public PlusminusContext plusminus()
{
PlusminusContext _localctx = new PlusminusContext(Context, State);
EnterRule(_localctx, 8, RULE_plusminus);
int _la;
try {
EnterOuterAlt(_localctx, 1);
{
State = 31;
_la = TokenStream.LA(1);
if (!(_la == T__3 || _la == T__4))
{
ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
ErrorHandler.ReportError(this, re);
ErrorHandler.Recover(this, re);
}
finally {
ExitRule();
}
return(_localctx);
}
private ExprContext expr(int _p)
{
ParserRuleContext _parentctx = Context;
int _parentState = State;
ExprContext _localctx = new ExprContext(Context, _parentState);
ExprContext _prevctx = _localctx;
int _startState = 0;
EnterRecursionRule(_localctx, 0, RULE_expr, _p);
int _la;
try {
int _alt;
EnterOuterAlt(_localctx, 1);
{
State = 9;
ErrorHandler.Sync(this);
switch (TokenStream.LA(1))
{
case OP:
{
_localctx = new ParenExpContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 3; Match(OP);
State = 4; expr(0);
State = 5; Match(CP);
}
break;
case VAR:
{
_localctx = new VarContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 7; Match(VAR);
}
break;
case NUM:
{
_localctx = new ConstContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 8; Match(NUM);
}
break;
default:
throw new NoViableAltException(this);
}
Context.Stop = TokenStream.LT(-1);
State = 24;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 3, Context);
while (_alt != 2 && _alt != global::Antlr4.Runtime.Atn.ATN.INVALID_ALT_NUMBER)
{
if (_alt == 1)
{
if (ParseListeners != null)
{
TriggerExitRuleEvent();
}
_prevctx = _localctx;
{
State = 22;
ErrorHandler.Sync(this);
switch (Interpreter.AdaptivePredict(TokenStream, 2, Context))
{
case 1:
{
_localctx = new PowerContext(new ExprContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expr);
State = 11;
if (!(Precpred(Context, 5)))
{
throw new FailedPredicateException(this, "Precpred(Context, 5)");
}
State = 12; Match(POWER);
State = 13; expr(5);
}
break;
case 2:
{
_localctx = new ProdContext(new ExprContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expr);
State = 14;
if (!(Precpred(Context, 4)))
{
throw new FailedPredicateException(this, "Precpred(Context, 4)");
}
State = 16;
ErrorHandler.Sync(this);
_la = TokenStream.LA(1);
if (_la == PROD)
{
{
State = 15; Match(PROD);
}
}
State = 18; expr(5);
}
break;
case 3:
{
_localctx = new PlusminusContext(new ExprContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expr);
State = 19;
if (!(Precpred(Context, 3)))
{
throw new FailedPredicateException(this, "Precpred(Context, 3)");
}
State = 20;
_la = TokenStream.LA(1);
if (!(_la == PLUS || _la == MINUS))
{
ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
State = 21; expr(4);
}
break;
}
}
}
State = 26;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 3, Context);
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
ErrorHandler.ReportError(this, re);
ErrorHandler.Recover(this, re);
}
finally {
UnrollRecursionContexts(_parentctx);
}
return(_localctx);
}
