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mal/pil/step1_read_print.l
Vasilij Schneidermann 1809f9baba Fix error handling
2016-10-22 12:37:24 +02:00

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815 B
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(de load-relative (Path)
(load (pack (car (file)) Path)) )
(load-relative "readline.l")
(load-relative "types.l")
(load-relative "reader.l")
(load-relative "printer.l")
(de READ (String)
(read-str String) )
(de EVAL (Ast)
Ast)
(de PRINT (Ast)
(pr-str Ast T) )
(de rep (String)
(PRINT (EVAL (READ String))) )
(load-history ".mal_history")
(use Eof
(until Eof
(let Input (readline "user> ")
(if (=0 Input)
(setq Eof T)
(let Output (catch 'err (rep Input))
(if (isa '+MALError Output)
(let Message (MAL-value Output)
(unless (= (MAL-value Message) "end of token stream")
(prinl "[error] " (pr-str Message)) ) )
(prinl Output) ) ) ) ) ) )
(prinl)
(bye)