Nikita Tsukanov
7 years ago
14 changed files with 348 additions and 27 deletions
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using System; |
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using System.Linq.Expressions; |
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using System.Reflection; |
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|
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namespace Avalonia.Data.Core |
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{ |
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public class ClrPropertyInfo : IPropertyInfo |
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{ |
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private readonly Func<object, object> _getter; |
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private readonly Action<object, object> _setter; |
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|
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public ClrPropertyInfo(string name, Func<object, object> getter, Action<object, object> setter) |
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{ |
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_getter = getter; |
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_setter = setter; |
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Name = name; |
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} |
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|
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public string Name { get; } |
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public object Get(object target) |
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{ |
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if (_getter == null) |
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throw new NotSupportedException("Property " + Name + " doesn't have a getter"); |
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return _getter(target); |
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} |
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|
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public void Set(object target, object value) |
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{ |
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if (_setter == null) |
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throw new NotSupportedException("Property " + Name + " doesn't have a setter"); |
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_setter(target, value); |
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} |
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|
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public bool CanSet => _setter != null; |
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public bool CanGet => _getter != null; |
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} |
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|
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public class ReflectionClrPropertyInfo : ClrPropertyInfo |
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{ |
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static Action<object, object> CreateSetter(PropertyInfo info) |
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{ |
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if (info.SetMethod == null) |
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return null; |
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var target = Expression.Parameter(typeof(object), "target"); |
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var value = Expression.Parameter(typeof(object), "value"); |
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return Expression.Lambda<Action<object, object>>( |
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Expression.Call(Expression.Convert(target, info.DeclaringType), info.SetMethod, |
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Expression.Convert(value, info.SetMethod.GetParameters()[0].ParameterType)), |
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target, value) |
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.Compile(); |
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} |
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|
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static Func<object, object> CreateGetter(PropertyInfo info) |
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{ |
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if (info.GetMethod == null) |
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return null; |
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var target = Expression.Parameter(typeof(object), "target"); |
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return Expression.Lambda<Func<object, object>>( |
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Expression.Convert(Expression.Call(Expression.Convert(target, info.DeclaringType), info.GetMethod), |
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typeof(object))) |
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.Compile(); |
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} |
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|
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public ReflectionClrPropertyInfo(PropertyInfo info) : base(info.Name, |
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CreateGetter(info), CreateSetter(info)) |
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{ |
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|
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} |
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} |
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} |
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@ -0,0 +1,11 @@ |
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namespace Avalonia.Data.Core |
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{ |
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public interface IPropertyInfo |
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{ |
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string Name { get; } |
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object Get(object target); |
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void Set(object target, object value); |
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bool CanSet { get; } |
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bool CanGet { get; } |
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} |
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} |
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@ -0,0 +1,21 @@ |
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using XamlIl.Transform; |
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using XamlIl.TypeSystem; |
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|
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namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions |
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{ |
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class AvaloniaXamlIlCompilerConfiguration : XamlIlTransformerConfiguration |
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{ |
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public XamlIlClrPropertyInfoEmitter ClrPropertyEmitter { get; } |
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|
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public AvaloniaXamlIlCompilerConfiguration(IXamlIlTypeSystem typeSystem, |
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IXamlIlAssembly defaultAssembly, |
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XamlIlLanguageTypeMappings typeMappings, |
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XamlIlXmlnsMappings xmlnsMappings, |
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XamlIlValueConverter customValueConverter, |
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XamlIlClrPropertyInfoEmitter clrPropertyEmitter) : base(typeSystem, defaultAssembly, typeMappings, xmlnsMappings, customValueConverter) |
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{ |
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ClrPropertyEmitter = clrPropertyEmitter; |
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AddExtra(ClrPropertyEmitter); |
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} |
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} |
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} |
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@ -0,0 +1,147 @@ |
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers; |
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using XamlIl.Ast; |
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using XamlIl.Transform; |
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using XamlIl.TypeSystem; |
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|
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namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions |
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{ |
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class XamlIlClrPropertyInfoHelper |
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{ |
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class ClrPropertyInfoNode : XamlIlAstNode, IXamlIlAstValueNode |
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{ |
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public ClrPropertyInfoNode(AvaloniaXamlIlWellKnownTypes types, IXamlIlLineInfo lineInfo) : |
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base(lineInfo) |
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{ |
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Type = new XamlIlAstClrTypeReference(this, types.XamlIlTypes.Object, false); |
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} |
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public IXamlIlAstTypeReference Type { get; } |
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} |
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} |
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|
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class XamlIlClrPropertyInfoEmitter |
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{ |
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private readonly IXamlIlTypeBuilder _builder; |
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private Dictionary<string, List<(IXamlIlProperty prop, IXamlIlMethod get)>> _fields |
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= new Dictionary<string, List<(IXamlIlProperty prop, IXamlIlMethod get)>>(); |
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|
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public XamlIlClrPropertyInfoEmitter(IXamlIlTypeBuilder builder) |
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{ |
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_builder = builder; |
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} |
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static string GetKey(IXamlIlProperty property) |
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=> property.Getter.DeclaringType.GetFullName() + "." + property.Name; |
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public IXamlIlType Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen, IXamlIlProperty property) |
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{ |
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var types = context.GetAvaloniaTypes(); |
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IXamlIlMethod Get() |
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{ |
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var key = GetKey(property); |
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if (!_fields.TryGetValue(key, out var lst)) |
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_fields[key] = lst = new List<(IXamlIlProperty prop, IXamlIlMethod get)>(); |
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|
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foreach (var cached in lst) |
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{ |
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if ( |
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((cached.prop.Getter == null && property.Getter == null) || |
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cached.prop.Getter?.Equals(property.Getter) == true) && |
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((cached.prop.Setter == null && property.Setter == null) || |
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cached.prop.Setter?.Equals(property.Setter) == true) |
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) |
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return cached.get; |
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} |
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var name = lst.Count == 0 ? key : key + "_" + Guid.NewGuid().ToString("N"); |
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var field = _builder.DefineField(types.IPropertyInfo, name + "!Field", false, true); |
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var getter = property.Getter == null ? |
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null : |
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_builder.DefineMethod(types.XamlIlTypes.Object, |
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new[] {types.XamlIlTypes.Object}, name + "!Getter", false, true, false); |
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if (getter != null) |
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{ |
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getter.Generator |
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.Ldarg_0() |
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.Castclass(property.Getter.DeclaringType) |
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.EmitCall(property.Getter); |
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if (property.Getter.ReturnType.IsValueType) |
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getter.Generator.Box(property.Getter.ReturnType); |
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getter.Generator.Ret(); |
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} |
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|
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var setter = property.Setter == null ? |
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null : |
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_builder.DefineMethod(types.XamlIlTypes.Void, |
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new[] {types.XamlIlTypes.Object, types.XamlIlTypes.Object}, |
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name + "!Setter", false, true, false); |
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if (setter != null) |
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{ |
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setter.Generator |
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.Ldarg_0() |
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.Castclass(property.Setter.DeclaringType) |
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.Ldarg(1); |
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if (property.Setter.Parameters[0].IsValueType) |
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setter.Generator.Unbox_Any(property.Setter.Parameters[0]); |
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else |
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setter.Generator.Castclass(property.Setter.Parameters[0]); |
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setter.Generator |
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.EmitCall(property.Setter, true) |
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.Ret(); |
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} |
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|
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var get = _builder.DefineMethod(types.IPropertyInfo, Array.Empty<IXamlIlType>(), |
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name + "!Property", true, true, false); |
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|
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|
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var ctor = types.ClrPropertyInfo.Constructors.First(c => |
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c.Parameters.Count == 3 && c.IsStatic == false); |
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var cacheMiss = get.Generator.DefineLabel(); |
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get.Generator |
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.Ldsfld(field) |
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.Brfalse(cacheMiss) |
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.Ldsfld(field) |
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.Ret() |
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.MarkLabel(cacheMiss) |
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.Ldstr(property.Name); |
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|
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void EmitFunc(IXamlIlEmitter emitter, IXamlIlMethod method, IXamlIlType del) |
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{ |
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if (method == null) |
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emitter.Ldnull(); |
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else |
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{ |
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emitter |
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.Ldnull() |
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.Ldftn(method) |
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.Newobj(del.Constructors.First(c => |
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c.Parameters.Count == 2 && |
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c.Parameters[0].Equals(context.Configuration.WellKnownTypes.Object))); |
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} |
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} |
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|
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EmitFunc(get.Generator, getter, ctor.Parameters[1]); |
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EmitFunc(get.Generator, setter, ctor.Parameters[2]); |
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get.Generator |
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.Newobj(ctor) |
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.Stsfld(field) |
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.Ldsfld(field) |
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.Ret(); |
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lst.Add((property, get)); |
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return get; |
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} |
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|
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codeGen.EmitCall(Get()); |
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return types.IPropertyInfo; |
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} |
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} |
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} |
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@ -1 +1 @@ |
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Subproject commit 610cda30c69e32e83c8235060606480904c937bc |
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Subproject commit 3ea474b672ff63629300c36a9644caac2b74a1f2 |
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