forked from mirrors/gecko-dev
31ceef48aa
This avoid intermediate object tree for "JSON to principal" case. Differential Revision: https://phabricator.services.mozilla.com/D192146
96 lines
3 KiB
C++
96 lines
3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_SubsumedPrincipalJSONHandler_h
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#define mozilla_SubsumedPrincipalJSONHandler_h
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#include <stddef.h> // size_t
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#include <stdint.h> // uint32_t
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#include "js/TypeDecls.h" // JS::Latin1Char
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#include "mozilla/AlreadyAddRefed.h" // already_AddRefed
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#include "mozilla/Variant.h" // Variant
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#include "mozilla/RefPtr.h" // RefPtr
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#include "nsDebug.h" // NS_WARNING
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#include "BasePrincipal.h"
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#include "ContentPrincipalJSONHandler.h"
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#include "NullPrincipalJSONHandler.h"
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#include "SharedJSONHandler.h"
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namespace mozilla {
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class SubsumedPrincipalJSONHandlerTypes {
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public:
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enum class State {
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Init,
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// After the subsumed principal object's '{'.
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StartObject,
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// After the PrincipalKind property key for SystemPrincipal.
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SystemPrincipal_Key,
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// After the SystemPrincipal's inner object's '{'.
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SystemPrincipal_StartObject,
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// After the SystemPrincipal's inner object's '}'.
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SystemPrincipal_EndObject,
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// After the PrincipalKind property key for NullPrincipal or
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// ContentPrincipal, and also the entire inner object.
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// Delegates to mInnerHandler until the inner object's '}'.
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//
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// Unlike PrincipalJSONHandler, subsumed principal doesn't contain
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// ExpandedPrincipal.
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NullPrincipal_Inner,
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ContentPrincipal_Inner,
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// After the subsumed principal object's '}'.
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EndObject,
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Error,
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};
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using InnerHandlerT =
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Maybe<Variant<NullPrincipalJSONHandler, ContentPrincipalJSONHandler>>;
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static constexpr bool CanContainExpandedPrincipal = false;
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};
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// JSON parse handler for subsumed principal object inside ExpandedPrincipal's
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// new format.
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//
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// Subsumed principal object
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// |
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// ----------------------------------
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// | |
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// {"2": {"0": [{"1": {"0": https://mozilla.com"}}]}}
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// | | |
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// | ---------------------------
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// | |
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// | inner object
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// PrincipalKind
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//
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// For inner object except for the system principal case, this delegates
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// to NullPrincipalJSONHandler or ContentPrincipalJSONHandler.
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class SubsumedPrincipalJSONHandler
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: public ContainerPrincipalJSONHandler<SubsumedPrincipalJSONHandlerTypes> {
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using State = SubsumedPrincipalJSONHandlerTypes::State;
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using InnerHandlerT = SubsumedPrincipalJSONHandlerTypes::InnerHandlerT;
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public:
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SubsumedPrincipalJSONHandler() = default;
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virtual ~SubsumedPrincipalJSONHandler() = default;
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bool HasAccepted() const { return mState == State::EndObject; }
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protected:
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virtual void SetErrorState() override { mState = State::Error; }
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};
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} // namespace mozilla
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#endif // mozilla_SubsumedPrincipalJSONHandler_h
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