Exam 6: Syntax

A left-recursive rule for an operation causes it to left-associate.

Reserved words,or keywords,are not considered to be a typical token category.

Recursive-descent parsers turn the nonterminals into a group of mutually recursive procedures whose actions are based on the right-hand side of the BNFs.

The use of a single token to direct a parse is called single-symbol ____.

____ are descriptions of patterns of characters.

A context-free grammar has a special nonterminal called the ____ symbol which stands for the entire top-level phrase being defined.

Words or tokens are called terminals,since they cannot be broken down further.

Grammar rules are also called ____.

The principle of ____ takes the longest possible string of nonblank characters into a single token.

The processing of white space is generally handled by a ____.