// Copyright (c) StellaOps. All rights reserved.
// Licensed under BUSL-1.1. See LICENSE in the project root.
using System.Collections.Immutable;

namespace StellaOps.BinaryIndex.Decompiler;

public sealed partial class DecompiledCodeParser
{
    private static int CountNodes(AstNode node)
    {
        var count = 1;
        foreach (var child in node.Children)
        {
            count += CountNodes(child);
        }
        return count;
    }

    private static int ComputeDepth(AstNode node)
    {
        if (node.Children.Length == 0)
        {
            return 1;
        }

        var maxDepth = 0;
        foreach (var child in node.Children)
        {
            var depth = ComputeDepth(child);
            if (depth > maxDepth)
            {
                maxDepth = depth;
            }
        }

        return 1 + maxDepth;
    }

    private static ImmutableArray<AstPattern> ExtractPatterns(AstNode node)
    {
        var patterns = new List<AstPattern>();

        foreach (var child in node.Children)
        {
            patterns.AddRange(ExtractPatterns(child));
        }

        return [.. patterns];
    }
}