public InstructionContext instruction()
{
InstructionContext _localctx = new InstructionContext(Context, State);
EnterRule(_localctx, 14, RULE_instruction);
try {
State = 70;
ErrorHandler.Sync(this);
switch (TokenStream.LA(1))
{
case ID:
_localctx = new ExpressionInstructionContext(_localctx);
EnterOuterAlt(_localctx, 1);
{
State = 60; Match(ID);
State = 61; Match(T__5);
State = 62; expression();
}
break;
case T__6:
_localctx = new ConditionalInstructionContext(_localctx);
EnterOuterAlt(_localctx, 2);
{
State = 63; Match(T__6);
State = 64; ((ConditionalInstructionContext)_localctx).var = Match(ID);
State = 65; Match(T__7);
State = 66; Match(T__8);
State = 67; Match(T__2);
State = 68; ((ConditionalInstructionContext)_localctx).label = Match(ID);
}
break;
case T__2:
case WORD:
_localctx = new MacroInstructionContext(_localctx);
EnterOuterAlt(_localctx, 3);
{
State = 69; macro();
}
break;
default:
throw new NoViableAltException(this);
}
}
catch (RecognitionException re) {
_localctx.exception = re;
ErrorHandler.ReportError(this, re);
ErrorHandler.Recover(this, re);
}
finally {
ExitRule();
}
return(_localctx);
}
public override void ExitConditionalInstruction([NotNull] ConditionalInstructionContext context)
{
base.ExitConditionalInstruction(context);
var ids = context.ID();
CheckValidVar(ids[0].Symbol);
var targetLabel = ids[1].Symbol;
CheckValidLabel(targetLabel);
if (context.Parent is LabeledLineContext labeledLine)
{
CheckInfiniteLoop(labeledLine.label, targetLabel);
}
}
