我想解析下面的文件,
first=The_First_Step
{
{
value=First.Value,
}
}
second=The_Second_Step
{
{
another = Second_Value,
more = Yet.More,
}
}
我将语法写为,
public static NGSection ParseSections(string ngServerConfig)
{
return Sections.End().Parse(ngServerConfig);
}
internal static Parser<string> ValueText = Parse.LetterOrDigit.AtLeastOnce().Text().Token();
internal static Parser<string> Identifier = Parse.AnyChar.AtLeastOnce().Text().Token();
internal static Parser<Config> Config =
from id in Identifier
from equal in Parse.Char('=').Token()
from value in ValueText
from comma in Parse.Char(',').Token()
select new Config(id, value);
internal static Parser<Section> Section =
from id in Identifier
from equal in Parse.Char('=').Token()
from title in ValueText
from lbracket in Parse.Char('{').Token()
from inbracket in Parse.Char('{').Token()
from configs in Config.AtLeastOnce()
from outbracket in Parse.Char('}').Token()
from rbracket in Parse.Char('}').Token()
select new Section(id, title, configs);
internal static Parser<NGSection> Sections =
from sections in Section.AtLeastOnce()
select new NGSection(sections);
我遇到异常
解析失败:意外到达输入结尾;预期=(第13行,第2列);最近消耗:矿石 } }
任何线索都会有帮助。
最佳答案
两个问题:首先,在您的示例中,值可以包含 _
或 .
,因此 LetterOrDigit
不会覆盖它。应该是:
internal static Parser<string> ValueText =
Parse.LetterOrDigit.Or(Parse.Chars('_', '.')).AtLeastOnce().Text().Token();
接下来,Identifier
解析器的AnyChar
太贪婪了;您需要排除 =
,否则它将被视为标识符的一部分:
internal static Parser<string> Identifier =
Parse.CharExcept('=').AtLeastOnce().Text().Token();
关于sprache - 使用 Sprache 解析文件时出现异常 "Parsing failure: Unexpected end of input reached; expected =",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45913463/