public override object VisitStmtOpcode(AsmParser.StmtOpcodeContext context)
{
string opcode = context.opcode.Text.ToUpper();
Argument argument = null;
if (context.argument() != null)
{
ArgumentVisitor argumentVisitor = new ArgumentVisitor(m_equValues, allowDefer: true);
argument = argumentVisitor.Visit(context.argument());
}
else
{
argument = new ArgumentInherent();
}
switch (opcode)
{
case "ORG":
// TODO
break;
case "END":
Console.WriteLine("END, program start at {0}", argument);
break;
default:
List <Opcode> candidates = Opcode.lookUpOpcode(opcode);
if (candidates.Count == 0)
{
throw new InvalidOperationException("Unsupported opcode '" + opcode + "'");
}
Console.WriteLine("{0} {1}", opcode, argument);
foreach (Opcode candidate in candidates)
{
Console.WriteLine(" {0}", candidate);
}
generateInstruction(candidates, argument);
break;
}
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="AsmParser.StmtOpcode"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitStmtOpcode([NotNull] AsmParser.StmtOpcodeContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="AsmParser.StmtOpcode"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitStmtOpcode([NotNull] AsmParser.StmtOpcodeContext context)
{
}
