SQLFormulaScanner

SQLFormulaScanner

Superclass
Scanner

Subclasses
none

Referenced By
SQLFormulaWrapper

This is a subclass of the Smalltalk Scanner.  It overrides several methods to work for SQL
stuff.

Changes To Scanner class:
The digit is taken as a symbol of a string. The string is taken as a symbol. Precedence is
built in now, the key operators can be specified according to the precedence in the class
method called initialize.  Also a key can be mapped to another key, so that one key can be
translated to another key.  This functionality is useful for making the formula more
readable.  For example, #and can be mapped to #&.

Class Variables:
PrecedenceList <List of Dictionary> List of precedences. Developed By: Jee Ku (jku@cat.ncsa.uiuc.edu)