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[Feature] Identifier nft add borrow function #34

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merged 9 commits into from
Jun 13, 2022
Merged

[Feature] Identifier nft add borrow function #34

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47b2530
add IdentifierNFT borrow
Jun 10, 2022
b03db78
update &mut
Jun 10, 2022
4500ccd
add BorrowIdentifierNFT
Jun 10, 2022
5c44ead
add borrow_nft
Jun 10, 2022
d3d984a
modify borrow_back parameter
Jun 10, 2022
d99c1fd
add test and add add notes
Jun 13, 2022
bc100c4
fix diff
Jun 13, 2022
fe9123d
Modify BorrowNFT Notes
Jun 13, 2022
e2720ab
fix all checks
Jun 13, 2022
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53 changes: 52 additions & 1 deletion sources/NFT.move
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Original file line number Diff line number Diff line change
Expand Up @@ -556,13 +556,14 @@ module NFT {
/// The NFT can not been transfer by owner.
module IdentifierNFT {
use StarcoinFramework::Option::{Self, Option};
use StarcoinFramework::NFT::{Self, NFT, MintCapability, BurnCapability};
use StarcoinFramework::NFT::{Self, NFT, MintCapability, BurnCapability, UpdateCapability};
use StarcoinFramework::Signer;
use StarcoinFramework::Errors;

const ERR_NFT_EXISTS: u64 = 101;
const ERR_NFT_NOT_EXISTS: u64 = 102;
const ERR_NFT_NOT_ACCEPT: u64 = 103;
const ERR_BORROW_ADDR_NOT_SAME: u64 = 104;

spec module {
pragma verify = false;
Expand All @@ -572,6 +573,11 @@ module IdentifierNFT {
nft: Option<NFT<NFTMeta, NFTBody>>,
}

struct BorrowIdentifierNFT<NFTMeta: copy + store + drop, NFTBody: store> has key {
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nft: NFT<NFTMeta, NFTBody>,
addr:address
}

/// Check the `owner` is prepared with IdentifierNFT for accept the NFT<NFTMeta, NFTBody>
public fun is_accept<NFTMeta: copy + store + drop, NFTBody: store>(owner: address): bool {
exists<IdentifierNFT<NFTMeta, NFTBody>>(owner)
Expand Down Expand Up @@ -632,6 +638,51 @@ module IdentifierNFT {
Option::destroy_some(nft)
}

/// borrow_mut the NFT<NFTMeta, NFTBody> from owner.
public fun borrow_out<NFTMeta: copy + store + drop, NFTBody: store>(
_cap: &mut UpdateCapability<NFTMeta>,
owner: address
): BorrowIdentifierNFT<NFTMeta, NFTBody> acquires IdentifierNFT {
assert!(exists<IdentifierNFT<NFTMeta, NFTBody>>(owner), Errors::not_published(ERR_NFT_NOT_EXISTS));

let id_nft = borrow_global_mut<IdentifierNFT<NFTMeta, NFTBody>>(owner);
assert!(Option::is_some(&id_nft.nft), Errors::not_published(ERR_NFT_NOT_EXISTS));
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let nft = Option::extract(&mut id_nft.nft);

BorrowIdentifierNFT{
nft : nft,
addr: owner
}
}

/// borrow_mut the NFT<NFTMeta, NFTBody> back to owner.
public fun borrow_back<NFTMeta: copy + store + drop, NFTBody: store>(
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borrownft: BorrowIdentifierNFT<NFTMeta, NFTBody>,
) acquires IdentifierNFT {

let BorrowIdentifierNFT{
nft: nft,
addr: owner
} = borrownft ;
assert!(exists<IdentifierNFT<NFTMeta, NFTBody>>(owner), Errors::not_published(ERR_NFT_NOT_EXISTS));
let id_nft = borrow_global_mut<IdentifierNFT<NFTMeta, NFTBody>>(owner);

Option::fill(&mut id_nft.nft , nft)
}

public fun borrow_nft<NFTMeta: copy + store + drop, NFTBody: store>(
borrownft:&BorrowIdentifierNFT<NFTMeta, NFTBody>
) : & NFT<NFTMeta, NFTBody> {
& borrownft.nft
}

public fun borrow_nft_mut <NFTMeta: copy + store + drop, NFTBody: store>(
borrownft:&mut BorrowIdentifierNFT<NFTMeta, NFTBody>
) : &mut NFT<NFTMeta, NFTBody> {
&mut borrownft.nft
}

/// Check `owner` is owns the IdentifierNFT<NFTMeta, NFTBody>
public fun owns<NFTMeta: copy + store + drop, NFTBody: store>(owner: address): bool acquires IdentifierNFT {
if (!exists<IdentifierNFT<NFTMeta, NFTBody>>(owner)) {
Expand Down