_tokens
newTokens.swap(m_tokens);
if (skipI < eraseCount)
{
// it means that we need to skip prefix tokens
ASSERT_EQUAL(skipI + 1, eraseCount, (eraseInds));
ASSERT_EQUAL(eraseInds[skipI], count, (eraseInds));
m_prefixTokens.clear();
}
}
void SearchQueryParams::ProcessAddressTokens()
{
// Erases all number tokens.
// Assumes that USA street name numbers are end with "st, nd, rd, th" suffixes.
vector<size_t> toErase;
ForEachToken([&toErase](SearchQueryParams::TString const & s, size_t i)
{
if (feature::IsNumber(s))
toErase.push_back(i);
});
EraseTokens(toErase);
// Adds synonyms for N, NE, NW, etc.
ForEachToken(DoAddStreetSynonyms(*this));
}
template <class ToDo>
void SearchQueryParams::ForEachToken(ToDo && toDo)
{
size_t const count = m_tokens.size();
for (size_t i = 0; i < count; ++i)
{
ASSERT(!m_tokens[i].empty(), ());
ASSERT(!m_tokens[i].front().empty(), ());
toDo(m_tokens[i].front(), i);
}
if (!m_prefixTokens.empty())
{
ASSERT(!m_prefixTokens.front().empty(), ());
toDo(m_prefixTokens.front(), count);
}
}
} // namespace search
string DebugPrint(search::SearchQueryParams const & params)
{
ostringstream os;
os << "SearchQueryParams [ m_tokens=" << DebugPrint(params.m_tokens)
<< ", m_prefixTokens=" << DebugPrint(params.m_prefixTokens) << "]";
return os.str();
}
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