Json to Tlv and Tlv to Json Converters Implementation in CPP

.github/.wordlist.txt

@@ -154,6 +154,7 @@ blocklist
 blockquote
 bluetoothd
 bluez
+BOOL
 BooleanState
 bootable
 Bootloader

scripts/tools/check_includes_config.py

@@ -158,4 +158,9 @@
     # Library meant for non-embedded
     'src/tracing/json/json_tracing.cpp': {'string', 'sstream'},
     'src/tracing/json/json_tracing.h': {'fstream'},
+
+    # Not intended for embedded clients
+    'src/lib/support/jsontlv/JsonToTlv.cpp': {'sstream'},
+    'src/lib/support/jsontlv/JsonToTlv.h': {'string'},
+    'src/lib/support/jsontlv/TlvToJson.h': {'string'}
 }

src/lib/core/TLVReader.h

@@ -855,6 +855,11 @@ class DLL_EXPORT TLVReader
      */
     TLVBackingStore * GetBackingStore() { return mBackingStore; }
 
+    /**
+     * Returns true if the current TLV element type is a double.
+     */
+    bool IsElementDouble() { return ElementType() == TLVElementType::FloatingPointNumber64; }
+
     /**
      * Gets the point in the underlying input buffer that corresponds to the reader's current position.
      *

src/lib/support/jsontlv/BUILD.gn

@@ -1,4 +1,4 @@
-# Copyright (c) 2020 Project CHIP Authors
+# Copyright (c) 2020-2023 Project CHIP Authors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,7 +19,18 @@ config("jsontlv_config") {
 }
 
 static_library("jsontlv") {
-  sources = [ "TlvJson.cpp" ]
+  sources = [
+    "ElementTypes.h",
+    "JsonToTlv.cpp",
+    "TlvJson.cpp",
+    "TlvToJson.cpp",
+  ]
+
+  public = [
+    "JsonToTlv.h",
+    "TlvJson.h",
+    "TlvToJson.h",
+  ]
 
   public_configs = [ ":jsontlv_config" ]
 

src/lib/support/jsontlv/ElementTypes.h

@@ -0,0 +1,43 @@
+/*
+ *
+ *    Copyright (c) 2023 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#include <lib/core/TLV.h>
+
+namespace {
+
+const char kElementTypeInt[]    = "INT";
+const char kElementTypeUInt[]   = "UINT";
+const char kElementTypeBool[]   = "BOOL";
+const char kElementTypeFloat[]  = "FLOAT";
+const char kElementTypeDouble[] = "DOUBLE";
+const char kElementTypeBytes[]  = "BYTES";
+const char kElementTypeString[] = "STRING";
+const char kElementTypeNull[]   = "NULL";
+const char kElementTypeStruct[] = "STRUCT";
+const char kElementTypeArray[]  = "ARRAY";
+const char kElementTypeEmpty[]  = "?";
+
+const char kFloatingPointPositiveInfinity[] = "Infinity";
+const char kFloatingPointNegativeInfinity[] = "-Infinity";
+
+struct ElementTypeContext
+{
+    chip::TLV::TLVType tlvType = chip::TLV::kTLVType_NotSpecified;
+    bool isDouble              = false;
+};
+
+} // namespace