public static void IsFalseTest(string value, bool expectedResult)
{
var result = StringValidator.IsFalse(value);
Assert.AreEqual(expectedResult, result);
}
public Token NextToken()
{
var stream = this.Stream;
var peek = stream.Peek();
switch (peek.Value)
{
case '$':
return(Lexer.ReadAliasIdentifierToken(stream));
case ']':
return(Lexer.ReadAttributeCloseToken(stream));
case '[':
return(Lexer.ReadAttributeOpenToken(stream));
case '}':
return(Lexer.ReadBlockCloseToken(stream));
case '{':
return(Lexer.ReadBlockOpenToken(stream));
case ':':
return(Lexer.ReadColonToken(stream));
case ',':
return(Lexer.ReadCommaToken(stream));
case '/':
return(Lexer.ReadCommentToken(stream));
case '=':
return(Lexer.ReadEqualsOperatorToken(stream));
case ')':
return(Lexer.ReadParenthesesCloseToken(stream));
case '(':
return(Lexer.ReadParenthesesOpenToken(stream));
case '#':
return(Lexer.ReadPragmaToken(stream));
case ';':
return(Lexer.ReadStatementEndToken(stream));
case '"':
return(Lexer.ReadStringLiteralToken(stream));
default:
if (StringValidator.IsWhitespace(peek.Value))
{
return(Lexer.ReadWhitespaceToken(stream));
}
else if (StringValidator.IsFirstIdentifierChar(peek.Value))
{
var identifier = Lexer.ReadIdentifierToken(stream);
if (StringValidator.IsFalse(identifier.Name))
{
/// A.17.6 Boolean value
///
/// booleanValue = TRUE / FALSE
///
/// FALSE = "false" ; keyword: case insensitive
/// TRUE = "true" ; keyword: case insensitive
return(new BooleanLiteralToken(identifier.Extent, false));
}
else if (StringValidator.IsTrue(identifier.Name))
{
/// A.17.6 Boolean value
///
/// booleanValue = TRUE / FALSE
///
/// FALSE = "false" ; keyword: case insensitive
/// TRUE = "true" ; keyword: case insensitive
return(new BooleanLiteralToken(identifier.Extent, true));
}
else if (StringValidator.IsNull(identifier.Name))
{
/// A.17.7 Null value
///
/// nullValue = NULL
///
/// NULL = "null" ; keyword: case insensitive
/// ; second
return(new NullLiteralToken(identifier.Extent));
}
else
{
return(identifier);
}
}
else if ((peek.Value == '+') || (peek.Value == '-') ||
(StringValidator.IsDecimalDigit(peek.Value)))
{
return(Lexer.ReadNumericLiteralToken(stream));
}
else
{
throw new UnexpectedCharacterException(peek);
}
}
}