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Use address(0) instead of 0 or 0x0

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This commit is contained in:
Santiago Palladino
2018-03-21 11:42:10 -03:00
parent fb4f728734
commit 6b98e4e080
1 changed files with 7 additions and 7 deletions
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14
contracts/token/ERC721/ERC721BasicToken.sol
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@ -74,7 +74,7 @@ contract ERC721BasicToken is ERC721Basic {
*/ */
function exists(uint256 _tokenId) public view returns (bool) { function exists(uint256 _tokenId) public view returns (bool) {
address owner = tokenOwner[_tokenId]; address owner = tokenOwner[_tokenId];
return owner != 0; return owner != address(0);
} }
/** /**
@ -90,7 +90,7 @@ contract ERC721BasicToken is ERC721Basic {
require(_to != owner); require(_to != owner);
require(msg.sender == owner || isApprovedForAll(owner, msg.sender)); require(msg.sender == owner || isApprovedForAll(owner, msg.sender));
if (getApproved(_tokenId) != 0 || _to != 0) { if (getApproved(_tokenId) != address(0) || _to != address(0)) {
tokenApprovals[_tokenId] = _to; tokenApprovals[_tokenId] = _to;
Approval(owner, _to, _tokenId); Approval(owner, _to, _tokenId);
} }
@ -192,7 +192,7 @@ contract ERC721BasicToken is ERC721Basic {
function doMint(address _to, uint256 _tokenId) internal { function doMint(address _to, uint256 _tokenId) internal {
require(_to != address(0)); require(_to != address(0));
addToken(_to, _tokenId); addToken(_to, _tokenId);
Transfer(0x0, _to, _tokenId); Transfer(address(0), _to, _tokenId);
} }
/** /**
@ -203,7 +203,7 @@ contract ERC721BasicToken is ERC721Basic {
function doBurn(address _owner, uint256 _tokenId) internal { function doBurn(address _owner, uint256 _tokenId) internal {
clearApproval(_owner, _tokenId); clearApproval(_owner, _tokenId);
removeToken(_owner, _tokenId); removeToken(_owner, _tokenId);
Transfer(_owner, 0x0, _tokenId); Transfer(_owner, address(0), _tokenId);
} }
/** /**
@ -236,9 +236,9 @@ contract ERC721BasicToken is ERC721Basic {
*/ */
function clearApproval(address _owner, uint256 _tokenId) internal { function clearApproval(address _owner, uint256 _tokenId) internal {
require(ownerOf(_tokenId) == _owner); require(ownerOf(_tokenId) == _owner);
if (tokenApprovals[_tokenId] != 0) { if (tokenApprovals[_tokenId] != address(0)) {
tokenApprovals[_tokenId] = 0; tokenApprovals[_tokenId] = address(0);
Approval(_owner, 0, _tokenId); Approval(_owner, address(0), _tokenId);
} }
} }