40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
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// Copyright 2019 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CRDTP_PARSER_HANDLER_H_
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#define CRDTP_PARSER_HANDLER_H_
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#include <cstdint>
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#include "span.h"
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#include "status.h"
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namespace crdtp {
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// Handler interface for parser events emitted by a streaming parser.
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// See cbor::NewCBOREncoder, cbor::ParseCBOR, json::NewJSONEncoder,
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// json::ParseJSON.
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class ParserHandler {
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public:
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virtual ~ParserHandler() = default;
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virtual void HandleMapBegin() = 0;
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virtual void HandleMapEnd() = 0;
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virtual void HandleArrayBegin() = 0;
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virtual void HandleArrayEnd() = 0;
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virtual void HandleString8(span<uint8_t> chars) = 0;
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virtual void HandleString16(span<uint16_t> chars) = 0;
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virtual void HandleBinary(span<uint8_t> bytes) = 0;
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virtual void HandleDouble(double value) = 0;
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virtual void HandleInt32(int32_t value) = 0;
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virtual void HandleBool(bool value) = 0;
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virtual void HandleNull() = 0;
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// The parser may send one error even after other events have already
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// been received. Client code is reponsible to then discard the
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// already processed events.
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// |error| must be an eror, as in, |error.is_ok()| can't be true.
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virtual void HandleError(Status error) = 0;
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};
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} // namespace crdtp
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#endif // CRDTP_PARSER_HANDLER_H_
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