/// <summary>
/// 初始化类<see cref="FileElement"/>。
/// </summary>
/// <param name="source">文件代码。</param>
public FileElement(string source)
{
using var reader = new SourceReader(source);
reader.EscapeWhiteSpace();
while (reader.CanRead)
{
switch (reader.Current)
{
case 'u': //using
{
var keyword = reader.ReadUntil();
if (keyword == "using")
{
AddElement(new UsingElement(reader.ReadUntil(';').Trim(), this));
reader.Offset();
break;
}
throw new Exception($"不支持：{keyword}关键词！");
}
case 'n': //namespace
{
var keyword = reader.ReadUntil();
if (keyword == "namespace")
{
var @namespace = new NamespaceElement(reader.ReadUntil('{').Trim(), this);
@namespace.Init(reader);
AddElement(@namespace);
break;
}
throw new Exception($"不支持：{keyword}关键词！");
}
case '/':
{
if (reader.IsNext("/*"))
{
AddElement(new CommentElement(reader.ReadUntil("*/"), this));
}
else if (reader.IsNext("//"))
{
AddElement(new CommentElement(reader.ReadLine()?.Trim() + "\r\n", this));
}
else
{
throw new Exception("非法字符串！");
}
}
break;
case '[':
AddElement(new AttributeElement(reader.ReadQuoteBlock('[', ']'), this));
break;
}
reader.EscapeWhiteSpace();
}
}
/// <summary>
/// 读取注释。
/// </summary>
/// <param name="reader">源代码读取器。</param>
protected void ReadComment(SourceReader reader)
{
if (reader.IsNext("/*"))
{
AddElement(new CommentElement(reader.ReadUntil("*/"), this));
}
else if (reader.IsNext("//"))
{
AddElement(new CommentElement(reader.ReadLine()?.Trim(), this));
}
else
{
throw new Exception("非法字符串！");
}
}