public void Parse(string file_path)
{
Source source = new Source(file_path);
var scanner = new PascalScanner(source);
var parser = new PascalParser(scanner);
parser.Parse();
}
public void NextChar_ShouldReturnNextChar()
{
const char expectedNextChar = 'a';
var scanner = new PascalScanner(Mock.Of <ISource>(source => source.NextChar() == expectedNextChar));
scanner.NextChar().Should().Be(expectedNextChar);
}
public static Parser createParser(string language, string type, Source source)
{
if (StringComparer.CurrentCultureIgnoreCase.Equals(language, "Pascal") && StringComparer.CurrentCultureIgnoreCase.Equals(type, "top-down"))
{
Scanner scanner = new PascalScanner(source);
return(new PascalParserTD(scanner));
}
else if (!StringComparer.CurrentCultureIgnoreCase.Equals(language, "Pascal"))
{
throw new Exception("Parser factory: Invalid language '" + language + "'");
}
else
{
throw new Exception("Parser factory: Invalid type '" + type + "'");
}
}
public static Parser CreateParser(string language, string type, Source source)
{
var lang = language.ToLower();
var t = type.ToLower();
if (lang == "pascal" && t == "top-down")
{
var scanner = new PascalScanner(source);
return(new PascalParserTD(scanner));
}
else if (lang != "pascal")
{
throw new Exception($"Parser factory: invalid language '{language}'");
}
else
{
throw new Exception($"Parser factory: invalid type '{type}'");
}
}
public void NextToken_ShouldReturnCharTokenIfCurrentCharIsNotEndOfFile()
{
var scanner = new PascalScanner(Mock.Of <ISource>(source => source.CurrentChar() == 'a'));
scanner.NextToken().Should().BeOfType(typeof(CharToken));
}
public void NextToken_ShouldReturnEndOfFileTokenIfCurrentCharIsEndOfFile()
{
var scanner = new PascalScanner(Mock.Of <ISource>(source => source.CurrentChar() == Constants.EOF));
scanner.NextToken().Should().BeOfType(typeof(EofToken));
}
