private LSObject ParseObject()
{
Consume();
var obj = new LSObject();
var name = new StringBuilder();
while (true)
{
switch (LookAhead())
{
case LSToken.Comma:
Consume();
//分隔符,清除name
name.Clear();
break;
case LSToken.RBracket: //]} 对象终止
case LSToken.RBrace:
Consume();
//处理未能识别的表达式
foreach (var t in dictionary.Keys.ToArray())
{
var t2 = obj.Find(dictionary[t]);
if (t2 != null)
{
if (t.ValueType == LSType.Object)
{
t2.CopyTo(t);
}
else if (t.ValueType == LSType.String && t2.ValueType != LSType.Object)
{
var s = t.Value as string;
t.Value = s.Replace("${" + dictionary[t] + "}", t2.Value?.ToString());
}
dictionary.Remove(t);
}
}
return(obj);
case LSToken.Colon: //:
Consume();
if (LookAhead() != LSToken.Expression)
{
var value = ParseValue();
var t = obj.Add(name.ToString(), value);
if (value is string s)
{
var match = Regex.Match(s, @"\$\{.*\}");
var exp = match.Value;
if (exp != string.Empty && (match.Index < 1 || s[match.Index - 1] != '\\'))
{
dictionary.Add(t, exp.Substring(2, exp.Length - 3));
}
}
name.Clear();
}
break;
case LSToken.Dot:
Consume();
//refrence
name.Append(".");
break;
case LSToken.Expression:
var key = ParseExpression();
var current = obj.Find(key);
var tp = obj.Add(name.ToString(), current);
if (current == null)
{
dictionary.Add(tp, key);
}
current = null;
name.Clear();
break;
case LSToken.Identifier:
name.Append(ParseIdentifier());
break;
case LSToken.Charcter: // 字符/字符串
case LSToken.String:
var val = ParseValue();
if (LookAhead() == LSToken.Colon) //兼容字符串命名
{
name.Clear();
name.Append(val + "");
}
else
{
obj.Add(val);
}
break;
case LSToken.LBrace:
case LSToken.LBracket:
case LSToken.True:
case LSToken.False:
case LSToken.Number:
case LSToken.Null:
obj.Add(ParseValue());
break;
default:
throw new Exception($"无法识别的字符!'{source[index]}'");
}
}
}