public void testVisitPowerExp()
{
setup("4^3^2");
PowerExpContext context = parser.expression() as PowerExpContext;
DoubleSpreadsheetVisitor visitor = new DoubleSpreadsheetVisitor();
double result = visitor.VisitPowerExp(context);
Assert.Equal(double.Parse("262144"), result);
}
public void testExpressionPow()
{
setup("5^3^2");
PowerExpContext context = parser.expression() as PowerExpContext;
CommonTokenStream ts = (CommonTokenStream)parser.InputStream;
Assert.Equal(SpreadsheetLexer.NUMBER, ts.Get(0).Type);
Assert.Equal(SpreadsheetLexer.T__2, ts.Get(1).Type);
Assert.Equal(SpreadsheetLexer.NUMBER, ts.Get(2).Type);
Assert.Equal(SpreadsheetLexer.T__2, ts.Get(3).Type);
Assert.Equal(SpreadsheetLexer.NUMBER, ts.Get(4).Type);
}
private ExpressionContext expression(int _p)
{
ParserRuleContext _parentctx = Context;
int _parentState = State;
ExpressionContext _localctx = new ExpressionContext(Context, _parentState);
ExpressionContext _prevctx = _localctx;
int _startState = 0;
EnterRecursionRule(_localctx, 0, RULE_expression, _p);
int _la;
try {
int _alt;
EnterOuterAlt(_localctx, 1);
{
State = 14;
ErrorHandler.Sync(this);
switch (TokenStream.LA(1))
{
case T__0:
{
_localctx = new ParenthesisExpContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 3; Match(T__0);
State = 4; expression(0);
State = 5; Match(T__1);
}
break;
case NAME:
{
_localctx = new FunctionExpContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 7; Match(NAME);
State = 8; Match(T__0);
State = 9; expression(0);
State = 10; Match(T__1);
}
break;
case NUMBER:
{
_localctx = new NumericAtomExpContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 12; Match(NUMBER);
}
break;
case ID:
{
_localctx = new IdAtomExpContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 13; Match(ID);
}
break;
default:
throw new NoViableAltException(this);
}
Context.Stop = TokenStream.LT(-1);
State = 27;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 2, Context);
while (_alt != 2 && _alt != global::Antlr4.Runtime.Atn.ATN.INVALID_ALT_NUMBER)
{
if (_alt == 1)
{
if (ParseListeners != null)
{
TriggerExitRuleEvent();
}
_prevctx = _localctx;
{
State = 25;
ErrorHandler.Sync(this);
switch (Interpreter.AdaptivePredict(TokenStream, 1, Context))
{
case 1:
{
_localctx = new MulDivExpContext(new ExpressionContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 16;
if (!(Precpred(Context, 6)))
{
throw new FailedPredicateException(this, "Precpred(Context, 6)");
}
State = 17;
_la = TokenStream.LA(1);
if (!(_la == ASTERISK || _la == SLASH))
{
ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
State = 18; expression(7);
}
break;
case 2:
{
_localctx = new AddSubExpContext(new ExpressionContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 19;
if (!(Precpred(Context, 5)))
{
throw new FailedPredicateException(this, "Precpred(Context, 5)");
}
State = 20;
_la = TokenStream.LA(1);
if (!(_la == PLUS || _la == MINUS))
{
ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
State = 21; expression(6);
}
break;
case 3:
{
_localctx = new PowerExpContext(new ExpressionContext(_parentctx, _parentState));
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 22;
if (!(Precpred(Context, 4)))
{
throw new FailedPredicateException(this, "Precpred(Context, 4)");
}
State = 23; Match(T__2);
State = 24; expression(4);
}
break;
}
}
}
State = 29;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 2, Context);
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
ErrorHandler.ReportError(this, re);
ErrorHandler.Recover(this, re);
}
finally {
UnrollRecursionContexts(_parentctx);
}
return(_localctx);
}
