public ByteBuffer PatchRawMethodBody(MethodDefinition method, CodeWriter writer, out MethodSymbols symbols)
{
var buffer = new ByteBuffer();
symbols = new MethodSymbols(method.Name);
this.method = method;
reader.context = method;
MoveTo(method.RVA);
var flags = ReadByte();
MetadataToken local_var_token;
switch (flags & 0x3)
{
case 0x2: // tiny
buffer.WriteByte(flags);
local_var_token = MetadataToken.Zero;
symbols.code_size = flags >> 2;
PatchRawCode(buffer, symbols.code_size, writer);
break;
case 0x3: // fat
base.position--;
PatchRawFatMethod(buffer, symbols, writer, out local_var_token);
break;
default:
throw new NotSupportedException();
}
var symbol_reader = reader.module.symbol_reader;
if (symbol_reader != null && writer.metadata.write_symbols)
{
symbols.method_token = GetOriginalToken(writer.metadata, method);
symbols.local_var_token = local_var_token;
symbol_reader.Read(symbols);
}
return buffer;
}
static MetadataToken GetLocalVarToken(ByteBuffer buffer, MethodSymbols symbols)
{
if (symbols.variables.IsNullOrEmpty())
return MetadataToken.Zero;
buffer.position = 8;
return new MetadataToken(buffer.ReadUInt32());
}
void PatchRawFatMethod(ByteBuffer buffer, MethodSymbols symbols, CodeWriter writer, out MetadataToken local_var_token)
{
var flags = ReadUInt16();
buffer.WriteUInt16(flags);
buffer.WriteUInt16(ReadUInt16());
symbols.code_size = ReadInt32();
buffer.WriteInt32(symbols.code_size);
local_var_token = ReadToken();
if (local_var_token.RID > 0)
{
var variables = symbols.variables = ReadVariables(local_var_token);
buffer.WriteUInt32(variables != null
? writer.GetStandAloneSignature(symbols.variables).ToUInt32()
: 0);
}
else
buffer.WriteUInt32(0);
PatchRawCode(buffer, symbols.code_size, writer);
if ((flags & 0x8) != 0)
PatchRawSection(buffer, writer.metadata);
}