Talk:Recursive descent parser

This page really needs a discussion of the problem of left-recursive grammar rules. Such rules are extremely common, as for example

EXPR = INT | EXPR + EXPR | EXPR * EXPR;

A recursive descent parser, presented with this grammar, will loop forever on a malformed input.

Dominus 04:44, 28 Aug 2003 (UTC)

The code on the page is wrong. Parse_E will parse the string NOTTRUETRUE which is not part of the language.