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/*************************************************************************
*
* Copyright 2016 Realm Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**************************************************************************/
#ifndef REALM_ARRAY_BOOL_HPP
#define REALM_ARRAY_BOOL_HPP
#include <realm/array.hpp>
namespace realm {
/// ArrayBool supports both nullable and non-nullable arrays with respect to
/// adding and inserting values. In this way we don't need to distinguish
/// between the two type when adding a row and when adding a column.
/// add, insert and getting of non-nullable values are taken care of by the
/// respective functions in Array.
class ArrayBool : public Array, public ArrayPayload {
public:
using value_type = bool;
using Array::Array;
using Array::init_from_ref;
using Array::init_from_parent;
using Array::update_parent;
using Array::get_ref;
using Array::size;
using Array::erase;
using Array::truncate_and_destroy_children;
static bool default_value(bool)
{
return false;
}
void create()
{
Array::create(type_Normal);
}
void init_from_ref(ref_type ref) noexcept override
{
Array::init_from_ref(ref);
}
void set_parent(ArrayParent* parent, size_t ndx_in_parent) noexcept override
{
Array::set_parent(parent, ndx_in_parent);
}
bool is_null(size_t) const
{
return false;
}
void set(size_t ndx, bool value)
{
Array::set(ndx, value ? 1 : 0);
}
bool get(size_t ndx) const
{
return Array::get(ndx) != 0;
}
Mixed get_any(size_t ndx) const override
{
return Mixed(get(ndx));
}
void add(bool value)
{
Array::add(value);
}
void insert(size_t ndx, bool value)
{
Array::insert(ndx, value);
}
size_t find_first(util::Optional<bool> value, size_t begin = 0, size_t end = npos) const noexcept
{
if (value) {
return Array::find_first(*value, begin, end);
}
else {
return Array::find_first(null_value, begin, end);
}
}
protected:
// We can still be in two bits as small values are considered unsigned
static constexpr int null_value = 3;
};
class ArrayBoolNull : public ArrayBool {
public:
using value_type = util::Optional<bool>;
using ArrayBool::ArrayBool;
static util::Optional<bool> default_value(bool nullable)
{
return nullable ? util::none : util::some<bool>(false);
}
void set(size_t ndx, util::Optional<bool> value)
{
if (value) {
Array::set(ndx, *value);
}
else {
Array::set(ndx, null_value);
}
}
void add(util::Optional<bool> value)
{
if (value) {
Array::add(*value);
}
else {
Array::add(null_value);
}
}
void insert(size_t ndx, util::Optional<bool> value)
{
if (value) {
Array::insert(ndx, *value);
}
else {
Array::insert(ndx, null_value);
}
}
Mixed get_any(size_t ndx) const override
{
return Mixed(get(ndx));
}
void set_null(size_t ndx)
{
Array::set(ndx, null_value);
}
bool is_null(size_t ndx) const
{
return Array::get(ndx) == null_value;
}
util::Optional<bool> get(size_t ndx) const
{
int64_t val = Array::get(ndx);
return (val == null_value) ? util::none : util::make_optional(val != 0);
}
};
}
#endif /* REALM_ARRAY_BOOL_HPP */
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