Canon/Canon.Core/SyntaxNodes/ParameterList.cs
jackfiled 5e3ea6303e refact: syntax-node (#23)
重构语法树的部分,使用单独的类来抽象不同的非终结符节点。
**同时**,将`Pascal`语法的定义从测试项目中移动到核心项目中,在项目中只维护一份对于`Pascal`语法的定义。

Reviewed-on: PostGuard/Canon#23
2024-04-07 16:47:28 +08:00

55 lines
1.3 KiB
C#

using Canon.Core.Enums;
namespace Canon.Core.SyntaxNodes;
public class ParameterList : NonTerminatedSyntaxNode
{
public override NonTerminatorType Type => NonTerminatorType.ParameterList;
public bool IsRecursive { get; private init; }
/// <summary>
/// 声明的参数列表
/// </summary>
public IEnumerable<Parameter> Parameters => GetParameters();
public static ParameterList Create(List<SyntaxNodeBase> children)
{
bool isRecursive;
if (children.Count == 1)
{
isRecursive = false;
}
else if (children.Count == 3)
{
isRecursive = true;
}
else
{
throw new InvalidOperationException();
}
return new ParameterList { Children = children, IsRecursive = isRecursive };
}
private IEnumerable<Parameter> GetParameters()
{
ParameterList list = this;
while (true)
{
if (list.IsRecursive)
{
yield return list.Children[2].Convert<Parameter>();
list = list.Children[0].Convert<ParameterList>();
}
else
{
yield return list.Children[0].Convert<Parameter>();
break;
}
}
}
}