public static GlulxFunction Read(Memory memory, int address, int ramStart)
{
var scanner = memory.CreateScanner(address);
var type = ReadType(scanner);
var bodyBuilder = new AstBodyBuilder();
var addressToLocalMap = ReadLocals(scanner, bodyBuilder);
var binder = new InstructionBinder(bodyBuilder, addressToLocalMap, ramStart);
ReadBody(scanner, binder);
var body = bodyBuilder.ToBody();
return(new GlulxFunction(type, address, body));
}
private static void ReadBody(MemoryScanner scanner, InstructionBinder binder)
{
while (true)
{
// Note: We read instructions until we find an opcode number that we don't know about.
var address = scanner.Address;
var opcodeNumber = ReadOpcodeNumber(scanner);
if (!Opcodes.TryGetOpcode(opcodeNumber, out var opcode))
{
break;
}
var(loadOps, storeOps) = ReadOperands(scanner, opcode);
var length = scanner.Address - address;
binder.BindInstruction(opcode, loadOps, storeOps, address, length);
}
}