# ShareManagerLibrary

This library helps pack multiple boolean flags and lockup durations into a compact `uint256` bitmask. It enables efficient storage and quick access to share manager configuration in vault systems.

Designed for the `ShareManager` component to control:

* Whether minting, burning, or transfers are paused
* Whether deposit/transfer whitelists are active
* How long global or user-specific lockups last

All data is packed into a single `uint256` using bit-level encoding for optimal storage and gas efficiency.

### Bitmask Layout

| Bit Range  | Purpose                       |
| ---------- | ----------------------------- |
| `[0]`      | `hasMintPause` (bool)         |
| `[1]`      | `hasBurnPause` (bool)         |
| `[2]`      | `hasTransferPause` (bool)     |
| `[3]`      | `hasWhitelist` (bool)         |
| `[4]`      | `hasTransferWhitelist` (bool) |
| `[5..36]`  | `globalLockup` (uint32)       |
| `[37..68]` | `targetedLockup` (uint32)     |

### Functions

### `hasMintPause(uint256 mask) → bool`

Returns `true` if minting is paused (bit 0 is set).

### `hasBurnPause(uint256 mask) → bool`

Returns `true` if burning is paused (bit 1 is set).

### `hasTransferPause(uint256 mask) → bool`

Returns `true` if transfers are paused (bit 2 is set).

### `hasWhitelist(uint256 mask) → bool`

Returns `true` if a deposit whitelist is enabled (bit 3 is set).

### `hasTransferWhitelist(uint256 mask) → bool`

Returns `true` if a transfer whitelist is enabled (bit 4 is set).

### `getGlobalLockup(uint256 mask) → uint32`

Returns the **global lockup duration** in seconds (timestamp), encoded in bits `[5..36]`.

### `getTargetedLockup(uint256 mask) → uint32`

Returns the **targeted lockup duration** in seconds, encoded in bits `[37..68]`.

### `createMask(IShareManager.Flags calldata f) → uint256`

Encodes the values in a `Flags` struct into a single bitmask:

```solidity
struct Flags {
    bool hasMintPause;
    bool hasBurnPause;
    bool hasTransferPause;
    bool hasWhitelist;
    bool hasTransferWhitelist;
    uint32 globalLockup;
    uint32 targetedLockup;
}
```


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