Add readtables; implement quote and keyword through readtables. #17

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opened 2026-03-30 07:15:08 +00:00 by simon · 0 comments

simon commented

2026-03-30 07:15:08 +00:00

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As title.

A read table will be a map whose keys are single character strings (or else I implement character objects and make them character objects) and whose value is a function of two arguments, the character read and an input stream.

The reader will check the current readtable — the value of *readtable* — each time it reads a character, and if there is a binding, will apply the function that is the value of that binding to the character read and the stream, splicing the result returned by the function into its own output. Among other things, this will allow us to implement reading anything that is not a list or an atom in Lisp, making the C reader very simple.

As title. A read table will be a map whose keys are single character strings (or else I implement character objects and make them character objects) and whose value is a function of two arguments, the character read and an input stream. The reader will check the current readtable — the value of `*readtable*` — each time it reads a character, and if there is a binding, will apply the function that is the value of that binding to the character read and the stream, splicing the result returned by the function into its own output. Among other things, this will allow us to implement reading anything that is not a list or an atom in Lisp, making the C reader very simple.