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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "current_index_setup.h"
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <cassert>
namespace search::expression {
void
CurrentIndexSetup::Usage::notify_unbound_struct_usage(vespalib::stringref name)
{
_unbound.insert(name);
}
CurrentIndexSetup::Usage::Usage()
: _unbound()
{
}
CurrentIndexSetup::Usage::~Usage() = default;
vespalib::stringref
CurrentIndexSetup::Usage::get_unbound_struct_name() const
{
assert(has_single_unbound_struct());
return *_unbound.begin();
}
CurrentIndexSetup::Usage::Bind::Bind(CurrentIndexSetup &setup, Usage &usage) noexcept
: _setup(setup)
{
auto prev = setup.capture(std::addressof(usage));
assert(prev == nullptr); // no nesting
}
CurrentIndexSetup::Usage::Bind::~Bind()
{
[[maybe_unused]] auto prev = _setup.capture(nullptr);
}
CurrentIndexSetup::CurrentIndexSetup()
: _bound(), _usage(nullptr)
{
}
CurrentIndexSetup::~CurrentIndexSetup() = default;
const CurrentIndex *
CurrentIndexSetup::resolve(vespalib::stringref field_name) const
{
size_t pos = field_name.rfind('.');
if (pos > field_name.size()) {
return nullptr;
}
auto struct_name = field_name.substr(0, pos);
auto entry = _bound.find(struct_name);
if (entry == _bound.end()) {
if (_usage != nullptr) {
_usage->notify_unbound_struct_usage(struct_name);
}
return nullptr;
}
return entry->second;
}
void
CurrentIndexSetup::bind(vespalib::stringref struct_name, const CurrentIndex &index)
{
auto res = _bound.insert(std::make_pair(vespalib::string(struct_name),
std::addressof(index)));
assert(res.second); // struct must be either bound or unbound
}
}
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