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@ -3,41 +3,45 @@ using System.Collections.Generic; |
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using System.Globalization; |
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using System.Linq; |
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using Avalonia.Markup.Parsers; |
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using XamlIl; |
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using XamlIl.Ast; |
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using XamlIl.Transform; |
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using XamlIl.Transform.Transformers; |
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using XamlIl.TypeSystem; |
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using XamlX; |
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using XamlX.Ast; |
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using XamlX.Emit; |
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using XamlX.IL; |
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using XamlX.Transform; |
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using XamlX.Transform.Transformers; |
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using XamlX.TypeSystem; |
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namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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{ |
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class AvaloniaXamlIlSelectorTransformer : IXamlIlAstTransformer |
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using XamlParseException = XamlX.XamlParseException; |
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using XamlLoadException = XamlX.XamlLoadException; |
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class AvaloniaXamlIlSelectorTransformer : IXamlAstTransformer |
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{ |
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public IXamlIlAstNode Transform(XamlIlAstTransformationContext context, IXamlIlAstNode node) |
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public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node) |
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{ |
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if (!(node is XamlIlAstObjectNode on && on.Type.GetClrType().FullName == "Avalonia.Styling.Style")) |
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if (!(node is XamlAstObjectNode on && on.Type.GetClrType().FullName == "Avalonia.Styling.Style")) |
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return node; |
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var pn = on.Children.OfType<XamlIlAstXamlPropertyValueNode>() |
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var pn = on.Children.OfType<XamlAstXamlPropertyValueNode>() |
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.FirstOrDefault(p => p.Property.GetClrProperty().Name == "Selector"); |
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if (pn == null) |
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return node; |
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if (pn.Values.Count != 1) |
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throw new XamlIlParseException("Selector property should should have exactly one value", node); |
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throw new XamlParseException("Selector property should should have exactly one value", node); |
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if (pn.Values[0] is XamlIlSelectorNode) |
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//Deja vu. I've just been in this place before
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return node; |
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if (!(pn.Values[0] is XamlIlAstTextNode tn)) |
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throw new XamlIlParseException("Selector property should be a text node", node); |
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if (!(pn.Values[0] is XamlAstTextNode tn)) |
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throw new XamlParseException("Selector property should be a text node", node); |
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var selectorType = pn.Property.GetClrProperty().Getter.ReturnType; |
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var initialNode = new XamlIlSelectorInitialNode(node, selectorType); |
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XamlIlSelectorNode Create(IEnumerable<SelectorGrammar.ISyntax> syntax, |
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Func<string, string, XamlIlAstClrTypeReference> typeResolver) |
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Func<string, string, XamlAstClrTypeReference> typeResolver) |
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{ |
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XamlIlSelectorNode result = initialNode; |
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XamlIlOrSelectorNode results = null; |
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@ -63,18 +67,18 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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var type = result?.TargetType; |
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if (type == null) |
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throw new XamlIlParseException("Property selectors must be applied to a type.", node); |
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throw new XamlParseException("Property selectors must be applied to a type.", node); |
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var targetProperty = |
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type.GetAllProperties().FirstOrDefault(p => p.Name == property.Property); |
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if (targetProperty == null) |
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throw new XamlIlParseException($"Cannot find '{property.Property}' on '{type}", node); |
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throw new XamlParseException($"Cannot find '{property.Property}' on '{type}", node); |
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if (!XamlIlTransformHelpers.TryGetCorrectlyTypedValue(context, |
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new XamlIlAstTextNode(node, property.Value, context.Configuration.WellKnownTypes.String), |
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if (!XamlTransformHelpers.TryGetCorrectlyTypedValue(context, |
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new XamlAstTextNode(node, property.Value, context.Configuration.WellKnownTypes.String), |
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targetProperty.PropertyType, out var typedValue)) |
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throw new XamlIlParseException( |
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throw new XamlParseException( |
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$"Cannot convert '{property.Value}' to '{targetProperty.PropertyType.GetFqn()}", |
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node); |
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@ -100,7 +104,7 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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result = initialNode; |
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break; |
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default: |
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throw new XamlIlParseException($"Unsupported selector grammar '{i.GetType()}'.", node); |
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throw new XamlParseException($"Unsupported selector grammar '{i.GetType()}'.", node); |
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} |
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} |
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@ -119,15 +123,15 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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} |
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catch (Exception e) |
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{ |
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throw new XamlIlParseException("Unable to parse selector: " + e.Message, node); |
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throw new XamlParseException("Unable to parse selector: " + e.Message, node); |
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} |
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var selector = Create(parsed, (p, n) |
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=> XamlIlTypeReferenceResolver.ResolveType(context, $"{p}:{n}", true, node, true)); |
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=> TypeReferenceResolver.ResolveType(context, $"{p}:{n}", true, node, true)); |
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pn.Values[0] = selector; |
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return new AvaloniaXamlIlTargetTypeMetadataNode(on, |
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new XamlIlAstClrTypeReference(selector, selector.TargetType, false), |
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new XamlAstClrTypeReference(selector, selector.TargetType, false), |
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AvaloniaXamlIlTargetTypeMetadataNode.ScopeTypes.Style); |
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} |
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@ -135,32 +139,32 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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abstract class XamlIlSelectorNode : XamlIlAstNode, IXamlIlAstValueNode, IXamlIlAstEmitableNode |
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abstract class XamlIlSelectorNode : XamlAstNode, IXamlAstValueNode, IXamlAstEmitableNode<IXamlILEmitter, XamlILNodeEmitResult> |
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{ |
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protected XamlIlSelectorNode Previous { get; } |
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public abstract IXamlIlType TargetType { get; } |
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public abstract IXamlType TargetType { get; } |
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public XamlIlSelectorNode(XamlIlSelectorNode previous, |
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IXamlIlLineInfo info = null, |
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IXamlIlType selectorType = null) : base(info ?? previous) |
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IXamlLineInfo info = null, |
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IXamlType selectorType = null) : base(info ?? previous) |
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{ |
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Previous = previous; |
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Type = selectorType == null ? previous.Type : new XamlIlAstClrTypeReference(this, selectorType, false); |
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Type = selectorType == null ? previous.Type : new XamlAstClrTypeReference(this, selectorType, false); |
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} |
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public IXamlIlAstTypeReference Type { get; } |
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public IXamlAstTypeReference Type { get; } |
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public virtual XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public virtual XamlILNodeEmitResult Emit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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if (Previous != null) |
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context.Emit(Previous, codeGen, Type.GetClrType()); |
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DoEmit(context, codeGen); |
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return XamlIlNodeEmitResult.Type(0, Type.GetClrType()); |
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return XamlILNodeEmitResult.Type(0, Type.GetClrType()); |
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} |
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protected abstract void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen); |
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protected abstract void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen); |
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protected void EmitCall(XamlIlEmitContext context, IXamlIlEmitter codeGen, Func<IXamlIlMethod, bool> method) |
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protected void EmitCall(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen, Func<IXamlMethod, bool> method) |
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{ |
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var selectors = context.Configuration.TypeSystem.GetType("Avalonia.Styling.Selectors"); |
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var found = selectors.FindMethod(m => m.IsStatic && m.Parameters.Count > 0 && method(m)); |
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@ -170,27 +174,27 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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class XamlIlSelectorInitialNode : XamlIlSelectorNode |
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{ |
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public XamlIlSelectorInitialNode(IXamlIlLineInfo info, |
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IXamlIlType selectorType) : base(null, info, selectorType) |
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public XamlIlSelectorInitialNode(IXamlLineInfo info, |
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IXamlType selectorType) : base(null, info, selectorType) |
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{ |
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} |
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public override IXamlIlType TargetType => null; |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) => codeGen.Ldnull(); |
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public override IXamlType TargetType => null; |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) => codeGen.Ldnull(); |
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} |
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class XamlIlTypeSelector : XamlIlSelectorNode |
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{ |
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public bool Concrete { get; } |
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public XamlIlTypeSelector(XamlIlSelectorNode previous, IXamlIlType type, bool concrete) : base(previous) |
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public XamlIlTypeSelector(XamlIlSelectorNode previous, IXamlType type, bool concrete) : base(previous) |
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{ |
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TargetType = type; |
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Concrete = concrete; |
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} |
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public override IXamlIlType TargetType { get; } |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public override IXamlType TargetType { get; } |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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var name = Concrete ? "OfType" : "Is"; |
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codeGen.Ldtype(TargetType); |
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@ -217,8 +221,8 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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} |
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public override IXamlIlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public override IXamlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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codeGen.Ldstr(String); |
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var name = _type.ToString(); |
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@ -242,8 +246,8 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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_type = type; |
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} |
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public override IXamlIlType TargetType => null; |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public override IXamlType TargetType => null; |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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var name = _type.ToString(); |
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EmitCall(context, codeGen, |
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@ -260,8 +264,8 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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Argument = argument; |
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} |
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public override IXamlIlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public override IXamlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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context.Emit(Argument, codeGen, Type.GetClrType()); |
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EmitCall(context, codeGen, |
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@ -272,22 +276,22 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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class XamlIlPropertyEqualsSelector : XamlIlSelectorNode |
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{ |
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public XamlIlPropertyEqualsSelector(XamlIlSelectorNode previous, |
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IXamlIlProperty property, |
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IXamlIlAstValueNode value) |
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IXamlProperty property, |
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IXamlAstValueNode value) |
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: base(previous) |
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{ |
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Property = property; |
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Value = value; |
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} |
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public IXamlIlProperty Property { get; set; } |
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public IXamlIlAstValueNode Value { get; set; } |
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public IXamlProperty Property { get; set; } |
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public IXamlAstValueNode Value { get; set; } |
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public override IXamlIlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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public override IXamlType TargetType => Previous?.TargetType; |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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if (!XamlIlAvaloniaPropertyHelper.Emit(context, codeGen, Property)) |
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throw new XamlIlLoadException( |
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throw new XamlLoadException( |
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$"{Property.Name} of {(Property.Setter ?? Property.Getter).DeclaringType.GetFqn()} doesn't seem to be an AvaloniaProperty", |
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this); |
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context.Emit(Value, codeGen, context.Configuration.WellKnownTypes.Object); |
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@ -302,7 +306,7 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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class XamlIlOrSelectorNode : XamlIlSelectorNode |
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{ |
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List<XamlIlSelectorNode> _selectors = new List<XamlIlSelectorNode>(); |
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public XamlIlOrSelectorNode(IXamlIlLineInfo info, IXamlIlType selectorType) : base(null, info, selectorType) |
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public XamlIlOrSelectorNode(IXamlLineInfo info, IXamlType selectorType) : base(null, info, selectorType) |
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{ |
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} |
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@ -311,11 +315,11 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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_selectors.Add(node); |
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} |
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public override IXamlIlType TargetType |
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public override IXamlType TargetType |
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{ |
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get |
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{ |
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IXamlIlType result = null; |
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IXamlType result = null; |
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foreach (var selector in _selectors) |
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{ |
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@ -340,10 +344,10 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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} |
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} |
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protected override void DoEmit(XamlIlEmitContext context, IXamlIlEmitter codeGen) |
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protected override void DoEmit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) |
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{ |
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if (_selectors.Count == 0) |
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throw new XamlIlLoadException("Invalid selector count", this); |
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throw new XamlLoadException("Invalid selector count", this); |
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if (_selectors.Count == 1) |
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{ |
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_selectors[0].Emit(context, codeGen); |
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Jumar Macato
6 years ago
Dan Walmsley