archanox/RGBDS2CIL

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace RGBDS2CIL
{
    public static class CSharp
    {
        public static string GenerateCsharp(string fileName, List<IAsmLine> parsedLines, string root)
        {
            var sb = new StringBuilder();

            var thisName = Regex.Replace(CultureInfo.CurrentCulture.TextInfo.ToTitleCase(Path.GetFileNameWithoutExtension(fileName)).Replace(" ", "").Replace('-', '_'), "[^A-Za-z0-9]", "");

            var includes = parsedLines.OfType<IncludeLine>().ToList();

            var usings = includes.Where(x => !x.IsBinary).Select(x => x.IncludeFile).Distinct();
            foreach (var include in usings)
            {
                sb.Append("using ").Append(CultureInfo.CurrentCulture.TextInfo.ToTitleCase(Path.GetFileNameWithoutExtension(include.Replace('\\', '.').Replace('/', '.')))).AppendLine(";");
            }

            if (usings.Any())
                sb.AppendLine();

            foreach (var include in includes.Where(x => !x.IsBinary))
            {
                var includeFileName = Path.Combine(root, include.IncludeFile);
                var includedCSharp = GenerateCsharp(includeFileName, include.Lines, root);
                File.WriteAllText(includeFileName + ".cs", includedCSharp);
            }

            var tabCount = 1;

            sb.Append("namespace ").AppendLine(CultureInfo.CurrentCulture.TextInfo.ToTitleCase(new DirectoryInfo(root).Name)).AppendLine("{");
            sb.Append(new string('\t', tabCount)).Append("public class ").AppendLine(thisName);
            sb.Append(new string('\t', tabCount++)).AppendLine("{");

            foreach (var parsedLine in parsedLines)
            {
                parsedLine.Reparse().OutputLine(sb, tabCount);
            }

            sb.Append(new string('\t', 1)).AppendLine("}");
            sb.AppendLine("}");

            return sb.ToString();
        }

        public static string ReplaceDataTypesInString(string value)
        {
            if (string.IsNullOrWhiteSpace(value)) return null;
            if (value.StartsWith('"') && value.EndsWith('"')) return value;
            //https://rgbds.gbdev.io/docs/v0.5.2/rgbasm.5#Operators
            //pad out the +-*/%~
            value = value
                .Replace("+", " + ")
                .Replace("*", " * ")
                .Replace("-", " - ")
                .Replace("/", " / ")
                .Replace("  ", " ");

            var newValues = new List<string>();
            foreach (var splitValue in value.Split(' '))
            {
                if (splitValue.StartsWith('$'))
                    newValues.Add(splitValue.TrimStart('$').Insert(0, "0x"));
                else if (splitValue.StartsWith('%') && splitValue.Length > 1)
                    //TODO: check for numbers after the %
                    newValues.Add(splitValue.TrimStart('%').Insert(0, "0b"));
                else if (splitValue.StartsWith('&') && splitValue != "&&" && splitValue.Length == 2)
                    newValues.Add($"Convert.ToInt32(\"{splitValue.TrimStart('%')}\", 8)");
                else
                    newValues.Add(splitValue);
            }

            value = string.Join(' ', newValues);
            return value;
        }
    }
}