public const char InverseOne = (char)255; // -1
public static string KindToString(ExprTokenKind kind)
{
string result;
KindToStringValues.TryGetValue(kind, out result);
return(result ?? String.Empty);
}
public void Expected(ExprTokenKind wanted)
{
Kind = ExprTokenKind.ERROR;
if (wanted == ExprTokenKind.ERROR || wanted == ExprTokenKind.UNKNOWN)
{
throw new ParseError(String.Format(ParseError.ParseError_InvalidToken, this));
}
else
{
throw new ParseError(String.Format(ParseError.ParseError_InvalidTokenWanted, this, wanted));
}
}
public void Unexpected(char wanted)
{
ExprTokenKind prevKind = Kind;
Kind = ExprTokenKind.ERROR;
if (wanted == default(char))
{
switch (prevKind)
{
case ExprTokenKind.TOK_EOF:
throw new ParseError(ParseError.ParseError_UnexpectedEndOfExpression);
case ExprTokenKind.IDENT:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedSymbol, Value));
case ExprTokenKind.VALUE:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedValue, Value));
default:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedExpressionToken, Symbol));
}
}
else
{
switch (prevKind)
{
case ExprTokenKind.TOK_EOF:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedEndOfExpressionWanted, wanted));
case ExprTokenKind.IDENT:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedSymbolWanted, Value, wanted));
case ExprTokenKind.VALUE:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedValueWanted, Value, wanted));
default:
throw new ParseError(String.Format(ParseError.ParseError_UnexpectedExpressionTokenWanted, Symbol, wanted));
}
}
}
public ExprToken(ExprTokenKind kind, Value value)
: this()
{
Kind = kind;
Value = value;
}
private void ReadAndCheckTokenProps(Func <int> act, ref ExprToken token, InputTextStream inStream, int expectedResult, ExprTokenKind expectedKind, int expectedLength, Value expectedValue, string expectedSymbol)
{
inStream.PeekNextNonWS();
token.Clear();
int result = act();
Assert.Equal(expectedResult, result);
Assert.Equal(expectedKind, token.Kind);
Assert.Equal(expectedLength, token.Length);
Assert.True(expectedValue.IsEqualTo(token.Value));
Assert.Equal(expectedSymbol, token.Symbol);
}