ll

Difference between an LL and Recursive Descent parser?

I've recently being trying to teach myself how parsers (for languages/context-free grammars) work, and most of it seems to be making sense, except for one thing. I'm focusing my attention in particular on LL(k) grammars, for which the two main algorithms seem to be the LL parser (using stack/parse table) and the Recursive Descent parser ...

Where is boost::lambda::ll?

Hi all, I can't seem to find boost::lambda::ll for a nested ll::for_each() invocations in any header file in the boost_1_39_0 distribution. Could someone point me to the right direction? Thanks. ...

Markdown blockquote parsing with ANTLR

This has been something that's been bothering me for a while. How does one go about parsing the following text into the HTML below using ANTLR? I can't seem to wrap my head around this at all. Any Ideas? Markdown: > first line > second line > blockquote> <p>first line second line</p> <blockquote> <p>nested quote</p> </b...

Antlr left recursive problem

I have a left recursive issue in my Antlr grammar. While I think I understand why there is a problem I am unable to think of a solution. The issue is with the last line for my datatype rule. I have included the entire grammar for you to see: grammar Test; options {output=AST;ASTLabelType=CommonTree;} tokens {FUNCTION; ATTRIBUTES; C...

How does an LL parser evaluate this expression?

Considering this expression: 3 + 2 + 2 * 2 = ? Would it be 14? ...

Top-Down Parser want to have decent case example left-recursion in a 'Code'

Hello fellow stack over flow members. I'm studying for compiler class. I did understand Top-Down Parser should avoid left-recursion, and transform into right-recursion way. Questions are, a) am I understanding right Top-Down Parser is equal to LL and Bottom-Up Parser is equal to LR ? b) I've found out left-recursion is Rule that cal...