Merge pull request #897 from Denton-L/remove-standard

BREAKING: Remove standard contracts

1 files changed, 43 insertions, 0 deletions

diff --git a/std/StandardToken.sol b/std/StandardToken.sol
new file mode 100644
index 00000000..db453492
--- /dev/null
+++ b/std/StandardToken.sol
@@ -0,0 +1,43 @@
+import "./Token.sol";
+
+contract StandardToken is Token {
+	uint256 public totalSupply;
+	mapping (address => uint256) public balanceOf;
+	mapping (address =>
+		mapping (address => uint256)) public allowance;
+
+	function StandardToken(address _initialOwner, uint256 _supply) {
+		totalSupply = _supply;
+		balanceOf[_initialOwner] = _supply;
+	}
+
+	function transfer(address _to, uint256 _value) returns (bool success) {
+		if (balanceOf[msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) {
+			balanceOf[msg.sender] -= _value;
+			balanceOf[_to] += _value;
+			Transfer(msg.sender, _to, _value);
+			return true;
+		}
+		else {
+			return false;
+		}
+	}
+
+	function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
+		if (allowance[_from][msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) {
+			allowance[_from][msg.sender] -= _value;
+			balanceOf[_to] += _value;
+			Transfer(_from, _to, _value);
+			return true;
+		}
+		else {
+			return false;
+		}
+	}
+
+	function approve(address _spender, uint256 _value) returns (bool success) {
+		allowance[msg.sender][_spender] = _value;
+		Approval(msg.sender, _spender, _value);
+		return true;
+	}
+}