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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).


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.