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[message] add new flavors of Read/Write/Append/Prepend methods (#5604)

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This commit adds new helper methods in `Message` class. It adds new
template methods to allow an object (of any type) to be read from or
written/appended/prepended to the message. The `Read<ObjectType>()`
method returns a parse `otError` if there are not enough bytes
remaining in the message to read the entire object.

The template methods are used in other core modules which help
simplify the code (there is no need to specify the template type since
it can be deduced by the complier from the passed-in argument). Also
since the template methods directly use the `sizeof` the object type,
they help reduce the chance of incorrect use (using incorrect
read/write length when calling the method).

This commit also updates and renames the methods which read/write raw
bytes from/to the message to `ReadBytes()`/`WriteBytes()`. The order
of parameters in these methods are changed to follow the common
pattern used by other modules and the OT public APIs (i.e., the
pointer to the buffer is given first, followed by its length).
This commit is contained in:
Abtin Keshavarzian
2020-10-03 08:28:42 -07:00
committed by GitHub
parent 0becde2952
commit 1f40793255
57 changed files with 461 additions and 423 deletions
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tests/unit/test_spinel_buffer.cpp
+5 -5
View File
@@ -179,7 +179,7 @@ void WriteTestFrame1(Spinel::Buffer &aNcpBuffer, Spinel::Buffer::Priority aPrior
message = sMessagePool->New(Message::kTypeIp6, 0);
VerifyOrQuit(message != nullptr, "Null Message");
SuccessOrQuit(message->SetLength(sizeof(sMottoText)), "Could not set the length of message.");
message->Write(0, sizeof(sMottoText), sMottoText);
message->Write(0, sMottoText);
oldContext = sContext;
aNcpBuffer.InFrameBegin(aPriority);
@@ -223,12 +223,12 @@ void WriteTestFrame2(Spinel::Buffer &aNcpBuffer, Spinel::Buffer::Priority aPrior
message1 = sMessagePool->New(Message::kTypeIp6, 0);
VerifyOrQuit(message1 != nullptr, "Null Message");
SuccessOrQuit(message1->SetLength(sizeof(sMysteryText)), "Could not set the length of message.");
message1->Write(0, sizeof(sMysteryText), sMysteryText);
message1->Write(0, sMysteryText);
message2 = sMessagePool->New(Message::kTypeIp6, 0);
VerifyOrQuit(message2 != nullptr, "Null Message");
SuccessOrQuit(message2->SetLength(sizeof(sHelloText)), "Could not set the length of message.");
message2->Write(0, sizeof(sHelloText), sHelloText);
message2->Write(0, sHelloText);
aNcpBuffer.InFrameBegin(aPriority);
SuccessOrQuit(aNcpBuffer.InFrameFeedMessage(message1), "InFrameFeedMessage() failed.");
@@ -529,7 +529,7 @@ void TestBuffer(void)
message = sMessagePool->New(Message::kTypeIp6, 0);
VerifyOrQuit(message != nullptr, "Null Message");
SuccessOrQuit(message->SetLength(sizeof(sMysteryText)), "Could not set the length of message.");
message->Write(0, sizeof(sMysteryText), sMysteryText);
message->Write(0, sMysteryText);
SuccessOrQuit(ncpBuffer.InFrameFeedMessage(message), "InFrameFeedMessage() failed.");
@@ -734,7 +734,7 @@ void TestBuffer(void)
message = sMessagePool->New(Message::kTypeIp6, 0);
VerifyOrQuit(message != nullptr, "Null Message");
SuccessOrQuit(message->SetLength(sizeof(sMysteryText)), "Could not set the length of message.");
message->Write(0, sizeof(sMysteryText), sMysteryText);
message->Write(0, sMysteryText);
VerifyOrQuit(ncpBuffer.InFrameFeedMessage(message) == OT_ERROR_INVALID_STATE, "Incorrect error status");
message->Free();
VerifyOrQuit(ncpBuffer.InFrameEnd() == OT_ERROR_INVALID_STATE, "Incorrect error status");