private static Query ParseQuery(string input)
{
var tokenizer = new SelectTokenizer();
var tokens = tokenizer.Tokenize(input);
return(Parser.Query.Parse(tokens));
}
public static TokenListParserResult <SelectToken, T> Parse <T>(TokenListParser <SelectToken, T> parser, string input)
{
var tokenizer = new SelectTokenizer();
var tokens = tokenizer.Tokenize(input);
return(parser.AtEnd().TryParse(tokens));
}
private static T Parse <T>(TokenListParser <SelectToken, T> parser, string input)
{
var tokenizer = new SelectTokenizer();
var tokens = tokenizer.Tokenize(input);
return(parser.Parse(tokens));
}
public static void AssertEqual(string expected, Option <OrderClause> actual)
{
var tokenizer = new SelectTokenizer();
var tokens = tokenizer.Tokenize(expected);
var expectedClause = Parser.OrderByClause.Parse(tokens);
AssertEqual(expectedClause, actual);
}
public void TestKeywordsAreParsedCorrectly(string input, SelectToken expected)
{
var tokenizer = new SelectTokenizer();
var output = tokenizer.Tokenize(input).ToList();
var token = Assert.Single(output);
Assert.Equal(expected, token.Kind);
}
public void TestBooleanLiteralsAreParserCorrectly(string input, string expected)
{
var tokenizer = new SelectTokenizer();
var output = tokenizer.Tokenize(input).ToList();
var token = Assert.Single(output);
Assert.Equal(SelectToken.BooleanLiteral, token.Kind);
Assert.Equal(expected, token.ToStringValue());
}
public void TestComplexQueryIsParsedCorrectly()
{
var input = "SELECT * FROM Test WHERE m = 5";
var expected = new[]
{
SelectToken.Select, SelectToken.Star,
SelectToken.From, SelectToken.Identifier,
SelectToken.Where, SelectToken.Identifier, SelectToken.Equal, SelectToken.NumberLiteral
};
var tokenizer = new SelectTokenizer();
var output = tokenizer.Tokenize(input).ToList();
Assert.Equal(expected, output.Select(x => x.Kind));
}
private static Query ParseQuery(string query)
{
var tokens = new SelectTokenizer().Tokenize(query);
return(Parser.Query(tokens).Value);
}
