OVM_ETH.md 7.53 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407
# OVM_ETH



> OVM_ETH



*The ETH predeploy provides an ERC20 interface for ETH deposited to Layer 2. Note that unlike on Layer 1, Layer 2 accounts do not have a balance field.*

## Methods

### allowance

```solidity
function allowance(address owner, address spender) external view returns (uint256)
```



*See {IERC20-allowance}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| owner | address | undefined
| spender | address | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | uint256 | undefined

### approve

```solidity
function approve(address spender, uint256 amount) external nonpayable returns (bool)
```



*Sets `amount` as the allowance of `spender` over the caller's tokens. Returns a boolean value indicating whether the operation succeeded. IMPORTANT: Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 Emits an {Approval} event.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| spender | address | undefined
| amount | uint256 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined

### balanceOf

```solidity
function balanceOf(address account) external view returns (uint256)
```



*See {IERC20-balanceOf}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| account | address | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | uint256 | undefined

### burn

```solidity
function burn(address _from, uint256 _amount) external nonpayable
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| _from | address | undefined
| _amount | uint256 | undefined

### decimals

```solidity
function decimals() external view returns (uint8)
```



*Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the value {ERC20} uses, unless this function is overridden; NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.*


#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | uint8 | undefined

### decreaseAllowance

```solidity
function decreaseAllowance(address spender, uint256 subtractedValue) external nonpayable returns (bool)
```



*Atomically decreases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| spender | address | undefined
| subtractedValue | uint256 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined

### increaseAllowance

```solidity
function increaseAllowance(address spender, uint256 addedValue) external nonpayable returns (bool)
```



*Atomically increases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| spender | address | undefined
| addedValue | uint256 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined

### l1Token

```solidity
function l1Token() external view returns (address)
```






#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | address | undefined

### l2Bridge

```solidity
function l2Bridge() external view returns (address)
```






#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | address | undefined

### mint

```solidity
function mint(address _to, uint256 _amount) external nonpayable
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| _to | address | undefined
| _amount | uint256 | undefined

### name

```solidity
function name() external view returns (string)
```



*Returns the name of the token.*


#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | string | undefined

### supportsInterface

```solidity
function supportsInterface(bytes4 _interfaceId) external pure returns (bool)
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| _interfaceId | bytes4 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined

### symbol

```solidity
function symbol() external view returns (string)
```



*Returns the symbol of the token, usually a shorter version of the name.*


#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | string | undefined

### totalSupply

```solidity
function totalSupply() external view returns (uint256)
```



*See {IERC20-totalSupply}.*


#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | uint256 | undefined

### transfer

```solidity
function transfer(address recipient, uint256 amount) external nonpayable returns (bool)
```



*Moves `amount` tokens from the caller's account to `recipient`. Returns a boolean value indicating whether the operation succeeded. Emits a {Transfer} event.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| recipient | address | undefined
| amount | uint256 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined

### transferFrom

```solidity
function transferFrom(address sender, address recipient, uint256 amount) external nonpayable returns (bool)
```



*Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance. Returns a boolean value indicating whether the operation succeeded. Emits a {Transfer} event.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| sender | address | undefined
| recipient | address | undefined
| amount | uint256 | undefined

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined



## Events

### Approval

```solidity
event Approval(address indexed owner, address indexed spender, uint256 value)
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| owner `indexed` | address | undefined |
| spender `indexed` | address | undefined |
| value  | uint256 | undefined |

### Burn

```solidity
event Burn(address indexed _account, uint256 _amount)
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| _account `indexed` | address | undefined |
| _amount  | uint256 | undefined |

### Mint

```solidity
event Mint(address indexed _account, uint256 _amount)
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| _account `indexed` | address | undefined |
| _amount  | uint256 | undefined |

### Transfer

```solidity
event Transfer(address indexed from, address indexed to, uint256 value)
```





#### Parameters

| Name | Type | Description |
|---|---|---|
| from `indexed` | address | undefined |
| to `indexed` | address | undefined |
| value  | uint256 | undefined |