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9992a4ae66
Makes InvokeMethod's reply a high-level response object, rather than binary data, matching the abstraction level of the class (and the other languages' implementations). In support of that: - Adds the logic to the codecs to decode response envelopes, which had never been implemented. - Adds a convience implementation of MethodResult that forwards to lambdas, so that one-off invocation handlers are easier to write. Also simplified BinaryMessenger's API so that subclasses only need to implement one version of Send, rather than two almost-identical versions. Fixes https://github.com/flutter/flutter/issues/53223
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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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 FLUTTER_SHELL_PLATFORM_COMMON_CPP_JSON_METHOD_CODEC_H_
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#define FLUTTER_SHELL_PLATFORM_COMMON_CPP_JSON_METHOD_CODEC_H_
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#include <rapidjson/document.h>
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#include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/method_call.h"
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#include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/method_codec.h"
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namespace flutter {
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// An implementation of MethodCodec that uses JSON strings as the serialization.
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class JsonMethodCodec : public MethodCodec<rapidjson::Document> {
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public:
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// Returns the shared instance of the codec.
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static const JsonMethodCodec& GetInstance();
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~JsonMethodCodec() = default;
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// Prevent copying.
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JsonMethodCodec(JsonMethodCodec const&) = delete;
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JsonMethodCodec& operator=(JsonMethodCodec const&) = delete;
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protected:
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// Instances should be obtained via GetInstance.
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JsonMethodCodec() = default;
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// |flutter::MethodCodec|
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std::unique_ptr<MethodCall<rapidjson::Document>> DecodeMethodCallInternal(
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const uint8_t* message,
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const size_t message_size) const override;
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// |flutter::MethodCodec|
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std::unique_ptr<std::vector<uint8_t>> EncodeMethodCallInternal(
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const MethodCall<rapidjson::Document>& method_call) const override;
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// |flutter::MethodCodec|
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std::unique_ptr<std::vector<uint8_t>> EncodeSuccessEnvelopeInternal(
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const rapidjson::Document* result) const override;
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// |flutter::MethodCodec|
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std::unique_ptr<std::vector<uint8_t>> EncodeErrorEnvelopeInternal(
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const std::string& error_code,
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const std::string& error_message,
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const rapidjson::Document* error_details) const override;
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// |flutter::MethodCodec|
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bool DecodeAndProcessResponseEnvelopeInternal(
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const uint8_t* response,
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const size_t response_size,
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MethodResult<rapidjson::Document>* result) const override;
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};
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} // namespace flutter
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#endif // FLUTTER_SHELL_PLATFORM_COMMON_CPP_JSON_METHOD_CODEC_H_
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