private void EmitMethodBody(MethodBuilder methodBuilder, ConstructorBuilder constructorBuilder, Cci.IMethodBody body)
{
byte[] byteCode = body.IL.Copy(0, body.IL.Length);
int[] tokenFixupOffsets = SubstituteTokens(byteCode);
// prepare signature:
var sigHelper = SignatureHelper.GetLocalVarSigHelper(_builder);
int localCount = 0;
foreach (var local in body.LocalVariables)
{
var type = ResolveType(local.Type);
if (local.IsReference)
{
type = type.MakeByRefType();
}
if (local.CustomModifiers.Any())
{
if (local.IsPinned)
{
throw new NotSupportedException("Ref.Emit limitation");
}
Type[] reqMods, optMods;
ResolveCustomModifiers(local.CustomModifiers, out reqMods, out optMods);
sigHelper.AddArgument(type, reqMods, optMods);
}
else
{
sigHelper.AddArgument(type, local.IsPinned);
}
localCount++;
}
byte[] signature = sigHelper.GetSignature();
// prepare exception handlers:
var regions = body.ExceptionRegions;
var handlers = new ExceptionHandler[regions.Length];
int i = 0;
foreach (var info in regions)
{
handlers[i++] = new ExceptionHandler(
tryOffset: (int)info.TryStartOffset,
tryLength: (int)info.TryEndOffset - (int)info.TryStartOffset,
filterOffset: (int)info.FilterDecisionStartOffset,
handlerOffset: (int)info.HandlerStartOffset,
handlerLength: (int)info.HandlerEndOffset - (int)info.HandlerStartOffset,
kind: (ExceptionHandlingClauseOptions)info.HandlerKind,
exceptionTypeToken: (info.HandlerKind == ExceptionRegionKind.Catch) ? GetToken(ResolveType(info.ExceptionType)) : 0);
}
if (methodBuilder != null)
{
methodBuilder.InitLocals = body.LocalsAreZeroed;
methodBuilder.SetMethodBody(byteCode, body.MaxStack, signature, handlers, tokenFixupOffsets);
}
else
{
constructorBuilder.InitLocals = body.LocalsAreZeroed;
constructorBuilder.SetMethodBody(byteCode, body.MaxStack, signature, handlers, tokenFixupOffsets);
}
}