/* * The MIT License (MIT) * * Copyright (c) 2014, 2015, the individual contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ var multi = function(func) { return func.toString().match(/[^]*\/\*([^]*)\*\/\}$/)[1]; } var BALLOT_EXAMPLE = multi(function(){/*contract Ballot { struct Voter { uint weight; bool voted; uint8 vote; address delegate; } struct Proposal { uint voteCount; } address chairperson; mapping(address => Voter) voters; Proposal[] proposals; // Create a new ballot with $(_numProposals) different proposals. function Ballot(uint8 _numProposals) { chairperson = msg.sender; voters[chairperson].weight = 1; proposals.length = _numProposals; } // Give $(voter) the right to vote on this ballot. // May only be called by $(chairperson). function giveRightToVote(address voter) { if (msg.sender != chairperson || voters[voter].voted) return; voters[voter].weight = 1; } // Delegate your vote to the voter $(to). function delegate(address to) { Voter sender = voters[msg.sender]; // assigns reference if (sender.voted) return; while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender) to = voters[to].delegate; if (to == msg.sender) return; sender.voted = true; sender.delegate = to; Voter delegate = voters[to]; if (delegate.voted) proposals[delegate.vote].voteCount += sender.weight; else delegate.weight += sender.weight; } // Give a single vote to proposal $(proposal). function vote(uint8 proposal) { Voter sender = voters[msg.sender]; if (sender.voted || proposal >= proposals.length) return; sender.voted = true; sender.vote = proposal; proposals[proposal].voteCount += sender.weight; } function winningProposal() constant returns (uint8 winningProposal) { uint256 winningVoteCount = 0; for (uint8 proposal = 0; proposal < proposals.length; proposal++) { if (proposals[proposal].voteCount > winningVoteCount) { winningVoteCount = proposals[proposal].voteCount; winningProposal = proposal; } ++proposal; } } } */});