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30 lines
707 B
CoffeeScript
30 lines
707 B
CoffeeScript
readline = require "./node_readline.coffee"
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reader = require "./reader.coffee"
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printer = require "./printer.coffee"
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# read
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READ = (str) -> reader.read_str str
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# eval
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EVAL = (ast, env) -> ast
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# print
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PRINT = (exp) -> printer._pr_str exp, true
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# repl
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rep = (str) -> PRINT(EVAL(READ(str), {}))
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# repl loop
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while (line = readline.readline("user> ")) != null
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continue if line == ""
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try
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console.log rep line
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catch exc
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continue if exc instanceof reader.BlankException
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if exc.stack? and exc.stack.length > 2000
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console.log exc.stack.slice(0,1000) + "\n ..." + exc.stack.slice(-1000)
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else if exc.stack? console.log exc.stack
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else console.log exc
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# vim: ts=2:sw=2
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