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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "slime_filler_filter.h"
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <cassert>
namespace search::docsummary {
SlimeFillerFilter::Iterator::Iterator(bool should_render_in) noexcept
: _should_render(should_render_in),
_next()
{
}
SlimeFillerFilter::Iterator::Iterator(const SlimeFillerFilter* next) noexcept
: _should_render(true),
_next(next)
{
}
SlimeFillerFilter::Iterator
SlimeFillerFilter::Iterator::check_field(vespalib::stringref field_name) const
{
assert(_should_render);
return (_next != nullptr) ? _next->check_field(field_name) : SlimeFillerFilter::Iterator(true);
}
SlimeFillerFilter::SlimeFillerFilter()
: _filter()
{
}
SlimeFillerFilter::~SlimeFillerFilter() = default;
SlimeFillerFilter::Iterator
SlimeFillerFilter::check_field(vespalib::stringref field_name) const
{
auto itr = _filter.find(field_name);
if (itr == _filter.end()) {
// This field does not pass the filter -> should NOT be rendered.
return SlimeFillerFilter::Iterator(false);
}
// This field passes the filter -> should be rendered.
// We also keep track of the next filter in the hierarchy.
return SlimeFillerFilter::Iterator(itr->second.get());
}
SlimeFillerFilter::Iterator
SlimeFillerFilter::begin() const
{
return SlimeFillerFilter::Iterator(this);
}
bool
SlimeFillerFilter::empty() const { return _filter.empty(); }
SlimeFillerFilter&
SlimeFillerFilter::add(vespalib::stringref field_path)
{
vespalib::stringref field_name;
vespalib::stringref remaining_path;
auto dot_pos = field_path.find('.');
if (dot_pos != vespalib::string::npos) {
field_name = field_path.substr(0, dot_pos);
remaining_path = field_path.substr(dot_pos + 1);
} else {
field_name = field_path;
}
auto itr = _filter.find(field_name);
if (itr != _filter.end()) {
if (itr->second) {
if (remaining_path.empty()) {
itr->second.reset();
} else {
itr->second->add(remaining_path);
}
}
} else {
auto insres = _filter.insert(std::make_pair(field_name, std::unique_ptr<SlimeFillerFilter>()));
assert(insres.second);
if (!remaining_path.empty()) {
insres.first->second = std::make_unique<SlimeFillerFilter>();
insres.first->second->add(remaining_path);
}
}
return *this;
}
void
SlimeFillerFilter::add_remaining(std::unique_ptr<SlimeFillerFilter>& filter, vespalib::stringref field_path)
{
if (filter) {
auto dot_pos = field_path.find('.');
if (dot_pos != vespalib::string::npos) {
auto remaining_path = field_path.substr(dot_pos + 1);
if (!remaining_path.empty()) {
filter->add(remaining_path);
} else {
filter.reset();
}
} else {
filter.reset();
}
}
}
SlimeFillerFilter::Iterator
SlimeFillerFilter::all()
{
return SlimeFillerFilter::Iterator(true);
}
}
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