/
MethodReferenceExtensions.cs
83 lines (65 loc) · 2.59 KB
/
MethodReferenceExtensions.cs
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using System;
using Mono.Cecil;
namespace Xamarin.Forms.Build.Tasks
{
static class MethodReferenceExtensions
{
public static MethodReference ResolveGenericParameters(this MethodReference self, TypeReference declaringTypeRef,
ModuleDefinition module)
{
if (self == null)
throw new ArgumentNullException(nameof(self));
if (declaringTypeRef == null)
throw new ArgumentNullException(nameof(declaringTypeRef));
var reference = new MethodReference(self.Name, ImportUnresolvedType(self.ReturnType, module))
{
DeclaringType = declaringTypeRef,
HasThis = self.HasThis,
ExplicitThis = self.ExplicitThis,
CallingConvention = self.CallingConvention
};
foreach (var parameter in self.Parameters) {
var definition = new ParameterDefinition(ImportUnresolvedType(parameter.ParameterType, module));
foreach (var attribute in parameter.CustomAttributes)
definition.CustomAttributes.Add(attribute);
reference.Parameters.Add(definition);
}
foreach (var generic_parameter in self.GenericParameters)
reference.GenericParameters.Add(new GenericParameter(generic_parameter.Name, reference));
return reference;
}
static TypeReference ImportUnresolvedType(TypeReference type, ModuleDefinition module)
{
if (type.IsGenericParameter)
return type;
var generictype = type as GenericInstanceType;
if (generictype == null)
return module.ImportReference(type);
var imported = new GenericInstanceType(module.ImportReference(generictype.ElementType));
foreach (var argument in generictype.GenericArguments)
imported.GenericArguments.Add(ImportUnresolvedType(argument, module));
return imported;
}
public static void ImportTypes(this MethodReference self, ModuleDefinition module)
{
if (!self.HasParameters)
return;
for (var i = 0; i < self.Parameters.Count; i++)
self.Parameters[i].ParameterType = module.ImportReference(self.Parameters[i].ParameterType);
}
public static MethodReference MakeGeneric(this MethodReference self, TypeReference declaringType, params TypeReference [] arguments)
{
var reference = new MethodReference(self.Name, self.ReturnType) {
DeclaringType = declaringType,
HasThis = self.HasThis,
ExplicitThis = self.ExplicitThis,
CallingConvention = self.CallingConvention,
};
foreach (var parameter in self.Parameters)
reference.Parameters.Add(new ParameterDefinition(parameter.ParameterType));
foreach (var generic_parameter in self.GenericParameters)
reference.GenericParameters.Add(new GenericParameter(generic_parameter.Name, reference));
return reference;
}
}
}