BadExpressionPath.cs

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using BadScript2.Parser.Expressions;
 
namespace BadScript2.Parser.Validation.Validators;
 
public class BadExpressionPath
{
    private readonly List<BadExpressionPath> m_ChildPaths = new List<BadExpressionPath>();
 
    public readonly BadExpression Parent;
 
    private bool m_HasReturnStatement;
 
    public BadExpressionPath(BadExpression parent)
    {
        Parent = parent;
    }
 
    public bool IsValid => m_HasReturnStatement || m_ChildPaths.Count > 0 && m_ChildPaths.All(p => p.IsValid);
 
    public IEnumerable<BadExpressionPath> GetInvalidPaths()
    {
        if (!m_HasReturnStatement && m_ChildPaths.Count == 0)
        {
            yield return this;
        }
        else
        {
            foreach (BadExpressionPath invalidPath in m_ChildPaths.SelectMany(childPath => childPath.GetInvalidPaths()))
            {
                yield return invalidPath;
            }
        }
    }
 
    public void AddChildPath(BadExpressionPath path)
    {
        m_ChildPaths.Add(path);
    }
 
    public void SetHasReturnStatement()
    {
        m_HasReturnStatement = true;
        m_ChildPaths.Clear();
    }
}