How to call another function (A contract ) by (B contract) on chain

[yue1823]

Discord user ID

.yue.

Describe your question in detail.

I want to use a function by another contract (but i don't have it original code just know how to use)
how to call this function on my own contract on chain
(A contract - fun ) (B contract - mine)
is aptos allow directly call A-fun from B ?

not using SDK , "from move "

What error, if any, are you getting?

No response

What have you tried or looked at? Or how can we reproduce the error?

think?

Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

N/A

Describe your environment or tooling in detail

No response

[Cobtech]

ok

[adityaaggarwal12]

Hey Yue,

If the source code for a module is not available, you can use the contract's bytecode as a dependency to utilize its functions in your module.

To download the contract's bytecode, use the following command:

aptos move download --bytecode --account <account_address_where_contract_is_deployed> --package <package_name>

After downloading, add the downloaded folder as a dependency in your Move.toml. This will allow you to use the contract's public functions in your module.

Additionally, you can decompile the bytecode using this command:

aptos move decompile --package-path <path_to_folder_with_.mv_files>

For more detailed guidance, you can follow this official guide.

[yue1823]

may I ask how to add dependency to Move.toml ?

-diff (mine)
| sources
| Move.toml
-Liquidswap. (downaload)
| sources
|Move.toml

I want ask what should I add dependency on move.toml

[dependencies]
liquidswap = { local = "../Liquidswap", addr_subst = { "liquidswap" ="0x190d } }
I put this one on diff - move.toml
is this right ?

[adityaaggarwal12]

Yep, that looks fine!, Adding the dependency like that should work.

[Alexzander-Stone]

Hey @yue1823, you can see active usage of third party dependencies here.
Specifically, this Move.toml will contain examples of sourcing from both a local file (PancakeSwap) and a git repo (Liquidswap).