From 01efb76dc4b3cd27dd340097a5df9e032284f478 Mon Sep 17 00:00:00 2001 From: RIYAZ968 <34097365+RIYAZ968@users.noreply.github.com> Date: Sun, 10 Dec 2017 11:51:01 +0530 Subject: [PATCH] Create BITUMIN --- BITUMIN | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 BITUMIN diff --git a/BITUMIN b/BITUMIN new file mode 100644 index 0000000..025f978 --- /dev/null +++ b/BITUMIN @@ -0,0 +1,137 @@ +pragma solidity ^0.4.4; + +contract Token { + + /// @return total amount of tokens + function totalSupply() constant returns (uint256 supply) {} + + /// @param _owner The address from which the balance will be retrieved + /// @return The balance + function balanceOf(address _owner) constant returns (uint256 balance) {} + + /// @notice send `_value` token to `_to` from `msg.sender` + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transfer(address _to, uint256 _value) returns (bool success) {} + + /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` + /// @param _from The address of the sender + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} + + /// @notice `msg.sender` approves `_addr` to spend `_value` tokens + /// @param _spender The address of the account able to transfer the tokens + /// @param _value The amount of wei to be approved for transfer + /// @return Whether the approval was successful or not + function approve(address _spender, uint256 _value) returns (bool success) {} + + /// @param _owner The address of the account owning tokens + /// @param _spender The address of the account able to transfer the tokens + /// @return Amount of remaining tokens allowed to spent + function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} + + event Transfer(address indexed _from, address indexed _to, uint256 _value); + event Approval(address indexed _owner, address indexed _spender, uint256 _value); + +} + + + +contract StandardToken is Token { + + function transfer(address _to, uint256 _value) returns (bool success) { + //Default assumes totalSupply can't be over max (2^256 - 1). + //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. + //Replace the if with this one instead. + //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { + if (balances[msg.sender] >= _value && _value > 0) { + balances[msg.sender] -= _value; + balances[_to] += _value; + Transfer(msg.sender, _to, _value); + return true; + } else { return false; } + } + + function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { + //same as above. Replace this line with the following if you want to protect against wrapping uints. + //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { + if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { + balances[_to] += _value; + balances[_from] -= _value; + allowed[_from][msg.sender] -= _value; + Transfer(_from, _to, _value); + return true; + } else { return false; } + } + + function balanceOf(address _owner) constant returns (uint256 balance) { + return balances[_owner]; + } + + function approve(address _spender, uint256 _value) returns (bool success) { + allowed[msg.sender][_spender] = _value; + Approval(msg.sender, _spender, _value); + return true; + } + + function allowance(address _owner, address _spender) constant returns (uint256 remaining) { + return allowed[_owner][_spender]; + } + + mapping (address => uint256) balances; + mapping (address => mapping (address => uint256)) allowed; + uint256 public totalSupply; +} + + +//name this contract whatever you'd like +contract ERC20Token is StandardToken { + + function () { + //if ether is sent to this address, send it back. + throw; + } + + /* Public variables of the token */ + + /* + NOTE: + The following variables are OPTIONAL vanities. One does not have to include them. + They allow one to customise the token contract & in no way influences the core functionality. + Some wallets/interfaces might not even bother to look at this information. + */ + string public name; //fancy name: eg Simon Bucks + uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether. + string public symbol; //An identifier: eg SBX + string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme. + +// +// CHANGE THESE VALUES FOR YOUR TOKEN +// + +//make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token + + function ERC20Token( + ) { + balances[msg.sender] = NUMBER_OF_TOKENS_HERE; // Give the creator all initial tokens (100000 for example) + totalSupply = NUMBER_OF_TOKENS_HERE; // Update total supply (100000 for example) + name = "NAME OF YOUR TOKEN HERE"; // Set the name for display purposes + decimals = 0; // Amount of decimals for display purposes + symbol = "SYM"; // Set the symbol for display purposes + } + + /* Approves and then calls the receiving contract */ + function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { + allowed[msg.sender][_spender] = _value; + Approval(msg.sender, _spender, _value); + + //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. + //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) + //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. + if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } + return true; + } +}