public KeywordParser()
{
Keywords = new HashSet <string>()
{
"PRINT", "LENGTH", "READ", "WRITE", "int", "int[]", "if", "endif", "new", "while", "endwhile"
};
PrintParser = Parse.String("PRINT").Text().Token();
LengthParser = Parse.String("LENGTH").Text().Token();
ReadParser = Parse.String("READ").Text().Token();
WriteParser = Parse.String("WRITE").Text().Token();
IntParser = Parse.String("int").Text().Token();
IntArrayParser = Parse.String("int[]").Text().Token();
NewParser = Parse.String("new").Text().Token();
IfParser = Parse.String("if").Text().Token();
EndIfParser = Parse.String("endif").Text().Token();
WhileParser = Parse.String("while").Text().Token();
EndWhileParser = Parse.String("endwhile").Text().Token();
NotKeywordParser = Parse.Not(
IntParser
.Or(IfParser)
.Or(EndIfParser)
.Or(WhileParser)
.Or(EndWhileParser)
.Or(NewParser)
.Or(PrintParser)
.Or(LengthParser)
.Or(ReadParser)
.Or(WriteParser)
);
}