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-rw-r--r--Xamarin.Forms.Build.Tasks/CompiledMarkupExtensions/ArrayExtension.cs31
1 files changed, 31 insertions, 0 deletions
diff --git a/Xamarin.Forms.Build.Tasks/CompiledMarkupExtensions/ArrayExtension.cs b/Xamarin.Forms.Build.Tasks/CompiledMarkupExtensions/ArrayExtension.cs
new file mode 100644
index 0000000..0626114
--- /dev/null
+++ b/Xamarin.Forms.Build.Tasks/CompiledMarkupExtensions/ArrayExtension.cs
@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+using Mono.Cecil;
+using Mono.Cecil.Cil;
+using Mono.Cecil.Rocks;
+using Xamarin.Forms.Xaml;
+
+namespace Xamarin.Forms.Build.Tasks
+{
+ class ArrayExtension : ICompiledMarkupExtension
+ {
+ public IEnumerable<Instruction> ProvideValue(IElementNode node, ModuleDefinition module, ILContext context, out TypeReference memberRef)
+ {
+ var typeNode = node.Properties[new XmlName("", "Type")] as IElementNode;
+ var typeTypeRef = context.TypeExtensions[typeNode];
+ var n = node.CollectionItems.Count;
+
+ var instructions = new List<Instruction>();
+ instructions.Add(Instruction.Create(OpCodes.Ldc_I4, n));
+ instructions.Add(Instruction.Create(OpCodes.Newarr, typeTypeRef));
+
+ memberRef = typeTypeRef.MakeArrayType();
+ for (var i = 0; i < n; i++) {
+ instructions.Add(Instruction.Create(OpCodes.Dup));
+ instructions.Add(Instruction.Create(OpCodes.Ldc_I4, i));
+ instructions.Add(Instruction.Create(OpCodes.Ldloc, context.Variables[node.CollectionItems[i] as IElementNode]));
+ instructions.Add(Instruction.Create(OpCodes.Stelem_Ref));
+ }
+ return instructions;
+ }
+ }
+} \ No newline at end of file