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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Client.h"
namespace mozilla {
namespace dom {
namespace quota {
namespace {
const char kIDBPrefix = 'I';
const char kDOMCachePrefix = 'C';
const char kSDBPrefix = 'S';
const char kLSPrefix = 'L';
template <Client::Type type>
struct ClientTypeTraits;
template <>
struct ClientTypeTraits<Client::Type::IDB> {
template <typename T>
static void To(T& aData) {
aData.AssignLiteral(IDB_DIRECTORY_NAME);
}
static void To(char& aData) { aData = kIDBPrefix; }
template <typename T>
static bool From(const T& aData) {
return aData.EqualsLiteral(IDB_DIRECTORY_NAME);
}
static bool From(char aData) { return aData == kIDBPrefix; }
};
template <>
struct ClientTypeTraits<Client::Type::DOMCACHE> {
template <typename T>
static void To(T& aData) {
aData.AssignLiteral(DOMCACHE_DIRECTORY_NAME);
}
static void To(char& aData) { aData = kDOMCachePrefix; }
template <typename T>
static bool From(const T& aData) {
return aData.EqualsLiteral(DOMCACHE_DIRECTORY_NAME);
}
static bool From(char aData) { return aData == kDOMCachePrefix; }
};
template <>
struct ClientTypeTraits<Client::Type::SDB> {
template <typename T>
static void To(T& aData) {
aData.AssignLiteral(SDB_DIRECTORY_NAME);
}
static void To(char& aData) { aData = kSDBPrefix; }
template <typename T>
static bool From(const T& aData) {
return aData.EqualsLiteral(SDB_DIRECTORY_NAME);
}
static bool From(char aData) { return aData == kSDBPrefix; }
};
template <>
struct ClientTypeTraits<Client::Type::LS> {
template <typename T>
static void To(T& aData) {
aData.AssignLiteral(LS_DIRECTORY_NAME);
}
static void To(char& aData) { aData = kLSPrefix; }
template <typename T>
static bool From(const T& aData) {
return aData.EqualsLiteral(LS_DIRECTORY_NAME);
}
static bool From(char aData) { return aData == kLSPrefix; }
};
template <typename T>
bool TypeTo_impl(Client::Type aType, T& aData) {
switch (aType) {
case Client::IDB:
ClientTypeTraits<Client::Type::IDB>::To(aData);
return true;
case Client::DOMCACHE:
ClientTypeTraits<Client::Type::DOMCACHE>::To(aData);
return true;
case Client::SDB:
ClientTypeTraits<Client::Type::SDB>::To(aData);
return true;
case Client::LS:
if (CachedNextGenLocalStorageEnabled()) {
ClientTypeTraits<Client::Type::LS>::To(aData);
return true;
}
[[fallthrough]];
case Client::TYPE_MAX:
default:
return false;
}
MOZ_CRASH("Should never get here!");
}
template <typename T>
bool TypeFrom_impl(const T& aData, Client::Type& aType) {
if (ClientTypeTraits<Client::Type::IDB>::From(aData)) {
aType = Client::IDB;
return true;
}
if (ClientTypeTraits<Client::Type::DOMCACHE>::From(aData)) {
aType = Client::DOMCACHE;
return true;
}
if (ClientTypeTraits<Client::Type::SDB>::From(aData)) {
aType = Client::SDB;
return true;
}
if (CachedNextGenLocalStorageEnabled() &&
ClientTypeTraits<Client::Type::LS>::From(aData)) {
aType = Client::LS;
return true;
}
return false;
}
void BadType() { MOZ_CRASH("Bad client type value!"); }
} // namespace
// static
bool Client::IsValidType(Type aType) {
switch (aType) {
case Client::IDB:
case Client::DOMCACHE:
case Client::SDB:
return true;
case Client::LS:
if (CachedNextGenLocalStorageEnabled()) {
return true;
}
[[fallthrough]];
default:
return false;
}
}
// static
bool Client::TypeToText(Type aType, nsAString& aText, const fallible_t&) {
nsString text;
if (!TypeTo_impl(aType, text)) {
return false;
}
aText = text;
return true;
}
// static
void Client::TypeToText(Type aType, nsAString& aText) {
if (!TypeTo_impl(aType, aText)) {
BadType();
}
}
// static
void Client::TypeToText(Type aType, nsACString& aText) {
if (!TypeTo_impl(aType, aText)) {
BadType();
}
}
// static
bool Client::TypeFromText(const nsAString& aText, Type& aType,
const fallible_t&) {
Type type;
if (!TypeFrom_impl(aText, type)) {
return false;
}
aType = type;
return true;
}
// static
Client::Type Client::TypeFromText(const nsACString& aText) {
Type type;
if (!TypeFrom_impl(aText, type)) {
BadType();
}
return type;
}
// static
char Client::TypeToPrefix(Type aType) {
char prefix;
if (!TypeTo_impl(aType, prefix)) {
BadType();
}
return prefix;
}
// static
bool Client::TypeFromPrefix(char aPrefix, Type& aType, const fallible_t&) {
Type type;
if (!TypeFrom_impl(aPrefix, type)) {
return false;
}
aType = type;
return true;
}
} // namespace quota
} // namespace dom
} // namespace mozilla