public Program Import(TextReader input, ImportErrorList errors)
{
try
{
// Do main import
ProgramBuilder builder = ImportBuilder(input, errors);
// Exit if there were errors
if (errors.ErrorCount > 0)
return null;
else if (builder == null)
throw new ImportException("Unknown import error");
// Create program
Program program = builder.CreateProgram(Processor, KeepDebugInfo);
// Validate program
ProgramValidator.Validate(program, errors);
return (errors.ErrorCount == 0) ? program : null;
}
catch (ImportException e)
{
// Add to error list
errors.AddError(e.Message);
return null;
}
}
protected override ProgramBuilder ImportBuilder(TextReader input, ImportErrorList errors)
{
// Create disassembler and builder
InstructionDisassembler disasm = InstructionDisassembler.Create(Processor);
ProgramBuilder builder = new ProgramBuilder();
// Disassemble each instruction and add to the builder
for (int lineNumber = 1; ; lineNumber++)
{
string line = input.ReadLine();
// Eof?
if (line == null)
break;
// Parse as hex
int instructionInt;
if (!int.TryParse(line, NumberStyles.HexNumber, null, out instructionInt))
{
// Fail fast here
errors.AddError("Line is not a valid hex string", lineNumber);
return null;
}
// Try to disassemble and add instruction
try
{
builder.Add(disasm.Disassemble(instructionInt));
}
catch (ImportException e)
{
// Report error
errors.AddError(e.Message, lineNumber);
}
}
return builder;
}
