// -----------------------------------------------------------------------------
// file="TestRegexAnalyse"
// Project: StgSharp
// Copyright (c) Nitload.
// SPDX-License-Identifier: MIT
// -----------------------------------------------------------------------------

using StgSharp.RegularAnalysis.Abstraction;
using StgSharp.RegularAnalysis.Text;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace StgSharp
{
    public partial class TestRegexAnalyse
    {

        private static string[] regexSource = [
            @"(123(4|5)67){3,4}114514",
            /**/
            @"http|https|ftp|ftps",
            @"abc[0-9]x|abc[0-9]y|abd[0-9]x|abd[0-9]y|xyz",
            @"get_name|get_value|get_type|set_name|set_value|set_type",
            @"helix|hello|help|hero|hers|her",
            @"a*.[abc]*(?<a>abcd|a(bc)c)(?<name>.*)234"
        /**/
        ];

        public static void Run()
        {
            foreach (string regex in regexSource)
            {
                TextRegexSource interpreterSource = RegexAnalyzer.Analyze(regex);
                AbstractSyntaxTree<RegexAstNode, RegexElementLabel> tree = interpreterSource.Ast;
                Console.WriteLine($"result of \"{regex}\"");
                TreeEnumerator<RegexAstNode, RegexElementLabel> enumerator = new(tree);
                while (enumerator.MoveNext())
                {
                    RegexAstNode node = enumerator.Current;
                    Console.Write(new string('|', enumerator.Depth));
                    Console.WriteLine($"\t{node.Source.Value}\t{node.Source.Flag}");
                }
                Console.WriteLine("-----IR-----");
                List<RegexIR> ir = interpreterSource.BaseIR;
                for (int i = 0; i < ir.Count; i++) {
                    Console.WriteLine(ir[i].AsCommand(i));
                }
                Console.WriteLine("-----Optimized once-----");
                List<RegexIR> opt_ir = interpreterSource.IRs;
                for (int i = 0; i < opt_ir.Count; i++) {
                    Console.WriteLine(opt_ir[i].AsCommand(i));
                }
                Console.WriteLine();
                Console.WriteLine(interpreterSource.AnalyseException);
                Console.WriteLine();
                Console.WriteLine();
            }
        }

        [GeneratedRegex(@".*a*b", RegexOptions.ExplicitCapture)]
        internal static partial Regex GetRegex();

    }
}