|
|
- using IPA.Config.Data;
- using IPA.Logging;
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Reflection;
- using System.Reflection.Emit;
- using System.Text;
- using System.Threading;
- using System.Threading.Tasks;
- using System.Linq.Expressions;
- using System.Runtime.CompilerServices;
- using System.IO;
- using Boolean = IPA.Config.Data.Boolean;
- using System.Collections;
- #if NET3
- using Net3_Proxy;
- using Array = Net3_Proxy.Array;
- #endif
-
- [assembly: InternalsVisibleTo(IPA.Config.Stores.GeneratedStore.GeneratedAssemblyName)]
-
- namespace IPA.Config.Stores
- {
- /// <summary>
- /// A class providing an extension for <see cref="Config"/> to make it easy to use generated
- /// config stores.
- /// </summary>
- public static class GeneratedExtension
- {
- /// <summary>
- /// The name of the assembly that internals must be visible to to allow internal protection.
- /// </summary>
- public const string AssemblyVisibilityTarget = GeneratedStore.GeneratedAssemblyName;
-
- /// <summary>
- /// Creates a generated <see cref="IConfigStore"/> of type <typeparamref name="T"/>, registers it to
- /// the <see cref="Config"/> object, and returns it. This also forces a synchronous config load via
- /// <see cref="Config.LoadSync"/> if <paramref name="loadSync"/> is <see langword="true"/>.
- /// </summary>
- /// <remarks>
- /// <para>
- /// <typeparamref name="T"/> must be a public non-<see langword="sealed"/> <see langword="class"/>.
- /// It can also be internal, but in that case, then your assembly must have the following attribute
- /// to allow the generated code to reference it.
- /// <code>
- /// [assembly: InternalsVisibleTo(IPA.Config.Stores.GeneratedExtension.AssemblyVisibilityTarget)]
- /// </code>
- /// </para>
- /// <para>
- /// If the <typeparamref name="T"/> declares a <see langword="public"/> or <see langword="protected"/>, <see langword="virtual"/>
- /// method <c>Changed()</c>, then that method may be called to artificially signal to the runtime that the content of the object
- /// has changed. That method will also be called after the write locks are released when a property is set anywhere in the owning
- /// tree. This will only be called on the outermost generated object of the config structure, even if the change being signaled
- /// is somewhere deep into the tree.
- /// </para>
- /// <para>
- /// Similarly, <typeparamref name="T"/> can declare a <see langword="public"/> or <see langword="protected"/>, <see langword="virtual"/>
- /// method <c>OnReload()</c>, which will be called on the filesystem reader thread after the object has been repopulated with new data
- /// values. It will be called <i>after</i> the write lock for this object is released. This will only be called on the outermost generated
- /// object of the config structure.
- /// </para>
- /// <para>
- /// TODO: describe details of generated stores
- /// </para>
- /// </remarks>
- /// <typeparam name="T">the type to wrap</typeparam>
- /// <param name="cfg">the <see cref="Config"/> to register to</param>
- /// <param name="loadSync">whether to synchronously load the content, or trigger an async load</param>
- /// <returns>a generated instance of <typeparamref name="T"/> as a special <see cref="IConfigStore"/></returns>
- public static T Generated<T>(this Config cfg, bool loadSync = true) where T : class
- {
- var ret = GeneratedStore.Create<T>();
- cfg.SetStore(ret as IConfigStore);
- if (loadSync)
- cfg.LoadSync();
- else
- cfg.LoadAsync();
-
- return ret;
- }
- }
-
- internal static class GeneratedStore
- {
- internal interface IGeneratedStore
- {
- /// <summary>
- /// serializes/deserializes to Value
- /// </summary>
- Value Values { get; set; }
- Type Type { get; }
- IGeneratedStore Parent { get; }
- Impl Impl { get; }
- void OnReload();
- }
-
- internal class Impl : IConfigStore
- {
- private IGeneratedStore generated;
-
- internal static ConstructorInfo Ctor = typeof(Impl).GetConstructor(new[] { typeof(IGeneratedStore) });
- public Impl(IGeneratedStore store) => generated = store;
-
- private readonly AutoResetEvent resetEvent = new AutoResetEvent(false);
- public WaitHandle SyncObject => resetEvent;
- internal static MethodInfo SyncObjectGetMethod = typeof(Impl).GetProperty(nameof(SyncObject)).GetGetMethod();
-
- public ReaderWriterLockSlim WriteSyncObject { get; } = new ReaderWriterLockSlim();
- internal static MethodInfo WriteSyncObjectGetMethod = typeof(Impl).GetProperty(nameof(WriteSyncObject)).GetGetMethod();
-
- internal static MethodInfo ImplSignalChangedMethod = typeof(Impl).GetMethod(nameof(ImplSignalChanged));
- public static void ImplSignalChanged(IGeneratedStore s) => FindImpl(s).SignalChanged();
- public void SignalChanged() => resetEvent.Set();
-
- internal static MethodInfo ImplTakeReadMethod = typeof(Impl).GetMethod(nameof(ImplTakeRead));
- public static void ImplTakeRead(IGeneratedStore s) => FindImpl(s).TakeRead();
- public void TakeRead() => WriteSyncObject.EnterReadLock();
-
- internal static MethodInfo ImplReleaseReadMethod = typeof(Impl).GetMethod(nameof(ImplReleaseRead));
- public static void ImplReleaseRead(IGeneratedStore s) => FindImpl(s).ReleaseRead();
- public void ReleaseRead() => WriteSyncObject.ExitReadLock();
-
- internal static MethodInfo ImplTakeWriteMethod = typeof(Impl).GetMethod(nameof(ImplTakeWrite));
- public static void ImplTakeWrite(IGeneratedStore s) => FindImpl(s).TakeWrite();
- public void TakeWrite() => WriteSyncObject.EnterWriteLock();
-
- internal static MethodInfo ImplReleaseWriteMethod = typeof(Impl).GetMethod(nameof(ImplReleaseWrite));
- public static void ImplReleaseWrite(IGeneratedStore s) => FindImpl(s).ReleaseWrite();
- public void ReleaseWrite() => WriteSyncObject.ExitWriteLock();
-
- internal static MethodInfo FindImplMethod = typeof(Impl).GetMethod(nameof(FindImpl));
- public static Impl FindImpl(IGeneratedStore store)
- {
- while (store?.Parent != null) store = store.Parent; // walk to the top of the tree
- return store?.Impl;
- }
-
-
-
- internal static MethodInfo ReadFromMethod = typeof(Impl).GetMethod(nameof(ReadFrom));
- public void ReadFrom(IConfigProvider provider)
- {
- var values = provider.Load();
- Logger.config.Debug("Generated impl ReadFrom");
- Logger.config.Debug($"Read {values}");
- generated.Values = values;
-
- ReleaseWrite();
- generated.OnReload();
- TakeWrite(); // must take again for runtime to be happy (which is unfortunate)
- }
-
- internal static MethodInfo WriteToMethod = typeof(Impl).GetMethod(nameof(WriteTo));
- public void WriteTo(IConfigProvider provider)
- {
- var values = generated.Values;
- Logger.config.Debug("Generated impl WriteTo");
- Logger.config.Debug($"Serialized {values}");
- provider.Store(values);
- }
- }
-
- private static Dictionary<Type, Func<IGeneratedStore, IConfigStore>> generatedCreators = new Dictionary<Type, Func<IGeneratedStore, IConfigStore>>();
- private static Dictionary<Type, Dictionary<string, Type>> memberMaps = new Dictionary<Type, Dictionary<string, Type>>();
-
- public static T Create<T>() where T : class => (T)Create(typeof(T));
-
- public static IConfigStore Create(Type type) => Create(type, null);
-
- private static readonly MethodInfo CreateGParent =
- typeof(GeneratedStore).GetMethod(nameof(Create), BindingFlags.NonPublic | BindingFlags.Static, null,
- CallingConventions.Any, new[] { typeof(IGeneratedStore) }, Array.Empty<ParameterModifier>());
- internal static T Create<T>(IGeneratedStore parent) where T : class => (T)Create(typeof(T), parent);
-
- private static IConfigStore Create(Type type, IGeneratedStore parent)
- {
- if (generatedCreators.TryGetValue(type, out var creator))
- return creator(parent);
- else
- {
- creator = MakeCreator(type);
- generatedCreators.Add(type, creator);
- return creator(parent);
- }
- }
-
- internal const string GeneratedAssemblyName = "IPA.Config.Generated";
-
- private static AssemblyBuilder assembly = null;
- private static AssemblyBuilder Assembly
- {
- get
- {
- if (assembly == null)
- {
- var name = new AssemblyName(GeneratedAssemblyName);
- assembly = AppDomain.CurrentDomain.DefineDynamicAssembly(name, AssemblyBuilderAccess.RunAndSave);
- }
-
- return assembly;
- }
- }
-
- internal static void DebugSaveAssembly(string file)
- {
- Assembly.Save(file);
- }
-
- private static ModuleBuilder module = null;
- private static ModuleBuilder Module
- {
- get
- {
- if (module == null)
- module = Assembly.DefineDynamicModule(Assembly.GetName().Name, Assembly.GetName().Name + ".dll");
-
- return module;
- }
- }
-
- private struct SerializedMemberInfo
- {
- public string Name;
- public MemberInfo Member;
- public bool IsVirtual;
- public bool IsField;
- public Type Type;
- }
-
- private static Func<IGeneratedStore, IConfigStore> MakeCreator(Type type)
- {
- var baseCtor = type.GetConstructor(Type.EmptyTypes); // get a default constructor
- if (baseCtor == null)
- throw new ArgumentException("Config type does not have a public parameterless constructor");
-
- var typeBuilder = Module.DefineType($"{type.FullName}<Generated>",
- TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Class, type);
-
- var typeField = typeBuilder.DefineField("<>_type", typeof(Type), FieldAttributes.Private | FieldAttributes.InitOnly);
- var implField = typeBuilder.DefineField("<>_impl", typeof(Impl), FieldAttributes.Private | FieldAttributes.InitOnly);
- var parentField = typeBuilder.DefineField("<>_parent", typeof(IGeneratedStore), FieldAttributes.Private | FieldAttributes.InitOnly);
-
-
- // none of this can be Expressions because CompileToMethod requires a static target method for some dumbass reason
-
- #region Parse base object structure
- var baseChanged = type.GetMethod("Changed", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, Array.Empty<ParameterModifier>());
- if (baseChanged != null && !baseChanged.IsVirtual) baseChanged = null; // limit this to just the one thing
- var baseOnReload = type.GetMethod("OnReload", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, Array.Empty<ParameterModifier>());
- if (baseOnReload != null && !baseOnReload.IsVirtual) baseOnReload = null; // limit this to just the one thing
-
- var structure = new List<SerializedMemberInfo>();
-
- // TODO: incorporate attributes/base types
- // TODO: ignore probs without setter
-
- // only looks at public properties
- foreach (var prop in type.GetProperties(BindingFlags.Instance | BindingFlags.Public))
- {
- var smi = new SerializedMemberInfo
- {
- Name = prop.Name,
- Member = prop,
- IsVirtual = (prop.GetGetMethod(true)?.IsVirtual ?? false) ||
- (prop.GetSetMethod(true)?.IsVirtual ?? false),
- IsField = false,
- Type = prop.PropertyType
- };
-
- structure.Add(smi);
- }
-
- // only look at public fields
- foreach (var field in type.GetFields(BindingFlags.Instance | BindingFlags.Public))
- {
- var smi = new SerializedMemberInfo
- {
- Name = field.Name,
- Member = field,
- IsVirtual = false,
- IsField = true,
- Type = field.FieldType
- };
-
- structure.Add(smi);
- }
- #endregion
-
- #region Constructor
- var ctor = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, new[] { typeof(IGeneratedStore) });
- { // because this is a constructor, it has to be raw IL
- var il = ctor.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0); // keep this at bottom of stack
-
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Call, baseCtor);
-
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Ldarg_1); // load parent
- il.Emit(OpCodes.Stfld, parentField);
-
- il.Emit(OpCodes.Dup);
- EmitTypeof(il, type);
- il.Emit(OpCodes.Stfld, typeField);
-
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Newobj, Impl.Ctor);
- il.Emit(OpCodes.Stfld, implField);
-
- foreach (var member in structure)
- EmitMemberFix(il, member);
-
- il.Emit(OpCodes.Pop);
-
- il.Emit(OpCodes.Ret);
-
- }
- #endregion
-
- const MethodAttributes propertyMethodAttr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
- const MethodAttributes virtualPropertyMethodAttr = propertyMethodAttr | MethodAttributes.Virtual | MethodAttributes.Final;
- const MethodAttributes virtualMemberMethod = MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.Final;
-
- #region IGeneratedStore
- typeBuilder.AddInterfaceImplementation(typeof(IGeneratedStore));
-
- var IGeneratedStore_t = typeof(IGeneratedStore);
- var IGeneratedStore_GetImpl = IGeneratedStore_t.GetProperty(nameof(IGeneratedStore.Impl)).GetGetMethod();
- var IGeneratedStore_GetType = IGeneratedStore_t.GetProperty(nameof(IGeneratedStore.Type)).GetGetMethod();
- var IGeneratedStore_GetParent = IGeneratedStore_t.GetProperty(nameof(IGeneratedStore.Parent)).GetGetMethod();
- var IGeneratedStore_GetValues = IGeneratedStore_t.GetProperty(nameof(IGeneratedStore.Values)).GetGetMethod();
- var IGeneratedStore_SetValues = IGeneratedStore_t.GetProperty(nameof(IGeneratedStore.Values)).GetSetMethod();
- var IGeneratedStore_OnReload = IGeneratedStore_t.GetMethod(nameof(IGeneratedStore.OnReload));
-
- #region IGeneratedStore.OnReload
- var onReload = typeBuilder.DefineMethod($"<>{nameof(IGeneratedStore.OnReload)}", virtualMemberMethod, null, Type.EmptyTypes);
- typeBuilder.DefineMethodOverride(onReload, IGeneratedStore_OnReload);
- if (baseOnReload != null) typeBuilder.DefineMethodOverride(onReload, baseOnReload);
-
- {
- var il = onReload.GetILGenerator();
-
- if (baseOnReload != null)
- {
- il.Emit(OpCodes.Ldarg_0); // load this
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, baseOnReload); // load impl field
- }
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IGeneratedStore.Impl
- var implProp = typeBuilder.DefineProperty(nameof(IGeneratedStore.Impl), PropertyAttributes.None, typeof(Impl), null);
- var implPropGet = typeBuilder.DefineMethod($"<g>{nameof(IGeneratedStore.Impl)}", virtualPropertyMethodAttr, implProp.PropertyType, Type.EmptyTypes);
- implProp.SetGetMethod(implPropGet);
- typeBuilder.DefineMethodOverride(implPropGet, IGeneratedStore_GetImpl);
-
- {
- var il = implPropGet.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0); // load this
- il.Emit(OpCodes.Ldfld, implField); // load impl field
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IGeneratedStore.Type
- var typeProp = typeBuilder.DefineProperty(nameof(IGeneratedStore.Type), PropertyAttributes.None, typeof(Type), null);
- var typePropGet = typeBuilder.DefineMethod($"<g>{nameof(IGeneratedStore.Type)}", virtualPropertyMethodAttr, typeProp.PropertyType, Type.EmptyTypes);
- typeProp.SetGetMethod(typePropGet);
- typeBuilder.DefineMethodOverride(typePropGet, IGeneratedStore_GetType);
-
- {
- var il = typePropGet.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0); // load this
- il.Emit(OpCodes.Ldfld, typeField); // load impl field
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IGeneratedStore.Parent
- var parentProp = typeBuilder.DefineProperty(nameof(IGeneratedStore.Parent), PropertyAttributes.None, typeof(IGeneratedStore), null);
- var parentPropGet = typeBuilder.DefineMethod($"<g>{nameof(IGeneratedStore.Parent)}", virtualPropertyMethodAttr, parentProp.PropertyType, Type.EmptyTypes);
- parentProp.SetGetMethod(parentPropGet);
- typeBuilder.DefineMethodOverride(parentPropGet, IGeneratedStore_GetParent);
-
- {
- var il = parentPropGet.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0); // load this
- il.Emit(OpCodes.Ldfld, parentField); // load impl field
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IGeneratedStore.Values
- var valuesProp = typeBuilder.DefineProperty(nameof(IGeneratedStore.Values), PropertyAttributes.None, typeof(Value), null);
- var valuesPropGet = typeBuilder.DefineMethod($"<g>{nameof(IGeneratedStore.Values)}", virtualPropertyMethodAttr, valuesProp.PropertyType, Type.EmptyTypes);
- var valuesPropSet = typeBuilder.DefineMethod($"<s>{nameof(IGeneratedStore.Values)}", virtualPropertyMethodAttr, null, new[] { valuesProp.PropertyType });
- valuesProp.SetGetMethod(valuesPropGet);
- typeBuilder.DefineMethodOverride(valuesPropGet, IGeneratedStore_GetValues);
- valuesProp.SetSetMethod(valuesPropSet);
- typeBuilder.DefineMethodOverride(valuesPropSet, IGeneratedStore_SetValues);
-
- { // this is non-locking because the only code that will call this will already own the correct lock
- var il = valuesPropGet.GetILGenerator();
-
- var Map_Add = typeof(Map).GetMethod(nameof(Map.Add));
-
- il.Emit(OpCodes.Call, typeof(Value).GetMethod(nameof(Value.Map)));
- // the map is now at the top of the stack
-
- var locals = new List<LocalBuilder>();
-
- LocalBuilder GetLocal(Type ty, int i = 0)
- {
- var builder = locals.Where(b => b.LocalType == ty).Skip(i).FirstOrDefault();
- if (builder == null)
- {
- builder = il.DeclareLocal(ty);
- locals.Add(builder);
- }
- return builder;
- }
-
- foreach (var member in structure)
- {
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Ldstr, member.Name); // TODO: make this behave with annotations
- EmitSerializeMember(il, member, GetLocal);
- il.Emit(OpCodes.Call, Map_Add);
- }
-
- // the map is still at the top of the stack, return it
-
- il.Emit(OpCodes.Ret);
- }
-
- { // this is non-locking because the only code that will call this will already own the correct lock
- var il = valuesPropSet.GetILGenerator();
-
- var Map_t = typeof(Map);
- var Map_TryGetValue = Map_t.GetMethod(nameof(Map.TryGetValue));
- var Object_GetType = typeof(object).GetMethod(nameof(Object.GetType));
-
- var valueLocal = il.DeclareLocal(typeof(Value));
-
- var nonNull = il.DefineLabel();
-
- il.Emit(OpCodes.Ldarg_1);
- il.Emit(OpCodes.Brtrue, nonNull);
-
- EmitLogError(il, "Attempting to deserialize null", tailcall: true);
- il.Emit(OpCodes.Ret);
-
- il.MarkLabel(nonNull);
- il.Emit(OpCodes.Ldarg_1);
- il.Emit(OpCodes.Isinst, Map_t);
- il.Emit(OpCodes.Dup); // duplicate cloned value
- var notMapError = il.DefineLabel();
- il.Emit(OpCodes.Brtrue, notMapError);
- // handle error
- il.Emit(OpCodes.Pop); // removes the duplicate value
- EmitLogError(il, $"Invalid root for deserializing {type.FullName}", tailcall: true,
- expected: il => EmitTypeof(il, Map_t), found: il =>
- {
- il.Emit(OpCodes.Ldarg_1);
- il.Emit(OpCodes.Callvirt, Object_GetType);
- });
- il.Emit(OpCodes.Ret);
-
- var nextLabel = notMapError;
-
- var locals = new List<LocalBuilder>();
-
- LocalBuilder GetLocal(Type ty, int i = 0)
- {
- var builder = locals.Where(b => b.LocalType == ty).Skip(i).FirstOrDefault();
- if (builder == null)
- {
- builder = il.DeclareLocal(ty);
- locals.Add(builder);
- }
- return builder;
- }
-
- // head of stack is Map instance
- foreach (var member in structure)
- {
- il.MarkLabel(nextLabel);
- nextLabel = il.DefineLabel();
- var endErrorLabel = il.DefineLabel();
-
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Ldstr, member.Name);
- il.Emit(OpCodes.Ldloca_S, valueLocal);
- il.Emit(OpCodes.Call, Map_TryGetValue);
- il.Emit(OpCodes.Brtrue_S, endErrorLabel);
-
- EmitLogError(il, $"Missing key {member.Name}", tailcall: false);
- il.Emit(OpCodes.Br, nextLabel);
-
- il.MarkLabel(endErrorLabel);
-
- il.Emit(OpCodes.Ldloc_S, valueLocal);
- EmitDeserializeMember(il, member, nextLabel, il => il.Emit(OpCodes.Ldloc_S, valueLocal), GetLocal);
- }
-
- il.MarkLabel(nextLabel);
-
- il.Emit(OpCodes.Pop); // removes the duplicate value
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #endregion
-
- #region IConfigStore
- typeBuilder.AddInterfaceImplementation(typeof(IConfigStore));
-
- var IConfigStore_t = typeof(IConfigStore);
- var IConfigStore_GetSyncObject = IConfigStore_t.GetProperty(nameof(IConfigStore.SyncObject)).GetGetMethod();
- var IConfigStore_GetWriteSyncObject = IConfigStore_t.GetProperty(nameof(IConfigStore.WriteSyncObject)).GetGetMethod();
- var IConfigStore_WriteTo = IConfigStore_t.GetMethod(nameof(IConfigStore.WriteTo));
- var IConfigStore_ReadFrom = IConfigStore_t.GetMethod(nameof(IConfigStore.ReadFrom));
-
- #region IConfigStore.SyncObject
- var syncObjProp = typeBuilder.DefineProperty(nameof(IConfigStore.SyncObject), PropertyAttributes.None, typeof(WaitHandle), null);
- var syncObjPropGet = typeBuilder.DefineMethod($"<g>{nameof(IConfigStore.SyncObject)}", virtualPropertyMethodAttr, syncObjProp.PropertyType, Type.EmptyTypes);
- syncObjProp.SetGetMethod(syncObjPropGet);
- typeBuilder.DefineMethodOverride(syncObjPropGet, IConfigStore_GetSyncObject);
-
- {
- var il = syncObjPropGet.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, Impl.FindImplMethod);
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, Impl.SyncObjectGetMethod);
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IConfigStore.WriteSyncObject
- var writeSyncObjProp = typeBuilder.DefineProperty(nameof(IConfigStore.WriteSyncObject), PropertyAttributes.None, typeof(WaitHandle), null);
- var writeSyncObjPropGet = typeBuilder.DefineMethod($"<g>{nameof(IConfigStore.WriteSyncObject)}", virtualPropertyMethodAttr, writeSyncObjProp.PropertyType, Type.EmptyTypes);
- writeSyncObjProp.SetGetMethod(writeSyncObjPropGet);
- typeBuilder.DefineMethodOverride(writeSyncObjPropGet, IConfigStore_GetWriteSyncObject);
-
- {
- var il = writeSyncObjPropGet.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, Impl.FindImplMethod);
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, Impl.WriteSyncObjectGetMethod);
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IConfigStore.WriteTo
- var writeTo = typeBuilder.DefineMethod($"<>{nameof(IConfigStore.WriteTo)}", virtualMemberMethod, null, new[] { typeof(IConfigProvider) });
- typeBuilder.DefineMethodOverride(writeTo, IConfigStore_WriteTo);
-
- {
- var il = writeTo.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, Impl.FindImplMethod);
- il.Emit(OpCodes.Ldarg_1);
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, Impl.WriteToMethod);
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #region IConfigStore.ReadFrom
- var readFrom = typeBuilder.DefineMethod($"<>{nameof(IConfigStore.ReadFrom)}", virtualMemberMethod, null, new[] { typeof(IConfigProvider) });
- typeBuilder.DefineMethodOverride(readFrom, IConfigStore_ReadFrom);
-
- {
- var il = readFrom.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, Impl.FindImplMethod);
- il.Emit(OpCodes.Ldarg_1);
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, Impl.ReadFromMethod);
- il.Emit(OpCodes.Ret);
- }
- #endregion
- #endregion
-
- #region Changed
- var coreChanged = typeBuilder.DefineMethod(
- "<>Changed",
- MethodAttributes.Public | MethodAttributes.HideBySig,
- null, Type.EmptyTypes);
-
- {
- var il = coreChanged.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, Impl.ImplSignalChangedMethod);
- il.Emit(OpCodes.Ret); // simply call our impl's SignalChanged method and return
- }
-
- if (baseChanged != null) {
- var changedMethod = typeBuilder.DefineMethod( // copy to override baseChanged
- baseChanged.Name,
- MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.Final | MethodAttributes.HideBySig,
- null, Type.EmptyTypes);
- typeBuilder.DefineMethodOverride(changedMethod, baseChanged);
-
- {
- var il = changedMethod.GetILGenerator();
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, baseChanged); // call base
-
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, coreChanged); // call back to the core change method
-
- il.Emit(OpCodes.Ret);
- }
-
- coreChanged = changedMethod; // switch to calling this version instead of just the default
- }
- #endregion
-
- // TODO: generate overrides for all the virtual properties
-
- var genType = typeBuilder.CreateType();
-
- var parentParam = Expression.Parameter(typeof(IGeneratedStore), "parent");
- var creatorDel = Expression.Lambda<Func<IGeneratedStore, IConfigStore>>(
- Expression.New(ctor, parentParam), parentParam
- ).Compile();
-
- { // register a member map
- var dict = new Dictionary<string, Type>();
- foreach (var member in structure)
- dict.Add(member.Name, member.Type);
- memberMaps.Add(type, dict);
- }
-
- return creatorDel;
- }
-
- #region Utility
- private static void EmitLogError(ILGenerator il, string message, bool tailcall = false, Action<ILGenerator> expected = null, Action<ILGenerator> found = null)
- {
- if (expected == null) expected = il => il.Emit(OpCodes.Ldnull);
- if (found == null) found = il => il.Emit(OpCodes.Ldnull);
-
- expected(il);
- found(il);
- il.Emit(OpCodes.Ldstr, message);
- if (tailcall) il.Emit(OpCodes.Tailcall);
- il.Emit(OpCodes.Call, LogErrorMethod);
- }
-
- private static readonly MethodInfo Type_GetTypeFromHandle = typeof(Type).GetMethod(nameof(Type.GetTypeFromHandle));
- private static void EmitTypeof(ILGenerator il, Type type)
- {
- il.Emit(OpCodes.Ldtoken, type);
- il.Emit(OpCodes.Call, Type_GetTypeFromHandle);
- }
-
- private static Type Decimal_t = typeof(decimal);
- private static ConstructorInfo Decimal_FromFloat = Decimal_t.GetConstructor(new[] { typeof(float) });
- private static ConstructorInfo Decimal_FromDouble = Decimal_t.GetConstructor(new[] { typeof(double) });
- private static ConstructorInfo Decimal_FromInt = Decimal_t.GetConstructor(new[] { typeof(int) });
- private static ConstructorInfo Decimal_FromUInt = Decimal_t.GetConstructor(new[] { typeof(uint) });
- private static ConstructorInfo Decimal_FromLong = Decimal_t.GetConstructor(new[] { typeof(long) });
- private static ConstructorInfo Decimal_FromULong = Decimal_t.GetConstructor(new[] { typeof(ulong) });
- private static void EmitNumberConvertTo(ILGenerator il, Type to, Type from)
- { // WARNING: THIS USES THE NO-OVERFLOW OPCODES
- if (to == from) return;
- if (to == Decimal_t)
- {
- if (from == typeof(float)) il.Emit(OpCodes.Newobj, Decimal_FromFloat);
- else if (from == typeof(double)) il.Emit(OpCodes.Newobj, Decimal_FromDouble);
- else if (from == typeof(long)) il.Emit(OpCodes.Newobj, Decimal_FromLong);
- else if (from == typeof(ulong)) il.Emit(OpCodes.Newobj, Decimal_FromULong);
- else if (from == typeof(int)) il.Emit(OpCodes.Newobj, Decimal_FromInt);
- else if (from == typeof(uint)) il.Emit(OpCodes.Newobj, Decimal_FromUInt);
- else if (from == typeof(IntPtr))
- {
- EmitNumberConvertTo(il, typeof(long), from);
- EmitNumberConvertTo(il, to, typeof(long));
- }
- else if (from == typeof(UIntPtr))
- {
- EmitNumberConvertTo(il, typeof(ulong), from);
- EmitNumberConvertTo(il, to, typeof(ulong));
- }
- else
- { // if the source is anything else, we first convert to int because that can contain all other values
- EmitNumberConvertTo(il, typeof(int), from);
- EmitNumberConvertTo(il, to, typeof(int));
- };
- }
- else if (from == Decimal_t)
- {
- if (to == typeof(IntPtr))
- {
- EmitNumberConvertTo(il, typeof(long), from);
- EmitNumberConvertTo(il, to, typeof(long));
- }
- else if (to == typeof(UIntPtr))
- {
- EmitNumberConvertTo(il, typeof(ulong), from);
- EmitNumberConvertTo(il, to, typeof(ulong));
- }
- else
- {
- var method = Decimal_t.GetMethod($"To{to.Name}"); // conveniently, this is the pattern of the to* names
- il.Emit(OpCodes.Call, method);
- }
- }
- else if (to == typeof(IntPtr)) il.Emit(OpCodes.Conv_I);
- else if (to == typeof(UIntPtr)) il.Emit(OpCodes.Conv_U);
- else if (to == typeof(sbyte)) il.Emit(OpCodes.Conv_I1);
- else if (to == typeof(byte)) il.Emit(OpCodes.Conv_U1);
- else if (to == typeof(short)) il.Emit(OpCodes.Conv_I2);
- else if (to == typeof(ushort)) il.Emit(OpCodes.Conv_U2);
- else if (to == typeof(int)) il.Emit(OpCodes.Conv_I4);
- else if (to == typeof(uint)) il.Emit(OpCodes.Conv_U4);
- else if (to == typeof(long)) il.Emit(OpCodes.Conv_I8);
- else if (to == typeof(ulong)) il.Emit(OpCodes.Conv_U8);
- else if (to == typeof(float))
- {
- if (from == typeof(byte)
- || from == typeof(ushort)
- || from == typeof(uint)
- || from == typeof(ulong)
- || from == typeof(UIntPtr)) il.Emit(OpCodes.Conv_R_Un);
- il.Emit(OpCodes.Conv_R4);
- }
- else if (to == typeof(double))
- {
- if (from == typeof(byte)
- || from == typeof(ushort)
- || from == typeof(uint)
- || from == typeof(ulong)
- || from == typeof(UIntPtr)) il.Emit(OpCodes.Conv_R_Un);
- il.Emit(OpCodes.Conv_R8);
- }
- }
-
- private static void EmitCreateChildGenerated(ILGenerator il, Type childType)
- {
- var method = CreateGParent.MakeGenericMethod(childType);
- il.Emit(OpCodes.Ldarg_0);
- il.Emit(OpCodes.Call, method);
- }
- #endregion
-
-
- private static readonly MethodInfo LogErrorMethod = typeof(GeneratedStore).GetMethod(nameof(LogError), BindingFlags.NonPublic | BindingFlags.Static);
- internal static void LogError(Type expected, Type found, string message)
- {
- Logger.config.Notice($"{message}{(expected == null ? "" : $" (expected {expected}, found {found?.ToString() ?? "null"})")}");
- }
-
- // expects the this param to be on the stack
- private static void EmitMemberFix(ILGenerator il, SerializedMemberInfo member)
- {
- // TODO: impl
- }
-
- #region Serialize
-
- // emit takes no args, leaves Value at top of stack
- private static void EmitSerializeMember(ILGenerator il, SerializedMemberInfo member, Func<Type, int, LocalBuilder> GetLocal)
- {
- void EmitLoad()
- {
- il.Emit(OpCodes.Ldarg_0); // load this
-
- if (member.IsField)
- il.Emit(OpCodes.Ldfld, member.Member as FieldInfo);
- else
- { // member is a property
- var prop = member.Member as PropertyInfo;
- var getter = prop.GetGetMethod();
- if (getter == null) throw new InvalidOperationException($"Property {member.Name} does not have a getter and is not ignored");
-
- il.Emit(OpCodes.Call, getter);
- }
- }
-
- // TODO: implement Nullable<T>
-
- EmitLoad();
-
- var endSerialize = il.DefineLabel();
-
- if (!member.Type.IsValueType)
- {
- var passedNull = il.DefineLabel();
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Brtrue, passedNull);
-
- il.Emit(OpCodes.Pop);
- il.Emit(OpCodes.Ldnull);
- il.Emit(OpCodes.Br, endSerialize);
-
- il.MarkLabel(passedNull);
- }
-
- var targetType = GetExpectedValueTypeForType(member.Type);
- if (targetType == typeof(Text))
- { // only happens when arg is a string or char
- var TextCreate = typeof(Value).GetMethod(nameof(Value.Text));
- if (member.Type == typeof(char))
- {
- var strFromChar = typeof(char).GetMethod(nameof(char.ToString), new[] { typeof(char) });
- il.Emit(OpCodes.Call, strFromChar);
- }
- il.Emit(OpCodes.Call, TextCreate);
- }
- else if (targetType == typeof(Boolean))
- {
- var BoolCreate = typeof(Value).GetMethod(nameof(Value.Bool));
- il.Emit(OpCodes.Call, BoolCreate);
- }
- else if (targetType == typeof(Integer))
- {
- var IntCreate = typeof(Value).GetMethod(nameof(Value.Integer));
- EmitNumberConvertTo(il, IntCreate.GetParameters()[0].ParameterType, member.Type);
- il.Emit(OpCodes.Call, IntCreate);
- }
- else if (targetType == typeof(FloatingPoint))
- {
- var FloatCreate = typeof(Value).GetMethod(nameof(Value.Float));
- EmitNumberConvertTo(il, FloatCreate.GetParameters()[0].ParameterType, member.Type);
- il.Emit(OpCodes.Call, FloatCreate);
- }
- else if (targetType == typeof(List))
- {
- // TODO: impl this
- il.Emit(OpCodes.Pop);
- il.Emit(OpCodes.Ldnull);
- }
- else if (targetType == typeof(Map))
- {
- // TODO: support other aggregate types
-
- // for now, we assume that its a generated type implementing IGeneratedStore
- var IGeneratedStore_ValueGet = typeof(IGeneratedStore).GetProperty(nameof(IGeneratedStore.Values)).GetGetMethod();
- il.Emit(OpCodes.Callvirt, IGeneratedStore_ValueGet);
- }
-
- il.MarkLabel(endSerialize);
-
- // TODO: implement converters
- }
- #endregion
-
- #region Deserialize
-
- private static Type GetExpectedValueTypeForType(Type valT)
- {
- if (typeof(Value).IsAssignableFrom(valT)) // this is a Value subtype
- return valT;
- if (valT == typeof(string)
- || valT == typeof(char)) return typeof(Text);
- if (valT == typeof(bool)) return typeof(Boolean);
- if (valT == typeof(byte)
- || valT == typeof(sbyte)
- || valT == typeof(short)
- || valT == typeof(ushort)
- || valT == typeof(int)
- || valT == typeof(uint)
- || valT == typeof(long)
- || valT == typeof(ulong)) return typeof(Integer);
- if (valT == typeof(float)
- || valT == typeof(double)
- || valT == typeof(decimal)) return typeof(FloatingPoint);
- if (typeof(IEnumerable).IsAssignableFrom(valT)) return typeof(List);
-
- // TODO: fill this out the rest of the way
- // TODO: support converters
-
- return typeof(Map); // default for various objects
- }
-
- private static void EmitDeserializeGeneratedValue(ILGenerator il, Type targetType, Type srcType, Func<Type, int, LocalBuilder> GetLocal)
- {
- var IGeneratedStore_ValueSet = typeof(IGeneratedStore).GetProperty(nameof(IGeneratedStore.Values)).GetSetMethod();
-
- var valuel = GetLocal(srcType, 0);
- il.Emit(OpCodes.Stloc, valuel);
- EmitCreateChildGenerated(il, targetType);
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Ldloc, valuel);
- il.Emit(OpCodes.Callvirt, IGeneratedStore_ValueSet);
- }
-
- // top of stack is the Value to deserialize; the type will be as returned from GetExpectedValueTypeForType
- // after, top of stack will be thing to write to field
- private static void EmitDeserializeValue(ILGenerator il, Type targetType, Type expected, Func<Type, int, LocalBuilder> GetLocal)
- {
- if (typeof(Value).IsAssignableFrom(targetType)) return; // do nothing
-
- if (expected == typeof(Text))
- {
- var getter = expected.GetProperty(nameof(Text.Value)).GetGetMethod();
- il.Emit(OpCodes.Call, getter);
- if (targetType == typeof(char))
- {
- var strIndex = typeof(string).GetProperty("Chars").GetGetMethod(); // string's indexer is specially named Chars
- il.Emit(OpCodes.Ldc_I4_0);
- il.Emit(OpCodes.Call, strIndex);
- }
- }
- else if (expected == typeof(Boolean))
- {
- var getter = expected.GetProperty(nameof(Boolean.Value)).GetGetMethod();
- il.Emit(OpCodes.Call, getter);
- }
- else if (expected == typeof(Integer))
- {
- var getter = expected.GetProperty(nameof(Integer.Value)).GetGetMethod();
- il.Emit(OpCodes.Call, getter);
- EmitNumberConvertTo(il, targetType, getter.ReturnType);
- }
- else if (expected == typeof(FloatingPoint))
- {
- var getter = expected.GetProperty(nameof(FloatingPoint.Value)).GetGetMethod();
- il.Emit(OpCodes.Call, getter);
- EmitNumberConvertTo(il, targetType, getter.ReturnType);
- } // TODO: implement stuff for lists and maps of various types (probably call out somewhere else to figure out what to do)
- else if (expected == typeof(Map))
- {
- EmitDeserializeGeneratedValue(il, targetType, expected, GetLocal);
- }
- else // TODO: support converters
- {
- il.Emit(OpCodes.Pop);
- il.Emit(OpCodes.Ldnull);
- }
- }
-
- // emit takes the value being deserialized, logs on error, leaves nothing on stack
- private static void EmitDeserializeMember(ILGenerator il, SerializedMemberInfo member, Label nextLabel, Action<ILGenerator> getValue, Func<Type, int, LocalBuilder> GetLocal)
- {
- var Object_GetType = typeof(object).GetMethod(nameof(Object.GetType));
-
- var implLabel = il.DefineLabel();
- var passedTypeCheck = il.DefineLabel();
- var expectType = GetExpectedValueTypeForType(member.Type);
-
- void EmitStore(Action<ILGenerator> value)
- {
- il.Emit(OpCodes.Ldarg_0); // load this
- value(il);
-
- if (member.IsField)
- il.Emit(OpCodes.Stfld, member.Member as FieldInfo);
- else
- { // member is a property
- var prop = member.Member as PropertyInfo;
- var setter = prop.GetSetMethod();
- if (setter == null) throw new InvalidOperationException($"Property {member.Name} does not have a setter and is not ignored");
-
- il.Emit(OpCodes.Call, setter);
- }
- }
-
- il.Emit(OpCodes.Dup);
- il.Emit(OpCodes.Brtrue_S, implLabel); // null check
-
- // TODO: support Nullable<T>
-
- if (member.Type.IsValueType)
- {
- il.Emit(OpCodes.Pop);
- EmitLogError(il, $"Member {member.Name} ({member.Type}) not nullable", tailcall: false,
- expected: il => EmitTypeof(il, expectType));
- il.Emit(OpCodes.Br, nextLabel);
- }
- else
- {
- il.Emit(OpCodes.Pop);
- EmitStore(il => il.Emit(OpCodes.Ldnull));
- il.Emit(OpCodes.Br, nextLabel);
- }
-
- il.MarkLabel(implLabel);
-
- il.Emit(OpCodes.Isinst, expectType); //replaces on stack
- il.Emit(OpCodes.Dup); // duplicate cloned value
- il.Emit(OpCodes.Brtrue, passedTypeCheck); // null check
-
- var errorHandle = il.DefineLabel();
-
- // special cases to handle coersion between Float and Int
- if (expectType == typeof(FloatingPoint))
- {
- var specialTypeCheck = il.DefineLabel();
- il.Emit(OpCodes.Pop);
- getValue(il);
- il.Emit(OpCodes.Isinst, typeof(Integer)); //replaces on stack
- il.Emit(OpCodes.Dup); // duplicate cloned value
- il.Emit(OpCodes.Brfalse, errorHandle); // null check
-
- var Integer_CoerceToFloat = typeof(Integer).GetMethod(nameof(Integer.AsFloat));
- il.Emit(OpCodes.Call, Integer_CoerceToFloat);
-
- il.Emit(OpCodes.Br, passedTypeCheck);
- }
- else if (expectType == typeof(Integer))
- {
- var specialTypeCheck = il.DefineLabel();
- il.Emit(OpCodes.Pop);
- getValue(il);
- il.Emit(OpCodes.Isinst, typeof(FloatingPoint)); //replaces on stack
- il.Emit(OpCodes.Dup); // duplicate cloned value
- il.Emit(OpCodes.Brfalse, errorHandle); // null check
-
- var Float_CoerceToInt = typeof(FloatingPoint).GetMethod(nameof(FloatingPoint.AsInteger));
- il.Emit(OpCodes.Call, Float_CoerceToInt);
-
- il.Emit(OpCodes.Br, passedTypeCheck);
- }
-
- il.MarkLabel(errorHandle);
- il.Emit(OpCodes.Pop);
- EmitLogError(il, $"Unexpected type deserializing {member.Name}", tailcall: false,
- expected: il => EmitTypeof(il, expectType), found: il =>
- {
- getValue(il);
- il.Emit(OpCodes.Callvirt, Object_GetType);
- });
- il.Emit(OpCodes.Br, nextLabel);
-
- il.MarkLabel(passedTypeCheck);
-
- var local = GetLocal(member.Type, 0);
- EmitDeserializeValue(il, member.Type, expectType, GetLocal);
- il.Emit(OpCodes.Stloc, local);
- EmitStore(il => il.Emit(OpCodes.Ldloc, local));
- }
- #endregion
- }
- }
|