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')));
}
public Token NextToken()
{
int la0, la1;
_startIndex = _src.InputPosition;
_value = null;
// Line 108: ( Num | Id | [\^] | [*] | [/] | [+] | [\-] | ([:] [=] | [=]) | [.] [n] [a] [n] | [.] [i] [n] [f] | [(] | [)] | [\t ] )
do
{
la0 = _src.LA0;
switch (la0)
{
case '.':
{
la1 = _src.LA(1);
if (la1 >= '0' && la1 <= '9')
{
goto matchNum;
}
else if (la1 == 'n')
{
#line 116 "Grammars.ecs"
_type = TT.Num;
#line default
_src.Skip();
_src.Skip();
_src.Match('a');
_src.Match('n');
#line 116 "Grammars.ecs"
_value = double.NaN;
#line default
}
else if (la1 == 'i')
{
#line 117 "Grammars.ecs"
_type = TT.Num;
#line default
_src.Skip();
_src.Skip();
_src.Match('n');
_src.Match('f');
#line 117 "Grammars.ecs"
_value = double.PositiveInfinity;
#line default
}
else
{
goto error;
}
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
goto matchNum;
case '^':
{
#line 110 "Grammars.ecs"
_type = TT.Exp;
#line default
_src.Skip();
}
break;
case '*':
{
#line 111 "Grammars.ecs"
_type = TT.Mul;
#line default
_src.Skip();
}
break;
case '/':
{
#line 112 "Grammars.ecs"
_type = TT.Div;
#line default
_src.Skip();
}
break;
case '+':
{
#line 113 "Grammars.ecs"
_type = TT.Add;
#line default
_src.Skip();
}
break;
case '-':
{
#line 114 "Grammars.ecs"
_type = TT.Sub;
#line default
_src.Skip();
}
break;
case ':':
case '=':
{
#line 115 "Grammars.ecs"
_type = TT.Set;
#line default
// Line 115: ([:] [=] | [=])
la0 = _src.LA0;
if (la0 == ':')
{
_src.Skip();
_src.Match('=');
}
else
{
_src.Match('=');
}
}
break;
case '(':
{
#line 118 "Grammars.ecs"
_type = TT.LParen;
#line default
_src.Skip();
}
break;
case ')':
{
#line 119 "Grammars.ecs"
_type = TT.RParen;
#line default
_src.Skip();
}
break;
case '\t':
case ' ':
{
#line 120 "Grammars.ecs"
_type = TT.Space;
#line default
_src.Skip();
}
break;
default:
if (la0 >= 'A' && la0 <= 'Z' || la0 == '_' || la0 >= 'a' && la0 <= 'z')
{
#line 109 "Grammars.ecs"
_type = TT.Id;
#line default
Id();
}
else
{
goto error;
}
break;
}
break;
matchNum:
{
#line 108 "Grammars.ecs"
_type = TT.Num;
#line default
Num();
}
break;
error:
{
#line 122 "Grammars.ecs"
_type = TT.EOF;
#line default
// Line 123: ([^\$])?
la0 = _src.LA0;
if (la0 != -1)
{
#line 123 "Grammars.ecs"
_type = TT.Unknown;
#line 123 "Grammars.ecs"
_src.Error(0, "Unexpected character");
#line default
_src.Skip();
}
}
} while (false);
#line 125 "Grammars.ecs"
return(new Token {
Type = _type, Value = _value, StartIndex = _startIndex
});
#line default
}