using HybridCLR.Editor.Meta;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using UnityEngine;
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namespace HybridCLR.Editor.AOT
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{
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public class GenericReferenceWriter
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{
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private static readonly Dictionary<Type, string> _typeNameMapping = new Dictionary<Type, string>
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{
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{typeof(bool), "bool" },
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{typeof(byte), "byte" },
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{typeof(sbyte), "sbyte" },
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{typeof(short), "short" },
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{typeof(ushort), "ushort" },
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{typeof(int), "int" },
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{typeof(uint), "uint" },
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{typeof(long), "long" },
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{typeof(ulong), "ulong" },
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{typeof(float), "float" },
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{typeof(double), "double" },
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{typeof(object), "object" },
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{typeof(string), "string" },
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};
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private readonly Dictionary<string, string> _typeSimpleNameMapping = new Dictionary<string, string>();
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private readonly Regex _systemTypePattern;
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private readonly Regex _genericPattern = new Regex(@"`\d+");
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public GenericReferenceWriter()
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{
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foreach (var e in _typeNameMapping)
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{
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_typeSimpleNameMapping.Add(e.Key.FullName, e.Value);
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}
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_systemTypePattern = new Regex(string.Join("|", _typeSimpleNameMapping.Keys.Select (k => $@"\b{Regex.Escape(k)}\b")));
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}
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public string PrettifyTypeSig(string typeSig)
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{
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string s = _genericPattern.Replace(typeSig, "").Replace('/', '.');
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return _systemTypePattern.Replace(s, m => _typeSimpleNameMapping[m.Groups[0].Value]);
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}
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public string PrettifyMethodSig(string methodSig)
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{
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string s = PrettifyTypeSig(methodSig).Replace("::", ".");
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if (s.Contains(".ctor("))
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{
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s = "new " + s.Replace(".ctor(", "(");
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}
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return s;
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}
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public void Write(List<GenericClass> types, List<GenericMethod> methods, string outputFile)
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{
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string parentDir = Directory.GetParent(outputFile).FullName;
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Directory.CreateDirectory(parentDir);
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List<string> codes = new List<string>();
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codes.Add("using System.Collections.Generic;");
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codes.Add("public class AOTGenericReferences : UnityEngine.MonoBehaviour");
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codes.Add("{");
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codes.Add("");
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codes.Add("\t// {{ AOT assemblies");
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codes.Add("\tpublic static readonly IReadOnlyList<string> PatchedAOTAssemblyList = new List<string>");
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codes.Add("\t{");
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List<dnlib.DotNet.ModuleDef> modules = new HashSet<dnlib.DotNet.ModuleDef>(
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types.Select(t => t.Type.Module).Concat(methods.Select(m => m.Method.Module))).ToList();
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modules.Sort((a, b) => a.Name.CompareTo(b.Name));
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foreach (dnlib.DotNet.ModuleDef module in modules)
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{
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codes.Add($"\t\t\"{module.Name}\",");
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}
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codes.Add("\t};");
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codes.Add("\t// }}");
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codes.Add("");
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codes.Add("\t// {{ constraint implement type");
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codes.Add("\t// }} ");
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codes.Add("");
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codes.Add("\t// {{ AOT generic types");
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List<string> typeNames = types.Select(t => PrettifyTypeSig(t.ToTypeSig().ToString())).ToList();
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typeNames.Sort(string.CompareOrdinal);
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foreach(var typeName in typeNames)
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{
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codes.Add($"\t// {typeName}");
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}
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codes.Add("\t// }}");
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codes.Add("");
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codes.Add("\tpublic void RefMethods()");
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codes.Add("\t{");
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List<(string, string, string)> methodTypeAndNames = methods.Select(m =>
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(PrettifyTypeSig(m.Method.DeclaringType.ToString()), PrettifyMethodSig(m.Method.Name), PrettifyMethodSig(m.ToMethodSpec().ToString())))
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.ToList();
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methodTypeAndNames.Sort((a, b) =>
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{
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int c = String.Compare(a.Item1, b.Item1, StringComparison.Ordinal);
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if (c != 0)
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{
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return c;
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}
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c = String.Compare(a.Item2, b.Item2, StringComparison.Ordinal);
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if (c != 0)
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{
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return c;
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}
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return String.Compare(a.Item3, b.Item3, StringComparison.Ordinal);
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});
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foreach(var method in methodTypeAndNames)
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{
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codes.Add($"\t\t// {PrettifyMethodSig(method.Item3)}");
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}
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codes.Add("\t}");
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codes.Add("}");
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var utf8WithoutBom = new System.Text.UTF8Encoding(false);
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File.WriteAllText(outputFile, string.Join("\n", codes), utf8WithoutBom);
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Debug.Log($"[GenericReferenceWriter] write {outputFile}");
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}
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}
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}
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