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using System.Collections.Generic;
using Mono.Cecil;
using Xamarin.Forms.Xaml;
namespace Xamarin.Forms.Build.Tasks
{
static class MethodDefinitionExtensions
{
public static bool MatchXArguments(this MethodDefinition methodDef, ElementNode enode, TypeReference declaringTypeRef, ModuleDefinition module, ILContext context)
{
if (!enode.Properties.ContainsKey(XmlName.xArguments))
return !methodDef.HasParameters;
var arguments = new List<INode>();
var node = enode.Properties[XmlName.xArguments] as ElementNode;
if (node != null)
arguments.Add(node);
var list = enode.Properties[XmlName.xArguments] as ListNode;
if (list != null)
foreach (var n in list.CollectionItems)
arguments.Add(n);
if (methodDef.Parameters.Count != arguments.Count)
return false;
for (var i = 0; i < methodDef.Parameters.Count; i++)
{
var paramType = methodDef.Parameters[i].ParameterType;
var genParam = paramType as GenericParameter;
if (genParam != null) {
var index = genParam.DeclaringType.GenericParameters.IndexOf(genParam);
paramType = (declaringTypeRef as GenericInstanceType).GenericArguments[index];
}
var argType = context.Variables [arguments [i] as IElementNode].VariableType;
if (!argType.InheritsFromOrImplements(paramType))
return false;
}
return true;
}
}
}
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