/// <summary>
/// 读取成员声明。
/// </summary>
/// <param name="reader">源代码读取器。</param>
/// <param name="ends">结束符列表。</param>
/// <returns>返回当前声明字符串。</returns>
public static string ReadDeclaration(this SourceReader reader, params char[] ends)
{
ends = ends.Concat(new[] { '<', ' ', '[' }).Distinct().ToArray();
var builder = new StringBuilder();
reader.EscapeWhiteSpace();
builder.Append(reader.ReadUntil(ends));
switch (reader.Current)
{
case ' ':
reader.EscapeWhiteSpace();
if (reader.IsNext('<')) //泛型类型List <string>
{
builder.Append(reader.ReadQuoteBlock('<', '>'));
}
else if (reader.IsNext('[')) //数组
{
builder.Append(reader.ReadChars(']', new[] { '[', ',', ' ' }));
}
break;
case '<': //泛型类型List<string>
builder.Append(reader.ReadQuoteBlock('<', '>'));
break;
case '[': //数组
builder.Append(reader.ReadChars(']', new[] { '[', ',', ' ' }));
break;
}
reader.EscapeWhiteSpace();
return(builder.ToString().Trim());
}
/// <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>
/// 读取当前代码块。
/// </summary>
/// <param name="reader">字符串读取实例。</param>
public override void Init(SourceReader reader)
{
reader.EscapeWhiteSpace();
var declarations = new List <string>();
string value = null;
while (reader.CanRead)
{
switch (reader.Current)
{
case ')':
reader.Offset(); //{}或者=>;
Rules = reader.ReadRules();
if (reader.Current == ';') //接口方法，没有主体
{
reader.Offset(); //移除;
return;
}
// 代码块
if (reader.IsNext("=>"))
{
reader.Offset(2);
Lambda = reader.ReadQuoteUntil(';').Trim();
reader.Offset(); //移除;
return;
}
else if (reader.Current == ':')
{ //构造函数
reader.Offset();
reader.EscapeWhiteSpace();
BaseConstructor = reader.ReadQuoteUntil('{').Trim();
}
break;
case '{': //结束
Code = reader.ReadQuoteBlock('{', '}');
return;
case ',':
reader.Offset();
Parameters.Add(new ParameterElement(declarations, value, this));
declarations = new List <string>();
value = null;
break;
case '=':
reader.Offset();
value = reader.ReadQuoteUntil(')', ',');
break;
default:
declarations.Add(reader.ReadParameterDeclaration(')'));
break;
}
reader.EscapeWhiteSpace();
}
}
/// <summary>
/// 读取当前代码块。
/// </summary>
/// <param name="reader">字符串读取实例。</param>
public override void Init(SourceReader reader)
{
//Lambda表达式
reader.EscapeWhiteSpace();
if (reader.IsNext('>'))
{
reader.Offset(); //移除>
Lambda = reader.ReadQuoteUntil(';').Trim();
reader.Offset(); //移除;
return;
}
// 获取
if (reader.IsNext("get"))
{
reader.Offset(3);
reader.EscapeWhiteSpace();
if (reader.IsNext(';'))
{
GetField = "get;";
reader.Offset(1);
}
else if (reader.IsNext("=>"))
{
GetField = $"get{reader.ReadQuoteUntil(';').Trim()};";
reader.Offset(1);
}
else if (reader.IsNext('{'))
{
GetField = $"get{reader.ReadQuoteBlock('{', '}').Trim()};";
}
}
// 设置
reader.EscapeWhiteSpace();
if (reader.IsNext("set"))
{
reader.Offset(3);
reader.EscapeWhiteSpace();
if (reader.IsNext(';'))
{
SetField = "set;";
reader.Offset(1);
}
else if (reader.IsNext("=>"))
{
SetField = $"set{reader.ReadQuoteUntil(';').Trim()};";
reader.Offset(1);
}
else if (reader.IsNext('{'))
{
SetField = $"set{reader.ReadQuoteBlock('{', '}').Trim()};";
}
}
//移除}
reader.EscapeWhiteSpace();
reader.Offset();
//默认值
reader.EscapeWhiteSpace();
if (reader.IsNext('='))
{
reader.Offset(); //移除=
Value = reader.ReadQuoteUntil(';').Trim();
reader.Offset(); //移除;
}
}
/// <summary>
/// 读取特性。
/// </summary>
/// <param name="reader">源代码读取器。</param>
protected void ReadAttribute(SourceReader reader)
{
AddElement(new AttributeElement(reader.ReadQuoteBlock('[', ']'), this));
}