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Added support for x:Array extension, including inline syntax #28
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,54 @@ | ||
using XamlX.Ast; | ||
using XamlX.Emit; | ||
using XamlX.TypeSystem; | ||
|
||
namespace XamlX.IL.Emitters | ||
{ | ||
#if !XAMLX_INTERNAL | ||
public | ||
#endif | ||
class ArrayEmitter : IXamlAstNodeEmitter<IXamlILEmitter, XamlILNodeEmitResult> | ||
{ | ||
public XamlILNodeEmitResult Emit(IXamlAstNode node, XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen) | ||
{ | ||
if (!(node is XamlArrayExtensionNode arrayNode)) | ||
{ | ||
return null; | ||
} | ||
|
||
var type = arrayNode.Type.GetClrType(); | ||
var elementType = type.ArrayElementType; | ||
|
||
codeGen | ||
.Ldc_I4(arrayNode.Elements.Count) | ||
.Newarr(elementType); | ||
|
||
for (int i = 0; i < arrayNode.Elements.Count; i++) | ||
{ | ||
var element = arrayNode.Elements[i]; | ||
|
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if (!elementType.IsAssignableFrom(element.Type.GetClrType())) | ||
{ | ||
throw new XamlLoadException("x:Array element is not assignable to the array element type!", element); | ||
} | ||
|
||
codeGen | ||
.Dup() | ||
.Ldc_I4(i); | ||
|
||
context.Emit(element, codeGen, elementType); | ||
|
||
if (elementType.IsValueType) | ||
{ | ||
codeGen.Stelem(elementType); | ||
} | ||
else | ||
{ | ||
codeGen.Stelem_ref(); | ||
} | ||
} | ||
|
||
return XamlILNodeEmitResult.Type(0, type); | ||
} | ||
} | ||
} |
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34 changes: 34 additions & 0 deletions
34
src/XamlX/Transform/Transformers/ArrayElementTransformer.cs
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,34 @@ | ||
using XamlX.Ast; | ||
using XamlX.TypeSystem; | ||
|
||
namespace XamlX.Transform.Transformers | ||
{ | ||
#if !XAMLX_INTERNAL | ||
public | ||
#endif | ||
class ArrayElementTransformer : IXamlAstTransformer | ||
{ | ||
public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node) | ||
{ | ||
if (node is XamlArrayExtensionNode array) | ||
{ | ||
var elementType = array.Type.GetClrType().ArrayElementType; | ||
|
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for (int i = 0; i < array.Elements.Count; i++) | ||
{ | ||
var element = array.Elements[i]; | ||
|
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if (!XamlTransformHelpers.TryGetCorrectlyTypedValue(context, element, elementType, out var converted)) | ||
{ | ||
throw new XamlLoadException( | ||
$"Unable to convert value {element} to x:Array element type {elementType.GetFqn()}", element); | ||
} | ||
|
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array.Elements[i] = converted; | ||
} | ||
} | ||
|
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return node; | ||
} | ||
} | ||
} |
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We need to trigger an error for unhandled nodes, otherwise they will be silently ignored.