public Node For()
{
var result = new For()
{
AnchorToken = Expect(TokenCategory.FOR)
};
result.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
Expect(TokenCategory.IN);
result.Add(Expression());
var dostatement = new Do()
{
AnchorToken = Expect(TokenCategory.DO)
};
while (firstOfStatement.Contains(CurrentToken))
{
dostatement.Add(Statement());
}
Expect(TokenCategory.END);
Expect(TokenCategory.SEMICOL);
result.Add(dostatement);
return(result);
}
public Node StmtDoWhile()
{
var statementDo = new Do()
{
AnchorToken = Expect(TokenCategory.DO)
};
Expect(TokenCategory.BRACKETS_OPEN);
statementDo.Add(StmtList());
Expect(TokenCategory.BRACKETS_CLOSE);
var statementWhile = new Do_While()
{
AnchorToken = Expect(TokenCategory.WHILE)
};
statementDo.Add(statementWhile);
Expect(TokenCategory.PARENTHESIS_OPEN);
statementWhile.Add(Expr());
Expect(TokenCategory.PARENTHESIS_CLOSE);
Expect(TokenCategory.SEMICOLON);
return(statementDo);
}