/// <summary>
/// Load program from ascii, bytecode or protected stream.
/// </summary>
/// <param name="stream">Program stream</param>
/// <param name="rebuildLineNumber">Should rebuild line numbers</param>
public void Load(Stream stream, bool rebuildLineNumber = true)
{
Erase();
var programMode = FindDocumentType(stream);
Bytecode.WriteByte((byte)programMode);
switch (programMode)
{
case ProgramMode.Binary:
stream.CopyTo(Bytecode);
break;
case ProgramMode.Protected:
_protected = AllowProtect;
ProtectedProgramEncoder.Decode(stream).CopyTo(Bytecode);
break;
case ProgramMode.Ascii:
Merge(stream);
break;
}
if (rebuildLineNumber && programMode != ProgramMode.Ascii)
{
RebuildLineNumbers();
}
}
/// <summary>
/// Save the program to stream stream in defined mode.
/// </summary>
/// <param name="stream">Stream to which to save</param>
/// <param name="mode">Mode in which to save program</param>
public void SaveTo(Stream stream, ProgramMode mode)
{
if (mode != ProgramMode.Protected && _protected)
{
throw new ReplRuntimeException(ReplExceptionCode.IllegalFunctionCall);
}
var current = Bytecode.Position;
// skip first \x00 in bytecode
Bytecode.Seek(1, SeekOrigin.Begin);
switch (mode)
{
case ProgramMode.Binary:
Bytecode.CopyTo(stream);
break;
case ProgramMode.Protected:
ProtectedProgramEncoder.Encode(Bytecode).CopyTo(stream);
break;
case ProgramMode.Ascii:
while (true)
{
var output = Tokeniser.DetokeniseLine(Bytecode);
if (output.LineNumber == -1 || output.LineNumber > MaxLineNumber)
{
break;
}
stream.Write(output.Text);
}
break;
}
Bytecode.Seek(current, SeekOrigin.Begin);
}
