3 * Copyright (c) 2020 Project CHIP Authors
4 * Copyright (c) 2016-2017 Nest Labs, Inc.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 * This file defines AttributeStatusElement parser and builder in CHIP interaction model
26 #ifndef _CHIP_INTERACTION_MODEL_MESSAGE_DEF_ATTRIBUTE_STATUS_ELEMENT_H
27 #define _CHIP_INTERACTION_MODEL_MESSAGE_DEF_ATTRIBUTE_STATUS_ELEMENT_H
29 #include "AttributePath.h"
32 #include "StatusElement.h"
33 #include <core/CHIPCore.h>
34 #include <core/CHIPTLV.h>
35 #include <support/CodeUtils.h>
36 #include <support/logging/CHIPLogging.h>
37 #include <util/basic-types.h>
41 namespace AttributeStatusElement {
44 kCsTag_AttributePath = 0,
45 kCsTag_StatusElement = 1,
48 class Builder : public chip::app::Builder
52 * @brief Initialize a AttributeStatusElement::Builder for writing into a TLV stream
54 * @param [in] apWriter A pointer to TLVWriter
56 * @return #CHIP_NO_ERROR on success
58 CHIP_ERROR Init(chip::TLV::TLVWriter * const apWriter);
61 * @brief Initialize a AttributePath::Builder for writing into the TLV stream
63 * @return A reference to AttributePath::Builder
65 AttributePath::Builder & CreateAttributePathBuilder();
68 * @brief Initialize a StatusElement::Builder for writing into the TLV stream
70 * @return A reference to StatusElement::Builder
72 StatusElement::Builder & CreateStatusElementBuilder();
75 * @brief Mark the end of this AttributeStatusElement
77 * @return A reference to *this
79 AttributeStatusElement::Builder & EndOfAttributeStatusElement();
82 AttributePath::Builder mAttributePathBuilder;
83 StatusElement::Builder mStatusElementBuilder;
86 class Parser : public chip::app::Parser
90 * @brief Initialize the parser object with TLVReader
92 * @param [in] aReader A pointer to a TLVReader, which should point to the beginning of this AttributeStatusElement
94 * @return #CHIP_NO_ERROR on success
96 CHIP_ERROR Init(const chip::TLV::TLVReader & aReader);
99 * @brief Roughly verify the message is correctly formed
100 * 1) all mandatory tags are present
101 * 2) all elements have expected data type
102 * 3) any tag can only appear once
103 * 4) At the top level of the structure, unknown tags are ignored for forward compatibility
104 * @note The main use of this function is to print out what we're
105 * receiving during protocol development and debugging.
106 * The encoding rule has changed in IM encoding spec so this
107 * check is only "roughly" conformant now.
109 * @return #CHIP_NO_ERROR on success
111 CHIP_ERROR CheckSchemaValidity() const;
114 * @brief Get a TLVReader for the AttributePath. Next() must be called before accessing them.
116 * @param [in] apAttributePath A pointer to apAttributePath
118 * @return #CHIP_NO_ERROR on success
119 * #CHIP_ERROR_WRONG_TLV_TYPE if there is such element but it's not a Path
120 * #CHIP_END_OF_TLV if there is no such element
122 CHIP_ERROR GetAttributePath(AttributePath::Parser * const apAttributePath) const;
125 * @brief Get a TLVReader for the StatusElement. Next() must be called before accessing them.
127 * @param [in] apStatusElement A pointer to apStatusElement
129 * @return #CHIP_NO_ERROR on success
130 * #CHIP_ERROR_WRONG_TLV_TYPE if there is such element but it's not a Path
131 * #CHIP_END_OF_TLV if there is no such element
133 CHIP_ERROR GetStatusElement(StatusElement::Parser * const apStatusElement) const;
135 }; // namespace AttributeStatusElement
140 #endif // _CHIP_INTERACTION_MODEL_MESSAGE_DEF_ATTRIBUTE_STATUS_ELEMENT_H