EternalStorage.sol
View Source: contracts/storage/EternalStorage.sol
↘ Derived Contracts: ModuleRegistry, ModuleRegistryProxy, SecurityTokenRegistry, SecurityTokenRegistryProxy, STRGetter
EternalStorage
Contract Members
Constants & Variables
Functions
set
Set the key values using the Overloaded set
functions Ex- string version = "0.0.1"; replace to set(keccak256(abi.encodePacked("version"), "0.0.1"); same for the other variables as well some more example listed below ex1 - address securityTokenAddress = 0x123; replace to set(keccak256(abi.encodePacked("securityTokenAddress"), 0x123); ex2 - bytes32 tokenDetails = "I am ST20"; replace to set(keccak256(abi.encodePacked("tokenDetails"), "I am ST20"); ex3 - mapping(string => address) ownedToken; set(keccak256(abi.encodePacked("ownedToken", "Chris")), 0x123); ex4 - mapping(string => uint) tokenIndex; tokenIndex["TOKEN"] = 1; replace to set(keccak256(abi.encodePacked("tokenIndex", "TOKEN"), 1); ex5 - mapping(string => SymbolDetails) registeredSymbols; where SymbolDetails is the structure having different type of values as {uint256 date, string name, address owner} etc. registeredSymbols["TOKEN"].name = "MyFristToken"; replace to set(keccak256(abi.encodePacked("registeredSymbolsname", "TOKEN"), "MyFirstToken"); More generalized- set(keccak256(abi.encodePacked("registeredSymbols", "keyname"), "value");
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | uint256 |
set
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | address |
set
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | bool |
set
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | bytes32 |
set
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | string |
set
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | bytes |
deleteArrayAddress
Function used to delete the array element. Ex1- mapping(address => bytes32[]) tokensOwnedByOwner; For deleting the item from array developers needs to create a funtion for that similarly in this case we have the helper function deleteArrayBytes32() which will do it for us deleteArrayBytes32(keccak256(abi.encodePacked("tokensOwnedByOwner", 0x1), 3); -- it will delete the index 3
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 |
deleteArrayBytes32
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 |
deleteArrayUint
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 |
deleteArrayString
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 |
pushArray
Below are the helper functions to facilitate storing arrays of different data types. Ex1- mapping(address => bytes32[]) tokensOwnedByTicker; tokensOwnedByTicker[owner] = tokensOwnedByTicker[owner].push("xyz"); replace with pushArray(keccak256(abi.encodePacked("tokensOwnedByTicker", owner), "xyz");
Arguments
Name | Type | Description |
_key | bytes32 | bytes32 type |
_value | address | [uint256, string, bytes32, address] any of the data type in array |
pushArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | bytes32 |
pushArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | string |
pushArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | uint256 |
setArray
used to intialize the array Ex1- mapping (address => address[]) public reputation; reputation[0x1] = new address; It can be replaced as setArray(hash('reputation', 0x1), new address);
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | address[] |
setArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | uint256[] |
setArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | bytes32[] |
setArray
Arguments
Name | Type | Description |
_key | bytes32 | |
_value | string[] |
getArrayAddress
Get functions to get the array of the required data type Ex1- mapping(address => bytes32[]) tokensOwnedByOwner; getArrayBytes32(keccak256(abi.encodePacked("tokensOwnedByOwner", 0x1)); It return the bytes32 array Ex2- uint256 _len = tokensOwnedByOwner[0x1].length; replace with getArrayBytes32(keccak256(abi.encodePacked("tokensOwnedByOwner", 0x1)).length;
Arguments
Name | Type | Description |
_key | bytes32 |
getArrayBytes32
Arguments
Name | Type | Description |
_key | bytes32 |
getArrayUint
Arguments
Name | Type | Description |
_key | bytes32 |
setArrayIndexValue
set the value of particular index of the address array Ex1- mapping(bytes32 => address[]) moduleList; general way is -- moduleList[moduleType][index] = temp; It can be re-write as -- setArrayIndexValue(keccak256(abi.encodePacked('moduleList', moduleType)), index, temp);
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 | |
_value | address |
setArrayIndexValue
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 | |
_value | uint256 |
setArrayIndexValue
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 | |
_value | bytes32 |
setArrayIndexValue
Arguments
Name | Type | Description |
_key | bytes32 | |
_index | uint256 | |
_value | string |
getUintValue
Get function use to get the value of the singleton state variables Ex1- string public version = "0.0.1"; string _version = getString(keccak256(abi.encodePacked("version")); Ex2 - assert(temp1 == temp2); replace to assert(getUint(keccak256(abi.encodePacked(temp1)) == getUint(keccak256(abi.encodePacked(temp2)); Ex3 - mapping(string => SymbolDetails) registeredSymbols; where SymbolDetails is the structure having different type of values as {uint256 date, string name, address owner} etc. string _name = getString(keccak256(abi.encodePacked("registeredSymbols_name", "TOKEN"));
Arguments
Name | Type | Description |
_variable | bytes32 |
getBoolValue
Arguments
Name | Type | Description |
_variable | bytes32 |
getStringValue
Arguments
Name | Type | Description |
_variable | bytes32 |
getAddressValue
Arguments
Name | Type | Description |
_variable | bytes32 |
getBytes32Value
Arguments
Name | Type | Description |
_variable | bytes32 |
getBytesValue
Arguments
Name | Type | Description |
_variable | bytes32 |
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