public void IL_LazyLoad()
{
var peStream = new MemoryStream(TestResources.Misc.Members);
using (var reader = new PEReader(peStream, PEStreamOptions.LeaveOpen))
{
var md = reader.GetMetadataReader();
var il = reader.GetMethodBody(md.GetMethodDefinition(MetadataTokens.MethodDefinitionHandle(1)).RelativeVirtualAddress);
Assert.Equal(new byte[] { 0, 42 }, il.GetILBytes());
Assert.Equal(8, il.MaxStack);
}
}
/// <remarks>
/// Based on https://gist.github.com/nguerrera/72444715c7ea0b40addb
/// </remarks>
public static byte[] GetILBytes(this MethodInfo methodInfo)
{
#if NET45
return methodInfo.GetMethodBody().GetILAsByteArray();
#else
var metadataToken = methodInfo.GetMetadataToken();
using (var stream = File.OpenRead(methodInfo.DeclaringType.GetTypeInfo().Assembly.Location))
using (var peReader = new PEReader(stream))
{
var metadataReader = peReader.GetMetadataReader();
var methodHandle = MetadataTokens.MethodDefinitionHandle(metadataToken);
var methodDefinition = metadataReader.GetMethodDefinition(methodHandle);
var methodBody = peReader.GetMethodBody(methodDefinition.RelativeVirtualAddress);
return methodBody.GetILBytes();
}
#endif
}
public void Metadata_EagerLoad()
{
var peStream = new MemoryStream(TestResources.Misc.Members);
using (var reader = new PEReader(peStream, PEStreamOptions.LeaveOpen | PEStreamOptions.PrefetchMetadata))
{
var md = reader.GetMetadataReader();
var method = md.GetMethodDefinition(MetadataTokens.MethodDefinitionHandle(1));
Assert.Equal("MC1", md.GetString(method.Name));
Assert.Throws<InvalidOperationException>(() => reader.GetEntireImage());
Assert.Throws<InvalidOperationException>(() => reader.GetMethodBody(method.RelativeVirtualAddress));
}
}