public static bool CanPrintAsNumber(UString textValue, Symbol typeMarker)
{
int la0;
// Check if the typeMarker is potentially acceptable for printing as a number
// line 26
if (typeMarker.Name.TryGet(0, '\0') != '_' || !IsNormalIdentifier(typeMarker.Name))
{
return(false);
}
// line 28
char firstTMChar = typeMarker.Name.TryGet(1, '\0');
// line 29
if (firstTMChar == 'e' || firstTMChar == 'E' || firstTMChar == 'p' || firstTMChar == 'P')
{
return(false);
}
// Prepare LexerSource needed by LLLPG, and our error counter
// line 33
if (src == null)
{
src = new LexerSource <UString>(textValue, "", 0, false);
src.ErrorSink = msgCounter = new NullMessageSink();
}
else
{
src.Reset(textValue, "", 0, false); // re-use old object
msgCounter.ResetCountersToZero();
}
// Find out whether textValue is in numeric format
// line 42
bool isHex = false;
// Line 44: ([−])?
do
{
la0 = src.LA0;
if (la0 == '−')
{
src.Skip();
}
else if (la0 == -1 || la0 == '.' || la0 >= '0' && la0 <= '9')
{
;
}
else
{
src.Error(0, "In rule 'CanPrintAsNumber', expected one of: [\\$.0-9−]");
}
} while (false);
// Line 45: ( BinNumber / HexNumber / DecNumber )
la0 = src.LA0;
if (la0 == '0')
{
switch (src.LA(1))
{
case 'B':
case 'b':
BinNumber();
break;
case 'X':
case 'x':
{
HexNumber();
// line 46
isHex = true;
}
break;
case -1:
case '\'':
case '.':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'E':
case '_':
case 'e':
DecNumber();
break;
default:
src.Error(1, "In rule 'CanPrintAsNumber', expected one of: [\\$'.0-9BEX_bex]");
break;
}
}
else if (la0 == '.' || la0 >= '1' && la0 <= '9')
{
DecNumber();
}
else
{
src.Error(0, "In rule 'CanPrintAsNumber', expected one of: [.0-9]");
}
src.Match(-1);
// line 50
return(msgCounter.ErrorCount == 0 &&
!(isHex && (firstTMChar >= 'a' && firstTMChar <= 'f' || firstTMChar >= 'A' && firstTMChar <= 'F')));
}
void Num()
{
int la0, la1;
#line 97 "Grammars.ecs"
bool dot = false;
#line default
// Line 98: ([.])?
la0 = _src.LA0;
if (la0 == '.')
{
_src.Skip();
#line 98 "Grammars.ecs"
dot = true;
#line default
}
_src.MatchRange('0', '9');
// Line 99: ([0-9])*
for (;;)
{
la0 = _src.LA0;
if (la0 >= '0' && la0 <= '9')
{
_src.Skip();
}
else
{
break;
}
}
// Line 100: (&!{dot} [.] [0-9] ([0-9])*)?
la0 = _src.LA0;
if (la0 == '.')
{
if (!dot)
{
la1 = _src.LA(1);
if (la1 >= '0' && la1 <= '9')
{
_src.Skip();
_src.Skip();
// Line 100: ([0-9])*
for (;;)
{
la0 = _src.LA0;
if (la0 >= '0' && la0 <= '9')
{
_src.Skip();
}
else
{
break;
}
}
}
}
}
#line 101 "Grammars.ecs"
_value = double.Parse(_src.CharSource.Substring(_startIndex, _src.InputPosition - _startIndex));
#line default
}