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ERC721: path towards completion V2 #25

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ERC721: path towards completion V2 #25

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524dcbf
ERC721:name: added arg encoding + sstore in constructor: failing
exp-table May 29, 2022
0d572fc
ERC721:name+symbol constructor sstore + view functions
exp-table May 30, 2022
764f9c5
Rolled back package-lock.json
exp-table May 31, 2022
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30 changes: 25 additions & 5 deletions examples/erc721/contracts/ERC721.huff
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Original file line number Diff line number Diff line change
Expand Up @@ -8,9 +8,6 @@
/* Interface */
#define function mint(address,uint256) nonpayable returns ()

#define function name() nonpayable returns (string)
#define function symbol() nonpayable returns (string)
#define function tokenURI(uint256) nonpayable returns (string)

#define function mint(address,uint256) nonpayable returns ()
#define function transfer(address,uint256) nonpayable returns ()
Expand All @@ -22,6 +19,9 @@
#define function isApprovedForAll(address,address) view returns (uint256)
#define function ownerOf(uint256) view returns (address)
#define function balanceOf(address) view returns (uint256)
#define function name() view returns (string)
#define function symbol() view returns (string)
#define function tokenURI(uint256) view returns (string)

#define event Transfer(address,address,uint256)
#define event Approval(address,address,uint256)
Expand All @@ -44,6 +44,14 @@
#define macro CONSTRUCTOR() = takes(0) returns (0) {
// Set msg.sender as the owner of the contract.
OWNABLE_CONSTRUCTOR()
// Name is first
0x20 0x40 codesize sub 0x00 // [mem_loc, codesize-size_of_name*2, size_of_name]
codecopy 0x00 mload // [name]
[NAME_LOCATION] sstore // []

0x20 0x20 codesize sub 0x00 // [mem_loc, codesize-size_of_symbol, size_of_symbol]
codecopy 0x00 mload // [symbol]
[SYMBOL_LOCATION] sstore // []
}

/// >>>>>>>>>>>>>>>>>>>>> VIEW FUNCTIONS <<<<<<<<<<<<<<<<<<<<<< ///
Expand Down Expand Up @@ -80,11 +88,23 @@
}

#define macro NAME() = takes (0) returns (0) {
0x00 0x00 revert
0x20 0x00 mstore // []
[NAME_LOCATION] sload // [name]
// get size of string and store it in memory
dup1 0xffff and 0x20 mstore // [length, name]
// potential issue ; will return original string with last 2 bytes holding length
0x40 mstore
0x60 0x00 return
}

#define macro SYMBOL() = takes (0) returns (0) {
0x00 0x00 revert
0x20 0x00 mstore // []
[SYMBOL_LOCATION] sload // [symbol]
// get size of string and store it in memory
dup1 0xffff and 0x20 mstore // [length, symbol]
// potential issue ; will return original string with last 2 bytes holding length
0x40 mstore
0x60 0x00 return
}

#define macro TOKEN_URI() = takes (0) returns (0) {
Expand Down
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