1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/attribution_reporting/aggregatable_named_budget_pair.h"
#include <optional>
#include "base/check.h"
#include "base/numerics/checked_math.h"
#include "components/attribution_reporting/aggregatable_utils.h"
namespace content {
namespace {
bool IsValid(int original_budget, int remaining_budget) {
return attribution_reporting::IsAggregatableBudgetInRange(original_budget) &&
attribution_reporting::IsAggregatableBudgetInRange(remaining_budget) &&
remaining_budget <= original_budget;
}
} // namespace
// static
std::optional<AggregatableNamedBudgetPair> AggregatableNamedBudgetPair::Create(
int original_budget,
int remaining_budget) {
if (!IsValid(original_budget, remaining_budget)) {
return std::nullopt;
}
return AggregatableNamedBudgetPair(original_budget, remaining_budget);
}
bool AggregatableNamedBudgetPair::SubtractRemainingBudget(int budget_consumed) {
return budget_consumed >= 0 && budget_consumed <= remaining_budget_ &&
base::CheckSub(remaining_budget_, budget_consumed)
.AssignIfValid(&remaining_budget_);
}
AggregatableNamedBudgetPair::AggregatableNamedBudgetPair(int original_budget,
int remaining_budget)
: original_budget_(original_budget), remaining_budget_(remaining_budget) {
CHECK(IsValid(original_budget_, remaining_budget_));
}
} // namespace content
|
