【问题标题】：Find structure in solidity file在solidity文件中查找结构
【发布时间】：2018-09-16 14:23:31
【问题描述】：
我在文本文件中有下一个结构：mapping(address => uint) public lockedAddresses;，我想找到它。我尝试使用下一个正则表达式：mapping\s*\([\w\s=>\d]\)\s+(public\s+)?lockedAddresses。我不明白我怎么才能找到它。
var string = 'event Release();\n address public holder;\n mapping(address => uint) public lockedAddresses;\n modifier isReleased () {\n require(released || msg.sender == holder || msg.sender == owner);\n require(lockedAddresses[msg.sender] <= now);\n _;\n }';
var position = string.search(/mapping\s*\([()\w\s=>\d]\)\s+(public\s+)?lockedAddresses/);
console.log(position);
如何在文本中找到结构：mapping(address => uint) public lockedAddresses;??
【问题讨论】：
标签：
javascript
regex
nsregularexpression
solidity
【解决方案1】：
您需要重复字符类[()\w\s=>\d]+ 一次或多次以匹配左括号( 后的address => uint。
映射\s*\([()\w\s=>\d]+\)\s+(public\s+)?lockedAddresses
^
var string = 'event Release();\n address public holder;\n mapping(address => uint) public lockedAddresses;\n modifier isReleased () {\n require(released || msg.sender == holder || msg.sender == owner);\n require(lockedAddresses[msg.sender] <= now);\n _;\n }';
var position = string.search(/mapping\s*\([()\w\s=>\d]+\)\s+(public\s+)?lockedAddresses/);
console.log(position);
要完全匹配mapping(address => uint) public lockedAddresses;，您应该在正则表达式之后附加一个分号（并且您可以使(public\s+) 成为非捕获组）：
mapping\s*\([()\w\s=>\d]+\)\s+(?:public\s+)?lockedAddresses;