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re-enabling safemath revert reasons in ERC20, ERC777 and ERC1155 (#2491)

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* re-enabling safemath revert reasons in ERC20 and ERC1155

* adding revert messages to ERC777

* removing uncheck block
This commit is contained in:
Hadrien Croubois
2021-02-01 11:00:16 +01:00
committed by GitHub
parent 60205944bb
commit 5db7413827
11 changed files with 84 additions and 55 deletions
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16
contracts/token/ERC777/ERC777.sol
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@ -277,6 +277,8 @@ contract ERC777 is Context, IERC777, IERC20 {
_callTokensToSend(spender, holder, recipient, amount, "", "");
_move(spender, holder, recipient, amount, "", "");
require(_allowances[holder][spender] >= amount, "ERC777: transfer amount exceeds allowance");
_approve(holder, spender, _allowances[holder][spender] - amount);
_callTokensReceived(spender, holder, recipient, amount, "", "", false);
@ -317,8 +319,8 @@ contract ERC777 is Context, IERC777, IERC20 {
_beforeTokenTransfer(operator, address(0), account, amount);
// Update state variables
_totalSupply = _totalSupply + amount;
_balances[account] = _balances[account] + amount;
_totalSupply += amount;
_balances[account] += amount;
_callTokensReceived(operator, address(0), account, amount, userData, operatorData, true);
@ -383,8 +385,9 @@ contract ERC777 is Context, IERC777, IERC20 {
_beforeTokenTransfer(operator, from, address(0), amount);
// Update state variables
_balances[from] = _balances[from] - amount;
_totalSupply = _totalSupply - amount;
require(_balances[from] >= amount, "ERC777: burn amount exceeds balance");
_balances[from] -= amount;
_totalSupply -= amount;
emit Burned(operator, from, amount, data, operatorData);
emit Transfer(from, address(0), amount);
@ -402,8 +405,9 @@ contract ERC777 is Context, IERC777, IERC20 {
{
_beforeTokenTransfer(operator, from, to, amount);
_balances[from] = _balances[from] - amount;
_balances[to] = _balances[to] + amount;
require(_balances[from] >= amount, "ERC777: transfer amount exceeds balance");
_balances[from] -= amount;
_balances[to] += amount;
emit Sent(operator, from, to, amount, userData, operatorData);
emit Transfer(from, to, amount);