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Please, read this doc
Example:
// sendCoin(address,uint) --> Keccak-256 --> first 4 bytes --> 38f633e9
function sendCoin(address receiver, uint amount) public returns(bool sufficient) {
if (balances[msg.sender] < amount) return false;
balances[msg.sender] -= amount;
balances[receiver] += amount;
emit Transfer(msg.sender, receiver, amount);
return true;
}serializeAddress : 82006530 simple send tx: 413868
We have +19814% gas use compare to a simple send transaction when serializing address from address to cbor format.
|------------------------------------|----------------------|
| Call | Gas used |
|------------------------------------|----------------------|
| serializeAddSigner (CBOR contract) | 107,072,567 |
| serializeAddress (CBOR contract) | 82,175,116 |
| serializeBool (CBOR contract) | 14,151,467 |
| getBalance (SimpleCoin contract) | 9,321,353 |
| ERC20 send (assemblyscript native) | 697,452 |
| Simple send (native) | 413,868 |
|------------------------------------|----------------------|
|------------------------------------|----------------------|
| Call | Gas used |
|------------------------------------|----------------------|
| serializeAddSigner (CBOR contract) | 13,922,379 |
| serializeAddress (CBOR contract) | 11,341,547 |
| serializeBool (CBOR contract) | 3,719,855 |
| getBalance (SimpleCoin contract) | 3,356,533 |
|------------------------------------|----------------------|
|------------------------------------|----------------------|
| Call | Gas used |
|------------------------------------|----------------------|
| serializeAddSigner (CBOR contract) | 14,602,887 |
| serializeAddress (CBOR contract) | 11,930,295 |
| serializeBool (CBOR contract) | 4,042,787 |
| getBalance (SimpleCoin contract) | 3,665,937 |
|------------------------------------|----------------------|
b10d18b8 -> serializeAddSigner(address,bool)
$ ./lotus chain create-evm-actor CborTest.bin
sending message...
waiting for message to execute...
ID Address: t01056
Robust Address: t2dn7qowffhiygdmba3hsum6roquyhhqrh4y74rbq
Return: gkMAoAhVAht/B1ilOjBhsCDZ5UZ6LoUwc8In
$ ./lotus chain invoke-evm-actor t01056 b10d18b8 00000000000000000000000000000000000000000000000000000000000000640000000000000000000000000000000000000000000000000000000000000001
sending message...
waiting for message to execute...
0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000582420064f5000000000000000000000000000000000000000000000000000000
$ ./lotus state list-messages --to t01056
{
"Version": 0,
"To": "t01056",
"From": "t3q4pntto27catfcuo5kj672pvjicabkyjoqavbovles2hb462z7r6oiukvd6lhs6skfss4vbytn4uffkodgma",
"Nonce": 165,
"Value": "0",
"GasLimit": 133834208,
"GasFeeCap": "101727",
"GasPremium": "100673",
"Method": 2,
"Params": "gVhEsQ0YuAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABkAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE=",
"CID": {
"/": "bafy2bzacecf2ndxvisedvijglbwt2rmqwczcc4jmlqg2qizdjuikqeiecbhec"
}
}
$ ./lotus state search-msg bafy2bzacecf2ndxvisedvijglbwt2rmqwczcc4jmlqg2qizdjuikqeiecbhec
Executed in tipset: [bafy2bzacecbwmbw2pabgupmzv34fqmskszvgpsntzqvj7yq3xawukg6tjyfea]
Exit Code: 0
Gas Used: 107072567
Return: 0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000582420064f5000000000000000000000000000000000000000000000000000000
ERROR: method 2 not found on actor bafk2bzacecvnas7szvqytqj2iwkl3zmhdc5snv7wj3emfrh64qefcgdclpcgo
You then can do the same for all the function in build/CborTest.signatures.