86 lines
2.4 KiB
Plaintext
86 lines
2.4 KiB
Plaintext
(import spork/json :as j)
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(try (os/cd "janet") ([_] nil))
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(import /base :as b)
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(defn- get-line [source line]
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((string/split "\n" source) (dec line)))
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(defn scan-error [e] (pp e) e)
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(defn parse-error [e]
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(def msg (e :msg))
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(def {:line line-num :input input :soure source} (e :token))
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(def source-line (get-line source line-num))
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(print "Parsing error: " msg)
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(print "On line " line-num " in " input)
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(print source-line)
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e)
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(defn validation-error [e]
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(def msg (e :msg))
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(def {:line line-num :input input :source source} (get-in e [:node :token]))
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(def source-line (get-line source line-num))
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(case msg
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"unbound name"
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(do
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(print "Validation error: " msg " " (get-in e [:node :data]))
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(print "on line " line-num " in " input)
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(print source-line))
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(do
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(print "Validation error: " msg)
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(print "on line " line-num)
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(print source-line)))
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e)
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(defn- fn-no-match [e]
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(print "Ludus panicked! no match")
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(def {:line line-num :source source :input input} (get-in e [:node :token]))
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(def source-line (get-line source line-num))
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(print "on line " line-num " in " input)
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(def called (e :called))
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(print "calling " (b/show called))
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(def value (e :value))
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(print "with " (b/show value))
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(print "expecting to match one of")
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(print (b/pretty-patterns called))
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(print source-line)
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)
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(defn- let-no-match [e]
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(print "Ludus panicked! no match")
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(def {:line line-num :source source :input input} (get-in e [:node :token]))
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(def source-line (get-line source line-num))
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(print "on line " line-num " in " input)
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(print "binding " (b/show (e :value)))
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(def pattern (get-in e [:node :data 0]))
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(print "to " (b/show-patt pattern))
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(print source-line))
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(defn- generic-panic [e]
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(def msg (e :msg))
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(def {:line line-num :source source :input input} (get-in e [:node :token]))
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(def source-line (get-line source line-num))
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(print "Ludus panicked! " msg)
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(print "on line " line-num " in " input)
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(print source-line)
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)
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(defn- unbound-name [e]
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(def {:line line-num :source source :lexeme name :input input} (get-in e [:node :token]))
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(def source-line (get-line source line-num))
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(print "Ludus panicked! unbound name " name)
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(print "on line " line-num " in " input)
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(print source-line)
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)
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(defn runtime-error [e]
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(when (= :string (type e)) (print e) (break e))
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(def msg (e :msg))
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(case msg
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"no match: function call" (fn-no-match e)
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"no match: let binding" (let-no-match e)
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"unbound name" (unbound-name e)
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(generic-panic e))
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e)
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