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Line Handler

Below the level of the lexical analyzer will be low-level routines that perform input of the source file and get characters from it.

An input line will be treated as an array of characters, with a pointer to the next character (an index in the array).

Interfaces:

The Line Handler will do such things as skipping whitespace (blanks, tabs, newlines), ignoring comments, handling continuation lines, etc. It may return special ``end of statement'' or ``end of file'' pseudo-characters.